Measuring apparatus for abrasion loss of hot-core box positioning pins and positioning bushings

Abstract

The invention relates to a measuring apparatus for abrasion loss of hot-core box positioning pins and positioning bushings. The measuring apparatus comprises a moving die and a static die, each of the moving die and the static die is provided with a sand core cavity, a positioning pin is arranged at each of four corners of the moving die, four positioning bushings are arranged at the same positions of four corners of the static die respectively, and the positioning pins and the positioning bushings are just matched during die clamping; an abrasion loss measuring gauge is further arranged and matched with the positioning pins and the positioning sleeves, a protruding measuring column is arranged at the upper end of the gauge, the column is in the same shape as the hot-core box positioning pins, a pit measuring hole is arranged in the bottom end of the gauge, and the pit is identical to the static die positioning bushings in shape. When the moving die and the static die need to measure the positioning pins and the positioning bushings, the protruding measuring column of the gauge is directly used for measuring the positioning bushings, and the pit measuring hole of the gauge is used for measuring the positioning pins. Abrasion loss of the positioning pins and the positioning bushings can be detected, qualified rate of products is increased, the measuring apparatus is simple to operate and convenient to use, and defect rate of the products is lowered.

Description

technical field [0001] The invention relates to an inspection device for the wear amount of a positioning pin and a positioning sleeve, in particular to a measuring device for the wear amount of a positioning pin and a positioning sleeve of a hot core box. Background technique [0002] The production of auto parts requires a large number of sand cores. The sand cores are generally made of coated sand. During the manufacturing process, the wear of the positioning pins and positioning sleeves will cause loosening during mold closing, and the mismatch between the dynamic mold and the static mold will appear. , thus increasing the repair work, and even scrapping the sand core, reducing work efficiency. The existing method of detecting positioning pins and positioning sleeves is to use a vernier caliper to detect whether the wear exceeds 0.3mm. For detection, this method of operation is not only inconvenient to operate, but also laborious and laborious, and the inspection effici...

AI Technical Summary

Problems solved by technology

[0002] The production of auto parts requires a large number of sand cores. The sand cores are generally made of coated sand. During the manufacturing process, the wear of the positioning pins and positioning sleeves will cause loosening during mold closing, and the mismatch between the dynamic mold and the static mold will appear. , so as to increase the repair work, and even the sand core is scrapped, reducing work efficiency

The existing method of detecting positioning pins and positioning sleeves is to use a vernier caliper to detect whether the wear exceeds 0.3mm. For detection, this method of operation is not only inconvenient to operate, but also laborious and laborious, with low inspection efficiency, and requires high precision in caliper operation, which requires high skills for personnel, which reduces the accuracy of detection.

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