Adjustable speed D-C drives for deep-draw presses

The trend in the automobile industry toward larger and more complex stamped parts for fabricating automobile bodies has necessitated radical changes in the design of stamping presses and their associated drives. The drive problems presented by these more complex machines and operations have led to the development of new drive systems. This paper deals with the application of d-c adjustable-speed drives to deep-drawing presses. Basic drive considerations and description of a typical drive are discussed.