SU1203277A1 - Cam mechanism - Google Patents

Abstract

A cam mechanism comprising a housing, an end cam, a spring-loaded push rod with rollers interacting with it, and a follower link characterized in that. - WTO, in order to increase efficiency and reliability, the mechanism is equipped with an additional case installed in a new case rotatably with respect to it, an additional similar main spring-loaded pusher with a roller, an intermediate link installed coaxially with the driven link and interacting with it, and two connecting rods pivotally connected by one ends with pushers, and others with an intermediate link, butt cam: made disk and pushers are displaced relative to the axis of rotation; ADDITIONAL body V to G with to

Description

The invention relates to mechanical engineering and can be used in the mechanisms for converting rotational movement into Carriage.

The purpose of the invention is to increase K1SC and reliability.

Fig. 1 shows a variant of the cam mechanism with progressively moving pushers; FIG. 2 shows a variant of the cam mechanism with beam-pushing pushers;

The cam mechanism includes a housing 1S in which the additional housing 2 with a disk cam 3, is rotatably disposed. the pushers 4, the suppers 5 of the power locking mechanism, the levers 6, pivotally connected to the intermediate link 7j, which move the slot joint with the output link 8.

The disk cam profile 3 for the cam mechanism variant with progressively double-acting pushers 4 is made by combining Evf with sections 9 providing a positive pressure angle, and sections lOj performing constant zero or negative pressure angle combined with a corresponding displacement of pushors 4

The cam mechanism with progressively moving pushers (Fig. 1) operates as follows. A motor (not shown) causes the cam 3 to rotate, its working surfaces of the sections 9 with a positive pressure angle through the rollers of the pushers 4 transmit rotational movement to the additional body 2 with a slight torque of resistance S acting on the output link 8 or intermediate link | 7, In this case, the levers 6, the intermediate link 7, and the output link 8 remain stationary relative to one other 2032773

Togo. The rotation of the cam 3, thus, with the maximum values of the external C1-III resistance, is not converted,. The B-motion of the tollers 4 and transmitted to the output link 8 is unchanged.

At a sufficiently large moment of external resistance forces acting on high-level link 8 ,. body

 ifl 2 slows down i-shi stops,. and under the action of the working sections 9 of cam E, the pushers move and with; kimut springs 5, thereby jointly moving

15 intermediate link 7 and output link.8. This movement when the kinematic chain opens in the upper chutes of raising the profiles of the disk cam 3 can be used

2nd D.G1Ya strike intermediate link 7 on the output link 8 in the machines of the shock-rotary action. When the pushers move in sections 10, the cam 3 d.

25,

In the version of the cam mechanism with the rim foJIkateli (Fig. 2), the difference in his work lies in the fact that the profile of the cam 3 is not 2Uts combined, and the pushers 4 are made rocker and therefore the positive pressure angle can be obtained close to zero, without supply - movement of the links without converting the cam rotation to reciprocating movement of the link 7 with the transmission of the rotation to the hc link and 8 without changing at a non-decisive torque

.j, resistance With a sufficiently large moment of these forces, the beam-bearing holders 4 compress the springs 5, by rotating them around their axes of rotation, and thereby transmitting

 levers 6 additional rotation output link 8.

Editor A. Vorovich

Compiled by A. Savrchkin

Tehred L. Mikesh Proofreader: I. Erdei

8401/40 Circulation 897 Subscription

VNIIPI USSR State Committee

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

Branch PPP Patent, Uzhgorod, st. Project, 4

Claims (1)

A cam mechanism comprising a housing, an end cam, a spring-loaded follower with rollers interacting with it, and a driven shaft, characterized in that, in order to increase efficiency and reliability, the mechanism is equipped with an additional housing mounted in the main housing for rotation relative to it, additional similar to the main under a spring pusher with a roller, an intermediate link mounted coaxially to the driven link and interacting with it, and two connecting rods pivotally connected at one end from the pusher mi, and others with an intermediate link, the end cam is made disk, and the pushers are offset relative to the axis of rotation of the cu; the latch and are located in the additional housing.