Efficient circular saw blade of cold saw

Abstract

The invention relates to a cutting tool for section bars such as steel pipes and round steel, in particular to an efficient circular saw blade of a cold saw. The efficient circular saw blade of the cold saw is characterized in that the circular saw blade 8 is not provided with an expansion groove, a tool bit 5 and silencing lines 4 are arranged on the outer side of the circular saw blade 8, the silencing lines 4 are of a double-face penetrating and radial centripetal strip structure of the circular saw blade 8, the multiple silencing lines 4 are distributed on the circular saw blade 8 in the circumferential direction, the radial range of the silencing lines 4 is larger than 2 / 3 of the radius of the circular saw blade 8, and the inward range of the silencing lines 4 is a circumferential range 3 which is larger than 10 mm away from a tooth bottom 9; the circumferential range of each silencing line is within a silencing line area 2 formed by overlapping a sector with an included angle B1 of 10 degrees between two radial centripetal rays of the circular saw blade 8 and the circumferential range. Through the arrangement above, good flatness of the section of a cut workpiece can be achieved, lines of each cutter are clear and visible, friction between the side face of the tool bit and a cutting gap is eliminated, so that power loss of a sawing machine is reduced; heat generated by the workpiece and the saw blade is little, so that the saw blade can keep the optimal cutting performance for a long time.

Description

technical field [0001] The invention relates to a cutting tool for section materials such as steel pipes and round steel, in particular to a high-efficiency cold saw circular saw blade. [0002] technical background [0003] The cold saw circular saw blade is a tool used for cutting various steel materials. Due to the small diameter of the existing cold saw circular saw blade, the cutting force is strong. If the sound-absorbing line and the expansion groove are set in the same way as the aluminum saw, it is easy to twist, break the teeth, and tear the substrate during the cutting work of the cold saw circular saw blade. Cracks generally have no silencer lines. The existing cold saw circular saw blade will vibrate and make a lot of noise during cutting, resulting in a cutting section that looks smooth but is actually wavy. The workpiece needs secondary processing when it is used for other applications, and the smoothness of the section is the key to the smoothness of the saw ...

AI Technical Summary

Problems solved by technology

Due to the small diameter of the existing cold saw circular saw blade, the cutting force is strong. If the sound-absorbing line and the expansion groove are set in the same way as the aluminum saw, it is easy to twist, break the teeth, and tear the substrate during the cutting work of the cold saw circular saw blade. Cracks generally have no silencer

The existing cold saw circular saw blade will vibrate and make a lot of noise during cutting, resulting in a cutting section that looks smooth but is actually wavy. The workpiece needs secondary processing when it is used for other applications, and the smoothness of the section is the key to the smoothness of the saw blade. It is caused by the irregular friction of the left and right vibration of the saw blade, which can easily cause the saw blade to overheat and the cutter head to become dull

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