Back to results
US 4,730,094 AGranted
Electric spark machining apparatus
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsJun Aramaki, Toshiaki Tanaka
Life of this patent
Estimating the term…
Abstract
An electric spark machining apparatus includes a cooling device which is arranged so that machining liquid pumped up from a reservoir and fed to an electric spark machine is controlled in temperature to minimize a temperature difference between machining liquid entering into the electric spark machine and the latter.
Claims5
An electric spark machining apparatus, comprising:
- an electric spark machine (1), a pump (5) for supplying machining liquid (21) to a machining portion of said electric spark machine, a cooling device (7) disposed in series and downstream of said pump in a liquid supply path (6) extending from said pump to said electric spark machine, means (9) for sensing the temperature of pumped machining liquid flowing out from said cooling device, and means (110) responsive to an output signal from said sensing means for controlling the cooling capacity of said cooling device and attendantly the temperature of said machining liquid.
Dependencies are inferred from the claim text.