5238-E P-202
SECTION 8 LATHE AUTO-PROGRAMMING FUNCTION (LAP)
The entries in programs A and B are described in 1) through 7) below.
(1) Blank material shape definition start G code (G83)
• This code declares the start of blank workpiece shape definition.
• The blocks following the G83 block and followed by the G81 or G82 block define the blank
workpiece.
(2) Blank material shape definition block
• Define the blank workpiece shape using the G01, G02, and G03 codes.
• Note that the G00 code cannot be used.
• An alarm occurs if the G02 or G03 code is specified in the first block that follows the G83
block.
(3) Finish contour definition start G code
• This code declares the start of the 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, E, and S commands are all modal.
(5) Contour definition end G code
This code declares the end of contour definition.
(6) Calls for rough turning cycle
• The rough turning cycle is started by calling the contour definition blocks starting with G85.
• When the contour definition blocks start with G83, the AP Mode IV (high-speed bar turning
cycle) is selected. (LAP4 only)
• When the finish contour definition blocks start with G81 or G82, the AP Mode I (bar turning
cycle) is selected.
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