A processing tool and processing method for automatically reducing the shape and position deviation of shock absorbing block castings

Abstract

The invention discloses a processing tool for automatically reducing shape and position deviation of a damping block casting. The processing tool comprises a ductile iron plate and a positioning block, wherein a first cylindrical shaft hole, a second cylindrical shaft hole, a third cylindrical shaft hole and a fourth cylindrical shaft hole are sequentially formed from the end surface of one innerside to the end surface of the other inner side of the ductile iron plate; the positioning block comprises a positioning rod and a positioning head; the positioning head comprises a first cylindricallimiting column, a second cylindrical limiting column and a limiting bump; a cover plate is mounted in the second shaft hole; one end of the positioning rod penetrates the through hole, and the otherend of the positioning rod is fixedly connected to the first limiting cylinder; a returning spring is arranged between the first limiting cylinder and the cover plate; at least three positioning holesare formed in the end surface, far away from the first shaft hole, of the ductile iron plate; and columns with the same height are arranged in the positioning holes. The invention also discloses a processing method automatically reducing shape and position deviation of the damping block casting. With the adoption of the processing tool and the processing method, the casting processing accuracy and quality can be ensured; the reworking and rejecting rate of the casting is decreased from 26% to 0.5%.

Description

technical field [0001] The invention relates to the technical field of processing tooling equipment, in particular to a processing tooling and a processing method for automatically reducing the shape and position deviation of shock-absorbing block castings. Background technique [0002] The car shock absorber is an indispensable accessory product in the car. In addition to the size control requirements, the automobile shock absorber also has high control requirements for the weight. Generally, the weight tolerance is required to be plus or minus 35g. In order to ensure the consistency of the automobile shock absorber castings, we generally use high-pressure horizontal automatic production lines to produce castings. , but the average amount of processing waste is still as high as 26%, and the economic loss is serious. [0003] The processing technology of the existing automobile shock absorber is as follows: the first process, use the extended three-grip car to process it in...

AI Technical Summary

Problems solved by technology

[0004] It can be seen from the above processing technology that due to the non-standard surface of the casting, especially the side of the casting, there are problems such as rough surface and small knots. The 94-degree side of the three-clamp shock absorber must be used to ensure that the small plane of the counterweight is close to the surface. The internal datum plane of the three grips is unreliable. When the side is clamped, the small plane of the shock absorber will deviate from the inner datum plane of the three grips due to the irregularity of the side, forming a virtual positioning phenomenon; practice has proved that after the large plane is processed, it will be consistent with the small plane of the casting. There is non-parallel phenomenon, which leads to serious unevenness of the inverted Φ179.4mm outer fillet after the large plane is processed. This problem leads to a problem with the coaxiality between the processed large plane and the casting blank, and the sinking in the next process The one-sided cutting of the concave side wall during the scraping process is also the key factor leading to the unequal weight of the castings, thus greatly increasing the amount of processing rejects

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