Calibration method, device and three-dimensional object manufacturing device for multi-zone heating device

Abstract

A calibration method, device, and three-dimensional object manufacturing equipment for a multi-zone heating device, wherein the calibration method includes: acquiring the temperature of a reference point and several detection points, comparing the temperature of several detection points with the temperature of the reference point, and comparing the temperature The detection point higher than the reference point is recorded as a high temperature detection point, and the detection point whose temperature is lower than the reference point is recorded as a low temperature detection point; the output power of the heating tube corresponding to the high temperature detection point is reduced, and then the corresponding temperature of all detection points is increased. The output power of the heating tube; or increase the output power of the heating tube corresponding to the low temperature detection point, and then reduce the output power of the heating tube corresponding to all detection points; obtain the reference point and the temperature of several detection points in the working area, when all When the difference between the temperature of the detection point and the temperature of the reference point is within the allowable range, the calibration is completed. The invention can automatically adjust the output power of the heating tube to ensure that the temperature of each point in the working area is consistent during each molding process.

Description

technical field [0001] The present application relates to the technical field of additive manufacturing, in particular to a calibration method and device for a multi-zone heating device and a three-dimensional object manufacturing device. Background technique [0002] Additive manufacturing technology is an advanced manufacturing technology with distinctive features such as digital manufacturing, high flexibility and adaptability, direct CAD model drive, fast speed, and rich and diverse material types. tooling mold, so the application range is very wide. Selective Laser Sintering (SLS) is one of the fastest-growing additive manufacturing technologies in recent years. [0003] The basic process of selective laser sintering is: install a multi-zone heating device above the area to be formed to preheat the powder in the area, so that the powder in the area reaches a relatively uniform and stable temperature, and then the scanning system (galvanometer) according to the three-di...

AI Technical Summary

Problems solved by technology

At present, the output power of each component of the mainstream multi-zone heating device is fixed, and it cannot be flexibly adjusted according to the changes in the molding cavity. At the same time, the output power of the heating device must be attenuated to a certain extent after long-term use, and the attenuation degree of each component is not the same.

Due to the existence of the above situation, the stability of the heating device will be affected to a certain extent with the increase of the use time, which will eventually lead to a decline in the quality of the molded parts

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