Patents by Inventor Werner Ullmann

Werner Ullmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4739676
    Abstract: A transmission is provided for a machine that manufactures a workpiece, later to serve as an electrode, by means of a form grinding tool. The tool has a similar spatial shape to that of the workpiece. The drive generates between the tool and the workpiece an orbital motion with changeable eccentricity and which orbital motion is necessary for a grinding or abrading process. A device, which can be structured as a transmission, an electrical control circuit, or as displaceable idling rollers, alters the eccentricity and is in constant operative connection with the driving side and power take-off side of the transmission. In this way there is obtained a constant setting or a cyclical adjustment of the eccentricity throughout the orbital movement. Furthermore, the orbital movement can describe non-circular patterns so that Lissajou patterns can be generated.
    Type: Grant
    Filed: May 28, 1985
    Date of Patent: April 26, 1988
    Assignee: Werner Ullmann
    Inventors: Werner Ullmann, Andre Mathys
  • Patent number: 4557075
    Abstract: An apparatus for shaping a three-dimensional workpiece by inducing the following relative motions between an abrading die member and the workpiece: a feed motion, periodical retract and advance motions in a z-direction, and a planetary or orbital motion in the x and y directions. The mechanism which generates the planetary or orbital motion is provided with means for infinitely adjusting the eccentricity of this motion and is provided with means for selectively and releasably fixing the chosen amount of eccentricity. An assembly is provided to adapt the following process values to conditions within a gap between the die and the workpiece such that the abrading process is optimized: (i) feed pressure between the die and the workpiece during an abrading period of a work cycle; (ii) speed of the feed motion; and (iii) speeds of periodical retract and advance motions.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: December 10, 1985
    Assignee: Werner Ullmann
    Inventors: Werner Ullmann, Max Bantle, Harry Neumann, Ulrich H. Seuser, Andre Mathys
  • Patent number: 4264826
    Abstract: An apparatus for generating thermal and electrical energy includes an internal combustion engine connected to and adapted to drive a generator for providing electrical power and a brake for generating thermal energy. In one embodiment, a heat carrier flows through appropriate conduits for absorbing heat energy from the brake, from the combustion chamber of the engine, and from the engine exhaust gases and delivers the heat energy to a end-use heat exchanger, for example, a room or space heater. In a second embodiment, the engine exhaust gas flow is used to drive a gas turbine that, in turn, drives a compressor in a thermal cycle to provide additional heat transfer capability.
    Type: Grant
    Filed: August 29, 1978
    Date of Patent: April 28, 1981
    Assignee: Elmapa NV
    Inventor: Werner Ullmann
  • Patent number: 4242556
    Abstract: To provide constant tension on an electro-erosive electrode machining wire, tape or ribbon stretched in a working path between advancing rollers and pulling rollers, a tension loading arrangement, for example weights, springs, or the like, are applied to the wire to maintain the tension thereof at a constant value. The deflection of the wire, due to elongation thereof as a result of heating, differences in manufacturing technologies and the like, is sensed and fed back to the motors driving the advancing and pulling rotors to maintain the tension, as controlled by the motor torques and speeds at a uniform value.
    Type: Grant
    Filed: April 13, 1978
    Date of Patent: December 30, 1980
    Assignee: A.G. fur Industrielle Elektronik AGIE
    Inventors: Werner Ullmann, Bernd Schumacher, Herbert Ruh, Beat Kilcher
  • Patent number: 4237370
    Abstract: A pulse generator for metal machining by electric discharges, comprising a primary current circuit for producing and transmitting pulse forms to a pair of electrodes. A voltage and/or current source is arranged in the low-ohm and low-loss primary current circuit, the voltage of which has a value which is only that much greater than the operating voltage of the pulses flowing through the spark gap as is needed to positively overcome the voltage losses occurring in the primary current circuit. A signal generator produces a signal corresponding to the desired current pulse shape or form. A comparator, which has a switch arranged in the primary current circuit for regulating the current flow in such primary current circuit, controls the current flowing through the primary current circuit, as a function of the desired pulse form produced by the signal generator and a magnitude of the current flowing in the primary current circuit which is tapped-off by a measuring feeler.
    Type: Grant
    Filed: June 2, 1978
    Date of Patent: December 2, 1980
    Assignee: Elmapa N.V.
    Inventor: Werner Ullmann
  • Patent number: 4205212
    Abstract: A head assembly for an electro-erosion machine tool comprises, in a housing, a guide for guiding the moving filamentary or strip-form tool electrode and first contact means for supplying erosion energy to the electrode. The scavenging medium is fed into the housing so as to cool the contact means and guide, and leaves it by way of a nozzle through which also the electrode leaves the housing on its way to another head assembly arranged on the opposite side of the location where machining is performed, the scaverging medium being thereby fed to the machining location as an envelope coaxial to the electrode. Second contact means for contacting the workpiece to be machined are fixed to the nozzle and the connections to each contact means are arranged for low inductive energy loss.
    Type: Grant
    Filed: April 26, 1977
    Date of Patent: May 27, 1980
    Assignee: A.G. fur industrielle Elektronik AGIE Losone b. Locarno
    Inventors: Werner Ullmann, Ernst Buhler, Beat Kilcher, Herbert Ruh, Arno Sieg
  • Patent number: 4104502
    Abstract: In a spark erosion machine in which the tool electrode comprises a tensioned flexible wire or tape, machining induced force due, for example, to the magnetic and electric fields induced by the sparks, act on the tool electrode and may cause it to vibrate. To reduce the tendency for such vibration, a compensating signal is passed through the tool electrode or applied between the tool electrode and workpiece so as to produce a magnetic or electric field which compensates for the machining induced forces. The compensating signal is preferably adjustable in magnitude and/or frequency (the latter assuming it is an alternating signal) and the output of the generator which produces it is decoupled from the output of the spark pulse generator. The spark pulse generator and the compensating signal generator may be interdependently synchronized by a synchronizing signal lead connected between them.
    Type: Grant
    Filed: July 26, 1976
    Date of Patent: August 1, 1978
    Assignee: A.G. fur industrielle Elektronik AGIE
    Inventors: Werner Ullmann, Rudolf Panschow
  • Patent number: 4096394
    Abstract: A main and an auxiliary energy supply device supply energy to a load normally and during disturbances of the main supply respectively while, for bridging brief disturbances in the load supply, for example naturally brief disturbances or during the short time when a disturbance has begun and the auxiliary supply has not yet come into operation, there is provided an energy store which can receive and store energy from the main supply and make this stored energy quickly available to the load. A control logic system controls the main and auxiliary supply devices and the storage means to ensure substantially constant energy supply to the load. The disturbances in question may comprise voltage rises or reductions and/or waveform distortions for example.
    Type: Grant
    Filed: January 21, 1976
    Date of Patent: June 20, 1978
    Assignee: A.G. fur industrielle Elektronic AGIE
    Inventors: Werner Ullmann, Renato Derighetti
  • Patent number: 4095079
    Abstract: An assembly such as a tool head for a spark erosion profiling machine tool comprises an elongate tool holding member having first and second opposed lengthwise bearing surfaces and third and fourth opposed lengthwise bearing surfaces. By way of example the member can be square, the bearing surfaces then being the four long sides of the member. The member is partly housed in a housing wherein there are mounted bearings which support the member for movement in the direction of its length with respect to the housing. The bearings can comprise discrete circulating roller bearing shoes and they are in abutting contact with the member at five positions in the region of each of two planes spaced apart along the length of the member by a calculated optimum distance.
    Type: Grant
    Filed: December 13, 1976
    Date of Patent: June 13, 1978
    Assignee: A.G. fur industrielle Elektronik AGIE Losone b. Locarno
    Inventors: Werner Ullmann, Paul Fricker, Maurice Guenin
  • Patent number: 4072842
    Abstract: A pulse generator for use in forming the erosion pulses of an electro-erosion machine tool comprises means for forming two envelope curve signals representing upper and lower limit levels for the instant level of the output pulse, a comparing device for comparing the actual current level of the output pulse with the envelope curve signals, and a current supply for forming the pulse under the control of a switch which is turned on and off by the comparing means in such a way as to maintain the output pulse current level in the region represented by the space between the envelope curves.
    Type: Grant
    Filed: June 10, 1976
    Date of Patent: February 7, 1978
    Assignee: A.G. fur industrielle Elektronik
    Inventors: Werner Ullmann, Ernst Buhler
  • Patent number: 4045641
    Abstract: A control system, for a machine tool of the kind in which electrical energy passes across a gap between a tool electrode and a workpiece to erode the workpiece, comprises means for forming signals representative of the rate of erosion of the workpiece and the rate of undesirable erosion or "wear" of the tool electrode, and a computer means which receives the signals and combines them with a signal received from a data input device, which signal represents a desired optimum relationship between the two rates of erosion, and forms an appropriate output signal for controlling the machine tool. The data input device is usable, in rough machining operations where the tool electrode may be relatively cheaper than machine time, to ensure that machining is done in the shortest time by allowing a relatively high rate of tool wear and, in fine machining where the tool electrode is expensive, to ensure minimal tool wear at the cost of machine time.
    Type: Grant
    Filed: December 16, 1975
    Date of Patent: August 30, 1977
    Assignee: A.G. fur industrielle Elektronik AGIE Losone b. Locarno
    Inventors: Werner Ullmann, Bernardo Ferroni, Gideon N. Levy
  • Patent number: 4029928
    Abstract: In order to machine a multidimensionally curved surface on a workpiece using an electro-erosion, i.e. spark erosion or electro-chemical erosion, machine tool, the machine tool is provided with a tool electrode which has an effective machining face inclined to the direction in which the advance feed drive of the machine tool advances the tool electrode towards the workpiece. By using transverse feeding mechanisms for the tool electrode or the workpiece acting under the control of a computer, or by using a cam and guide arrangement coupled to the tool electrode, the tool electrode and workpiece are so relatively moved that the effective machining face of the electrode always moves in the direction of the momentary largest radius curvature of the curve to be machined. When a cam and guide arrangement is used, the tool electrode can be coupled to the advance feed drive by way of a coupling device which incorporates a universal joint, or a domed surface sliding joint.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: June 14, 1977
    Assignee: A.G. fur industrielle Elektronik AGIE Losone b. Locarno
    Inventors: Werner Ullmann, Ferdy E. Hermann
  • Patent number: 3987270
    Abstract: Electroerosion machining (EDM or ECM) is carried out with a minimum of manual intervention. Under control of recorded data an electronic control system utilizing control logic directs the set-up operations as well as the actual machining process. The operations automatically (i.e., without the necessity of manual intervention) include loading and removal of workpieces and electrode material, trueing up of the workpiece (which may be by providing a transformation of the data rather than by adjusting the position of the workpiece), making starting bores, threading the electrode through a starting bore, applying a low melting alloy or other conducting adhesive to cement a core in the process of being cut out by machining, cutting the electrode after completing a starting bore and joining electrode ends after rethreading in a new starting bore. In threading the electrode it may be pushed simply or with the support of a surrounding jet of pressure medium, or it may be pulled by a grapple member.
    Type: Grant
    Filed: September 19, 1974
    Date of Patent: October 19, 1976
    Assignee: A.G. fur Industrielle Elektronik AGIE Losone b. Locarno
    Inventors: Werner Ullmann, Bernd Schumacher, Arno Sieg, Silvano Mattei, Hans-Ueli Fenner, Gottlieb Wettstein, Herbert Ruh
  • Patent number: 3975608
    Abstract: A workpiece-supporting table of an electro erosion machining equipment is provided with a mechanism for subjecting the workpiece to a circling motion of continuously variable radius during operation from zero to a maximum value. The same tool electrode can be used, without withdrawal from the work, for coarse machining at first and fine machining under circling movement immediately thereafter.
    Type: Grant
    Filed: April 12, 1974
    Date of Patent: August 17, 1976
    Assignee: A.G. fur industrielle Elektronik AGIE Losone b. Locarno
    Inventors: Werner Ullmann, Bernd Schumacher, Robert Farinelli, Arnold Zimmerman, Paul Fricker, Michel Durin
  • Patent number: 3975607
    Abstract: Two condition index variables are used for controlling operation in such a manner that one of the variables is kept as close as possible to a minimum value, while the other is held within an assigned range. Both condition index variables depend on the rate of flow of the flushing liquid through the working gap, on the interval between discharges in the gap or on the duty cycle or repetition frequency and amplitude of the discharge pulses. The condition index variable held to a minimum may be the integral of the square of the error signal from the regulating circuit of the electrode advancing drive, the integral of the square of the acceleration of electrode movement or the quotient obtained by dividing the square of the error signal by the square of the gap current. The regulating value to be held within an assigned range is a calculated breakdown potential defined by the relation of the variation of the error signal to the variation of the electrode spacing.
    Type: Grant
    Filed: November 27, 1974
    Date of Patent: August 17, 1976
    Assignee: A.G. fur industrielle Elektronik AGIE Losone b. Locarno
    Inventors: Werner Ullmann, Bernardo Ferroni, Renato Derighetti, Bernd Schumacher, Silvano Mattei, Costantino Tadini
  • Patent number: 3973104
    Abstract: The peak voltage of each discharge pulse is measured and, if the voltage of the pulse exceeds a high threshold value, there is also measured the time between the passing of that value and the moment the pulse voltage thereafter drops below a second lower threshold value. The two measurements are expressed in pulses that are combined, preferably by addition, to provide a regulating value, whose deviation ("error") from a standard value is predicted for a coming period, taking account of recent electrode position change as well as regulating value trend. The sign of the predicted error determines in which direction the electrode drive motor will be energized, but if the predicted error is less than a threshold value no motor energization occurs until the next error prediction.
    Type: Grant
    Filed: July 29, 1974
    Date of Patent: August 3, 1976
    Assignee: A.G. fur industrielle Elektronik AGIE Losone b. Locarno
    Inventors: Werner Ullmann, Bernardo Ferroni, Bernd Schumacher
  • Patent number: 3961270
    Abstract: In order to provide respective series of control signals for controlling separate items of apparatus, some of which may be redunant, there are provided a plurality of independently operable signal generators and a plurality of gating circuits connected to the generators and each operable to produce a respective control signal when it receives at least a predetermined number, dependent upon a chosen degree of redundancy of the generators, of correctly timed signals from the generators. Each generator is provided with a phase comparator type timing control device which adjusts the generator if its signals go out of synchronism with those of the other generators. The apparatus to be controlled can be a computer, a multiple-rectifier power supply or the like, and in connecting lines between various parts of the control apparatus and the controlled apparatus isolating devices can be provided.
    Type: Grant
    Filed: November 7, 1974
    Date of Patent: June 1, 1976
    Assignee: A.G. fur industrielle Elektronik AGIE Losone b. Locarno
    Inventors: Werner Ullmann, Renato Derighetti, Umberto Gagliati