This year, the “Combined camshaft fully automatic press installation workstation” of high-tech enterprise Ningbo Cobi Ruite Intelligent Technology Co., Ltd. was officially recognized as the first (set) equipment in Zhejiang Province. Recently, “Corby Ruite” has delivered a fully automated production line to SKF, the world’s largest bearing production enterprise, and completed multiple high-quality intelligent manufacturing production lines such as logistics equipment sample lines. On average, it can receive more than 10 orders per month, with an expected output value of around 200 million yuan this year. The winning magic weapon of “Corby Ruite” is the combination camshaft.
There is a key component in the engines of automobiles, engineering vehicles, and ships – the camshaft. The camshaft plays a role in controlling the intake and exhaust of the cylinder throughout the entire engine, and is also closely related to the efficiency and lifespan of the engine. The structural design and machining quality of the camshaft directly affect the performance of the entire engine.
Traditional camshafts are formed by casting molds, resulting in heavy products and high pollution during the processing. Having been constantly exploring and rolling in the intelligent equipment industry, “Corby Ruite” keenly focuses on a new technology – combination camshaft. The design and production process of camshafts with high quality, high efficiency, low cost, and low energy consumption are the main ways to improve product competitiveness. While ensuring the performance requirements of camshafts, it is necessary to simplify their processing technology as much as possible, reduce weight, and improve material utilization. Therefore, changing processing technology has become an inevitable trend of development. We are determined to develop modular camshaft automatic press fitting workstations Introduction by Vice General Manager Yan Yongwen.
A combination camshaft, in simple terms, is a manufacturing process that subverts tradition by placing various cam blades on a hollow iron rod jacket. At present, some domestic enterprises have started to produce composite camshafts for passenger cars, but there is almost no market for larger commercial and marine composite camshafts in the market. Corby Ruite aimed at this market demand, but encountered many difficulties from the beginning of its research and development. One of them was to use the “knurling” process to process a circle of densely arranged splines for fixing cam blades and other parts. The knurling accuracy of the steel pipe should reach one tenth of the hairline, and the cam plate after pressing should be able to withstand a torque of 360-400 Nm, including its durability, which should also meet the needs of long-term engine operation, “said Yan Yongwen.
In order to overcome technical difficulties, “Corby Ruite” collaborated with the Tsinghua Alumni Association, the Advanced Technology Research Team of the Chinese Academy of Sciences, and after five years of hard work, finally developed the “Combined camshaft fully automatic press installation workstation” in 2019. It has applied for more than ten patents, including three invention patents. This year, the product was officially recognized as the first (set) equipment in Zhejiang Province. This equipment adopts a green and pollution-free production process, which can reduce energy consumption and labor costs by 80% compared to traditional cast camshafts. Moreover, the production of.The product has a larger diameter, longer length, and higher accuracy. The successful operation of this workstation has enabled us to conquer for the first time the production technology of fully automatic vertical pressing equipment for ultra long and ultra thick camshaft products
Taking digital technology innovation as the key driving force, we are committed to providing overall solutions for digital factories for traditional manufacturing enterprises, which is the goal of “Corby Ruite”. We will work hard on some equipment that has been blocked by developed countries and break the technological monopoly of Western developed countries. We have developed nearly ten advanced manufacturing equipment and are now focusing on developing more and more advanced equipment to meet customer needs, “said Pei Dongliang, General Manager of Corby Ruite with great confidence.