Since the world financial crisis in 2008, the growth of demand in the machine tool industry has been weak, and the market size has generally shrunk. The grinding machine industry is also deeply affected by the financial crisis. The market demand structure has undergone significant changes. Major domestic user industries such as military, automobile, and railway industries have been adjusted and upgraded. Demand for ordinary and low-end machine tools has shrunk dramatically, and large-scale and high-end CNC machine tools have remained stable. Demand, the technical and precision requirements of domestic high-end machine tools are closely related to the accuracy and technical indicators of similar foreign products. Users have put forward higher requirements for domestic machine tool manufacturers for product performance, reliability and service.
At present, international financial risks have not yet been eliminated, and the international and economic situation is not stable. China's economy has generally stabilized and is in a good position, but there are still some unstable factors and risks. At this time, Beijing No.2 Machine Tool Works Co., Ltd. introduced the double-grinding wheel track follow-up point tracking CNC crankshaft grinding machine with the leading technology of similar products in the world by absorbing the advanced technology of similar foreign products and combining the technology accumulation of the company in the cylindrical grinding machine for more than 50 years. The research results are also the research results of the national key project of 863 National Science and Technology Program "High-efficiency precision machining equipment for automobile engine crankshaft" and the major scientific and technological project of "High-end CNC machine tools and basic manufacturing equipment" of the Ministry of Industry and Information Technology in 2009. project.
In this special context, Beijing No.2 Machine Tool Works Co., Ltd. participated in the 6th China CNC Machine Tool Exhibition, using the exhibition platform to exchange the latest technology and products independently researched and developed, in-depth discussion of the trend and direction of the industry development, and a detailed understanding of users. The latest demand of the industry will promote the product structure adjustment and technical level improvement of Beiji. At the same time, it can fully demonstrate the innovation achievements of Beiji in recent years, reflecting the effective measures and implementation adopted by enterprises in response to the financial crisis, accelerating structural adjustment and realizing industrial upgrading. The results reflect the various efforts and actual results made by enterprises in implementing relevant policies, strengthening independent innovation, and transforming development methods.
2010 is a very crucial year for China's machine tool industry to implement the “equipment manufacturing adjustment and revitalization planâ€. It is also the whole industry in accordance with the spirit of the Central Economic Work Conference, accelerating the adjustment of product and industrial structure, strengthening independent innovation, and promoting the transformation of development mode. Actively respond to the critical year of the financial crisis. Participating in the China CNC Machine Tool Exhibition during this period will definitely play an important role in the ability of North Second to improve the response to the financial crisis.
Second, "Spring Yan Award" award-winning product introduction
This year's exhibition CCMT2010, Beijing Second Machine Tool Works Co., Ltd. exhibited products B2-K1018 double grinding wheel frame with moving point tracking CNC crankshaft grinding machine won the "Spring Yan Award". This is an ultra-high-speed precision grinding equipment for precision grinding of spindle diameter and connecting rod diameter of automobile engine crankshaft. The product absorbs the advanced experience and technology of the international similar products, adopts the international advanced technology such as double-wheel wheel frame CNC follow-up synchronous grinding technology and ultra-high-speed grinding technology, which has high processing precision and production efficiency, and the whole machine has high. The "three high" features of rigidity, high efficiency and high reliability enable batch precision machining of the crankshaft connecting rod neck and main journal at one clamping, which is suitable for the use of the crankshaft production line. The technical level of this product has reached the domestic leading level and the international advanced level.
The B2-K1018 machine tool is fixed by a workbench and has a double-wheeled wheel frame and a mobile layout. Adopting the most advanced international following oscillating grinding rod neck technology, the crankshaft is realized by the full-closed control of the numerical control linkage between the two grinding wheel feed axes (X1 and X2 axes) and the workpiece rotary axis (C1 and C2 axes). Simultaneous grinding of two different phase connecting rod necks can also achieve simultaneous grinding of a connecting rod neck and a main journal, or simultaneous grinding of two main journals. The machine tool adopts high-speed (up to 120m/s linear speed) CBN grinding wheel to realize one-time clamping, adapt to adjustment, realize the grinding of the main shaft and connecting rod diameter of the crankshaft, completely solve the shortcomings of the traditional crankshaft grinding machine with poor flexibility and complicated adjustment.
The product has on-line measuring device and error compensation function of the workpiece; it has perfect and reliable functions such as interlocking, safety protection, fault alarm and automatic fault diagnosis; the machine tool meets Chinese national standards in terms of safety, environmental protection and ergonomics. Relevant international standards. It can effectively meet the actual needs of precision machining of crankshafts in engine manufacturing and the urgent need to improve the application level of domestic equipment manufacturing, fill the gaps in domestic technology and products in this technology field, replace imported equipment, and promote the manufacturing industry to reduce manufacturing costs.
This product is the national science and technology achievement of the national "high-end CNC machine tools and basic manufacturing equipment" major scientific and technological projects, the national "863" project "automobile engine crankshaft high-efficiency precision processing equipment", is the first in China.
Main parameters of the machine tool:
Maximum workpiece diameter: φ520mm
Maximum grinding length: 1400mm
Center height: 350mm
Number of CNC axes: 7-axis/4-axis linkage Maximum linear speed of CBN grinding wheel: 120m/s
Roundness: 0.004 mm
Cylindricity: 0.005 mm
Surface roughness: Ra 0.32μm
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Henan Jinming Metal Material Co., Ltd. , https://www.hnjmsteel.com