Process and machine for parting the cap of connecting rods, part

Details Process and machine for parting the cap of connecting rods, part Process and machine for parting the cap of connecting rods, part

1995-10-10

1997-12-23

Rada, Rinaldi I.

Severing by tearing or breaking

Breaking or tearing apparatus

Work-parting pullers

225103, 2988809, B23P 1702

Patent

active

056999470

ABSTRACT:
According to the invention, parting of the cap of the connecting rod is achieved by engaging the eye of the big end of the connecting rod with two semicylindrical fixtures, respectively a fixed fixture and a movable fixture, which are actuated by a hydraulic actuator which is interposed between them and is adapted to expand the fixtures in a diametrical direction against the inner surface of the eye of the big end of the connecting rod, subjecting the piston of the actuator to the action of a hydraulic fluid fed into the respective actuation cylinder at an optional pre-loading pressure that is in any case lower than the pressure required to reach the yield point of the material of the connecting rod, and producing an instantaneous peak in the pressure of the fluid fed to the hydraulic actuator by means of an auxiliary piston that is subjected to the momentary action of a striking mass.

REFERENCES:
patent: 4754906 (1988-07-01), Brovold
patent: 4768694 (1988-09-01), Fabris et al.
patent: 5105538 (1992-04-01), Hoag et al.
patent: 5169046 (1992-12-01), Miessen et al.
patent: 5199627 (1993-04-01), Christensen
patent: 5263622 (1993-11-01), Henzler et al.
patent: 5320265 (1994-06-01), Becker
patent: 5353500 (1994-10-01), Hoag et al.
patent: 5503317 (1996-04-01), Jones et al.
patent: 5566449 (1996-10-01), Okamoto et al.
"Connecting Rods Are Cracked to Perfection", Machine Design, Mar. 10, 1988, pp. 66-67.

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