Output of invers on Z?

[ahaslam]

I am working on edits to the MPLMaster for a dual spindle dual turret lathe. I finally figured out my machine definition and the NCI looks great. Z moves are negative when they should be negative and that stays true when I switch to the sub spindle. When I post the NC file it looks good on the main spindle but when it hits the sub my Z numbers get flipped. I double checked the NCI and I am sure it is good. I can't find a switch that is setup for the Master pst X8 that gives the invers only when it is hitting the sub. The other thing I thought was odd is that the NCI reads a 1001 for a facing move on the main but then does a 1002 for a facing move on the sub. I thought 1002 was tool change. Does any one know what I am missing here?

[MIL-TFP-41]

Its been a while since I have done it, but I remember having to play around in this section of the MPLMaster to get the output correct...

 

#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
# 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 : 0     #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  : "10010102.000000000"  #Top turret/Left spindle, Cross cut (cuttype = 3)
scase_tl_c3r : "10001102.000000000"  #Top turret/Left spindle, Reverse Cross cut (cuttype = -3)
scase_tl_c4c : "10000222.000000000"  #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  : "10000222.100100100"  #Bottom turret/Left spindle, Turning cut
scase_bl_c2  : "10000222.100100100"  #Bottom turret/Left spindle, Right Face cut
scase_bl_c_2 : "10110222.000000000"  #Bottom turret/Left spindle, Left Face cut
scase_bl_c3  : "10010222.000000000"  #Bottom turret/Left spindle, Cross cut (cuttype = 3)
scase_bl_c3r : "10010222.000000000"  #Bottom turret/Left spindle, Reverse Cross cut (cuttype = -3)
scase_bl_c4c : "10000222.000000000"  #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  : "10111222.000000000"  #Top turret/Right spindle, Turning cut
scase_tr_c2  : "10000012.000000000"  #Top turret/Right spindle, Right Face cut
scase_tr_c_2 : "10110012.000000000"  #Top turret/Right spindle, Left Face cut
scase_tr_c3  : "10010102.000000000"  #Top turret/Right spindle, Cross cut (cuttype = 3)
scase_tr_c3r : "10001102.000000000"  #Top turret/Right spindle, Reverse Cross cut (cuttype = -3)
scase_tr_c4c : "10000222.000000000"  #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  : "10111222.100100100"  #Bottom turret/Right spindle, Turning cut
scase_br_c2  : "10000222.000000000"  #Bottom turret/Right spindle, Right Face cut
scase_br_c_2 : "10110222.100100100"  #Bottom turret/Right spindle, Left Face cut
scase_br_c3  : "10010222.000000000"  #Bottom turret/Right spindle, Cross cut (cuttype = 3)
scase_br_c3r : "10010222.000000000"  #Bottom turret/Right spindle, Reverse Cross cut (cuttype = -3)
scase_br_c4c : "10000222.000000000"  #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

[ahaslam]

Yeah, I saw that section... was hoping to avoid it but I am sure you are right. It's in there... some where.

[Colin Gilchrist]

Take a look at your other Thread, in the Stock Transfer. I explained that you need to first disable the 'use_only_tl' switch, and then you get to play with the 'scase' strings to get the output you want.

 

Start with 'scase_tr_c1', which is Top/Right, Turning cut. Start by setting digit "K" to '1'. Then test the output. That should flip the sign of the Z axis.

 

Keep in mind, the post does not care about your Component settings in the Machine Definition. It only tests the Axis Combination to determine which spindle/turret combo is active. Then, the post uses a separate 'scase' string to control the output for each type of cut. This gives you much finer control over the type of operation, and the "cut type" that is active, and allows you to flip/reverse just about every possible Plane, Cutter Comp, Axis Signed Direction, Spindle Rotation Direction, and C-Axis "Type".

 

It is a little daunting at first, but once you understand how it works, you get full control over the output, depending on the operation being used in Mastercam.

[ahaslam]

I was able to finish it up last minute yesterday. Thanks be to both of you for the help.

[Colin Gilchrist]

  Glad you got it working...