Multi start threading in Mill ?

[Gutty]

Hey guys, i need to do an 8 start thread in mill X4. Is there any simple way of doing it ?

 

Cheers

Matt

[BenK]

You could use 8 different toolpaths with different start angles.

[Guest CNC Apps Guy 1]

Or... you could transform rotate the toolpath (as long as it's only one hole) for the number of starts minus one and set the rotation angle and the origin would be the center of the hole.

 

HTH

[Superman]

or similar to Apps,

8 circles on top of each other, each rotated by 45°

pick the circles, not the centrepoints. The circle dictates the thread OD.

[Gutty]

Thanks guys, i figured the easiest way would be to just have 8 different start angles.

I have to do a bunch of different threads, all with different amounts of starts so was hopeful i could juts enter the parameters and be done with it...

 

Cheers

Matt

[SKIR68]

toolpath; transform; rotate.

[Gutty]

Yeah, or that... ;-)

[Gutty]

Ok so i now have another problem. Using the threading toolpath i can't get it to only do 0.8 of a revolution. No matter what i set my top and bottom depths at it always does 1.5 revolutions. I can't have the thread run out the top of the core/job...

 

Anyone have any ideas ?

 

Thanks

Matt

[Ron Branch @ Verisurf]

Check your settings for the depth of thread. Remember that the rest of the settinga are absolute from your home position.

[Gutty]

Thanks for the reply, but didn't seem to matter what i set the depth to it always wanted to run out the top of the job.

Ended up drawing the splines and doing a contour toolpath.

 

Cheers

Matt

[htm01]

quote:

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I can't have the thread run out the top of the core/job...

 

Anyone have any ideas ?

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you could cut arcs and edit in the "Z"