Method of automatically measuring diameter size of hot large free forging

Abstract

The invention discloses a method of automatically measuring the diameter size of a hot large free forging. The method particularly comprises the following steps: A, when an upper anvil and a lower V anvil of a forging hydraulic press are contacted, the position of a movable crossbeam is detected through a displacement sensor, and the position is recorded to be a 0 position, B, a forging blank is placed between the upper anvil and the lower V anvil, the movable crossbeam moves downwardly to enable the upper anvil to be contacted with the forging blank, pressing begins, and when a pressure sensor detects the pressure, the before-forging position H1 is measured and recorded through the displacement sensor; C, forging deformation is over, pressing is stopped, and an after-forging position H2 is measured and recorded; and D, a before-forging diameter D1 and an after-forging diameter D2 for the forging blank are calculated and displayed. The pressure sensor arranged inside a forging machine is used for giving control siganls, the displacement sensor is used for measuring the before-forging and after-forging position data for the forging, the roll blank outer diameter size is determined through formula conversion, and real-time automatic measurement on the hot forging can be realized. The method is simple and easy to operate, high in precision and is applicable to a free forging production environment.

Description

technical field [0001] The invention belongs to the technical field of measurement, and in particular relates to a method for automatically measuring the diameter of a hot large-scale free forging. Background technique [0002] During free forging production, forgings need to continuously measure the size of the forging blank during the forging process, so that it can be deformed to the process size according to the corresponding required parameters. In general, dimensional control mainly depends on manual measurement. However, due to its large size and high temperature, it is difficult for personnel to approach large forgings, and the measurement accuracy is low and the accuracy is poor. In recent years, automatic measurement technology has been used at home and abroad to control the size of large hot forgings, such as linear displacement sensors in Japan, coordinate measuring machines in the United States, and CCD camera measurement technology in Yanshan University in Chin...

AI Technical Summary

Problems solved by technology

In general, dimensional control mainly depends on manual measurement. However, due to its large volume and high temperature, it is difficult for personnel to approach, and the measurement accuracy is low and the accuracy is poor.

In recent years, automatic measurement technology has been used at home and abroad to control the size of large hot forgings, such as linear displacement sensors in Japan, coordinate measuring machines in the United States, and CCD camera measurement technology in Yanshan University in China, etc., but these methods have high investment. , Complicated use, limited measurement range, etc.

Images