Can anyone explain how to stop the tool from gouging the surface when 3d roughing or finishing a pocket? I've even tried offsetting the vector that represents the boundry of the pocket but that didn't fix it. See the attached images for an example.
Thanks,
Mark
Surface gouging
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metalworkz
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Re: Surface gouging
Hi Mark,
I think you have to select the profile vectors and the material border and create a component for the surface area surrounding the part. If the surface plane is not a component then the boundaries of the profile are not well defined. Brian has posted the method for this in another post but I couldn't seem to find it now.
I think you have to select the profile vectors and the material border and create a component for the surface area surrounding the part. If the surface plane is not a component then the boundaries of the profile are not well defined. Brian has posted the method for this in another post but I couldn't seem to find it now.
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metalworkz
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Re: Surface gouging
I found the reply Brian had made to a similar post:
"The problems occur because there is nothing outside the component. It is a dish 'floating in thin air' and where you have some of the boundary points at say -0.05", the next point on the model is 'transparent' so the tool can fit in at a depth of .05 without damaging any defined points on the model. The 'transparent' plane shown in the 3d view is only there to help visualize the extents of the working area, it is not a 'real' physical part of the model which is machined.
If you are using negative components, it almost always makes sense to make a 'flat' component to represent the surface of your material. This allows the machining to know that the area outside the component is actually meant to be retained as the material surface.
I hope the above makes sense."
"The problems occur because there is nothing outside the component. It is a dish 'floating in thin air' and where you have some of the boundary points at say -0.05", the next point on the model is 'transparent' so the tool can fit in at a depth of .05 without damaging any defined points on the model. The 'transparent' plane shown in the 3d view is only there to help visualize the extents of the working area, it is not a 'real' physical part of the model which is machined.
If you are using negative components, it almost always makes sense to make a 'flat' component to represent the surface of your material. This allows the machining to know that the area outside the component is actually meant to be retained as the material surface.
I hope the above makes sense."
Re: Surface gouging
Thanks Wes,
Per your instructions, I'll give it a try tonight. So I just select the out linning vector and the border, then make component? Is it nessisary to have a thickness?
Mark
Per your instructions, I'll give it a try tonight. So I just select the out linning vector and the border, then make component? Is it nessisary to have a thickness?
Mark
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metalworkz
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Re: Surface gouging
Hi Mark,
I am not sure if it needs a thickness, but I think the flat component will basically define the area along the plane where the profile of the part meets the surface. I guess if the component needs a thickness I would just input a minimal thickness to complete the form and give it a try. I believe the part you are making will define the edges of the part above and below the surface plane.
I am not sure if it needs a thickness, but I think the flat component will basically define the area along the plane where the profile of the part meets the surface. I guess if the component needs a thickness I would just input a minimal thickness to complete the form and give it a try. I believe the part you are making will define the edges of the part above and below the surface plane.