portable cutting machine

Abstract

The invention provides a portable cutting machine which comprises a shell, a swing output shaft, a motor, a driving shaft and a movement conversion mechanism. The swing output shaft partially extends out of the shell and is provided with an output shaft axis, the motor is accommodated in the shell, the driving shaft is driven to rotate by the motor and is provided with a driving shaft axis, the movement conversion mechanism converts rotation of the driving shaft into swing of the swing output shaft, and the output shaft axis is parallel to the driving shaft axis. According to the technical scheme, the portable cutting machine has the advantages that vibration of the portable cutting machine can be low during cutting operation, and the cutting precision and the operation comfort are improved.

Description

technical field [0001] The invention relates to a portable cutting machine, in particular to a portable cutting machine which swings and cuts workpieces. Background technique [0002] Existing portable cutting machines that drive saw blades to swing and cut workpieces are equipped with a motor, an eccentric part driven by the motor, a shift fork that cooperates with the eccentric part to convert rotation into swing, and a swing output shaft driven by the shift fork. , and the saw blade mounted on the swing output shaft. [0003] In the prior art, the axis of the motor shaft and the axis of the swing output shaft are vertically arranged, so that the friction force generated during the cooperation between the eccentric member and the shift fork is parallel to the axis of the swing output shaft. Under the action of force, the oscillating output shaft will produce a certain displacement along its own axis direction, so as the portable cutting machine cuts the workpiece, the loa...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the axis of the motor shaft and the axis of the swing output shaft are vertically arranged, so that the friction force generated during the cooperation between the eccentric member and the shift fork is parallel to the axis of the swing output shaft. Under the action of force, the oscillating output shaft will produce a certain displacement along its own axis direction, so as the portable cutting machine cuts the workpiece, the load of the portable cutting machine will increase, and the friction will also increase at this time. At this time, the oscillating output shaft will The vibration generated by the shaft along the axial direction is very severe, resulting in poor cutting accuracy, and the entire body vibrates too much, making it very uncomfortable for users to use, and it will cause great damage to the health of users when used for a long time

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