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工程设计学报
Chinese Journal of Engineering Design  2016, Vol. 23 Issue (5): 497-500,512    DOI: 10.3785/j.issn.1006-754X.2016.05.013
    
Research for high-precision feed system based on 3D printer of FDM
SI Guo-bin, WANG Chun-xia, JIN Xiao-feng
College of Mechanical and Electrical Engineering, Jiaozuo University, Jiaozuo 454003, China
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Abstract  

In order to improve accuracy and quality of print moldings, high-precision feed system based on 3D printer of FDM and the implement method is improved. This system used IRF530N power tube, heating pipe and PWM as a Heating Module; Pt100 platinum thermistor, differential amplifier circuit and PID Algorithm as a Temperature Measuring and Controlling Module. It not only simplified the calculation of scale changes, but also reduced the influence of the measurement of resistance drift. Based on feeding control module of the stepping motor, some measures for reducing the phenomenon of the stepper motor which losed step were given. The realization of constant temperature control of 180-250℃ range, ±1℃ accuracy can guarantee the constant temperature and high precision feeding of 3D printer of FDM. It can also be used to control the humidity, pressure, displacement and angle and other physical quantities.

Key words： 3D printer      PID      PWM      thermostatical control     
Received: 09 March 2016      Published: 28 October 2016
CLC:  TP272  
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SI Guo-bin
WANG Chun-xia
JIN Xiao-feng
Cite this article:

SI Guo-bin, WANG Chun-xia, JIN Xiao-feng. Research for high-precision feed system based on 3D printer of FDM. Chinese Journal of Engineering Design, 2016, 23(5): 497-500,512.

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https://www.zjujournals.com/gcsjxb/10.3785/j.issn.1006-754X.2016.05.013     OR     https://www.zjujournals.com/gcsjxb/Y2016/V23/I5/497


FDM型3D打印机的高精度进料系统研究

为了提高打印成型件的精度和质量，对FDM型3D打印机进料系统及其具体实现方法进行了改进.系统采用功率管IRF530N、加热管和PWM组成加热模块，采用铂热电阻Pt100、差动放大电路和PID算法组成温度测控模块.既简化了标度变化的计算量，又降低了电阻值温漂对测量结果的影响.针对基于步进电机结构的送料控制模块，给出了减少步进电机失步的措施.系统实现了180～250℃，±1℃精度的恒温控制，为FDM型3D打印机系统的恒温和高精度进料提供了保障，并且在简单调整后，还可对湿度、压力、位移和角度等物理量进行控制.


关键词： 3D打印机,  PID,  PWM,  恒温控制 

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