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Cobweb-like microstructure broach with gradient wetted surface and preparation method thereof

A surface gradient and microstructure technology, applied in broaching, broaching, manufacturing tools, etc., can solve the problems of waste, poor wetting performance of cutting fluid, etc., and achieve the effect of improving service life, improving wettability, and protecting tools

Active Publication Date: 2020-06-05
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems of severe extrusion, friction and abrasion between the rake face of the cutter tooth and the chip in the broaching process of the existing broach, poor wetting performance of the cutting fluid, serious waste, etc. Inspired by droplets, a broaches with rake surface imitating spider web microstructure and its preparation method are provided with the function of directional delivery of liquid droplets

Method used

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  • Cobweb-like microstructure broach with gradient wetted surface and preparation method thereof
  • Cobweb-like microstructure broach with gradient wetted surface and preparation method thereof
  • Cobweb-like microstructure broach with gradient wetted surface and preparation method thereof

Examples

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Embodiment 1

[0040] Such as figure 1 , 2As shown in and 3, a broach with a surface gradient wetting imitation spider web microstructure includes a tool base 1 and a tooth block 2. The cutter body of the cutter base 1 is provided with cutter tooth installation slots. The cutter block 2 is fixed in the cutter tooth installation groove on the cutter base 1 by two bolts 3 . The total length of the cutter base 1 is 400mm, and the width is 16mm; the cutter block 2 is provided with broach cutter teeth. The broach teeth are located between the two bolts 3 . The tooth width b1 of the broach tooth is 16mm, the rake face width b2 is 2mm, the rake angle γ0 of the knife tooth is 12°, and the relief angle α0 is 6°. The broach tooth is provided with a rake face A1, a blade A2 and a flank face A3.

[0041] Such as figure 2 , 4 and 5; the rake face A of the broach tooth 1 A spider web-like microstructure is provided on the top; the spider-web microstructure includes m transverse grooves and n long...

Embodiment 2

[0061] The difference between this embodiment and Embodiment 1 lies in that: a plurality of cutter tooth installation slots are opened on the cutter base body, and a plurality of cutter tooth blocks are installed.

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Abstract

The invention discloses a cobweb-like microstructure broach with a gradient wetted surface and a preparation method thereof. Researches show that some microstructures with specific shapes are formed on the surface of the material, so that the effect of improving the hydrophobicity or hydrophilicity of the material can be achieved. The cobweb-like microstructure broach with high wettability comprises a cutter base body and cutter tooth blocks. One or more cutter tooth blocks are installed on the cutter base body. Broach teeth are arranged on the cutter tooth blocks. Cobweb-like microstructure is arranged on the front cutter face of the broach teeth; and the cobweb-like microstructure comprises m transverse grooves and n longitudinal grooves. The m transverse grooves and the n longitudinal grooves are staggered to form a grid shape. Each intersection point is provided with a node pit. Hydrophilic fiber strips are arranged in the m transverse grooves and the n longitudinal grooves. According to the cobweb-like microstructure broach, the cobweb-like microstructure is formed in the front cutter face of the broach and carbon fibers are combined, the wettability of the surfaces of the cutter teeth is improved, the cutting load is reduced, and the effects of reducing abrasion of the broach and prolonging the service life of the broach are achieved.

Description

technical field [0001] The invention belongs to the technical field of cutter surfaces, and in particular relates to a broach with imitation spider web microstructure capable of directional delivery of liquid droplets and a preparation method thereof. Background technique [0002] The broach is a forming tool widely used in the machining of turbine tongue and groove discs in the aerospace field, with the advantages of high efficiency and high precision. In the broaching process, the broach often needs to be used with a large amount of cutting fluid to reduce the broaching load and the generated cutting heat. However, due to the special shape of the broach, during the process of spraying cutting fluid, the cutting fluid will slide into the chip pocket along the inclined rake face, which not only causes the waste of cutting fluid, but also causes serious broaching. The reduction of the cutting accuracy will lead to the failure of the machining of the turbine tongue and groove...

Claims

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Application Information

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IPC IPC(8): B23D43/00B23K26/364B23P15/42B29C65/48
CPCB23D43/00B23P15/42B29C65/48B23K26/364
Inventor 蒙臻付治波吕俊杰秦威倪敬韦一凡朱翔俊
Owner HANGZHOU DIANZI UNIV
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