Air floatation automatic aligning device for large cylindricity instrument

Abstract

The invention relates to an air floatation automatic aligning device for a large cylindricity instrument. The horizontal projection of a platform is square, air floatation table single bodies are arranged at the four corners of the platform respectively, servo motors installed on the platform are arranged at the two adjacent corners of the platform respectively, and fixing blocks are installed atthe other two adjacent corners of the platform respectively. An air floatation rectangular guide rail is arranged at the output end of each servo motor, one end of each air floatation rectangular guide rail is directly connected with the output end of the corresponding servo motor, the other end of each air floatation rectangular guide rail is connected with one air floatation table single body, the output linear motion directions of the two servo motors are orthogonal and perpendicular, and the two air floatation rectangular guide rails are connected with an air source through air pipes. Theother two air floatation table single bodies are connected with the two fixed blocks through cross shaft sliding blocks; connecting blocks are symmetrically installed on the two sides of each air floatation table single body, a coupling connecting rod is arranged between every two adjacent air floatation table single bodies, and the two ends of each coupling connecting rod are connected with the connecting blocks on the two adjacent air floatation table single bodies respectively. The device is simple and reliable in structure, high in aligning efficiency and high in precision.

Description

technical field [0001] The invention belongs to the field of large-scale cylindricity instruments, in particular to an air-floating automatic centering device for large-scale cylindricity instruments. Background technique [0002] In the manufacture of high-quality products and the construction of an efficient production environment, measurement technology plays a key role, and its importance is increasing day by day. Large-scale high-precision cylindricity instrument is used as a key measuring instrument for measuring the roundness, cylindricity, coaxiality and other shape and position errors of rotating workpieces such as rings and cylinders, and is widely used in automotive, aerospace and other fields. Especially in today's rapid development of production internationalization and global economic integration, in order to achieve good interchangeability of high-precision parts, it is required that high-precision cylindricity instruments must have higher measurement accuracy...

AI Technical Summary

Problems solved by technology

[0007] There are several types of centering for large floor-standing workpieces. One is to manually adjust the center of the circle to remove the eccentricity, which is time-consuming, laborious, difficult, and low in accuracy; the other is the large chuck type, which adjusts the eccentricity of the workpiece circle through different jaw movements on the chuck. Due to the heavy workpiece and high friction force, the chuck structure requires very high strength, which will cause friction damage to the end surface of the workpiece; there is also a two-layer vertical and orthogonal guide rail slider mechanism, which is driven by a servo motor or a stepping motor to achieve adjustment. The disadvantage is that the structure is complex, the double-layer guide rail slider and many fixed connectors, the cumulative error is large, especially affecting the flatness of the positioning platform

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