A large-scale cylindricity meter air flotation automatic centering device

Abstract

The invention relates to a large-scale cylindricity meter air flotation automatic centering device. The horizontal projection of the platform is a square. The four corners of the platform are equipped with a single air flotation platform. In addition, the two adjacent corners are respectively equipped with fixed blocks, and the output end of each servo motor is equipped with an air-floating rectangular guide rail. One end of the air-floating rectangular guide rail is directly connected to the output end of the servo motor, and the other end is connected to an air-floating platform. The single unit is connected, the linear motion direction of the output of the two servo motors is orthogonal and vertical, the two air bearing rectangular guide rails are connected to the air source through the air pipe, and the other two air bearing units are connected to the two fixed blocks through the cross shaft slider; Both sides of each air flotation unit are symmetrically installed with connecting blocks, and a coupling connecting rod is arranged between two adjacent air flotation units. connected to the connection blocks above. The invention has simple and reliable structure, high centering efficiency and high 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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