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Integrated PCBN round rod-shaped cutting tool and manufacturing method thereof

A technology for cutting tools and round rods, applied in the field of integral PCBN round rod-shaped cutting tools and its preparation, can solve the problems of increasing equipment costs, inability to cut three-dimensional or shaped PCBN brazing sheets, and low service life

Active Publication Date: 2018-02-27
FUNIK ULTRAHARD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, commonly used tool materials are PCBN composite sheet, ceramics, cemented carbide, alloy steel, etc. Among them, PCBN composite sheet is the most effective tool for ferrous metal processing, including polycrystalline cubic boron nitride layer and cemented carbide substrate layer, but In the field of round rod-shaped tools (such as drills, taps, end mills, etc.), PCBN tools have not been used on a large scale because of the complex structure of such tools, and the materials of such tools are usually alloy steel and hardened steel that are easy to process. Alloy materials, so the service life of such tools is generally low. During high-speed machining, it is necessary to change tools frequently or increase the loading capacity of the cutter head, which seriously restricts the processing efficiency and increases the cost of equipment. However, the existing hard Alloy tool brazing PCBN process is also unable to cut three-dimensional or complex PCBN brazing sheet

Method used

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  • Integrated PCBN round rod-shaped cutting tool and manufacturing method thereof
  • Integrated PCBN round rod-shaped cutting tool and manufacturing method thereof
  • Integrated PCBN round rod-shaped cutting tool and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The present embodiment provides a kind of integral PCBN circular rod-shaped cutting tool, such as figure 1 and figure 2 As shown, it includes a carbide handle 1 and an integral PCBN circular rod-shaped cutter head welded on the carbide handle 1;

[0029] The overall PCBN circular rod-shaped cutter head includes a cemented carbide substrate layer 2 and a polycrystalline cubic boron nitride layer 3 arranged on one side of the cemented carbide substrate layer 2, and the other side of the cemented carbide substrate layer 2 One side is welded with the hard alloy handle 1, and a layer of weld seam 6 is formed between the two.

[0030] Specifically, such as figure 2 As shown, the overall PCBN circular rod-shaped cutter head is provided with a chip removal groove 5, and the chip removal groove 5 extends from the polycrystalline cubic boron nitride layer 3 to the middle of the cemented carbide substrate layer 2 , the edges of the flutes located on the polycrystalline cubic ...

Embodiment 2

[0040] The present embodiment provides a kind of integral PCBN circular rod-shaped cutting tool, such as figure 1 and image 3 As shown, it includes a carbide handle 1 and an integral PCBN circular rod-shaped cutter head welded on the carbide handle 1;

[0041] The overall PCBN circular rod-shaped cutter head includes a cemented carbide substrate layer 2 and a polycrystalline cubic boron nitride layer 3 arranged on one side of the cemented carbide substrate layer 2, and the other side of the cemented carbide substrate layer 2 One side is welded with the hard alloy handle 1;

[0042] The overall PCBN circular rod-shaped cutter head is provided with a chip removal groove 5, and the chip removal groove 5 extends from the polycrystalline cubic boron nitride layer 3 to the middle part of the hard alloy substrate layer 2, and is located at the The edge of the flute on the polycrystalline cubic boron nitride layer 3 forms a cutting edge. The chip removal groove 5 is a spiral chip ...

Embodiment 3

[0049] This embodiment provides an integral PCBN circular rod-shaped cutting tool, the specific structure is roughly the same as that in Embodiment 2, the difference is that:

[0050] In this embodiment, the outer peripheral surface of the polycrystalline cubic boron nitride layer is also provided with a cutting cone and a calibration thread to form an integral PCBN circular rod-shaped tap.

[0051] This embodiment also provides a method for preparing the above-mentioned integral PCBN circular rod-shaped cutting tool, the specific steps are roughly the same as those in Embodiment 2, the difference is that:

[0052] In this embodiment, the step of preparing the overall PCBN circular rod-shaped cutter head also includes grinding the cutting cone and the calibration thread on the outer peripheral surface of the polycrystalline cubic boron nitride layer by using the vitrified bond diamond grinding wheel. step by step.

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Abstract

The invention provides an integrated PCBN round rod-shaped cutting tool. The integrated PCBN round rod-shaped cutting tool comprises a hard alloy handle and an integrated PCBN round rod-shaped tool bit. The integrated PCBN round rod-shaped tool bit comprises a hard alloy substrate layer and a PCBN layer arranged on one side of the hard alloy substrate layer. A chip groove is formed in the integrated PCBN round rod-shaped tool bit and extends to the middle of the integrated PCBN round rod-shaped tool bit from the PCBN layer. The invention further provides a manufacturing method of the integrated PCBN round rod-shaped cutting tool. The manufacturing method of the integrated PCBN round rod-shaped cutting tool comprises the steps of preparation of a PCBN composite round bar blank, preparationof the integrated PCBN round rod-shaped tool bit and welding formation. By adoption of the manufacturing method, the integrated PCBN round rod-shaped cutting tool of a complex structure can be manufactured, the application range of the PCBN tool is widened, and the service life of the tool is prolonged.

Description

technical field [0001] The invention belongs to mechanical processing tools, and in particular relates to an integral PCBN circular rod-shaped cutting tool and a preparation method thereof. Background technique [0002] Ferrous metal is currently the most widely used metal material in industry, and its cutting process has always been the focus of people's attention, especially steel products represented by stainless steel materials have very high requirements for tool materials. It needs to combine hardness, toughness, thermal conductivity, low friction and many other factors. [0003] At present, commonly used tool materials are PCBN composite sheet, ceramics, cemented carbide, alloy steel, etc. Among them, PCBN composite sheet is the most effective tool for ferrous metal processing, including polycrystalline cubic boron nitride layer and cemented carbide substrate layer, but In the field of round rod-shaped tools (such as drills, taps, end mills, etc.), PCBN tools have no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/34B23P15/32B23C5/10B23B51/02
CPCB23B51/02B23B2222/28B23B2226/125B23C5/10B23C2222/28B23C2226/125B23P15/32B23P15/34
Inventor 王彬彬马宁解亚军陈培李丙文王丽
Owner FUNIK ULTRAHARD MATERIAL
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