Polycrystalline diamond drilling and reaming integrated cutter and machining method

A polycrystalline diamond and cutting tool technology, which is applied in metal processing equipment, cutting tools for lathes, manufacturing tools, etc., can solve the problem that the precision affects the service life of carbon fiber composite materials, affects the working performance of carbon fiber composite materials, and the coaxiality of holes is affected Limit installation accuracy and other issues to achieve the effect of low cost, improved life, and guaranteed accuracy

Inactive Publication Date: 2011-08-10
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main processing methods when performing countersinking: 1. Drilling first, and then changing the tool for countersinking. The coaxiality of the processed holes is not high, which affects the working performance of carbon fiber composite materials.
2. Use a combined drilling and spot-sinking tool. This structure requires high manufacturing accuracy of the tool, and the coaxiality of the hole is severely limited by the installation accuracy.
The processing efficiency of the above two methods is relatively low, and in aerospace applications, the low precision will affect the service life of carbon fiber composite materials

Method used

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  • Polycrystalline diamond drilling and reaming integrated cutter and machining method
  • Polycrystalline diamond drilling and reaming integrated cutter and machining method
  • Polycrystalline diamond drilling and reaming integrated cutter and machining method

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A kind of polycrystalline diamond drilling and spot-sinking integrated cutter, its composition comprises: cutter base 1, described cutter base 1 has drilling end 2, spot-sinking end 3 and clamping end 4 in turn, forms stepped straight groove structure, described The drilling end 2 is welded with a group of polycrystalline diamond PCD drilling end compound blades 5, and the spot facing end 3 is welded with a group of polycrystalline diamond PCD spot facing end compound blades 6.

Embodiment 2

[0028] The polycrystalline diamond drilling and countersinking integrated tool described in Example 1, the drilling end 2 of the tool substrate is welded with a front polycrystalline diamond PCD composite blade 7 and a reverse polycrystalline diamond PCD composite blade 8, and the front polycrystalline diamond PCD composite blade 8 is welded. The diamond PCD composite blade 7 and the reverse polycrystalline diamond PCD composite blade 8 all have cutting edges, and the drilled end has a drill tip, and the drill tip is an apex cutting edge 9, a drill tip cutting edge 10 and a burr in sequence cutting edge11.

Embodiment 3

[0030] A method for processing a polycrystalline diamond drill and countersink integrated tool. The structure of this product is a stepped straight groove structure. The chips of the carbon fiber composite material are in the form of powder. The hole end is welded with a polycrystalline diamond PCD composite blade. The cutting edge is the first polycrystalline diamond PCD composite blade and the second polycrystalline diamond PCD composite blade is a PCD composite blade with two sides aligned. The cutting edge is made of a large top Angle cutting edge, drill tip cutting edge and burr cutting edge are composed of three parts. The large apex angle cutting edge makes the apex angle 2Φ larger to ensure that the drill tip has sufficient strength. Cut off more fiber filaments, the cutting edge of the burr cutting edge can cut off the burr at the exit hole of the carbon fiber composite material; the PCD composite blade is welded at the tool step to be the spot facing end, and the coni...

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Abstract

The invention discloses a polycrystalline diamond drilling and reaming integrated cutter and a machining method. Carbon fiber composite materials are widely applied to the aerospace and are almost machined by adopting a hole machining method. The polycrystalline diamond drilling and reaming integrated cutter comprises a cutter substrate (1) which is sequentially provided with a drilling end (2), a reaming end (3) and a clamping end (4) to form a stepped straight flute structure, wherein the drilling end is welded with a group of polycrystalline diamond (PCD) drilling end composite blades (5), and the reaming end is welded with a group of PCD reaming end composite blades (6). The polycrystalline diamond drilling and reaming integrated cutter is used for drilling carbon fiber composite materials.

Description

Technical field: [0001] The invention relates to a carbon fiber composite material high-precision hole integrated drilling and countersinking, in particular to a polycrystalline diamond drill-sinking integrated tool and a processing method. Background technique: [0002] Carbon fiber composite materials are widely used in aerospace, and the processing of carbon fiber composite materials is mostly hole processing. There are two main processing methods for drilling and countersinking: 1. Drilling first, and then changing the tool for countersinking. The coaxiality of the processed holes is not high, which affects the working performance of carbon fiber composite materials. 2. Use a combined drilling and spot-sinking tool. This structure requires high manufacturing precision of the tool, and the coaxiality of the hole is severely limited by the installation accuracy. The processing efficiency of the above two methods is relatively low, and in aerospace applications, low precis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B27/20B23B27/18B23P15/28
Inventor 王义文李玉甫计伟严复钢李克强刘献礼
Owner HARBIN UNIV OF SCI & TECH
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