Answers for industry.
Siemens PLM Software
NX CAM 10.0.3:
Back Countersinking New operation that countersinks the back side of holes.
2
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.
3
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.
4
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 MenuPreferencesVisualization,
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.
5
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.
6
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 .
7
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.
8
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).
3
4
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.
9
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.
10
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.
11
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 .
12
13. Click OK to complete the tool path visualization.
14. Click OK to complete the operation.
15. Close the part without saving.
13
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
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