lefthand tapping

[mstegemann]

Does any one know how to lefthand tap with a live tool using M329 tapping cycle, on a Mori Seiki SL400 with MSC501 18I controller? It will work with a right hand tap but can't get the spindle to turn in reverse for a lefthand tap.

[cpayne2k10]

you should be able to change the spindle direction M-Code you just switch M13 to M14 you might be able to do it in the tool file as well

[DIFF OVER]

Here is what i do:

G84.1

N6M1(10-32 LH)
G50S3000G40M45
G0G54T0909
G97S300
M13
M5
G0X0Z.050
M329S300
G84.1Z-.500F.03125
G0G80Z.050M9
G0X6.Z6.

[mstegemann]

Thank you for both of the suggestions, Unfortunately they did not work, our machine (SL400 lathe) does not support the G84.1, just G84.The program manual says to set the live tool as an O.D. cutting tool in the rotary tool file instead of a live face tool and this will reverse the spindle, but we cannot get the live tool arm to ingage with it set as a O.D. tool.

[cpayne2k10]

you could try changing the spindle direction in the setup page its in the same page as your jaw cut i forget how to get to it but if you reverse it that might help you