Electric current and gas control system and method of fine plasma cutting machine
A plasma cutting machine and control system technology, applied in the field of plasma cutting power supply control, can solve the problems of poor cutting quality, low degree of digitization, insufficient control precision, etc., and achieve the effect of improving control precision, system response performance and quality.
Inactive Publication Date: 2015-09-09
UNIV OF JINAN
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a fine plasma cutting power supply control system, mainly aiming at the problems of low digitization degree, insufficient control precision and poor cutting quality in the current plasma cutting machine, by adopting a digital controller to improve the control precision and System response performance, combined with process requirements to carry out dynamic real-time tracking and adjustment of cutting current, and establish a plasma cutting process expert database to meet market requirements, the present invention specifically designs a fine plasma cutting power supply control system
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[0033] Below in conjunction with accompanying drawing, the present invention is described in detail:
[0034] Such as figure 1 As shown, a current and gas control system of a fine plasma cutting machine includes a human-machine interface touch screen 1, a solenoid valve 2, a programmable controller PLC host 3, an analog input 4, a pressure sensor 5, a numerical control system 6, and a main contact 7, arc ignition relay 8, high-frequency transformer relay 9, chopper relay 10, PLC slave machine 11, start 12, stop 13, current sensor 14, analog input 15, analog output 16, chopper Oscillator relay 17, self-test sensor 18.
[0035] The PLC host 3 of the programmable logic controller is installed inside the gas console operation cabinet, and the programmable controller PLC slave 11 is installed inside the main power control box. What is selected is OMRON CP1H, with high module integration, small size, and CPU Fast running speed, ample memory, rich range of software components, buil...
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The invention discloses an electric current and gas control system and an electric current and gas control method of a fine plasma cutting machine. The electric current and gas control system of the fine plasma cutting machine is characterized in that a PLC (programmable logic controller) host is installed in a gas console operation cabinet of the fine plasma cutting machine, a digital output end of the PLC host is connected with an electromagnetic valve in a gas circuit of the fine plasma cutting machine, an analog input end of the PLC host is connected with a four way pressure sensor in a gas circuit in a gas console, a PLC slave machine is installed in a power master control box of the fine plasma cutting machine, a digital input end of the PLC slave machine is connected with all circuits of sensor signals in a starting self test of the fine plasma cutting machine, and a staring key and a shutdown key of the fine plasma cutting machine, a digital output end of the PLC slave machine is connected with a main contactor, an arc striking relay, a chopper relay and a high frequency transformer relay in the power master control box of the fine plasma cutting machine, an analog input end of the PLC slave machine is connected with an arc striking circuit current sensor and a cutting circuit current sensor of the fine plasma cutting machine, and an analog output end of the PLC slave machine is connected with a chopper in the power master control box of the fine plasma cutting machine.
Description
technical field [0001] The invention relates to the technical field of fine plasma cutting power supply control, in particular to a current and gas pressure flow control system and method of a plasma cutting machine. Background technique [0002] With the technological progress of CNC cutting machines and the improvement of cutting processing efficiency and precision requirements of production enterprises, the traditional air plasma cutting process is increasingly unable to meet the needs of customers. As a big manufacturing country, China currently has almost zero enterprises engaged in the research and production of fine plasma cutting power supplies. At present, the two companies with the strongest technical strength in the world are German Kelberg and American Haibao. The main feature of their products is the precise control of current, gas ratio, gas flow and gas pressure. [0003] At present, there are many manufacturers producing inverter-type air plasma cutting powe...
Claims
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Login to View More IPC IPC(8): B23K10/00
CPCB23K10/00
Inventor 李国平付玉俭曹奇姜春东孙选艾长胜王帅
Owner UNIV OF JINAN