Push-type broach

Abstract

A push-type broach is used for processing quadrilateral holes or quadrilateral grooves. The push-type broach comprises a handle portion and a cutting portion, wherein the cutting portion comprises more than one gear pair, the gear pair comprises a first gear and a second gear which are arranged adjacent, two opposite sides of the first gear respectively form a first cutting blade, two opposite sides, stagger with the first cutting blades, of the second gear from a second cutting blade, the first cutting blades and the second cutting blades are respectively formed on different gears of the gear pair, no interference is caused between different cutting blades, and therefore forming of the first cutting blades and the second cutting blades is facilitated, and production cost of the push-type broach is reduced.

Description

technical field [0001] The invention relates to a knife, in particular to a push knife. Background technique [0002] The cutting edges of traditional push knives used to process rectangular holes are formed on the same tooth, and adjacent cutting edges overlap each other. As the structure of electronic products becomes smaller and lighter, the cutting edge used to process rectangular holes The size of the push knife is getting smaller and smaller, because the size of the push knife is too small, the overlapping area between adjacent cutting edges is difficult to process, which increases the manufacturing cost of the push knife. Contents of the invention [0003] In view of the above situation, it is necessary to provide a push knife that reduces the manufacturing cost by changing the arrangement of the cutting edge. [0004] A push knife, which is used for machining quadrangular holes or quadrangular grooves, includes a handle and a cutting portion, the cutting portion i...

AI Technical Summary

Problems solved by technology

[0002] The cutting edges of traditional push knives for machining rectangular holes are formed on the same tooth, and adjacent cutting edges overlap each other. As the structure of electronic products becomes smaller and thinner, the cutting edge for machining rectangular holes The size of the push knife is getting smaller and smaller, because the size of the push knife is too small, the overlapping area between adjacent cutting edges is difficult to process, which increases the manufacturing cost of the push knife

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