25
English
3-2-2. Designing the flatness and parallelism of
the mounting surfaces
1.
The mounting surfaces of the scale unit should be
machined surfaces with a roughness of 25 S or less.
2.
The setting surfaces on the machine side should be set
so that both the straightness of the linear guides of the
machine’s sliding stage and the parallelism with the
setting surfaces provided on the brackets at both ends
of the scale unit are 0.1 mm (0.004 in) or less.
3.
The setting surfaces can be provided as follows.
•
Machining a setting surface on the machine side
beforehand
•
Preparing a jig or block as shown in the figure
•
Using a standard block gauge
•
Using a dial gauge or other measuring instrument
(See the figures below.)
0.05
M
0±0.1
Block gauge
Jig block
Fig.1
Fig.2
Fig.3
Setting surfaces
M : Machine guideway
