介绍了FDM工艺3 D打印的工作原理.双喷头是FDM工艺3 D打印装备核心的部件,提出了双喷头的设计准则,在设计准则的指导下,设计了无需借助任何外力的单电机送丝机构、利用丝料推力的内嵌式切换机构和半循环风冷系统,整个双喷头仅用一个驱动电机即可完成两个喷头交替送丝、切换等功能,实现两个打印头之间的自动切换打印,并且结构简单紧凑、动作精准.在实际生产中的应用证明了双喷头设计准则和设计方案是可行的,为FDM工艺的双喷头设计提供了依据,具有较高的工程价值.

分析研究了决定FDM工艺3D打印机打印模型精度和成型稳定性的关键问题:成型空间加热保温系统.提出了相应的解决方案:给出了成型空间热风双循环加热保温系统的设计方案,并创新设计了"六边形"风琴防护罩,为大尺寸成型空间的均匀加热保温提供新的设计思路.给出了成型空间保温防护系统关键元件的选型计算方法,为加热器的选型提供科学依据.经过实际生产中的应用和测试,证明了研究方案是可行的,具有实际应用价值,为后续的大尺寸工业级3D打印的工艺研究提供实现基础.

介绍了FDM工艺的3D打印双喷头工作原理.双喷头是FDM工艺的工业级3D打印装备的核心部件,重点分析了现有双喷头的关键部件存在的主要问题:送丝机构和切换机构.在此基础上,首次提出了螺纹式送丝机构,螺纹和丝料接触均匀,不会损伤丝料,降低了对驱动电机的要求,以较小驱动力实现丝料稳定挤出;同时创新性的设计了纯机械式、免驱动的高精度切换机构方案,减少了双喷头的重量和体积.在实际的生产应用中取得了较好的效果,证明了创新设计方案是可行的,为FDM工艺的双喷头设计提供了参考,具有较高的工程应用价值.

在我国工业现代化的逐步发展下,出现了各种各样的电气自动化设备,为提高工作效率发挥了重要作用.但仍然需要注重加强对电气自动化设备的稳定性控制,才能使得电气自动化设备实现长久、安全运行.在这一背景下,本文将从说明电气设备自动化系统基本构成入手,针对电气自动化设备的稳定性控制进行简要分析研究,并尝试提出几点有效的控制策略以供参考.

介绍分析了工业级激光固化成型(SLA)设备的两种打印平台.根据现有的打印平台装置存在打印平台调平复杂、安装及拆卸繁琐等不足,提出了一种机械结构简单、新颖的打印平台装置.通过导向组件、拉紧弹簧和调节螺钉的巧妙组合,即可简单、准确地实现打印平台水平调节,同时拆卸方便(即插式装配),可稳定应用于工业级SLA打印平台的拆装、调平等操作,为SLA打印平台的设计提供了参考.实际生产证明此装置可达到较好的效果,具有较高的工程价值.

本文以传感器技术为研究对象,对其在电气自动化中的应用内容进行分析.在分析传感器技术原理内容的基础上,从机电加工、工业生产、环境检测、人工智能这四个方面详细地论述了机电自动化中的传感器技术应用内容,为相关研究与实践内容提供了参考材料.

为了在研发工作中取得好的效果,开始时正确选择工艺是至关重要的.通过对比分析各种陶瓷3D打印工艺以及结合自身的情况选择适当的工艺来开发,目前取得了好的结果.因此认为知己知彼、扬长避短在工艺选择中是重要的原则.

The SiC particle preform was prepared by 3D printing,and the SiC reinforced A356 matrix composites(SiCp/A356 composites) were prepared by pressure infiltration technology.The microstructure and phase of SiCp/A356 composites were analyzed by optical microscope (OM),scanning electron microscope (SEM),energy dispersive spectroscope (EDS),X-ray diffraction(X-ray) and other modern analysis methods.The results reveal that the microstructure of SiCp/A356 composites fabricated by above-mentioned methods exhibits compact with uniformly distributed SiC particles in the A356 matrix and the desirable interface bonding.Moreover,the interfacial reaction is well controlled.As a result,some harmful phases such as Al4C3 brittle phase are absent from interfacial reaction products.Elements Si in the A356 alloy can prevents the formation of Al4C3 brittle phase,and the existence of Mg in the A356 alloy can improve significantly the wettability of SiC with A356.

This paper briefly explains technique of the rapid prototyping,the two main kinds of heater of resin are discussed and analyzed secondly.A design of hot air heater is proposed finally,and acquires remarkable practical achievement.It is suitable for engineering application.

A technology to change the figure of light spot in dot matrix hologram is introduced in this paper. According to the imaging theory, it can be come true to change the figure of light spot by imaging the arbitrary shape what is on the translucent masking on photoresist. It is indicated from the experiment result that the figure changed dot matrix hologram is more bright than common dot matrix hologram, and the figure can be encrypted on the hologram as designed.

Automatic sorting with large quantities of mixed and used semiconductor components plays a significant role in follow-up environmental regeneration dispose,mainly through manual visual inspection at present,less precision and low efficiency.We designed a automatic sorting system which is based on machine vision OCR Image processing technology,the whole process of feeding image capture identification and classification is computerized According to the test,the technical specifications of system is: sorted rate is 1～2 per second,recognition rate is more than 70%,misclassification rate is less than 2%.

This paper introduces the design method of achieving dispencer control with PCI-8164,and emphatically introduces the structure of dispensing head,motion control and software design.Using PCI-8164 can rapidly complete the whole machine design and effectively shorten research and development time.

The fabric of digital micromirror device(DMD) and its operation are presented.Based on the modulating and multi spectrum imaging properties of the DMD spatial light modulator,a compact 4f Fourier transfer system is designed and assembled for multi spectrum coherent image read-out.The experimental results show that the brightness of the image is not enough if only the(0,0) order spectrum is utilized.The mutil order spectrum imaging it greatly enhances the image brightness and contrast and also effectively inhibits the background noise of the image comparing only using the(0,0) spectrum of DMD.As a practical use,an experimental setup for holographic stereogram is established with multi spectrum imaging of DMD spatial modulator.The created stereograms have high contrast and low noise.

A making system of the synthetic 3D-sensorimotor hologram is designed by computer control.The making process is completely auto-controlled by single chip microcomputer.It resolves the problems with hand operation to make Synthetic 3D-sensorimotor hologram.We successes to make the synthetic 3D-sensorimotor hologram using this system.It's significant to merchandise the synthetic 3D-sensorimotor hologram.