ADTECH9 Series CNC Programming Manual
The positive directions of rotation axes correspond to the positive directions of X, Y, Z axis, which are
determined according to the forward direction of right hand screw.
Notice:
The X, Y, Z, A, B, C axis motion described in this manual is the tool’s motion relative to the workpiece, i.e. it
is assumed that the workpiece coordinate system has been set.
Coordinate systems of machine tool and workpiece
Machine tool coordinate system:
The coordinate system fixed on the machine tool is created through returning to reference point after NC is
electrified every time. To select machine tool coordinate system, use G53 instruction.
Workpiece coordinate system:
When start programming, the programmer doesn’t know the position of the workpiece on the machine tool,
and usually uses a point on the workpiece as the reference point to write processing program. The coordinate
system created with this reference point is the workpiece coordinate system. When the workpiece is fixed on
the worktable of the machine tool, move the tool to specified workpiece reference point and set the coordinate
value of this point as the origin of workpiece coordinate system, and the tool will use this workpiece
coordinate system as the reference system and process according to program instruction when the system
executes the machining program. Therefore, the origin offset function of coordinate system is very important
to CNC machine tool.
This system can preset six workpiece coordinate systems (nine extended coordinate systems G591-G599 are
added in new version). Set the offset of every workpiece coordinate system origin relative to machine tool
coordinate system origin, and then use G5X (5X is the specific workpiece coordinate system number, the same
below) instruction to select. G5X are nodal instructions, corresponding to 1#~6# preset workpiece coordinate
system respectively.
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