Programming instructions

ADT-CNC4620 Programming Manual
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automatically for calculation; if X is short axis, V is the radius.
Instruction function: the motion track of the tool is a straight line from the start point to the end point;
the coordinate axis with larger displacement from the start point to the end point (X
axis depends on the radius value) is the long axis, and the other is the short axis.
During motion, the long axis moves a pitch when the long axis rotates a circle, short
axis and long axis make linear interpolation; when the tool cuts the workpiece, a
spiral grooving with equal pitch is formed on the surface of the workpiece, achieving
thread processing of equal pitch. F instruction word can be used to specify the pitch
of metric thread, and execute G32 instruction to process straight thread,
taper thread
and end thread of metric equal pitch:
If the X coordinates of start point and end point are same (do not enter X or U), it is straight
thread cutting;
If the Z coordinates of start point and end point are same (do not enter Z or W), it is end
thread cutting;
If the X coordinates and Z coordinates of start point and end point are different, it is taper
thread cutting, as in Fig. 3-7-1 below
Fig. 3-7-1
The thread pitch is the displacement of the long axis when the principal axis rotates one circle
(X axis displacement depends on the radius); see Fig. 3-7-2 below for the method to
distinguish the long axis and short axis:
Start point
If Lz ≥ Lx (α≤45°), Z is the long axis;
If Lx ≥ Lz (α>45°), X is the long axis.
Taper thread End point
Fig. 3-7-2
Thread cutting notice:
z The machine tool must be installed with principal axis encoder for thread cutting; the
transmission ration of principal axis encoder and the principal axis is 1:1, modify
#013 principal axis encoder wires, and the system is initialized to 0. When the system
Start point
End point