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NOTICE
NOTICE
11-4. Backlash adjusting method of tilting axis worm gear (See Fig.9)
1) Remove the workpiece, jig, etc. on the table before adjusting and horizontalize the table.
2) Drain lubrication oil from the tilting axis lubrication oil drain port. (See outside view.)
3) Remove cross recessed round head screws
⑥
and
⑦
which fix cover
①
to remove the cover
①
by using two punched taps
⑦
on a diagonal line.
4) The bearing case
④
is positioned by adjusting screws
②
and hexagon socket head cap screws
③
.
5) When loosening four adjusting screws
②
to the same amount and tightening four hexagon socket
head cap screws
③
to the same amount, the bearing case
④
advances and the backlash
becomes small.
The rotating angle of adjusting screw to reduce the backlash to 0.01mm
is as follows:
Type
TT200
Return angle
About 90
°
When adjustment is finished, mount the workpiece, jig, etc. by the reverse procedures as the above and
tighten bolts securely. After mounting, measure the backlash again on the periphery of table at the same
position as the position before adjusting, and check that the measured value is proper.
Adjust the backlash slowly and carefully without adjusting the backlash
at a time.
When mounting the cover
①
, do not damage O-ring
⑤
.
Punched tap
⑦
Bearing case
④
Adjusting screw
②
Hex. socket head
Cap screw
③
Cross recessed round
head screw
⑥
Cover
①
O-ring
⑤
CAUTION
Fig.9