基于Java的窗体程序设计概述

Java是一门使用非常广泛的语言,具有功能强大、使用简单灵活的特点,除了在Web及Android领域的优异表现外,它在窗体程序设计方面的表现同样突出。本文对Java窗体程序设计中涉及的窗体元素、布局管理器及事件处理进行了介绍。     

固定辙叉区轮轨静态接触几何关系计算

针对固定辙叉特殊的轨线布置及复杂的轮轨接触关系,建立固定辙叉区轮轨接触几何关系算法,分析固定辙叉区沿辙叉走行方向主要接触参数的变化规律以及各关键断面轮轨接触点变化情况。结果表明:在辙叉轮载过渡段轮轨接触参数变化规律复杂,结构不平顺变化幅值最大且波长较短;轮对横移量增加,轮轨接触几何参数增大,轮轨动力作用增强;辙叉咽喉区和轮载过渡段辙叉侧轮轨接触点变化存在突变。提出应合理设计辙叉区轮载过渡段结构参数,优化轮轨接触几何关系,进而改善列车通过时辙叉的受力性能。     

浅析武术中的直摆性击响腿法

文章通过对“武术中直摆性击响腿法”的教法提示、易犯错误及纠正方法的叙述,让练习者更容易掌握动作要领、明确动作疑难点,不断地提高和完善动作技术水平,轻松自如、合理地运用到实际中去。     

Electro-Discharge Fine Truing of Metal-Bonded Fine-Grain Diamond Wheel Based on Real-Time Monitoring

A data acquisition system based on LabVlEW is designed and implemented, and electrodischarge(ED) fine truing of metal-bonded fine-grain diamond wheel based on real-time monitoring is researched. Real-time monitoring not only makes efficient impulse specification of ED truing easily obtained, but also is good for timely identifying no-load, avoiding short circuit and arc discharge phenomena and then for obtaining normal machining state. ED fine truing of the fine-grain wheel includes two steps: rough truing for high efficiency and fine truing for high precision. Final ED truing precision and efficiency not only depend on electric process specification, but also is concerned with electrode shape, insulated performance of operating fluid and vertical feed quantity value and frequency. Experiments indicate that ED fine truing based on real-time monitoring can improve the truing precision and efficiency. Average machining efficiency of W10 wheel is about 0.95μm/min； the final run-out by ED truing is less than 2μm.     

数字图像处理技术在铝轮毂PCD值检测中的应用

汽车轮毂PCD(pitch circle diameter)值是指螺栓安装孔的中心连接而成的截面圆的直径。常见的螺栓孔有四孔、五孔、六孔等分布模式,孔数与PCD值的乘积是轮毂的一项重要参数,本文旨在讨论用数字图像技术精确检测这些螺栓孔分布的几何数据,如孔心坐标x0,y0,节圆直径PCD,孔与孔之间的夹角θ,轮轴中心的坐标,以及各孔到轮轴中心的半径等等。     

圆弧金刚石砂轮精密在位检测系统设计

针对圆弧金刚石砂轮磨损检测及砂轮修形的实际需要,通过研究圆弧金刚石砂轮的在位测量原理,设计相应的软硬件控制方案.利用KEYENCE公司LK-G1O高精度激光位移传感器,设计圆弧金刚石砂轮的精密在位检测系统,实现圆弧金刚石砂轮表面轮廓的精密检测.实验结果表明：该检测系统适用于圆弧金刚石砂轮精密测量和评价,为光学非球面磨削加工提供参数依据.