成功的机器人去毛刺飞边系统的几项关键因素

分析机器人去毛刺飞边系统中去毛刺工具的选择、工件定位、视觉系统应用、机器人编程这几项关键因素。投产情况表明,该分析准确合理,可为以后相关设计提供参考。     

齿套无飞边模锻

不久前,我们接受了锻造如图1所示的齿套零件的任务。由于批量小,我厂又缺乏扩孔机、压力机和摩擦压力机等设备,不可能采用闭式模锻。只好在自由锻锤上锻造,考虑到采用合模锻造或开式模锻,都需要增加去飞边工序,同时也浪费材料,为此,我们设计了无飞边镶块锻     

以下为外商求售的项目

『、飞3飞3,斌狱,召沐飞示飞3飞犷召粼飞3飞夭飞污‘已污代召未飞示飞示、。364巴基斯坦—自动平面矫正器。0365哥伦比亚—工业用真空泵,有两种 型号,由铸铁、铸铜或不锈钢制成。0366巴西—烧结机械配件。可用于制造 制动箱,制动器,防盗制动系统,发动 机,拖拉机,汽车,农用机械,边固定 机,自动抛光装置,柴油注入泵等。。367匈牙利—测试设备、测试台和汽车 制造业的专用机械,开发柴油发动机 夕只03680369037003710372037303740375037603770378037903800381和道路车辆的耐力试验。美国—整套翻新冷冻设备,可用于冷冻食品和饮料,也可用于化学工…     

新型去飞边装置的设计与研究

针对航空零件的去飞边环节,设计了新型去飞边装置。介绍了该装置的基本结构和工作方法,并进行了三维建模及制作。该装置结构简单,操作方便,提高了工作效率,对同类产品的研发和改进具有较高的参考价值。     

楔块冷冲模间隙的计算

摩擦金属支架楔块在去飞边冷冲剪过程中,长期存在着啃工件,飞边毛刺大,必须手工修磨毛刺的问题,且影响模具寿命,工时浪费大,成本高。经详细调查分析、研究后解决了该问题。     

OMRON CQM1 PLC在高压水射流去溢料机中的应用

介绍了OMRON CS1G系列PLC在高压水射流去溢料机中的应用,阐述了高压水射流去溢料机控制系统的组成和工作原理,叙述了OMRON CS1G系列PLC与触摸屏结合的控制方式,结合高压水射流去溢料机自动控制系统的特点,给出了系统的软硬件结构设计.该控制系统的控制精度和可靠运行等性能达到满意的效果.实际运行情况表明,系统运行稳定,能够满足生产的工艺要求.     

多工位精密铸件自动打磨系统的研究

多工位精密铸件自动打磨系统采用台达EH3系列PLC控制伺服电机运行,从而精确控制铣刀运行轨迹完成精密铸件轮廓的铣削,去除精密铸件的浇口和飞边。详细介绍了一种通过工位转换并准确定位实现多工位铸件打磨的系统。系统通过在触屏上选择不同的产品型号,完成不同型号产品的铣削打磨,自动化程度高,应用范围广。     

激光在机测量系统的实现

为了能在加工航空发动机关键零部件(如叶片)等复杂曲面零件的过程中实现快速在机测量,研制了非接触式激光在机测量系统。分别介绍了测量系统的工作原理,机械结构和电控系统。该系统主要由激光测头、无线传输电路、可充电锂电池、转接基座、刀柄和外壳等部分组成。为了实现机床的加工模式与测量模式之间的快速切换,其采用刀柄式的安装方式,从加工叶片切换到在机测量时,机床只要运行换刀程序,即可实现叶片加工到叶片测量的转换。此外文中还针对在机测量系统的电控部分研制了通过无线传输的数据采集系统。为了验证所研制的在机测量系统的实用性和有效性,在五轴叶片加工中心上进行了叶片截面测量实验,结果显示其测量精度为20μm,测量时间为10min。验证结果表明所研制的激光在机测量系统能够高效精确地完成叶片型面的测量任务。     

OMRON CQM1 PLC在高压水射流去溢料机中的应用

介绍了OMRON CS1G系列PLC在高压水射流去溢料机中的应用，阐述了高压水射流去溢料机控制系统的组成和工作原理，叙述了OMRON CS1G系列PLC与触摸屏结合的控制方式，结合高压水射流去溢料机自动控制系统的特点，给出了系统的软硬件结构设计。该控制系统的控制精度和可靠运行等性能达到满意的效果。实际运行情况表明，系统运行稳定，能够满足生产的工艺要求。     

基于几何重构的辐条式轮毂飞边去除技术研究

为了去除摩托车辐条式轮毂在铸造过程中产生的飞边,首先采用Marposs在线测量系统在每个轮毂的窗口选择8个位置对其坐标进行测量,然后将测量所得数据与理论轮廓数据进行比较,再将比较所得偏差映射到根据理论轮廓数据确定的加工路径中去,采用样条曲线将各偏差数据点连接起来;从样条曲线上获取每个加工点的偏差值;最后将偏差值补偿到对应的加工路径点中对飞边进行去除。     

Minimal Realization of Linear Graph Models for Multi-physics Systems

An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...     

Quantum Cooperative Robotics and Autonomy

The intersection of Quantum Technologies and Robotics Autonomy is explored in the present paper.The two areas are brought together in establishing an interdisci...     

考虑进油孔有限长滑动轴承油膜力的近似解析解

针对具有进油孔的有限长滑动轴承油膜力求解问题,采用变分原理和分离变量法,求得了有限长滑动轴承油膜压力分布的近似解析表达式。将油膜压力分布的近似解析表达式在油膜存在区域上进行积分,即得到了油膜力。将提出的计算有限长滑动轴承油膜力方法与无限长轴承模型、有限元方法的计算结果进行了比较,发现了提出的方法与有限元方法的计算结果很接近。最后,研究了进油孔位置和进油压力对油膜存在区域、油膜力等的影响,研究结果表明进油孔位置和进油压力对油膜存在区域和油膜力有较大的影响。     

三绕组变压器的双绕组等效建模及在Matpower中的应用

针对实际电网存在着大量的三绕组变压器,但国际上一些著名商业软件,如BPA仿真软件、Matpower这一权威潮流计算开源软件,均只提供双绕组变压器模型,限制了其在具有三绕组变压器的电力系统中的应用的问题,潮流计算是自主开发的电力系统各种应用软件的核心模块,因此依托国际权威开源程序进行二次开发,是一种较好的选择。对Matpower要求的数据格式进行了归纳,对变压器的一般的等值电路及带理想变压器的等值电路和带标幺值的等值电路进行了分析研究,提出了三绕组变压器转换为双绕组等效模型的建模方法,使得原先只适应双绕组变压器的潮流计算软件可以适用于三绕组变压器电网的潮流计算;最后以Matpower软件为例进行了案例计算,并用PSASP仿真软件进行对比验证。研究结果证明,所提出的建模方法是有效的。     

On the Relation of Load to Average Gap in the Contact Between Surfaces with Longitudinal Roughness

A computer simulation model for the contact between longitudinally-oriented rough surfaces has been formulated. This model closely duplicates the actual surf ace contact deformation behavior by taking into account the elastic interactions between the asperities. There were no assumptions made about the shapes, or any deformation behavior of the asperities, except for their obeying the laws of elasticity. The plastic deformations on the high asperity peaks were taken into account by setting a ceiling on their contact pressures at the material hardness value. The simulations used real surface profiles which were digitized from unworn circumferentially ground steel surfaces. Each pair of these profiles was mathematically combined to form an equivalent rough profile pressing against an infinitely rigid flat and having the appropriately adjusted elastic modulus. A total of 28 different pairs of profiles were used in the simulations. Each contacting pair was subjected to 30 different load levels and the local contact pressures and deformations were calculated. The contact simulations yielded some important mathematical relationships between parameters, such as the real area of contact, average gap, and average asperity load through statistical curve fitting. Two analytical functions were generated to relate the average load to average gap and the real area of contact to load.     

Fifth International Summer School on Screw-Theory Based Methods in Robotics

正3-11 September,2014University of Bologna,Bologna,Italy www.summerscrews.org summerscrews2014.ing.unibo.it SUMMER 20SCREWS 14In 2014,our screw-theory school comes to the world's oldest university.In early September,Summer Screws'14 will gather six experts in the application of screw theory in robotics and up to 40 participants at the University of Bologna,Bologna,Italy.The school will teach attendees how to apply existing methods and empower them to develop new ones in their own research.The basic theoretical notions will be introduced in a rigorous manner,emphasizing examples,applications,and exercises.Scholarships are available.     

电站锅炉模糊风险评价方法研究与应用

针对电站锅炉风险等级评价问题,将模糊综合评价技术应用到电站锅炉风险等级评价中。开展了电站锅炉失效影响因素及模糊评价因素的重要程度分析,建立了一套科学合理适于在线评价的电站锅炉风险评价体系,提出了模糊综合评价技术与改进的模糊层次分析法相结合的模糊风险评价方法,利用改进的模糊层次分析法计算了指标体系中各层指标权重。对某一台电站锅炉的实际运行工况影响子因素进行了模糊风险评价,采用模糊合成算子进行模糊综合运算得到电了站锅炉运行工况影响子因素的评价向量。研究结果表明:电站锅炉的运行工况影响子因素的风险评价等级为第6级,失效可能性等级为小,该电站锅炉运行工况良好。     

INDUSTRIAL ENGINEERING AND VISUALISATION-A PRODUCT DEVELOPMENT PERSPECTIVE

Taking the actual project of teaching and researching process for example, the relationship between the industrial engineering and product development is discussed. And use the novel visualization technology to support the industrial engineering and product development. How to use the new computer modeling and simulating technologies to support the product development and industrial engineering, is introduced especially. The support includes both domestic products and industrial systems. The visualization and computer technologies take a very important role in some system or multi-direction modeling, those technologies mentioned above can help the industrial engineers study the effect of design on the whole life circle, including the producing steps. So the engineers can avoid making the wrong decision which may cause bad effects on the whole industrial engineering.     

Non-monotonic material contrast in scanning ion and scanning electron images

30 keV Ga⁺ focused ion beam induced secondary electron (iSE) imaging was used to determine the relative contrast between several materials. The iSE signal compared from C, Si, Al, Ti, Cr, Ni, Cu, Mo, Ag, and W metal layers does not decrease with an increase in target atomic number Z₂, and shows a non-monotonic relationship between contrast and Z₂. The non-monotonic relationship is attributed to periodic fluctuations of the stopping power and sputter yield inherent to the ion–solid interactions. In addition, material contrast from electron-induced secondary electron (eSE) and backscattered electron (BSE) images using scanning electron microscopy (SEM) also shows non-monotonic contrast as a function of Z₂, following the periodic behavior of the stopping power for electron–solid interactions. A comparison of the iSE and eSE results shows similar relative contrast between the metal layers, and not complementary contrast as conventionally understood. These similarities in the contrast behavior can be attributed to similarities in the periodic and non-monotonic function defined by incident particle–solid interaction theory.     

Application of Feature Extraction through Convolution Neural Networks and SVM Classifier for Robust Grading of Apples

This paper proposes a novel grading method of apples,in an automated grading device that uses convolutional neural networks to extract the size,color,texture,an...