Mauser-werke Oberndorf Gmbh

Otto Klingler

Kurt Linder

Siegfried Gruhler

Gunther Ross

Helmut Rivinius

A capacitance length and/or angle measuring device has a transducer comprising a stationary part (1) forming a scale and a part (2) displaceable parallel over the surface of the scale, at a short distance therefrom and acting as a sensing unit. The opposite surfaces of the scale and sensing unit are provided with capacitor coatings (5,6,7,8,9). The mechanical quantity to be measured causes an area vibration of a capacitor, the capacitance variation resulting therefrom acting as a variable capacitive reactance in a circuit, which changes the phase position of the electrical signals. With an appropriate configuration of the capacitor surfaces one obtains a linear function between the mechanical quantity to be measured and the phase portion of the signals.

Capacitive displacement measuring device with T-shaped scale coatings

A method for the automatic, correctly positioned transfer and clamping of workpieces, especially rotationally-symmetrical, thin-walled workpieces, which are imparted on interdependent finishing or processing on both sides thereof in a machining work station, in which the workpiece is retained through the intermediary of vacuum-operated clamping units, and which are maintained in a transferring and receiving work station through main spindles coaxially facing towards each other. Furthermore, also provided is an arrangement for implementing the above-mentioned inventive method for the automatic, correctly positioned transfer and clamping of workpieces, especially, rotationally-symmetrical, thin-walled workpieces.

Method and arrangement for the automatic transfer and clamping of

A sensing head of a measuring machine comprises three straight line guiding systems for respective x, y and Z directions. For weight compensation of each single straight line guiding system, a first spring pair is arranged between a fixed beam element and a beam of the first straight line guiding system. This compensates the weight loading the first straight line guiding system. Between the beam of the first straight line guiding system and a beam of the second straight line guiding system, a second spring pair is arranged which compensates the weight loading the second straight line guiding system. Between the beam of the second straight line guiding system and a beam of the third straight line guiding system, a third spring pair is arranged which compensates the weight loading the third straight line guiding system.

Sensing head for a measuring machine

In a length measuring device with a measuring transducer system, the curve of two sinusoidal test signals is dependent on the longitudinal movement of the measuring transducer system. An interpolation circuit delivers two high-resolution rectangular pulse sequences F1, F2 corresponding to the interpolated sinusoidal voltages and offset by 90.degree., to an evaluating circuit. To achieve a high-resolution at low speeds of travel and a low-resolution at high speeds, two rectangular pulse sequences S1, S2 or G1, G2, offset by 90.degree. and giving a low-resolution, are additionally derived at the interpolation circuit. A control logic circuit 19 monitors the test voltages for attainment of a certain value of the longitudinal movement per unit time or speed of travel. The control logic circuit lets only the low-resolution rectangular pulse sequences through to the evaluating circuit when this value is exceeded, while it lets the high-resolution rectangular pulse sequences with the low-resolution rectangular pulse sequences when this value is not reached.

Length measuring device

A measuring process for evaluation of the machining capability or quality of multi-spindle rotary machining or turning unit utilized for the production of preferably rotationally-symmetrical workpieces which are to be finished on both sides, and for the intermediate and/or final evaluation of workpieces which are finished in that manner. Furthermore, the invention also relates to a measuring installation for the implementation of this measuring process. The foregoing objects are inventively achieved in the measuring installation which is independently programmable relative to the multi-spindle rotary machining unit, measures multi-dimensionally and is autonomous in itself, is roughly positioned in front of the applicable workpiece pickup arrangement of the multi-spindle rotary machining unit, and through sensing with measuring feelers of the measuring installation at predetermined reference points, measures in a first step the correctly positioned pickup of the workpiece which is clamped into the workpiece pickup device, and decides with regard whether the turning is to be effected, through providing a signal to the control arrangement of the multi-spindle rotary machining unit, and the workpiece after the effected turning in a second step, so as to decide with regard to its further treatment through a signal transmission to the control arrangement of the multi-spindle rotary machining unit.

Measuring process for the inspection of turned parts finished on both

In a sensor head of a measuring machine, for at least one coordinate, a straight line guiding mechanism is provided between two base parts. Springs acting in this coordinate bring the two base parts into abutment. To achieve a slackfree, stable position of rest, a stop element with a stop face for each base part is displaceable in both directions of the coordinate, counter to the action of a spring. Both stop faces point in the same direction of the coordinate. For movement, stroke lengths are free on both sides.

Sensor head with stop elements for establishing stable rest position

In a multi-coordinate measuring machine, a contact pin is movable relative to an upper part of a measuring head, in the X, Y and Z directions. The contact pin must be mounted so as to be displaceable from its zero position, and blockable in position in each of these directions. To simplify the construction, the mechanism for displacing and blocking the movements of the pin are combined in the form of an electrodynamic transducer for each of the three directions. The transducer is formed of a pair of aligned coils which are each associated with a permanent magnet.

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Oberndorf-Boll, Germany

Otto Klingler