GDX1包装机封签涂胶装置的改进研究

GDX1包装机原有的封签涂胶轮是圆形的,涂胶后形成了两条与封签长度等长的胶线,容易在烟包表面产生胶垢污点.将涂胶轮改成扇形,对封签涂胶装置的其他部件做相应改进,使封签涂胶后两端都留出了约2 mm的无胶液空间,克服了封签两端胶液溢出的现象,使烟包表面胶垢污点的投诉频率从改造前的2～3次/年下降为0次/年.     

烟包封签在线监测与控制实践

GD-x1包装机小盒质量问题中,大部分为封签引起的,表现为封签歪斜、脱落、长短等。在市场退烟统计中,封签缺少占相当比例。封签缺少,在质量缺陷判定中属于A类质量问题,严重影响了产品美誉度和企业形象。通过对设备原理深入分析,创造性提出增加监测点和自动控制缺陷烟包剔出,确保流入下道工序产品质量,有效避免封签丢失缺陷流入成品生产环节。     

YB25卷烟小盒包装机封签输送机构的改进

YB25卷烟小盒包装机封签输送机构的主要工艺目的,是为小盒烟包提供合格的打好白乳胶胶线的封签纸,进而在吸风叉和负压吸风的配合下,将打好白乳胶胶线的封签纸输送到指定工位。为了达到这一工艺目的,封签输送机构需要在相位上同主机传动相互配合,在主机将烟包输送到4轮出口时,及时通过吸风叉将打好白乳胶胶线的封签纸送达工作工位。但是,在设备实际运行中,经常发生封签纸在输送过程中出现堵塞、粘贴歪斜和窜头的故障现象,严重影响设备整体运行效率和产品质量。通过分析研究发,现封签纸输送故障主要是在第一压紧轮支座的导向圆弧面入口处以及封签纸上胶后的第二、第三导纸轮与相应滚轮输送时产生的。为了解决这一问题,决定对第一压紧轮支座的导向圆弧面、第二、第三导纸轮进行改进:首先,将第一压紧轮支座的导向圆弧面从结构上分为导向面与非接触面两个区域,既保留中间部位作为导向面,又将两边进行加工构成两个非接触区域,减少与封签的接触。封签纸在作90度转向输送时,既保证封签顺利交接,又减少两侧封签与导向圆弧面的接触摩擦力;其次,将第二、第三导纸轮由线接触改为面接触,增加输送轮与封签纸的摩擦力,提高传动的平稳性。通过以上两项主要改进来降低封签输送的故障率,进而达到减少维修次数,提高设备有效作业率,提升产品质量的目的。     

无轨胶轮车路试制动安全性能检测分析

为做好无轨胶轮车制动性能检测工作,介绍了无轨胶轮车制动性能主要评价指标,分析了无轨胶轮车制动性能安全检测手段现存的不足,提出了采用高精度智能检测的策略,总结了具体检测要求,建议增加制动效能恒定性与制动方向稳定性评价指标,以期通过建立无轨胶轮车制动性能的常态化检测机制,充分做好无轨胶轮车制动性能的检测工作,进而有效降低无...     

基于UWB的煤矿胶轮车智能运输管理系统的开发实践

主要针对煤矿胶轮车运输效率偏低的问题,提出了利用UWB超宽带技术所具备的封闭空间精准定位能力解决煤矿井下胶轮车的位置精准跟踪、信号精准控制、到站精准提醒、实时速度监测及候车人员监测的需求。经实际应用,验证了该技术的可行性,通过应用该煤矿胶轮车智能运输系统可有效提高煤矿井下行车安全和高效运行的能力,可有效避免煤矿井下交通堵塞及安全事故的发生。     

矿用无轨胶轮车感应防撞装置的设计

为有效防止无轨胶轮车发生撞车事故,设计了一种防止无轨胶轮车突发撞车事故的感应防撞装置。介绍了该装置的结构和具体工作原理,分析了该装置的主要优缺点,并通过实际应用验证了该装置运行的安全性和可靠性,实际应用结果表明,通过应用该装置,无轨胶轮车撞车事故率显著降低,更好地保障了矿井的安全运输。     

煤矿井下无轨胶轮车的应用与效果分析

介绍了目前井下无轨胶轮主要类型,并分析了无轨胶轮车井下应用适应条件。结合实际案例,阐述了井下无轨胶轮车在煤矿企业应用效果。同时介绍了当前井下无轨胶轮车应用的优势与缺点,提出无轨胶轮车的应用前景。     

一种专用平板车的研究与应用

在介绍无轨胶轮车在立井、斜井中的应用的基础上,着重介绍了一种专门运输轻型胶轮车的专用平板车,这种专门运输轻型胶轮车是韩家洼煤业研发的,在研发的过程中,避开了扩刷巷道、改变了斜井坡度的传统思维方式,平板车借鉴了立井改造载具(罐笼)的思路,巧妙地实现了有轨与无轨辅助运输的快速转换,有效提高了矿井的辅助运输效率,具有借鉴意义。     

煤矿无轨胶轮车智能检测系统浅析

煤矿井下辅助运输系统是保证矿井产能和安全生产、提高生产效率的重要一环,现针对煤矿无轨胶轮车运输系统,介绍了无轨胶轮车的特点,分析了无轨胶轮车的主要安全隐患及典型事故,研究了无轨胶轮车智能检测系统的组成、设备功能,制订了无轨胶轮车智能检测流程。     

提升矿井无轨胶轮车爬坡能力探析

从当前无轨胶轮车在煤矿的运输状况来看,爬坡能力是制约无轨胶轮车运输质效的关键.从煤矿井下无轨胶轮车运输动力性分析入手,重点研究了提高无轨胶轮车爬坡能力的相关举措,并针对性提出了增强无轨胶轮车在井下运输整体质效的措施.     

Design principles of reconfigurable machines

Reconfigurable machines form a new class of machines that are designed around a specific part family of products and allow rapid change in their structure. They are designed to allow changes in machine configuration according to changes in production requirements. The reconfiguration may be related to changes in machine functionality or its scalability, i.e., the change in production volumes or speed of operation. Reconfigurable machines represent a new class of machines that bridges the gap between the high flexibility and high cost of totally flexible machines and the low flexibility and low cost of fully dedicated machines. The design principles of reconfigurable machines follow a similar philosophy, which was derived for reconfigurable manufacturing systems, and present an approach for the design of machines to be used mainly in high-volume production lines. This paper introduces design principles for reconfigurable machines, which may be applied in different fields of manufacturing. Based on these design principles, three types of reconfigurable machines were designed for various types of production operations such as: machining, inspection and assembly. This paper shows how the suggested design principles were utilized in the design of several full-scale machine prototypes and tested experimentally.     

KUM-750型并联结构测量机的运动性能分析

对KUM-750型六坐标并联测量机的运动性能进行了分析,通过实测获得其主运动机构的结构参数并建立了机构的运动学模型。分析了测量机的工作空间、精度特性及测量头轴线的姿态能力并给出它们的几何描述,相关结果有助于较全面地了解测量机的运动性能。     

可变机器约束的模糊作业车间调度问题研究

在车间实际加工中,工件的加工时间和交货期是一个模糊数,而且工件的某道工序有多台机器可供选择。针对这类作业的车间调度,提出了以极大化最小客户满意度为指标的可变机器约束的模糊作业车间调度模型,并给出了算法设计。应用遗传算法在适应度函数处理中引入模糊数处理方法,解决作业车间模糊调度问题,实现调度优化。仿真实验结果表明了该调度方法的有效性,为可变机器约束的模糊作业车间调度提供了一种实现途径。     

盾构机推进液压系统比例压力流量复合控制仿真

本文以盾构挖掘机为背景,对其推进负载进行简化,建立盾构推进系统的模型,并进行仿真分析.提出比例压力流量复合控制方案,并应用AMEsim对其进行仿真.仿真证明比例压力流量复合控制方式可以减小控制压力引起的流量波动,提高了系统的控制性能,对盾构的自动控制有重要意义.     

圆柱分度凸轮的曲线设计与数控加工解析

空间分度凸轮机构主要应用于冲压机械、包装机械、制药机械及需要固定转位的自动化机械中.本文主要介绍圆柱分度凸轮机构的曲线设计及数控加工注意事项.     

合理利用不同检测技术,提高设备工况监测水平

设备的长久安全、可靠行动是十分重要的，但由于摩擦、磨损等的存在，设备的失效是不可避免的。文章就设备的工况监测中常用的几种技术做了介绍，这些技术的合理利用可以有效地发挥设备的性能，提高使用效益。     

A method of the balancing of spatial mechanisms

Spatial mechanisms can constitute units of different types of machines and these mechanisms interact with rotating units. Such machines include, for example, woven fabric sewing machines, knitted fabric overlock sewing machines, industrial robot manipulators and some farm machines. The present paper contains an example of the balancing of a spatial mechanism of the needle arm drive on an overlock sewing machine at a stage of design.     

Mobile and remote operation for M2M application in upcoming u-manufacturing

This study tried to control and monitor computerized numerical controller (CNC) machines anywhere and anytime for machine (mobile) to machine (M2M) application in wired and wireless environment of upcoming ubiquitous manufacturing systems (u-Manufacturing). With a personal digital assistant (PDA) phone, the machine status and machining data of CNC machines can be monitored in wired and wireless environments, including the environments of IMT2000 and Wireless LAN. Moreover, CNC machines can be controlled anywhere and anytime. The concept of the anywhere-anytime controlling and monitoring of a manufacturing system was implemented for u-Manufacturing in this study. In this concept, the communication between the CNC controller and the PDA phone was successfully performed anywhere and anytime for the real-time monitoring and control of CNC machines. In addition, the interface between the CNC controller and the developed application module was implemented by object linking and embedding for process control (OPC) and shared CNC memory. For communication, the design of a server content module within the target CNC was based on a TCP/IP. Furthermore, the client content module within the PDA phone was designed with the aid of embedded c++ programming for mobile communication. For the interface, the monitoring data, such as the machine status, the machine running state, the name of the numerical control (NC) program, the alarm and the position of the stage axes, were acquired in real time from real machines with the aid of the OPC method and by sharing the CNC memory. The control data, such as the start, hold, emergency stop, reserved start and reserved stop, were also applied to the CNC domain of the real machine. CNC machines can therefore be controlled and monitored in real time, anywhere and anytime. Moreover, prompt notification from CNC machines to mobile phones, including cellular phones and PDA phones, can be automatically realized in emergencies.     

横梁蠕变松弛对龙门镗铣床运动精度可靠性的影响建模

针对横梁蠕变变形对龙门镗铣床精度保持性的影响问题,建立了一种龙门镗铣床运动可靠性评估模型。采用有限元软件对横梁残余应力进行多工序连续建模仿真,并通过盲孔法测试验证了有限元模拟的有效性;根据横梁导轨与滑枕座间几何误差的表征关系构建了龙门镗铣床的几何精度退化模型,利用蠕变模拟数据确定y向几何误差退化轨迹;结合机床空间位置误差模型和误差退化轨迹建立了机床运动可靠性评估模型,进而实现对服役期的龙门镗铣床运动可靠性的预测,以及对不同横梁应力状态下运动可靠性的比较评估。结果表明,横梁蠕变变形导致机床运动精度可靠性呈幂律函数形式衰退,且在时效前较大应力下机床运动可靠性降低更明显。     

Ubiquitous-based mobile control and monitoring of CNC machines for development of u-machine

This study was an attempt to control and monitor Computerized Numerical Controller (CNC) machines anywhere and anytime for the development of a ubiquitous machine (u-machine). With a Personal Digital Assistant (PDA) phone, the machine status and machining data of CNC machines can be monitored in wired and wireless environments, including the environments of IMT2000 and Wireless LAN. Moreover, CNC machines can be controlled anywhere and anytime. The concept of the anywhere-anytime controlling and monitoring of a manufacturing system was implemented in this study for the purpose of u-manufacturing and u-machines. In this concept, the communication between the CNC controller and the PDA phone was successfully performed anywhere and anytime for the real-time monitoring and control of CNC machines. In addition, the interface between the CNC controller and the developed application module was implemented by Object linking and embedding for Process Control (OPC) and shared CNC memory. For communication, the design of a server contents module within the target CNC was based on a TCP/IP. Furthermore, the client contents module within the PDA phone was designed with the aid of embedded c++ programming for mobile communication. For the interface, the monitoring data, such as the machine status, the machine running state, the name of the Numerical Control (NC) program, the alarm and the position of the stage axes, were acquired in real time from real machines with the aid of the OPC method and by sharing the CNC memory. The control data, such as the start, hold, emergency stop, reserved start and reserved stop, were also applied to the CNC domain of the real machine. CNC machines can therefore be controlled and monitored in real time, anywhere and anytime. Moreover, prompt notification from CNC machines to mobile phones, including cellular phones and PDA phones, can be automatically realized in emergencies.