Back Countersinking

Siemens PLM Software

NX CAM 10.0.3: Back Countersinking New operation that countersinks the back side of holes.

Answers for industry.

About NX CAM NXTM CAM software has helped many of the world’s leading manufacturers and job shops produce better parts faster. You can also achieve similar benefits by making use of the unique advantages NX CAM offers. This is one of many hands-on demonstrations designed to introduce you to the powerful capabilities in NX CAM 10.0.3. In order to run this demonstration, you will need access to NX CAM 10.0.3. Visit the NX Manufacturing Forum to learn more, ask questions, and share comments about NX CAM.

2

Hands-on Demonstration: Back Countersinking Back Countersinking is a new hole making operation subtype that allows you to machine modeled and non-modeled chamfers on the back side of holes (side opposite where the tool enters). Each chamfer is machined using a single linear motion. This operation requires a supported back countersinking tool.

3

Prerequisites: 1. You will need access to NX CAM 10.0.3 in order to run this demonstration. 2. If you haven’t done so already, download and unzip back_countersinking.7z.

Demo: 1. Open back_countersinking.prt in NX. Note: If the part is not translucent as shown below, choose MenuPreferencesVisualization, click the Visual tab, and select the Translucency check box.

Examine the geometry and hole making operations You will begin by looking at the geometry groups and operations that drill, bore, and mill the holes prior to back countersinking.

1. In the Geometry View of the Operation Navigator, select the FG_STEP1HOLE geometry group. This geometry group contains four recognized holes with modeled chamfers. These holes have been drilled and bored.

4

2. Select the FG_STEP1HOLE_1 geometry group. This geometry group contains a single recognized hole with a modeled chamfer that requires a larger tool. This hole has been milled.

Create a back countersinking operation for the small holes containing recognized feature geometry You will begin by creating a back countersinking operation for the four small holes on the top of the part in the FG_STEP1HOLE feature group. 1. Click Create Operation. 2. Select hole_making from the Type list. 3. Select Back Countersinking . 4. Specify the following: Program: PROGRAM Tool: BACK_COUNTERSINK_15.5 Geometry: FG_STEP1HOLE Method: HOLE_MILL_METHOD 5. Click OK. 6. Click Display

next to Specify Feature Geometry.

5

7. In the Tool section of the dialog box, click Edit/Display 8. Select the More Tab. 9. Expand the Tracking section of the dialog box. 10. Click Tracking Points

.

.

The tool contains three system-defined tracking points.

Note: Drive Point and Tracking Data options must be customized into the operation dialog box. 11. Click Cancel twice to return to the operation dialog box.

12. Click Generate

.

13. Click Verify . 14. Select the Replay tab. 15. Slow down the Animation Speed to 7 and click Play

.

6

On the approach, NX positions the tool centerline over the hole centerline in non-spinning mode (1), then shifts the tool off-center by the calculated amount (2). 1

2

The neck on the back of the countersinking tool is offset from the centerline of the shank. The tool selected for the operation must have a Minimum Hole Diameter (MHD) that is less than the hole diameter.

Note: The necessary minimum shift distance is calculated automatically using (D-MHD)/2. You may override this value by specifying a Nodrag Clearance in the Cycle Parameters dialog box. The Nodrag Clearance defines the distance between the insert and the wall of the hole.

7

After engaging into the hole (3), NX shifts the tool to the hole centerline (4), switches to spinning mode and cuts the chamfer with a backwards motion (5). 4

3

5

After completing the cut, NX reverses the procedure to retract out of the hole.

The operation determines the in-process feature volume. 16. Select the 3D Dynamic tab. 17. Click Play

.

18. Click OK to complete the tool path visualization. 19. Click OK to complete the operation. 8

Create a back countersinking operation for the large hole containing recognized feature geometry You will create a back countersinking operation for the large hole on the side of the part in the FG_STEP1HOLE feature group using a bigger tool. 1. Click Create Operation. 2. Specify the following: Program: PROGRAM Tool: BACK_COUNTERSINK_55 Geometry: FG_STEP1HOLE_1 Method: HOLE_MILL_METHOD 3. Click OK. 4. Click Display

next to Specify Feature Geometry.

5. Click Generate

.

6. Click Verify . 7. Select the Replay tab. 8. Change the view orientation to Top and click Step

twice.

Notice that the automatically calculated shift distance is fairly large.

9

You will specify a Nodrag Clearance to reduce this distance. 9. Click OK to complete the tool path visualization. 10. Click Edit Cycle . 11. Select the Nodrag Clearance Status check box. 12. Type 1.0000 in the Nodrag Clearance box. 13. Click OK in the Cycle Parameters dialog box. 14. Click Generate 15. Click Verify

. and click Step

twice.

Notice that the distance between the insert and the wall of the hole has been reduced, resulting in less wasted tool movement.

16. Click Play . 17. Click OK to complete the tool path visualization. 18. Click OK to complete the operation.

Create a back countersinking operation for a non-modeled chamfer You will create a back countersinking operation for the small hole on top of the part that does not have a modeled chamfer. 1. Click Create Operation. 2. Specify the following: Program: PROGRAM Tool: BACK_COUNTERSINK_15.5 Geometry: MCS_TOP Method: HOLE_MILL_METHOD 3. Click OK. 4. Click Specify Feature Geometry . 5. Change the view orientation to Isometric. 10

6. Select the face of the hole.

7. Click OK. 8. Click Generate 9. Click Verify 10. Click Play

. .

.

11. Select the 3D Dynamic tab. 12. Click Play

.

11

13. Click OK to complete the tool path visualization. 14. Click OK to complete the operation. 15. Close the part without saving.

12

Siemens Industry Software Headquarters Granite Park One 5800 Granite Parkway Suite 600 Plano, TX 75024 USA +1 972 987 3000 Americas Granite Park One 5800 Granite Parkway Suite 600 Plano, TX 75024 USA +1 314 264 8499 Europe Stephenson House Sir William Siemens Square Frimley, Camberley Surrey, GU16 8QD +44 (0) 1276 413200 Asia-Pacific Suites 4301-4302, 43/F AIA Kowloon Tower, Landmark East 100 How Ming Street Kwun Tong, Kowloon Hong Kong +852 2230 3308

About Siemens PLM Software Siemens PLM Software, a business unit of the Siemens Industry Automation Division, is a leading global provider of product lifecycle management (PLM) software and services with seven million licensed seats and more than 71,000 customers worldwide. Headquartered in Plano, Texas, Siemens PLM Software works collaboratively with companies to deliver open solutions that help them turn more ideas into successful products. For more information on Siemens PLM Software products and services, visit www.siemens.com/plm.

© 2015 Siemens Product Lifecycle Management Software Inc. Siemens and the Siemens logo are registered trademarks of Siemens AG. D-Cubed, Femap, Geolus, GO PLM, I-deas, Insight, JT, NX, Parasolid, Solid Edge, Teamcenter, Tecnomatix and Velocity Series are trademarks or registered trademarks of Siemens Product Lifecycle Management Software Inc. or its subsidiaries in the United States and in other countries. All other logos, trademarks, registered trademarks or service marks used herein are the property of their respective holders. 3/15

www.siemens.com/plm/nxmanufacturingforum

13