28
11-2. Backlash measuring method of worm gear of tilting axis
1
）
Set the dial gauge the periphery of the table top face.
2
）
Read the value of dial gauge at the position where the table stops after rotating the tilting body slowly
in one way with the flat steel or round bar inserted in eye bolts screwed in tap holes on the table back
face (with worm wheel gear tooth attached). At this time, for the torque added to the tilting body, refer
to the list created later. Next, rotate the tilting body under the same condition in the reverse direction
to read the value of dial gauge. This difference of measured values is the backlash. (See Fig.7)
T = F
×
L
T: Torque (N
・
m)
F: Effort force (N)
L: Distance from table center to
point to add force F (m)
Table type: TT200
Torque T (N
・
m)
Rotating axis
30
Tilting axis
9
Fig.7
