A three-degree-of-freedom support ball bearing

Abstract

The invention discloses a three-degree-of-freedom fulcrum ball bearing. Through holes are formed in the middles of a middle plate, a lower plate and an upper plate; a middle connecting shaft penetrates through the through hole of the middle plate, and the two ends of the middle connecting shaft penetrate through the through holes in the middles of the lower plate and the upper plate correspondingly, extend to the exterior of the lower plate and the upper plate, and are fixed through connecting shaft nuts; four concave holes are formed in each of the upper surface and lower surface of the middle plate, four concave holes in the upper surface of the middle plate are corresponding to four concave holes in the lower surface of the middle plate; four through holes are formed in each of the upper plate and the lower plate, and the positions of the through holes are corresponding to the positions of the concave holes of the middle plate; and through holes in the upper plate and the lower plate are internally provided with rolling mechanisms, the rolling mechanisms are arranged symmetrically, and the lower parts of steel balls of the rolling mechanisms are arranged in the concave holes ofthe middle plate in a corresponding mode. The three-degree-of-freedom fulcrum ball bearing can be applied to be connected with a large platform with relative motion, the carrying capacity is high, themotion precision is high, and the height dimension of the platform can can be controlled in a smaller range.

Description

technical field [0001] The invention relates to a ball bearing, in particular to a three-degree-of-freedom support ball bearing. Background technique [0002] In the field of industrial assembly, an integrated assembly platform is usually used for the assembly of large machines. The moving platform of the integrated platform has several degrees of freedom relative to the fixed platform to meet the posture adjustment requirements of the assembly during the assembly process. With the continuous development of large-scale equipment in industrial production, higher requirements are put forward for the carrying capacity, motion accuracy and dimension height of the assembly platform. In the past, guide rails were often used in series for the connection between platforms, but it was impossible to further improve the height of the attitude control platform. A breakthrough has been made in controlling the height and size of the platform, which is suitable for engineering practice in...

AI Technical Summary

Problems solved by technology

In the past, guide rails were often used in series for the connection between platforms, but it was impossible to further improve the height of the attitude control platform. A breakthrough has been made in controlling the height and size of the platform, which is suitable for engineering practice in narrow height spaces

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