PCD tool cutting edge processing method

A processing method and cutting tool technology, which are applied in the accessories of tool holders, metal processing equipment, and cutting tools for lathes, etc., can solve the problems of difficult grinding, expensive grinding wheels, and high hardness of PCD materials, so as to improve cutting edge processing The effect of speed, shortened production cycle, and shortened processing cycle

Active Publication Date: 2015-03-25
深圳章源精密工具技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sharpening wheels used in the manufacture of PCD tool edges are relatively expensive, and the PCD material is high in hardness and difficult to grind, which undoubtedly brings high costs to PCD tool processing; The defect is serious. Even if the processing technology is strictly controlled, the size of the chip is ≥10 μm, and the surface damage of the composite sheet by EDM is relatively light, and the surface is relatively smooth, which has a great impact on the internal structure. After processing, the tool is prone to various use defects.
[0006] Therefore, the PCD cutting edge can no longer meet the use requirements using the traditional process, and a new processing technology is urgently needed to process the PCD cutting edge, reduce the chipping of the cutting edge after processing, and reduce the structural defects caused by internal processing of the cutting edge.

Method used

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  • PCD tool cutting edge processing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of processing method of PCD cutter edge, comprises the following steps:

[0032] 1) Cut a whole piece of PCD composite sheet with a diameter of 76.00mm by wire-cutting slow-moving method, and cut it into several PCD blades of 3.5*12mm according to the requirements.

[0033] 2) Blade welding: place the PCD blade in a vacuum drying oven at 450°C for 1 hour, then take out the PCD blade, and use a high-frequency induction welding machine to weld the PCD blade to the WC / Co cemented carbide, and then weld the PCD blade to the WC / Co cemented carbide. The tool was slowly cooled to room temperature to obtain a PCD tool.

[0034] 3) Edge treatment of the PCD cutter: According to the design requirements of the cutter shape, the PCD cutter is laser cut by a laser cutting device to obtain a PCD cutter with a smooth cutting edge. Among them, the processing parameters of the laser cutting process are: laser power 40%, laser width 0.1mm, laser taper 0°, line speed 50mm / min, cut...

Embodiment 2

[0037] The characteristics of this embodiment are: the processing parameters of the laser cutting process are: laser power 50%, laser width 0.1mm, laser taper 0°, linear speed 100mm / min, cutting step distance 0.05mm, cutting depth 0.01mm. Others are the same as in Example 1.

Embodiment 3

[0039] The characteristics of this embodiment are: the processing parameters of the laser cutting process are: laser power 60%, laser width 0.2mm, laser taper 0°, linear speed 100mm / min, cutting step distance 0.05mm, cutting depth 0.05mm. Others are the same as in Example 1.

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Abstract

The invention discloses a PCD tool cutting edge processing method which includes the following steps that firstly, PCD composite piece cutting is conducted, wherein a linear cutting method is used for cutting the whole PCD composite piece into a plurality of PDC blades; secondly, blade welding is conducted, wherein the PCD blades are welded to a tool base body, and a PCD tool is obtained; thirdly, a cutting edge of the PCD tool is processed, wherein laser cutting processing is conducted on the PCD tool through a laser cutting device according to the design requirement of the shape of the tool, and the PCD tool with a flat cutting edge is obtained. The PCD tool cutting edge processing method improves the processing rate of the cutting edge of PCD tool materials, shortens the production cycle of the tool, reduces the processing cost of the PCD tool and obtains the good quality of the cutting edge of the PCD tool, according to the PCD tool processed through the laser cutting of the cutting edge, the breaking size of the cutting edge can be controlled within 2 microns in length and 2 microns in width, the breaking number is small, and the number of broken edges in the range of 10 mm is smaller than or equal to 5.

Description

technical field [0001] The invention relates to a method for processing the cutting edge of a PCD tool, which belongs to the field of superhard material processing. Background technique [0002] PCD cutter is a cutter made by welding PCD composite sheet to carbide or steel cutter body. Since the PCD composite sheet combines the high hardness, wear resistance, low friction coefficient and strength of single crystal diamond with the high bending strength of tungsten carbide cemented carbide, the tungsten carbide cemented carbide layer of the composite sheet provides the diamond layer with Mechanical support, which increases its flexural strength, while the carbide layer is easily weldable, making it easy to fabricate finished knives. [0003] In recent years, as the automobile manufacturing industry adopts a large number of light materials, such as aluminum alloys and composite materials, the application of diamond tools has also increased significantly. When using PCD tools...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/28B23K26/38
CPCB23B27/14B23B2226/315B23K26/38B23P15/28
Inventor 吴建军张明菊林世民郑剑
Owner 深圳章源精密工具技术有限公司
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