Adjustable clearance guide rail of pre stressed stand in large scale forging pump press

Abstract

A gap-adjustable guide track unit for the pre-stressed machine frame of large hydraulic press used for forging is composed of pull screw bolts, nuts, top and bottom transverse beams, square vertical posts between top and bottom transverse beams, movable transverse beam, regulating spacers, wedged guide plate, wedged pads and their fixing screw bolts, and slide plates for said square vertical posts.

Description

Technical field [0001] The invention relates to an adjustable gap guide rail for a prestressed frame of a large forging hydraulic press, which is a manufacturing technology for manufacturing a prestressed frame of a large forging hydraulic press, and is especially suitable for large and high-precision free forging hydraulic presses, belonging to the technical field of large forging hydraulic presses. Background technique [0002] At present, the column of the known free forging hydraulic press adopts a cylindrical guide method, which bears the working load of the hydraulic press, and the movable beam moves up and down on the outer surface of the cylinder through the guide sleeve supported by the spherical bearing, so that it is in the upper and lower position. The forging is deformed between the dies to complete the forging process. The column is prestressed connected with the upper beam and the lower beam by the inner and outer nuts respectively, and the column between the ...

AI Technical Summary

Problems solved by technology

The column is prestressed connected with the upper beam and the lower beam by the inner and outer nuts respectively, and the column between the upper and lower beams is not prestressed, and this part accounts for 2 / 3 of the length of the entire stressed part; , The column section between the lower beam and the movable beam are affected by the eccentric moment of the forging process, which makes the force of the column in this part very complicated. There are both axial tensile force and bending moment. The above load is Alternate cycle, the reliability and service life of the column are greatly reduced, and column fracture accidents have occurred many times; the cylindrical column-guide sleeve guide mechanism cannot adjust the guide gap accurately and conveniently, especially when the forging hydraulic press works in a hot state. The thermal deformation of the components is large, and it is impossible to coordinate the gap between cold and hot states. The gap can only be enlarged, resulting in a decrease in the accuracy of the hydraulic press, low size and shape accuracy of the produced forgings, and a large margin, resulting in problems in raw materials, heat treatment, machining, etc. Huge waste of multiple links

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