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The Computer in Die Design

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The Computer in Die Design --- Aheadmold

Chapter 7    CAD/CAM/CAE

The Computer in Die Design

The term CAD is alternately used to mean computer aided design and computer aided drafting. Actually it can mean either one or both of these concepts, and the tool designer will have occasion to use it in both forms.
CAD computer aided design means using the computer and peripheral devices to simplify and enhance the design process. CAD computer aided drafting means using the computer and peripheral devices to produce the documentation and graphics for the design process. This documentation usually includes such things as preliminary drawings, working drawings, parts lists, and design calculations.
A CAD system, whether taken to mean computer aided design system or computer aided drafting system, consists of three basic components: (1) hardware, (2) software, and (3) users. The hardware components of a typical CAD system include a processor, a system display, a keyboard, a digitizer, and a plotter. The software component of a CAD system consists of the programs which allow it to perform design and drafting functions. The user is the tool designer who uses the hardware and software to simplify and enhance the design process.
The broad-based emergence of CAD on an industry-wide basis did not begin to materialize until the 1980’s. However, CAD as a concept is not new. Although it has changed drastically over the years, CAD had its beginnings almost thirty years ago during the middle 1950’s. Some of the first computers included graphics displays. Now a graphics display is an integral part of every CAD system.
Graphics displays represented the first real step toward bringing the worlds of tool design and the computer together. The plotters depicted in figure, represented the next step. With the advent of the digitizing tablet in the early 1960’s, CAD hardware as we know it today began to take shape. The development of computer graphics software followed soon after these hardware developments.
Early CAD systems were large, cumbersome, and expensive. So expensive, in fact, that only the largest companies could afford them. During the late 1950’s and early 1960’s, CAD was looked on as an interesting, but impractical novelty that had only limited potential in tool design applications. However, with the introduction of the silicon chip during the 1970’s, computers began to take their place in the world of tool design.
Integrated circuits on silicon chips allowed full scale computers to be packaged in small consoles no larger than television sets. These “mini-computers” had all of the characteristics of full scale computers, but they were smaller and considerably less expensive. Even smaller computers called microcomputers followed soon after.
The 1970’s saw continued advances in CAD hardware and software technology. So much so that by the beginning of the 1980’s, making and marketing CAD systems had become a growth industry. Also, CAD has been transformed from its status of impractical novelty to its new status as one of the most important inventions to date. By 1980, numerous CAD systems were available ranging in sizes from microcomputer systems to large minicomputer and mainframe systems.

Article come from China injection tools maker - AHEADMOLD, website is WWW.AHEADMOLD.COM.


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