Mechanical-energy-storing type incomplete gear quick-return reciprocating mechanism and working method thereof

Abstract

A mechanical-energy-storing type incomplete gear quick-return reciprocating mechanism is characterized by comprising a reciprocating body, an incomplete gear, an energy-storing element and a power mechanism, wherein the reciprocating body is connected with the energy-storing element and meshed with the tooth portion of the incomplete gear through the tooth portion, and the incomplete gear is connected with the power mechanism. The working method includes: (1) the incomplete gear drives a linear reciprocating body to conduct linear progress motion; the energy-storing element stores energy; and the linear reciprocating body conducts linear returning motion reversely under the function of the energy-storing element after the mesh is relieved; and (2) the incomplete gear drives a circumferential reciprocating body to conduct circumferential progress motion; the energy-storing element stores energy; and the circumferential reciprocating body makes circumferential returning motion reversely under the function of the energy-storing element after the mesh is relieved. The mechanical-energy-storing type incomplete gear quick-return reciprocating mechanism has the advantages of being high in transmission efficiency and reliability and strong in operability.

Description

(1) Technical field: [0001] The invention relates to mechanical mechanism technology, in particular to a reciprocating mechanism capable of quick return, that is, a mechanical energy storage type incomplete gear quick return reciprocating mechanism and its working method. (two) background technology: [0002] Linear or circular reciprocating mechanisms can be seen everywhere in industrial machinery and household appliances, such as the linear reciprocating conversion of the piston of an automobile engine to the continuous rotation of the crankshaft, the threading of sewing machine needles up and down, the swinging air supply of air-conditioning air deflectors, etc., all of which are reciprocating mechanisms. Work. Among the many reciprocating movements, there is a kind of reciprocating movement that needs to return quickly, such as forging, stamping, hammering, launching, etc. The process speed of the reciprocating body is not required to be fast, but the return speed must b...

AI Technical Summary

Problems solved by technology

It can be seen that there are only two ways to increase the speed v of the reciprocating body slider: first, increase the radius r of the crank, but this means that the size of the mechanism is enlarged and is subject to certain restrictions; second, increase the rotational angular velocity ω of the crank, but This means that increasing the speed and power of the power source is also subject to certain restrictions; more importantly, the speed v of the reciprocating body slider is a function of sinα, when α=±π / 2, sinα=±1, that is When the speed v of the reciprocating body slider is the largest, but this occurs in the middle of the reciprocating body slider's process and return, and the return segment that needs the most speed, when α=0 or π, sinα=0, so the reciprocating body slider's Velocity v=0, this is the key factor that the average velocity of the reciprocating body slider in the crank-slider mechanism is not high enough and the velocity distribution is unreasonable

[0004] The existing technology still uses the traditional reciprocating mechanism structure in the special field of reciprocating motion that needs to return quickly. Although it has undergone some special designs, it cannot get rid of the inherent problem that the return speed is not fast enough, so it has to continue Increasing the size of the structure greatly increases the volume, weight and cost of the equipment; continuously increasing the speed and power of the power source causes waste of energy, excessive loss of the mechanism, generation of vibration and noise, and other harmful consequences

On the other hand, there are internal forces between the parts in the operation of the traditional reciprocating mechanism. At the same time, the reciprocating body is hinged or directly in contact with the entire transmission mechanism when the high-speed return impact works, instead of being free. The reaction when the impact works The force will be directly transmitted to the transmission mechanism, causing damage to the transmission mechanism. These two aspects make the transmission mechanism take additional measures in many aspects such as design, material selection, maintenance, etc., which greatly increase its direct and indirect costs.

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