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Drill bit for machining aluminum and aluminum alloy

A technology of aluminum alloy and drill bits, which is applied in metal processing equipment, drill repairing, drilling tool accessories, etc., can solve the problems of limited cutting efficiency and low processing quality of high-strength aluminum and aluminum alloys, and achieve simple and practical grinding structure, The effect of increasing the effect and chip removal and reducing the production cost

Pending Publication Date: 2019-01-11
BEIJING NORTH VEHICLE GROUP CORP
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AI Technical Summary

Problems solved by technology

It also solves the problems of limited cutting efficiency and low processing quality of new materials such as high-strength aluminum and aluminum alloys

Method used

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  • Drill bit for machining aluminum and aluminum alloy
  • Drill bit for machining aluminum and aluminum alloy
  • Drill bit for machining aluminum and aluminum alloy

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Effect test

Embodiment Construction

[0018] A kind of drill bit for processing aluminum and aluminum alloy of the present invention belongs to the group drill bit. After a large amount of practical experience, it includes drill bit (chisel edge) tip height h, inner edge angle, length from outer edge to cutting edge, outer edge Angle, chisel edge width, and a series of parameters of back angle arc length are improved, and the following parameters can be obtained to solve the problems in the prior art.

[0019] The drill bit (chisel edge) point height h = 2.02mm, and the inner edge angle is 90°.

[0020] Increase the facet of the outer edge, the facet angle is 3, and the width of the facet is 2.7mm-2.9mm;

[0021] The small plane is processed near the outer edge of the main back, the small plane passes through the outer edge, the angle between the small plane and the chip plane (horizontal plane) is 3 degrees, and the small plane borders the main back, (the junction is approximately parallel to the outer edge ,) T...

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Abstract

The invention discloses a drill bit for machining aluminum and an aluminum alloy and belongs to the technical field of hole machining drill bits. The problem that in machining of special aluminum materials, tools are prone to being broken, chips are hard to remove, and cutting scrap tumors are generated are solved. The drill bit is a kind of gang drill bits. A series of parameters including the drill bit (a chisel edge) tip height h, the inner blade edge angle, the length from an outer blade to a cutting blade, the outer blade angle, the chisel edge width and the rear angle circular arc are improved, the problem that in the machining process, the cutting scrap tumors are generated and the hole ovality problem are effectively solved, and a polishing structure is simple and practical.

Description

technical field [0001] The invention belongs to the technical field of hole processing drills, and relates to a high-strength aluminum alloy drilling group drill. Background technique [0002] Hole processing is very common in the field of machining. Common hole processing technology is already very mature, but the use of cutting tools is currently mainly based on the group drilling technology designed by Ni Zhifu's team in 1953. With the continuous upgrading and optimization of technology, the improvement of vehicle exterior structure and some materials of vehicle body, aluminum and aluminum alloy plates are gradually developing towards high strength, high hardness and high quality. Yet for the cutting tool of processing aluminum and aluminum alloy, but not very high improvement and raising. At present, with the lag of tool improvement and the decline of employee skill level, the rate of drilling tool breakage is increasing year by year when processing aluminum and alumin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/00
CPCB23B51/00B23B2222/04B23B2251/18
Inventor 赵万敏金涛龚铮韩小丰杨洪浩武伟
Owner BEIJING NORTH VEHICLE GROUP CORP
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