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powermill surface milling vs creo surface milling

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powermill surface milling vs creo surface milling



see these videos both videos shown surface machining on same surface one is from power mill other is from creo parametric...in creo machining there is some motion pause during one patch to other patch of surface ..but in power mill no pause continue machining ..why this is happening...is it software capabilities issue or i am some thing missing..please advise..

 

fisa

15 REPLIES 15
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Re: powermill surface milling vs creo surface milling

Have you looked at the length of programs? Is powermill putting out IJK where creo is putting out point to point so its loading up your machine control speed?

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Re: powermill surface milling vs creo surface milling

i check it there is no IJK value in power mill gcode please check attach file ..you can run this file on cimco edit.

 

regards

 

asif

 

 

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Re: powermill surface milling vs creo surface milling

please check attachment for compare both g codes

 

 

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Re: powermill surface milling vs creo surface milling

Hi

please please check post form powermill if z=-10 total lengh =32.200 lines, in Creo NC z=-10 total lengh =2.940 lines that meaning post in PowerMill tolerance more 10 time compare with Creo NC.

Your problem is using default post in Creo, you should edit post processor in Creo more tolerance

compare post powermill.JPG

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Re: powermill surface milling vs creo surface milling

 
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Re: powermill surface milling vs creo surface milling

Disregard that responds, I looked at the line numbers wrong.

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Re: powermill surface milling vs creo surface milling

i already increase the tolerance but no change also insert this command for look ahead option enabled but no change ...some one say me that change your software ...power mill more advance  software compare to creo ..but my heart is not accepting this .

 

 

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Re: powermill surface milling vs creo surface milling

Sad to say they might be correct.  We use power mill for our robots and Creo for our CNC machines and we are transitioning into more of the 3D tool modeling and true 5 axis milling in creo. Sadly on the daily I am becoming less and less impressed with creo.

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Re: powermill surface milling vs creo surface milling

Dear 

Take a look for technical side: Post processor is important please work with who sold Creo for you to got support.

Do you check to compare why? you are sure same as bellow

- NC code same: example in Creo have N1000 X-041.644 Y012.064 Z-005.886 maybe machine run different with non N...

- With kind of tool path using in Power Mill? then Creo using toolpath same with kind this tool path

- Make NC same surface, step depth, step over...

- change any thing same NC code, much be have some differnce

Ask? why x,y,x,F same... but machine run not same? 

If to clear that work with who support then test above you will got ideas

I dont have your code, your machine CNC I cant filling and support

Tks

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Re: powermill surface milling vs creo surface milling

Dear

I had fond a Problem that many small arc G3 in Creo NC code that why machine pause at that position

In Powermill NC code only G1 dont have G3

***for some case 3D ARC dont export nc code G2 G3 set in Creo only G1 or you make post processor G01 only

Open you  Creo NC , Powermill nc code in Cimco edit you will see

For Technical you must to check it, can not said that software... 

Problem nc code mall G3.JPG

 

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Re: powermill surface milling vs creo surface milling

ok bro i send you my mfg file and pp from which i generate code..may be this can you help understand better.because i do all the thing where all of you point me.i am still sure that creo have all the nc capabilities like other high end and cost software

 

 

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Re: powermill surface milling vs creo surface milling

Hi

If your are PTC's customer please contact PTC support

I dont have your machine I cant take time for this case.I can do for you but it will take a long discussing

I see you model copy surface from other part maybe model tolerance, Can you design other part with same revolve then using cutline with points.

Alot customer using Creo NC but no comment about this.

TKS

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Re: powermill surface milling vs creo surface milling

I took a quick look and just a few things to consider:

  1. Your tolerance in the toolpath is .0001 while your model accuracy is approximately .0018. You never really want tolerance in a sequence tighter than accuracy on the model.
  2. I wonder if your post processor is setup to handle the parameter HELICAL_CIRC_INTERPOLATION a different way than the post that is handling powermill.  Yours is set to HELICAL_CIRC_INTERPOLATION = POINTS_ONLY so it is spitting out tons of GOTO moves, will your post handle ARC moves?
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Re: powermill surface milling vs creo surface milling

you means that sequence accuracy must be same as model accuracy ??

 

which option you suggest for HELICAL_CIRC_INTERPOLATION??

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Re: powermill surface milling vs creo surface milling

Can you give more specifics on toolpath you created?  Is it Cutline Milling or Surface Milling and if so, which of the 3 options within Surface Milling? My initial thought is this has more to do with the post processor/controller unless you can see something strange when simulating the CL output within Creo even before you post process.

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