back countersinking

7/25/2019 Back Countersinking

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Answers for industry.

Siemens PLM Software

NX CAM 10.0.3:

Back CountersinkingNew operation that countersinks the back side of holes.


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About NX CAM

NXTMCAM software has helped many of the worlds 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 inNX CAM 10.0.3. In order to run this demonstration, you will need access to NX CAM 10.0.3.

Visit theNX Manufacturing Forumto learn more, ask questions, and share comments about NX CAM.
http://community.plm.automation.siemens.com/t5/NX-Manufacturing-Forum/ct-p/part-manufacturinghttp://community.plm.automation.siemens.com/t5/NX-Manufacturing-Forum/ct-p/part-manufacturinghttp://community.plm.automation.siemens.com/t5/NX-Manufacturing-Forum/ct-p/part-manufacturinghttp://community.plm.automation.siemens.com/t5/NX-Manufacturing-Forum/ct-p/part-manufacturing


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Hands-on Demonstration: Back Countersinking

Back Countersinking is a new hole making operation subtype that allows you to machine modeledand non-modeled chamfers on the back side of holes (side opposite where the tool enters). Eachchamfer is machined using a single linear motion. This operation requires a supported backcountersinking tool.


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Prerequisites:

1. You will need access to NX CAM 10.0.3in order to run this demonstration.

2. If you havent doneso already, download and unzipback_countersinking.7z.

Demo:

1. Open back_countersinking.prt in NX.

Note: If the part is not translucent as shown below, choose MenuPreferencesVisualization,

click the Visualtab, and select the Translucencycheck 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_STEP1HOLEgeometry group.

This geometry group contains four recognized holes with modeled chamfers. These holes have

been drilled and bored.


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2. Select the FG_STEP1HOLE_1geometry 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_makingfrom the Typelist.

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.


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7. In the Tool section of the dialog box, click Edit/Display .

8. Select the MoreTab.

9. Expand the Trackingsection 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 Canceltwice to return to the operation dialog box.

12. Click Generate .

13. Click Verify .

14. Select the Replaytab.

15. Slow down the Animation Speedto 7and click Play .


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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).

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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 mayoverride this value by specifying a Nodrag Clearancein the Cycle Parameters dialog box. TheNodrag Clearance defines the distance between the insert and the wall of the hole.


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

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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 Dynamictab.

17. Click Play .

18. Click OKto complete the tool path visualization.

19. Click OKto complete the operation.


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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.


2. Specify the following:

Program: PROGRAM

Tool: BACK_COUNTERSINK_55

Geometry: FG_STEP1HOLE_1


3. Click OK.

4. Click Display next to Specify Feature Geometry.

5. Click Generate .

6. Click Verify .

7. Select the Replaytab.

8. Change the view orientation to Topand click Step twice.

Notice that the automatically calculated shift distance is fairly large.


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You will specify a Nodrag Clearance to reduce this distance.


10. Click Edit Cycle .

11. Select the Nodrag Clearance Statuscheck box.

12. Type 1.0000in the Nodrag Clearancebox.

13. Click OKin the Cycle Parametersdialog 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 OKto complete the tool path visualization.


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.


2. Specify the following:Program: PROGRAM

Tool: BACK_COUNTERSINK_15.5

Geometry: MCS_TOP


3. Click OK.

4. Click Specify Feature Geometry .

5. Change the view orientation to Isometric.


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6. Select the face of the hole.

7. Click OK.

8. Click Generate .

9. Click Verify .

10. Click Play .

11. Select the 3D Dynamictab.

12.Click Play .


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15. Close the part without saving.


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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 LifecycleManagement 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.

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