Structure of low noise saw and low noise diamond sawc

Abstract

Disclosed is a diamond saw capable of reducing noise by installing a damper for absorbing vibration in a shank. The low noise diamond saw comprises: a shank formed of a circular metallic plate; and a diamond blade bonded to an outer circumferential surface of the shank, in which a damper is partially bonded to one or both of upper and lower surfaces of the shank by a spot welding. Said one or both of the upper and lower surfaces of the shank may be provided with recesses having a thickness enough for an uppermost portion of the damper not to be higher than an uppermost portion of the diamond blade According to another embodiment of the present invention, a low noise diamond saw comprises: a shank formed of a circular metallic plate; and a diamond blade bonded to an outer circumferential surface of the shank, in which a plurality of recesses having a predetermined depth are formed in upper an d lower surfaces of the shank in correspondence with each other in a circumferential direction, a hole having a diameter smaller than that of the recess is formed in the recess, and a damper is mounted in the hole so that a clearance may not be generated between a surface of the recess and a surface of the damper. In the diamond saw, noise is reduced as the number of the dampers is increased.

Description

Technical field [0001] The present invention relates to a structure of a low-noise saw, and more particularly, to a diamond saw and saw for cutting wood, metal, etc., capable of reducing noise generated during cutting operations. Background technique [0002] Such as figure 1 As shown, the diamond saw used to cut stones, concrete, asphalt, etc. when constructing buildings or roads includes a diamond blade which is bonded to the outer periphery of a disc-shaped substrate formed of cold-rolled carbon steel. [0003] When cutting stones or concrete with a diamond saw, severe noise is generated due to the vibration of the substrate. Therefore, it is mandatory to use low-noise diamond saws in Korea. In developed countries, low-noise diamond saws are commonly used on construction sites. [0004] Such as figure 2 As shown, the base of the low-noise diamond saw has a sandwich structure, in which a thin copper plate is inserted between two carbon steel plates and then spot welded. There...

AI Technical Summary

Problems solved by technology

However, if the damper has a large mass, the overall mass of the saw increases

Also, since there is a gap between the metal plate and the damper, the metal plate may chip when colliding and rubbing against the damper

So the sheet metal has a short lifespan and because the thickness of the damper is greater than the thickness of the saw, the depth of cut is limited

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