Chamfering Issue

[SteveLucas]

When I use the automated chamfering sequence I have a problem. If your chamfer angle doesn't match the tool even by a few minutes or seconds of the chamfer angle it won,t cut the chamfer.

When dealing with molds this happens a lot of times for me with drafted surfaces. Here is an example of what I am talking about.

the surface circled in blue has a draft on the side wall so the chamfer will not cut it and throws the error message circled in red.

I think there needs to be a setable angle tolerance for the chamfer sequence because it is just used to break edges and is not a precise cut by any means. If I want a precise angle chamfer I will surface it with a ball end mill.

the work around is to cut it with a trajectory tool path but that is not as easy as just selecting the chamfers with the chamfer sequence.

I was wondering if anyone else has seen this problem before I go to tech support? 

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[joshuataylor · Accepted solution]

That has been my experience.

What is needed is an edge break sequence, so you don't need a modeled chamfer of any sort to program edge breaks.

[RaphMORIN]

I never use auto chamfer tools because it rarely does what I want. I only use trajectory milling and it's quite easy and quick to do by selecting chains.

[razmosis]

When I encounter this situation, I redefine the chamfer in the model to be "angle x D" (rather than DxD)  and reference a surface that is not drafted.  If you are putting the chamfer in as a 45 between a drafted surface and a flat one, the chamfer tool won't work unless you change the definition of the tool to match the actual angle that the chamfer created.

[SteveLucas]

thanks to everyone who replied.

All the replies were correct as far as my question goes they all work.

Raphael,Yes I do use trajectory milling sequence for this situation when the chamfer is really important.But that takes a lot more effort to set up than it really needs to be when the chamfer is already on the part.

Matt, I should not have to go into the part and modify it to cut a simple edge break chamfer if it is already there. again a lot more effort then what is necesary as far as I am concerned when we are looking for quick turn around programs that you just select the geometry and cut.