半自动精密划片机设计与试验研究

发布时间：2018-11-21 20:17

【摘要】：半自动划片机是一种精密切割设备,主要用于金属及陶瓷片、硅片、玻璃、蓝宝石、锗、砷化镓等材料的划片加工,使加工后的产品品质精良,切边美观光滑。本论文在国内外划片机发展及文献调研基础上结合沈阳和研科技有限公司"半自动精密划片机"项目进行划片机的优化设计及试验研究。论文主要研究内容果如下:(1)论文分析了当前国内外精密划片机的发展现状与趋势,并对主要机械结构的工作原理和影响划片质量的因素进行理论分析,对划片机的刀片、喷水罩结构、水雾和水气密封结构等进行对比分析,确定了划片机结构的总体方案。(2)完成划片机整体结构及关键部件选型设计。进行了划片机刀片的受力分析和选型设计,确定了刀片的材质和组成;通过计算选取了能满足传动要求的滚珠丝杠系统及配套的伺服电机。(3)设计了风琴式防水罩结构。分析了使划片机机芯腐蚀的主要原因,确定了水气、水雾的来源途径,提出了水密封的结构,进而对防水罩结构进行了改进设计,试验结果表明成本低、密封效果好。(4)设计了金属喷水罩结构。通过对划片机现有喷水罩的分析调查,发现了喷水罩存在整体强度不够、尺寸调节不便、互换性不足等问题,通过不同的方案的对比分析确定了使用金属喷水罩结构,并进行了设计计算。(5)进行划片机切削工艺参数的试验研究。首先通过单因素试验确定影响划片机切割品质评价指标即刀口宽度w的三个重要影响因素,即主轴进给速度v(x轴进给速度)、切割水量q、主轴转速n。然后通过三元二次正交回归旋转组合试验确定了最优的划片加工工艺参数。试验结果表明,划片机结构设计合理,满足要求。
[Abstract]:Semi-automatic slicing machine is a precision cutting equipment, mainly used for metal and ceramic, silicon, glass, sapphire, germanium, gallium arsenide and other materials, so that the product quality after processing, beautiful edge smooth. On the basis of domestic and international development of slicing machine and literature investigation, this paper carries on the optimization design and experimental research of the slicing machine combined with Shenyang Heyan Science and Technology Co., Ltd. "Semi-automatic Precision slicing Machine" project. The main contents of this paper are as follows: (1) the paper analyzes the current situation and trend of the precision slicing machine at home and abroad, and analyzes the working principle of the main mechanical structure and the factors affecting the quality of the slicing machine, and makes a theoretical analysis of the blade of the slicing machine. The structure of water spray hood, water mist and water gas seal are compared and analyzed, and the overall scheme of the structure of the slicing machine is determined. (2) the overall structure and the selection design of the key parts of the slicing machine are completed. The force analysis and type selection design of the blade are carried out, the material and composition of the blade are determined, and the ball screw system and the supporting servo motor which can meet the transmission requirements are selected by calculation. (3) the structure of organ waterproof cover is designed. This paper analyzes the main reasons for the corrosion of the machine core of the slicing machine, determines the source way of water vapor and water mist, puts forward the structure of the water seal, and then improves the structure of the waterproof cover. The test results show that the cost is low. The sealing effect is good. (4) the metal sprinkler structure is designed. Through the analysis and investigation of the existing sprinkler cover of the slicing machine, it is found that the whole strength of the sprinkler cover is not enough, the size adjustment is inconvenient, the interchangeability is insufficient, and the structure of the metal water spraying cover is determined by the comparison and analysis of different schemes. The design and calculation are carried out. (5) the experimental study on cutting parameters of the cutting machine is carried out. Firstly, three important factors affecting the cutting quality of the cutting machine, namely, the feed speed of the spindle, the feed speed of the v (x axis, the water quantity of cutting, and the rotational speed of the spindle, are determined by the single factor test, which are the three important factors affecting the cutting quality of the cutting machine, namely, the width of the cutting edge w. Then, the optimal cutting process parameters were determined by the three-dimensional quadratic regression rotation combination test. The test results show that the structure design of the slicing machine is reasonable and meets the requirements.
【学位授予单位】：沈阳农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG48

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