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Festo 7ELCC_TB_KFb_en
For this reason, several measurements should always be taken in order to differentiate between the necessary funda-
mental (natural frequency) and the harmonic. Only this frequency can be used to conclude the force acting in the strand.
5.1.4
Checking the toothed belt pretension
Before the toothed belt pretension can be measured, the drive head on the slide module must be moved back and
forth several times so that the toothed belt can fully settle and tension differences can be levelled out.
Measuring the toothed belt pretension
1. Set the distance between the drive head and clamping component
module (L1) according to the Table.
–
For normal strokes (
››
100 mm)
Type
Distance L1
ELCC-TB-KF-60-…(-F1)
80 mm
ELCC-TB-KF-70-…(-F1)
80 mm
ELCC-TB-KF-90-…(-F1)
80 mm
ELCC-TB-KF-110
80 mm
1)
Feature F1 = PU1 toothed belt
–
For short strokes (
..
99 mm)
Type
Distance L1
ELCC-TB-KF-60-…(-F1)
33 mm
ELCC-TB-KF-70-…(-F1)
33 mm
ELCC-TB-KF-90-…(-F1)
33 mm
ELCC-TB-KF-110
33 mm
1)
Feature F1 = PU1 toothed belt
2. Align the acoustic frequency measuring device towards the centre of the
toothed belt as described in the corresponding operating instructions.
3. Make the toothed belt oscillate by hitting it, e.g. with an Allen key or punch.
Several measurements should be taken to compensate for measurement
tolerances.
The toothed belt must be able to oscillate freely.
4. Compare the measured values with the respective value (
Table).
For normal strokes (
≥≥
100 mm)
Chloroprene belt (CR)
Type
Minimum frequency (f)
Maximum frequency (f)
ELCC-TB-KF-60
235 Hz
239 Hz
ELCC-TB-KF-70
249 Hz
253 Hz
ELCC-TB-KF-90
215 Hz
219 Hz
ELCC-TB-KF-110
204 Hz
207 Hz
Polyurethane belt (PU1 / PU2)
Type
Minimum frequency (f)
Maximum frequency (f)
ELCC-TB-KF-60-…(-F1)
211 Hz
214 Hz
ELCC-TB-KF-70-…(-F1)
217 Hz
220 Hz
ELCC-TB-KF-90-…(-F1)
192 Hz
195 Hz
Содержание 8060571
Страница 14: ...14 52 Festo 7ELCC_TB_KFb_en 3 1 ELCC TB KF 60 F1 component overview...
Страница 16: ...16 52 Festo 7ELCC_TB_KFb_en 3 2 ELCC TB KF 70 F1 component overview...
Страница 18: ...18 52 Festo 7ELCC_TB_KFb_en 3 3 ELCC TB KF 90 F1 component overview...
Страница 20: ...20 52 Festo 7ELCC_TB_KFb_en 3 4 ELCC TB KF 110 components overview...