新型纸盒包装机主轴装置变形分析和优化设计

发布时间：2018-06-03 19:52

本文选题：纸盒包装机 + 定位精度　；参考：《湖北工业大学》2017年硕士论文

【摘要】：包装行业中,纸盒包装的需求量高涨,加工质量要求越来越高。其中硬纸板纸盒包装作为纸盒包装行业中的新起之秀,占据着3C产品包材的主流市场。在纸盒的生产制作上人工制盒速度“不够”,达不到企业的生产需求、机械方式制盒精度“不足”,达不到市场要求的工艺性效果。因此,研究出快速高精度的纸盒生产设备,对硬纸板纸盒生产具有十分重要的现实意义。本学位论文主要针对新型纸盒包装机主轴装置的定位精度不足问题进行了分析,并提出三个方面的优化设计,完成了一套制盒精度高的主轴装置。1.分析主轴装置支撑主体的结构特征,运用Ansys Workbench软件计算其变形量,找到影响其定位精度不足的原因。基于优化设计理论,Ansys Workbench有限元分析软件的响应曲面优化和拓扑结构优化板块对主轴装置支撑主体进行分析,并提出优化设计方案。2.分析主轴升降装夹部件的结构特征,运用Ansys Workbench软件计算其变形量,找到影响其定位精度不足的根本原因。基于机械设计的刚度提升原理以及材料的特性选择,提出三个可提升其刚度的优化设计点。并对三个设计点的优化结果进行有限元分析,满足设计要求。3.分析主轴装置中的钢球直线导轨副的工作状态,提取了一种受侧向载荷与预紧力的钢球直线导轨副受载模型以及相应的力学模型。理论推导了理论推导模型求解钢球直线导轨副变形的计算和步骤,计算了其变形量。应用Ansys Workbench有限元验证了理论模型求解的准确性,说明此理论模型可以描述钢球直线导轨副的变形状态。4.根据主轴升降装夹部件中夹具的定位特点,分析了受侧向载荷的钢球直线导轨副变形之后导致夹具发生偏摆的机理。通过钢球直线导轨副竖直以及水平方向上的变形求解了夹具的定位精度值及其特点。确定了纸盒短边方向的定位精度不足,且提出优化方案。本文主要在介绍新型纸盒包装机主轴装置的基础上,分别对主轴装置支撑主体、主轴升降装夹部件和钢球直线导轨副进行了力学分析和结构优化,改善了新型纸盒包装机主轴装置的结构,且应用于生产实际取得了很好的效果。
[Abstract]:In the packaging industry, the demand for carton packaging is high, and the quality requirements are becoming higher and higher. Cardboard carton packaging, as a new show in carton packaging industry, occupies the mainstream market of 3C products. In the production of carton, the speed of manual carton making is not enough, the production demand of enterprise is not reached, the precision of mechanical carton making is insufficient, and the technological effect required by market is not reached. Therefore, it is of great practical significance to develop a fast and high precision carton production equipment for paperboard carton production. This thesis mainly analyzes the problem of the insufficient positioning accuracy of the spindle device of the new carton packaging machine, and puts forward the optimization design in three aspects, and completes a set of spindle device with high box making precision. This paper analyzes the structural characteristics of the mainstay of the main shaft device, calculates its deformation by using Ansys Workbench software, and finds out the reasons that affect its positioning accuracy. Based on the theory of optimization design, the response surface optimization and topology optimization of ANSYS Workbench finite element analysis software are used to analyze the main support body of the main shaft device, and the optimal design scheme. 2. This paper analyzes the structural characteristics of the main shaft lifting clamping parts, calculates its deformation by using Ansys Workbench software, and finds out the fundamental reasons that affect the positioning accuracy of the parts. Based on the stiffness lifting principle of mechanical design and the characteristic selection of materials, three optimization design points are proposed to enhance the stiffness of mechanical design. The optimization results of the three design points are analyzed by finite element method to meet the design requirements. 3. 3. Based on the analysis of the working state of the steel ball linear guideway pair in the main shaft device, a load model and the corresponding mechanical model of the steel ball linear guide rail pair subjected to lateral load and pretightening force are extracted. The calculation and procedure of calculating the deformation of the steel ball linear guide rail pair are presented in this paper, and the deformation amount is calculated. The accuracy of the theoretical model is verified by using the Ansys Workbench finite element method, which shows that the theoretical model can describe the deformation state of the steel ball linear guideway pair. According to the positioning characteristics of the fixture in the main shaft lifting clamping parts, the mechanism of the jig deflection caused by the deformation of the steel ball linear guide rail pair under lateral load is analyzed. Through the vertical and horizontal deformation of the steel ball straight-line guide rail, the positioning accuracy and characteristics of the fixture are solved. It is determined that the positioning accuracy of the short edge direction of the carton is insufficient, and the optimization scheme is put forward. Based on the introduction of the main shaft device of the new carton packaging machine, the mechanical analysis and structural optimization of the main body of the main shaft device, the main lifting and clamping parts of the spindle and the steel ball linear guide rail pair are carried out respectively in this paper. The structure of the spindle unit of the new carton packaging machine is improved and the practical application of the new type carton packaging machine has achieved good results.
【学位授予单位】：湖北工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB486

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