Moving guide bar mechanism provided with incomplete gear

Abstract

The invention discloses a moving guide bar mechanism provided with an incomplete gear. The moving guide bar mechanism comprises a slider performing reciprocating motion, a track allowing the slider to perform reciprocating motion, a guide bar, the incomplete gear serving as a driving gear and a complete gear serving as a driven gear, wherein a rotating sleeve is in hinge connection with the complete gear; one end of the guide bar is in hinge connection with the slider, and the other end of the guide bar is inserted into the rotating sleeve; a locking mechanism is arranged between the complete gear and the incomplete gear. According to the moving guide bar mechanism provided with the incomplete gear, the incomplete gear drives the complete gear to rotate, so that the guide bar drives the slider to perform reciprocating motion; the locking mechanism is arranged between the complete gear and the incomplete gear, a reciprocating part can stay for any set time in two limiting positions accordingly, and meanwhile, the moving guide bar mechanism has the advantages of high transmission efficiency and stable and reliable structure.

Description

technical field [0001] The invention belongs to the field of reciprocating motion mechanisms, and relates to an incomplete gear moving guide rod mechanism. Background technique [0002] Traditional reciprocating mechanisms, such as crank-slider mechanism and cam mechanism, in which the crank-slider mechanism uses a crank and a slider to realize the mutual conversion of rotation and movement, and the reciprocating motion of the cam pushes the follower to reciprocate or swing. . The advantages of the crank-slider mechanism are: the pressure per unit area of ​​the moving pair is small, and the surface contact is easy to lubricate, so the wear is reduced; it is convenient to manufacture, and it is easy to obtain high precision; the contact between the two components depends on their own geometry. It is maintained by the closure, unlike the cam mechanism which sometimes needs to use a spring iso-force closure to maintain contact. Therefore, the crank-slider mechanism is widely ...

AI Technical Summary

Problems solved by technology

However, the crank-slider mechanism also has disadvantages: in general, it can only approximate the given motion law or trajectory, and the design is more complicated; when the given motion requirements are more or more complicated, the number of components and The number of motion pairs is often large, which makes the structure of the mechanism complex and reduces the working efficiency. Not only the possibility of self-locking increases, but also the sensitivity of the motion law of the mechanism to manufacturing and installation errors increases; complex motion and reciprocating motion in the mechanism The inertia force generated by the components is difficult to balance

But its disadvantages are also obvious: a high pair of point or line contact is formed between the cam and the follower, and there will be greater friction and wear at the contact due to the interaction force and relative motion.

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