阐述了铁路现场钢轨打磨现状,针对存在问题设计了多角度机器人钢轨打磨机,组合运用MATLAB编辑算法和仿真软件V-REP以实现可视化仿真,通过现场试验和既有线试验,与人工打磨机对比打磨后的廓形偏差(GQI)和钢轨粗糙度(GRI)等数据,验证了机器人打磨机的性能.

传统点焊钳加压模块多使用气动加压、液动加压和脚踏式加压,存在压力不稳定、噪音大、自动化程度低等缺点.电源模块多使用次级整流电源、三相低频电源和单相工频电源,存在功率因素低、对网路冲击大、模块体积大等缺点.本文设计的伺服点焊钳针对以上问题,采用STM32单片机作为控制核心,加压模块采用伺服电机产生扭矩,电源模块采用三相逆变电源,提高了焊接的质量.此外还设计了友好的人机界面,提高了焊钳的智能化和焊接效率.

介绍了一种X射线管测试台的脉冲参数波形采集系统.FPGA控制高速ADC对测试台高压电源上电瞬间X射线管多项参数进行采集,将采集的数据通过网络端口上传给LabVIEW上位机软件,然后进行数据解析、优化处理,将波形呈现出来,进而获得X射线管的各项出厂指标.实验结果表明,该系统功能完善,性能可靠,具有很好的应用和借鉴意义.

针对2×2对称毛细管节流气浮工作台模型,运用Fluent数值仿真软件分析得到气膜区压力及速度分布、质量流量和承载力等特性,分析毛细管节流器间距、结构参数和供气压力对气浮工作台特性的影响.结果表明:不同节流器间距分布对质量流量影响不大,承载力随节流器间距增大而增大;节流器弯折角度变化对质量流量、承载力和静刚度影响不显著;质量流量和承载力随供气压力的增加而增加.分析结果为设计优化气浮工作台和实际工程需要提供了仿真数据参考.

针对基板检测输送平台的运动控制器昂贵且维护难等问题,提出基于STM32F4微控制器的基板检测输送平台运动控制器设计.该设计采用高性能MCU给控制系统提供强大的运算资源和丰富的通信接口,为电机的精确控制提供保证,同时该微控制器丰富的IO资源充分满足该平台的多开关量检测和控制;采用模块化的设计简化了控制系统的硬件结构,这便于后期的维护和升级.最后提出了一种气缸同步控制的方案并在MATLAB下仿真得到验证.相对于目前市场上的运动控制器,该设计在实现基板检测输送平台精确控制的同时,有效地降低了控制器的成本和控制系统的体积.

大学生创造性思维能力及实践能力培养是当前高等教育面临的重要课题.我们采取将企业技术需求与大学生创新实习活动相结合的思路,实践以企业小课题为导向的大学生创新型生产实习模式.实践表明,这种生产实习模式能有效激发大学生创新热情,并为建立校企联合培养大学生创新实践能力的长效机制奠定基础.

螺钉在日常生活和工业中随处可见,具有操作简易、智能、高效特点的自动锁丝机被广泛使用;新的技术原理不断应用于自动锁丝机中,螺钉送到位与否是影响锁丝成功的一个重要因素.针对气动式螺钉输送提出一种利用压差进行螺钉送到位检测的方法,进行了理论计算分析.结果表明:在其它条件不变情况下,螺钉帽与输送管间隙影响被测量压力的大小,利用压差法进行螺钉到位检测方法是可行的.

With its higher resolution, high frequency ultrasound has been widely applied in the clinical study of Ophthalmology, Dermatology, etc. and the preclinical study of small animals to realize the noninvasive, dynamic and realtime imaging of the living tissue. Array and single element probes are two major kinds of high frequency probes. The highfrequency array probe is complicated in structure, hard in manufacture and expensive in price while the single element probe is comparatively simpler, easier, cheaper, plus better in resolution. This paper presents a new design of a high speed mechanical sector scanning device based on single element high frequency ultrasound, expounding its structure, principle and advantages in detail and forecasting its application prospect.

Water temperature monitoring system is designed for measuring the geotextile horizontal permeability and reducing the measuring error caused by temperature change. By using MCU controlled DS18B20 to collect temperature signals and communicating via a serial port with a PC, this design implements operating functions such as temperature displaying, curve drawing, database managing, temperature alarming, temperature controlling with heating and cooling equipment started by relay ℃switch. The predetermined precision of 0.01 can be achieved through laboratory simulation temperature measurement, and other functions will also be realized such as database connection, query, display, curve drawing, etc. This system will meet the preliminary requirements of a stable, reliable, and precise water temperature control with strong anti-interference ability.

对非晶重力制带机加工热变形现象及热变形对非晶带材加工精度的影响进行分析和讨论.提出了一种制带机嘴辊间隙的新型检测方案,可有效检测出热变形引起的制带机嘴辊间距变化,有重要的理论和实际意义.

The thermal deformation phenomenon of gear hobbing machine tools and the effect of gear machine accuracy caused by thermal deformation are analyzed.A novel thermal deformation error measurement scheme of gear hobbing machine tools is proposed,which can measure the position deviation between hobbing cutter and workpiece entirely and effectively.it is means significant in theory and practice.

Automatic correction system of the laminating machine is main used to output the deviation calculation and deviation data of the X,Y,R direction of the acquired images.Firstly,in the thesis,laminating machine automatic correction system has been designed,and collected images has been preprocessed by the automatic correction system.After that we use the Hough transform to carry out angle detection of the image.Interpolation and image registration algorithm of phase correlation have been used in displacement deviation calculation.Finally is the system calibration.By transmitting the offset data to the control computer,It is easy to achieving precise positioning of the laminated slices.

Currently, LED plug-in machine use bulk material plug-in to reduce costs. The piecemeal led lights before the plug-in carry out ordered arrangement, pin alignment, identify polarity and other processes through the transfer device, then LED be transferred to the robot device to complete plug-in for enabling crawl, and guaranteed rate and success rate of the LED plug-in machine. This text based on the special structure of the diode to design a automatic transmission device of diode. This automatic transmission device achieve diode pin alignment, identify polarity and other functions in the transmission process. The automatic transmission device of diode provide technical support for the LED plug-in machine, achieve the automation of the LED transfer process and has an important role in promoting The development of LED industry.

Taking PVC batching system for example,this paper illustrates the function of Kingview SQL database access,and show the general methods and steps to connect MS access database.Using this function,we can achieve the statistic dosage for each raw material in PVC batching system,and generate report for inquiries.

In automotive industry,the steel ring bead is given the necessary strength and rigidity to the tire fixed firmly on the wheel rim,and its direct impact on the quality of life of the tire and automotive safety.This paper mainly introduces the mechanical construction,the measuring principle and the ECU's hardware and software design of the instrument based on MCU for measuring inner perimeter of the steel wire ring.The accuracy of the apparatus can attain ± 0.1mm,and a stable and reliable.

水射流是一项迅速崛起的新技术,是以射流为核心,集泵、阀、密封、液压、自动化控制为一体的综合学科。本文主要介绍了水射流的起源、发展概况、原理及其应用,同时对其发展趋势进行了展望。

介绍一种加工大直径扇形特殊陶瓷材料的旋转工作台的运动方案和高精度铣削辐射槽的夹具设计,根据真空吸盘的优点来设计,以铣削力的大小来确定夹紧力,以此来设计气动夹具的系统方案。

本文主要介绍了测控系统中通信的几种方式,对各种通信方式的实现原理,适用范围,以及速率和可靠性进行了比较,并提出了如何选择适合自己测控系统的通信方式。并对未来远程测控系统的发展进行了预测。

Enterprise data can be displayed directly in the quality of products,therefore analysis of a large amount of data storage on the quality of products is an important business issue.This paper introduces the vb based on the type of data storage and storage of several commonly used methods,and by way of example illustrates this specific methods and the scope of application of the respective advantages and disadvantages.

It is proposed to use Energy Gradient as evaluation fuction of digital image,which is important to defecting image definition.The mathematical models for evaluation fuction,which characterize the preferable efficiency,have more high signal-to-noise,better reliability,powerful unimodality than other ones.It can be well applied to definition evaluation fuction of image.