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This is the value that is used by rotary tools.
As the tool length offset amount, among the offset amounts for the position of the tool moving in the
direction parallel to the control axis, the offset amount in the longitudinal direction of the rotary tool
is registered. The tool length offset amount is set as a minus value.
As the tool radius compensation amount, among the offset amounts for the position of the tool
moving in the direction parallel to the control axis, the offset amount in the radial direction of the
rotary tool is registered. The tool radius compensation amount is set as a plus value.
One offset amount data is registered in one offset number, and the offset Nos. are assigned using
the address D or H commands. When a No. is assigned by a D address command, offset is
provided in the form of the tool radius; when it is assigned by an H address command, it is provided
in the form of the tool length.
Type 2: 1-axis offset amounts/with wear offset [M system]
As with type 1, type 2 is for the offset amounts used by rotary tools.
With type 2, four kinds of offset amount data are registered in one offset No.: the tool length offset
amount, tool length wear offset amount, tool radius compensation amount, and tool radius wear
compensation amount.
When an offset No. is assigned by address D as the offset amount, the tool radius is compensated
using the amount obtained by adding the tool radius compensation amount and tool radius wear
compensation amount. Further, the tool length is offset using the amount obtained by adding the
tool length offset amount and tool length wear offset amount.
Figure: Example of how the offset amount is handled when
using the type 1 tool length offset amount (Offset types I and II
Wear offset amount when
using type 2