Dumb Question....

Topics related to wrapped rotary machining in Aspire or VCarve Pro

Dumb Question....

Postby dciliberti » Wed Feb 28, 2018 9:26 pm

What is the difference in the following Post processers?
Wrap Y Orient X
Wrap Y Orient Y
Wrap Y Orient Xrf
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Re: Dumb Question....

Postby IslaWW » Wed Feb 28, 2018 9:56 pm

Those appear to be one mfgr's naming convention for rotary wrapped post processors. Each mfgr comes up with their own convention for axis names and what options are supported.

That said, in the normal convention, a wrapped post processor will take code from one horizontal axis and convert to degrees for rotary axis movement by wrapping it around the "other"

If the axial direction (between the headstock and tailstock) is X (left to right), then Y (front to back) code is converted to rotary (normal convention A) the postP nickname would usually be a variation of "Y to A" or "Y2A"


If the axial direction (between the headstock and tailstock) is Y (front to back), then X (left to right) code is converted to rotary (normal convention B) the postP nickname would usually be a variation of "X to B" or "X2B"

That said, very few mfgrs follow the convention, they simply name the rotary axes whatever they want, resulting in numerous combos of rotary wrapped post names. What's important for a user selecting one for his use, is that if your rotary is oriented in X or Y direction, you will select a post that has the other in the name. Perfectly clear???

Also.. in normal operation a rotary axis will move negative when converted from positive horizontal code. This is similar to a moving table CNC or mill. The table must move negative so that the bit is cutting positive.
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Re: Dumb Question....

Postby dciliberti » Wed Feb 28, 2018 10:21 pm

Thanks for the response. I have the headstock and tailstock on the Y axis (front to back) From what I gather from your explanation I would wrap X. The machine manual wants me to wrap Y? What does the Orient part of the equation stand for?

In Aspire the 3d view is correct when I wrap Y values around x axis.
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Re: Dumb Question....

Postby IslaWW » Thu Mar 01, 2018 12:43 am

You should ask the mfgr of the machine. I gave my info as intentionally generic. Only the mfgr of the machine or the person that wrote the postP would know for sure
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Re: Dumb Question....

Postby LittleGreyMan » Thu Mar 01, 2018 7:44 am

If the post-processor is correctly commented, you may find valuable information if you open it with a text editor.
Best regards

LGM

W7 - Aspire 8.517
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Re: Dumb Question....

Postby dciliberti » Thu Mar 01, 2018 3:23 pm

LittleGreyMan - Bingo! Opened with notepad and all info listed. Thank you!
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