c axis g-code output

[tanany2050]

hi, there

can anybody help me controlling the limit of c axis output not to exceed 360 degrees

 

a c-axis face contour toolpath outputs the following code in MastercamX3

 

N2320 X53.672 C360.

N2330 X53.669 C360.224

N2340 X53.659 C360.447

N2350 X53.643 C360.67

N2360 X53.62 C360.892

N2370 X53.591 C361.114

 

I don't want the C output to exceed 360 degrees

where can I do that in the MPLFAN.PST post or at any place

 

the attachment contains the toolpath

 

thanks

[Mr. Wizzard]

I don't see your attachment. Is this for a lathe with a full C-axis?

[tanany2050]

yes, a lathe with a full C-axis

 

C axis turns more than 360 degrees

[Mr. Wizzard]

Well, this may get into the confusing realm of Machine Definition, Control Definition, post processor, or a combination of them. Check in your MD first and see if changing your settings here will help. This is for a 4th axis on a 3-axis vertical mill, but you could have something similar for your C-axis component of your lathe.

 

See if changing here gives you the output you want. I could be completely wrong, but it's worth a shot.

[tanany2050]

changing the setting in the MD doesn't make a difference with the same MPLFAN.PST

 

Many thanks

[spade117]

Not exactly sure if it works the same in lathe posts as it does with mill, but in the post, look for:

 

one_rev     : 1     #Limit rotary indexing between 0 and 360? (0 = No, 1 = Yes)

[tanany2050]

finally worked

 

I found it in an old version 9 post

 

1- add this sub to the post

 

p360_max_index #------- control the c axis output not to exceed 360 degrees

[

while cabs > 360, cabs = cabs - 360

while cabs < zero, cabs = cabs + 360

while cabs = 360, cabs = 0

cabs = abs(cabs)

]

 

2- and call it within pfcout and pcout

 

 

pfcout #Force C axis output

 

p360_max_index

.

.

.

 

 

pcout #C axis output

 

p360_max_index

.

.

.

 

thanks for you all

[Mr. Wizzard]

nice job, glad ya got it working

[Paul Decelles]

Changing the output does not require post edits such as you have implemented.

This is what the 'scase' initializations are for (among other things):

 

#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  : "11000012.000000000"  #Top turret/Left spindle, Right Face cut
scase_tl_c_2 : "11110012.000000000"  #Top turret/Left spindle, Left Face cut
scase_tl_c3  : "10010102.000000000"  #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

 

Change the first value in the string (column "A") as needed to determine C output.

If 'use_only_tl' is set to 1 as above, just change the bolded values here:

 

#Columns- ABCDEFGH.IJKLMNOPQ #Turret/Spindle #Path Type

scase_tl_c1 : "10000222.000000000" #Top turret/Left spindle, Turning cut

scase_tl_c2 : "11000012.000000000" #Top turret/Left spindle, Right Face cut

scase_tl_c_2 : "11110012.000000000" #Top turret/Left spindle, Left Face cut

scase_tl_c3 : "10010102.000000000" #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

 

using these settings to match the desired output:

# A - C axis, 1 = axis winds, 2 = axis signed, 3 = indexer, 4 = shortest direction

[tanany2050]

I appreciate all your efforts

thanks

 

but changing the bolded 1's doesn't make a difference with MPLFAN.PST output