Precise machining fixture for parts of mechanical pressing machine

Abstract

The invention discloses a precise machining fixture for parts of a mechanical pressing machine. The precise machining fixture for the parts of the mechanical pressing machine comprises a clamp body, a90-degree rotary workbench, and an internal gear pair, wherein the clamp body comprises a bottom plate, two support plates which are vertically arranged at an interval, and a side plate are arrangedon the bottom plate, a support shaft is arranged on the upper parts of the two support blocks, a 90-degree included angle is formed between the upper end surface and the front end surface of each support plate, and the upper end surface and the front end surface form circular-angle transition, and arc-surface guide rail grooves are formed in parts at the outer sides of the two support plates, of the bottom plate separately; the 90-degree rotary workbench comprises a workbench surface, a support rod and arc-shaped guide rails, the workbench surface is hinged to the support shaft through a self-lubricating shaft sleeve arranged at the bottom of the workbench surface, a trapezoidal groove is formed in the upper side of the workbench surface and a V-shaped location block is arranged at the upper side of the workbench surface, and the arc-shaped guide rails are movably installed in the arc-surface guide rail grooves; and the internal gear pair comprises a fan-shaped internal gear installedon the lower surface of the workbench surface. The precise machining fixture for the parts of the mechanical pressing machine has the advantages of being stable in structure, high in rigidity, capableof increasing the machining efficiency, high in clamping location assembly and rotary repeated location accuracy, and firm and reliable in brake, and the like, improves the part machining quality, and increases the part machining efficiency.

Description

Technical field: [0001] The invention relates to a precision machining tool for parts of a mechanical press. Background technique: [0002] At present, the main parts such as flywheels and support sleeves widely used in mechanical presses usually need to process long and deep oblique holes inside to lubricate the main drive rotating parts of mechanical presses, and some disc parts also need to be processed on the side. Straight, inclined hole drilling, reaming or milling of inclined surfaces. How to firmly clamp and fix parts such as flywheels, support sleeves or discs on the workbench of gantry drills, milling machines and other equipment or ground platforms, and realize the precision of long and deep inclined hole drilling, reaming or milling on oblique vertical planes , high-efficiency processing, and the existing process tooling can satisfy ordinary parts of this type with low requirements. There are many problems in the existing technical structure: on the one hand, d...

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Problems solved by technology

[0003] In order to make up for the deficiencies in the prior art, the present invention provides a precision machining tool for mechanical press parts, which solves the problem of movement in the axial and radial gaps of the workpiece and the bending plate of the fixture during the rotation process after the parts are clamped, and the rotation guide , The problem of poor positioning accuracy solves the problem of repeated positioning accuracy of the rotation tilt angle or low display resolution; solves the problem that the rigidity of the process tooling is insufficient, and it is easy to cause deformation or loosening during processing, which greatly affects the accuracy of the processed parts.

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