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Method for prolonging service life of twist drill based on heat pipe phase changes

A twist drill and heat pipe technology, applied in twist drills, repair drills, drilling tool accessories, etc., can solve problems such as patents that have not yet been seen, and achieve the effects of reducing manufacturing costs, cutting temperature, and high heat transfer efficiency

Inactive Publication Date: 2014-01-29
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, heat pipe technology has been applied to a certain extent in the fields of turning and grinding, but in the field of drilling, so far, no patents have been seen.

Method used

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  • Method for prolonging service life of twist drill based on heat pipe phase changes
  • Method for prolonging service life of twist drill based on heat pipe phase changes
  • Method for prolonging service life of twist drill based on heat pipe phase changes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as image 3Shown, the schematic diagram of the wear state of the twist drill flank under different service conditions, wherein: the diameter of the twist drill used in the experimental measurement is 3mm; CF-Block (1-3) represents respectively: when using cutting fluid, the twist drill of the present invention Schematic diagram of the wear condition of the cutter face; HF-Block (1-3) represents respectively: when using the heat pipe 1, the schematic diagram of the wear condition of the flank of the twist drill of the present invention; Block (1-3) represents: 3 pieces of workpieces used in the experimental measurement .

[0039] The measurement results show that under the same processing conditions, the flank wear of the twist drill using heat pipe 1 is lighter than that of the twist drill using cutting fluid.

[0040] In addition, the cutting fluid used in this experiment is the cutting oil commonly used in the manufacturing industry.

Embodiment 2

[0042] Such as Figure 4 As shown, the schematic diagram of the service life of the twist drill under different conditions of use, in which: the diameter of the twist drill used in the experimental measurement is 10mm; SD means: the situation without using cutting fluid and heat pipe 1; CF means: the situation using cutting fluid; HF means: The case of using heat pipe 1.

[0043] The measurement results show that: under the same processing conditions, the life of the twist drill cooled by the heat pipe 1 is longer than that of the twist drill using cutting fluid.

[0044] In addition, the cutting fluid used in this experiment is the cutting oil commonly used in the manufacturing industry.

Embodiment 3

[0046] Such as Figure 5 As shown, the schematic diagram of the twist drill processing temperature changing with time under different conditions of use, where: the diameter of the twist drill used in the experimental measurement is 20mm; SD means: the situation without using cutting fluid and heat pipe 1; CF means: the situation using cutting fluid; HF means: the case of using heat pipe 1; the subscripts 1 and 2 respectively indicate the number of twist drills under different cooling conditions.

[0047] The measurement results show that: under the same processing conditions, the temperature of the cutting part of the twist drill when the heat pipe 1 is used for cooling is lower than that of the cutting part of the twist drill when the cutting fluid is used.

[0048] In addition, the cutting fluid used in this experiment is the cutting oil commonly used in the manufacturing industry.

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Abstract

The invention discloses an environment-friendly method for prolonging the service life of a twist drill based on heat pipe phase changes, so durability of a standard twist drill with a straight shank can be remarkably improved under a drilling especial for high-speed drilling machining condition. According to the method, a heat pipe theory and technology are brought in, heat pipe phase change heat transfer characteristics are made use of, cutting fluid is not adopted, and the cutting temperature of the main cutting edge and the cutting temperature of the chisel edge part of the twist drill are rapidly lowered with the help of a heat pipe to reduce the abrasion rate of the main cutting edge and the chisel edge part of the twist drill so that the purpose of prolonging the service life of the twist drill is achieved. Heat pipe phase change heat transferring is adopted in the method, so the heat pipe is higher than cutting fluid in heat transfer efficiency; the heat pipe technology is adopted, so the heat pipe is more environment-friendly than cutting fluid, and personal injuries to operation staff do not exist. In addition, the heat pipe adopted in the method is cheaper than the cutting fluid in market price, and therefore manufacturing cost of products of enterprises can be reduced.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a method for improving the service life of a twist drill based on the phase transition of a heat pipe. Background technique [0002] In the machining industry, cutting heat has always been a problem that people generally care about, and it is also a key technology that enterprises need to solve urgently. Cutting process produces a lot of cutting heat, and a large amount of cutting heat is transmitted to the tool, resulting in an increase in the temperature of the cutting part of the tool. Excessive cutting temperature will accelerate tool wear, such as diffusion wear, adhesive wear and chemical wear, thereby reducing tool durability and causing tool failure early. [0003] Drilling is a semi-closed process. When cutting, the twist drill performs both the main movement and the feed movement, thus generating a lot of cutting heat and not easy to dissipate. In this way, a larg...

Claims

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Application Information

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IPC IPC(8): B23B51/02B23B51/06
CPCB23B51/02B23B51/06
Inventor 朱林尹成龙任天健彭双双程曦方梁菲
Owner ANHUI AGRICULTURAL UNIVERSITY
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