Cutter

Abstract

The present invention relates to a cutter, which includes an operating bench (100); a machine frame (200), which is rotatablely fixed on the operating bench by one end, and a switch is provided on the other end; a motor (300), which is mounted at one end of the machine frame; a cutting part (400), which is positioned at one side of the machine frame and is provided with a cutting blade (410); a transmission part (500), which transfers the power of motor to the cutting blade through a belt. The transmission part comprises: a fixing plate, which is mounted on one side of the machine frame, and on which a rotation shaft for the motor and a rotation shaft for the cutting blade are provided projecting on the side portion of the machine frame; a reduction pulley (520), which is rotatablely mounted on the fixing plate and has a two step structure; a first belt a second belt for joining the driving pulley on the motor rotation shaft and the major diameter pulley of the reduction pulley and joining the minor diameter pulley of the reduction pulley and the driven pulley on the rotation shaft of the cutting blade. The present invention can provide a optimum rotary speed required for cutting a workpiece, significantly reduce the noise, and since no gear is used, the failure rate is significantly reduced, it is convenient for maintenance and the maintenance costs is lowered.

Description

technical field [0001] The invention relates to a cutting machine, especially a cutting machine that transmits power to a motor and a rotary cutting knife through a belt connection, so that a more stable rotating force can be transmitted and the maintenance is easy. Background technique [0002] Usually, the cutting machine cuts hard metal by its high-speed rotating cutting knife, such as figure 1 As shown, it includes: a cutting part, which is provided with a device for cutting the workpiece; a base part, which fixes the workpiece and provides support for the cutting part; a coupling part, which connects the above-mentioned base part and the cutting part. [0003] Specifically, the above-mentioned cutting part includes: a frame 1; a motor 4 installed on one side of the above-mentioned frame 1 to generate a driving force; arranged on the above-mentioned frame 1 and rotated by the driving force of the above-mentioned motor 4 to cut the workpiece The cutting knife 5 of 11; in...

AI Technical Summary

Problems solved by technology

[0014] However, although the transmission part of the circular saw machine of the above structure is a two-stage transmission, the transmission wheel in the middle, that is, the first driven wheel coaxial with the first driven shaft, does not have a variable diameter design, does not have a deceleration function, and only plays a role in reducing the speed. In addition, the first driven wheel does not have a tension adjustment function, so that the transmission unit cannot transmit stable rotational force

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