CA6140车床拨叉[831007] 数控加工工艺及夹具工装设计【钻扩22和55孔气动夹具】课程设计
收藏
资源目录
压缩包内文档预览：
编号：94588891
类型：共享资源
大小：601.92KB
格式：ZIP
上传时间：2020-09-14
上传人：好资料QQ****51605
认证信息
个人认证
孙**（实名认证）
江苏
IP属地：江苏
20
积分
- 关 键 词：
-
831007
钻扩22和55孔气动夹具
CA6140车床拨叉[831007]
数控加工工艺及夹具工装设计【钻扩22和55孔气动夹具】课程设计
CA6140
车床
数控
加工
工艺
夹具
工装
设计
钻扩
- 资源描述：
-
喜欢就充值下载吧。。。资源目录里展示的全都有，，下载后全都有,,请放心下载，原稿所见即得所得哦=====================喜欢就充值下载吧。。。资源目录里展示的全都有，，下载后全都有,,请放心下载，原稿所见即得所得哦=====================喜欢就充值下载吧。。。资源目录里展示的全都有，，下载后全都有,,请放心下载，原稿所见即得所得哦=====================喜欢就充值下载吧。。。资源目录里展示的全都有，，下载后全都有,,请放心下载，原稿所见即得所得哦=====================喜欢就充值下载吧。。。资源目录里展示的全都有，，下载后全都有,,请放心下载，原稿所见即得所得哦=====================
- 内容简介：
-
Production Automation1.1.1 Automation Concepts Automation may be defined as a system that is relatively safe-operating .Such a system includes complex mechanical and electronic devices and computer-based system that the place of observation,effort,and decision by a human operator. It is a system that exhibits properties of human being by following predetermined operations or responding to encoded instructions.1.1.2 Computer process control Process control involves the control of variables in a manufacturing process, where one or any combination of materials and equipment produces or modifies a product to make it more useful and hence more valuable. In process control controls continuous operations. Two kinds of control systems are the open loop and the closed loop.In an open-loop control system, the computer dose not itself automate the process .That is ,there is no self-correction.The process remains under the direct control of human operators,who read form various sources of information such as instruments, set calibrated dials for process regulation, and change the controlling medium.Closed-loop control systems use computers to automate the process. He computer is directly in charge of the process. It sdjusts all controls form the information provided by sensing devices in the system to keep the process to the desired specifications, a technique that uses a feedback mechanism . Feedback is the action of measuring the difference between the actual result and the desired result and using that difference to drive the actual result toward the desired result. The term feedback comes forms from a measured sample of the output of the process (production) function that becomes the input of the control function . That is ,the output of the control function ,meeting special designed requirements is the input to the control system . Thus ,the signal begins at the output of the controlled production function and end at the input to the production. Typical functions of process control systems are moonitoring ,data logging, quality control, maximizing profit for a given out put, supervisory control , and factory information systems (FIS). Benefits of computer process control system are increased productivity , improved product quality ,and enhanced efficiency , safety , comfort ,and convenience.1.1.3 Management Information Systems (MIS)Management information systems are designed to aid in the performance of management functions.These systems are generated by computer systems and are developed to provide executives with up-to-the-minute information about the operations of the enterprise.When required, information systems are used to aid management in the decision-making functions of the enterprise . Viewing CIM (Computer Integrated Manufacturing) as an informations system for the enterprise for decision-making , CAPACS must be informations interconnected . As a result , there are many software packages associated with the CAPACS in Fig . 1 . 2 . Typical of there are CAPP , DCS , FIS and CAD . The concept of an MIS is a design objective , its goal being to get the correct information to the appropriate manager at the right time . As a result , MIS implementation varies considerably among manufacturing enterprises because of each organizations function , type of production , informations resources available , and organizational commitment to MIS .1.1.4 Engineering Computer are used extensively in most engineering functions . Engineering is a profession in which a knowledge of the natural sciences is applied with judgment to develop ways of using the materials and forces of nature . Typical engineering functions using CAPACS are design , process planning , analysis and optimization , synthesis , evaluation and documentation , simulation , modeling , and quality control planning . Using CAPACS in engineering increases the productivity of engineers and improves the quality of designs . For example ,the application of computers to an engineering design process is performed by a CAD system Engineers can design and thoroughly test concepts quickly and simply from one workstation . Computers permit engineers to take a concept from its original design through testing to numerical control (NC) output , or a combination of steps in between . They perform complex scientific and engineering computations rapidly with high accuracy , calculate physical properties before actual parts are made and provide a fast , easy method to create models of even the most complex parts . The computer has influenced the way products are designed , documented and released for production . As technology develops , engineering operations are becomeing more and more automated and are relieving the engineer of many tedious manual calculations . 1.1.5 Production Applications of computers to the production process encompass such functions as computer monitoring , supervisory computer control , direct digital control ( DDC) , material handing , product fabrication , assembly and test/inspection operations . New ideas and technology developments are gaining acceptance on the factory floor . More important , the integration of more computers into the production process increases automation on the factory floor . Computer automation helps to organize , access , and provide vital information in a common date base system for use by all manufacturing operations . Computer automation helps to control and to schedule machines and process , and to control raw materials and parts . A computer automated system concept is shown in FIG . 1 . 3 . Each function in manufacturing has its own area controller under the control of a host computer in order to share information with other operations . 生产自动化1.1.1自动化概念自动化可以被定义为一个操作比较安全的系统。这个系统，包括复杂的机电设备和由一个人为操作员观察、尝试并决定其方位的电脑系统。它是一个按照事先确定的操作或应对编码指示来展现人的性能的系统。1.1.2计算机过程控制过程控制涉及到生产过程中的控制变量，在此生产过程中，一种或任意一种材料和设备联合生产或修改产品，使其更加有用，因此更有价值。过程控制控制不间断运行。控制系统有两种，即开环控制系统和闭环控制系统。在一个开环控制系统中，计算机本身不会使过程自动化。也就是说，没有自我更正.这个过程仍然直接受控于人为操作员，他阅读各种信息来源，如工具，建立校准盘的过程监管，来改变控制的媒介。闭环控制系统，使用计算机来实现过程自动化。电脑直接负责其过程。它根据传感装置所提供的信息对所有控制适时调整，以保持这一过程所需的规格及使用一个反馈机制的技术。反馈是衡量实际结果与期望的结果之间差异的行为，利用这种差异，以推动实际结果向所期望的结果的进展。期限反馈根据过程（生产）功能输出的测量样本而形成格式，进而转为控制功能的输入。也就是说，控制功能的输出，如果满足了特殊设计的要求即可转变成控制功能的输入。因此，信号始于控制生产功能输出之时并结束于生产功能输入之时。 过程控制系统的典型功能是操作，记录数据，控制质量，为某一输出，监控，和工厂信息系统（电）提供最大限度的好处 。计算机过程控制系统的优点在于能够提高生产率，改进产品质量和提高效率，且安全，舒适和方便。1.1.3 管理信息系统（ MIS ） 管理信息系统用来为管理功能的实施提供帮助。这些系统由计算机系统产生，并被用来为管理人员提供有关企业运作的最新信息。我们可用信息系统来帮助企业制定决策。例如，可把计算机集成制造（计算机集成制造）作为一个信息系统，为企业决策， CAPACS必须是相互关联的信息。其结果是，有许多与CAPACS的图1.2 相关的软件包。典型的有 CAPP系统，集散控制系统，模糊推理系统和计算机辅助设计。 管理信息系统的概念是一个设计目标，其目的是在合适的时间，得到正确
- 温馨提示:
1: 本站所有资源如无特殊说明，都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
2: 本站的文档不包含任何第三方提供的附件图纸等，如果需要附件，请联系上传者。文件的所有权益归上传用户所有。
3.本站RAR压缩包中若带图纸，网页内容里面会有图纸预览，若没有图纸预览就没有图纸。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 人人文库网仅提供信息存储空间，仅对用户上传内容的表现方式做保护处理，对用户上传分享的文档内容本身不做任何修改或编辑，并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容，请与我们联系，我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
人人文库网所有资源均是用户自行上传分享，仅供网友学习交流，未经上传用户书面授权，请勿作他用。
川公网安备: 51019002004831号