Define The Blank: Blk Form - HEIDENHAIN TNC 620 User Manual

3
Programming: Fundamentals, File Management
3.2 Opening programs and entering

Define the blank: BLK FORM

Immediately after initiating a new program, you define an
unmachined workpiece blank. If you wish to define the blank at a
later stage, press the SPEC FCT key, the PROGRAM DEFAULTS soft
key, and then the BLK FORM soft key. The TNC needs this definition
for graphic simulation.
You only need to define the workpiece blank if you
wish to run a graphic test for the program!
The TNC can depict various types of blank forms.
Soft key Function
Define a rectangular blank
Define a cylindrical blank
Define a rotationally symmetric blank
of any shape
Rectangular blank
The sides of the cuboid lie parallel to the X, Y and Z axes. This
blank is defined by two of its corner points:
MIN point: the smallest X, Y and Z coordinates of the blank
form, entered as absolute values
MAX point: the largest X, Y and Z coordinates of the blank form,
entered as absolute or incremental values
Example: Display the BLK FORM in the NC program
0 BEGIN PGM NEW MM
1 BLK FORM 0.1 Z X+0 Y+0 Z-40
2 BLK FORM 0.2 X+100 Y+100 Z+0
3 END PGM NEW MM
106
Program begin, name, unit of measure
Spindle axis, MIN point coordinates
MAX point coordinates
Program end, name, unit of measure
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015