Dual-layer rolled lining and processing technology thereof

Abstract

The invention discloses a dual-layer rolled lining. The dual-layer rolled lining comprises an inner layer and an outer layer which are in mutual meshed riveting, the inner layer is formed by curling first sheets, one end of each first sheet is provided with a first hasp, the other end of each first sheet is correspondingly provided with a first slot, and multiple riveting hols are formed in the vertical center line of the first sheets at intervals; the outer layer is formed by curling second sheets, one end of each second sheet is provided with a second hasp, the other end of each second sheetis correspondingly provided with a second slot, and the first sheets are riveted to the vertical center line of the first sheets through the riveting holes. According to the dual-layer rolled lining,the inner-and-outer dual-layer mechanisms are adopted for replacing the single-layer structure, the processing difficulty is lowered on the premise that the product performance is ensured, and the processing cost is lowered.

Description

technical field [0001] The invention relates to the field of rolled bushes, in particular to a double-layer rolled bush and its processing technology. Background technique [0002] In the production and assembly of auto parts, the shell is one of the most important parts, and the bushing product is one of the very important shell forms. The bushings are produced in large quantities and have various structural forms, and There are many forms of bushing processing technology, and there are three main existing mainstream processing technologies, including metal cutting, stretch stamping and coil stamping. Among them, the main raw material for metal cutting is seamless steel pipe, and the process is more complicated, involving the processing technology of turning shape, boring inner hole, milling notch, grinding end face and cutting. The advantage is high precision, but the production efficiency is not high and the cost is relatively high. high. Stretching stamping technology ...

AI Technical Summary

Problems solved by technology

[0003] Based on the advantages and disadvantages of the above processing technology, rolling stamping is the most commonly used processing method in bushing processing. However, with the increase of bushing varieties, the thickness requirements of bushings are also gradually increasing. However, due to the needs of rolling stamping equipment Technical parameters and process capabilities have different applicability to the processing thickness of the product. The punching force of the existing production equipment is generally around 40t, and can only process products with a thickness of 1.5mm to 2mm. For some thicker bushings (thickness up to 3.5 mm or more), the processing of this process cannot be realized, and only the first two processing methods with low efficiency or high cost can be used.

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