SU284524A1 - CAM CLUTCH FOR TRANSFERRING THE ROTATION OF THE SHAFT TO THE SET ANGLES - Google Patents

Description

The invention relates to the field of mechanical engineering and can be applied in metalworking, their machine tools.

Knuckle couplings are known for non-rotation of the shaft at specified angles, the driving coupling half and the non-attached housing with locking elements cooperating with hollows, are made at the end of the driven coupling half. However, these couplings experience significant dynamic loads and vibrations.

The difference of the proposed coupling is that the longitudinal grooves are additionally made at the end of the driven half coupling, and the fixing elements are made in the form of protrusions at the end of the body.

In addition, the knowledge of the coupling half is equipped with a rotary damper mounted on its end.

This embodiment of the clutch provides a reduction of dynamic loads and vibrations, as well as the possibility of operation of the clutch in different modes by adjusting the names for the length.

FIG. 1 shows a sectional coupling; in fig. 2 - driven half-coupling with rotary valve.

The couplings are provided with end cams 4 for engaging with each other. The control element consists of 5, which is screwed into the ring 6, rigidly fastened to the shaft, and into the driven shaft and the power shaft: a 7 (electromagnet, pneumatic cylinder) connected to the housing 8 and acting on the floor driven coupling. U-shaped depressions 9 are made at the end of the driven Iolucoufta 9. a

PA case 8 - the tabs 10. Vedom numufta is equipped with an additional grooves 11,

located near each vpadpny

sides of rotation.

For the reverse coupling the grooves must be

located on both sides of the V-shaped depression. The number of valleys determines the number of fixed positions within one revolution and is limited by the speed of the coupling when switching off and the length of the grooves. The shape of the depressions may vary depending on the operating conditions of the coupling.

The two protrusions 10 are diametrically opposed for a better distribution of axial forces.

The clutch works as follows.

When a signal is given to turn on the knowledge of the half-coupling, under the influence of the power body, it moves to the right, compressing the spring. In this case, the depressions 9 move away from the luminaries 10, and the rotation is transmitted from the leading coupling half to the driven and to the shaft. The gap between the end of the half coupling and the protrusions 10 with the coupling turned on is small and limited only by the technological possibilities of manufacturing the coupling. The small gap size favorably affects the speed when the clutch is turned off.

When a signal is turned off, the power unit ceases to act on the driven i-coupling, and it moves to the left under the action of the springs 5. At the same time, the end of the driven i-coupling will first fall onto the fixed lugs 10 and slide along them, as the driving half-coupling still leads the driven (the cams did not fully reach out of engagement). Then, while rotating the half couplings, groove 11 hits the stationary heights. Since the groove is located at a different level than the end of the half coupling, the driven coupling moves under the action of the spring even more to the left, and its cams break out of the cams of the driving coupling half. Further rotation of the driven half coupling and the shaft and is due to inertia due to the accumulated kinematic energy.

As it rotates, the kinematic energy that the rotating parts of the driven part of the clutch and the associated mechanism have, is quenched as a result of the friction between the grooves and the protrusions. The magnitude of the friction moment, other things being equal, depends on the coefficient of friction between the rubbing surfaces and the force of the spring. Going on

deceleration of the rotating system and by the time of the approach of the depressions .9 to the fixed station 10, the system has a small kinetic energy.

To stop using a coupling of parts with different kinetic energy, the grooves can be made adjustable in length.

Pa nave clutch coupling half

Rotary valve 12, the end of which is flush with the end of the rear coupling half. The flap is sealed to the half coupling by viits 13. By turning the flap, the length of the grooves can be adjusted in steps.

Subject invention

Claims (2)

1. A cam sleeve for transmitting rotation to a shaft at a given angle, comprising a leading coupling half and a fixed housing with locking elements cooperating with depressions formed on the end of the coupling half, characterized in that, in order to reduce dynamic loads and oscillations, at the end of the driven half-muff. Additional longitudinal grooves are made, and the fixing elements are made in the form of protrusions at the end of the Cornus. 2. The coupling according to claim 1, is different in that, in order to enable operation clutches in different modes by adjusting the grooves along the length, the knowledge of the coupling half is equipped with a rotary valve fixed on its end. 8P 3 //