Tool Parameters 12; Tool Parameters 15; Tool Parameters 21 - Siemens SINUMERIK 840D sl Function Manual
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W1: Tool offset
2.4 Tool parameters
2.4.6
Tool parameters 12 ... 14: Wear - tool lengths
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 variable can change as a result of the following influences:
● Differences between the tool fixture on the tool measurement machine and the tool fixture
on the machine tool
● Tool wear caused during service life by machining
● Definition of a finishing allowance
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, ...) to arrive at the size of the active tool.
2.4.7
Tool parameters 15 ... 20: Wear - tool shape
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 variable can change as a result of the following influences:
● Tool wear caused during service life by machining
● Definition of a finishing allowance
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) to arrive at the shape of the active tool.
2.4.8
Tool parameters 21 ... 23: Base dimension / adapter dimension
Tool base dimension/adapter dimension can be used when the reference point of the toolholder
(tool size) differs from the reference point of the toolholder.
This will occur in the following situations:
● Tool and tool adapter are measured separately, however, are installed in the machine as
one unit (the tool size and adapter size are entered separately in a tool cutting edge).
→ See example 1.
● The tool is inserted in a second tool adapter which is located in a different position (e.g.
vertical and horizontal spindle).
● The tool adapters of a tool turret are in different positions.
→ See example 2.
In order that the discrepancy between the toolholder reference point F and the tool carrier
reference point T' can be corrected on the three geometry axes (3-dimensional), all 3 basic
lengths are always active irrespective of the tool type. In other words, a twist drill (tool type 200)
with a tool length compensation (length 1) can also have a base dimension/adapter dimension
in 3 axes.
46
Function Manual, 06/2019, A5E47435126B AA
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