Online fault monitoring method for holding-up hammers of hinge press

Abstract

The invention provides an online fault monitoring method for holding-up hammers of a hinge press. The method comprises the following steps: monitoring construction safety of a holding-up hammer of a belt-type press or a holding-up hammer of a cubic press, and mounting sensors in an acoustic emission assembly on each holding-up hammer of the hinge press; monitoring whether an acoustic emission signal is generated by the holding-up hammer in real time by the acoustic emission assembly; acquiring signals by each sensor of an event group, and transmitting the signals into a host for processing so as to generate the event group; judging a pressure signal value, an acoustic emission signal impact time difference and the mean value of energy of the acoustic emission signal in each channel; and performing holding-up hammer cracking alarm on the press. According to the method provided by the invention, the false alarm rate and misreporting rate of faults of the holding-up hammer can be effectively and reliably reduced, online monitoring is accurately realized, and a damaged probe can be timely discovered and replaced; meanwhile, the manual labor and cost of money can be saved, and accidents and economic losses caused by the faults of the holding-up hammer are avoided; and the operating safety and reliability of the belt-type press or the cubic press are guaranteed.

Description

technical field [0001] The invention relates to the field of acoustic emission on-line monitoring, in particular to an on-line fault monitoring method for a top hammer of a press machine. Background technique [0002] As the hardest material among known natural substances, diamond has many excellent characteristics, such as wide band gap, superhard properties, high insulation, extremely low thermal expansion coefficient and good chemical inertness, etc., so it is an important functional material It is widely used in optoelectronic information, microelectronic processing, precision cutting instruments, optical window materials, etc. Diamond is mainly divided into two types: natural and synthetic. Two-sided and six-sided presses are common synthetic diamond preparation machines. The principle is to convert graphite-phase carbon into diamond-phase carbon under high temperature and high pressure. Since the anvils in contact with graphite in the production process need to work u...

AI Technical Summary

Problems solved by technology

Since the anvils in contact with graphite in the production process need to work under high-pressure stress for a long time, it will cause stress fatigue and crack damage, and the damage of a certain anvil will break the previous equilibrium state and cause other normal anvils to collide , resulting in additional economic losses

[0003] At present, in the production process, skilled workers are required to monitor the top hammer of the two-sided or six-sided top press, and use experience to deal with it in time when the instrument is abnormal. This method consumes manpower and may cause leakage due to negligence. report phenomenon

Images