HEIDENHAIN 548431-05, User Manual, Page: 57 / 722

Introduction and fundamentals | Tool dimensions
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HEIDENHAIN | MANUALplus 620 | User's Manual | 12/2017
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Tool-tip radius compensation (TRC)
The tip of a lathe tool has a certain radius. When machining tapers,
chamfers and radii, this results in inaccuracies which the control
compensates with its cutting radius compensation function.
Programmed paths of traverse are referenced to the theoretical
tool tip
S . With non-paraxial contours, this will lead to inaccuracies
during machining.
The TRC function compensates for this error by calculating a new
path of traverse, the equidistant line .
The control calculates the TRC for cycle programming. The
smart.Turn and DIN programming feature also takes the TRC into
account in clearance cycles. During DIN programming with single
paths, you can also enable/disable TRC.
The control displays a warning when residual material is left behind.
You can suppress the warning with machine parameter 201000.
Milling cutter radius compensation (MCRC)
In milling operations, the outside diameter of the milling cutter
determines the contour. When the MCRC function is not active,
the center of the cutter is used as the point of reference. The
MCRC function compensates for this error by calculating a new
path of traverse, the equidistant line .