In the last few decades the application of cold forging technology has steadily increased, especially in the automotive industries. This is a result of the clear savings in material and energy as compared to warm and hot forging and machining. With the increasing application of cold forging to complex parts comes a need for an increased tooling complexity and a better control and understanding of material flow and tool loading. This paper deals with the forward extrusion and with the combined backward/radial extrusion of gear shafts with both straight and helical gears. Having the correct process parameters, it is possible to cold extrude these parts, the resulting quality of which is presented. The various tool designs, including the use of a guided, helical geared punch are discussed. The influence of the lubrication on parameters such as punch and ejector forces is also presented.
Cold extrusion of straight and helical gear shafts
Kaltextrusion von geraden und gewundenen Getriebewellen
Production Engineering, München ; 3 , 2 ; 29-32
1996
4 Seiten, 11 Bilder, 1 Tabelle, 7 Quellen
Article (Journal)
English
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