Siemens SINUMERIK 840D sl Function Manual page 1834

Detailed Description
2.3 Tool cutting edge
2.3.6 Wear tool length compensation (tool parameters 12 to 14)
Meaning
While geometry tool length compensation (tool parameters 3 to 5) is used to define the size
of the tool, wear tool length compensation can be used to correct the change in the active
tool size. The active tool size can change due to:
• Differences between the tool fixture on the tool measurement machine and the tool fixture
• Tool wear caused during service life by machining
• Definition of a finishing allowance.
Active tool size
The geometry tool compensation (tool parameters 3 to 5) and the wear tool length
compensation (tool parameters 12 to 14) are added together (geometry tool length 1 is
added to wear tool length 1, etc.) to arrive at the size of the active tool.
2.3.7 Wear tool radius compensation (tool parameters 15 to 20)
Meaning
While geometry tool radius compensation (tool parameters 6 to 11) is used to define the
shape of the tool, wear tool radius compensation can be used to correct the change in the
active tool shape.
The active tool size can change due to:
• Tool wear caused during service life by machining
• Definition of a finishing allowance.
Active tool shape
The geometry tool radius compensation (tool parameters 6 to 11) and the wear tool radius
compensation (tool parameters 15 to 20) are added together (geometry tool radius 1 is
added to wear tool radius 1, etc.) to arrive at the shape of the active tool.
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on the machine tool
Basic logic functions: Tool Offset (W1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0