HSMWORKS Radial toolpath depth violation

[nfelton]

  I'm having an issue with the radial toolpath in Hsmworks.  Regardless of how I set my cut heights it always goes deeper than the level I've set. I've tried setting everything absolute from origin and specifying my depth. I've also tried setting my depth from the selection and model top and bottom. I have also adjusted my machining boundaries several times but nothing seems to keep it from violating my depth.  I was lucky with the particular part that I'm running but obviously this could be catastrophic in the proper scenario.  Has anyone else experienced this?

[Laurens-3DTechDraw]

Are the actual cutting passes violating the depth or are the leads/linking passes the culprit?

[nfelton]

 It is the lead/linking passes that I'm struggling with. I can't seem to keep them from violating my cut depths.  I have to modify the cut depth by .077" to keep it from going past my maximum z depth.

[Laurens-3DTechDraw · Accepted solution]

Well that is "By design".

For some reason development thinks this is a reasonable thing to do. And if you don't want it to go below you have to model something. I've found this weird the first time I heard about it, but they stick to it no matter what you say.

So it's something you will learn to live with.

[aewrmc]

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@Laurens-3DTechDraw wrote:

Well that is "By design".

For some reason development thinks this is a reasonable thing to do. And if you don't want it to go below you have to model something. I've found this weird the first time I heard about it, but they stick to it no matter what you say.

So it's something you will learn to live with.

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So how is one supposed to find out about this? What is the use of an arbitrary bottom limit?

The other CAM system that I use previously did the same thing they then modified the link moves to have an option for it to not go past the bottom.

[Laurens-3DTechDraw]

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@aewrmc wrote:

So how is one supposed to find out about this? What is the use of an arbitrary bottom limit?

The other CAM system that I use previously did the same thing they then modified the link moves to have an option for it to not go past the bottom.

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Well good question.

I guess you don't.

It might help to set the leads to straight line, instead of smooth, but there doesn't seem to be a fix for this on the horizon.

[ArjanDijk]

Totally agree. Was also a bit surprised to see Zmin -0.44 in the top of my program, while the lowest Z I gave out was -.1. I have to look back, but is was not only the leads, but also a ball mill that wants to stay in contact with the surface.

[Laurens-3DTechDraw]

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@ArjanDijk wrote:

Totally agree. Was also a bit surprised to see Zmin -0.44 in the top of my program, while the lowest Z I gave out was -.1. I have to look back, but is was not only the leads, but also a ball mill that wants to stay in contact with the surface.

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Boundaries and Confinements can be seen as contact points.

Heights though are hard limits for cutting passes, just not for the linking passes.

So it shouldn't go past the bottom for actual cutting passes.