REDEX DRP+1 Manual De Usuario página 20

4.5 Proper tooth meshing validation
Checking that both pinions are properly meshing with the rack by measuring the clearance between rack
and pinion teeth (t
1. Place two indicators as follow:
- One between the DRP+ housing or carriage and a fixed
reference (1).
- One between the DRP+ pinion (at pitch diameter) and a
fixed reference (2).
2. Move the carriage in one direction by turning the gearbox
input shaft.
3. Set the two indicators position at "0".
4. Turn the input shaft to move the carriage in the other
direction until both indicators have moved.
The difference between the measurements of the two indicators gives the backlash between rack &
pinion teeth (t
Size
DRP1+
DRP2+
DRP3+
DRP4+
DRP5+
Explanation of t
This operation should be done for both pinions independently. It is also strongly recommended to repeat
this operation at the highest and lowest points of the rack topography (see chapter 4.1).
)
b2
). Compare the value with the values given in the table below.
b2
t acceptable backlash
b2
between rack and pinion
mm
+0.015
0.070
mm
-0.015
mm
+0.015
0.100
mm
-0.015
mm
+0.035
0.135
mm
-0.035
mm
+0.05
0.135
mm
-0.05
mm
+0.070
0.205
mm
-0.070
:
b2
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DRP+ User manual Ref.: RX182/009
Version 01/2017 - English
Page 18 / 30