A pcd welding forming tool

Abstract

The invention discloses a PCD welding and molding cutter and belongs to the technical field of molding cutters. The PCD welding and molding cutter comprises a cutter handle main body, wherein a cutterhandle connection block is arranged on the cutter handle main body; a PCD compound sheet is adhered to one side of the cutter handle connection block; a fixed groove is formed in the cutter handle connection block; the lower end of the PCD compound sheet is fixedly connected with a plurality of uniformly distributed main fixing pillars; the main fixing pillars are fixedly connected with a plurality of uniformly distributed secondary fixing pillars; the main fixing pillars and the secondary fixing pillars are located in the fixed groove; main brazing fluxes are filled among the main fixing pillars, the secondary fixing pillars and the fixed groove. According to the PCD welding and molding cutter, the structure principle of the diamond ring is used; through clamping of claw inserts, the connection strength between the PCD compound sheet and a hard alloy is greatly improved; meanwhile, the cutter can be brazed at different temperatures according to areas; the thermal damage to the PCD compound sheet is avoided; the cutting performance of the PCD compound sheet is not influenced; meanwhile, the strength can also be improved by 30-50%.

Description

technical field [0001] The invention relates to the technical field of forming cutters, and more specifically, relates to a PCD welding forming cutter. Background technique [0002] PCD cutters are made by welding PCD composite sheets to carbide or steel cutter bodies. Since the PCD composite sheet combines the high hardness, wear resistance, low friction coefficient of single crystal diamond and the high bending strength of tungsten carbide cemented carbide, the PCD composite sheet not only increases the bending strength, but also the cemented carbide layer Easy to weld, making it easy to create 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 PCD tools has also increased significantly. For example, in the processing of certain processes of the gearbox housing, the original carbide boring tool is changed to a diamond tool, and th...

AI Technical Summary

Problems solved by technology

As we all know, the brazing of cemented carbide mostly adopts high-temperature brazing process (brazing temperature is about 1000°C), while PCD composite sheet must be brazed at low temperature, otherwise it will cause thermal damage to PCD composite sheet and affect its cutting performance.

However, the joint strength of low-temperature brazing is often low, and it is easy to cause desoldering during tool processing, which will directly affect the strength of PCD welding forming tools

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