【導讀】機，車輛，吊機，印刷機，洗衣機，和電影攝影機等。意義，不僅僅只是包括機械的設計。運動和結構方面及規(guī)定保留和圍欄是機械設。計要考慮的因素。開關、凸輪、閥門、器皿、攪拌機。的設備，新設備之前可能需要做一個函數(shù)。在初步設計階段,應該讓設計人員充分發(fā)揮創(chuàng)造,而不是（受制。于）每一種約束。通常情況下，必須提出。非常有可能在最后制定的計劃中，使用已經被接。最小重量,以及具有競爭力的成本。最佳比例和尺寸將尋找每個極加載部分,連同。這些重要的目標達。產品責任訴訟的設計師和強度材料選型中要使用最優(yōu)方案。原告指控制造商，并贏得了決定），全部或部分使用的材料的數(shù)據(jù)，數(shù)據(jù)，未經證實的，由一些完全不稱職的人選擇材料。究分析表明出現(xiàn)方向?？梢鸲鄻有?，或者功能性，經濟性和耐用產品的完善和備用。始階段，設計人員進行的初步設計與管理人員的交流和咨詢，并得到批準。

　　

【正文】 uest screen abandons absolutely 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. Human life can not be separated from the machinery, it is everywhere, but for the mechanical manufacturing, production, and its development and future, we know little about. After this semester, I have more knowledge and understanding of the profession of the mechanical. From the primitive society of early human use such as axes, knives and other simple tools, to a simple lever, pulley, human bicycles, animalKip Shum car tools, developed to a more plex hydraulic drive, winddriven Shuinian and windmills moreplex machinery. After the 18th century British Industrial Revolution, the steam engine, internal bustion engines, electric motors, mechanical power source for the rapid development of manufacturing, transport, human 12 beings began to enter the modern civilized society. The 20th century, the puter issuing automatic control technology, information technology, infectious anic bination of technology, so that the machinery is fully modernized phase. Robotics, CNC machine tools, highspeed delivery vehicles, heavy machinery and the large number of advanced machinery and equipment to accelerate the prosperity and progress of human society, humans can travel into space, landing on the moon, you can explore the vast depths of the sea, to live and pass below the surface all of which can not be separated from the machinery, the development of the machinery into the intelligent stage. Machinery has bee one of the five elements of production and services of modern society. The history of the development of the mechanical history of the development of human civilization. In ancient Chinese mechanical engineering, invention and creativity is very brilliant, such as grinding technology, metal smelting technology. China39。s machinery manufacturing industry developed after 1949. After the founding of new China, the tremendous achievements of China’s economy are inseparable from the progress of the manufacturing sector. After decades of struggle, China39。s manufacturing ponents with considerable scale and level of manufacturing systems, today China have bee a remarkable manufacturing country. Machinery manufacturing industry overall scale of production is constantly increasing, machinery manufacturing is more than 100 industry, million enterprises (large enterprises accounted for 1%) and 60,000 kinds of products a plete range of industrial system. For six consecutive years in China39。s largest export modity status, the machinery industry production capacity is 2600 times that of the liberation of the world 5, the machine has a world, vehicle production in the world 4. But we still need to clearly recognize that China is a big manufacturing country, far from being a manufacturing powerhouse. The overall size of the added value of product technology and per capita labor efficiency is far better than the United States, Japan and other manufacturing power. Therefore, the task of development of China39。s manufacturing industry a long way to go. With the diversification of the hightech development and social needs of the industrial production rapidly toward largescale, integrated and plex, so that the modern industrial machinery industry is facing new opportunities and challenges, and more emphasis on the creativity and the efficiency of the workers. Therefore need to continuously enhance the level of China39。s Mechanical Design Manufacturing and Automation, thereby contributing to the development of China39。s 13 machinery manufacturing industry