SU1739148A1 - Intermittent motion gear train - Google Patents

Abstract

The invention relates to mechanical engineering and can be used to convert a continuous rotational motion into intermittent. The goal is to expand technological capabilities. The intermittent gearing gear comprises a half-eared driving wheel 4, made in the form of kinematically connected sectors 5 and 6, a driven wheel 10 consisting of a crown 12 and a hub 11, and an elastic element 13. The driving wheel 4’s sectors 5 and 6 are mounted coaxially, the sector 5 is rigidly fixed on the shaft 2, and sector 6 - with the possibility of circumferential displacement relative to the first and fixation. The crown 12 of the driven wheel 10 is made in the form of double-row bushing-finger links. The sectors 5 and 6 of the drive wheel 4 are in engagement with the driven wheel 10, and the elastic element 13 is associated with the crown 12 and the hub 11 of the latter. 2 hp f-ly, 2 ill.

Description

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FIG. 1 l1

The invention relates to mechanical engineering and can be used to convert a continuous rotational motion into intermittent.

A known mechanism with adjustable intermittent rotational movement, in which the drive gear is made in the form of two half-toothed wheels, one of which has a groove and is rigidly fixed to the drive shaft, and the other is equipped with a stop interacting with the groove of the first wheel, and is mounted on the same shaft freely.

A disadvantage of the known mechanism is that the adjustment of the rotation angle is carried out within insignificant limits, which limits its scope. In addition, the implementation of the mechanism without compensator reduces its reliability.

The purpose of the invention is to expand technological capabilities and increase reliability.

This goal is achieved by the fact that in a gear mechanism of intermittent motion, containing a leading half-toothed wheel, made in the form of two kinematically connected sectors, the first of which is rigidly mounted on the shaft, and the driven wheel, made in the form of a crown and the hub, wherein the second sector is mounted coaxially to the first with the possibility of relative rotation, and the mechanism is provided with an elastic element associated with the crown and hub. The crown of the driven wheel can be made in the form of double-row sleeve-finger links. In addition, grooves are made in the crown and hub, and the elastic element is made in the form of a cylindrical spring located in the said grooves.

The use of a new interrelation between the two sectors provides for the expansion of technological capabilities, and the presence of an elastic element improves reliability.

FIG. 1 shows a gear mechanism, a general view; in fig. 2 shows section A-A in FIG. one.

The intermittent motion gear mechanism includes a housing 1 in which shafts 2 and 3 are mounted on bearings (Fig. 1). The shaft 2 is fixed with an incomplete gear 4, made in the form of sectors 5 and 6. Sector 5 is rigidly connected with shaft 2, and sector 6 is mounted coaxially with sector 5 and can be adjusted relative to each other by means of grooves 7, holes 8 and stoppers 9. Sectors 5 and 6 interact with the driven wheel 10. The driven wheel 10 consists of a hub 11 rigidly mounted on a shaft 3 and a gear ring mounted on the hub 10 with the possibility of coaxial rotation.

The tooth of the crown 12 is made in the form of double-stub sleeve-finger links. For

To reduce the maximum loads, an elastic compensator 13 located in the slots 14 and 15 of the hub 11 and crown 12 serves. The compensator 13 is fixed with the help of a pin 16 located on the hub 11 and a tie

0 17 passing through the crown 12.

Gear mechanism works as follows.

A predetermined period of operation of the mechanism is established, for which sector 6 is oriented with its grooves 7 relative to one of the pairs of holes 8 of sector 5. Further adjustment of the period of operation of the mechanism is performed by shifting sector 6 relative to sector 5 within grooves 7 and fixed by stoppers 9. Uniform rotation of shaft 2 relative to the housing 1, the shaft 3 rotates with stops through the interaction of the half-toothed wheel 4 with the driven wheel 10. When the shaft 2 rotates, all the teeth of sectors 5 and 6 of the half-toothed wheel 4 during operation cycle of the torque transmitting wheel 10, which at the beginning of the movement torque transmits part of the sector of teeth 5,

0 and at the end - part of the teeth of sector 6.

During the engagement of the incomplete tooth 4 with the driven wheel 10, maximum loads occur on the first tooth, which are eliminated by

5 of the elastic compensator 13. At the initial moment of engagement of the wheel 4 with the driven wheel 10, the crown 12 rotates relative to the hub 11, while the pin 16 moves along the grooves 14 and 15 and stretches the elastic

0 compensator 13 fixed on the clamp 17.

The rotational moment from the shaft 2 to the shaft 3 is transmitted during the stop of the pin 16 to the hub 11, with several teeth of the crown 12 of the half-toothed wheel 4 participating in the engagement.

The use of the invention will allow the mechanism to be configured for various periods of shutdown without disassembling, which not only expands the technological capabilities of the mechanism, but also reduces the setup time.

Claims (1)

The invention is a gear mechanism of intermittent motion, comprising a leading half-toothed wheel, made in the form of two kinematically connected sectors, the first of which is rigidly mounted on the shaft, and a driven wheel, made in the form of a crown and hubs, characterized in that, in order to expand technological capabilities, the second sector is aligned with the first sector and subsequent fixation, the crown of the driven wheel is mounted on the hub with the possibility of relative rotation, and the mechanism is provided with an elastic element associated with relative to it in the circumferential direction 5 of the crown and hub.