Oblique angle cutting hole saw

Abstract

The invention belongs to the technical field of cutting tools, and in particular relates to a bevel cutting hole saw. The sawtooth cutting edges formed by the intersecting lines of the rake face and the flank face of the guide tooth, right sawtooth and left sawtooth of the hole saw are all inclined straight lines with the same inclination direction, and the rake faces of the sawtooth are arc-shaped bevels. Different from the cutting edge of the hole saw in the prior art, which is a horizontal straight line, that is, the blade inclination angle is 0°, the cutting edge of the present invention is an oblique cutting of an inclined straight line, and the edge inclination angle adopts a negative value, thereby changing the outflow direction of chips , so that the chips can be quickly and effectively removed along the inclined rake face, improve the chip removal efficiency, not scratch the surface of the processed parts, and improve the surface processing quality of the parts; at the same time, the hole saw is the first to contact the workpiece during the cutting process, so that The cutting edge gradually penetrates into the workpiece, avoiding the slippage of the horizontal straight cutting edge during the cutting process, improving the centering ability, improving the stability during cutting, reducing the vibration during cutting, and improving the processing efficiency.

Description

technical field [0001] The invention belongs to the technical field of cutting tools, and relates to a hole saw for processing circular holes in industry or engineering, in particular to a bevel cutting hole saw. Background technique [0002] Hole saws are also called hole saws. As a practical hole processing tool, they are installed on power tools such as electric hand drills and impact drills or radial drills. They are widely used to open holes in metal or non-metal workpieces. At present, the main difficulty in the cutting process of the existing hole saw is how to effectively control the removal of chips, and at the same time realize fast and stable cutting, and ensure the quality of the surface of the cut workpiece. First of all, as the depth of cut increases, the chips cannot be discharged smoothly and are easy to accumulate in the tooth grooves, which reduces the drilling speed of the hole saw and affects the processing efficiency. At the same time, the chips accumula...

AI Technical Summary

Problems solved by technology

First of all, as the depth of cut increases, the chips cannot be discharged smoothly and are easy to accumulate in the tooth grooves, which reduces the drilling speed of the hole saw and affects the processing efficiency. At the same time, the chips accumulated in the tooth grooves are easy to damage the saw teeth and reduce the service life of the saw teeth; , when the hole saw starts cutting, the cutting edge is not easy to cut into the workpiece, and it is prone to slipping, and vibration is likely to occur during the cutting process, which affects the quality of cutting; then, due to the friction between the chips and the inner wall of the drilled hole, the surface of the inner wall of the drilled hole will be affected Quality, see the accompanying drawings in the manual Image 6 (b)

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