【作者】 张哲；

【导师】 朱先勇； 林英；

【作者基本信息】 吉林大学 ， 工程硕士（专业学位）， 2020， 硕士

【摘要】 本文的主要内容是电动泵护盖安装及气动打标一体化设备的设计与研究,解决当前企业电动泵质量追溯困难以及电动泵护盖安装过程中自动化程度低、人工成本高等问题。本文根据企业的技术要求进行设备的研制。首先根据设备要实现的功能确定设备的总体工作流程,根据设备的工作流程将整个设备划分成主体框架、电动泵上料机构、护盖安装机构、气动打标机构、自动下料机构等八个模块,完成各子模块的结构设计,着重对设备的两个关键模块—护盖安装机构、气动打标机构进行结构设计,再对护盖安装机构、气动打标机构的工作原理进行阐述并进行关键零部件的选型。最后将各个模块合理地布局整合到设备主体框架上,完成设备的总体结构设计。使用ABAQUS软件对设备的主要受力机构进行静力学分析,确保所设计的机械结构满足强度、刚度和安全性要求。同时使用该软件对设备工作台面进行模态分析,确定所设计的工作台面不会出现共振现象,所设计机构满足设计要求。通过对设备进行静力学分析和模态分析,进一步验证了结构设计的可靠性及合理性。根据企业现场生产条件以及设备具体控制要求对设备的控制系统进行设计。控制系统分为气动控制系统和电控系统两部分,首先完成气动控制系统的设计,依据气压传动原理及各气动元器件的动作要求设计出气动控制系统原理图并进行关键元器件的选型。电控系统采用HMI给PLC发出控制指令,PLC根据HMI发出的指令做出响应的方式实现对设备的控制。依据电控系统设计方案设计出电控系统示意图及电控系统自动控制流程图,通过完成电控系统硬件设计,电控系统电路设计,PLC程序编写及触摸屏界面设计完成设备电控系统的设计。最后通过气动打标机构的电路设计和软件设计两方面完成气动打标机构控制系统的设计,以实现设备智能化的生产要求。完成设备的装配调试并通过生产效率、气动打标效果、产品合格率三个性能评定指标完成对整体设备的性能评定。选取金属试片作为试验材料,设计气动打标试验,通过打标宽度平均值和打标宽度标准差两个试验评估指标来确定合适的打标工艺参数。最后通过光学显微镜观测打标试样并分析试验结果可知,在气动打标机构正常工作的情况下,打标压力选择0.5MPa或0.6MPa为宜;打标头移动速度选择40mm/s或50mm/s为宜;打标材质选择45号钢或304钢为宜。更多还原

【Abstract】 The main content of this paper is the design and research of integrated equipment for electric pump cover installation and pneumatic marking,which solves the problems of quality tracing difficulties of electric pumps,low automation and high labor costs during the installation of electric pump covers in current enterprises.This paper develops equipment according to the technical requirements of the enterprise.First,determine the overall work flow of the equipment according to the functions to be implemented by the equipment.According to the work flow of this equipment,the entire equipment is divided into eight modules including the main frame,the electric pump feeding mechanism,the cover installation mechanism,the pneumatic marking mechanism and the automatic feeding mechanism.Complete the structural design of each sub-module,focusing on the structural design of the two key modules of the equipment-cover installation mechanism and pneumatic marking mechanism,then the working principle of the cover installation mechanism,pneumatic marking mechanism is expounded and the key components are selected.Finally,the various modules are reasonably laid out and integrated on the equipment main frame to complete the overall structural design of the equipment.Use ABAQUS software to perform static analysis on the main force mechanism of the equipment to ensure that the designed mechanical structure meets the requirements of strength,stiffness and safety.At the same time,the software is used to perform a modal analysis on the work surface of the equipment,and it is determined that the designed work surface will not appear resonance phenomenon,and the designed mechanism meets the design requirements.The static analysis and modal analysis of the equipment further verified the reliability and rationality of the structural design.Design the equipment control system according to the on-site production conditions of the enterprise and the specific control requirements of the equipment.The control system is divided into two parts: a pneumatic control system and an electronic control system.First,complete the design of the pneumatic control system.Based on the principle of pneumatic transmission and the action requirements of each pneumatic component,the schematic diagram of the pneumatic control system is designed and the key components are selected.The electronic control system uses HMI to issue control instructions to PLC,and PLC responds to the instructions issued by HMI to control the equipment.According to the electronic control system design plan,an electronic control system schematic diagram and an electronic control system automatic control flowchart are designed.By completing the hardware design of the electronic control system,the circuit design of the electronic control system,the writing of the PLC program and the design of the touch screen interface,the design of the electronic control system of the equipment is completed.Finally,the design of the pneumatic marking mechanism control system is completed through the circuit design and software design of the pneumatic marking mechanism to achieve the intelligent production requirements of the equipment.Complete the equipment assembly and debugging,and complete the performance evaluation of the whole equipment by three performance evaluation indicators of production efficiency,pneumatic marking effect,and product qualification rate.Select the metal test piece as the test material and design the pneumatic marking test.Determine the appropriate marking process parameters by two evaluation indexes of the average marking width and the standard deviation of the marking width.Finally,by observing the marking sample under an optical microscope and analyzing the test results,it can be known that when the pneumatic marking mechanism is working normally,it is appropriate to choose 0.5 MPa or 0.6 MPa for the marking pressure;the moving speed of the marking head should be 40 mm/s or 50 mm/s;marking material should be No.45 steel or 304 steel.更多还原