Abstract: In a process for the registration of the state of wear of a tool used in gear manufacture, where the tool has at least one abrasive tooth tip for machining a workpiece in a machining process, a cutting distance per tooth tip of the tool is determined, and this cutting distance, weighted with a wear intensity factor, compared with a specified life path constant. This life path constant indicates the maximum acceptable state of wear of the tool for the machining of the workpiece. By way of this process the wear behaviour can be registered, and a total and residual piece potential determined.

Abstract: An arrangement is used for the efficient mass production of individual bodies for the artificial rebuilding of teeth, for example. The arrangement comprises a first pair of co-rotating elements, of which the first element (1) is so arranged as to support a replica (21) of a body which is to be produced, and the second element (2) is so arranged as to support a blank from which the body is to be produced. The replica and the blank are caused to rotate synchronously about the axis of rotation (3, 4) of the respective element. In a second pair of elements a third element supports a sensing device (31) which is capable of interacting with the external contour of the replica, and a fourth element supports a tool (52) by means of which the blank is capable of being machined. The first and second pairs of elements are capable of being displaced relative to one another.

Abstract: A flash removing method whereby flash is cut off by a reamer which is freely movable while being in contact with polymeric molded products within a predetermined range of pressing force. The reamer is provided with blades having normal clearance angles of substantially zero degree and the flanks of the blades follow the flash-forming region. The reamer is controlled in radial position according to the shape of the polymeric molded product, so that the reamer always receives a constant radial load from the product to leave even traces after the flash removal. A solidified gate is cut off before the flash removal. A flash removing apparatus for performing the method.

Abstract: An automated control system and method for control of hydraulically positionable machine tools is disclosed. A servo motor is coupled to a servo valve spool such that the angular displacement of the motor shaft directly corresponds to the resultant rotation of the spool, which in turn threadably engages a precision lead screw fixed to a tool slide. In the preferred embodiment, a position encoder provides signals indicative of the angular displacement of the motor shaft. The position encoder signals are fed back to an electronic central processor which controls motor operation. The controller is programmed with the lead screw pitch information, and a series of instructions to advance or reverse the spool along the lead screw in a series of movements precisely corresponding to the desired movements of the slide.