Compound die used for double-slot-hole workpiece

Abstract

The invention relates to a compound die used for a double-slot-hole workpiece. The compound die comprises an upper die base and a lower die base which are installed oppositely, two punches are arranged at the bottom of the upper die base in a spaced mode, a concave die is arranged on the lower die base, two through holes are formed in the positions, under the two punches, of the concave die, and the two punches and guide sleeves are fixed to the upper die base through epoxy resin; each punch comprises a guide part and a working part, wherein the guide part is arranged below the working part, the guide part is a conical part, and an alloy ring is arranged on the periphery of the working front end face of the working part and made of a low-nickel-chromium-molybdenum alloy. Double holes are formed through once punching, the production efficiency is improved, the center distance between the two holes is ensured, and the machining quality of the workpiece is ensured; the guide sleeves and the two punches are fixed through the epoxy resin, machining of the die is greatly simplified, and the manufacturing cost of the die is reduced; due to the structural design of the punches, the punching service life of the punches is prolonged, and the accuracy and the quality of the punched holes are improved.

Description

technical field [0001] The invention relates to a composite mold, in particular to a composite mold for a workpiece with double long holes. Background technique [0002] The double long hole workpiece is a commonly used part in the belt conveyor. During the production process, it is processed in two punching processes. This production method is not only high in cost, low in efficiency, but also time-consuming and laborious. The error of the center distance between the two holes is also very large. Large, it is difficult to guarantee the processing quality. In addition, the punches commonly used in the industry have been rubbing against the steel parts during use, resulting in wear and tear, resulting in the size of the processed holes changing all the time, and the accuracy is not guaranteed. , and the situation of wear and tear failure also occurs frequently. If it is necessary to process holes with relatively high precision requirements, the punches need to be replaced fr...

AI Technical Summary

Problems solved by technology

[0002] The double long hole workpiece is a commonly used part in the belt conveyor. During the production process, it is processed in two punching processes. This production method is not only high in cost, low in efficiency, but also time-consuming and laborious. The error of the center distance between the two holes is also very large. Large, it is difficult to guarantee the processing quality. In addition, the punches commonly used in the industry have been rubbing against the steel parts during use, resulting in wear and tear, resulting in the size of the processed holes changing all the time, and the accuracy is not guaranteed. , wear and tear failure occurs frequently

If you need to process holes with high precision requirements, you need to replace the punch frequently, which wastes time and labor and reduces production efficiency.

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