Surface treatment process of PCD step chamfering cutter spiral chip groove
A technology of surface treatment and flute, which is applied in the surface treatment process of PCD step chamfering knife spiral chip flute, can solve the problems of a large amount of dust, delamination, tearing, and difficulty in guaranteeing processing quality, etc., to increase chip removal Smoothness, the effect of improving chip removal speed
Inactive Publication Date: 2019-07-02
SUZHOU SHANDE PRECISION TOOLS
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Problems solved by technology
[0002] Carbon fiber composite material is an emerging material composed of carbon fiber as a reinforcing material and resin as a matrix. It has the advantages of high specific strength, high specific modulus, shock resistance, and low thermal expansion coefficient. It has become the four major aerospace structural materials after aluminum, steel, and titanium. One, but its brittleness is high, under the acti
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[0016] The PCD step chamfering knife spiral chip flute surface treatment process uses a grinding wheel to grind the surface of the turned spiral chip flute so that the surface roughness reaches Ra 0.001~0.0005μm; then, the surface of the chip flute is treated three times EDM finishing, in which the first time is coarse discharge, the second time is fine discharge, and the third time is ultra-fine discharge, wherein the discharge gap of coarse discharge is set to 0.005mm ~ 0.015mm, and the feed rate is set to 0~0.005mm, the discharge gap of fine discharge is set to 0.002~0.006mm, the feed rate is set to 0.01mm~0.05mm, the discharge gap of ultra-fine discharge is set to 0.001mm~0.005mm, the feed rate is set to 0.005mm to 0.01mm.
[0017] The following is a set of optimal data. Use the parameters in the table below to process the surface of the flute with a flute length of 30mm and a helix angle within 20° to achieve a mirror effect.
[0018]
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Abstract
The invention provides a surface treatment process of a PCD step chamfering cutter spiral chip groove in order to solve the technical problems that the surface smoothness of the existing PCD step chamfering cutter spiral chip groove cannot meet the discharging speed of dust generated in the carbon fiber processing process. The surface treatment process comprises the specific steps: the surface ofthe turned spiral chip groove is polished through an abrasion wheel, and thus the surface roughness Ra of the spiral chip groove reaches 0.001-0.0005 [mu]m; and then, the surface of the chip groove issubjected to three-time discharge fine machining. The outer surface of a PCD step chamfering cutter is treated through a three-time discharge technology, thus the surface of the chip groove reaches the mirror surface degree, the chip removal smoothness of the chip groove is improved, and the chip removal speed of the PCD step chamfering cutter is increased.
Description
technical field [0001] The invention relates to the technical field of CNC cutting tools, in particular to the surface treatment process of the PCD step chamfering knife spiral chip flute. Background technique [0002] Carbon fiber composite material is an emerging material composed of carbon fiber as a reinforcing material and resin as a matrix. It has the advantages of high specific strength, high specific modulus, shock resistance, and low thermal expansion coefficient. It has become the four major aerospace structural materials after aluminum, steel, and titanium. One of them, but its brittleness is high, and under the action of cutting force, it is easy to produce defects such as delamination and tearing, and a large amount of dust will be generated when drilling. The chip removal groove of the existing PCD step chamfering knife is ground with a grinding wheel, and its surface finish cannot meet the requirements of the dust discharge speed during the processing of carbo...
Claims
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Login to View More IPC IPC(8): B23H9/00B23H1/00
CPCB23H1/00B23H9/00
Inventor 张志红
Owner SUZHOU SHANDE PRECISION TOOLS