Push-type broach

A cutting edge and quadrilateral technology, applied in the field of push knives, can solve the problems of increasing the manufacturing cost of push knives, difficult machining, etc.

Inactive Publication Date: 2013-06-19
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Push-type broach
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Examples

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Embodiment Construction

[0013] The push knife according to the embodiment of the present invention will be further described in detail below with reference to the specific implementation method and the accompanying drawings.

[0014] A push knife according to an embodiment of the present invention is used for finishing a prefabricated hole in a metal substrate. When processing a hole on a metal substrate, the prefabricated hole is first stamped on the metal substrate by a drill bit and other equipment. At this time, the inner surface of the prefabricated hole is rough and its aperture is smaller than that of the subsequent hole processed by a push knife. The push knife finishes the prefabricated hole to remove the machining allowance, and finally processes a hole with a smooth surface and a predetermined size and shape.

[0015] see figure 1 and figure 2 , the push tool 100 according to the embodiment of the present invention is used to process the hole 12 on the aluminum alloy workpiece 10 . The...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23D43/00
CPCB23D43/02Y10T407/16Y10T407/1671
Inventor 徐文武
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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