Programming instructions

ADT-CNC4620 Programming Manual
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fixed linear or arc track. This system allows G instruction and manual fast moving; X axis
direction and Z axis direction can’t move simultaneously in manual fast moving.
The fast moving speeds of X axis and Z axis are set by X axis fast moving speed and Z axis
fast moving speed respectively. You can adjust the actual fast moving speed with the ratio
adjustment key, and the actual fast moving speed is 25%, 50% or 100% of the set fast moving
speed.
The ratio isn’t saved after power off, and the initial value is 100 after electrified.
2.4.2. Cutting feeding instruction F
Cutting feeding: the system controls the motion of X axis and Z axis simultaneously, making
the motion track of the tool consistent with the track (linear, arc) defined by the instruction,
and the instantaneous speed of the motion track in tangential direction is consistent with F
instruction value, and the process of this motion control is called cutting feeding or
interpolation. The speed of cutting feeding is specified by F instruction word. When the
system is executing interpolation instruction (cutting feeding), it desomposes the cutting
feeding speed specified by F instruction to X axis and Z axis according to the programming
track, the system controls the instantaneous speed of X axis and Z axis simultaneously,
making the vector synthesis speed of the two direction equal to F instruction value.
Remark: use the feeding ratio key on the panel of the machine tool or external ratio switch
to adjust the cutting feeding speed in real time, and the actual cutting feeding speed can be
adjusted in the range of 0~150% of the instruction speed by 16 levels (10% every level). The
adjustment of feeding ratio is invalid for thread cutting.
F is the vector synthesis speed of the instantaneous speed of X axis and Z axis;
dx is the instantaneous (dt period) increment of X axis, and fx is the instantaneous speed of
X axis;
dz is the instantaneous (dt period) increment of Z axis, and fz is the instantaneous speed of Z
axis;
For example: as in Fig. 2-4-1, the values in the brackets are coordinates of the points
(diameter value in X direction).