SU1000635A1

SU1000635A1 - Cam mechanism

Info

Publication number: SU1000635A1
Application number: SU803007707A
Authority: SU
Inventors: Иван Алексеевич Леонов; Юрий Иванович Никитенко
Original assignee: Научно-исследовательский и экспериментальный институт автомобильного электрооборудования и автоприборов
Priority date: 1980-09-23
Filing date: 1980-09-23
Publication date: 1983-02-28

Description

(54) КУЛАЧКОВЫЙ МЕХАНИЗМ(54) CAM MECHANISM

1one

Изобретение относитс к машиностроению , в частности к кулачковым механизмам .The invention relates to mechanical engineering, in particular to cam mechanisms.

Известен кулачковый механизм, содержащий корпус, установленный в нем пазовый кулачок, взаимодействующий с пазом ролик, св занный с ведомым звеном, элементы поджати , св занные с одними концами упругих элементов и взаимодействующие с роликом. Элемент поджати выполнен в виде разрезного вкладыша, а паз представл ет собой пересекающиес винтовые канавки 1.A cam mechanism is known, comprising a housing, a slotted cam mounted therein, a roller interacting with a groove, a roller connected to the driven member, preload elements associated with one ends of the elastic elements and interacting with the roller. The preload element is designed as a split liner, and the groove is intersecting helical grooves 1.

Однако данный кулачковый механизм отличаетс недостаточно высокой точностью характеристик движени ведомого звена вследствие их искажени в моменты времени , соответствующие изменению направлени движени ролика.However, this cam mechanism is not characterized by a sufficiently high accuracy of the motion characteristics of the slave link due to their distortion at time points corresponding to a change in the direction of motion of the roller.

Цель изобретени - повышение точности характеристик движени ведомого звена .The purpose of the invention is to improve the accuracy of the motion characteristics of the slave link.

Указанна цель достигаетс тем, что в кулачковом механизме, содержащем корпус, установленный в нем пазовый кулачок, взаимодействующий с пазом ролик, св занный с ведомым звеном, элементы поджати , св занные с одними концами упругих элементов и взаимодействующие с роликом, элемент поджати выполнен в виде двуплечих рычагов, в кулачке выполнены диаметрально расположенные направл ющие, механизмThis goal is achieved by the fact that in a cam mechanism comprising a housing, a groove cam mounted therein, a roller interacting with a groove, a roller connected to the driven link, preload elements associated with the ends of the elastic elements and interacting with the roller, the preload element is in the form two shoulders, in a cam diametrically arranged guides, mechanism

5 снабжен плунжерами, установленными в направл ющих , подпружиненными в направлении к центру кулачка и св занными с рычагами и другими концами упругих элементов , а паз представл ет собой спираль Ар )0 химеда.5 is provided with plungers installed in the guides, spring-loaded in the direction towards the center of the cam and connected to the levers and other ends of the elastic elements, and the groove is the helix Ap-0 himed.

На фиг. 1 изображен предлагаемый механизм; общий вид; на фиг. 2-7 - фазы работы механизма.FIG. 1 shows the proposed mechanism; general form; in fig. 2-7 - the phase of the mechanism.

Кулачковый механизм содержит корпус 1, установленный в нем пазовый кулачок 2,The cam mechanism comprises a housing 1, a slot cam 2 mounted therein,

Claims

15 roller 4 interacting with groove 3, associated with the driven link 5, preload elements associated with one ends of the elastic elements 6 and 7 and interacting with roller 4. The preload elements are made in the form of two shoulders 8 and 9, and in cam 2 diametrically arranged guides 10 and 11 are made. The mechanism also includes plungers 12 and 13 mounted in guides 10 and 11, which are spring-loaded in the direction of the center of the cam 2 and associated with levers 8 and 9 and the other ends of the elastic elements 6 and 7. 3 is an Archimedes spiral. The plungers 12 and 13 are spring-loaded springs 14 and 15. The cam mechanism operates as follows. When roller 4 passes through groove 3 of cam 2 at reversal points, it interacts with two shoulders levers 8 and 9. By springing double shoulders levers 8 and 9 with elastic elements 6 and 7 and plungers 12 and 13 with springs 14 and 15, roller 4 is pressed to the side walls of the groove 3. - As a result, the gap between the surface of the roller 4 and the groove 3 of the cam 2 in the reversing areas of the direction of movement of the roller is eliminated. 4. The proposed mechanism can be used in devices for winding the threads to ensure uniform winding throughout the cycle. Claim mechanism, comprising a housing, a cam mounted therein, a roller interacting with a groove, associated with a driven link, preload elements associated with one ends of elastic elements and interacting with a roller, characterized in that in order to improve the accuracy of the movement characteristics the driven member, the preload element is made in the form of double-arm levers, the diametrically arranged guides are made in the cam, the mechanism is equipped with plungers installed in the guides, spring-loaded in the direction and to the center of the cutaway and connected with the levers and other ends of the elastic elements, and the groove is an Archimedes coil. Sources of information taken into account during the examination 1. Acceptance of UK No. 1394898, cl. F 16 H 25/12, 1975 (prototype). cpua.i

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