21. TWO–PATH CONTROL
When two tool posts machine the same workpiece simultaneously, the
tool posts can approach each other very closely. If the two tool posts
interfere with each other due to a program error or any other setting error,
a serious damage such as a tool or machine destruction can occur.
The function ” tool post interference check” is available which can
decelerate and stop the two tool posts before the tool posts interfere with
each other due to an incorrect command.
Tool post 1
Tool post 2
The contours of the two tool posts are checked to determine whether or
not an interference occurs.
To make a tool post interference check, data including the relationships
between the two tool posts and interference forbidden areas (that is, tool
shapes) needs to be set. The method of such data setting is described
With the tool post interference check function, whether or not the two tool
posts interfere with each other is determined by checking if the
interference forbidden areas (based on the interference forbidden areas of
the currently selected tools) of the tool posts overlap each other after the
movement of the tool posts.
When reference point return operation is completed with all axes (X1,Z1,
X2, Z2), the reference point of tool post 1 is set at the origin of the ZX
plane coordinate system. At this time, the position of the reference point
of tool post 2 is set in a parameter. The next item describes the reference
Data Setting for the
Tool Post Interference
D Position setting for
reference points of two