SU1281764A1 - Pneumatic motor - Google Patents

Abstract

Invention m. B. used in industrial robots and control systems of flexible automated productions. The aim of the invention is to extend the functionality by ensuring the discreteness of the output shaft of the engine. A device for converting the translational movement of the piston 3 into the rotational movement of the output shaft 1 comprises protrusions 8, 9 interacting with sections 25, 26 of different directions of the spiral grooves made on the glass 7. The glass 7 is rigidly connected to the shaft 1 and reciprocating and longitudinal movement relative to cylinder 2, washers 10, 11 are installed with end teeth 12, 13. Wedges-shaped pushers 14, 15 that are mounted on rod 4 interact with teeth 12, 13. By turning shaft 1 with washer 10 or 1 1 wedge at the entrance New parts pusher. 14, 15 in the hollows between the teeth 12, 13, the accuracy of rotation of the shaft 1 is improved. 2 Il. (L

Description

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The invention relates to mechanical engineering, in particular, to pneumatic actuators, and can be used as a discrete drive in industrial robots, in control systems of flexible automated productions.

The aim of the invention is to enhance the functionality by providing discrete movement of the output shaft of the engine.

FIG. 1 is a schematic diagram of the engine; in fig. 2 is a section A-A in FIG. one.

The GT pneumatic engine comprises an output shaft 1, a cylinder 2 with a piston 3 and a rod 4 installed therein to form working cavities 5 and 6, a device for converting translational movement of the piston 3 into the rotational movement of the output shaft 1, made in the form of a cup 7, a main 8 and additional 9 protrusions, washers 10 and 11 with end teeth 12 and 13 and two wedge-shaped pushers 14 and 15. Glass 7 is rigidly connected to the output shaft 1 and installed in cylinder 2 with the possibility of turning it in relation to it. The stem 4 enters the axial bore 16 of the hub 17 and is kept from rotating relative to the hub 17 by the pushers 14 and 15 installed in the transverse bores 18 and 19 of the rod 4 and fixed by a spring 20 spaced between the pushers 14 and 15 in the axial bore 21 rod 4. Pushers 14 and 15 are passed through the longitudinal grooves 22 and 23 of the hub 17, on which the washer 10 is mounted, connected through the bearing 24 with the washer 11

On the shields 10 and 1 1, the protrusions 8 and 9 are secured, which are included in the spiral groove made of two sections 25 and 26 of the left and right directions. The screw stop 27 is designed to adjust the length L.

The engine works as follows.

By supplying a compressed air pulse Pi to the cavity 6 of the cylinder 2, the piston 3 with the rod 4 moves to the right until it comes into contact with the stop 27. The pusher 14 disengages from the front teeth 12 of the washer 10, and the pusher 15 engages with the teeth 13 of the washer 11. When Further movement of the rod 4, the pusher 15 rests in the cavity between the teeth 13 and begins to move the washers 11 and 10 along the hub. 17. Since the washer 11 is fixed against rotation with respect to the hub 17 by the pusher 15, the protrusion 9 of the washer 11, acting on the spiral groove section 26, rotates the cup 7 with the shaft 1 through a certain angle depending on the stroke length of the piston 3. Simultaneously the washer 10, disengaged by the pusher 14, interacts with the protrusion 8 with section 25

spiral groove and rotates in the opposite direction.

When switching the supply of compressed air pulse P2 to the cavity 5 of the cylinder 2, the piston 3 with the rod 4 moves to the left. The pusher 14 engages with the teeth 12 of the washer 10, and the pusher 15 leaves the engagement with the teeth 13 of the washer 11. The washer 10, interacting with the protrusion 8 with the section 25 of the spiral groove, turns

cup 7 with shaft 1 in the direction of the previous turn. The washer 11 disengaged with the pusher 15 rotates in the opposite direction. The length of the movement of the piston 3 is controlled by the stop 27, and the length of the movement must be such that when the piston 3 moves from the stop to the stop, the teeth of the teeth 12 and 13 of the washers 10 and 11 are located respectively against the followers 14 and 15 (Fig. 2).

However, with the help of the adjusting stop 27 it is practically difficult to set the stroke of the Porsch 3 such that it would provide a strict arrangement of the depressions of the teeth 12 and 13 of the washers 10 and 11, respectively, opposite the pushers 14 and 15. In this case, the accuracy of rotation of the output shaft 1

At a certain angle, it is achieved by the entry of the wedge parts of the pushers 14 and 15 into the cavities between the teeth 12 and 13 and the turning of the output shaft 1 with the help of a washer 10 or 11.

Claims (1)

Invention Formula A pneumatic engine containing an output shaft, a cylinder with a piston and a rod, a device for converting the translational motion of the piston into a raft physical movement of the output shaft, made in the form of a protrusion interacting with a spiral groove on a glass rigidly connected to the output shaft and installed in the cylinder rotation relative to the latter, characterized in that, in order to expand the functionality by providing discrete movement of the output shaft, the transformation device is provided with an additional protrusion, two washers with end teeth installed in the glass with the possibility of rotation of one relative to the other and longitudinal movement relative to the cylinder, two wedge-shaped pushers mounted on the stem with the possibility of interaction with the teeth of the washers, while the spiral groove is made of two sections of th and right directions, and a washer fitted to cooperate with the latter by the main and auxiliary protrusions. / J