Transmission part self-centering fixture

Abstract

The invention relates to the technical field of product machining center fixtures, in particular to a transmission part self-centering fixture capable of conveniently realizing symmetric positioning and fixation. The transmission part self-centering fixture comprises a baseplate; a positioning and clamping mechanism is mounted on the baseplate, and comprises a longitudinal positioning structure and a transverse positioning structure; the longitudinal positioning structure comprises dowel pins arranged triangularly and achieving a support effect, a horizontal pressing surface of a pressing plate, and a locking block; the pressing plate is mounted on a pressing plate bracket; the locking block is pressed on the pressing plate, and is connected with a locking support base by using a bolt; the transverse positioning structure comprises a wedge positioning mechanism, a side clamping mechanism and a side pressing mechanism; the wedge positioning mechanism and the side clamping mechanism are arranged on one sides of the dowel pins; the side pressing mechanism is arranged on the other sides of the dowel pins; the wedge positioning mechanism comprises a longitudinal push block, and transverse positioning blocks arranged on two sides of the longitudinal push block; and the longitudinal push block and the transverse positioning blocks are matched through inclined surfaces.

Description

technical field [0001] The invention relates to the technical field of fixtures for product machining centers, in particular to a self-centering fixture for gearbox parts. Background technique [0002] The automobile gearbox is an important part of the automobile. It is composed of many parts. When the surface, hole, shaft and other elements processed by the machining center of these parts have symmetry requirements, strict requirements are placed on the positioning and clamping of the tooling. The traditional six-point positioning method usually cannot effectively and stably control the required symmetry when the blank surface is used for positioning. If the positioning points that affect the symmetry are made adjustable, although the requirements for the symmetry of the parts can be met, it is not suitable for mass production and automated production transformation. For some special parts, such as thin-walled parts and complex irregular structural parts, when they have sy...

AI Technical Summary

Problems solved by technology

The traditional six-point positioning method usually cannot effectively and stably control the required symmetry when the blank surface is used for positioning

If the positioning point that affects the symmetry is made adjustable, although it can meet the requirements of the symmetry of the part, it is not suitable for mass production and automatic production transformation

For some special parts, such as thin-walled parts and complex irregular structural parts, when they have symmetry requirements, they need to be clamped and positioned symmetrically when they are processed and produced. Due to the limitations of processing equipment and the environment, the traditional There is a certain difficulty in positioning the positioning tool, and its symmetry cannot be guaranteed

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