Title:
A MACHINE FOR PERFORMING HIGH SPEED STAMPING AND FORMING OPERATIONS
Document Type and Number:
WIPO Patent Application WO1997001404
Kind Code:
A3
Abstract:
A high speed stamping and forming machine (10) is provided having a ram (34) capable of sustained high speed operation. The ram (34) is pivotally attached to a connecting rod (36) which is eccentrically coupled to a drive shaft by means of an eccentric (40) and hydrostatic bearing (50). The drive shaft (30) is journaled in hydrostatic bearings (84, 86) in the frame (12) of the machine. The ram reciprocates toward and away from a bolster plate (20) within a ram bearing (138) having hydrostatic bearings therein. A source of high pressure hydraulic fluid is interconnected to the hydrostatic bearing (50) of the eccentric coupling by means of a fluid coupling (350, 352) consisting of telescoping tubes, one end of which engages a spherically shaped seat (356, 358) in the frame (12) that is in communication with the high pressure fluid source and the other end of which engages a spherical shaped seat (354) in the moving connecting rod (36), which is in communication via a passageway (60) with the hydrostatic bearing (50). A main counterweight (142) is provided on the drive shaft (30) to counterbalance the effects of the reciprocating ram and a two shaft (166), counter-rotating weight system counterbalances lateral loads imposed on the machine (10) by the main counterweight. The bolster plate (20) of the machine is provided with a deep support structure (24) and surrounding concrete (26) to form a stable base (28) to reduce vibrations caused by the impact of the tooling with the strip of material being formed or blanked.
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Inventors:
GRABBE DIMITRY G
Application Number:
PCT/US1996/011192
Publication Date:
June 12, 1997
Filing Date:
June 27, 1996
Export Citation:
Assignee:
WHITAKER CORP (US)
International Classes:
B21D22/00; B21J7/42; B21J9/18; B21J13/08; (IPC1-7): B21D22/00
Domestic Patent References:
| WO1990009851A1 | 1990-09-07 |
Foreign References:
| US4996865A | 1991-03-05 | |||
| US4173138A | 1979-11-06 | |||
| US4578981A | 1986-04-01 |
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