ROTATIONAL MOVEMENT CONVERTER Russian patent published in 2013 - IPC F16H25/06 F16H13/08 

FIELD: machine building.

SUBSTANCE: rotational movement converter includes drive and driven shafts and a fixed reaction disc with a radial slot. Disc-cam with a slot, which represents a drive link, is rigidly attached to the drive shaft. Drive disc with a slot, which represents a driven link, is rigidly attached to the driven shaft. Drive and driven links, as well as the reaction disc, interact by means of a connecting link in the form of a rotation body. Drive link slot is curved and it has along the middle line the appearance of a composite closed figure consisting of two pairs of adjacent sections in the form of arcs with variable curvature and arcs with constant curvature. Driven link slot is made in the form of an asymmetric shape with the section made in the form of an arc with variable curvature with angular length of 180°. For drive link, two sections of the slot with constant curvature have different radii of arc R₂>R₁ with common centre. For driven link, middle line is an arc of logarithmic spiral, for which dependance of current value of radius vector R on angle φ of its turn is described with the following expression: R=R₁*exp(b₂*φ), where spiral parameter b₂=In(R₂/R₁)/180°.

EFFECT: enlarging kinematic possibilities of the device.

3 cl, 10 dwg