PLANETARY BALL DRIVE TRANSMISSION UNIT Russian patent published in 2005 - IPC

FIELD: mechanical engineering.

SUBSTANCE: invention can be used in drives of machines and mechanisms of wide application. Proposed transmission unit contains three disk members, one disk member 1 is fitted on eccentric 2 and two coaxial members of which support member 5 is coupled with housing and outlet member 7 is coupled with output shaft. Members 1, 5, 7 interact through chain of balls 9 arranged in periodical race ways ob corresponding surfaces of outlet member 7 and support member 5 pointed to each other. Race way 8 of member 7 is closed one. Race way 5 of member 5 is interrupted, consisting of grooves uniformly spaced over circumference. Each groove is made closed and toroidal with radius of rotation of circumference generatrix equal to radius of ball 9, and distance to axis of rotation equal to eccentricity of transmission unit.

EFFECT: provision of uniform movement of balls and reduction of wear.

5 dwg