Center-adjustable ball spherical hinge joint and center adjusting method of center-adjustable ball spherical hinge joint

Abstract

The invention discloses a center-adjustable ball spherical hinge joint and a center adjusting method of the center-adjustable ball spherical hinge joint. Due to machining and assembling errors, a spherical hinge joint is in an eccentric state usually. Supporting ball guide holes are formed in a supporting ball socket of the ball spherical hinge joint. A displacement sensor is installed in a sensor installation hole of the supporting ball socket. Restraining ball guide holes are formed in a restraining ball socket. Double-thread center adjusting mechanisms are installed in the supporting ball guide holes and the restraining ball guide holes to adjust ball steel balls. The center adjusting method includes the steps that the center-adjustable ball spherical hinge joint is installed; when the double-thread center adjusting mechanisms are installed, main threaded columns and auxiliary threaded columns rotate in the opposite directions, and the restraining ball steel balls and the supporting ball steel balls are quickly located; and when centering adjustment is conducted by the double-thread center adjusting mechanisms, the main threaded columns and the auxiliary threaded columns rotate in the same direction. The double-thread structures rotate in the opposite directions when the eccentric error is relatively large, and the eccentric error is quickly reduced; and the double-thread structures rotate in the same direction when the eccentric error is relatively small, and the centering condition of the balls and the ball sockets are finely adjusted.

Description

technical field [0001] The invention belongs to the field of ball and ball joints, and in particular relates to an adjustable centering ball and ball joint and a centering method thereof. Background technique [0002] The ball joint is a three-degree-of-freedom mechanical joint with compact structure and flexible movement. It is gradually being widely used in many fields such as robots, parallel mechanisms, automobiles, and motors. [0003] The rolling ball joint adopts the distribution of ball steel balls between the ball head and the ball socket, and the sliding contact between the ball head and the ball socket is converted into the rolling contact between the ball head and the ball steel ball and the ball socket and the ball steel ball, thereby Reduce the friction between the ball head and the ball socket, but because the rolling contact position between the ball head and the ball steel ball is a contact point, the contact stress is concentrated, resulting in a large Hert...

AI Technical Summary

Problems solved by technology

Due to processing and assembly errors, the ball joint is usually in an eccentric state. At the same time, under the long-term movement of the ball joint, the wear of the ball head and the ball socket will cause the gap between the ball head and the ball socket to increase, and the motion accuracy will decrease. The hinge joint cannot meet the motion accuracy requirements of high-precision occasions

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