840D/828D SINUMERIK Operate Page 3
B506
B506
Notes
Section 2
Basic principles of programming
Certain principles should be followed during the creation of part pro-
grams.
The program must ensure that an unlimited number of work pieces can
be produced with the quality (tolerances, surface quality, form and posi-
tion deviation, etc.) as required on the drawing in a minimum of produc-
tion time and the least possible material wastage.
It is always the motion of the tool along the drawn ideal contour of the
work piece.
If tolerances are shown, the programming is always referred to the mid-
dle of the tolerance.
Example: 20 + 0,1 - programmed value = 20,05.
Precise dimension corrections can be carried out on the machine by
means of the wear correction feature for the tool.
The program should exhibit a clear and concise structure and should
contain comments wherever possible to ensure that other users can un-
derstand the layout easily at later stages.
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