Cutting fluid supply apparatus
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United States of America Patent
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Apr 30, 1985
Grant Date -
N/A
app pub date -
Oct 13, 1983
filing date -
May 7, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system for providing a high pressure pulsating flow of cutting fluid includes a piston pump having a piston cylinder for pumping the cutting fluid and an air cylinder for reciprocatingly actuating the piston cylinder. An air-operated direction change-over valve controls supplying of air to one end of the air cylinder or the other from a compressed air source. A pulse frequency setting unit, including a fluidic NOT device, controls the position of the change-over valve pneumatically thereby determining the frequency of reciprocation of the air cylinder and thereby the frequency of pulsations in flow of the cutting fluid.
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