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Harmonic
Differential HDD |
The
Candy Harmonic Drive Differential, HDD series,
is a shaft-mounted 1:1 transmission which
provides infinite, bi-directional position
control. When mounted to the end of a roll
shaft, the HDD offers static and dynamic phase
or speed adjustment. The HDD is a compact,
versatile arrangement ideal for retrofit upgrades
as well as new machine designs.
When the control shaft is held stationary,
the HDD series operates as a 1:1 transmission
with input and output members rotating in
the same direction. If a rotation is applied
to the control shaft, either manually or with
a control motor, a differential action occurs
between the input and output, making the HDD
well suited for position or registration control
applications. In addition to positioning,
these transmissions may be used for speed
trimming or tensioning by applying a constant
rotation to the control shaft. |
| Shaft-Mounted
Rotary Motion Controls |
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1:1
Phase transmissions for precise
rotary positioning and speed trimming
control. |
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Low
backlash and transmission error
provides superior positional accuracy
in a compact design. |
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Reduces
costly downtime associated with
trial and error machine start-ups
and changeovers. |
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| Register printing, perfing
and die cutting cylinders with open or closed loop
HDD systems. |
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