Simple requests for MC

[DavidB]

I'd really really like to be able to toggle right or left arc type for the lead in. The Roll into cut method works fantastic but MC lacks the ability to program this.

Also is there a way to use a contour toolpath that will move in the depth at each end of the contour? No not ramp and zig zag just go down at each end and backand forth along the chain.

[Scott Lundin Shopware Inc.]

Also is there a way to use a contour toolpath that will move in the depth at each end of the contour? No not ramp and zig zag just go down at each end and backand forth along the chain.

Yes, use contour "ramp plunge" and give it a depth value located just under the plunge box.

[Guest]

Also is there a way to use a contour toolpath that will move in the depth at each end of the contour? No not ramp and zig zag just go down at each end and backand forth along the chain

 

Try using Ramp contour and unchecking One Way Ramping for Open contours

[jeff]

Yes, use contour "ramp plunge" and give it a depth value located just under the plunge box.

All this time, I never knew this was there, and it's staring me right in the face lol.

[Roger Peterson]

Have you tried using dynamic contour to get the lead in you are looking for? If I understand what you want it's to keep the chip thin when the cutting edge is leaving the stock and dynamic contour will maintain your chip load.

[DavidB]

I was at a customers today who use PowerMill and they could use a rad and a sweep angle for the lead in. The big advantage was they could use a right or left arc as the lead in.

Rolling into cut will increase your tool life.

 

MC will only create an arc entry on the side of the line you are cutting. The onlw way I can get MC to give a good toolpath entry is to create geom for every pass.

 

http://www.youtube.com/watch?v=vkKW5Wmgx7g

[gcode]

This would make an excellent enhancement but there are ways to do it

 

draw your toolpath geometry as C/L geometry

set your Compensation Type to off

now you can control lead-in arc behavior with the Comp left/right switch

[djstedman]

I have seen this mentioned a number of times.. could someone elaborate on the 'hows and whys' of how this entry method extends tool life.. or maybe a link if anyone has one.. I know it has to do with chip load when entering the cut I just havent been able to get my mind around how its different depending which way you enter the cut. .

 

lol nm .. after posting this I realized the original post had a video .. duh..

[uncle_dolan]

Yes, use contour "ramp plunge" and give it a depth value located just under the plunge box.

 

This is amazing! I've been wanting to do this for ages but didn't know how! thanks so much!

[Roger Peterson]

curve 5 axis toolpath can lead in left or right relative to cut direction. So if you have the multiaxis or curve/drill 5 axis functionality you can do this.

 

Does Dynamic Contour not give the lead in motion you want?

 

I can see for a basic zig zag facing operatioin this would be a good enhancement. - But facing does have dynamic motion as an option.

[gcode]

Watch the linked video, then watch the Coroplex390 video.

Looks pretty cool, but is it pratical??

Comments from the millturn gurus???

[Greg Williams]

Dave, Have you changed jobs?

[DavidB]

Hi Greg, Yes mate I'm looking after the Aerospace customers as an Applications Engineer for Sandvik.

 

I'd like CNC to add the option of a left or right hand entry arc in the 2D Contour Toolpath.

 

P.S Happy Birthday Greg for Yesterday