An On-Line Measuring System for Inner Diameter of Large Thin-walled Parts

Abstract

The invention discloses an on-line measurement system for the inner diameter of a large thin-walled part, comprising: a fixed support arranged on the shaft of a boring bar of a special boring machine, on which a thin-walled part to be measured is placed; a laser displacement sensor, a laser The rear end of the displacement sensor is fixed on the fixed support, and the front end of the laser displacement sensor is provided with a sensor head, and the laser displacement sensor is located in the thin-walled part; the control module is connected with the laser position sensor, and is used for: controlling the laser displacement sensor on the thin-walled part; The measuring point on the inner wall of the wall part is measured to obtain a first distance from the sensing head to the measuring point; based on the first distance, the second distance and the preset included angle, the inner diameter of the thin-walled part is obtained. The invention achieves the technical effect of quickly and accurately measuring and calculating the inner diameter value at any axial position when the inner diameter of a large thin-walled part is measured online, which not only improves the measurement accuracy, but also improves the work efficiency.

Description

technical field [0001] The invention relates to the technical field of part processing, in particular to an online measurement system for the inner diameter of a large thin-walled part. Background technique [0002] In actual production, there are many large parts, such as a large thin-walled part with a length of 3000mm and an outer diameter of φ1300mm. The straightness of the inner hole is required to be 0.2 and the roundness to be 0.1. For such parts, the internal surface turning process can adopt CNC horizontal lathe and CNC vertical lathe. If a CNC vertical lathe is used, limited by the travel of the ram of the machine tool, for a cylinder with a length of more than 1500mm, a vertical lathe with a diameter of more than 5 meters is required. According to the external dimensions of the cylinder, the corresponding vertical lathe will be larger, and the cost will increase and the efficiency will increase. Low; if the CNC horizontal lathe is used, the strength of the cutter...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides an online measurement system for the inner diameter of large thin-walled parts, which solves the technical problem of large errors in the online measurement of the inner diameter of large thin-walled parts in the prior art, and realizes the measurement of the inner diameter of large thin-walled parts. During online measurement, it can quickly and accurately measure and calculate the inner diameter value of any axial position, which not only improves the measurement accuracy, but also improves the technical effect of working efficiency

Images