Study on Measurement System of High Precision Axisymmetrical Aspheric Surface and its Tools

高精度非球面制造技术是精密加工和超精密加工领域的热点问题。一直以来，非球面元件制造难，测量技术更是非球面制造技术中的瓶颈，各国专家和学者投入大量的人力和物力全方位地研究非球面的加工和测量问题。本课题来源于国家863科技计划项目“大型光学非球面透镜数控高效加工技术”。基于补偿加工的在线测量技术是目前大口径非球面加工制造采用的主流测量技术之一，本课题的研究目的就是建立一个基于补偿加工的在线测量系统，用于：1．进行非球面工件在线测量，为非球面补偿加工提供补偿数据。2．提供对非球面加工砂轮表面的测量，为砂轮提供精度指标。本课题的主要研究工作如下：1、分析与比较各种非球面检测技术的优缺点。2、分析补偿加...The aspheric manufacture technique of high accuracy is a heat point problem in the field of precisely processes and exceeding precisely processes.Up to now,to manufacture aspheric element is hard , and its measurement technique is the vase throat in the aspheric manufacture technique.Many state nation specialists and learned men are putting their great quantity labour power and resource in all di...学位：工学硕士院系专业：物理与机电工程学院机电工程系_测试计量技术及仪器学号：20022901

基于高精度非球面测量的数据采集与处理系统研究

本文根据高精度非球面补偿加工的要求,提出一种高精度非球面测量及数据处理系统。系统基于工控PC机和Windows98操作系统,用Visual C++作为开发工具,完成了硬件设计,数据采集与数据处理,非球面测量误差的评价。通过实验得到测量系统的随机误差,验证了系统的可靠性。国家“8638042416”基金资助项

高精度非球面制造系统控制软件的设计

根据高精度非球面制造及测量的需求,设计并实现了高精度非球面制造及测量系统的控制软件。系统基于工控PC机和Windows98操作系统,并选用Delphi 6.0和Visual Fortran作为开发工具。系统采用在线误差补偿加工技术,可选择平面砂轮和圆弧砂轮两种加工方式,达到加工高精度光学非球面镜的要求。国家“8638042416”基金资助项

RESEARCH ON FEED VELOCITY CONTROL MODEL OF AXISYMMETRIC ASPHERIC

【中文文摘】本文根据轴对称非球面的加工误差特性 ,通过分析轴对称非球面磨削加工中砂轮磨削线速度、进给速度对加工精度影响的条件 ,提出控制砂轮进给速度使轴对称非球面工件各点磨削量均匀的方法。该技术避免了传统加工方法中原理上固有的磨削量差异缺陷 ,提高了系统的加工精度。研究结果表明 :进给速度控制方法针对轴对称非球面加工中常用的平面砂轮、圆弧砂轮、球面砂轮 ,均得到了良好的控制效果 ;采用新方法的数学模型更接近于理论计算轨迹 ,可以进一步提高工件的加工精度 ;新方法进给速度由外沿加工至中心部分 ,进给速度逐渐加快 ;并且变化率也逐渐增大。 【英文文摘】According to the axisymmetric aspheric machining error feature, this paper analyses the parameters which influence the machining accuracy of workpiece, such as grinding linear velocity and feed velocity of grinding wheel in axisymmetric aspheric machining. And a new technology that controls the feed velocity to uniform the grinding removal quantity in axisymmetric aspheric machining is put forward. The technology can avoid the defect of the differential machining removal quantity existed in the traditional ...国家 863资助项目 (86380 4 2 4 1 6

Study on Data Collection and Processing System of High-precision Aspheric Surface Measured

根据高精度非球面补偿加工的要求,提出一种高精度非球面测量及数据处理系统.系统基于工控PC机和Windows98操作系统,用VisualC++作为开发工具,完成了硬件设计、数据采集、数据处理和非球面测量误差的评价.通过实验得到测量系统的随机误差,验证了系统的可靠性.According to the requirement of the high precision aspheric surface compensation manufacturing, a high precision measurement and data processing system was designed and regulated. It is based on industrial PC and Windows98 operating system. Using the development tool of Visual C++, system hardware design, data collection and processing, and measurement error evaluation of aspheric surface have been finished. In order to testify the reliability of measurement system, the random error of system is obtained by experiment.国家"8638042416"基金资

Study on Control Software of High-precision Aspheric Surface Manufacturing System

根据高精度非球面制造及测量的需求,设计并实现了高精度非球面制造及测量系统的控制软件.系统基于工控PC机和Windows98操作系统,并选用Delphi6.0和VisualFortran作为开发工具.系统采用在线误差补偿加工技术,选择平面砂轮和圆弧砂轮两种加工方式,可达到加工高精度光学非球面镜的要求.According to the requirement of the high precision aspheric surface manufacturing and measurement, we design and realize a high precision manufacturing and measurement system with the technology of error compensation. It is based on industrial PC and Windows98 operating system. By using the development tool of Delphi 6.0 and Visual Fortran, the system of high machining precision has been realized with the plane grinding wheel and arc grinding wheel.国家"8638042416"基金资

ERROR SEPARATION AND COMPENSATION TECHNOLOGY OF AXISYMM-ETRIC ASPHERIC MACHINING

分析轴对称非球面磨削加工中砂轮尺寸精度和形状精度等因素对加工工件精度的影响,提出适用于非球面 加工的工件表面误差多参数分步分离的数学模型。新方法解决了原有加工存在的系统误差分离不彻底、补偿加工 所需要的各项参数难确定等问题。试验结果表明:该数学模型更接近于理论计算轨迹,可以有效地减小加工误差, 进一步提高工件的加工精度。By analyzing the workpiece's machining accuracy influences of the parameters, such as measurement accuracy and shape analyzing of grinding wheel in axisymmetric aspheric machining, a mathematic model that separates workpiece surface errors step by step in axisymmetric aspheric machining is put forward. Then the parameters and data of compensation machining can be obtained. The experimental results show that new method of mathematic model is closer to calculating locus in theory. It can reduce machining error effectively and improve the machining accuracy greatly.国家863计划资助项目(8638042416)

伊犁河谷红地球葡萄标准化栽培技术研究及产业化建设

课题根据伊犁河谷红地球葡产区的气候条件，确定了红地球葡萄的定植方式采用小棚架栽植效果好，修剪方式采用“独龙干”和“双龙干”较为适宜，确定了疏花疏果时间及技术，提高了红地球葡萄一级果率，其中鲜食葡萄二次套袋法技术，既可以有效的防止果穗日灼现象的发生，同时又可控制果实颜色，防止果穗的污染；确定了红地球葡萄防止日灼的主要方法是：果穗套袋、增加遮荫面积和采用棚架栽培，抬高结果部位等，采用滴灌方式进行灌溉，既达到了经济用水降低生产成本的目的，规范了红地球葡萄无公害生产整个环节的技术规程，红地球葡萄的七个标准化栽培技术规程在生产过程中的贯彻实施；初步形成了“果农＋基地＋协会＋经销商”产业化模式。 成果类别： 应用技