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Lathe C-axis is on the wrong side


Luke.Hicks430
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We have a Fanuc x-z axis lathe with live tooling. When we make c-axis contour programs we post it out using the generic c-axis slant bed post.

 

The problem we are having is that the lathe wants to cut it to the opposite side. Instead of engaging the material at +x it engages at -x.

This isn't too much of a hassle for face contouring, we have to cutter comp the whole diameter of the tool we are using though.

The main problem is that when we do cross holes the tool rapids to the start position as -x therefore it would rapid through the part and start cutting through the bottom of the part into air.

 

I don't know if this is a Mastercam setting, a post setting, or a setting on our lathes but I know this isn't right.

 

I have attached a crude picture of what it is doing.

 

Any ideas and/or suggestions to fix this is greatly appreciated

post-60866-0-65997400-1438109215_thumb.png

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Has the post even been configured for your machine? You say generic, but does anyone know where to adjust things for this type of machine in the post? Here is the area I normally have to tweak for certain machines that act weird.

# --------------------------------------------------------------------------------------
#Lathe canned turning settings:
#
# Set each digit of slcc_options to 0 or 1 to activate the proper canned cycle format
# based on where your machine expects the cutter comp codes for Lead in/out moves.
#
# The default value of slcc_options ("0010000100") will output the Cutter Comp codes
# inside the canned cycle. This maintains compatibility with Pre-X5 posts.
#
# To output the Cutter Comp codes outside the macro, un-pound the line for the second
# slcc_options, and comment out the first option.
# --------------------------------------------------------------------------------------
lcc_mov_mult : 2.    #Enter the move radius multiplier in X, Z for lathe canned cycle comp.

# A - Pattern, Rough, Comp lead addition, dependent on B
# B - Pattern, Rough, Comp before/after cycle
# C - Pattern, Rough, Comp in profile
#
# D - Pattern, Finish, Comp lead addition, dependent on E
# E - Pattern, Finish, Comp before/after profile
#
# F - Face/Turn, Rough, Comp lead addition, dependent on G
# G - Face/Turn, Rough, Comp before/after cycle
# H - Face/Turn, Rough, Comp in profile
#
# I - Face/Turn, Finish, Comp lead addition, dependent on J
# J - Face/Turn, Finish, Comp before/after profile

#Columns-       ABCDEFGHIJ    #Comp Output
slcc_options : "0010000100"   #Pattern & Face/Turn inside Canned Profile
#slcc_options : "1101111011"  #Pattern & Face/Turn outside Canned Profile

# --------------------------------------------------------------------------
#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

HTH

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