Today, cold forging alone is no longer the deciding factor. The combination with other forming methods in the field of hot and semi-hot forging, and also with metal cutting and jointing methods leads to the best quality product using the least expensive process. The main areas of implementation in vehicle construction for parts formed with cold forging are the major components - engines, transmissions and axles. Cold forged parts in the engine are the balancer shaft, the valve spring retainer and the bucket tappet (for hydraulic valve-play compensation), the piston pin in a wide range of designs, the assembled camshaft with cold-extruded cams on welded or seamless drawn tube. Cold-forged gears, shafts, flanges and pistons are components of manual or automatic transmissions. Axles contain cold-forged parts mainly in the side shafts with the adjacent joints and the gears of the rear axle transmission. Simulation is the decisive factor in being able to reliably accompany the change to the near net shape, top-quality component with a higher-precision profile using sophisticated technologies. All of the methods and combinations of cold forging methods that allow for near net shape forming belong to the key technologies of the future.
Trends and development of cold forging in the automotive industry
Perspektiven und Entwicklung der Kaltmassivumformung im Fahrzeugbau
2000
11 Seiten, 10 Bilder
Conference paper
English
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