PCD (Poly Crystal Diamond) molding cutter for machining belt pulley

Abstract

The invention relates to a PCD (Poly Crystal Diamond) molding cutter for machining a belt pulley. The PCD molding cutter comprises a cutter handle and a PCD cutter bit, wherein a tangent plane is arranged at the top of the cutter handle; a groove is formed in the top of the side wall of the cutter handle; a chamfer edge is arranged between the bottom of the groove and the side wall of the cutter handle; the PCD cutter bit is provided with a front cutter face and a rear cutter face; the front cutter face is arranged obliquely relative to the side wall of the cutter handle; the rear cutter face is arranged obliquely relative to the front cutter face; the PCD cutter bit comprises a plurality of milling teeth, a transition edge and a side edge; a milling groove is formed between the adjacent milling teeth; and the section of the transition edge comprises a horizontal plane and an inclined plane. The PCD molding cutter provided by the invention can be used for machining a plurality of grooves at the same time, is rapid in molding and resists abrasion, so that the machining efficiency and the machining quality are improved.

Description

Technical field [0001] The invention relates to a PCD tool, in particular to a PCD forming tool for belt pulley processing. Background technique [0002] Diamond cutting tools have the characteristics of high hardness, high compressive strength, good thermal conductivity and wear resistance, and can achieve high machining accuracy and machining efficiency in high-speed cutting. The above-mentioned characteristics of diamond tools are determined by the state of diamond crystals. In diamond crystals, the four valence electrons of carbon atoms form bonds according to a tetrahedral structure, and each carbon atom forms covalent bonds with four adjacent atoms to form diamonds. The structure, the bonding force and direction of the structure is very strong, so that the diamond has extremely high hardness. The structure of polycrystalline diamond (PCD) is a fine-grained diamond sintered body with different orientations. Because the PCD sintered body is isotropic, it is not easy to crack...

AI Technical Summary

Problems solved by technology

[0003] The geometric parameters and structural design of the PCD milling insert in the prior art are not reasonable enough. During the milling process of the tool, the back angle of the insert is too large and the sharp edge is too sharp, which is prone to chipping and is not resistant to wear. The service life of the blade is short, but in the process of machining, there are generally large errors in roundness and straightness. It is difficult to process multiple grooves at the same time in the process of belt pulley processing, thereby reducing the forming process efficiency.

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