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There are a number of industrial applications that employ vacuum as a
process. One application is called work holding or vacuum
chucking. In this application the user is employing vacuum as a
pressure force to hold an item in place. There are a number of
applications just to name a few. Vacuum used in moving glass plate,
vacuum to hold down laminate for machining, used with a lathe to hold the
piece in a vacuum chuck and simple pick and place of
components.
The basic principle is this:
Full vacuum develops about -14.7 psi if you can think of vacuum as
negative pressure or, if you will, a 14.7 pound per square inch (psi)
pressure differential from atmospheric pressure. It is possible to
modify the "holding" power of the system by varying the surface
area of the holding mechanism. There are numerous holding devices
made including vacuum suction cups and chucks just to name a few. A
number of these applications can get a little hazardous with having things
rotating at 1200 rpm or holding stuff over peoples heads and the like so
it is important, from a safety "liability" standpoint, to have the
best level of vacuum you can for the application. The HyVac vacuum
pumps develop the maximum holding power for this application creating
vacuum that is 99.97% full vacuum. Our single stage pumps are good
choices for these applications.
These systems tend to be good candidates for leaks, (nature of the
beast) which we often overcome by using larger pumps and generating more
"flow". Many times
these applications are powered by air venturi type systems driven by an
air compressor. Much depends on the specific application and power
required as to the best choice in a vacuum generating device.
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