contoured chamfer milling 1

[TheWonderer]

I am a new user of NX and would appreciate any assistance on chamfer milling. I have been browsing these forums for days now and trying various examples, but I am struggling to get NX to do what I could do easily in Edgecam.
I need to chamfer the front and back edges of a slot through a cylinder, so need a toolpath where the tool moves in Z as well as X and Y. The Z stroke isn't too big, so I don't want to use B axis moves - just move to the B axis position then chamfer the slot. I tried planar milling, but this doesn't allow Z movement. I tried numerous contouring toolpaths, but can't get a satisfactory result. I created a user defined tool with tracking points, but the option to use them isn't there when contouring.
I know it's asking a lot, but can anyone post a step-by step for me to follow.

 

[Tingsryd]

Could you post an image of what you are trying to do?

11.0.2

 

[joycejo]

This is a common operation without a "Simple" solution. However it can be done by being a little creative.

Take a look at the attached file.

I created a chamfering tool using the step-drill dialog.

Then created an offset curve to define the tool path center-line

The operation is Fixed_contour using the offset curve as the drive method. Take a look at the projection vector - very important!

I am sure there are several other ways this can be done in NX. This is just the way I have found it to work and get good results.

John Joyce
Manufacturing Engineer
Senior Aerospace CT
NX 10 & 11.0.1 Vericut 8.0

 

[TheWonderer]

Sorry for the delay in replying, but I was out of the office last week. Thanks for the replies.
The example posted by John is exactly what I am trying to do, but could you tell me how you create the offset curve - as I said, new user, so nothing is easy for me.

Tingsryd, I have uploaded a jpg as requested.

Any other help on chamfering inside and outside of slot would be appreciated.

 

[TheWonderer]

jpg attached this time hopefully

 

[joycejo]

What version of NX are you using?

To create an offset curve use

the Offset curve dialog

Menu - Insert - Derived Curve - Offset

John Joyce
Manufacturing Engineer
Senior Aerospace CT
NX 10 & 11.0.1 Vericut 8.0

 

[TheWonderer]

I'm using NX10.