Device, system and method for on-site measurement of inner wall dimensions of large rotary workpieces

Abstract

The invention discloses a measuring device of the inner wall size of a large rotary workpiece. The device comprises a pedestal, a mounting frame, a rotary mechanism, a longitudinal moving mechanism, a transverse moving mechanism, a leveling mechanism and a laser displacement sensor, wherein the pedestal is used for supporting other parts of the device; the mounting frame is used for mounting the device on a workpiece to be measured; the rotary mechanism is arranged between the pedestal and the mounting frame and used for driving the laser displacement sensor to rotate on the horizontal plane; the longitudinal moving mechanism is used for adjusting the position of the laser displacement sensor in the vertical direction; the transverse moving mechanism is used for adjusting the distance of the laser displacement sensor relative to a workpiece measuring point in the horizontal direction; the leveling mechanism is used for adjusting the posture of the laser displacement sensor to enable laser beams emitted by the laser displacement sensor to horizontally illuminate the workpiece measuring point; and the laser displacement sensor is used for measuring the distance from the workpiece measuring point to the sensor. The invention also provides a measuring system and a measuring method based on the measuring device. The space coordinates of the measuring point are determined through laser triangulation theory, so that the measuring precision is high; and the measuring position can be automatically adjusted. The device, the system and the method are suitable for field measurement of various large rotary shell parts.

Description

technical field [0001] The invention belongs to the field of advanced measurement technology and aims to provide an on-site measurement device, system and method for the inner wall size of a large rotary workpiece. Background technique [0002] With the continuous development of modern manufacturing and processing technology, the application of large rotary workpieces is becoming more and more extensive, and with the continuous improvement of machine tool machining accuracy, higher requirements are put forward for the measurement of large rotary workpieces. [0003] For large and complex curved workpieces, the size is often huge and the surface conditions are complex, so traditional measuring machines cannot be used to measure them. Moreover, for large rotating workpieces with inner cavities, traditional contact measuring machines cannot go deep into the inner cavity. Take measurements. For example, large rotary workpieces such as power generation equipment and pressure ves...

AI Technical Summary

Problems solved by technology

[0004] At present, the measurement of rotary workpieces is often carried out in an offline fixed-point manual manner after the workpiece is processed. This detection method is highly subjective for the operator, and it is easy to cause missed inspections. Moreover, the offline measurement method also leads to the production process of the entire workpiece. Long, low production efficiency, high production cost and other issues

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