Technology and Equipment of Shenyang No.1 Machine Tool Plant

In order to meet the needs of CNC industrialization projects, the factory has made major adjustments in the process structure and production organization system, completely breaking the original closed production organization pattern of "big and complete, small and complete". According to the technical transformation plan of specialization and collectivization, the original three professional workshops of casting, plate welding and gear were separated and reorganized, and three specialized business divisions with independent management autonomy were established. Thus, a new system with market competition mechanism centered on the production plan of the main engine factory was established, which made the manufacturing conditions and specialized production capacity of the factory change qualitatively. At present, the comprehensive equipment strength of the factory in processing, testing, assembly and packaging ranks first in the domestic lathe industry. The factory not only has strong product development and research strength, but also has first-class advanced processing technology in China. In the early 1990s, the factory established a modern new factory on the basis of the old factory, and introduced the most advanced processing equipment in the world to equip the factory, thus improving the machining accuracy of machine tool parts, and at the same time improving the overall accuracy level of machine tools, making the product structure and product quality of the factory achieve a qualitative leap.

The gear of the main transmission system of machine tool is machined by hardening grinding technology, and the gear after heat treatment is ground by Magger grinding machine made in Switzerland, which can ensure the high transmission accuracy and low noise of the main transmission system of machine tool.

The machining of special-shaped parts such as machine tool supports is completed by vertical boring and milling machines of Haas in the United States and Niigata in Japan. The original universal machining method is changed into special line machining method, which improves the machining quality and accuracy of the workpiece and improves the machining efficiency.

Machine tool spindles are all machined by lathe machining center, German caston cylindrical grinder and Guillaume internal grinder, and the roundness of spindle cone hole is.

Machine tool box parts are all processed by German Vino horizontal machining center and precision coordinate boring machine. The accuracy of hole spacing can reach 0.0 15/500mm, and the boring is roundness.

Machine tools for machining lathe beds, saddles, tailstock, etc. are MAZAK Boring and Milling Center in Japan (see right), Pentahedral Machining Center in Japan, and Mycoff Single Column Vertical and Horizontal Conversion Machining Center in Italy (see left), thus ensuring the consistency of precision and size when machining large pieces in batches.

The lathe bed guide rail is quenched by Spanish Irene CNC guide rail quenching machine. The main technical advantages of this equipment are constant quenching gap and uniform surface hardness. After quenching, the surface hardness of the guide rail can reach HRC52-59. After quenching, the internal stress of the guide rail material is small and the quality is stable.

After quenching, the surface of the guide rail is ground by Vadrisch CNC lathe bed guide rail grinder in Germany. The convex curve of the guide rail of the machining machine tool is realized by the NC system program of the machine tool, and the straightness of the guide rail can reach 0.0011000 mm, which creates a prerequisite for greatly improving the movement speed and related technical parameters of the machine tool.

In addition to sealing the machine tool to prevent the leakage of coolant and lubricating oil, it is more important to protect the operator. Our factory introduced the laser cutting machine and numerical control bending machine produced by MAZAK in Japan into the processing equipment of sheet metal parts, which greatly improved the processing quality of machine tool protection, ensured the one-time coating of machine tools to ensure the product quality, and came from advanced detection and measurement means. Our factory is the first batch of national first-class metrological physical and chemical units recognized by the State Bureau of Quality and Technical Supervision, and adopts world-class testing instruments to fully control the cold and hot processing, assembly and debugging of factory products. The introduction of CMM (see the right), dual-frequency laser interferometer, roundness tester, roughness profile tester, direct reading spectrometer, infrared carbon and sulfur tester, large metallographic microscope, electronic tensile tester and taper tester endows the product with quality. The product quality of machine tools has been fundamentally guaranteed. 1996 factory successfully passed the ISO900 1 international quality system certification at one time, and 1999 successfully passed the quality certification re-evaluation, making full preparations for the products to enter the international market.

Name and Model of Precision Measuring Instrument Manufacturer National Minimum Unit of Measurement Coordinate Measuring Instrument 145 1 MAZER Germany 0. 1μm Roundness Measuring Instrument TALY3 TALY UK 0.0 1μm Dual Frequency Laser Interferometer ML 10 RENIS. HAW UK 0.0 1μm surface roughness measuring instrument S4C TALY UK 0.000 1μm factory has a constant temperature purification workshop of nearly 30,000 square meters, and all kinds of parts processing equipment are at the first-class level in China. Using the loan from the World Bank, improving the technological means and introducing advanced equipment, the manufacturing capacity of the factory is at the leading level in the same industry in China. In recent years, on the basis of the original high starting point, the factory is also equipped with a number of processing equipment produced by world-renowned manufacturers, which further improves the processing accuracy of machine tool parts in the factory.

The assembly and debugging of CNC machine tools is an important technical link that affects the performance and quality of machine tools. The assembly, electrical installation, final assembly and debugging of all CNC machine tools in the factory are carried out in purification workshop with constant temperature and dust-free, and the products run continuously for 72 hours before leaving the factory, so that the quality of the machine tools is fully guaranteed.