FDM 3D프린터 제품의 후열처리를 위한 온도 보정 알고리즘 개발

Abstract

A Temperature Calibration Algorithm for Post-Heat Treatment of FDM 3D Printer Products Kim, SeHyun Advisor : Prof. Moonsoo Kang, Ph.D. Dept. of Computer Engineering, Graduate School of Chosun University

In this thesis, I propose a thermal curing method to increase the usability of FDM (Fuse Deposition Modeling) output among 3D printer manufacturing methods. FDM-type output is a method of laminating thermoplastic resin in the form of a string, interlayer fusion is not sufficient, making it vulnerable to impacts perpendicular to the stacking direction. This problem can be solved depending on the operator's know-how, but depending on the type, it is not easy to solve. In some cases, the problem is solved through other methods such as coating, acetone treatment, or heat treatment. As mentioned above, this thesis seeks to solve the problem through heat curing. However, since the human eye cannot perceive the surface temperature of the processing object during thermal processing, the problem is solved using a thermal imaging sensor. First, the real-time surface temperature of the processing object is recognized through the thermal imaging sensor of the sensor unit, the surface temperature is displayed through a separate calibrated temperature analysis, and an operation signal is sent to the MCU of the control unit to enable thermal processing at a constant speed without thermal deformation. In thermal image temperature recognition using a thermal imaging sensor, the perceived temperature varies due to environmental factors such as the emissivity of the object, measurement distance, and surrounding temperature and humidity. Depending on the shape of FDM output, the distance to the measurement area varies, resulting in a large error range in thermal deformation temperature detection. To solve this problem, this paper proposes a method to increase temperature detection accuracy for a specific temperature zone within the processing range.