[xj5373]

Hi,
Trying to make inroads into V24 turn - I have a simple part - essentially a 1" diameter roller where one end is tapered - the surface is a part of an arc. I am trying to do a rough pass and a finish pass. The finish pass looks ok (so the geometry is selected right) but the rough pass seems to give up after a few cuts leaving the finishing pass with a lot of work to do near the end of the job. I am sure this is something obvious but it is beating me at the moment. Any ideas?
Ian

[aldepoalo]

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When you are using system comp BobCAD offsets the tool path based on the tool insert and the holder if defined.


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But in your sample there seem to be an issue with the software offsetting for the tool where it doesn't need to be....

What I did is extend the od profile down the face just a tit and it seems to resolve that issue. ( band aid )

The other option would be to turn system comp off.

[xj5373]

hi Al,
Thanks for this - I have put a tiny radius on the end of the part and that seems to have sorted it. Is this a bug then?
Ian

[The Engine Guy]

hi Al,
Thanks for this - I have put a tiny radius on the end of the part and that seems to have sorted it. Is this a bug then?
Ian

Looked at your file.

Just turn the "system comp" off and it will work fine, doesn`t work right and never has done on any version as far as I know, I don`t know anyone who uses it to be honest

Just do any "comp" you need at the machine control, much easier and better all round.

Regards

[TonyW]

I've always used system comp in Bobcad for my Okuma lathe, both V24 and V25. Has always worked for me and made probably a couple hundred programs. But I did go through all the tools and was very specific when I set them all up in tool file. Other thing I normally do is snap small lines on and off the part that I use for leads instead on using the 'vector leads' built into bobcam. This way I am always sure of exactly where the tool is going, both on and off the part.