Middle-small modulus gear high-frequency hardening production line automatic control system and method

Abstract

The invention provides an automatic controlling system and controlling method for a hi-frequency hardening production line for middle- / small-modulus gears, which comprises a PLC host, an AD and DA functional module and a touch screen. After an input terminal of the PLC host and the AD module collect and process signals from the production line, an output terminal and the DA functional module control the links in the production line, so as to achieve real-time controlling of the production line. The invention is of two modes, namely automatic and manual. The touch screen allows real-time monitoring while adjusting the process parameters easily, making statistics about output of current shift and accumulated output, recording production, and displaying alarm. The invention is of high automation, can accurately control the hardening temperature of gears, improve obviously product quality and output, also improves the work environment, lightens labor intensity of workers, reduces production cost, and is especially suitable for massive production.

Description

(1) Technical field [0001] The invention relates to an automatic control system and a control method for a high-frequency quenching production line of medium and small modulus gears, and belongs to the technical field of gear high-frequency quenching processing. (2) Background technology [0002] Gear induction hardening in my country has a glorious history as a heat treatment process for hard tooth surfaces. A large number of machine tool gears, automobile and tractor gears, mining machine gears and general reducer gears all use induction hardening, corresponding high-frequency power supplies and various hardening machine tools. It is also relatively supporting. In the late 1990s, a solid-state high-frequency induction heating power supply was developed and can realize the numerical control of the quenching machine tool. At present, several domestic high-frequency equipment companies have supplied induction hardening machine tools with their leading product solid high-frequency ...

AI Technical Summary

Problems solved by technology

At present, there are several high-frequency equipment companies in China that supply induction hardening machine tools with their leading products, solid-state high-frequency induction heating power supplies, and provide online technical services. The processing methods adopted are: quenching machine tools are mostly controlled by PLC, gear surface quenching process The parameters are stored in the PLC in the form of a program, and the timing heating method is generally used. There is no infrared temperature measurement system, and the quenching temperature cannot be accurately controlled.

In addition, its production line mainly relies on manual loading and unloading, the labor intensity of the workers is high, the work efficiency is low, the working environment is harsh (the quenching liquid volatilizes toxic substances), it is harmful to human health, the degree of automation is low, and the product quality is difficult to control

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