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Machining method of precise and fine graphite electrodes by using diamond coated cutting tool

A technology of diamond film and graphite electrode, which is applied in the direction of stone processing tools, stone processing equipment, manufacturing tools, etc., to achieve the effects of high tool life, reduced electrode chipping, and reduced tool loss

Active Publication Date: 2012-05-09
硕昌(浙江)精密塑料制品有限公司
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Problems solved by technology

Table 1 Properties of diamond film-coated tools

Method used

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  • Machining method of precise and fine graphite electrodes by using diamond coated cutting tool
  • Machining method of precise and fine graphite electrodes by using diamond coated cutting tool
  • Machining method of precise and fine graphite electrodes by using diamond coated cutting tool

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Embodiment Construction

[0015] Below in conjunction with embodiment the present invention is described in further detail:

[0016] The processing method of the fine and small graphite electrode by the diamond film coating tool includes: (1) sharpening the diamond film coating tool so that the surface quality of the tool reaches the optimum value; (2) according to the diamond film coating tool Cutting performance, in order to obtain the best high-speed processing parameters of graphite electrodes; (3) For 24 pillars with a height of 10.mm, a length of 1.03-1.11mm, and a width of 0.37-0.52mm, the distance between the pillars is 4.03mm, and the following parameters are used for processing, Combined with centralized one-point oil injection to reduce the brittleness of the graphite surface, reduce tool loss, and avoid graphite cracking.

[0017] knife number

[0018] The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made ...

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Abstract

The invention relates to a method for machining precise and fine graphite electrodes by using a diamond film coated tool, comprising the following steps: (1) carrying out cutter sharpening on the diamond film coated cutting tool to obtain an optimum value of surface quality of the cutting tool; (2) acquiring optimum high-speed machining parameters of the graphite electrodes according to cutting property of the diamond film coated cutting tool; and (3) adopting layering rough machining and coordinating with centralized oil injection to reduce cracking, wherein allowance of 0.2-0.25mm is reserved at each single side; and then carrying out finish machining to remove single-sided allowance. The machining method effectively solves the problems of easy wear of the tool, easy edge chipping of the electrodes and slow machining speed while machining the graphite electrodes, and gives full play to maximum high speed performance of a high-speed machine; and compared with a hard alloy tool, by adopting the diamond coated cutting tool of the invention, machining efficiency is improved by 30%, service life is prolonged 3 times, unit machining cost is lowered by 20%, and manufacturing period of a die is greatly shortened.

Description

technical field [0001] The invention relates to a method for processing precision fine graphite electrodes with a diamond film coating tool. Background technique [0002] In the known milling of graphite in high-speed CNC centers with cemented carbide tools, the tool wear is very serious, which greatly restricts the precision of high-precision digital processing of expensive high-speed CNC centers, thus greatly affecting the efficiency and quality of precision electrode processing. Impact. [0003] According to the practice of K.Kanda in Japan, the use of diamond-coated ball-end cutters to mill graphite at a speed of 6000r / min is 10 times longer than that of cemented carbide cutters. Domestic research shows that the diamond film deposited on the surface of the tool has a rough surface, and appropriately reducing the surface roughness is very conducive to improving the quality of the tool. Therefore, the use of diamond tools to mill graphite in high-speed CNC centers has be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28D1/00
Inventor 张泰
Owner 硕昌(浙江)精密塑料制品有限公司
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