SU449191A1 - A mechanism for converting rotational motion into a returnable - Google Patents

Description

Isobrot: 1; It is related to machine building, and HMeiiiio refers to the design of mechanisms for converting rotary motion into reciprocating.

Mechanisms are known for the formation of rotary motion into reciprocating, comprising a drive shaft, a pusher, a device for converting movements interacting with a drive shaft and a pusher, and a device

for the power closure of the kinematic chain of the mechanism,

1 The remnants of the known mechanisms are the large dimensions of the motion transducer, low load

ability and rather complicated manufacturing techniques.

The purpose of the invention is the simplification of manufacturing technology, noBbuiJOHiie loading capacity of the mind of the mechanism dimensions.

This is achieved by the fact that, in the proposed mechanism, the device for the imitation of movements is made in the form of a stubborn 1air 11kppodshigika with wire

2

expensively; ka; l); achm.: ia, one of the support ico ;, eu of which is rigidly connected with the drive shaft, another support ring with the lateral, and each of the support rings is eccentrically relative to drive shaft axis.

With regula- tion of the stroke (Tol fur), it is equipped with a device for changing the eccentricity of one of the bearing bearing rings.

The figure schematically shows the mechanism for converting rotational motion into reciprocating i.oe at the lowest to the dead point.

The mechanism contains a drive shaft 1, a Kf rotary pusher 2, a device for power closure of a kinematic i.ie; iii mechanism, made in the form of a spring 3, and a device for converting motions that interacts with the drive jbiM shaft 1 and the pusher 2.

The motion conversion device is a hard ball end (iiJis) with wire tracks, swing 4, the lower support ring 5 which

; tightly connected with drive vzg and upper support ring 6 - with devrashayuschim pusher 2. Moreover, each of the support rings 5 and 6 is installed with eccentricity I relative to the axis of the drive shaft 1, selected Hbiivj depending on the required stroke p, return "- Forward motion, ball diameter 7 and wire diameter / rolling diameter 4,

One of the on-off rings or 6 is provided with a device for changing the eccentricity t, for example, with a helical mechanism 8, sweeping a non-rotating pusher 2 in a plane perpendicular to the axis of rotation of the drive shaft 1.

A mechanism for converting rotational motion into a reciprocating approach. body works as follows.

I drive the drive shaft 1 from the position when the eccentricities I support ends 5 and 6 are set in one direction (bottom dead point), support count 3 of the unresting ballhead acts with its rolling lines 4 on balls 7 that run along the wire paths: rolling and at the same time around the catenary wires. Balls 7, in the course of their movement, act on the rolling tracks 4 of the upper support ring 6, which is tempered upwards together with the nevalialtms push rod 2. In this case, the angle

: Between the pressure and the plane of the rotation of the bearing increases.

This happens when changing the angle of rotation of the drive shaft .1 from O to 180

Upon further movement, the angle f € € 51 is lowered to the initial value, and the neurash pusher 2 as a result of the force closure of the kinematic chain, for example, under the action of

3, returns to the bottom dead center.

When the eccentricity t of one of the support rings 5 or 6 changes, for example by a screw mechanism 8 moving the pusher 2 in a plane perpendicular to the axis of the turn of the drive shaft 1, the value of the stroke of the pusher and, consequently, the stroke of the reciprocating movement of the mechanism changes from maximum to null,

Subject invention

Claims (2)

1. The mechanism for converting rotary motion into reciprocating, comprising a drive shaft, a pusher, a device for converting movements interacting with a drive shaft and a pusher, and a device for powering the circuit of the mechanism, characterized in that, in order to simplify the manufacturing technology , increase the load capacity and reduce the size of the mechanism, the movement conversion device is made in the form of a thrust ball bearing with rolling wire tracks, one of KOTOpoi o rings are rigidly connected to the drive shaft, another support ring with a pusher, and each from the support rings installed with eccentricity relative to the axis of the drive shaft, 2.Mechanism, according to claim 1, that is, so that, in order to regulate the pusher stroke, the mechanism is equipped with a device for changing the eccentricity of one of the bearing rings.