Molten pool light intensity detection device with multiple detection heads detecting in partition manner

Abstract

The invention provides a molten pool light intensity detection device with multiple detection heads detecting in a partition manner, which comprises a laser light source, a working platform and detection modules, and is characterized in that the laser light source is located right above the working platform, the working platform is used for carrying metal to be detected, an area to be detected atthe surface of the working platform is divided into a plurality of square subareas which are the same in area and provided with different serial numbers, the number of the detection modules is the same as that of the square subareas, each detection module comprises a detection head, each detection head is located above the working platform, a connecting line between one detection head and the center of the corresponding square subarea is parallel to an axis of the detection head, the distance between each detection head and the center of the corresponding square subarea is the same, and an included angle between each connecting line and the working platform is identical; and the detection heads receive molten pool light, convert the received molten pool light into digital signals and thentransmit the digital signals to an external operating system. The molten pool intensity detection device can accurately detect molten pool light signals in the laser processing process in real time.

Description

technical field [0001] The invention designs a laser processing and manufacturing monitoring technology, in particular a melting pool light intensity detection device for multi-detection head partition detection. Background technique [0002] Melting pool light intensity detection is a method of melting pool monitoring. By detecting the melting pool light intensity in the process of material melting, the current molten pool area, temperature and other information can be reflected in real time. However, whether the current light intensity detection device is installed on-axis or off-axis, the relative distance between the light source and the detection device and the angle of light incident on the detection device will affect the detection results, especially when the molten pool light source moves at high speed and the molten pool area is small , the error caused by the difference in the relative distance between the light source and the detection device and the angle of inc...

AI Technical Summary

Problems solved by technology

Foreign commercial equipment used in laser processing, such as EOS, CONCEPT LASER, etc., also integrates molten pool detection devices, which can detect molten pool information in real time, but these monitoring devices also have positions when detecting optical signals at different molten pool positions. error

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