1、河北工程大学毕业设计 1 Milling machine of domestic and international research status and development trend Machinery industry is the national economic development as basic industry which provides technology and equipment, it is science and technology of the foundation, is the carrier of industrialization of n
2、ew and high technology, is the basis of national defense building industry, also be to raise people life quality to provide consumer electrical products industry. Machinery industry with a high degree of industrial linkage, elasticity of demand, the growth of economy to promote action is strong, the
3、 accumulation of state and social employment contribution is big wait for a characteristic. Invigorate the equipment manufacturing industry, is comprehensively implement the scientific outlook on development, take new-style industrialized way, enhance international competition ability, implementatio
4、n countryman economy continuable development strategy. Machine tool industry is an important part of the machinery industry, machinery industry is to provide manufacturing technology and equipment industry. Machine tools have an amount, yield, quality and quality, is a measure of a countrys industry
5、 an important indicator of the level of. So the machine tool industry in national economy and occupies an important position. Machine tool is cutting the metal blank processing machine parts of the machine, it is a manufacturing machine, it is also known as the machine or machine tool. In the modern
6、 machinery manufacturing industry, metal cutting machine tool processing machine parts of the main 河北工程大学毕业设计 2 equipment, it should work, approximately total machine workload of manufacturing from 40% to60%. Machine tool technology directly affect the level of mechanical manufacturing industry prod
7、uct quality and labor productivity. Milling cutter on the workpiece is milling machine. CNC milling machine is in general milling machine is developed on the basis of, two are basically the same processing technology, the structure is also somewhat similar, but the milling machine is programmed by a
8、utomatic processing machine tool, so its structure is very different with ordinary milling machine. CNC milling machine CNC system, generally consists of a main transmission system, feed servo system, cooling and lubrication system of several major components. NC milling machine has stable and relia
9、ble work, convenient operation and maintenance, low operation cost characteristic, has become a modern production of major equipment. X62W milling machine is composed of a common machine tool and development. Compared with other machine tools, it can complete many ordinary machine tool is difficult
10、to be processed or not at all processing of complex surface processing. Using X62W milling machine parts of the processing can improve the accuracy, the stability of product quality. X62W can be compared to the ordinary engine bed23 times improve productivity, complex parts processing, the productiv
11、ity is increased by ten times or even several times. This machine has a flexible, only need to change procedures, can adapt to different varieties and specifications of 河北工程大学毕业设计 3 automatic processing of parts. Greatly reduce the labor intensity of the workers. It sets of mechanical, hydraulic, pn
12、eumatic, servo drive, precision measurement, automatic control, modern control theory, computer control technology in one, is a kind of high efficiency, high precision, and can ensure the processing quality, solve technology problems, but also has flexible production equipment. As the general mechan
13、ical processing equipment, milling machine in the internal combustion engine parts production has played an irreplaceable role. Milling cutter on the workpiece is milling machine. In addition to plane milling machine milling, groove, tooth, thread and spline shaft, but also more complex surface mach
14、ining, higher efficiency than the planer, in the machinery manufacturing and repair sector are widely used. The earliest milling machine is an American Whitney in 1818created a horizontal milling machine for milling twist drill； the spiral groove, American Brown in1862 to create the first universal
15、milling machine, which is a lifting platform milling machine prototype；1884occurred during milling machines in Longmen； in twentieth Century 20appeared in the semi automatic milling machine, working table uses block can be to complete the feed - fast or fast - feeding automatic conversion. After 1950, milling machine control system in the aspects of development quickly, digital control applications greatly enhance the automation degree of the milling machine. Especially after 70 time, microprocessor
