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设计名称
  机械设计理论
设计编号
  A8-170
设计软件
  Word
包含内容
  WORD文档
说明书页数
  08页(中英文)
图纸数量
  机械翻译(无图)
推荐指数
  较好
价格:
  优惠中
整理日期
  2012,07,19
整理人
  小木
购买流程
  <点此查看如何购买本站设计>
设计简介

Machine design theory

I. Introduction
Mechanical engineering, an important and widely applied engineering field closely related to people
′s social activities, provides manufacturing technologies and equipment to create material wealth and promote social progress in the construction of China′s national economy. As a traditional engineering field since the beginning of human history, mechanical engineering has always been the focus of all kinds of production activities. For instance, the First and Second Industrial Revolutions, as well as the present Information Revolution, are all directly or indirectly related to its development. Mechanical engineering is also a rapidly developing field. With the growth and permeation of electronic technology, automation technology, computer and software technique, material science, the foundation of the field has been enriched, the research in this field has been broadened and developed. Therefore, mechanical products and production processes are promoted to develop toward precision, automation, intelligence, progression, integration and high efficiency.
II..Machine design theory
The machine design is through designs the new product or improves the old product to meet the human need the application technical science. It involves the project technology each domain, mainly studies the product the size, the shape and the detailed structure basic idea, but also must study the product the personnel which in aspect the and so on manufacture, sale and use question.
Carries on each kind of machine design work to be usually called designs the personnel or machine design engineer. The machine design is a creative work. Project engineer not only must have the creativity in the work, but also must in aspect and so on mechanical drawing, kinematics, engineerig material, materials mechanics and machine manufacture technology has the deep elementary knowledge.
If front sues, the machine design goal is the production can meet the human need the product. The invention, the discovery and technical knowledge itself certainly not necessarily can bring the advantage to the humanity, only has when they are applied can produce on the product the benefit. Thus, should realize to carries on before the design in a specific product, must first determine whether the people do need this kind of product
Must regard as the machine design is the machine design personnel carries on using creative ability the product design, the system analysis and a formulation product manufacture technology good opportunity. Grasps the project elementary knowledge to have to memorize some data and the formula is more important than. The merely service data and the formula is insufficient to the completely decision which makes in a good design needs. On the other hand, should be earnest precisely carries on all operations. For example, even if places wrong a decimal point position, also can cause the correct design to turn wrongly.
A good design personnel should dare to propose the new idea, moreover is willing to undertake the certain risk, when the new method is not suitable, use original method. Therefore, designs the personnel to have to have to have the patience, because spends the time and the endeavor certainly cannot guarantee brings successfully. A brand-new design, the request screen abandons obsoletely many, knows very well the method for the people. Because many person of conservativeness, does this certainly is not an easy matter. A mechanical designer should unceasingly explore the improvement existing product the method, should earnestly choose originally, the process confirmation principle of design in this process, with has not unified it after the confirmation new idea.
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机械设计理论
一、概述
机械工程是为国民经济建设和社会发展提供各类机械装备和生产制造技术以创造物质财富和提高社会文明水准的重要工程领域,是与人类社会活动关系十分密切、应用非常广泛的工程领域。它是一个传统的工程领域,自人类有史以来,就为生产活动所关注,第一次工业革命、第二次工业革命乃至当前的信息革命,无不直接或间接地同机械工程的发展有密切关系;它也是一个发展迅速的工程领域,随着电子技术、自动化技术、计算机及软件技术、材料科学的发展和渗透,充实和丰富了本领域的基础,拓宽和发展了本领域的研究范畴,并促进机械产品和生产过程向精密化、自动化、智能化、连续化、高效化、集成化方向发展。
本领域涉及机械设计、制造、试验、使用、维修等基础理论、技术和方法。并与材料工程、动力工程、电气工程、电子与信息工程、控制工程、计算机技术、工业设计工程等工程领域及力学学科密切相关。
二、机械设计理论
机械设计是一门通过设计新产品或者改进老产品来满足人类需求的应用技术科学。它涉及工程技术的各个领域,主要研究产品的尺寸、形状和详细结构的基本构思,还要研究产品在制造、销售和使用等方面的问题。
进行各种机械设计工作的人员通常被称为设计人员或者机械设计工程师。机械设计是一项创造性的工作。设计工程师不仅在工作上要有创造性,还必须在机械制图、运动学、工程材料、材料力学和机械制造工艺学等方面具有深厚的基础知识。
如前所诉,机械设计的目的是生产能够满足人类需求的产品。发明、发现和科技知识本身并不一定能给人类带来好处,只有当它们被应用在产品上才能产生效益。因而,应该认识到在一个特定的产品进行设计之前,必须先确定人们是否需要这种产品。
应当把机械设计看成是机械设计人员运用创造性的才能进行产品设计、系统分析和制定产品的制造工艺学的一个良机。掌握工程基础知识要比熟记一些数据和公式更为重要。仅仅使用数据和公式是不足以在一个好的设计中做出所需的全部决定的。另一方面,应该认真精确的进行所有运算。例如,即使将一个小数点的位置放错,也会使正确的设计变成错误的。
一个好的设计人员应该勇于提出新的想法,而且愿意承担一定的风险,当新的方法不适用时,就使用原来的方法。因此,设计人员必须要有耐心,因为 所花费的时间和努力并不能保证带来成功。一个全新的设计,要求屏弃许多陈旧的,为人们所熟知的方法。由于许多人墨守成规,这样做并不是一件容易的事。一位机械设计师应该不断地探索改进现有的产品的方法,在此过程中应该认真选择原有的、经过验证的设计原理,将其与未经过验证的新观念结合起来。
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