4th Axis Limit

[Mick]

Hi there,

 

I'm working through a problem with a customer. They're using Axis substitution, to machine an auger. The toolpath back plots ok, but when it posts the A output has very high values, up to A6205.23. It appears their machine doesn't like A output greater than 360 degrees. Is there a way for the post, or indeed Mastercam, to break the moves along this contour so there is no A output greater than 360 degrees? Somehow the contour needs to be broken, because an example move has for example A4317.305, and on the next line the A value is 5308.228, which is a rotary move of 990.923.

I've uploaded the file in the MC9 folder on the FTP, as ZOOM SCREW.MC9.

Any help would of course be appreciated

 

Regards,

 

Mick

[Brendan P]

quote:

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Is there a way for the post, or indeed Mastercam, to break the moves along this contour so there is no A output greater than 360 degrees?

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Mick,there is.

Look for this line in your post:

one_rev : 1 #Limit rotary indexing between 0 and 360? (0 = No, 1 = Yes)

 

But I'm not soo sure that this will work for you.

You want that rotary to keep consistantly turning.

I kinda believe if you change this,the rotab will want to "unwind" on you.

At least this is the way it is for us.

I do believe there is a parameter change you can set in the machine control that will allow the accumulative "A" moves.

HTH

[Mick]

Well, it turned out that it was indeed a parameter setting. The customer ended up machining the part, and it came out great. Thanks for your response

 

Cheers,

 

Mick