5238-E P-218
SECTION 8 LATHE AUTO-PROGRAMMING FUNCTION (LAP)
(3) Finish contour definition start G code
• This code declares the start of finish contour definition.
• The blocks following the G81 or G82 block and followed by the G80 block define the finish
contour.
• G81 code: Longitudinal contour
G82 code: Transverse contour
(4) Finish contour definition blocks
• Define the finish contour using the G00, G01, G02, and G03 codes.
• The tool retraction path after the completion of machining varies depending on whether the
first block contains the G00 or G01 code.
• The G00 code can be used only in the first block.
• F: Feedrate in finishing
S: Spindle speed in finishing
• E: Feedrate along contour in the high-speed bar turning cycle
• F, S, and E commands are all modal.
(5) Contour definition end G code (G80)
This code declares the end of contour definition.
(6) Call for rough turning cycle
• The rough turning cycle is started by calling the contour definition blocks starting with G86.
• When the contour definition blocks start with G83, AP Mode V (bar turning cycle) is
selected. (LAP4 only)
• When the finish contour definition blocks start with G81 or G82, the AP Mode II (copy
turning cycle) is selected.
(7) Call for finish turning cycle
• The finish turning cycle is carried out by designating G87 and calling for the finish contour
definition blocks starting with G81 or G82.
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