Preparation method of cutter surface antisticking antifriction micro mosaic composite texture

A composite weaving and micro-texturing technology, applied in the field of mechanical cutting tool manufacturing, can solve the problems of electrode wear and deformation, difficult to control the processing shape effectively, reduce friction, realize high-efficiency CNC machining, improve mold life and form Piece quality effect

Inactive Publication Date: 2013-05-22
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the electrode is prone to loss and deformation during the EDM...

Method used

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  • Preparation method of cutter surface antisticking antifriction micro mosaic composite texture
  • Preparation method of cutter surface antisticking antifriction micro mosaic composite texture
  • Preparation method of cutter surface antisticking antifriction micro mosaic composite texture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The ideal surface microcavity / microgroove texture is obtained by laser micromachining on the rake face of the high-speed steel cutting tool material, as follows figure 2 , image 3 shown. The laser wavelength used in the microcavity processing is 532nm, the current is 17 amperes, the number of pulses is 3 times, the repetition frequency is 1900Hz, and the nitrogen pressure is 0.15MPa. The laser wavelength used in the microgroove processing is 532nm, the current is 17 amperes, the scanning speed is 10mm / s, the repetition frequency is 2500Hz, and the nitrogen pressure is 0.15MPa. After ultrasonic cleaning, the dimensions of microcavity and microgroove measured by VYKO morphology instrument are as follows: Figure 4 and Figure 5 As shown, it shows that the micro-texture processing quality is good, which creates good conditions for the embedding of solid lubricants. Through uniform mixing-powder drying-surface pretreatment-press filling solidified lubricant-surface po...

Embodiment 2

[0043] Through laser micromachining on the rake face of YT15 cemented carbide tool material, the surface texture obtained is as follows: Figure 10 shown. The laser wavelength used in the microcavity processing is 532nm, the current is 17 amperes, the number of pulses is 4 times, the repetition frequency is 1900Hz, and the nitrogen pressure is 0.15MPa. After ultrasonic cleaning, the microcavity size measured by VYKO morphology instrument is as follows: Figure 11 shown. Hard textured bumps about 2 microns high formed around the cavity. Through uniform mixing-powder drying-surface pretreatment-press filling solidified lubricant-surface post-treatment and other processes, the solid lubricant can be uniformly filled and pressed, and the embedded filling effect can be achieved. Figure 12 As shown, the lubricant in the microcavity is basically flush with the surface of the specimen, indicating that the embedding effect is good.

Embodiment 3

[0045] By laser micromachining the rake face of titanium nitride-coated tool material, the surface texture such as Figure 13 shown. The laser wavelength used in the microcavity processing is 532nm, the current is 17 amperes, the number of pulses is 6 times, the repetition frequency is 1900Hz, and the nitrogen pressure is 0.15MPa. After ultrasonic cleaning, the microcavity size measured by VYKO morphology instrument is as follows: Figure 14 shown. Due to the coating, no wear-resistant textured bumps were produced around the cavities. Therefore, the tool surface roughening and microcavity / groove composite texture treatment can be carried out before the tool is coated. The composite texture processing before coating can improve the efficiency of laser micromachining. The method of texture first and then coating can effectively prevent the side effect of laser processing on the tool coating, and can improve the wear resistance of the textured convex surface. Then through un...

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Abstract

The invention discloses a preparation method of a cutter surface antisticking antifriction micro mosaic composite texture and belongs to the technical field of mechanical cutting tool manufacture. The preparation method comprises the steps of carrying out texturing overlaid and microcavity/groove composite texture processing on the working surface of a cutter by using laser, and filling solid lubricant into the microcavity/groove texture of the cutter surface in a pressed and embedded mode. The preparation method of the cutter surface antisticking antifriction micro mosaic composite texture overcomes monotony of the existing cutter texture method, improves aintisticking performance of the front cutter surface of the cutter, preventing generation of a built-up edge, performs the function of storing and conveying of the texturing overlaid and microcavity/groove composite texture on cutting fluid, performs cooling and lubrication action on the cutter and achieves the purposes of improving durability and cutting efficiency of the cutter and ensuring machining quality of a workpiece surface.

Description

technical field [0001] The invention relates to the technical field of mechanical cutting tool manufacturing, in particular to a tool surface anti-sticking and anti-friction micro-inlaid composite texture and its preparation method, which are used to solve the problem of tool durability and cutting in the process of high-speed cutting, dry cutting and difficult-to-machine materials processing. The problem of low efficiency. Background technique [0002] In the process of metal cutting, the severe friction between the tool and the workpiece and the chip and the joint action with the cutting heat will cause tool wear and reduce the processing quality. Especially for difficult-to-machine materials, such as titanium alloys, high-temperature alloys, ultra-high-strength steels, etc., and under dry cutting conditions, rapid tool wear has become a key problem restricting the further improvement of cutting efficiency. The research shows that the surface texture of the tool has a ver...

Claims

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Application Information

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IPC IPC(8): B23P15/28
Inventor 华希俊
Owner JIANGSU UNIV
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