Table of Contents
Advertisement
Taper mount method
(continued)
Adjust the screws to reduce the range of radial displacement. When adjusting, identify the screw location
u
with the lowest radial displacement and tighten that screw, aiming for the average of the highest and
lowest indicator readings.
Repeat this process until the DTI readings are within ±5 µm at the screw locations.
u
NOTE: It may be necessary to loosen screws whilst tightening other screws.
Step 3
TONiC RESM20 angle encoder system installation guide
NOTE: At this stage, the screws
should only be lightly tightened
(less than 0.5 Nm) to allow
further final adjustment.
Insert the next screws:
u
•
For RESM20 rings with 6, 9 or 12 mounting holes,
insert all the remaining M3 screws.
•
For RESM20 rings with 16 mounting holes, insert
4 equally spaced M3 screws.
•
For RESM20 rings with 18 mounting holes, insert
6 equally spaced M3 screws.
•
For RESM20 rings with 20 mounting holes, insert
8 equally spaced M3 screws (in four groups of two)
between existing screws.
As described in Step 2, adjust all the screws inserted thus
u
far, so that the radial displacement at each screw location
is within ±5 µm.
Again, at this stage, the screws should only be lightly
u
tightened (less than 0.5 Nm).
NOTE: You may notice that the torque required to achieve
the radial displacement tolerance will be slightly higher
during step 3 than during step 2. This is normal.
Step 4
Step 5
Diameter
Recommended
(mm)
torque range
(Nm)
≤ 115
1.5 - 2.1
150 to 255
0.8 - 1.1
300 to 413
0.5 - 0.7
≥ 417
1.2 - 1.7
Insert screws into the remaining mounting holes.
u
Rotate the RESM20 ring, measuring the radial
u
displacement at all of the screw locations.
Tighten the screw with the lowest radial displacement so
u
that it matches the average radial displacement, whilst
ensuring the maximum torque specified in the table is
not exceeded.
Again, rotate the RESM20 ring and re-check the radial
u
displacement at all of the screw locations, tightening
the screw with the lowest radial displacement so that it
matches the average.
Repeat this process until the radial displacement at all
u
of the screw locations is within ±3 µm and that all screw
torques are within the specified range.
Excessive tightening of screws can have a small effect on
u
accuracy. Please contact your local representative for
more details.
Clean ring using Renishaw scale cleaning wipes or a
u
clean, dry, lint-free cloth.
10
Advertisement
Table of Contents
