Fig. 1.3.2 (a)
The following two coordinate systems are specified at different locations:
(1)Coordinate system on part drawing
The coordinate system is written on the part drawing. As the program
data, the coordinate values on this coordinate system are used.
(2)Coordinate system specified by the CNC
The coordinate system is prepared on the actual machine tool table.
This can be achieved by programming the distance from the current
position of the tool to the zero point of the coordinate system to be set.
Distance to the zero point of a coor-
dinate system to be set
Present tool position
Fig. 1.3.2 (b) Coordinate system specified by the CNC
Coordinate System on
Part Drawing and
Specified by CNC –
D Coordinate system