Specifications

2 PARAMETER
2-66
Classification
USER
Display title
POINT
Address Meaning Description
Radial depth-of-cut setting element for end
milling
Program type M
Conditions Immediate
D20
Unit 1%
Setting range 0 to 100
Element used to automatically set the radial depth-of-cut per end milling
operation
Depth-of-cut = nominal diameter × D20
Depth-of-cut is automatically set according to the value of this parameter
when nominal diameter of the end mill is input.
Example:
SNo. TOOL NOM-
φ
No. HOLE-
φ
HOLE-DEP PRE-DIA PRE-DEP RGH DEPTH
1 END MILL 20. 40. 10. 30.
"
0.
12.
(NOM-φ × D20)
Reference bottom-finishing allowance for
end milling
Program type M
Conditions Immediate
D21
Unit 0.1 mm/0.01 inch
Setting range 0 to 99
The reference value for calculation of a bottom-finishing allowance which
corresponds to the roughness level of the end milling (tool sequence). The
finishing allowance in the case of roughness level 4 becomes the value of
this parameter, and the values for all other roughness levels are set using
the expressions listed in the table below.
Tapping-cycle dwell time
Program type M
Conditions Immediate
D22
Unit 0.01 sec.
Setting range 0 to 99
Dwell time at the hole bottom or at the R-point. This value is valid when 1
is set for bit 0, 1 or 2 of parameter D91.
Note:
This parameter is valid only when the setting for roughness (RGH) of
tapping (tool sequence) is FIX.
Prehole clearance for end milling
Program type M
Conditions Immediate
D23
Unit 1 mm/0.1 inch
Setting range 0 to 999
The excess amount of prehole diameter over nominal diameter that is
used to specify whether the Z-axis is to be moved at a rapid feed rate or at
a cutting feed rate during true-circle processing with the end mill
MPL012
Cutting feed Rapid feed
D23 D23
Roughness Bottom-finishing allowance
0 to 3 0.0
4 D21
5 D21 × 0.7
6 D21 × 0.7 × 0.7
7 D21 × 0.7 × 0.7 × 0.7
8 D21 × 0.7 × 0.7 × 0.7 × 0.7
9 D21 × 0.7 × 0.7 × 0.7 × 0.7 × 0.7
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