AGMA 910-C90

, AGMA 9 lo-C90 (Revision of AGMA 114.02)

G

June 1990

Y.== s = -= w 3 ---

Reproduced By GLOBAL ENGINEERINGDOCUMENTS With The Permission Of AGMA Under Royalty Agreement

AMERICAN GEAR MANUFACTURERS ASSOCIATION i

.-

(‘.

Formats for Fine-Pitch Gear Specification Data

AGMA INFORMATION SHEET (This Information Sheet is NOT an AGMA Standard)

Formats for Fine-Pitch Gear Specification Data [Tables or other self-supporting sections may be quoted or extracted in their entirety. Credit line should read: Extracted from AGMA 910-C90, Formats for Fine-Pitch Gear Specification Data, with the permission of the publisher, the American Gear Manufacturers Association, 1500 King Street, Suite 201, Alexandria, Virginia 22314.1 AGMA Information Sheets are subject to constant improvement, revision or withdrawal as dictated by experience. Any person who refers to AGMA Technical Publications should be sure that the publication is the latest available from the Association on the subject matter.

ABSTRACT Formats for Fine-Pitch Gear Specification Data consists of a series of printed forms for gear drawings that contain the appropriate data to be tabulated by the gear designer for the gear manufacturer. Also included are a series of definitions of the various tabulated items. For an appendix, there are blank, pre-printed forms that can easily be copied for the user’s drawings.

Copyright 0, 1990

American Gear Manufacturers Association 1500 King Street, Suite 201 Alexandria, Virginia 22314

June, 1990

ISBN: 1-55589-571-g

AGMA

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9 lo-c90

Formats for Fine-Pitch Gear Specification Data

FOREWORD [The foreword, footnotes, and appendices, if any, are provided for informational purposes only, and should not be construed as a part of American Gear Manufacturers Association 9 lo-C90, Formats for Fine-Pitch

Gear Specification

Data.]

Gathering of data for this Information Sheet, including questionnaires and surveys, was begun in the spring of 1953. The committee recognized at that time the need for standardized fine-pitch gear drawing format data. Individual sections on spur, helical, straight bevel, spiral and Zero1 bevel gears; worm and wormgears; face gears and pinions; and spur and helical racks were first prepared by the Task Committee on Drawing Formats. Each section was carefully reviewed by the Fine-Pitch Gearing Committee. Certain sections were reworked to bring them in line with the work being done by the Aerospace Gearing Committee in the field of angular accuracy specification, The formats for spur and helical gears were published as Appendix C of AGMA Standard 207.04 in June, 1956. The formats for worm and wormgears were published as Appendix B of AGMA Standard 374.03 in July, 1956. The early development work, continued review and revision, and field testing has resulted in this Information Sheet which the committee feels is based on sound gear engineering and one which can be easily understood by both the shopman and inspector. The first complete draft of this Information Sheet was prepared in September, 1957. It was approved by the AGMA membership in February, 1961. Printing of the Information Sheet was held up in order to make it conform to AGMA 390.03, AGMA Gear Handbook, Volume 1, Gear Classification, Materials and Measuring

AGMA 1972.

Methods for Unassembled Gears.

114.02 was a revision of 114.01 which was approved by the AGMA

membership in July,

AGMA 910-C90 is a revision of AGMA 114.02 which updates the style and formats for spur gears, helical gears, bevel gears, wormgearing, face gears and racks. It was approved by the members of the Fine-Pitch Gearing Committee on February 27, 1990. It was recommended by the Technical Devision Execitive Committee for publication and approved by the members on June 10, 1990.

AGMA

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910-c90

Formats for Fine-Pitch Gear Specification Data

PERSONNEL

of the AGMA

Committee

for Fine Pitch Gearing

Chairman: D. E. Bailey (Rochester Gear, Inc.)

ACTIVE

MEMBERS

P. M. Dean, Jr. (Honorary Member) F. R. Estabrook, Jr. (Consultant) I. Laskin (Consultant) D. McCarroll (Gleason) J. R. Mihelick (Reliance Electric Company) R. Mills (Eastman Kodak) D. H. Senkfor (Precision Gear) L. J. Smith (Invincible Gear) R. E. Smith (Consultant) G. E. Thomas (Bison Gear)

ASSOCIATE

MEMBERS

C. R. Firestone (Reliance Electric) D. R. Gimpert (Koepfer America) T. J. Krenzer (Gleason) G. E. Olson (Cleveland Gear) J. M. Olchawa (Litton) G. R. Schwartz (Power-Tech) E. E. Shipley (Mechanical Technology) J. L. Smallwood (Smallwood & Son Machine Co.) D. A. Sylvester (Power-Tech) T. Urabe (Tsubakimoto Chain) G. L. Vesey (ITW/Spiroid)

AGMA

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Formats for Fine-Pitch Gear Specification Data

Table of Contents Title Section

Page

1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. Definitions of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3. Application

.................................................................. 6

4. Gear Specification Formats for Spur and Helical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5. Gear Specification Formats for Bevel Gear Data . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6. Gear Specification Formats for Wormgearing Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7. Gear Specification Formats for Face Gear Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8. Gear Specification Formats for Rack Data . . .. . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . 16 Appendix Gear Specification Formats for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , 19

AGMA

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Formats for Fine-Pitch Gear Specification Data

(this page has been left blank)

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Formats for Fine-Pitch Gear Specification Data

uc. Chordal addendum is the height from the top of the tooth to the chord subtending the circular thickness arc. This dimension is required when making chordal tooth thickness measurements of the gears.

1. Scope

Chordal

The formats supplied are intended as guides in the preparation of fine-pitch (20 diametral pitch or finer) gear drawings. They show the proper data to be placed on drawings of gears which are to be used for general purpose light loads or control gear applications. In each case the data shown indicates the minimum or basic number of items that should be specified for each type of gearing.

Chordal Thickness, tc. Chordal Thickness is the length of the chord subtending a circular thickness arc. It is generally difficult to make chordal tooth measurements on gears of diametral pitches finer than 48 or worms finer than 0.065 circular pitch. Other means of specifying gear tooth thickness may be required for very fine diametral pitch gears.

2. Definitions of Terms

Composite

Action

Test (Double

Flank).

The

composite action test is a method of inspection in which the work gear is rolled in tight double flank contact with a master or a specified gear, in order to determine composite variations. The composite action test must be made on a variable center distance composite action test device.

a. Addendum is the height by which a tooth projects beyond (outside for external, or inside for internal) the standard pitch circle or pitch line; also the radial distance between the pitch circle and the addendum circle. Addendum,

Addendum is a reference dimension shown on drawings as an engineering convenience.

Composite Tolerance, Tooth-to-Tooth (Double Flank), The permissible amount of VqT-

In a bevel gear, addendum is the height by which a tooth projects beyond the pitch cone and is measured at the outer end of the teeth.

tooth-to-tooth

composite variation.

Composite Tolerance, Total (Double Flank), Vcqp The permissible amount of total composite

In wormgearing, addendum is the radial distance between the standard pitch cylinder and the outside circle of the worm and wormgear. Its actual value is dependent on the specification of outside diameter of the worm. In the case of throated wormgears the addendum is the radial distance from the pitch cylinder to the deepest portion of the throat.

variation. Composite

Variation

(Double

Flank).

Com-

posite variation is the total change in center distance when a gear is inspected by a composite action test. Composite Variation, Tooth-to-Tooth (Double Flank), V . The greatest change in center distance w%ll* e the gear being tested is rotated

Backlash, B. Backlash is the amount by which the width of a tooth space exceeds the thickness of the engaging tooth on the operating pitch circles.

through 360 degree/N during a double flank composite action test. Composite Variation, Total (Double Flank), v . The total change in center distance while the

As actually indicated by measuring devices, backlash may be determined variously in the transverse, normal, or axial planes, and either in the direction of the pitch circles, or on the line of action. Such measurements may be converted to corresponding values on transverse pitch circles for general comparisons.

g% being tested is rotated one complete revolution during a double flank composite action test. Control Gear Part Number. Control gear part number is a reference to the specific gear to be used to control the tooth thickness of the gear under consideration. Since master gears are not commonly available for bevel gears, it is customary to use a control gear, which is obtained

Backlash can also be determined from measurements made on a variable center distance fixture.

AGMA

Addendum,

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Formats for Fine-Pitch Gear Specification Data

by selection, when inspecting subsequent gears of a given gear tooth design.

Helix Angle, $. Helix angle is the angle between any helix and an element of its cylinder. In helical gears and worms, it is at the standard pitch circle unless otherwise specified.

Cutter Number. Cutter number is a specification of the cutter to be used to cut the face gear. The correct generation of a face gear tooth profile is dependent upon the correct selection of the cutter.

Initial Contact Area. Initial contact area is a specification of the amount of the area of contact between master and gear. An initial area of contact of approximately 50 percent is generally considered satisfactory.

Dedendum, b. Dedendum is the depth of a tooth space below the standard (reference) pitch circle or pitch line; also the radial distance between the pitch circle and the root circle.

Inner diameter is the diameter of the cylinder bounding the inner ends of the face gear teeth. This diameter is given a plus tolerance. Inner

Dedendum in bevel gearing is the portion of the tooth extending below the pitch cone and is measured at the outer end of the teeth.

Lead. Lead is the axial advance of a helix for one complete revolution (360 degrees), as in the threads of cylindrical worms, and the teeth of helical gears. It also applies to the teeth of a wormgear.

Face Angle, TO. Face angle, in a bevel or hypoid gear, is the angle between an element of the face cone and its axis. The face cone is customarily defined by the top lands of the teeth. In some designs of bevel gearing the face cone elements do not pass through the apex. Grinding

Wheel or Cutter

Diameter.

Lead Angle, X. Lead angle is the angle between any helix and a plane of rotation. It is the complement of the helix angle and is used for convenience in worms and hobs. It is understood to be at the pitch diameter unless otherwise specified.

Grinding

wheel or cutter diameter is a necessary specification of the size of the cutter required to produce the desired worm thread profile. The thread profile can be shown to vary depending on the diameter of the cutter used to produce the thread.

Lead Tolerance. Lead tolerance is the allowable departure from the theoretical lead. In the case of a single thread worm the lead tolerance is customarily specified over one turn and over three turns of the thread. In the case of multiple thread worms, lead tolerance is specified over 1 axial pitch and over three axial pitches. Note: The term lead tolerance does not apply to helical gears. Tooth Alignment Tolerance is the proper term. See ANWAGMA 2000-A88 for a more complete discussion.

Hand of helix is the direction in which the teeth twist as they recede from an observer looking along the axis. A right hand helix twists clockwise and a left hand helix twists counterclockwise. Hand

of Helix.

A left hand helical rack has teeth which recede when viewed toward the left perpendicularly to the face of the rack; that is, when viewed in a direction parallel to the theoretical axis of the rack. A right hand helical rack has teeth which recede toward the right when viewed perpendicularly to the face of the rack; that is, when viewed in a direction parallel to the theoretical axis of the rack.

Machine Set-up Summary. Machine set-up summary is the information required to make machine settings. While the information for machine settings may be shown on the part drawing, it is customary, and usually preferred, to have a separate data sheet giving this information. When a separate data sheet is used, its summary drawing number should be given on the part drawing.

Hand of Spiral. Hand of spiral is the direction in which the teeth twist from an observer looking along the axis toward the face of the bevel gear. A right hand spiral twists clockwise; left hand, counterclockwise.

AGMA

Diameter.

Master Gear Specification. Master gear specification is a specific reference to the master required to inspect a gear. This may be

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9 lo-c90

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Formats for Fine-Pitch Gear Specification Data

In face gearing, the mounting distance of the face gear is the distance from the axis of the pinion to the surface on the gear that controls its axial position. In wormgearing, the mounting distance is a specification that controls the position of the worm in the throat of the wormgear teeth.

referenced in one of the following manners: number of teeth and basic tooth thickness, tool number, or the code number of the master gear required. Mating Gear Part Number. Mating gear part number may be shown as a convenient reference.

Normal Chordal Addendum, ant. Normal chordal addendum is the chordal addendum in the plane normal to the pitch helix at the center of the tooth. Any convenient measuring diameter may be selected, not necessarily the pitch diameter.

Maximum root Maximum Root Diameter. diameter is specified to assure adequate clearance for the outside diameter of the mating gear. Measurement Over Pins. Measurement over pins is the measurement of the distance over a pin positioned in a tooth space and a reference surface. The reference surface may be the reference axis of the gear, a datum surface or either one or two pins positioned in a tooth space or spaces opposite the first. This measurement is used to determine tooth thickness and is not applicable to face gears, bevel gears, or throated wormgears.

Normal Chordal Thickness, t nc. Normal chordal thickness is the chordal thickness in the plane normal to the pitch helix or the tooth trace at the center of the tooth. Any convenient measuring diameter may be selected, not necessarily the pitch diameter. Number of Teeth, N. The number of teeth in 360 degrees of gear circumference. In case of a sector gear, both the actual number of teeth in the sector and the theoretical number of teeth in 360 degrees should be given.

Worms are usually checked over 3 wires. Balls may be used for larger size internal helical gears.

Number of Threads. The number of threads in a worm is the number of threads contained in the whole circumference of the pitch circle. The term “starts” is sometimes used to differentiate between the number of convolutions along the length of the worm, and individual number of threads.

Minimum Minimum Backlash at Assembly. backlash at assembly is often specified to assist in the assembly operation when adjustable centers are used. Minimum Operating Mounting Distance. Minimum operating mounting distance is often specified to eliminate the necessity of getting prints of the mating gear and assemblies for checking the design specifications, interference, backlash and determination of master gear specification.

Number of Threads or Teeth. Number of threads or teeth in mating part is shown for reference purposes only. Outer Cone Distance, 4. The outer cone distance in bevel gears is the distance from the apex of the pitch cone to the outer ends of the teeth. When not otherwise specified, the short term cone distance is assumed to be outer cone distance. It is customary to give the diametral pitch, tooth thickness, addendum, and dedendum in bevel gears at the outer cone distance and, although not essential, to make the elements of the back cone perpendicular to the elements of the pitch cone.

Mounting Distance. Mounting distance is the distance from the axis of the mating part to the mounting surface of the part under consideration in gearing on perpendicular axes. In bevel gearing, the mounting distance of the gear is the distance from the axis of the pinion to the surface of the gear that controls its axial position. The mounting distance of the pinion is the distance from the axis of the gear to the surface of the pinion that controls its axial position.

AGMA

Outer Diameter. Outer diameter is the diameter of the cylinder bounding the outer ends of the

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Formats for Fine-Pitch Gear Specification Data

gear and its mate should equal the shaft angle of the pair. Although pitch angle cannot be directly measured, it is a convenience when considering the engineering aspect of the gear.

face gear teeth. This diameter is given a minus tolerance. Outside Diameter, D,. Outside diameter is the diameter of the addendum (outside) circle. In a bevel gear it is the diameter of the crown circle. In a throated wormgear it is the maximum diameter of the blank. The term applies to external gears.

Pitch Plane to Reference Surface Dimension. Pitch plane to reference surface dimension of a spur or helical rack is that dimension used to establish location of the pitch plane. The reference surface usually is, but may or may not be, the mounting surface.

Outside diameter is usually shown on the drawing of the gear together with other blank dimensions so that it will not be necessary for machine operators to search gear tooth data for this dimension. Since outside diameter is also used in the manufacture and inspection of the teeth, it may be included in the data block with other tooth specifications if preferred. To enable use of topping hobs for cutting gears on which the tooth thickness has been modified from standard, the outside diameter should be related to the specified equivalent testing radius. See test radius.

Point Width of Grinding Wheel or Cutter. Point width of grinding wheel or cutter is a specification controlling the space width and the whole depth of the thread of the worm. Pressure Angle, +, is in general the angle at a pitch point between the line of pressure which is normal to the tooth surface, and the plane tangent to the pitch surface. The pressure angle gives the direction of the normal to the tooth profile. The pressure angle is equal to the profile angle at the standard pitch circle and can be termed the *‘standard” pressure angle at that point.

Pitch, Axial. Axial pitch is the pitch of a gear parallel to the axis of rotation.

Profile Angle, Normal, $r. The normal profile angle is the angle at a point on the pitch cylinder between the line of action which is normal to the tooth surface and the plane tangent to the pitch cylinder.

Pitch, Circular, p. Circular pitch is the distance along a specified pitch circle or pitch line between corresponding profiles of adjacent teeth. Unless otherwise specified it is given on the standard pitch circle.

Profile Angle, Transverse, $ . The transverse profile angle is the profile angle in a transverse plane.

Pitch, Diametral, pd. Diametral pitch is the ratio of the number of teeth to the pitch diameter in the transverse plane. It is also defined from the pitch of the basic rack.

Quality Number, AGMA, Q. AGMA quality number is specified for convenience when talking or writing about the accuracy of the gear. These classes are defined in ANWAGMA 2000-A88 and AGMA 390.03a.

= NID or pd pd = dp Pitch, Normal Diametral, P&I. The normal diametral pitch is a ratio of the pitch diameter to the number of teeth corrected by the helix angle. In helical gearing, the diametral pitch can be referenced to the normal plane by applying the cosine of the helix angle. = Pd I cos qr = N ID P nd

Root Angle, rR. Root angle, in a bevel or hypoid gear, is the angle between an element of the root cone and its axis. The root cone is customarily defined by the bottom lands of the teeth; however, in some designs of straight bevel gears the bottom lands are not straight line elements, and in other designs the root cone elements do not pass through the pitch cone apex.

cos @

Pitch Angle, P. The pitch angle in bevel gears is the angle between an element of a pitch cone and its axis. In external and internal gears, the pitch angles are respectively less than and greater than 90 degrees. The sum of the pitch angles of the

AGMA

Shaft Angle, C. The shaft angle is the angle between the axes of two non-parallel gear shafts. In a pair of crossed helical gears, the shaft angle lies between the oppositely rotating portions of the

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9 lo-c90

Formats for Fine-Pitch Gear Specification Data

Testing Load is the recommended load between the work and the master gear when performing the rolling test as specified in ANWAGMA 2000-A88. Incorrect testing load will result in incorrect measurement of testing radius.

two shafts. This applies also in the case of wormgearing. In bevel gears, the shaft angle is the sum of the two pitch angles. In hypoid gears, the shaft angle is given when starting a design, and it does not have a fixed relation to the pitch angles and spiral angles.

Testing Load.

Tooth

e. Spiral angle, in a spiral bevel gear, is the angle between the tooth trace and an element of the pitch cone, and corresponds to the helix angle of helical teeth. Unless otherwise specified, the spiral angle is understood to be at the mean cone distance. Spiral

Angle,

D. The standard pitch diameter is the diameter of the standard pitch circle. In spur and helical gears, unless otherwise specified, pitch diameter is related to the number of teeth and the standard transverse pitch. It is obtained as: Standard

D=

Pitch Diameter,

N / Pd

=

Pattern

Displacement.

The

Form. Tooth form defines the pinion or gear tooth profile, and may be specified as standard addendum, long addendum, short addendum, modified involute, or special. In case a modified involute or special tooth form is required, a detailed view should be shown on the drawing. Tooth

Nxph

Tooth form on worms and wormgears is a specification of the profile of the thread or the wormgear tooth. The section in which the tooth form is specified should be noted. The worm thread profile is usually controlled by a specification of the cutter, and the wormgear tooth profile may be controlled by a reference to either the mating worm or preferably to the hob designed to cut the wormgear. Special cases should be controlled by reference to a tooth profile chart.

Surface texture on functional profile surfaces is a measure of the quality of the surface finish of the tooth. It is very difficult to accurately determine the surface roughness of fine For many applications it is pitch gears. considered to be acceptable on gears which meet the maximum tooth-to-tooth composite tolerance specification. Surface Texture.

Test Radius, Rr . The test radius is a number used as an arithmetic convention established to simplify the determination of the proper test distance between a master and a work gear for a composite action test. It is used as a measure of the effective size of a gear. The test radius of the master, plus the test radius of the work gear is the set-up center distance of a composite action test device. Test radius is not the same as the operating pitch radii of the two tightly meshing gears unless both are perfect and to basic or standard tooth thickness.

Tooth Thickness. Tooth thickness is the thickness of a tooth at a specified diameter or tooth height.

Maximum calculated circular thickness on the standard pitch circle is the tooth thickness which will provide the desired minimum backlash when the gear is assembled in mesh with its mate on minimum mounting distance. It is best controlled by testing in tight mesh with a master which integrates all the tolerances in the several teeth in the mesh through the arc of action. It is independent of the effects of runout. Circular thickness is used for calculating purposes and is not directly measured.

Testing dimension of a face gear is the distance from the mounting surface of the face gear to the standard pitch line of a standard master when in intimate contact under recommended load on a variable center distance running gage.

AGMA

Contact

tooth contact pattern of face gears is very sensitive to small changes in mounting distance. In cases where smooth operation is critical, it is desirable not to depart more than +O.OOl inches from the nominal setting. The shape and location of the tooth contact pattern is influenced by cutter size, cutter tilt, and blank proportions.

Maximum calculated normal circular is the circular tooth thickness in the

thickness

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Formats for Fine-Pitch Gear Specification Data

normal plane which satisfies requirements explained in maximum calculated circular thickness on the standard pitch circle.

of addendum and whole depth on a wormgear are customarily controlled by a specification of the cutting tool used to produce the wormgear.

Maximum calculated thread thickness is the thickness of the worm thread on a standard pitch circle. It is the thickness which will provide the desired minimum backlash when the gear is assembled in mesh with the worm on minimum center distance. It is best controlled by means of chordal thickness or over-pins measurements. In wormgearing it is customary to vary the thickness of the worm thread in order to achieve the desired backlash in the mesh. A change in the thickness of the worm thread will not affect the initial contact area between worm and thread to the same degree as a change in the thickness of the wormgear teeth.

In the case of face gearing whole depth is the total depth of a tooth space. It is the distance between the plane defining the roots of the teeth and the plane defining the top lands of the teeth.

Whole Depth, h, . Whole depth is the total depth of a tooth space. It is equal to the addendum plus dedendum; also equal to working depth plus clearance. Whole depth is used as a guide in selecting the proper cutter. Its actual value is dependent on the specification of outside diameter. In the case of bevel gears, whole depth is specified at the large end or heel of the tooth. In the case of wormgearing whole depth is the total radial depth of the tooth or thread space. In the case of the worm its actual value is dependent on the specification of outside diameter and of root diameter, or in some cases by a specification of the point width of the cutter or grinding wheel, and the thread thickness of the worm. The values

AGMA

3. Application In addition to the information shown on the tooth data format, the following items should be shown, usually in the form of notes: (1) Material specification (2) Heat treatment data (3) Surface protective finishes A gear drawing may become a part of a contract between a gear manufacturer and a buyer. Therefore, no detail essential to the manufacturing of the gears should be omitted or left to chance. In fairness to both parties, the drawing should be specific and complete. Before using any one format, be sure to become familiar with all parts of this Information Sheet. 3.1 Significant Digits. In the format sheets, five decimal places are shown for accuracy of calculation. This is not an indication of tolerance. 3.2 Contact Pattern. Gear tooth contact patterns, if required, are to be negotiated between the manufacturer and the buyer.

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Formats for Fine-Pitch Gear Specification Data

4. Gear Specification Formats for Spur and Helical Data

Tooth Form per AGMA 207.06

Part No.

Part Name

SPUR GEAR DATA Basic Specifications xxx

Number of Teeth Diametral Pitch

xxx.xxxxx

Profile Angle

xx.xxxxx”

Tooth Form Circ. Tooth Thickness on Std. Pitch Diameter (Max. Calculated)

.xxxxx

Manufacturing and Inspection xx.xxx

Outside Diameter Outside Diameter Concentricity (Full Indicator Movement)

.xxx

Root Diameter, Maximum

xx.xxx

Pin Diameter

.xxxxx

Pins Measurement Over (Used for inspection if test radius not given) Master Gear Specification

xx.xxxx

Testing Load Total Composite Tolerance

.xxxx

Tooth-to-Tooth

.xxxx

Composite Tolerance

xx.xxxx

Test Radius (Max/Min)

Reference Data xx.xxxxx

Standard Pitch Diameter

.xxxx

Addendum Whole Depth, Minimum

.xxx

AGMA Quality Number

QXX

Mating Gear Drawing Number

AGMA

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Formats for Fine-Pitch Gear Specification Data

I--

I

r

Tooth Form oer AGMA 207.06

I

Part No.

Part Name

INTERNAL, SPUR GEAR DATA Basic Specifications xxx

Number of Teeth Diametral Pitch

xxx.xxxxx

Profile Angle

xx.xxxxx”

Tooth Form .xxxxx

Circ. Tooth Thickness on Std. Pitch Diameter (Max. Calculated)

Manufacturing and Inspection xx.xxx

Inside Diameter

.xxx

Inside Diameter Concentricity (Full Indicator Movement) Root Diameter, Minimum

xx.xxx

Pin Diameter

.xxxxx

Pins Measurement Between for insnection if test radius not given) Master Gear Specification

1

xx.xxxx

Testing Load Total Composite Tolerance

.xxxx

Tooth-to-Tooth

.xxxx

Composite Tolerance

xx.xxxx

Test Radius (Max/Min)

Reference Data

xx.xxxxx

1 Standard Pitch Diameter Addendum Whole Depth, Minimum

QXX

AGMA Quality Number Mating Gear Drawing Number

AGMA

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Formats for Fine-Pitch Gear Specification Data

Tooth Form per AGMA 207.06

Part No.

Part Name

HELICAL

GEAR DATA

Basic Specifications xxx

Number of Teeth Normal Diametral Pitch

xxx.xxxxx

Normal Profile Angle

xx.xxxxx”

Helii Angle, Hand (LH or RH)

xx.xxxxx”

Tooth Form .xxxxx

Normal Circ. Tooth Thickness on Std. Pitch Dia. (Max. Calculated)

Manufacturing and Inspection

I Outside Diameter

I

Outside Diameter Concentricity (Full Indicator Movement)

xx.xxxn .xxxx

Root Diameter, Maximum

xx.xxx

~ Pin Diameter

.xxxxx

Pins ~ Measurement Over (Used for inspection if test radius not given) Master Gear Specification

xx.xxxx

Testing Load Total Composite Tolerance

.xxxx

Tooth-to-Tooth

.xxxx

Comnosite Tolerance

xx.xxxx

Test Radius (Max/Min)

Reference Data Standard Pitch Diameter

I

xx .xxxxx

Transverse Diametral Pitch

xxx.xxxxx

Transverse Profile Angle

xx.xxxxx”

I

.xxxx

Addendum

.xxx

Whole Depth, Minimum Lead

xxx.xxxxx

QXX

AGMA Quality Number Mating Gear Drawing Number

AGMA

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Formats for Fine-Pitch Gear Specification Data

I

I

Tooth Form per AGMA 207.06

Part No.

Part Name

INTERNAL HELICAL

GEAR DATA

Basic Specifications xxx

Number of Teeth Normal Diametral Pitch

xxx.xxxxx

Normal Profile Angle

xx.xxxxx”

Helix Angle, Hand (LH or RH)

xx.xxxxx”

Tooth Form .xxxxx

Normal Circ. Tooth Thickness on Std. Pitch Dia. (Max. Calculated)

Manufacturing and Inspection Inside Diameter

xx.xxxx

Inside Diameter Concentricity (Full Indicator Movement)

.xxxx

Root Diameter, Minimum

xx.xxx

Pin Diameter

.xxxxx

Pins Measurement Between (Used for inspection if test radius not given)

xx.xxxx

Master Gear Specification Testing Load Total Composite Tolerance

.xxxx

Tooth-to-Tooth

.xxxx

Composite Tolerance

xx.xxxx

Test Radius (Max/Min)

Reference Data xx.xxxxx

Standard Pitch Diameter Transverse Diametral Pitch

xxx.xxxxx

Transverse Profile Angle

xx.xxxxx” .xxxx

Addendum

Denth. r Whole~~~

Minimum

I

Lead

.xxx

I

xxx.xxxxx

QXX

AGMA Quality Number Mating Gear Drawing Number

AGMA

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Formats for Fine-Pitch Gear Specification Data

5. Gear Specification

Formats

for Bevel Gear Data

Tooth Form per ANSIIAGMA

2005B88

Part No.

Part Name

STRAIGHT

BEVEL GEAR DATA*

Basic Specifications xxx

Number of Teeth

xxx.xxxxx

Diametral Pitch Standard Pitch Diameter

xx .xxxxx

Profile Angle

xx.xxxxx”

Shaft Angle

xx.xxxxx”

Pitch Angle

xX.xXxX0

Addendum

.xxxx .xxx

Whole Depth, Minimum Root Angle

xx.xxxx

Face Angle

xX.xXxX0

Outside Diameter

xx.xxxx

o

.xxxxx

-Ref. Circ. Thickness on Std. Pitch Circle

xxx

Ref. Number of Teeth in Mating Gear Mating Gear Drawing Number

xx.xxx

Mounting Distance

Manufacturing and Inspection Control Gear Number Chordal Addendumt

.xxxx

Chordal Thickness t

.xxxx

AGMA Quality Number

QXX

Backlash with Mate or Control Gear at Specified Mounting Distance (MaxJMin.)

.xxxx

Total Composite Tolerance

.xxxx

For data on the determination of bevel gear tooth proportions, see ANSUAGMA For data on inspection and quality class, see AGMA 331.01 and 390.03a. t This may not be applicable to finer pitch gears. l

AGMA

11

2005B88.

910-c90

Formats for Fine-Pitch Gear Specification Data

Tooth Form per ANSIIAGMA 2005B88

I

Part No.

Part Name

SPIRAL BEVEL GEAR DATA* Basic Specifications

I Number

xxx

of Teeth

xxx.xxxxx

1 Diametral Pitch Profile Angle

xxx.xxxxx”

Spiral Angle

xxx.xxxxx”

Standard Pitch Diameter

xxx.xxxxx

I Shaft Angle

xxx.xxxxx”

1 Pitch Angle

xxx.xxxx”

1 Hand of Spiral, Pinion

I Addendum

.xxxx .xxx

I Whole Depth, Minimum 1 Root Angle

I

1 Face Angle

xX.xXxX0

I

Outside Diameter 1 Tooth Form per ANSI/AGMA

I Circ.

2005-B88

.xxxxx

Thickness on Pitch Circle

Ref. Number of Teeth in Mating Gear

xxx

Mating Gear Drawing Number

I Mounting

I

I

Distance

I

xx.xxx

Manufacturing and Inspection r-c

I

Control Gear Part Number

QXX

AGMA Quality Number

.xxxx

Total Comnosite Tolerance Ref. Machine Setup Summary Number Backlash with Mate or Control Gear at Specified Mounting Distance (Max./Mm)

.xxxx

* For data on the determination of bevel gear tooth proportions, see ANSUAGMA For data on inspection and quality class, see AGMA 331.01 and 390.03a.

AGMA

12

2005-B88.

9 lo-c90

Formats for Fine-Pitch Gear Specification Data

6. Gear Specification Formats for Wormgearing Data Tooth Form per AGMA 374.04

Part No.

Part Name

WORMGEAR

DATA

Basic Specifications xxx

Number of Teeth Normal Diametral Pitch

xxx.xxxxx

Normal Profile Angle

xx.xxxxx”

Helix Angle

xx.xxxxx”

Hand (LH or RH) Tooth Form, see AGMA Standard 374.04. Outside Diameter

xxx .xxx

Throat Diameter (if required)

xxx.xxx

Root Diameter, Maximum

xxx.xxx .xxxxx

Normal Circ. Tooth Thickness on Std. Pitch Dia. (Max. Calculated)

Manufacturing and Inspection Pin or Ball Diameter

I

Measurement Over Pins or Balls (Used for inspection if test radius not given)

xxx.xxxxx .xxxx

Total Comoosite Tolerance A

Tooth-to-Tooth

.xxxxx

I

.xxxx

Composite Tolerance

XXX

Mounting Distance

Reference Data Standard Pitch Diameter

I

Circular Pitch

xxx.xxxxx .xxxxx .xxx

Whole Depth, Minimum

QXX

AGMA Quality Number Designed Center Distance

xxx.xxx

Lead of Mating Worm

xx.xxxxx

Pitch Diameter of Mating Worm

xx.xxxxx xx

Number of Threads in Mating Worm Mating Worm Drawing Number NOTE:

AGMA

Normal Diametral Pitch is preferred as the basic design criterion; however, Circular Pitch may be used.

13

910-c90

Formats for Fine-Pitch Gear Specification Data

Tooth Form per AGMA 374.04

Part No.

Part Name

WORM DATA Basic Specifications xx

Number of Threads Normal Diametral Pitch

xxx.xxxxx

Normal Profile Angle

xx.xxxxx”

Lead

xx .xxxxx

Lead Angle

xx.xxxxx”

Hand (LH or RH) Tooth Form; see AGMA

Standard 374.04.

Outside Diameter

xx.xxx

Root Diameter, Maximum

xx.xxx

Normal Circ. Tooth Thickness on Std. Pitch Circle (Max. Calculated)

.xxxxx

Manufacturing and Inspection Pin Diameter

.xxxxx

Pins Measurement Over (Used for inspection if test radius not given)

xx.xxxx

Total Composite Tolerance

.xxxx

Tooth-to-Tooth

.xxxx

Composite Tolerance

Reference Data xx.xxxxx

Standard Pitch Diameter Axial Pitch

.xxxxx .xxx

Whole Depth, Minimum

QXX

AGMA Quality Number

xxx .xxx

Designed Center Distance

xxx.xxxxx

Pitch Diameter of Mating Wormgear Mating Gear Drawing Number NOTE:

Normal Diametral Pitch is preferred as the basic design criterion; however, Axial Pitch may be used.

AGMA

14

9 lo-c90

Formats for Fine-Pitch Gear Specification Data

7. Gear Specification

Formats

for Face Gear Data

Tooth Form per AGMA 203.03

Part No.

Part Name

FACE GEAR DATA Basic Specifications xxx

Number of Teeth Diametral Pitch

xxx.xxxxx

Profile Angle (Cutter)

xx.xxxxx”

Circular Tooth Thickness on Standard Pitch Line (Max. Calculated)

.xxx

Addendum

.xxx

Whole Depth Minimum

.xxx

Outer Diameter

xx.xxx

Inner Diameter

xx.xxx

Manufacturing and Inspection Testing Dimension (Center Line of Pinion to Mounting Surface)

xx.xxxx

QXX

AGMA Quality Number Total Composite Tolerance

.xxxx

Tooth-to-Tooth

.xxxx

Composite Tolerance

Reference Data Mounting Distance

xx.xxxx

Cutter Number Master Gear Specification xxx

Master Number of Teeth NOTE:

AGMA

For data on the determination of face gear tooth proportions, see AGMA 203.03.

15

9 lo-c90

Formats for Fine-Pitch Gear Specification Data

8. Gear Specification Formats for Rack Data

Tooth Form ver AGMA 207.06

Part No.

Part Name SPUR RACK DATA Basic Specifications

I I

Number of Teeth Diametral Pitch Profile Angle

xxx xxx.xxx xx.xxxxxO

Tooth Form Circ. Tooth Thickness on Std. Pitch Line (Max. Calculated)

I

.xxxxx

I

.xxxxx

Manufacturing and Inspection Pin Diameter Pins Measurement Over ---(Used for inspection if test radius not given) Master Gear Specification

’

xx.xxxx

Testing Load Total Composite Tolerance

.xxxx

Tooth-to-Tooth

.xxxx

Composite Tolerance

xx.xxxx

Test Dimension (Max/Mm)

Reference Data xx.xxxx

Standard Pitch Line to Reference Plane

.xxxx

Addendum Whole Depth, Minimum

.xxx

AGMA Quality Number

QXX

Mating Gear Drawing Number

AGMA

16

9 lo-c90

Formats for Fine-Pitch Gear Specification Data

Tooth Form Der AGMA 207.06

I

I

Part No.

Part Name

HELICAL

RACK DATA

Basic Specifications xxx

Number of Teeth

xxx .xxx

Normal Diametral Pitch

xx.xxxxx”

Normal Profile Angle Helix Angle, Hand (LH or RH)

I

xx.xxxxx”

Tooth Form .xxxxx

Normal Circ. Tooth Thickness on Std. Pitch Line (Max. Calculated)

Manufacturing and Inspection Pin Diameter

.xxxxx

Pins Measurement Over (Used for inspection if test radius not given)

xx.xxxx

Master Gear Soecification

I Testing Load I Total Composite Tolerance Tooth-to-Tooth

I

I

.xxxx

Composite Tolerance

xx .xxxx

Test Dimension (Max/Min)

I

.xxxx

Reference Data

I

r Standard Pitch Line to Reference Plane

I

xx.xxxx

Transverse Diametral Pitch

xx.xxxxx

Transverse Profile Angle

xx.xxxxx”

I

.xxxx

Addendum Whole Depth

.xxx

AGMA Quality Number

QXX

Mating Gear Drawing Number

AGMA

17

910-c90

Formats for Fine-Pitch Gear Specification Data

(this page has been left blank)

AGMA

18

910-c90

Formats for Fine-Pitch Gear Specification Data

Appendix A This Appendix consists of blank, pre-printed forms that can easily be copied for the user’s drawings. Tooth Form per AGMA

207.06

Part No.

Part Name

SPUR GEAR DATA Basic Specifications 1 Number of Teeth

I

I

Diametral Pitch Profile Angle 1 Tooth Form Circ. Tooth Thickness on Std. Pitch Diameter (Max. Calculated)

I

Manufacturing and Inspection 1 Outside Diameter

I

I

I

1

Outside Diameter Concentricity (Full Indicator Movement) Root Diameter, Maximum Pin Diameter PiI-lS Measurement Over (Used for inspection if test radius not given) Master Gear Specification

Testine Load Total Composite Tolerance Tooth-to-Tooth

Composite Tolerance

Test Radius (Max/Min)

Reference Data Standard Pitch Diameter Addendum Whole Depth, Minimum AGMA Quality Number Mating Gear Drawing Number

AGMA

19

9 lo-c90

Formats for Fine-Pitch Gear Specification Data

Tooth Form per AGMA 207.06

Part No.

Part Name

INTERNAL

SPUR GEAR DATA

Basic Specifications Number of Teeth Diametral Pitch Profile Angle

I Tooth

Form

1 Circ. Tooth Thickness on Std. Pitch Diameter (Max. Calculated)

I

1

I

Manufacturing and Inspection

I

Diameter I-Inside ~~~ ~~

I

I

I

I

Inside Diameter Concentricity (FuIl Indicator Movement) Root Diameter, Minimum Pin Diameter Pin.5 Measurement Between (Used for inspection if test radius not given) Master Gear Specification Testing Load Total ~~~ Composite Tolerance I~Tooth-to-Tooth

Composite Tolerance

1 Test Radius (Max/Min)

Reference Data Standard Pitch Diameter Addendum Whole Depth, Minimum AGMA

Oualitv Number

Mating Gear Drawing Number

AGMA

20

9 lo-c90

Formats for Fine-Pitch Gear Specification Data

Tooth Form per AGMA 207.06

Part No.

Part Name

HELICAL

GEAR DATA

Basic Specifications Number of Teeth

I

Normal Diametral Pitch Normal Profile Angle Helix Angle, Hand (LH or RH) Tooth Form Normal Circ. Tooth Thickness on Std. Pitch Dia. (Max. Calculated)

Manufacturing and Inspection

I Outside Diameter

I

I

I

1

I

I

Outside Diameter Concentricity (Full Indicator Movement) Root Diameter, Maximum Pin Diameter Pins Measurement Over (Used for inspection if test radius not given) Master Gear Specification Testing Load Total Composite Tolerance Tooth-to-Tooth

Composite Tolerance

Test Radius (MaxiMin)

I

RefeTence Data Standard Pitch Diameter Transverse Diametral Pitch Transverse Profile Angle Addendum Whole Depth, Minimum Lead AGMA Quality Number Mating Gear Drawing Number

AGMA

21

910-c90

Formats for Fine-Pitch Gear Specification Data

Tooth Form oer AGMA 207.06

Part No.

INTERNAL HELICAL

GEAR DATA

Basic Specifications Number of Teeth

I

Normal Diametral Pitch Normal Profile Angle 1~Helix Angle, Hand (LH or RI-I)

I

I

I

I

I

I

Tooth Form Normal Circ. Tooth Thickness on Std. Pitch Dia. (Max. Calculated)

Manufacturing and Inspection Inside Diameter Inside Diameter Concentricity (Full Indicator Movement) Root Diameter, Minimum Pin Diameter

I

Pins Measurement Between (Used for insnection if test radius not given)

I Master

Gear Specification

Testing Load Total Composite Tolerance 1 Tooth-to-Tooth

Composite Tolerance

Test Radius (Max/Min)

I

Reference Data

I

Standard Pitch r-~ Diameter

I

I

! I

I I

Transverse Diametral Pitch Transverse Profile Angie Addendum Whole Depth, Minimum 1 Lead AGMA Quality Number Matinp

AGMA

Gear Drawine Number

22

9 lo-c90

Formats for Fine-Pitch Gear Specification Data

Tooth Form per ANSIIAGMA

2005B88

Part No.

Part Name

STRAIGHT BEVEL GEAR DATA* Basic Specifications

I Number

of Teeth

Diametral Pitch Standard Pitch Diameter Profile Angle 1 Shaft Angle

I

I

Backlash with Mate or Control Gear at Specified Mounting Distance (Max./Min.)

I

I

Total Composite Tolerance

I

I

r

Pitch Angle

Addendum

1 Whole Depth, Minimum Face Angle Tooth Form Outside Diameter Ref. Circ. Thickness on Std. Pitch Circle Ref. Number of Teeth in Mating Gear Mating Gear Drawing Number Mounting Distance

Manufacturing and Inspection Control Gear Number Chordal Addendumt Chordal Thickness? AGMA Quality Number

* For data on the determination of bevel gear tooth proportions, see ANSVAGMA For data on inspection and quality class, see AGMA 331.01 and 390.03a. t May not be applicable to finer pitch gears.

AGMA

23

2005-B88.

9 lo-c90

Formats for Fine-Pitch Gear Specification Data

Tooth Form per ANSIIAGMA 2005-888

Part No.

Part Name

SPIRAL BEVEL GEAR DATA* Basic Specifications Number of Teeth Diametral Pitch Profile Angle Spiral Angle Standard Pitch Diameter Shaft Angle Pitch Angle Hand of Spiral, Pinion Addendum Whole Depth, Minimum Root Angle Face Angle Outside Diameter Tooth Form per ANWAGMA

2005B88

Circ. Thickness on Pitch Circle Ref. Number of Teeth in Mating Gear Mating Gear Drawing Number Mounting Distance

Manufacturing and Inspection Control Gear Part Number AGMA Quality Number Total Composite Tolerance Ref. Machine Setup Summary Number Backlash with Mate or Control Gear at Specified Mounting Distance (Max./Mm) * For data on the determination of bevel gear tooth proportions, see ANSUAGMA For data on inspection and quality class, see AGMA 331.01 and 390.03a.

AGMA

24

2005B88.

9 lo-c90

Formats for Fine-Pitch Gear Specification Data

Tooth Form per AGMA

374.04

Part No.

Part Name WORMGEAR

DATA

Basic Specifications Number of Teeth Normal Diametral Pitch Normal Profile Angle Helix Angle Hand (LH or RH) Tooth Form, see AGMA Standard 374.04. Outside Diameter Throat Diameter (if required) Root Diameter, Maximum Normal Circ. Tooth Thickness on Std. Pitch Dia. (Max. Calculated)

Manufacturing and Inspection Pin or Ball Diameter Measurement Over Pins or Balls (Used for inspection if test radius not given) Total Composite Tolerance Tooth-to-Tooth

Composite Tolerance

Mounting Distance

Reference Data Standard Pitch Diameter Circular Pitch Whole Depth, Minimum AGMA Quality Number Designed Center Distance Lead of Mating Worm Pitch Diameter of Mating Worm Number of Threads in Mating Worm Mating Worm Drawing Number NOTE:

AGMA

Normal Diametral Pitch is preferred as the basic design criterion; however, Circular Pitch may be used. 25

9 lo-c90

Formats for Fine-Pitch Gear Specification Data

Tooth Form per AGMA 374.04

I

Part No.

Part Name

WORM DATA Basic Specifications Number of Threads Normal Diametral Pitch Normal Profile Angle Lead Lead Angle Hand (LH or RH) Tooth Form, see AGMA Standard 374.04. Outside Diameter

Manufacturing and Inspection Pin Diameter Measurement Over ’ (Used for inspection if test ra%s not given) Total Composite Tolerance Tooth-to-Tooth

Composite Tolerance

Reference Data Standard Pitch Diameter Axial Pitch Whole Depth, Minimum AGMA Quality Number Designed Center Distance Pitch Diameter of Mating Wormgear Mating Gear Drawing Number NOTE:

AGMA

Normal Diametral Pitch is preferred as the basic design criterion; however, Axial Pitch may be used.

26

910-c90

Formats for Fine-Pitch Gear Specification Data

Tooth Form per AGMA 203.03

Part No.

Part Name

FACE GEAR DATA Basic Specifications Number of Teeth Diametral Pitch Profile Angle (Cutter) Circular Tooth Thickness on Standard Pitch Line (Max. Calculated) Addendum Whole Depth, Minimum Outer Diameter Inner Diameter

Manufacturing and Inspection Testing Dimension (Center Line of Pinion to Mounting Surface) AGMA Quality Number Total Composite Tolerance Tooth-to-Tooth

Composite Tolerance

Reference Data Mounting Distance Cutter Number Master Gear Specification Master Number of Teeth NOTE:

AGMA

For data on the determination of face gear tooth proportions, see AGMA 203.03.

27

9 lo-c90

Formats for Fine-Pitch Gear Specification Data

Tooth Form per AGMA 207.06

Part No.

Part Name

SPUR RACK DATA Basic Specifications Number of Teeth Diametral Pitch Profile Anele Tooth Form

I

I

I

I

I

I

Circ. Tooth Thickness on Std. Pitch Line (Max. Calculated)

Manufacturing and Inspection Pin Diameter Pin3 Measurement Over (Used for inspection if test radius not given) Master Gear Specification Testing Load Total Composite Tolerance Tooth-to-Tooth

Composite Tolerance

1 Test Dimension (Max/Min)

Reference Data Standard Pitch Line to Ref. Plane Addendum Whole Depth, Minimum AGMA Quality Number Mating Gear Drawing Number

AGMA

28

910-c90

Formats for Fine-Pitch Gear Specification Data

Tooth Form oer AGMA 207.06

Part No.

Part Name

HELICAL

RACK DATA

Basic Specifications Number of Teeth Normal Diametral Pitch Normal Profile Angle Helix Angle, Hand (LH or RH) Tooth Form Normal Circ. Tooth Thickness on Std. Pitch Line (Max. Calculated)

Manufacturing and Inspection Pin Diameter Pins Measurement Over (Used for inspection if test radius not given) Master Gear Specification Testing Load Total Composite Tolerance Tooth-to-Tooth

Composite Tolerance

Test Dimension (Max/Min)

Reference Data Standard Pitch Line to Ref. Plane Transverse Diametral Pitch Transverse Profile Angle Addendum Whole Depth AGMA Quality Number Mating Gear Drawing Number

AGMA

29

9 lo-c90