Country, company machine model, name processing range (mm) control system Spain CNC centerless grinding machine cutting grinding length 160 control 3 axis German CNC centerless grinding machine cutting grinding length 120 control 4 axis and 2 auxiliary rib shaft China CNC centerless grinding machine Cutting into grinding length 195 Wuxi Machine Tool Co., Ltd. Control 3 axis CNC centerless grinding machine cutting grinding length 390 China CNC centerless grinding machine control 3 axis Wuxi Guangyang Machine Tool Co., Ltd. Centerless grinding machine Mitsubishi PLC China Wuxi Mingxin Machine Tool Co., Ltd. CNC centerless grinding machine cutting mill Cutting length 190 control 3 axis China guide wheel servo motor Taiwan Daguang Changrong Machinery Co., Ltd. Centerless grinding machine drive stepless speed regulation, manual feed 曰本东洋Advanced Machine Tool Company CNC internal grinder control 2 axis Spain CNC internal grinder control 2 axis China Wuxi Machine Tool Co., Ltd. CNC Internal Grinding Machine Control 2 Axis China Wuxi Mingxin Machine Tool Co., Ltd. CNC Internal and External Compound Grinder Control 4 Axis China Jinan No. 4 Machine Tool Factory CNC Internal and External Compound Grinder Control 2 Axis Sakamoto CNC Vertical Internal and External Grinding Machine Control 2 Axis China Beijing Institute of Mechanical and Electrical Engineering CNC Vertical Internal Curve Grinder Control 3 Axis National inverted vertical grinding center control 2 axis Germany inverted vertical grinding center control 3 axis X2 and 1 auxiliary rib shaft First, the machine tool development tends to multi-functional composite The world's machine tool technology is moving towards a multi-functional machine The direction of composite processing is developing. Composite processing, that is, on the same machine tool, through the process compounding or work type compounding, all the processing of various complicated parts under one clamping breaks through the original machine tool category concept, thus showing various forms of multi-function The processing unit or center; in the case of a grinding machine, an internal and external cylindrical composite grinding machine based on a cylindrical grinding machine plus an internal grinding function or an internal cylindrical grinding machine plus an external grinding function, a car based on a grinding machine plus turning, etc. Grinding center and other composite machine tools. In this exhibition, the German SCHAUDT M哩 and VG110DUO inverted vertical grinding center combine turning and internal grinding and cylindrical grinding functions on the same machine tool, which can be assembled in one part. The entire surface and the end surface are processed to meet the assembly requirements. The machine tool adopts an inverted structure layout with the workpiece spindle on the top and the tool holder on the bottom. The workpiece spindle is used as the travel axis, and the X-direction and Z-direction are moved to realize rapid movement and work feeding, as well as loading and unloading of the workpiece, and the tool holder is fixed. The inner and outer grinding wheels are trimmed with an electric spindle dresser with a disc-shaped diamond roller arranged in parallel with the main workpiece. STRATOSM type has 4 stations: 2 hard turning, 1 internal grinding, 1 external grinding; double-row conveyor with X-direction and Z-direction movement of the workpiece main shaft and horizontal arrangement on one side Yu Cheng. The VG 110DUO type is a two-spindle type, which is divided into two separate working areas; the stone working area is similar to the STRATOSM type, with only one different working position, one hard turning and one inner grinding; the left working area is only set. The small hole grinding station, the workpiece is fed through the hollow workpiece shaft, and the Z-direction movement of the workpiece shaft is performed with a horizontal rotary arm to cut the material; the machine tool also has a C-axis function, and the X-axis linkage realizes a non-circular curved surface. Grinding; and E-axis control tool inclination adjustment for internal and external cone machining. The X-axis of the two machines is driven by a linear servo motor with a fast-moving speed of 60m/nin and an acceleration of 5n/s2. The Z-axis is driven by a rotary servo motor through a ball screw with a fast-moving speed of 30n/nin; The Z-axis resolution is 0L1Mn3. The MK2715 and J4K-095 CNC internal and external circular grinding machines delivered by Wuxi Mingxin Machine Tool Co., Ltd. and Jinan No. 4 Machine Tool Plant are combined with internal and external grinding and end face grinding functions. On the same machine tool; the former realizes simultaneous grinding of the inner hole and the outer cone surface or the inner hole and the end surface by one of the two linear servo axes of the inner circular wheel frame and the outer circular wheel frame; the latter passes through the head frame The Z-axis and the X-axis of the grinding wheel with the inner grinding wheel and the outer grinding wheel arranged side by side, sequentially grinding the inner and outer surfaces and the end surface. TA本TAIYOKOKI's IGV-5NA vertical grinding machine only achieves sequential grinding of inner and outer circular surfaces, end faces, and flanges with flanges such as flanges through the X and Z axes of the grinding frame. Reverse end face. The advantages shown by the composite processing technology are that it can not only improve the production efficiency, improve the mutual positional accuracy of the various processing surfaces of the parts, but also reduce the production area occupied by the machine tool and reduce the comprehensive cost of the investor. In short, according to the complexity of the parts and the development of the batch processing, the multi-functional machine tools with various functions combined in different forms are one of the most dynamic development directions of the machine tool manufacturing technology.
Second, continue to develop in an efficient, high-precision direction to achieve high efficiency, high precision, is always the eternal theme of machine tool technology, especially the development of grinding machine technology. The grinder exhibits related to this exhibition have their own attention in this respect. In addition to the use of the highlighted composite processing technology, the cutting-edge grinding technology, which is one of the efficient processing methods, has been put to considerable use in the centerless grinding machine. KK-200CNC type of Wuxi Machine Tool Co., Ltd., KC-200CNC type of Wuxi Guangyang Machine Tool Co., Ltd., and KRONOSS type centerless grinding machine of SCHAUDTM IKROSABWF of Germany can cut into the shape-cutting grinding of cylindrical parts with multiple molding surfaces at one time. KC-200CNC type plunge-cut grinding The machining precision of the automotive air-conditioning main shaft with 8 forming faces is as follows: diameter difference ± 2mm; roundness 0.6mnjKRCNCS S-type cut-in forming V4x43nm, production of oil needles with 11 forming faces The beat is i2s. The common feature of these machines is that the wheel dressing adopts two-coordinate linkage interpolation technology, while the KC-200 and KRONOSS type dressing tools use the dish-shaped diamond wheel.
It is worth paying special attention to the S-type centerless grinding machine with unique structure and layout. The grinding wheel frame and the guide wheel frame adopt the cross ram structure, the guide rail is the circulating roller linear guide rail; the electric spindle dresser of the grinding wheel and the single point diamond of the guide wheel The dresser is fixed at the front of the center pallet of the grinding zone and the workpiece height avoids the superposition error caused by the inconsistency of the trimming and grinding motion trajectory, which improves the trimming precision and the grinding precision, and simplifies the structural configuration of the machine tool. . According to reports, the Swiss TSCHUDIN GL 600CNC type centerless grinder sand and guide wheel dresser arrangement adopts a similar principle; the grinding wheel frame and the guide wheel frame are used for the cutting motion (U, X axis), and the pallet frame is used for longitudinal movement (W axis). ), through the UW and XW axis two-two linkage 芫 sand, guide BWF company's grinding center uses linear servo motor to drive the X-axis, fast-moving speed of 60m / nin, acceleration up to 5m / s2; Z-axis by rotary servo The motor is driven, the rapid traverse speed is up to 30n/nin; the resolution is a1Mmr inner and outer grinding wheel and its dresser, and the KRONOSS type centerless grinding wheel dresser adopts electric spindle; the grinding wheel used is CBN material. The internal and external grinding line speed is 60n/s, the centerless grinding line speed is 120n/s; the electric spindle trimming speed is 10,000 rpm, and the STRATOSM type grinding center even reaches 160001. Through various technical measures, machine tool manufacturers have realized high-speed movement, high-precision feeding, high-speed grinding, high-speed dressing, and pursuing the efforts and high level of machine tool work.
(Continued on page 25) 4. Strengthen the theoretical research of bearing foundation and improve the development ability of China's bearing products. China's bearings have been at a low level. For high-value-added special bearings, domestically used foreign products are generally used, and the basic theory of bearing is lacking. Research, so the quality of domestic bearings is far less than the quality of foreign similar products in order to change this situation, companies must increase the investment in bearing basic theoretical research, improve the level of China's bearing technology, develop the performance analysis of bearing products with independent intellectual property rights and design software.
The most important production factor of the knowledge economy is that knowledge (mainly science and technology knowledge) as a strategic resource of the new era will play a role in expanding the role of social wealth at a faster rate. Due to the exponential growth of knowledge, people need to constantly enrich their knowledge to meet social development. Learning has penetrated the whole field and the whole process of people's life. Therefore, bearing manufacturers must strengthen technical training and re-education for employees to make employees from traditional bearings. The labor-intensive manufacturing industry has turned to knowledge-intensive high- and new-tech bearing industries.
(Finish)
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