Detection device and method for arc voltage adjustment control system of plasma cutting machine

Abstract

The invention discloses a detection device and method for an arc voltage adjustment control system of a plasma cutting machine. The detection device comprises a relatively independent arc voltage signal simulation system and an arc voltage adjustment control system, wherein the arc voltage signal simulation system comprises an adjustable DC power source, an arc striking signal detector, an arc striking signal indicator and a feedback signal simulator; the arc voltage adjustment control system comprises a control level logic detector and a final arc voltage signal detector; and the adjustable DC power source simulates and outputs an arc voltage signal to ensure the separation of the practical cutting process of the plasma cutting machine to be detected and a plasma power source to be detected, so as to ensure that the detection process is accurate, reliable and smooth. Therefore, the sectionalized and step-by-step detection way is more accurate and quicker, and greatly facilitates later maintenance process. The detection method is suitable for the plasma cutting machine.

Description

Technical field [0001] The invention relates to a detection device and a detection method of a plasma cutting machine, in particular to a detection device and a detection method of an arc voltage height adjustment system of a plasma cutting machine, and belongs to the field of industrial detection equipment. Background technique [0002] The plasma cutting machine must be used in conjunction with a plasma power supply to complete the plasma cutting of metal plates. The plasma power supply is mainly used to provide the power supply for generating the plasma arc. At the same time, it collects and feeds back the arc voltage signal to the host of the plasma cutting machine, and cooperates with the plasma cutting machine to complete the cutting process. As a single supporting product, its manufacturers and sources are wide, and the quality is also uneven. Since the size of the arc voltage signal output by the plasma power supply will change with the height of the torch, the plasma cu...

AI Technical Summary

Problems solved by technology

To judge whether the arc voltage signal input to the plasma cutting machine is normal, the cutting machine must be allowed to perform actual cutting, and once the arc voltage height adjustment system does not work normally, it is difficult for the cutting machine to start cutting, thus affecting the subsequent arc voltage signal production

Moreover, the working environment of the plasma cutting machine is generally harsh, and the core components of the height adjustment system composed of electronic components - the height adjustment circuit board and the arc voltage signal divider board are also prone to failure

Due to such problems, when the arc voltage height adjustment system of the plasma cutting machine is abnormal, it is difficult to determine whether the arc voltage height adjustment system of the cutting machine itself is faulty or the arc voltage signal of the plasma power supply is abnormal. If it is not correctly input into the cutting machine, it will affect the work, especially for the portable plasma cutting machine. The lack of necessary technical basis and detection means, coupled with the complexity of the cause of the fault in the arc voltage height adjustment system and the difficulty of distinguishing the fault location, make it difficult to solve this fault quickly, which seriously affects the normal use of the cutting machine

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