Tooth punching die for toothed plates of car seat angle regulator

Abstract

The invention discloses a tooth punching die for toothed plates of a car seat angle regulator. The tooth punching die for the toothed plates of the car seat angle regulator comprises a female die and a male die, wherein the male die comprises a guide block, a lower male die cushion block, an upper male die cushion block, N tooth punching die pieces and a plurality of distance pieces, wherein the N is a natural number between 6 and 11, a tooth die is arranged on each tooth punching die piece, the radiuses of root circles of the N tooth dies are the same, the radiuses of addendum circles of the N tooth dies gradually increase, the lower male die cushion block is installed on the guide block, the N tooth punching die pieces are sequentially overlapped on the lower male die cushion block from small to large according to the radiuses of the addendum circles of the tooth dies, each distance piece is placed between every two adjacent tooth punching die pieces, the tooth punching die piece with the smallest addendum circle makes contact with the lower male die cushion block, and the upper male die cushion block is installed on the tooth punching die piece with the largest tooth punching die piece. The tooth punching die can finish the tooth shape machining of the toothed plates through one-time punching motion, not only improves the forming efficiency of the toothed plates, but also improves the machining accuracy of the teeth on the toothed plates.

Description

Technical field [0001] The invention relates to a punching die, in particular to a punching die for a tooth plate of a car seat angle adjuster. Background technique [0002] The car seat angle adjuster generally includes two tooth plates, a large tooth plate and a small tooth plate. The meshing teeth of the large tooth plate and the small tooth plate are formed by punching molds, but the current punching molds such as figure 1 As shown, it includes a male mold and a female mold. The female mold is provided with a through cavity, and three sets of positioning parts are arranged around the through cavity for positioning the large tooth plate or the small tooth plate, and the convex mold includes three arcs The tooth groove depth of the three-segment arc-shaped tooth mold gradually deepens, so the same tooth plate needs to be placed on three sets of positioning parts in sequence, and the teeth are punched by the three-segment arc-shaped tooth mold in sequence. However, since the too...

AI Technical Summary

Problems solved by technology

However, since the tooth plate needs to be removed from one set of positioning parts and placed on another positioning part, the precision requirements are very high, especially the tooth shape of the first tooth die after punching must be consistent with that of the second tooth die. The tooth shape is completely matched, otherwise it will affect the shape of the tooth. Therefore, the requirements for the positioning accuracy of the positioning part, the tooth shape of the tooth plate after punching and the tooth shape of the subsequent tooth mold are very high, and waste products are prone to occur.

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