Positioning clamp for machining die core of automobile brake dust cover

Abstract

The invention discloses a positioning clamp for machining a die core of an automobile brake dust cover. The positioning clamp comprises a 3R positioning piece and a chuck, wherein the chuck is mountedon the 3R positioning piece, and the chuck has a plurality of claws. The clamping surface of one of the claws is a plane, and the plane is used for mating with the reference surface of the die core.Before batch electrosparking of die cores, the chuck is first positioned at a suitable position by the 3R positioning piece, so that the plane reaches a predetermined position, the chuck position remains unchanged in the subsequent process, and a die core to be processed is clamped between the plurality of claws, and the reference surface of the die core is matched with the plane, and the die coreis in an accurate processing position. After the die core is processed, the die core is replaced by the next die core to be processed, and the process is repeated. Correction of a die core referenceis simplified, and the plane needs to be corrected only once before the batch processing, and the subsequent processing of the die cores only needs to loosen and tighten the three claws, and enclose the plane and the reference plane of the die cores. Batch rapid and precise positioning processing is thus achieved.

Description

technical field [0001] The invention relates to the technical field of fixtures, in particular to a positioning fixture for processing mold cores of automobile brake dustproof covers. Background technique [0002] figure 1 Shown is a mold core of an automobile brake dust cover mold. The processing steps of the mold core are first to process the rotating part of the mold core, the reference surface A and the reference hole through the turning and milling compound machine tool, and then use the electric spark The processing method is to process the boss B part of the mold core. Since the EDM position and the reference hole have position requirements, it is necessary to check the position of the reference surface A of the mold core clamped on the EDM machine tool before EDM machining. Correction, due to the large amount of mass production and supply of this type of brake dust cover products, the distribution of mold cavities is as large as possible. Generally, a pair of molds ...

AI Technical Summary

Problems solved by technology

[0002] figure 1 Shown is a mold core of an automobile brake dust cover mold. The processing steps of the mold core are first to process the rotating part of the mold core, the reference surface A and the reference hole through the turning and milling compound machine tool, and then use the electric spark The processing method is to process the boss B part of the mold core. Since the EDM position and the reference hole have position requirements, it is necessary to check the position of the reference surface A of the mold core clamped on the EDM machine tool before EDM machining. Correction, due to the large amount of mass production and supply of this type of brake dust cover products, the distribution of mold cavities is as large as possible. Generally, a pair of molds is more than 40 cavities, that is, the mold core is 40 pieces*2 (two sets of mold cores are produced in rotation ), in the prior art, every time the EDM machine tool clamps the mold core, it is necessary to correct the reference plane A of the mold core, so the workload of calibration is large, resulting in low processing efficiency

Images