A Study of Auto Cross-Paper Cutting Machine

传统的平张式切纸机对纸垛只能做横切而不能做纵切的操作，本文设计了一种新型的全自动纵横切纸机，它在原有平张式切纸机结构的基础上进行改造和创新，该新型切纸机同时具有横切和纵切两个功能，纸垛送入切纸机后，能自动完成横切、纵切两个操作，直接输出成品。本文对该全自动纵横切纸机的主要研究内容包括：(1)分析比较现行的切纸机的机构和功能，制定出全自动纵横切纸机的工作原理和设计方案；完成全自动纵横切纸机的自主创新部分的结构即工作台运送装置的结构图纸设计。(2)用SOLIDWORK软件对整套全自动纵横切纸机系统建立模型，绘出了全自动纵横切纸机的三维立体图；(3)对所设计的工作台运送装置的结构进行了强度分析和校核...The traditional paper cutting machine has only one direction to cut paper. The new type of full auto-cross paper cutting machine has been designed in this thesis. The advantage of this auto-cross paper cutting machine is the two directions to cut paper. The productions will be made out when the paper has been sent to the new machine, it will be finished the horizontal and vertical direction cuttin...学位：工学硕士院系专业：物理与机电工程学院机电工程系_精密仪器及机械学号：S20042902

The Design of a Control System for a Type of Automatic Freezing Tray Machine

为一种新型冷冻盘自动加工机设计一套完整的控制系统.对该冷冻盘机的液压系统和电气系统进行了详细分析,给出了具体的软、硬件实现办法,将液压控制和PlC控制相结合,能够实现冷冻盘的全自动生产.实际应用表明:该机的控制系统工作可靠,能完全满足产品的规格要求.A control system was designed for a novel type of automatic freezing tray machine.The control system,by combining hydraulic control and PLC control,could realize the completely automatic operation of the freezing tray.In the mean time,the hydraulic system and electrical system of the freezing tray machine were studied and designed in detail.Real applications showed that the control system was reliable,and could meet all the specific requirements of the products

Analysis of the Festo CLR Cylinder Performance

本文对Clr气缸工作性能的实验研究,目的是为了满足数控机床气动随行夹具中气缸的旋转夹紧要求。利用PlC控制器、气阀、气缸、传感器等元器件搭建实验平台。对主要实验步骤进行详细分析,通过实验论证fESTO Clr直线摆动夹紧气缸完全满足气动随行夹具工作要求。In this paper,we introduced an experiment to study the performance of pneumatic cylinder.In order to meet the requirements of the line/rotation clamping cylinder in CNC machine tools pneumatic clamp accompanied system.Using PLC controller,valves,cylinders,sensors and other components to build an experimental platform,the main experimental steps have been analyzed in details.Through the different kinds of experimental data demonstrating the Festo CLR line/rotation clamping cylinder is fit for the requirement of practical work

The application and research of the aircraft flexible fixture

主要研究气动、液压与电传技术在航空制造业中装配工艺中的应用。对研制出数控机床气动柔性夹紧系统,及其在飞机上零件加工上的应用进行了详细论述,包括柔性系统的机构组成、工作原理及PlC控制系统。该技术的突破为我国飞机数字化加工装配提供了参考价值,并将促进航空制造业的跨越式发展。The application of the pneumatic,hydraulic and power transmission for assembly process and equipment in aviation manufacturing industry is study.A novel type of CNC Aircraft Flexible Fixture machine system has been made out,and applied in manufacturing the aircraft parts.The system is including in architecture of the composition,working theory,PLC control system.It has a great signification of the manufacturing technology for aircraft digital processing,manufacturing and assembling,and promoting the developing of aircraft manufacturing

Design and research of automatic clock needle machine with pneumatic and PLC control technology

传统的表针加工采用半自动化操作,常因操作不慎而造成原材料浪费,而且也存在极大的安全隐患。该文基于气动PlC控制技术开发了一种新型全自动表针加工机,体现了机电一体化的技术优势,实现全自动操作,安全且加工质量有保证,加工速度也比之前提高了3~4倍。该文详细介绍了这种全自动表针加工机的结构、工作原理以及控制和气动系统的实现方法

The Design and PLC Control Principle of a New Automatic Frozen Plate Moulding Machine

自创了一台液压控制的具有自动停止、状态检测和过载保护等功能的全自动冻盘成型机,由液压系统、机械系统和PLC控制系统的硬件、软件及控制电路等组成,具有体积小、结构简单、可靠性高、系统稳定等特点,其原理和方法可推广到其他全自动液压机的设计。A self established hydraulic controlled full automatic frozen plate moulding machine is designed,that made of hydraulic system,mechanical system and the hardware,software and control circuit of PLC control system.The system has some advanced functions such as automatic stop,work condition monitoring and automatic overload protecting,and so on.The system has the advantages of simple structure,small volume,high reliability,short development time,and high stability.The principle and the method of this equipment could be applied and promoted to the design for other automatic control hydraulic machines

1982-2006年新疆不同植被类型植被覆盖度变化特征[C]

地表植被是一定水分、气温及其他要素共同作用下的产物,不同植被类型直接反映了不同水热组合及其差异性.植被覆盖变化是生态环境变化的直接结果,对全球能量循环及物质的生物化学循环具有重要的影响,植被覆盖变化研究在全球变化研究中具有重要意义.新疆地处亚欧大陆腹地,植被具有明显的纬向水平地带性分布规律,植被类型丰富,研究新疆地区植被变化具有重要意义

基于PostGIS和ROR开源技术的干旱区小城镇规划审批系统研究/An Administrative Permits System for Urban Planning in Acid Area Based on PostGIS and Ruby on Rails Open Source Technology[J]

针对干旱区绿洲小城镇可持续发展的自身特点,从汇聚整个干旱区绿洲小城镇政府优势信息资源的角度出发进行系统整体框架设计,利用开源WebGIS技术、空间数据库PostgreSQL/PostGIS技术,结合基于Ruby语言的互联网应用技术框架Ruby on Rails,开发了一套干旱区绿洲小城镇规划审批系统.通过在项目研究区沙湾县的试点,在解决干旱区绿洲小城镇规划审批实际问题的同时,为干旱区绿洲小城镇信息化建设的可持续发展提供了一条新思路

干旱区节水型园林植物群落景观评价——以吐鲁番沙漠植物园人工荒漠植物群落为例/Landscape Evaluation on Water-saving Gardening Plant Communities in Arid Region——A Case of Artificial Desert Plant Communities in Turpan Desert Botanical Garden[J]

以位于暖温带极端干旱区的吐鲁番沙漠植物园为研究地点,选择了表现5种植物景观构成特征的典型荒漠植物群落(半开敞空间、垂直空间、完全封闭空间、覆盖空间和开敞空间)作为研究对象,通过AHP法建立了节水型园林植物群落景观评价模型,并对不同景观类型的植物群落景观进行了定量评价分析.结果表明:植物形态、色彩搭配、物种多样性、物种适应性和乡土特色是影响节水型园林植物群落景观效果的主要因素.提出了这5种类型植物群落的景观结构优化建议