Chapter 5 The Computers Applications in Industry.

Chapter 5 The Computers’ Applications in Industry

Lesson 5.1 CAD/CAM A key goal of CAD/CAM (Figure 5-1) is to produce data can be used in manufacturing a product while developing the database for the design of that product.

Figure 5-1 The block diagram of a CAD/CAM system


Lesson 5.1 CAD/CAM


Since the advent of CAD/CAM, other terms have developed:

(1) Computer-aided design and manufacturing (CAD/CAM).

(2) Computer-aided engineering (CAE).

(3) Computer graphics (CG).

(5) Computer-aided design and drafting (CADD).

(4) Computer-aided process planning (CAPP).

Lesson 5.1 CAD/CAM


These spin-off terms all refer to specific aspects of the CAD/CAM concept.

Interactive computer graphics (ICG) plays an important role in CAD/CAM.

The applications of CAD/CAM can continually improve a company’s productivity, and competitiveness.

【译文】当数据库被成功建立时，传统上存在于零部件设计和制造之间的障碍就可消除了。在 CAD/CAM技术可以共享零部件设计和制造之间的通用数据资料。

Lesson 5.1 CAD/CAM


Notes

[1] When the database is successfully implemented, CAD/CAM should remove the “wall” that has traditionally existed between the design and manufacturing components. CAD/CAM involves the sharing of a common database between the design and manufacturing components.

【译文】通过使用计算机图形交互技术，设计师在逐步绘制所要设计产品的图像的同时，还可以将组成图像的电子数据储存起来。

Lesson 5.1 CAD/CAM


Notes

[2] Through the use of ICG, designer develop a graphic image of the product being designed while storing the data that electronically make up the graphic image.

【译文】 CAD/CAM 技术的优点在于：可提高生产率；获得更好的产品质量；通讯更便捷；与产品制造可共享通用数据资料；减少制作样品的费用；可以更快地响应客户要求。

Lesson 5.1 CAD/CAM


Notes

[3] The rational for CAD/CAM are: increased productivity; better quality; better communication; common database with manufacturing; reduced prototype construction costs; faster response to customers.

advent [t] n. 出现，到来automate [] v. 使自动化，自动化操作professional [] n. 专业人员

adj. 专业的database [] n. 数据库implement [] v. 贯彻，执行

n. 工具traditionally [] adv. 传统上spin-off 新兴的inclusive [] adj. 内容丰富的，包含的

Lesson 5.1 CAD/CAM


New Words and Expressions

integrated [] adj. 集成的interactive [] adj. 交互式的Interactive Computer Graphics(ICG) 计算机图形交互solid format 实体格式electronically []adv. 电子地geometric [] adj. 几何的manipulate [] v. 操作，处理reduction [] n. 缩影，减少peripheral [] adj. 外围的 n. 外围设备manual [] n. 手册，指南competitiveness []n. 竞争rational [5rAFEnl] n. 合理之处 adj. 合理的

Lesson 5.1 CAD/CAM


New Words and Expressions

I. Complete the following sentences according to the text.

(1) The graphic image can be presented in a ______________, _____________, or ______________.(2) Once created, these images can be easily ________ and manipulated in a variety of ways including enlargements, _____________, ____________, and movements.(3) An ICG system has three main components: ____________, ____________, and ____________.

Lesson 5.1 CAD/CAM


Exercises

(4) The applications of CAD/CAM can continually improve a company’s ___________, and, in turn, ________________.(5) The rational for CAD/CAM are: increased ______________; better __________; better communication; common ____________ with manufacturing; reduced __________ construction costs; faster response to customers.

Lesson 5.1 CAD/CAM


Exercises

I. Complete the following sentences according to the text.

II. Translate the following phrases into English.

(1) 计算机辅助设计与制造 ___________(2) 计算机辅助工程分析 _____________(3) 计算机辅助工艺规划 _____________(4) 计算机辅助设计与绘图 ___________(5) 计算机图形交互 _________________(6) 实体格式 _______________________(7) 技术手册 _______________________

Lesson 5.1 CAD/CAM


Exercises

III. Translate the following sentences into Chinese.

(1) Since the advent of computer technology, manufacturing professionals have wanted to automate the design process and use the database developed therein for automating manufacturing processes.(2) In the near future, some companies will not use drawings at all, but will be passing part information directly from design to manufacturing via a database.

Lesson 5.1 CAD/CAM


Exercises

Lesson 5.2 CAD/CAM’s Applications


CAD’s Benefits

Computer Aided Part Programming

NC Cutter-Path Verification

Computer Aided Process Planning



Group Technology

Material Requirements Planning

Robotics

Computer Integrated Manufacturing



Flexible Manufacturing System (FMS)

Figure 5-2 The assembly line and the transfer line

【译文】零件编程软件是并入到 CAM 软件包中的，它有一个动态的图形数据库，用来支持实际的加工工序。这些加工工序可以被显示、编辑、串联或删除。


Lesson 5.2 CAD/CAM’s Applications Notes

[1] Part programming software is incorporated into a family of CAM software and has a dynamic graphics database to hold the actual machining sequences. These sequences can be viewed, edited, chained, or deleted.

【译文】当零件加工程序是基于 CAD/CAM 系统生成时，可以使用实体模型生成一副工件、刀具、切削路径以及成品的逼真图片。



[2] When a part program is generated using a CAD/CAM system, a solid model may be used to generate a realistic picture of the workpiece, the tools, the cutter path and the finished part.

【译文】工艺设计是设计与制造之间的关键桥梁，设计信息只有通过工艺设计才能被转换成制造语言。



【分析】 through...language 是 process planning 的非限制性定语从句，说明工艺设计的作用。

Notes

[3] Process planning, through which design information can be translated into manufacturing language, is the critical bridge between design and manufacturing.

【译文】物料清单可以直接从 CAD 系统中获得，这些清单的信息包括库存号、目录名、库存量、计算单位、最小库存量、外购或自制的提前时间和每个零件和供应商的具体说明。



[4] The bills of materials can come directly from the CAD system, which include the stock number, name of item, quantity in stock, unit of measure, minimum stock level, lead time of purchased or manufactured in-house, and the specifications of each component part and suppliers.

【译文】被用于自动装配操作的机械手 ( 工业机器人 ) 主要是进行盘式和直线式的传输。



[5] Robots are widely used in automated assembly operations for circular and linear transfer.

【译文】 CIM( 计算机集成制造 ) 包含许多先进的制造技术，例如 CNC( 计算机数控 ) 、 CAD/CAM 、工业机器人技术和即时交货技术。



[6] CIM encompasses many of the other advanced manufacturing technologies such as CNC, CAD/CAM, robotics and just-in-time delivery.

accuracy [] n. 精确性，准确性recall [] v. 调用，记起，回想enhance [] v. 增强，提高modification [] n. 更改，修正ease [] v. 使……轻松，安逸

n. 悠闲，不费力complex [] adj. 复杂的，合成的incorporate [] v. 合并，混合dynamic [] adj. 动态的，动力的tooling list 刀具列表machining sequences 工序


Lesson 5.2 CAD/CAM’s Applications New Words and Expressions

tool path 刀路verify [] v. 校验，核实eliminate [] v. 消除，排除potential [] adj. 潜在的，可能的dry cut 空切detect [] v. 发觉，侦查，探测gross [] adj. 粗略的，毛的，大致的wax [] n. 石蜡generate [] v. 产生realistic [] adj. 现实的 simulation [] n. 仿真，模拟



finished part 成品consistent [] adj. 一致的，坚固的accurate [] adj. 精确的，正确的allocate [] v. 分配，分派digit [] n. 数字reference [] n. 参考，提及，涉及bill [] n. 清单，账单，票据lead time 提前时间in-house 自制的circular transfer line 盘式传送线encompass [] v. 包围，环绕



just-in-time delivery 即时交货approach [] n. 方法，途径instantaneous[] adj. 即时的sequence [] v. 生成程序，使程序化

n. 顺序，程序domain [] n. 范围，领域fixed automation 刚性自动化flexible [] adj. 灵活的，柔软的tailor [] v. 裁剪，适应hybrid [] n. 混合

adj. 混合的



Translate the following phrases into Chinese.

(1) CNC ______________________(2) CAD ______________________(3) CAM ______________________(4) CIM ______________________(5) FMS ______________________(6) CAPP _____________________(7) fixed automation _____________(8) cutting simulation ____________(9) lead time ___________________

Lesson 5.1 CAD/CAM


Exercises

谢谢大家

Chapter 5 The Computers Applications in Industry.

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