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AssigneeGulf & Western Manufacturing Company
InventorsEdwin A. Spanke, Louis F. Carrieri
Estimating the term…
The reciprocating slide of a mechanically driven press has a ball and socket type interconnection with the connecting rod of the press drive mechanism. The socket component of the interconnection provides a rotatable adjusting screw threadedly interengaged with an annular piston received in a cylinder component on the slide. A locking nut threadedly engages the adjusting screw and is rotatable relative thereto and to the piston to lock the adjusting screw against displacement relative to the piston. During normal press operation the locking nut is biased against a shoulder on the cylinder by hydraulic fluid under pressure in a variable volume chamber between the piston and cylinder components. In response to an overload on the slide, a pressure responsive relief valve releases hydraulic fluid from the chamber and enables relative movement between the piston and cylinder components and thus between the slide and connecting rod.
A press comprising frame means including a bed, a slide supported by said frame means for reciprocating movement toward and away from said bed, drive means for reciprocating said slide and including connecting rod means, and overload responsive slide shut height adjusting means interconnecting said slide and connecting rod means, said adjusting means including cylinder means on one of said slide and connecting rod means, piston means, means axially adjustably mounting said piston means on the other of said slide and connecting rod means, said piston means being axially reciprocably received in said cylinder means, means to limit movement of said piston means in one direction relative to said cylinder means, and hydraulic circuit means including means to deliver hydraulic fluid under pressure between said piston means and cylinder means to move said piston means in said one direction and means to release fluid under pressure from between said piston means and cylinder means in response to an overload on said slide for said piston means to move relative to said cylinder means in the direction opposite said one direction.
A press comprising frame means including a bed, a slide supported by said frame means for reciprocating movement toward and away from said bed, drive means for reciprocating said slide and including connecting rod means, and overload responsive slide shut height adjusting means interconnecting said slide and connecting rod means, said adjusting means including cylinder means, externally threaded means coaxial with said cylinder means, internally threaded annular piston means threadedly received on said externally threaded means and axially slidably received in said cylinder means, said piston means and cylinder means cooperatively defining a variable volume fluid receiving chamber therebetween which increases in response to axial movement of said piston means relative to said cylinder means in one direction, locking nut means threadedly received on said externally threaded means, said cylinder means including abutment means engaged by said locking nut means to limit movement of said piston means relative to said cylinder means in said one direction, one of said cylinder means and externally threaded means being on said slide and the other on said connecting rod means, means to relatively rotate said piston means and said externally threaded means to adjust said slide shut height, and hydraulic circuit means including means to deliver hydraulic fluid under pressure to said fluid receiving chamber to bias said locking nut means against said abutment means and pressure responsive means to release fluid from said chamber in response to an overload on said slide for said piston means to move relative to said cylinder means in the direction opposite said one direction.
Dependencies are inferred from the claim text.