Device and method for measuring coaxiality of horizontal perforating punch of multi-directional die forging hydraulic press

Abstract

A device and method for measuring the coaxiality of a horizontal perforating punch of a multi-directional die forging hydraulic press are provided. The device comprises: a measuring scale and a force application base; the measuring scale comprises a main scale and a secondary scale; the secondary scale is arranged upon two horizontal punch base parts, wherein two arc-shaped slide blocks of the secondary scale are in touch with the two horizontal punch base parts at corresponding positions; the main scale is arranged under the horizontal punch base parts and the lower part of a large base plate of the main scale is provided with a thin type hydraulic lifting jack; the bottom of the thin type hydraulic lifting jack is in touch with an inner plane of the force application base. The provided device for measuring coaxiality of a horizontal perforating punch of a multi-directional die forging hydraulic press has simple operation which is easy to learn, and high measurement accuracy which reaches 0.02mm theoretically; the measured data is easy to extract and is referential and can be referred to directly when adjusting; After the coaxiality error of the horizontal punch is adjusted and is qualified, not only the size accuracy requirement of forged pieces produced can be met, the outline size quality of products can be guaranteed, but also the service life of forging dies and especially the punch can be prolonged, and the economic benefit is obvious.

Description

technical field [0001] The invention relates to a measuring device, in particular to a measuring device for the coaxiality of a horizontal punching punch of a multi-directional die forging hydraulic press. Background technique [0002] In the production of multi-directional die forging three-way valve body forgings, the left and right horizontal punches of the hydraulic press are respectively installed on the piston rods of the left and right horizontal perforating cylinders and kept coaxial with them, and the left and right horizontal perforating cylinders are respectively installed on both sides of the inside of the frame. Due to the production and installation errors of the hydraulic press frame itself, it is difficult to ensure that the coaxiality value of the left and right horizontal perforating cylinder piston rods is within the ideal deviation range, that is, it is difficult to ensure that the coaxiality value of the left and right horizontal punches is within the ide...

AI Technical Summary

Problems solved by technology

Briefly, according to the theory of plane force couple, that is, when the hydraulic machine is working normally, the force couple will frequently and repeatedly act on the forging die to cause damage to it, especially for the punches in the high temperature state, including the upper punch and the horizontal punch. Fatigue failure, leading to the generation of fatigue cracks

With the influence of the forging force and the deformation of the frame itself during production, the concentricity deviation tends to expand, which has a great impact on the final forming size of the forging (such as the eccentricity of the upper vertical hole, the horizontal hole Not concentric, etc.), but more importantly, it will have a serious impact on the service life of the forging die, not only reducing the overall life of the forging die, but also one of the important reasons for the sudden breakage of the punch

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