Cutting device for stone angle grinder

Abstract

The invention relates to a cutting device for a stone angle grinder. The cutting device for the stone angle grinder comprises a disc cutting body; a plurality of cutting blades are uniformly distributed on the circumferential surface of the outer side of the cutting body; a slanting groove which extends in a radial direction is formed between every two adjacent cutting blades; a superhard abrasivelayer is arranged on the outer surface of each cutting blade and is sequentially provided with a cobalt-nickel alloy layer, a copper layer and a cobalt-nickel alloy layer from inside to outside; a mounting hole is formed in the center of the cutting body; a plurality of heat dissipation holes are uniformly distributed at the periphery of each mounting hole; and a noise reduction hole which penetrates the corresponding heat dissipation hole is formed in the cuspidal edge end part of the heat dissipation hole. The cutting device for the stone angle grinder has the beneficial effects of being capable of lowering noise of equipment, prolonging the service life, increasing the cutting sharpness degree and lowering the production cost.

Description

technical field [0001] The invention belongs to the technical field of cutting tools, in particular to a cutting piece for a stone angle grinder. Background technique [0002] At present, the commercially available ultra-thin cutting blades are mainly used to cut some non-metallic objects that are relatively easy to cut. For some metal objects, the cutting blades will generate high heat during high-speed cutting. The internal distribution of the cutting disc causes excessive heat inside the ultra-thin cutting disc, so that the ultra-thin cutting disc is prone to distortion and deformation under the influence of these accumulated heat, and when the cutting disc is distorted and deformed, the size of the cutting disc itself is also It will change accordingly, resulting in a reduction in the machining accuracy and reliability of the cutting disc. In addition, during the cutting process of the workpiece, the friction surface of the workpiece and the cutting disc will continuousl...

AI Technical Summary

Problems solved by technology

[0002] At present, the commercially available ultra-thin cutting blades are mainly used to cut some non-metallic objects that are relatively easy to cut. For some metal objects, the cutting blades will generate high heat during high-speed cutting. The internal distribution of the cutting disc causes excessive heat inside the ultra-thin cutting disc, so that the ultra-thin cutting disc is prone to distortion and deformation under the influence of these accumulated heat, and when the cutting disc is distorted and deformed, the size of the cutting disc itself is also It will change accordingly, resulting in a reduction in the machining accuracy and reliability of the cutting disc. In addition, during the cutting process of the workpiece, the friction surface of the workpiece and the cutting disc will continuously generate cutting heat. Under the influence of thermal expansion and cold contraction, it is easy to deform, so that the cutting teeth of the cutting wheel are easy to get stuck in the workpiece, reducing the stability of the cutting work of the cutting wheel

[0003] In view of the above phenomenon, the patent CN204149045U discloses a cutting piece, including a cutting body, the cutting body is a disc-shaped disc body, and a plurality of cutting blades are evenly distributed on the outer peripheral surface of the cutting body, and the adjacent There is a radially extending chute between the cutting blades, the bottom of the chute is a chip removal groove recessed from the outside to the inside, and the outer surface of the cutting blade and the outer surface of the chip removal groove are arranged with Superabrasive layer, the central position of the cutting body is provided with a mounting hole, and a plurality of cooling holes are evenly distributed along the periphery of the mounting hole. Curved from inside to outside in the counterclockwise direction, each heat dissipation hole is bent in the same direction from the inside to the outside in the circumferential direction of the cutting body, and the aperture size of the heat dissipation hole gradually increases along the counterclockwise direction of the cutting body; the cutting piece of this structure It can achieve stable cutting, increase the internal and external heat of the cutting disc, and reduce the amount of distortion; but when the cutting disc of this structure is used for stone cutting, the cutting disc is close to the rotor of the angle grinder during the operation of the stone angle grinder. The end face rotates, which will easily cause the end face of the cutting blade and the rotor to wear, and the consequence is that the assembly gap increases and the noise generated during operation increases, which not only causes environmental pollution, but also affects the transmission performance between various components. In addition, because the superhard film wear-resistant layer on the existing cutting blade is only a single-layer design, such as a copper layer, although its wear resistance has been increased, it cannot guarantee the cutting sharpness of the cutting machine; such as the cobalt-nickel alloy layer, both It ensures the degree of wear resistance and the cutting sharpness of the cutting machine, but its cost is relatively high; therefore, there is still room for improvement in the existing cutting devices for stone angle grinders

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