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English
At the beginning of the 21st century, the developing character of machinery manufacturing industry is the comprehensive utilization of high-tech, and its tendency are showed in 4 aspect: flexibility, agility, intelligentialize and informationize. And it’s no longer the mechanical science in the 20th to 40th of 20 century, which is based on the camshaft and its machinery, use specialized machine, fixture, tool and measuring instrument forming a flow-line style produce line—rigidity automation, and its disadvantage is largely effect the update of the product and obstruct the using of the high-tech, which make the product lacking competitive power.
At present, in the machinery manufacturing industry of our country, some state-owned enterprises are under money-lossing, the products are lack of competitive power in the domestic market, large quantity products are overstocked, this is not only related with management system, but also with the old machine and the knowledge of engineering technicians are out of date. In order to adapt to the market-oriented economy, revive our nation’s machinery manufacturing industry, it’s important for us to recognize the machinery manufacturing industry, know about the developing character and tendency of the international machinery manufacturing industry and the 21st century machinery manufacturing industry.
Manufacturing technology is the backbone of the national economy’s development.
At the late 20th century, 1999, there is a CIRP, the chairman of the CIRP, who is a Japanese named Yoshikawa, pointed out in his report, the economy compete of the developed countries is the compete of manufacturing technology. In the constitute of productivity of the national enterprise, the function of the manufacturing technology is account for 55% to 60%, Japan and the four Asia tigers are largely concerned with their high value of manufacturing technology. These countries and district are high appreciated the high-tech all over the world, they buy them and through manufacturing technology forming their unique product and occupy the world market. This is why they can succeed.
On the one hand, machinery manufacturing industry must lead the information science and material science to update themselves; on the other hand, information science and material science must depend on the machinery manufacturing industry to make the new progress. For example, during the development of the computer, the most crucial thing is the manufacture of the high density large scale integrated circuit and memory device, they all depend on the development of the manufacturing technology.
Scientists in America and Japan countries have taken the manufacturing science, information science, material science and biology as the support science of the modern society. The America because of the lacking of the importance of the manufacturing science, that has made lots of their product lacking competitive power. Aiming at this, America government has approved the modern manufacturing plan to the only focus on supporting science field of the national budget in 1996, this has lead to a new compete during the America, Japan and Europe in manufacturing technology.
Recognize the machinery manufacturing industry also including another meaning. It’s no longer the traditional machine manufacturing, that is to say the so-called machining, it’s the combination of machinery, electric, ptotology, information science, material science, biology, laser optics and management ,etc, a new technology and industrial.
Detection technology is the fundamental guarantee of the development of the modern mechanical manufacturing technology.
During the automation producing process, many information need to be detected, trouble in the production need to be detected to find and prevent, the required precision also need to be detected. Without reliable detection technology, there is no modernization and automation, and no high efficiency and quality.
In the annual meeting, several articles about “the new development of assembly system” pointed out that, in order to adapt to the flexibility automation, the robot must contain the visual system, which can recognize the shape and gesture of the assembled parts, and also should equipped with touch sensor to precision the location and control the holding force. Automatic guided vehicle also should be equipped with visual or acoustic emission sensors to detect the barrier in the move. In the article “sensor during the laser processing” and “surface roughness and surface topography” , both of them take the detection as the main line to discuss. In the article “sensor during the laser processing”, laser processing itself is a blind process, it only process a point. In order to get the required shape, it need to be controlled by detecting. Laser machining is a process of corrosion, its shape need to be detected and controlled by the sensor. The most crucial of laser machining is sensor. In this annual meeting, many articles pointed out that: the more need of flexibility, the more need of sensor.
The character of the current mechanical manufacturing is the comprehensive utilization of high-tech.
Current mechanical manufacturing technology uses the micro-electronic technique, computer technology, laser machining technology in information handling and controlling aspect, also in machining principle and cutting process even the tool use the modern high-tech, it’s no longer the traditional mechanical manufacturing. For example the laser machining, control the relative movement of light and workpiece, it can process hole, groove, two-dimension and three dimension carve surface etc and finish drilling, milling and boring in one machine. It may lead to a new revolutionary in the 21th first. Laser cutting, weld, tailor, contour machining, laser quick alignment and laser measuring technology, all have been largely used in the automobile industrial and win a great economic benefit.
At present, it’s not accuracy to divide the mechanical manufacturing into cutting manufacturing and non-chip manufacturing. Entering in to the 1990th, there is a new invention of quick forming manufacturing method. The laser machine send a ultraviolet ray ,through the optics system , converge to a narrow beam , and scam the liquid plastic in the container. This kind of plastic will use the actinism of ultraviolet ray to solidify the surface. According to the required shape and size of the parts, through the control of computer, expose under the forming parts, the worktable with liquid plastic can move in the lateral direction and in the vertical direction. With the cooperation of the laser scam movement and worktable lateral move, form a thin immobilizing membrane when the laser scam. The worktable down 0.05mm when finish scamming a surface, thus a the plastic solidify according to the specified shape and it can be made to any parts. This kind of processing method is one of the future development direction.
Many industrial developed countries’ scholar and specialist , when talking about the flexibility , agility, intelligentize and informationize, all of them point out that a mechanical manufacturing engineering should master and comprehensive utilization the engineering math, laser optics, laser electronic technology, computer technology, control theory, biology, material science, management science and humanity science etc high technology. All these technology change the aspect of mechanical manufacturing, and the development of mechanical technology provide a new tool for the science and promote the develop the science.
