Jump to content

Welcome to eMastercam

Register now to participate in the forums, access the download area, buy Mastercam training materials, post processors and more. This message will be removed once you have signed in.

Use your display name or email address to sign in:

Tool not retracting in between 4th axis moves

Darin

By Darin,
in Industrial Forum

 Share

Recommended Posts

Darin Newbie

Darin

Posted
Posted

I think I have a post issue with retracting using the same tool when moving between 4th axis positioning moves... Here are my setting and you can see in the code it doesn't retract in z when it moves to the A-16.0 move... It crashed... The only way I could post this without crashing was to use home reference point retract incremental only.... But I shouldn't have to use this if retract is set in post right....

 

 

N590 (G54 MILLS KEYSEAT WITH SLOTTING CUTTER)

N600 (COMPENSATION TYPE - OFF)

N610 T2 M06 (1.140 DIA 1/4 WIDE HSS SLOTTING CUTTER)

N620 (MAX - Z4.1)

N630 (MIN - Z-.125)

N640 M08

N650 G00 G17 G90 G54 A0. X-.6875 Y1.4075 S550 M03

N660 G43 H2 Z.1 T1

N670 G01 Z-.125 F100.

N680 Y.6575 F9.5

N690 Y1.4075 F85.

N700 G00 Z4.1 <--------------------- Only posts this z retract if I use home reference point only... This line is gone without it...

N710 (G55 MILLS KEYSEAT AT 16 DEGS WITH SLOTTING CUTTER)

N720 G55 A-16. X-8.7625 Y-1.3874

N730 Z4.

N740 Z.1

N750 G01 Z-.125 F100.

N760 Y-.6374 F9.5

N770 Y-1.3874 F85.

N780 M09

N790 M05

N800 G91 G00 G28 Z0.

N810 G28 Y0. A0.

N820 G90

N830 M30

%

Link to comment
Share on other sites
Darin Newbie

Darin

Posted
  • Author
Posted

I always Program my 4th axis toolpaths with Z0. being center point of rotary....

 

Your cutting at Z-.625

 

That has to be one of your problems.....

 

Make a new WCS with Z0. at the rotation point of the rotary.

 

 

My X0 Y0 Z0 is center of the shaft like pictured... I moved my tool path geometry to center and smae issue... I am using MPMaster Post that I have modified... With MasterCam, X5...

 

N590 (G54 MILLS KEYSEAT WITH SLOTTING CUTTER)

N600 (COMPENSATION TYPE - OFF)

N610 T2 M06 (1.140 DIA 1/4 WIDE HSS SLOTTING CUTTER)

N620 (MAX - Z4.5)

N630 (MIN - Z-.125)

N640 M08

N650 G00 G17 G90 G54 A0. X-.6875 Y1.4075 S550 M03

N660 G43 H2 Z4.5 T1

N670 Z.6

N680 G01 Z-.125 F100.

N690 Y.6575 F9.5

N700 Y1.4075 F85. <-------------------------Crash no Z retract------

N710 (G55 MILLS KEYSEAT AT 16 DEGS WITH SLOTTING CUTTER)

N720 G55 A-16. X-8.7625 Y-1.3874

N730 Z4.5

N740 G00 Z.6

N750 G01 Z-.125 F100.

N760 Y-.6374 F9.5

N770 Y-1.3874 F85.

N780 M09

N790 M05

N800 G91 G00 G28 Z0.

N810 G28 Y0. A0.

N820 G90

N830 M30

%

Link to comment
Share on other sites
Darin Newbie

Darin

Posted
  • Author
Posted

Here is the wired thing... The 3/8 end mill I use before the slitting cutter retracts perfect with the same settings and the slitting cutter... I tried unchecking rapid retract on the tool but it only feeds to the feed plane only not retract height.... So it must be me post or the way it see the slotting cutter..

 

 

 

220 G00 G17 G20 G40 G80 G90

N230 G91 G28 Z0.

N240 (G54 MILLS 15/32 CUTOUT WITH 3/8 ENDMILL)

N250 (COMPENSATION TYPE - WEAR COMP)

N260 T1 M06 (3/8 CARBIDE 5 FLUTE E.M.)

N270 (MAX - Z4.5)

N280 (MIN - Z-.5)

N290 M08

N300 G00 G17 G90 G54 A0. X-.7225 Y1.0265 S3000 M03

N310 G43 H1 Z4.5 T2

N320 Z.6

N330 G01 Z-.5 F100.

N340 G41 D1 Y.6515 F20.

N350 G03 X-.6525 I.035 J0.

N360 G01 G40 Y1.0265

N370 X-.7325

N380 G41 D1 Y.6515

N390 G03 X-.6425 I.045 J0.

N400 G01 G40 Y1.0265

N410 G00 Z4.5 <--------------------------- 3/8 endmill rapids fine on retract..........

N420 (G55 MILLS 15/32 CUTOUT AT 16 DEGS WITH 3/8 ENDMILL)

N430 G55 A-16. X-8.6465 Y-1.0119

N440 Z4.5

N450 Z.6

N460 G01 Z-.5 F100.

N470 G41 D1 X-8.7264 Y-.6455 F20.

N480 G03 X-8.7986 I-.036 J-.0079

N490 G01 G40 X-8.8785 Y-1.0119

N500 X-8.6367 Y-1.0098

N510 G41 D1 X-8.7167 Y-.6434

N520 G03 X-8.8083 I-.0458 J-.01

N530 G01 G40 X-8.8883 Y-1.0098

N540 G00 Z4.5

N550 M09

N560 M05

N570 G91 G28 Z0.

N580 M01

N590 (G54 MILLS KEYSEAT WITH SLOTTING CUTTER)

N600 (COMPENSATION TYPE - OFF)

N610 T2 M06 (1.140 DIA 1/4 WIDE HSS SLOTTING CUTTER)

N620 (MAX - Z4.5)

N630 (MIN - Z-.125)

N640 M08

N650 G00 G17 G90 G54 A0. X-.6875 Y1.4075 S550 M03

N660 G43 H2 Z4. T1

N670 Z.1

N680 G01 Z-.125 F100.

N690 Y.6575 F9.5

N700 Y1.4075 F85.

N710 Z.1 F100. <-------------------- won't post anything with rapid retract check and only post feed plane with rapid retract unchecked still a crash....

N720 (G55 MILLS KEYSEAT AT 16 DEGS WITH SLOTTING CUTTER)

N730 G55 A-16. X-8.7625 Y-1.3874

N740 Z4.5

N750 G00 Z.6

N760 G01 Z-.125

N770 Y-.6374 F9.5

N780 Y-1.3874 F85.

N790 Z-.025 F100.

N800 M09

N810 M05

N820 G91 G00 G28 Z0.

N830 G28 Y0. A0.

N840 G90

N850 M30

Link to comment
Share on other sites
Darin Newbie

Darin

Posted
  • Author
Posted

Why aren't you using clearance???

Absolute clearance above your stock will cure the crash problem....

 

 

Tried that many times same crash......... Like I said the 3/8 end mill is fine with or without clearance... But the slotting cutter is not.... Mastercam or post issue...

 

This is with clearance

 

 

N220 G00 G17 G20 G40 G80 G90

N230 G91 G28 Z0.

N240 (G54 MILLS 15/32 CUTOUT WITH 3/8 ENDMILL)

N250 (COMPENSATION TYPE - WEAR COMP)

N260 T1 M06 (3/8 CARBIDE 5 FLUTE E.M.)

N270 (MAX - Z4.)

N280 (MIN - Z-.5)

N290 M08

N300 G00 G17 G90 G54 A0. X-.7225 Y1.0265 S3000 M03

N310 G43 H1 Z4. T2

N320 Z.1

N330 G01 Z-.5 F100.

N340 G41 D1 Y.6515 F20.

N350 G03 X-.6525 I.035 J0.

N360 G01 G40 Y1.0265

N370 X-.7325

N380 G41 D1 Y.6515

N390 G03 X-.6425 I.045 J0.

N400 G01 G40 Y1.0265

N410 G00 Z4.

N420 (G55 MILLS 15/32 CUTOUT AT 16 DEGS WITH 3/8 ENDMILL)

N430 G55 A-16. X-8.6465 Y-1.0119

N440 Z4.

N450 Z.1

N460 G01 Z-.5 F100.

N470 G41 D1 X-8.7264 Y-.6455 F20.

N480 G03 X-8.7986 I-.036 J-.0079

N490 G01 G40 X-8.8785 Y-1.0119

N500 X-8.6367 Y-1.0098

N510 G41 D1 X-8.7167 Y-.6434

N520 G03 X-8.8083 I-.0458 J-.01

N530 G01 G40 X-8.8883 Y-1.0098

N540 G00 Z4.

N550 M09

N560 M05

N570 G91 G28 Z0.

N580 M01

N590 (G54 MILLS KEYSEAT WITH SLOTTING CUTTER)

N600 (COMPENSATION TYPE - OFF)

N610 T2 M06 (1.140 DIA 1/4 WIDE HSS SLOTTING CUTTER)

N620 (MAX - Z4.)

N630 (MIN - Z-.125)

N640 M08

N650 G00 G17 G90 G54 A0. X-.6875 Y1.4075 S550 M03

N660 G43 H2 Z4. T1

N670 Z.1

N680 G01 Z-.125 F100.

N690 Y.6575 F9.5

N700 Y1.4075 F85.

N710 (G55 MILLS KEYSEAT AT 16 DEGS WITH SLOTTING CUTTER)

N720 G55 A-16. X-8.7625 Y-1.3874

N730 Z4.

N740 G00 Z.1

N750 G01 Z-.125 F100.

N760 Y-.6374 F9.5

N770 Y-1.3874 F85.

N780 M09

N790 M05

N800 G91 G00 G28 Z0.

N810 G28 Y0. A0.

N820 G90

N830 M30

Link to comment
Share on other sites
Chris Rizzo Newbie

Chris Rizzo

Posted
Posted

Hi Darin,

 

So z0. is the center of rotation, and your key cutter is going z-.5?

 

If you would like the key cutter to rapid to depth, make it's cutting pass, rapid up to a safe clear distance, rotate A axis:

 

Clearance Z4. ABSOLUTE (only at start and end)

Retract Z-.5 Absolute

Feed plane Z-.5 Absolute

Top of Stock Z-.5 Absolute

Depth Z-.5 Absolute

 

Use your lead in/out to make sure you don't crash into part. You can use that for multi-passes as well with keep tool down, again just check the leads.

 

hth

Link to comment
Share on other sites
Darin Newbie

Darin

Posted
  • Author
Posted

Hi Darin,

 

So z0. is the center of rotation, and your key cutter is going z-.5?

 

If you would like the key cutter to rapid to depth, make it's cutting pass, rapid up to a safe clear distance, rotate A axis:

 

Clearance Z4. ABSOLUTE (only at start and end)

Retract Z-.5 Absolute

Feed plane Z-.5 Absolute

Top of Stock Z-.5 Absolute

Depth Z-.5 Absolute

 

Use your lead in/out to make sure you don't crash into part. You can use that for multi-passes as well with keep tool down, again just check the leads.

 

hth

 

Hello Chris,

 

Thanks for the info.... So what would you recommend or is the rule of thumb for putting the Z location of chained geometry at on 4th axis parts... Top of part or Z0 in the center where the 4th axis rotation is?

 

Darin

Link to comment
Share on other sites
john316 Apprentice

john316

Posted
Posted

Hello Chris,

 

Thanks for the info.... So what would you recommend or is the rule of thumb for putting the Z location of chained geometry at on 4th axis parts... Top of part or Z0 in the center where the 4th axis rotation is?

 

Darin

 

I would keep the chained geometry where it is so you have the correct z height in your code. If you move it to the center of rotation you'll have to put the correct z value as absolute in your toolpath. I've learned to put the geometry where it belongs and use an incremental 0 in my toolpath so if I have to move it to another machine or change it for some reason I don't have to go through all the toolpaths and input the new numbers.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

Join us!

eMastercam - your online source for all things Mastercam.

Together, we are the strongest Mastercam community on the web with over 56,000 members, and our online store offers a wide selection of training materials for all applications and skill levels.

Useful Links

Contact Info

Subscribe to eMastercam News

 

Legal

Privacy Policy

Store Terms & Conditions

Forum Guidelines

Follow us

×
×
  • Create New...