Tool and method for assembling three-block dynamic pressure bearing

Abstract

The invention relates to a tool and a method for assembling a three-block dynamic pressure bearing. An axial hole and two groups of radial holes which are uniformly and symmetrically distributed at 120 degrees in the circumference are formed in the center of a body housing of the tool, wherein a mandrel and sliding columns are respectively connected in the axial hole and the radial holes in a sliding manner; the lower ends of the two sliding columns are in contact connection with two conical surfaces which are arranged on the mandrel and have the same taper; the mandrel is connected with a hand wheel through a screw with an annular groove; the screw with the annular groove is connected with a screw in a screw plug in the left end of the body housing in a matched manner; a measuring head isconnected in a square hole in the right end of the mandrel in a sliding fit manner; one end of the measuring head is fixedly connected with a measuring block, and an arc surface is arranged at the other end of the measuring head; a reference plane is arranged at the right end of the mandrel and is perpendicular to the square hole in the mandrel; a measuring surface is arranged at the upper end ofthe measuring block; and the center of the end face of the right end of the mandrel is in threaded connection with a locking screw for locking the measuring head. The tool is simple in structure andconvenient to use, and the three-block center of a dynamic pressure shaft system of a grinding carriage can meet the assembling requirement of the dynamic pressure bearing by one-time measurement andone-time grinding.

Description

technical field [0001] The invention relates to a tool for assembling a sliding bearing, in particular to a tool for assembling a three-tile dynamic pressure bearing. Background technique [0002] Every part of the machine that rotates needs to be supported. This support is also called a bearing. According to the friction properties, bearings can be divided into two categories: rolling bearings and sliding bearings. Liquid sliding bearings can be divided into hydrodynamic bearings, hydrostatic bearings and hydrodynamic and hydrostatic bearings. Hydrodynamic bearings have a long history, and its application has been studied for more than 100 years. In 1934, the United States first used dynamic pressure oil film bearings on cold rolling mills. In the 1970s, my country began to study hydrodynamic and static pressure bearing technology, and began to popularize and apply it on mechanical devices such as metal cutting machine tools. So far, the sliding bearings used on grindin...

AI Technical Summary

Problems solved by technology

In the assembly process, in order to ensure the high rotation accuracy of the main shaft, it is generally required that the center of the inner arc surface of the three tiles is concentric with the center of the bearing seat hole of the wheel frame shell, and each dynamic pressure tile assembled is measured by direct measurement. The center of the arc surface is measured, the measuring tools are complex, the operation is cumbersome, and the implementation is difficult. It is urgent to use the indirect measurement method to design a tooling to solve this technical problem.

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