FDM型3D打印机机械结构设计(含CAD零件图装配图)

FDM型3D打印机机械结构设计(含CAD零件图装配图)(论文说明书20000字,外文翻译,CAD图10张)
摘  要
课题以FDM型3D打印机机械结构设计为主要工作。通过对3D打印机机械结构分析及设计，实现3D打印机在工作过程中所需要的机械运动。实现3D打印机的机械运动后，便可满足3D打印机打印功能的基本要求。
在设计中，首先了解3D打印机的功能及工作原理，进而分析3D打印机在工作过程中需要实现怎样的机械运动，从而思考怎样的机械结构能实现所需要的机械运动。列出可以采用的几种方案，论述所列方案的优缺点、机构实现的难易程度及各个方案的机械结构的合理性，在综合考量各个方案后选出相对合理的提案，并进行机械结构的设计。
3D打印机在工作过程中，主要应实现X、Y、Z三个方向的机械运动。因此，所设计的3D打印机的机械结构应达到X、Y、Z三个方向平动的要求。在设计过程中通过对3D打印机的观看，结合其他机床实现机械运动的方法，从而得出自己最终要选择的设计方案。这次设计的3D打印机就要是当前市场比较流行的，对它的工作原理和发展现状，从查找的资料了解，设计3D打印机的构型方案。根据设计方案，对电机、轴承、带轮及其附属机构进行选型计算，并进行应力校核。

关键词: 3D打印机；方案设计；结构设计 

Design of Model 70FDM 3D Printer
Abstract
The topic of my graduated design is FDM 3D printers mechanical design. 3D object is achieved by the work of the analysis and design of the mechanical structure of the printer to achieve 3D printer during operation of the mechanical movement required. when achieved the mechanical movement, you can meet the basic requirements of 3D printer functions.
In the design of the course, I get the meaning of the function and operation principle 3D printer ,3D printer at first .Then analyzed in the work process to achieve what needs to mechanical motion, thus we need to think what mechanical structure about how to achieve the required mechanical movement. Then lists several options can be used and thinking the advantages and disadvantages are listed in the program and the degree of difficulty to achieve advantages and disadvantages of the various agencies and programs implemented in various programs after comprehensive consideration of the proposal to elect a relatively reasonable, and mechanical Design. [资料来源：https://www.doc163.com]
3D printers in the course of their work, mainly to be achieved three directions mechanical movement of X, Y, Z. Thus, the mechanical structure of the printer should be designed to achieve 3D X, Y, Z three movable parallel to the direction required. By watching in the design process a 3D printer, combined with other methods to achieve the mechanical movement of the machine, to get the final design.In this paper, the design content of working principle and development present situation of the research on 3 d printer, according to the survey results, which has been widely applied for the current is analyzed by 3 d printers, characteristic of each structure, design of a 3 d printer configuration scheme.According to the design scheme of bearing, pulley, selection of gear and its affiliates.
Keywords:3D printer；scheme design；structure design
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目  录
摘  要    I
Abstract    II
13D打印机概述    1
1.1什么是3D打印机    1
1.2 3D打印机的工作原理    1
1.3  3D打印机国内外发展状况    2

1.3.1基于FDM技术3D打印机国外发展现状    2
1.3.2  基于FDM技术3D打印机国内发展现状    4
1.4  未来研究的意义    5
2FDM型3D打印机的结构分析    7
2.1 FDM型3D打印机整体结构的方案选择与确定    7
2.2FDM型3D打印机Z轴方向运动结构分析    8
2.3   FDM型3D打印机X轴方向运动结构分析    9
2.4   FDM型3D打印机Y轴方向运动结构分析    9
3零件的选用    10
3.1  丝杠的设计和选择    10
3.2  导柱的设计与选择    11
3.3  同步带轮及同步带的选用    12
3.4带轮及齿带的校核    14
3.5  轴承的选择    15
3.5.1  轴承轴组件的一个重要组成部分    15
3.5.2  轴承特点    15
4  基于FDM技术3D打印机挤出机构和送丝机构设计    17

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4.1  挤出头的选择    17
4.2  送丝机构的选择    17
4.3  温度传感器的选择    18
4.4  基于FDM技术3D打印机加热装置设计    20
4.5  加热元件及其工作原理    21
4.6  电机的选择    21
5  喷头的选用    23
5.1  熔融挤出系统对喷头系统的基本要求    23
5.2  打印速度    24
6  材料的选用    27
6.1材料选用原则    27
6.2材料收缩问题    27
6.3材料断丝、堵塞喷头问题    27
6.4其他问题    28
6.5  后处理    28
6.6  位移传感器    30
7  热床    33
参考文献    34
外文文献    36
中文翻译    44
致　谢    50

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