SU1392263A1 - Flexible coupling - Google Patents

Abstract

This invention relates to instrumentation engineering and can be used to connect shafts, instruments and mechanisms. The goal is to improve the accuracy of angular motion transmission. The clutch contains two coupling halves 1 and 2, intermediate link 3. Intermediate, but 3 is clamped to the coupling halves through balls 5 by means of flat springs 7. The coupling provides compensation for displacements along two mutually perpendicular axes and skews with respect to these axes. Fixing the flat springs on the coupling halves and intermediate stars & and not their location in a plane perpendicular to the axis of rotation, allows you to save the rigidity of the structure to twist around the axis of rotation. 4 il. (WITH

Description

The invention relates to instrument making and is used to connect the shafts of angular transducers and mechanisms in order to transfer the angular movement from one shaft to another in the presence of their misalignment, distortions and axial beating.

The aim of the invention is to improve the accuracy of angular motion transmission.

FIG. 1 shows a compensation coupling, general view; in fig. 2 - TYPE A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 - intermediate coupling compounds with half coupling.

The clutch contains the leading and driven half coupling 1 and 2, the intermediate link 3, for example in the form of a plate with two projections, other elements 4, is; an example of a spring that presses the intermediate link to the leading coupling half through the balls 5. The plastic plates 6 are connected to the driven coupling half 2 and the intermediate link 3 by flat springs 7 of rectangular shape.

Half coupling 1 is made of two parts mounted on the drive shaft and screwed. In intermediate link 3, blind holes are made for balls 5, which are rotatably mounted. One end of the springs 4 is connected with half coupling 1, and the other, .- with intermediate

link 3, thanks to what is implemented-.

with the closure of the intermediate link 3 with balls 5 on a flat working surface of the coupling half 1.

The flat springs 7 are attached to the coupling half 2, link 3 and the plates 6 with screws and plates. The half coupling 2, the plates 6 and the intermediate link 3 (connected by flat springs 7) form a parallelogram with elastic hinges. In order to compensate for the misalignment of the shafts to be connected along the Z axis (so (as with respect to other axes, misalignment and skewness is performed by connecting the flat working surface of the first coupling half with the intermediate link through the balls), the plates are parallel to the plane passing through the centers of the balls 5 along the axis of rotation. In addition, the flat working surface of the half-coupling is located at a distance equal to the slider of the ball radius from the axis

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coupling symmetry. Such an embodiment of the coupling allows one to get rid of the redundancy of the compensatory movements of its elements and creates the optimal starting position of the parallelogram, which improves the accuracy of the proposed coupling.

In this coupling, there are increased requirements for only one flat surface, the working surface of coupling half 1, which also has an effect on improving the accuracy of its operation.

When the driving half coupling 1 rotates, the torque is transmitted through balls 5 to intermediate link 3, then through flat springs 7 to plates 6 and then through the second row of springs 7 to driven coupling half 2.

In the presence of misalignment and distortions of the shafts, as well as their axial beating, the coupling can compensate for all these defects. Connecting the leading coupling half 1 with intermediate link 3 through balls 5 allows you to compensate for the displacement (misalignment) along the Y axis, the displacement along the X axis, and turns (distortions) around the axes 7, and Y. The connection of the plates with 6 elastic plates with the intermediate link and the driven half coupling 2 allows you to compensate for the last defect - displacement along the Oi Z.

The parallelogram with elastic hinges, formed by flat springs 7, link 5 and half coupling 2, allows to preserve the rigidity of the coupling design on twisting around the axis

rotation when bending flat springs 7. (in case of misalignment compensation along the Z axis), since these springs are located in a plane perpendicular to the axis of rotation.

Thus, the connection of the first coupling half 1 with an intermediate link 3 through the balls 5 allows to compensate four movements, and the connection of the plates 6 with a flat spring II and 7 with an intermediate link 3 and the second half-coupling 2 forms an elastic parallelogram, compensating only one last movement. The flat working surface of the first coupling half is located at a distance from the axis of symmetry of the coupling equal to half the radius of the ball. This allows the elastic parellogram, and hence the clutch itself, to occupy an optimal initial position.

Due to the fact that the coupling does not have redundant compensatory shifts, the accuracy of the transmitted movement is improved, its design is simplified and manufacturability is improved.

Claims (1)

Invention Formula A compensation coupling containing two coupling halves and an intermediate link between them with rolling elements, preloaded with springs to p the barrel surface of one of the semi Couplings, characterized in that, in order to increase the accuracy of angular motion transmission, it is equipped with a pair of plates and flat springs, the springs are fixed console and parallel to each other on the intermediate link and the second layer, and their free ones are connected by plates mounted parallel to each other PG and the longitudinal axis of the coupling, the working surface of the first coupling half is located from the axis of symmetry of the coupling at a distance equal to half the radius 45 tf SSiS View at Ptya 2 fie. 3 FIG.