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Okuma G2 and G3

MadAga

By MadAga,
in Industrial Forum

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AHarrison1 Rising Star

AHarrison1

Posted
Posted
17 minutes ago, MadAga said:

Hello, 

I will apologize because English is not my first language. 

 

The problem I have is with Okuma vtr 350a

 Movement of the machine is:

G2 - counterclockwise 

G3 - clockwise 

 

Anybody nows what is the problem. 

 

These should be the other way round

G2 Clockwise

G3 Counter

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AHarrison1 Rising Star

AHarrison1

Posted
Posted
3 hours ago, MadAga said:

Nope.

I do simulation on the machine and use the program. 

But still is G2 counterclockwise and G3 clockwise.  

 

I suggest 1 of the following options:

Contact your re-seller for help.

Share your Mastercam file and sample code here so others can see.

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crazy^millman Veteran

crazy^millman

Posted
Posted
2 hours ago, MadAga said:

I did call reseller, he says should work.

(I did not call again because I think it is my fault)

123_220201_070821.pdf

They are wrong in this case if you did call them sorry to doubt you, but many illegal users of Mastercam come to this forum and have the same exact story. I will give the benefit of the doubt and say this. They need to change the Mapping for the G2-G3 output in the Matrix setup for the machine. Normally C-D-E are the culprits in a situation like yours. 

# --------------------------------------------------------------------------
#Machining position turret/spindle settings
# Switch strings based on turret position top/bottom-left/right and cut type.
# Turret position is based on the Mastercam settings (see lathtype).
# Strings are re-assigned for output in the routine psw_str_mult.
# The string variable sw_string holds the place position value to determine
# how to assign the strings.  Planes are relative to the view from Mastercam.
# Assign the 17 digit string following the alpha columns below:
# A - C axis, 1 = axis winds, 2 = axis signed, 3 = indexer, 4 = shortest direction
# B - Spindle direction, 0 = normal, 1 = reverse
# C - Plane 0 arc/comp, 0 = normal, 1 = switch
# D - Plane 1 arc/comp, 0 = normal, 1 = switch
# E - Plane 2 arc/comp, 0 = normal, 1 = switch
# F - Plane 0, 0 = G17, 1 = G19, 2 = G18
# G - Plane 1, 0 = G17, 1 = G19, 2 = G18
# H - Plane 2, 0 = G17, 1 = G19, 2 = G18
# Decimal (required)
# I - Plane 0, X axis, 0 = normal, 1 = switch sign from basic
# J - Plane 0, Y axis, 0 = normal, 1 = switch sign from basic
# K - Plane 0, Z axis, 0 = normal, 1 = switch sign from basic
# L - Plane 1, X axis, 0 = normal, 1 = switch sign from basic
# M - Plane 1, Y axis, 0 = normal, 1 = switch sign from basic
# N - Plane 1, Z axis, 0 = normal, 1 = switch sign from basic
# O - Plane 2, X axis, 0 = normal, 1 = switch sign from basic
# P - Plane 2, Y axis, 0 = normal, 1 = switch sign from basic
# Q - Plane 2, Z axis, 0 = normal, 1 = switch sign from basic
use_only_tl  : 1     #Use only Top turret/Left spindle settings (below) for
                     #all Mastercam turret/spindle selections
                     #When configuring for multi-spindle/turret set to 0

#Columns-       ABCDEFGH.IJKLMNOPQ #Turret/Spindle            #Path Type
scase_tl_c1  : "10000222.000000000"  #Top turret/Left spindle, Turning cut
scase_tl_c2  : "10000012.000000000"  #Top turret/Left spindle, Right Face cut
scase_tl_c_2 : "10110012.000000000"  #Top turret/Left spindle, Left Face cut
scase_tl_c3  : "40010102.000000000"  #Top turret/Left spindle, Cross cut
scase_tl_c4c : "10000111.000000000"  #Top turret/Left spindle, Y axis subs. Cycle
scase_tl_c4  : "10000222.000000000"  #Top turret/Left spindle, Y axis subs.
scase_tl_c5  : "10000222.000000000"  #Top turret/Left spindle, Multisurf Rotary

#Columns-       ABCDEFGH.IJKLMNOPQ
scase_bl_c1  : "10000222.000000000"  #Bottom turret/Left spindle, Turning cut
scase_bl_c2  : "11000012.000000000"  #Bottom turret/Left spindle, Right Face cut
scase_bl_c_2 : "11110012.000000000"  #Bottom turret/Left spindle, Left Face cut
scase_bl_c3  : "10010102.000000000"  #Bottom turret/Left spindle, Cross cut
scase_bl_c4c : "10000111.000000000"  #Bottom turret/Left spindle, Y axis subs. Cycle
scase_bl_c4  : "10000222.000000000"  #Bottom turret/Left spindle, Y axis subs.
scase_bl_c5  : "10000222.000000000"  #Bottom turret/Left spindle, Multisurf Rotary

#Columns-       ABCDEFGH.IJKLMNOPQ
scase_tr_c1  : "10000222.000000000"  #Top turret/Right spindle, Turning cut
scase_tr_c2  : "11000012.000000000"  #Top turret/Right spindle, Right Face cut
scase_tr_c_2 : "11110012.000000000"  #Top turret/Right spindle, Left Face cut
scase_tr_c3  : "10010102.000000000"  #Top turret/Right spindle, Cross cut
scase_tr_c4c : "10000111.000000000"  #Top turret/Right spindle, Y axis subs. Cycle
scase_tr_c4  : "10000222.000000000"  #Top turret/Right spindle, Y axis subs.
scase_tr_c5  : "10000222.000000000"  #Top turret/Right spindle, Multisurf Rotary

#Columns-       ABCDEFGH.IJKLMNOPQ
scase_br_c1  : "10000222.000000000"  #Bottom turret/Right spindle, Turning cut
scase_br_c2  : "11000012.000000000"  #Bottom turret/Right spindle, Right Face cut
scase_br_c_2 : "11110012.000000000"  #Bottom turret/Right spindle, Right Face cut
scase_br_c3  : "10010102.000000000"  #Bottom turret/Right spindle, Cross cut
scase_br_c4c : "10000111.000000000"  #Bottom turret/Right spindle, Y axis subs. Cycle
scase_br_c4  : "10000222.000000000"  #Bottom turret/Right spindle, Y axis subs.
scase_br_c5  : "10000222.000000000"  #Bottom turret/Right spindle, Multisurf Rotary

 

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crazy^millman Veteran

crazy^millman

Posted
Posted
2 hours ago, MadAga said:

I use original mastercam, trust me. 

The machine that I am talking about is VTR 350a, not the usual lathe machine. So that can be a problem?

I don't want to mess with machine parameters, it can be very dangerous. 

 

Regards 

Then make a sample file and do a zig2go and add the post. Share it and left someone help you.

#1 it gives anyone your legitimate sim number so we can see your a legal user.

#2 we can see exactly what you are seeing and make adjustments to the sample file to correct the issue and then post back up a fix. I have been on this forum since 2003 others since 2000 and this is what we do to help Manufacturing. Machine is a machine and math doesn't lie!!!! I have programmed well over 400 different types of machines and worked with many different people over the years. Trust me there is not a CNC machine on the planet Mastercam cannot program.

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crazy^millman Veteran

crazy^millman

Posted
Posted
43 minutes ago, MadAga said:

@AHarrison1 I do use plane +x -z and that is only the one that works.

@crazy^millman must ask, if they let me I will share file.

(Alreday have such file on PC but have to have permission to do it)

Otherwise I will not be needing mastercam or the g codes :)

My Email is in my signature. You can send me an NDA and I will be glad to help get this resolved.

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  • 2 months later...
cam-eleon Newbie

cam-eleon

Posted
Posted

I've programmed VTL's way back in the day. I would just program the part like a conventional cnc horizontal lathe, in the upper quad, like normal.  In actuality the control flips/mirrors the normal cnc lathe program over to the operators side of the part on the VTL. It won't change the std G03/G02 direction. This was way my machine was set up. So I would have to imagine the tool running on the other side of the vertical centerline to do any at the machine edits. It was a bit confusing. 

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crazy^millman Veteran

crazy^millman

Posted
Posted

Okay I have now run into this 4 times in the last few months. Per ISO thinking the machine is setup with a right Turret so Mastercam is setup with a Right Turret also. Problem is even though the values are X Positive and looking at the machine we all would think G2 and G3 would be from our perspective they are not. They are really from the back of the machine exactly like Cam-eleon is mentioning. The post builders have built them thinking Front is facing the machine when in all reality it is just like a Horizontal Lathe process where on the Machine control they have just spun it from a left turret to a right turret setup. Since X and Z are collinear it doesn't matter for X and Z output it will be correct the problem becomes exactly what we are seeing. We build our 3D tools in Mastercam that does support VTL and we get a completely different process than using the old school Lathe tool process. I just reported this problem in the official forum. IT doesn't change the output of the code it just confuses anyone learning Mastercam and programming a VTL as to what is the correct way to setup your tool. You not wrong and need to send this exact file to your dealer and demand they provide you with a modification to the post to support Right Turret Axis Combination with the G2 and G3 flipped because that is the way your machine is working going about it this way. If you start down the process many of us have used for years programming like a Traditional Horizontal Lathe then you will need to use a Back View when programming and a Left Turret Axis Combination.

The builders have built their machines this way because for so many years people have programmed VTL machines just like this and to come along and offer a machine that do it differently would rock the boat. They have made the machines to support how people would program a Horizontal and now you have to get your dealer to correct the post to what your machine is built like so you can post code like you need and be done with this issue.

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MadAga Newbie

MadAga

Posted
  • Author
Posted

Thank you for the answer. 

 

The problem is that worked on mill with Heidenhain system, and I got this machine to do the job and learn myself in the process. 

I will call reseller and send me same file and try to explain :) 

I do have VTL planes in mastercam.  

I will post here as soon as I solve the problem. 

 

Have nice day all!

 

 

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