Abstract: A device is provided for the automatic processing of differently shaped workpieces having a controlled tool-changing capability which permits a quick change of the set of tools in the device. This enables optimum adjustment of the tools to be made economically outside the production line. It also enables several different moveable and interchangeable tool frames to be located and moved on a lower frame into a variety of configurations. One tool frame is used at a time and when it is required to switch, several simple steps enable one tool frame to be moved to one side of the lower frame and a second tool frame to be moved into the operating position.

Abstract: An improved device for processing workpieces is provided having a lower tool which receives a workpiece and which can be moved against an upper tool where the workpiece can be processed. It also has a lifting frame with a lifting table and a separate tool frame which can be mounted on the lifting frame in an easily releasable manner. The present device uses a modular construction to enable the tool frames to be easily interchanged. The tool frame consists of a head plate upon which is mounted the upper tool, a base plate upon which is mounted the lower tool and a plurality of columns there-between. The base plate is detachably connected to the tool frame. When a tool frame is to be moved onto the lifting frame, the base plate must be attached to the tool frame. Then the tool frame can be placed onto the columns of the lifting frame.

Abstract: A cam of a camshaft has its surface hardened by rotating the camshaft about its axis while maintaining a TIG torch at a fixed spacing from the surface, and while relatively axially reciprocating the torch and the camshaft so the torch heats the surface along an undulating path. The pitch or crest-to-crest spacing of this path is maintained constant for uniform hardening either by varying the angular rotation rate of the camshaft or by varying the axial reciprocation frequency between the camshaft and torch. The radial spacing of the portion of the surface being heated at a given instant from the axis is measured to control the rotation or reciprocation rate.