China's first follow-up CNC crankshaft grinding machine was put into operation in September
March 28 14:09:26, 2023
Double-wheeled wheel frame follow-up (cut-point tracking) CNC crankshaft grinding machine, a special machine tool that sounds very strange to many people, but it is a high-tech equipment that is coveted by domestic automobile engine manufacturers. The crankshaft is one of the core components in the automobile engine. It has been mainly imported for many years, and the price of a grinding machine is not less than 10 million yuan. This technical problem that has been used in China's equipment manufacturing industry for many years has been overcome by the "two machine tools" of one of Beijing's old industrial brands. The “Second Machine Tool†was founded in 1953. Today, Jingcheng Electromechanical Holding Co., Ltd. has integrated the machine tool business segment and established Beijing Beiyi Machine Tool Co., Ltd., which belongs to Beijing No. 2 Machine Tool Co., Ltd. as one of the advanced manufacturing enterprises of foreign round grinding machines, super finishing machines and special machine tools. The domestic market share of CNC grinding machines tops the list, and the market share of high-precision cylindrical grinding machines reaches over 70%. This year, the "Automobile Engine Crankshaft Efficient Precision Machining Equipment" project, including the double-wheeled wheel frame follow-up CNC crankshaft grinding machine technology, passed the acceptance of the "863 Program" expert group of the Ministry of Science and Technology in April. In September, the company's first self-developed and manufactured double-spindle frame follow-up CNC crankshaft grinder will be delivered to an engine manufacturing enterprise in Zhejiang, equipped on the crankshaft processing line. At 10 o'clock in the morning, in the "two machine tool" factory near Fengtai Lugou Bridge, the sound of the "grinding and smashing" of the grinding wheel grinding metal parts came one after another. The reporter saw that a crankshaft grinding machine code-named "B2-K1018" was "competitive" with a crankshaft original shaped like a "bow". "B2-K1018" is definitely the top product in the factory. It has a strong identity - the first double-wheeled wheel-mounted CNC crankshaft grinder in China. The follow-up CNC crankshaft grinder technology was formally developed and put into production five years ago. When foreign manufacturers come to China to participate in the exhibition, it is still "old", and it does not give Chinese counterparts an opportunity to observe new technologies on site. Through the introduction of the foreign party no more than one minute, Wang Bo, the general manager of "Two Machine Tools", still firmly remembers the advantages of this new technology: the follow-up tracking grinding technology can make the cylinder spheroid of the crankshaft not more than 4 microns, ie The height of the "bump" on the toroidal axis is less than one tenth of the diameter of a hairline; a four-cylinder crankshaft takes only three and a half minutes to go through the assembly line, and all the machining processes only need two A worker operates and saves labor costs by nearly 80%. "The rotation of the crankshaft is the power source of the engine. If the roundness and surface roughness of the crankshaft journal are poor, the engine of the car will be unbalanced, and the vibration will be loud and loud during driving." Wang Bo explained that follow-up CNC Grinding technology can more flexibly meet the characteristics of multi-variety and multi-batch of domestic crankshaft machining, and the accuracy and index are higher than traditional processing methods. Up to now, the project of “Efficient Precision Machining Equipment for Automobile Engine Crankshaft†has been awarded 3 national invention patents and 1 utility model patent, including domestic famous car companies and crankshafts including Chery, Great Wall, FAW Xiali and Tianrun Crankshaft. Professional manufacturers will become their new users.