Abstract: A drilling device for workpieces of different sizes is disclosed herein. The drilling device includes a tool carrier supported by a carriage for reciprocable movement thereon along a path and the carriage is also reciprocable along the path. The carriage is biased to a predetermined starting position. When a tool on the tool carrier engages the workpiece, the carriage is moved in the opposite direction and engages a switch to reduce the feed speed of the tool carrier for a short period of time during which the carriage engages a stop to define a fixed drilling position. Upon completion of the drilling operation, a biasing spring moves the carriage in the drilling direction beyond the starting position to actuate a switch and return the tool carrier to a starting position while the carriage is also returned to the starting position.

Abstract: A stamping device with vertically guided frame, which carries the matrix and vertically guides the stamping punch. When the vertically movable stamping punch hits the workpiece to be punched, the frame of the stamping device is lifted until the matrix engages the bottom side of the workpiece, whereupon in response to a further downward movement of the punch, the punching operation is carried out. The frame has associated therewith a balancing weight which is adjustable on the longer arm of a two-arm lever between two side plates of the frame, whereas the shorter arm of the two-arm lever supports the frame. The free end portion of the longer lever arm is connected to the frame by compensating and cushioning spring means.