best way to remove material when cutting large pocket ?

[mig]

  Hello ,

 What is the best way to remove material when cutting large pocket ?

 pocket size : 37 x 14 x 2.5 inch

 material  : p20 steel

 what  toolpath  type would you prefer?

[hlibhlib]

 Try a plunger

[Quickmike]

I think a higheed indexable might do good too. However, if it is on a vertical chip evacuation will have to be looked at. On a horizontal would be better. What size radius in the corners and radius between the walls and floor?

[Reko]

HS Area Mill will do a good job with that. I tend to use Area Mill for pocketing... and Dynamic for Core, or outside shapes... but not exclusively, so use your best judgement.

 

Use the biggest cutter you have that your machine can handle... then use HS Area Mill again with the Rest Rough feature... and a smaller EM to mill the leftover inside rads.

 

I usually drop by halves... so if you start with a 2" face mill... after that, go to a rest rough with a 1"... then rest rough again with 1/2" EM and so on until the smallest rads are taken care of.

[jlw™]

pretty much ditto reko, he just beat me to it.

[crazy^millman]

  Hello ,

 What is the best way to remove material when cutting large pocket ?

 pocket size : 37 x 14 x 2.5 inch

 material  : p20 steel

 what  toolpath  type would you prefer?

 

Floored pocket or open pocket? I open cut out the rem and use it for other parts. If closed floor then what was mentioned is a good way to go about it.

[Matthew Hajicek - Singularity]

What machine you have will make a big difference too.  30000 RPM 30 taper or 6000 RPM 50 taper?  Horizontal or vertical?

[mig]

Hello everybody

  my machine  is vmc  Genos  560 . Strong enough .

  So far my strategy is   HS area mill  by 2 inch dia   sendvik button cutter  ,0.5 dia inserts  1030 grade .

   Problem is  code became  way long . Why in this situation mastercam divide straight  linear movement on bunch small linear blocks ? 

 Is it possible to fix it ? Some filter setting ?

[Reko]

Here are my fiter settings... might help... I usually run 30-70 because it is a nice mix of program length and shorter calculation time. If the goal is less code tho, try 5-95... should shorten your program by about 20%... but then the calculation time increases quite a lot.

 

These new toolpaths just put out a lot of code, not very much you can do about that.

 

[gms1]

Hello everybody

  my machine  is vmc  Genos  560 . Strong enough .

  So far my strategy is   HS area mill  by 2 inch dia   sendvik button cutter  ,0.5 dia inserts  1030 grade .

   Problem is  code became  way long . Why in this situation mastercam divide straight  linear movement on bunch small linear blocks ? 

 Is it possible to fix it ? Some filter setting ?

Its intentionally designed to function this way to keep the angle of engagement consistent through the whole cut. If you want less code you will have to legacy pocket it for less code.

[jlw™]

For roughing I set total tolerance to 0.002in and then 50/50.

[mig]

My filter setting is 0.006  and   50/50  now

[jlw™]

check control def and make sure arc are enabled.  the only i get that is not arc is perfect x or y moves and my ramp in/out.

[jlw™]

i guess i should have asked, are you getting any arcs now?  can you share a file?

[Goldorak]

If it's a simple rectangular pocket without any 3d shape, a simple 2d pocket toolpath set to hi speed method will do approximately the same toolpath as HS area mill but with a much smaller G-code output

[jlw™]

In that situation the lead in/out is what is going to be the main difference.  The pocket path will not have the "curl up" and "curl down" lead in and out.  Pocket is going to helix or bury.  Can you post a file?  HS Area is one of my goto's.

 

If you are linearizing I've seen an 8mb post go to 31kb by filtering.  With out a file or more info I can't help.

[g huns]

 

  So far my strategy is   HS area mill  by 2 inch dia   sendvik button cutter  ,0.5 dia inserts  1030 grade .

 

We cut a lot of stuff like that in P20 and HH P20. We have several 2" insert cutters from different manufactures. Just did a demo with the Seco high feed 6 in 2". It smoked everything else we have. Both in speed and insert life.

[Goldorak]

We cut a lot of stuff like that in P20 and HH P20. We have several 2" insert cutters from different manufactures. Just did a demo with the Seco high feed 6 in 2". It smoked everything else we have. Both in speed and insert life.

 

the Seco rep came here yesterday with this new cutter , i can't wait to try it , the insert is way beefier than our mitsubishi ADX and tungalloy feed mills 

[mig]

We cut a lot of stuff like that in P20 and HH P20. We have several 2" insert cutters from different manufactures. Just did a demo with the Seco high feed 6 in 2". It smoked everything else we have. Both in speed and insert life.

You  mean  2 inch dia  6 inserts  ?

[Goldorak]

6 corners by insert

[hlibhlib]

 Try a plunger

[balnh]

Checking One way filtering makes smaller code for me.

[kool]

on big round and deep pockets I use multiple ramping contour a lot. I drill a big hole in center and ramp all the way down with thru coolant insert tools.