Need help for a pocket...

[jp]

Hi,

 

I would like to execute a pocket like I did in the Op #2 and #3 without editing my toolpath

I would like to enter in the center witch is outside of my pocket boundry, witch seem to cause problem....

 

The file is on the FTP in the MCX_MR2_or Earler_Files folder and it's name POCKET HLP.MCX

 

Thank you

 

JP

Industrials Products RGI

McX MR2

[Tim Simmermon]

Try using the Circle Mill Toolpath. I put my changes in the same folder called POCKET HLP TIM.MCX

[Tim Simmermon]

It's not letting me on the FTP, so I'll explain it. You used a pocketing routine and then transformed 7 times on the Z axis. Doing that is the same as doing depth cuts. This can be done in the pocketing routine as well. The feature you are trying to machine is more suited for the circle mill toolpath with roughing set to 75% Stepover and Depth Cuts set to .125. There is a box to check on the parameters that will allow your toolpath to start in the center of the circle.

[jp]

Tim,

 

Thanks for your responce, I had already tried your sugestion but the problem is that I pre drill first a 1-1/4 hole to the bottom and then finish the top pocket. So it's a waste of time to machine air in the middle like the circle mill option proposed me. I would realy like to enter in the center and then proced to the pocketing operation.

 

The reason why I use the transform is because I edit the source toolpath so that it enter in the center and then proceed with the pocket. This way it require less toolpath modification.

 

I realy need the fastest way of doing this...

 

Thanks

JP

[Guest]

INstead of wasting time predrilling the hole why not just helix or ramp down. Then you don't have to worry about "wasting" time, you're always cuttiong metal

[Tim Simmermon]

On the circle mill toolpath - use Multi Pass instead of Roughing. This will allow you to set the number of roughing passes and stepover, without cutting air. As John said though, using a helix path will cut faster than a drill.

[Bryan Johnson]

+1 to circle mill.

For a predrilled circle, this would be the most efficient path.

[specv]

jp,

I loaded a the file called SPEC V POCKET HLP.MCX

I think that is what you are looking for.

[Guest]

Take a look at JMP_POCKET HLP.mcx in the same folder.

 

Why you would use circle mill on that hole is beyond me but hey, different strokes

[jp]

Pete,

 

Thats more like it, meanwhile I would have like to not have a lead-in in the second pass, but I can deal with it...

 

As for the reason why I drill before is because the hole is 3" deep and it is more rapid to use a U-drill (7.5 sec) then to use a milling toolpath. I don't have to deal with vibration and chip load in the bottom of the hole...

 

Thanks everyone

JP

[jp]

John,

 

I just saw your toolpath, It's in fact the exact same toolpath that I endup with...

 

Thanks

JP