Mechanical device for producing reciprocal rectilinear motion output

Abstract

The invention discloses a mechanical device for producing reciprocal rectilinear motion output, which comprises an inside groove cam component, a connecting rod, an output piece, an idler wheel 5, an idler wheel 24, a first guide rod, a second guide rod, a dead axle, a first guide rod pin, a second guide rod pin and a motor, wherein the inside groove cam component comprises a cam sleeve, an upper cam curve and a lower cam curve; the upper cam curve and the lower cam curve are mounted at two ends of a cavity of the cam sleeve in the opposite direction respectively; the peak of the upper cam curve corresponds to the nadir of the lower cam curve, and the nadir of the upper cam curve corresponds to the peak of the lower cam curve to form an inner race formed by gaps with the same size as the idler wheel 5; the centre line of the inner race is a centroid track when the idler wheel 5 and the idler wheel 24 move relative to the inner race; the two guide rods are reciprocal rectilinear motion output pieces and are connected with the connecting rod respectively at the same end; one end of the connecting rod is an output end; and the connecting rod can enlarge displacements of the two guide rods. According to the invention, the connecting rod only swings and does not displace, so that vibration and noises of the entire system are reduced.

Description

technical field [0001] The invention is a mechanical device for generating reciprocating linear motion output, which belongs to the innovative technology of the mechanical device for generating reciprocating linear motion output. Background technique [0002] The prior art of the reciprocating saw in the power tool is: the hole at one end of the connecting rod 01 is hinged on the eccentric pin 06 on the end face of the driven wheel 02, and the other end is hinged with the output member 03. When the motor drives the driven wheel 02 to rotate through the driving wheel 05 installed on the output end of the armature shaft, the eccentric pin 06 on its end surface pulls the output member 03 through the connecting rod 01 to make a reciprocating linear motion. The direction of movement of the output member is in the direction of its guide 04 . This direction is generally the direction of the line connecting the rotation centers of the driving wheel 05 and the driven wheel 02, such ...

AI Technical Summary

Problems solved by technology

[0003] Depend on figure 1 It can be seen that a certain distance and structural size are required between the eccentric pin 06 and the rotation center of the driven wheel, resulting in a larger volume of the driven wheel. From the analysis of the force state, if the pressure angle on the hinge point is to be smaller, the connecting rod 01 needs to be longer, which means Make the size of the connecting rod too large; from the analysis of the motion state, because the size of the connecting rod 01 is too large, there are swings and reciprocating motions during the motion process, so its moment of inertia and inertial force interfere greatly during the high-frequency reciprocating motion, and there is no Balance Compensation Structure

It makes the vibration and noise very loud during the working process of the mechanism

[0004] In summary, there are defects in the existing technology, resulting in too large product size, too much noise and vibration, and a new transmission mechanism must be used to solve the above problems

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