Press shutheight adjustment mechanism
AssigneeThe Minster Machine Company
InventorsEdward A. Daniel, Frederick C. Bergman
Life of this patent
Estimating the term…
Abstract
A shutheight adjustment mechanism of a press including a male threaded member threadedly engaged to a female threaded member with a clearance space therebetween is flooded with a liquid to reduce undamped free movement between the threaded members. Liquid injected in the clearance space causes a squeeze-film to be created, capable of supporting high impulse working loads. Seals define the clearance space to assure that the entire clearance space is filled with liquid. In one embodiment, the shutheight adjustment mechanism is included in the press slide.
Claims18
A press comprising:
- a frame structure with a crown and a bed;
- a slide guided by the frame structure for reciprocating movement in opposed relation to said bed;
- a drive means attached to said frame structure for reciprocating said slide;
- a bolster assembly mounted to said bed;
- a shutheight adjustment mechanism arranged for adjustment-in-motion attached on the press to adjust the shutheight between said slide and said bolster, said mechanism having a male threaded member threadedly engaging a female threaded member, said male and female members having at least two portions that require a clearance space therebetween;
- and
- an injecting means for injecting a liquid within said clearance space whereby undamped free movement between said threaded members is reduced by the formation of a liquid squeeze-film within said clearance space during pressure loads between said portions.
A press comprising:
- a frame structure with a crown and a bed;
- a slide guided by the frame structure for reciprocating movement in opposed relation to said bed;
- a drive means attached to said frame structure for reciprocating said slide in opposed relation to said bed;
- a bolster assembly mounted to said bed;
- a shutheight adjustment mechanism arranged for adjustment-in-motion attached on said slide to adjust the shutheight between said slide and said bed, said mechanism having a male threaded member threadedly engaging a female threaded member, said male and female members having at least two portions that require a clearance space therebetween;
- an injecting means for injecting a liquid within said clearance space whereby undamped free movement between said threaded members is reduced, by the formation of a liquid squeeze-film within said clearance space during pressure loads between said portions;
- and
- a control mechanism to vary the output of injected liquid by said injecting means, a measuring means to measure the shutheight of the press, said control mechanism varying the liquid injected by said injecting means based on said measured shutheight.
A press comprising:
- a frame structure with a crown and a bed;
- a slide guided by the frame structure for reciprocating movement in opposed relation to said bed;
- a device means attached to said frame structure for reciprocating said slide;
- a bolster assembly mounted to said bed;
- a shutheight adjustment mechanism arranged for adjustment-in-motion attached on said slide to adjust the shutheight therebetween, said mechanism having a male threaded member threadedly engaging a female threaded member, said male and female members having at least two portions that require a clearance space therebetween;
- and
- an injecting means for injecting a liquid within said clearance space whereby undamped free movement between said threaded members is reduced, by the formation of a liquid squeeze-film within said clearance space during pressure loads between said portions.
Dependencies are inferred from the claim text.