surface pocket issue

[brandon b]

Using a bull nose endmill with the surface pocket toolpath.  ive always had trouble getting 100% cleanup at each z depth.

 

cant figure out how to get a full cleanup.  

HELP.MCX-7

[ajmer]

try checking the stepover, there is an option for diameter or flat section of the tool

[brandon b]

I've gone way down to like 40% stepover... 2 inch cutter with .25r should be able to cleanup at 1.4 step over

[Guest]

I think you might have better results moving over to an Surface High Speed Core path...

 

Gotta be honest, I do a fair bit of surface machining and I have not used that path in years at this point

[brandon b]

I have nice opti core path. But these damn fadal will not take it. Memory can't hold the unfiltered path. If I filter it the fadal throws a helical move too short error

[brandon b]

This is frustrating me so bad right now.

[Rick46]

change your step over to 50% to 60% of cutter diameter and also try using parallel spiral clean corners option for your roughing approach.

[brandon b]

Trying to keep the cycle time dowm.. I know I'll have to what it takes to get the job done. I have true spiral working at 1.4 stepover but takes 2 hours longer.

[Ocean Lacky™]

I'd use a HS Core Rough with 65% step over.

[duckdogers]

I sometimes use a finish toolpath to clean it up.Just leave stock and put depth limits where the other op left off

[brandon b]

Problem I'm having is that I need 100% cleanup on each depth. Otherwise the inserts get destroyed when it finally overlaps those "pegs" sticking up.

 

Opticore worked alright, but the first cut doesn't engage very much so the inserts are just slapping the material.

 

I have core roughing programmed just trying to get 5 other machines up and running first

[crazy^millman]

Problem I'm having is that I need 100% cleanup on each depth. Otherwise the inserts get destroyed when it finally overlaps those "pegs" sticking up.

 

Opticore worked alright, but the first cut doesn't engage very much so the inserts are just slapping the material.

 

I have core roughing programmed just trying to get 5 other machines up and running first

 

Change your depth zone. To make any HST toolpath cut deeper on the 1st cut lie to it. Tell it that the Z min Height is below what it thinks it is and it will take a nice 1st cut.

 

Example Top of the Rough stock is Z0 and my depth of cut is .25. I will make the Z min -.25 and the max the depth I want the toolpath to take stays the needed depth. Now I get rid of any possible air cuts for roughing. Have to be careful as the step up will also be limited to -.25, but when I ave to go this route I normally will not step up and use Surface finish Contour and use the bottom up process.

 

HTH

[Thee Rickster ™]

horizontal works well

 

 

 

 

 

File Example attached

HELP HORZ.MCX-7

[brandon b]

Change your depth zone. To make any HST toolpath cut deeper on the 1st cut lie to it. Tell it that the Z min Height is below what it thinks it is and it will take a nice 1st cut.

 

Example Top of the Rough stock is Z0 and my depth of cut is .25. I will make the Z min -.25 and the max the depth I want the toolpath to take stays the needed depth. Now I get rid of any possible air cuts for roughing. Have to be careful as the step up will also be limited to -.25, but when I ave to go this route I normally will not step up and use Surface finish Contour and use the bottom up process.

 

HTH

already been doing that. I meant radially. The first pass at each depth gradually enters the part. So the first 45 inches of cut is between 10 and 40 % other diameter.

[brandon b]

horizontal works well

 

 

 

 

 

File Example attached

I'll download this when I get A chance. Thanks

[Thee Rickster ™]

hopefully it will suffice to your liking.

might have to change a few feed settings etc (entry)

[brandon b]

How can I force it to entry off the part?

[Jayson Kramer]

I will pulll the file after I reload X8. I have done these on fadal and there are setting I turn off so that it will not Arc error out.

[Thee Rickster ™]

I'm at home an no hasp, but I wonder if you can do an opticore with stock to leave on sides but not z.

 

Then set the z limits in steep shallow to only make one pass on the final z level.

 

That should lead it in off the part.... If feesable

 

Jay, canyougive it a shot in X7?

[brandon b]

Thanks guys. Jay if you can do it in x7 that would be great. I don't have x8 yet. Tried to download it when it was released but it never would work.

[brandon b]

I'm at home an no hasp, but I wonder if you can do an opticore with stock to leave on sides but not z.

 

Then set the z limits in steep shallow to only make one pass on the final z level.

 

That should lead it in off the part.... If feesable

 

Jay, canyougive it a shot in X7?

not sure if you understand. The surface pocket path is leaving material at random depths. I'm taking of like 1.5" of material at .035doc. So it's not just the final depth it's almost everyone

[brandon b]

I will pulll the file after I reload X8. I have done these on fadal and there are setting I turn off so that it will not Arc error out.

I got the opticore and core roughing toolpath to run on the fadal by putting .03 total tolerance and not create arcs on the arc\filter page

[Thee Rickster ™]

not sure if you understand. The surface pocket path is leaving material at random depths. I'm taking of like 1.5" of material at .035doc. So it's not just the final depth it's almost everyone

Ok, gotcha