Abstract Engine technology is the most critical part of a more efficient and environmentally friendly vehicle. New materials and designs, quality levels, and manufacturing processes are key factors in engine performance, and cost-effectiveness is also important in increasingly competitive competition. I...
Engine technology is the most important part of a more efficient and environmentally friendly vehicle. New materials and designs, quality levels, and manufacturing processes are key factors in engine performance, and cost-effectiveness is also important in increasingly competitive competition. We need to machine the engine block more efficiently, which is an important step for directly reducing the cost and processing time of each part. Cast iron milling
In engine construction, the correct workpiece structure, good surface finish, and parts that are not scratched in the overall quality assurance are absolutely important goals. For cost-effective parts to be produced, to face these increasingly high challenges, reliable and efficient tools and solutions for roughing and finishing are needed, especially for cylinder blocks and cylinder heads. Upper end face.
Roughing is a common part of the process of cutting into cubes in the first stage of casting and at the relevant casting supplier. There, the metal removal rate is the most important. Finishing requires efficiency, reliability and quality. One of the challenging processes is face milling of the combustion surface, which is often the last step in completing the geometry of the cylinder block.
Cast iron is the most important material, and although gray cast iron is dominant, it is used several times more than ductile iron and other types of cast iron, but the cast iron used is still diverse. New developments in materials and production technology have expanded the use of compacted graphite iron (CGI), austenitic malleable cast iron (ADI) and a range of alloy cast iron materials, extending the range of processability options. The combination of a cast iron lining and an aluminum cylinder block results in a requirement for bimetal machining.
Recently, Fenix ​​has introduced some cast iron milling solutions that increase productivity and reliability. The Fenike automotive milling cutter is the leading tool in cast iron milling. Recently, small-cutting cast iron parts and cutting in automotive manufacturing have become more and more popular with machining centers. On production lines or single machines, more than 80% of the tool diameters range from 63 to 160 mm. This reflects the fact that today's cast iron milling is increasingly changing from heavy-duty roughing and finishing on production lines or heavy-duty machining centers to small, light-cutting directions on small machining centers.
Among the new milling tools required for the development of heavy-duty milling applications, targets include table feed, cutting forces, workpiece rupture, burr formation, surface quality and noise levels.
For the characteristics and difficulties of engine block milling, the PCBN super-hard milling cutter developed by Fenike has obvious advantages in terms of online speed, material removal rate and blade life compared with coated carbide and ceramic milling cutter. Compared with imported PCBN tools, the overall cost performance is better under the premise of equal or better surface quality. When the front and rear end faces of the engine block are rough-milled (ap=2.5mm) and fine-milled (ap=0.5mm), the feed speed can reach 3670m/min, and the production cycle can be increased by 30 seconds/piece. Life is increased to 140 pieces / edge. When roughing the top and bottom of the cylinder, the Fenike PCBN milling cutter can increase the processing efficiency by 1.5-2 times and the blade life by 2-3 times. When the top and bottom surfaces of the cylinder are finished, the feed speed of the Fu Nike PCBN milling insert is 1.2 times that of a European PCBN composite sheet, and the overall cost performance is 3 times.
In China, the auto parts processing industry such as engines has a broad growth space, but the competition will become increasingly fierce. How to choose better tools, so that the production efficiency and product quality are improved, and gradually reduce the production cost, which is a common problem for all automobile and component manufacturers. Fu Nike adheres to the CBN industry's more than 20 years of industrial chain advantage, develops innovative CBN tools for engine and other automotive parts processing and proposes innovative solutions to effectively improve production efficiency and profitability, and help Chinese auto and parts manufacturers. Continue to grow.
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