Title:
METALWORKING APPARATUS WITH CUBRICATING AND COOLING DEVICE
Document Type and Number:
WIPO Patent Application WO2001032329
Kind Code:
A3
Abstract:
A metalworking apparatus comprising a drive section and a die pack assembly. The drive section includes a reciprocally movable ram which is movable through forward working and rearward return strokes through the die pack assembly. The drive section is lubricated by a gear oil based on polyglycol, and the die pack assembly includes a water-based coolant. Seals are used to prevent cross-contamination of the gear oil and coolant. However, contamination does occur. The present invention therefore provides a removal apparatus for removing any polyglycol from the gear oil that has contaminated the coolant. The contaminated coolant is removed from and then returned to the die pack assembly on a continuous basis. The removal apparatus preferably includes a separation tank (6) which separates the polyglycol from the coolant. The removal apparatus is preferably a portable system.
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Inventors:
COATES DAVID ANTHONY (GB)
Application Number:
PCT/GB2000/004072
Publication Date:
November 01, 2001
Filing Date:
October 23, 2000
Export Citation:
Assignee:
CASTROL LTD (GB)
COATES DAVID ANTHONY (GB)
COATES DAVID ANTHONY (GB)
International Classes:
B21D37/18; B23Q11/10; (IPC1-7): B21D22/20
Foreign References:
US4173138A | 1979-11-06 | |||
US5525371A | 1996-06-11 | |||
US4535615A | 1985-08-20 | |||
DE19500267A1 | 1996-07-11 | |||
US5542983A | 1996-08-06 | |||
FR2287284A1 | 1976-05-07 |
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