34
WWW.PARKERMOTION.COM
PH: (724)
-
861
-
8200
HMR Series Positioners
9.7.2
Testing the toothed belt tension with a force/displacement measuring device
Please direct any queries on the force/displacement measuring device to Parker, ID no. 037
-
000202.
Measurement process:
•
For vertical alignment of the drive, first dismantle the payload.
•
The IP54 cover must be opened so that the toothed belt is accessible, in accordance with section 7.4.1.
•
Move the carriage without loads in both directions, so that the toothed belt can settle.
•
Adjust
Measurement A
from the middle
drive shaft
to the
carriage
with 500 mm or 250 mm
for short drives
•
For a correct belt tension the belt must be able to be pushed through 6 to 7 mm for an uncovered belt
length of 500 mm or 3 to 3.5 mm for 250 mm.
With a force/displacement measuring device (Dynamometer FDN200 with test pins, ID No. 16187FIL) the following force
should be read:
If the value measured is lower than the value stated in the table above, the toothed belt must be replaced.
9.7.3
Tensioning of the belt
•
Remove the
carriage end cap
in order to reach the parts underneath
•
Loosen the
nut
from
spiral tension pin
and
lock screw.
•
Check the belt tensioning while screwing the
Tension pin
as per section 9.7.1.
•
If the belt tensioning is adjusted the
nut
of the
Tension pin
can be tightened and the
lock screws
equally
fixed by 10% of the shown value.
Product size,
Belt
Clear belt length 500mm
Clear belt length 250mm
Motor units
Force for 7 mm
Force for 3.5 mm
HMR08
20 AT 3
20 ± 1 N
20 ± 1 N
HMR11
25 RPP 5
43 ± 1 N
43 ± 1 N
HMR15 / 090°/270°
40 RPP 5
62 ± 1 N
62 ± 1 N
HMR15 / 0°/180°
25 RPP 5
43 ± 1 N
43 ± 1 N
HMR18 / 090°/270°
50 RPP 5
71 ± 1 N
71 ± 1 N
HMR18 / 0°/180°
40 RPP 5
60 ± 1 N
60 ± 1 N
HMR24 / 90°/270°
75 RPP 8
161 ± 2 N
161 ± 2 N
HMR24 / 0°/180°
50 RPP 8
196 ± 2 N
196 ± 2 N
Toothed belt force
Carriage End Cap
Carriage
Nut
Tension pin
Lock screw
