Magnescale SR138-025R, Instruction Manual

Page: 67 / 180

(E) 15
English
(5) When the specified parallelism for the scale
mounting bracket is not obtained
Insert spacers below the feet and make adjustment by
placing a pick tester or dial gauge at
2
in Fig. 3-7 to adjust
the parallelism to within 0.08 mm/0.03" throughout the
length between may be obtained at the alignment marks.
For the scale unit with a measuring length of more than
1050 mm/41.3", make sure that the parallelism near the
center foot plate is also within 0.08 mm/0.003".
<3> Mounting the slider part
(1) When parallelism and flatness of the mounting
surface are already satisfied
When the mounting surface is finished and its parallelism
and flatness satisfy the specifications below, just mount the
slider part.
Screws used / Washers used: Hexagonal socket head cap
screws M4
×
12 (2 pcs.), 2 plain washers (S)
Tightening torque: 350 N
·
cm
Move the machine table till the mounting surface comes just at
the slider part.
First use the supplied spacers to fill the gap between the
mounting surface and slider part, and then secure the slider part.
Then remove the screws which fix slider holder. In this process,
be careful not to make the slider part and the mounting bracket
contact with each other.
Flatness of C and D surface
Parallelism of C and D surface to
machine table movement
Parallelism between B and C surfaces
Parallelism between B and D surfaces
Clearance between B and C surface
within 0.05 mm/0.02"
within
0.05 mm/60mm
(0.002"/2.36")
8.7 to 8.8 mm/
0.343 to 0.346"
Side
A
: Scale part abutment surface
Side
B
: Scale part installation surface
Side
C
,
D
: Slider part installation surface