PRESS SHUTHEIGHT ADJUSTMENT USING BOLSTER HYDRAULIC TIE ROD ASSEMBLIES
First Claim
Patent Images
1. A press comprising:
- a crown and a bed attached together by a frame, said bed having a bolster attached thereto;
a slide attached to said crown for reciprocating movement in opposed relation to said bed;
a plurality of tie rods connecting between said bolster and said bed;
a plurality of pressure-activated tie rod nut assemblies attached to at least two said tie rods adjacent one of said bolster and said bed so that when activated, said tie rod nut assemblies force said bolster toward said bed;
a shutheight measuring means for measuring the shutheight of said press, said shutheight measuring means associated with said press; and
feedback means connected to said shutheight measuring means and said tie rod nut assemblies for comparing a predetermined desired shutheight to the shutheight measured by said measuring means and pressure activating said tie rod nut assemblies when the measured shutheight deviates from the predetermined shutheight, whereby shutheight is controlled.
1 Assignment
0 Petitions
Accused Products
Abstract
A shutheight adjustment system incorporating tie rods and accompanying hydraulic tie rod nut assemblies in connecting a bed to a bolster of a mechanical press for dynamically altering the tensioning of the tie rods. Each hydraulic tie rod nut assembly includes a cylinder with an inner sliding piston threadably engaging the tie rod. A pressurizing mechanism injects pressurized fluid within a chamber formed by the piston and cylinder. By increasing pressure within the chamber of the hydraulic tie rod nut assembly, compression between the press bed and press bolster may be increased, thereby increasing the press shutheight.
-
Citations
20 Claims
-
1. A press comprising:
-
a crown and a bed attached together by a frame, said bed having a bolster attached thereto;
a slide attached to said crown for reciprocating movement in opposed relation to said bed;
a plurality of tie rods connecting between said bolster and said bed;
a plurality of pressure-activated tie rod nut assemblies attached to at least two said tie rods adjacent one of said bolster and said bed so that when activated, said tie rod nut assemblies force said bolster toward said bed;
a shutheight measuring means for measuring the shutheight of said press, said shutheight measuring means associated with said press; and
feedback means connected to said shutheight measuring means and said tie rod nut assemblies for comparing a predetermined desired shutheight to the shutheight measured by said measuring means and pressure activating said tie rod nut assemblies when the measured shutheight deviates from the predetermined shutheight, whereby shutheight is controlled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A press comprising:
-
a crown and a bed attached together by a frame, said bed having a bolster attached thereto;
a slide attached to said crown for reciprocating movement in opposed relation to said bed;
a plurality of tie rods connecting between said bolster and said bed;
a plurality of pressure-activated tie rod nut assemblies, at least two said tie rods having at least one tie rod nut assembly mounted thereto adjacent one of said bolster and said bed, each said tie rod nut assembly including a cylinder block having a cylinder bore fit about said tie rod, a piston threadedly engaged about said tie rod and slidably disposed within said cylinder bore, thereby forming an inner chamber, said inner chamber pressurized with a liquid, and a tie rod nut threadably engaged about said tie rod and engaging said piston so that an increase in pressure within said inner chamber forces said tie rod nut away from said cylinder block;
a shutheight measuring means for measuring the shutheight of said press, said measuring means operatively associated with said press; and
feedback means connected to said shutheight measuring means and to said tie rod nut assemblies for comparing a predetermined desired shutheight to the shutheight measured by said measuring means and altering the pressure within each said inner chamber when the measured shutheight deviates from the predetermined shutheight, whereby shutheight is controlled. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A press comprising:
-
a crown and a bed attached together by a frame;
a bolster attached to said bed at a position intermediate said bed and said crown;
a slide attached to said crown for reciprocating movement in opposed relation to said bolster, said slide and said bolster having a shutheight associated therewith;
a plurality of tie rods connecting said bolster to said bed; and
a plurality of pressure-activated tie rod nut assemblies, at least two said tie rods having at least one tie rod assembly mounted thereto adjacent one of said bolster and said bed, each said tie rod nut assembly being configured for selectively adjusting at least one of tolerance and compression between said bed and said bolster to thereby effect a proportional change in the shutheight. - View Dependent Claims (18, 19, 20)
-
Specification