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PCBN blade for heavy cutting

A kind of blade, heavy-duty technology, applied in the direction of tools for lathes, turning equipment, accessories of toolholders, etc., can solve the problems of insufficient matrix strength, insufficient welding area, poor processing strength, etc., to optimize welding strength and processing performance, Improved machining efficiency and improved cutting performance

Inactive Publication Date: 2014-06-18
BEIJING WORLDIA DIAMOND TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The price of the overall PCBN material in the field of PCBN cutting tools is high, and most of the PCBN blades in the prior art adopt conventional blade structure, which is easy to cause the blade to fall off due to insufficient welding area and insufficient matrix strength, and the maximum effective depth of cut is low. , poor processing strength and a series of problems, the corresponding welding strength can not meet the needs of heavy cutting
[0005] At present, the improvement of the existing technology is mostly limited to direct imitation and simple improvement, the structural design ideas have been restricted, and the development of new applications for products is insufficient, and it is difficult to meet the requirements for greater maximum effective depth of cut and cutting strength.

Method used

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  • PCBN blade for heavy cutting
  • PCBN blade for heavy cutting
  • PCBN blade for heavy cutting

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Experimental program
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Effect test

Embodiment 1

[0031] Such as Figure 3-2-1 As shown, the material of the cutter head 2 is an integral PCBN (polycrystalline cubic boron nitride) without a substrate layer. The integral PCBN not only makes the strength of the cutter head high, but also significantly reduces the area of ​​the cutter head for cost control and the maximum effective depth of cut. The optimization of both aspects of cutting efficiency has a significant contribution.

Embodiment 2

[0033] Such as Figure 3-2-2 As shown, the performance of the overall PCBN cutter head is excellent, but this structure is often only suitable for continuous processing. In the strong intermittent processing, the overall PCBN is likely to collapse as a whole, which will cause the front and back of the entire cutter head 2 to fail. In normal use, in order to better adapt to various processing conditions and processing environments, the overall PCBN of the embodiment is changed into an integral PCBN with the same upper and lower halves through vacuum welding. This structural design ensures that even if the cutter head 2 When one side of the overall PCBN collapses, the other side can still be used normally, ensuring reliability and applicability under different processing conditions.

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Abstract

The invention provides a PCBN blade for heavy cutting. A recessed structure used for containing a tool bit is machined at the top corner of a base body. The tool bit is embedded in the recessed structure which is machined in a matched mode by means of vacuum welding. The recessed structure is a U-like structure. The U-like structure can greatly improve the strength of the blade due to the design of a straight line and a circular arc, the maximum effective cutting depth of a single edge can be increased to 1.5-2.0 mm from about 0.6 mm which is the maximum effective cutting depth of a common PCBN blade, and therefore the machining efficiency is improved substantially; target welding strength and machining performance are optimized to a large extent; besides, since the angle formed between each waist edge and the bottom edge of the U-like structure is an obtuse angle, the defect that the reliability is low due to the fact that the PCBN blade is prone to breakage according to a traditional acute angle design is overcome.

Description

technical field [0001] The invention relates to the technical field of machinery and superhard tools, in particular to a PCBN blade for heavy cutting. Background technique [0002] With the improvement of the strength and precision of modern machinery manufacturing and processing requirements, the corresponding machinery manufacturing and processing technology must also be upgraded simultaneously to meet the market demand. For heavy cutting, which occupies a considerable proportion in the field of machinery manufacturing and processing, heavy cutting The cutting level of the utensils needs to be optimized urgently. [0003] For PCBN inserts commonly used in cutting superhard materials, welding strength and matrix strength are important factors affecting the final cutting performance, and the direct influencing factor of welding strength is the size of the welding area. [0004] The price of the overall PCBN material in the field of PCBN cutting tools is high, and most of th...

Claims

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Application Information

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IPC IPC(8): B23B27/18
CPCB23B27/18
Inventor 张宗超李克坤袁千里
Owner BEIJING WORLDIA DIAMOND TOOLS