Vibratory Track Screw Feeder FF/FM503H ver2
15
7.5.
Escapement unit left and right operation speeds adjustment
This adjusts the left and right operation speeds of the escapement unit. To adjust the speeds, loosen the lock nut
(as shown in the figure below) and rotate the speed controller (4K type) or the speed controller (or SpiCon
bolt) (4G type) according to the table below. The left and right operation speeds are influenced by the air
pressure and the screw feeding air flow rate etc. For this reason, after adjusting the air pressure, adjust the
movement speeds by actually feeding the screws. After the adjustment, be sure to tighten the lock nut.
<Relation between adjustment methods and results>
Speed controller or SpiCon bolt rotating direction Escapement unit left and right operation speeds
Rotate to the right (Tightening direction)
Decreases
Rotate to the left (Loosening direction)
Increases
Fig.18
Fig.19
7.6.
Adjustment of vibrator vibration frequency
This adjusts the speed of the screws traveling along the track.
The following figure shows an approximate relationship between the vibrator vibration frequency and the
vibrator vibration strength.
Although the vibrator vibration strength is largest near the resonance frequency as shown in the figure.
However, we recommend that the frequency be adjusted to a frequency a little higher than the resonance
frequency for stable vibration. (See the range surrounded by the broken line in the figure.)
That is to say, find out a point at which the vibration becomes strongest by varying the frequency. Adjust the
frequency to a value a little higher than the frequency of that point.
If the vibration becomes too strong during the vibrator vibration frequency adjustment operation, weaken the
vibration by performing the vibrator vibration strength adjustment described in the next section, and adjust the
vibrator vibration frequency again.
To adjust the vibrator vibration frequency, change the value of the operation parameter “Vibrator vibration
frequency setting (Pa.11)”. For how to adjust the parameter, refer to
“8. Setup procedures”.
The figure to the left is a schematic diagram showing
how the vibrator vibration strength changes as the
vibration frequency varies with the strength set values
being as parameters (5 types are shown).
(The resonance frequency is determined by mechanical
factors, such as the track mass and the flat spring
strength.)
Fig.20
Vibration Frequency (Hz)
V
ib
ra
ti
o
n
s
tr
e
n
g
th
Resonance
frequency
1
2
3
4
5
Vibration strength
Summary of Contents for FF503H
Page 60: ...Memo...
