Third, the development of domestic CNC flat grinding
China began to produce CNC surface grinders in the 1980s. All the development companies have gone through the development of their own, and cooperated with universities and research institutes to develop the direct development of mature CNC systems. For example: Hangzhou Machine Tool Plant is a 50-year-old manufacturer specializing in the production of surface grinders. It has been producing CNC flat grinding since the mid-1980s. It has developed and produced MGK7132 horizontal axis rectangular high-precision flat grinding, MK7130 series ordinary CNC. Flat grinding, MLK7140 numerical control slow-feed molding, MGK7120, MK7163, MK7150 horizontal axis rectangular table CNC flat grinding, MKY7760 vertical axis CNC double-face grinding, MKY7660, MKY7650/101 horizontal axis CNC double-face grinding, and HZ-K1610, HZ- K2010, HZ-050 CNC, HZ-KD2010, HZ-K3015, HZ-K3020, HZ-K4020 and other special CNC gantry plane and guide grinding machines. The development and application of numerical control system has a single-board machine system developed in cooperation with universities and research institutes. It also has a self-developed simple control system based on single-chip microcomputer and a mature CNC system produced by CNC main engine factory.
Its MGK7120 high-precision flat grinding adopts the POWER MATE-D two-axis CNC system of Japan FANUC Company to control the grinding head feed, the minimum feed rate is 0.1μm, and it has the function of automatically completing the grinding cycle.
MKY7650/101 automatic CNC double-face grinding machine is a technical cooperation product with Italy VIOTTO company. It is controlled by Siemens SIMATIC S5-115U programmable controller. CRT shows that the left and right grinding heads of the machine are driven by two-axis DC servo motor. Manual adjustment and automatic grinding cycle selection. Equipped with the Italian Marposs E9 measuring system, two measuring heads, one measuring grinding wheel, feedback the grinding wheel wear amount to the control system for grinding wheel compensation; another measuring head measures the ground workpiece and inputs the measurement result into the control system The servo motor performs the compensation feed; the left and right grinding heads use the VIOTTO grating for position measurement control, which realizes the full-closed and fully automatic machining of the whole machine from workpiece loading to grinding.
HZ-050CNC CNC linear rolling guide special grinding machine is a special grinding machine developed for the third scientific and technological research project of Shanghai Science and Technology Key Production Industrial Project. It has both surface grinding function and profile grinding function. It adopts 8400MP CNC system produced by American AB Company. The machine tool has 7 CNC axes, X, Y, Z three grinding head feed axes and U, V, W three The dressing wheel of the grinding wheel is directly controlled by the system, and the other axis Q is the horizontal feeding of the horizontal grinding wheel (for the grinding plane). The SMC programmable controller is added with the IMC positioning module, and the 8400MP host is input from the system I/O port to control its position. It has automatic processing capability such as continuous dressing grinding wheel or gap type grinding wheel dressing compensation feed during grinding.
HZ-KD2010 six-axis CNC gantry double grinding head surface grinder adopts FANUC-0MC numerical control system, controls the horizontal and vertical feed of two grinding heads with four CNC axes, and controls the grinding wheel of peripheral grinding head with one PMC axis. The dresser has a diamond pen feed, and the other PMC axis controls the indexing rotation of the universal grinder. Make full use of system performance, reduce production costs, and improve the cost performance of the machine tool.
Fourth, the development prospect of CNC grinding machine in Hangzhou Machine Tool Plant
The CNC grinding machine of Hangzhou Machine Tool Plant has developed to the present, and it has already had considerable strength. As the main engine manufacturer, the CNC system of Hangzhou Machine Tool Plant should be developed, and it has gone through the process of completely relying on the system supplier to its initial general development capability. However, the application of CNC system is still improving the performance of mechanical transmission chain, replacing the mechanical hand wheel, and the simple processing cycle. Compared with the advanced level, there are still many gaps in the precision, automation function, processing efficiency, and reliability of the machine tool. There are many problems that need to be improved and broken, which need to be resolved. I think that we should summarize the various structures and products used in the various products currently produced by the factory, analyze their length and gains, and what kind of automatic functions should be achieved in product competition. How to develop a plan to facilitate learning and work Pay attention to the development of numerical control software, conditionally introduce technology or expatriate learning, keep up with the development trend, combine the market needs with hardware, and apply new technologies and new functions one by one in product manufacturing to narrow the gap with the world advanced level. .
With the improvement of the performance and reliability of the CNC system, the price is more reasonable, so that the comparison between the CNC grinding machine and the ordinary grinding machine is accepted by the users, and with the improvement of the requirements of the advanced manufacturing and automation technology in the production, the use of the CNC grinding machine It will also become more and more extensive. CNC flat grinding and other grinding machines will be developed in the direction of processing high-precision high-grade grinding centers and more efficient special-purpose CNC grinding machines. We believe that with the deepening of the computer and information technology revolution, CNC grinding machines will make great progress in terms of their intelligence and system information control. How to keep up with the pace of history, find a development path that suits our own characteristics, and find breakthroughs in technological progress are the focus of our work, because this is a key issue related to the future development and survival of enterprises.
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