A production process of 90° soft copper bar without NC processing

Abstract

A production process of a 90° flexible copper bar without NC processing, including the following steps: Step 1: Cutting the material and stacking the copper foil neatly to obtain a semi-finished product 1; Step 2: Aligning one end of the semi-finished product 1 and performing diffusion welding to obtain Semi-finished product 2; step 3: bend the middle part of semi-finished product 2 by 90° to obtain semi-finished product 3; step 4: align the other ends of semi-finished product 3 and conduct diffusion welding to obtain semi-finished product 4; step 5: punch one end of semi-finished product 4 Form a round joint with a square hole, and punch the other end into a round joint with a round hole to obtain a semi-finished product 5; Step 6: put a heat shrinkable tube on the middle of the semi-finished product 5 to obtain a finished product. Compared with the traditional process of bending 90°, the present invention requires edge clamping and NC processing after diffusion welding. The present invention can stack the copper foils with the same length of punching die, and divide them into two steps of diffusion welding and two steps of punching. The operation is simple, the efficiency is high, the yield rate increases, the loss of copper foil is small, and the cost is relatively reduced.

Description

technical field [0001] The invention belongs to the technical field of soft copper bar production, and in particular relates to a production process of a 90° soft copper bar without NC processing. Background technique [0002] There is a 90°bent flexible copper bar for new energy vehicles, with a thickness of about 5mm, such as figure 1 shown. In the production and processing of the soft copper bar using the traditional process, since the soft copper bar has to be bent into 90°, the inner and outer R angles will be different, which will cause the length of the inner and outer copper foil to gradually change; the traditional manufacturing process generally adopts Gradient cutting copper foil stacking needs to be bent at 90° while ensuring that the two ends are just aligned. After the two ends are aligned, diffusion welding is performed, and then the periphery is processed into an L shape by NC milling, and then the hole is milled by NC, and finally put on the heat shrinkable...

AI Technical Summary

Problems solved by technology

[0003] However, using the traditional process to produce the soft copper bar requires a very expensive tapered length cutting machine, and it is also difficult to bend and clamp the edges, resulting in low efficiency and low yield; moreover, the loss of copper foil is large and the utilization rate is low. High cost; the traditional process is relatively complicated, and the output is relatively small

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