G76 Threading Cycle, Multiple Pass (Group 00)
D - First pass cutting depth
F(E) - Feed rate, the lead of the thread
*I - Thread taper amount, radius measure
K - Thread height, defines thread depth, radius measure
*P - Single Edge Cutting (load constant)
*Q - Thread Start Angle (Do not use a decimal point)
*U - X-axis incremental distance, start to maximum thread Depth Diameter
*W - Z-axis incremental distance, start to maximum thread length
*X - X-axis absolute location, maximum thread Depth Diameter
*Z - Z-axis absolute location, maximum thread length
* indicates optional
G76 Threading Cycle, Multiple Pass: [1] Z depth, [2] Minor diameter, [3] Major diameter.

Setting 95/Setting 96 determine chamfer size/angle;
G76 Threading Cycle, Multiple Pass Tapered: [1] Rapid, [2] Feed, [3] Programmed path, [4] Cut allowance, [5] Start position, [6] Finished diameter, [7] Target, [A] Angle.

The
The height of the thread is defined as the distance from the crest of the thread to the root of the thread. The calculated depth of thread (
The thread taper amount is specified in
The depth of the first cut through the thread is specified in
The tool nose angle for the thread is specified in
The
At the end of the thread an optional chamfer is performed. The size and angle of the chamfer is controlled with Setting 95 (Thread Chamfer Size) and Setting 96 (Thread Chamfer Angle). The chamfer size is designated in number of threads, so that if 1.000 is recorded in Setting 95 and the feed rate is .05, then the chamfer will be .05. A chamfer can improve the appearance and functionality of threads that must be machined up to a shoulder. If relief is provided for at the end of the thread then the chamfer can be eliminated by specifying 0.000 for the chamfer size in Setting 95, or using
G76 Using an A Value: [1] Setting 95 and 96 (see Note), [2] Setting_99 - Thread Minimum Cut, [3] Cutting Tip, [4] Setting 86 - Finish Allowance.

Four options for
-
P1 :Single edge cutting, cutting amount constant -
P2 :Double edge cutting, cutting amount constant -
P3 : Single edge cutting, cutting depth constant -
P4 : Double edge cutting, cutting depth constant
G76 Thread Cutting Cycle, Multiple Pass
