Incremental Dimension - Siemens SINUMERIK 840DE Programming Manual

1.1.5

Incremental dimension

Production drawings are frequently encountered, however, where the dimensions refer not to
the origin, but to another point on the workpiece. In order to avoid having to convert such
dimensions, it is possible to specify them in incremental dimensions. Incremental dimensions
refer to the positional data for the previous point. Applied to tool movement this means:
The incremental dimensions describe the distance the tool is to travel.
Example of milling
The positional data for points P1 to P3 in incremental dimensions are:
P1 corresponds to X20 Y35 ;(with reference to the zero point)
P2 corresponds to X30 Y20 ;(with reference to P1)
P3 corresponds to X20 Y-35 ;(with reference to P2)
Example of turning
The positions for points P1 to P4 in incremental dimensions are as follows:
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamental Geometrical Principles
1.1 Description of workpiece points
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