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MITSUBISHI CNC
III Functional Specifications
(c) Type 3: 2-axis compensation amounts [L system]
Type 3 is for the compensation amounts used by non-rotary tools.
As the compensation amounts, the tool length along the X, Y and Z axes and the wear amount
along each of these axes, the nose radius and nose radius wear amount, tool tip point P and
tool width can be registered.
Compensation is carried out in the directions of the X, Y and Z axes from the base position in
the program. Generally, the center of the tool rest or the tip of the base tool is used as the
programmed base position.
1. The programmed base position is the center of
(a)
(a) X-axis tool length compensation amount
(b) Base position (base point)
(c) Z-axis tool length compensation amount
The tool tip contour arc radius (nose radius) of a non-rotary tool with an arc (nose radius) at its
tip is registered as the nose radius compensation amount.
(c)
(a) Nose radius compensation
amount
(b) Tool nose center
(c) Imaginary tool nose point
The X-axis tool length compensation amount, Z-axis tool length compensation amount and
nose radius compensation amount are set as plus amounts.
The compensation type (1, 2 or 3) is set using a parameter.
III - 136
the tool rest:
(b)
(c)
(b)
(a)
(a) Z-axis tool length wear compensation amount
(b) Tool nose
(c) X-axis tool length wear compensation amount
2. The programmed base position is the tip of the
base tool:
(d)
(c)
(a)
(a) Z-axis tool length compensation amount
(b)Tool used for machining
(c)X-axis tool length compensation amount
(d) Base position (base point)
(e) Base tool
X
(b)
(c)
(a)
(e)
(b)
Z
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