SU1213277A1 - Flexible coupling - Google Patents

Description

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

The purpose of the invention is to improve the accuracy of motion transmission and reduce size.

FIG. 1 shows a compensation coupling; in fig. 2 is a section A-A in FIG. one; in fig. 3 - coupling at the offset of the axles of the coupling halves; in fig. 4 is a section BB in FIG. 3

The coupling contains the leading and driven coupling halves 1 and 2, the cruciform membrane 3, four flat mutually perpendicular springs 4 and four bushings 5. The springs 4 are connected to the coupling halves 1 and 2 and the bushings 5 by means of linings 6 with screws and pins. The membrane 3 is connected to the liners 5 by means of linings 7 screws and pins. To increase stiffness, the central part of the membrane is clamped between the disks 8 with screws and fixed with pins.

The clutch works as follows.

When rotating the drive half coupling, for example 1, the torque is transmitted through two springs 4 to the bushings 5

five

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five

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and then to the cruciform membrane 3, which through two other liners 5 and two springs 4 to the driven half coupling 2. In the presence of misalignment between half coupling 1 and 2, they shift one relative to the other in the radial direction due to bending of the springs 4, and tilt and axially displace due to the bending of the membrane 3.

In the proposed coupling, the functions of the elements are strictly differentiated. The crest-like membrane only compensates for the distortions and axial displacements of the connected shafts, since it has a low axial rigidity; Scientific research institutes and at the bending moments big rigidity in the radial direction. The flat springs compensate only radial displacements, since they have low rigidity in the radial direction and their rigidity at bending moments is much greater than the rigidity of the membrane, since the axes of the bend of the springs are parallel to the axis of rotation of the coupling. Such a distinction between the functions of the coupling elements allows them to transfer movement from one coupling half to another more accurately. The arrangement of the liners between the dolomouch slots, as well as the implementation of the elastic element in the form of a membrane, also makes it possible to significantly reduce the dimensions.

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Editor V. Petrash

Compiled by I. Yatsunov Tehred S. Migunova

769/48

Circulation 880 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

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FIG.

Proofreader M. Demchik

Claims (1)

COMPENSATION COUPLING, comprising two coaxially located coupling halves with protrusions at the ends and an intermediate link installed in the axial clearance between them, interconnected by mutually perpendicular flat springs, characterized in that, in order to increase the accuracy of the transmission of movement and reduce the dimensions, the intermediate link is made in in the form of a cross-shaped membrane located in a plane perpendicular to the axis of the coupling, the flat springs are fixed by the ends on the protrusions of the coupling halves, and the ends of the membrane are connected to the middle part of each a leaf spring. Figure 1