A kind of broach with imitated honeycomb microstructure and preparation method thereof
A technology of microstructure and honeycomb shape, which is applied in the field of broaches with imitation honeycomb microstructure and its preparation, which can solve the problems of slow heat dissipation and friction and wear at the tip of the blade teeth, so as to improve the service life and use efficiency, reduce the Effect of heat accumulation and tool protection
Active Publication Date: 2021-11-05
ZHEJIANG GONGSHANG UNIVERSITY
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Problems solved by technology
[0004] The present invention aims at the problem of severe friction and wear caused by the slow heat dissipation speed of the tip of the broaching teeth in the process of cutting difficult-to-machine materials, and provides a broach with a honeycomb-like microstructure and a preparation method thereof
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[0040] The present invention will be further described below in conjunction with the accompanying drawings.
[0041] Such as Picture 1-1 , 1-2 Shown in and 1-3, in the embodiment of the present invention, the broach with imitative honeycomb microstructure is a keyway broach, and the material adopts high-speed steel (W6Mo5Cr4V2). As a preferred embodiment, the specific size of the broach is: the total length is 600mm, tooth width b 1 is 16mm, the horizontal width of the flank b 2 is 2mm, and the number of teeth is 50. Rake angle of cutter teethγ 0 is 12°, relief angle α 0 is 6°, and the tooth pitch p is 6mm. As a preferred embodiment, the first 40 teeth are rough drawing area X 1 , tooth lift δ in the rough drawing zone i 0.04mm, the 41st to 45th teeth are semi-finishing areas X 2 , tooth lift δ in the semi-finishing zone i 0.01mm, the 46th to 50th tooth is the fine drawing area X 3 , tooth lift δ in the finishing area i is 0mm. Tooth including rake face A 1 , Bla...
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Abstract
The invention discloses a broach with imitation honeycomb microstructure and a preparation method thereof. When the existing broaching cutter teeth are cutting difficult-to-machine materials, the heat dissipation speed of the tip of the cutter teeth is relatively slow, and the friction and wear are serious. In the present invention, in the rough-drawing zone and the semi-fine-drawing zone, m rows×n columns of imitation honeycomb microstructures arranged in a parallelogram are arranged on the two sides of each cutter tooth in the rough drawing area and the semi-finishing area; the imitation honeycomb microstructure is provided with composite pits , cylindrical protrusions and silica gel fillers; cylindrical protrusions are integrally formed with the side of the cutter tooth; the compound pit is composed of a regular hexagonal pit and a regular quadrilateral pit whose central axis coincides; between the compound pit and the cylindrical protrusion The gaps are filled with silicone fillers; the bottom of the silicone filler is bonded to the bottom of the composite pit by silicone thermal vulcanization adhesive. The invention optimizes the heat dissipation and vibration suppression performance of the broach, and achieves the purposes of protecting the cutter, reducing the wear of the broach, and improving the service life and use efficiency of the broach.
Description
technical field [0001] The invention belongs to the technical field of cutting tools, and in particular relates to a broach with a honeycomb-like microstructure and a preparation method thereof. Background technique [0002] Because of its high processing accuracy and processing efficiency, broaching is widely used in the processing and preparation of high-precision parts in the fields of aerospace, automobiles and ships. But at this stage, when the broach is broaching, it often produces high broaching temperature and broaching vibration, which greatly affects the accuracy of broaching and the service life of broaching, increasing the safety of broaching Hidden danger. Therefore, for broaching, it is of great significance to develop a new type of broach that can reduce broaching temperature, reduce broaching vibration, and improve service life for the development of broaching tool industry. [0003] At present, there are few studies on the development and preparation of br...
Claims
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IPC IPC(8): B23D43/00B23P15/42
CPCB23D43/00B23P15/42
Inventor 彭丽辉胡致远米慧迎冯熠娜
Owner ZHEJIANG GONGSHANG UNIVERSITY