螺纹测量装置机械及驱动系统

发布时间：2018-06-21 15:34

本文选题：螺纹多参数检测 + 误差分配　；参考：《上海工程技术大学》2016年硕士论文

【摘要】：螺纹零件是机械行业中应用最广泛的机械零件。螺纹零件的种类繁多、几何参数复杂、互换性要求高,对其检测技术的要求较高。随着新技术的广泛应用,计量仪器的持续升级,计量检测方法也得到很快的发展,这些都对螺纹多参数检测提供了有利保障。本文在详细分析国内外螺纹测量装置的基础上,研发一种高精度大行程接触式扫描测量螺纹的螺纹测量装置。螺纹测量装置利用测针扫描被测螺纹零件的表面轮廓,采用高精度光栅分别记录被测螺纹零件轴向截面轴向和径向的位置信息,由计算机将数据进行分析合成,生成被测螺纹轴向截面的二维轮廓图形,实现对螺纹大径、中径、小径、螺距和牙型半角等参数的检测。主要研究工作如下:首先分析比较螺纹测量的常用方法、测量原理;了解国内外螺纹测量装置的研究现状;确定螺纹测量装置的测量原理及设计任务;确定螺纹测量装置的整体结构及各部分结构的要实现的功能;进行螺纹测量装置的误差分配。其次进行螺纹测量装置机械系统的设计。分析设计螺纹测量装置的X方向运动部件、Y方向运动部件、Z方向运动部件、V型夹具部件和顶尖夹具部件的机械结构;对立柱、底座、X工作台和Y工作台进行有限元分析;对丝杆、轴承、导轨和步进电机进行选型、设计、校核;对光栅尺进行选型;对夹具部件的关键零件进行有限元分析及优化改进。再次进行螺纹测量装置驱动系统的设计。进行主控MCU、驱动器、电源和串口电平转换模块等硬件的选型;确定上下位机的通信协议;完成驱动系统上下位机的程序设计;进行步进电机的转动实验。最后总结了本课题的研究内容与不足之处,为下一步研究工作提供方向。
[Abstract]:Threaded parts are the most widely used mechanical parts in mechanical industry. There are many kinds of threaded parts, complicated geometric parameters and high interchangeability. With the wide application of new technology, the continuous upgrading of measuring instruments and the rapid development of measuring and testing methods, all these provide a favorable guarantee for thread multi-parameter detection. Based on the detailed analysis of domestic and foreign thread measuring devices, this paper develops a kind of thread measuring device with high precision and large stroke contact scanning measurement. The thread measuring device uses needle to scan the surface profile of the tested thread parts, and uses high precision grating to record the axial and radial position information of the measured thread parts respectively. The data are analyzed and synthesized by computer. The 2-D profile of the axial section of the measured thread is generated to detect the parameters of the thread, such as large diameter, middle diameter, small diameter, pitch and half angle of tooth shape, etc. The main research work is as follows: firstly, the common methods and principles of thread measurement are analyzed and compared; the research status of thread measuring device at home and abroad is understood; the measuring principle and design task of thread measuring device are determined. The whole structure of the thread measuring device and the functions to be realized in each part are determined, and the error distribution of the thread measuring device is carried out. Secondly, the mechanical system of thread measuring device is designed. This paper analyzes the mechanical structure of the X direction moving parts and Y direction moving parts of the thread measuring device, the V type fixture parts and the center fixture parts, and carries on the finite element analysis to the column, the base X table and the Y table. The wire rod, bearing, guide rail and stepping motor are selected, designed and checked; the grating ruler is selected; the key parts of fixture are analyzed and optimized by finite element method. The drive system of thread measuring device is designed again. The main control of MCU, driver, power supply and serial port level conversion module and other hardware selection; determine the communication protocol of the upper and lower computer; complete the drive system up and down machine program design; step motor rotation experiment. Finally, this paper summarizes the research content and deficiencies, and provides the direction for the next research work.
【学位授予单位】：上海工程技术大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TG85

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