Continuous measurement for determining a suitable mounting position or for quality-testing of gear sets

A method for testing a first gear wheel in connection with a second gear wheel, the method comprising the steps of:

• providing a roll-off device, having a first spindle for the rotatable seating of the first gear wheel, a second spindle for the rotatable seating of the second gear wheel, a drive mechanism coupled to the first spindle for generating a rotary movement of the first gear wheel, a drive mechanism coupled to the second spindle for acting on the second gear wheel with a positive or negative torque, a displacement device coupled to the system for changing the positioning of the first gear wheel relative to the second gear wheel, a measurement pick-up device in communication with the roll-off device and having two angle encoders, and an evaluation unit, which processes coordinate information ((S(X, Y, Z)) describing the position of the first gear wheel in relation to the second gear wheel, processes signals from the measurement pick-up device and signals from the two angle encoders, the roll-off device being controllable in such a way that various positionings of the first gear wheel in relation to the second gear wheel are passed, wherein the measurement pick-up device and the angle encoders continuously pick up signals in the course of this passage, and wherein the evaluation unit processes the continuously picked-up signals together with the coordinate information ((S(X, Y, Z)) and
• displacing the first gear wheel relative to the second gear wheel in order to bring the two gear wheels into engagement and to set a starting point, driving the first gear wheel for putting it into rotation, wherein the second gear wheel rolls off on the first gear wheel, displacing the first gear wheel in relation to the second gear wheel along a displacement vector{right arrow over (V)} (t), picking up an analog measuring signal describing the oscillation properties of the two gear wheels, picking up signals describing the rotational properties of the two gear wheels, determining a hypothetical curve by processing the analog measuring signal, of the signals describing the rotational properties, including the position information describing the position of the first gear wheel in relation to the second gear wheel, interpolating the hypothetical curve for determining suitable positioning.

A system for testing a first gear wheel in connection with a second gear wheel, with a roll-off device, having

• a first spindle for the rotatable seating of the first gear wheel,
• a second spindle for the rotatable seating of the second gear wheel,
• a drive mechanism coupled to the first spindle for generating a rotary movement of the first gear wheel,
• a drive mechanism coupled to the second spindle for acting on the second gear wheel with a positive or negative torque,
• a displacement device coupled to the system for changing the positioning of the first gear wheel relative to the second gear wheel,
• a measurement pick-up device in communication with the roll-off device and having two angle encoders, and an evaluation unit, which
• processes coordinate information ((S(X, Y, Z)) describing the position of the first gear wheel in relation to the second gear wheel,
• processes signals from the measurement pick-up device and signals from the two angle encoders,
• the roll-off device being controllable in such a way that various positionings of the first gear wheel in relation to the second gear wheel are passed,
• wherein the measurement pick-up device and the angle encoders continuously pick up signals in the course of this passage, and
• wherein the evaluation unit processes the continuously picked-up signals together with the coordinate information ((S(X, Y, Z)) and further the evaluation unit interpolates characteristic values from at least one of the signal from the measurement pick-up device and the signals from the angle encoders at predetermined positions, which correspond to a defined positioning of the first gear wheel relative to the second gear wheel.

A software module for use in an evaluation units for testing a first gear wheel in connection using an apparatus having a second gear wheel with a roll-off device, having a first spindle for the rotatable seating of the first gear wheel, a second spindle for the rotatable seating of the second gear wheel, a drive mechanism coupled to the first spindle for generating a rotary movement of the first gear wheel, a drive mechanism coupled to the second spindle for acting on the second gear wheel with a positive or negative torque, a displacement device coupled to the system for changing the positioning of the first gear wheel relative to the second gear wheel, a measurement pick-up device in communication with the roll-off device and having two angle encoders, and an evaluation unit, which processes coordinate information ((S(X, Y, Z)) describing the position of the first gear wheel in relation to the second gear wheel, processes signals from the measurement pick-up device and signals from the two angle encoders, the roll-off device being controllable in such a way that various positionings of the first gear wheel in relation to the second gear wheel are passed, wherein the measurement pick-up device and the angle encoders continuously pick up signals in the course of this passage, and wherein the evaluation unit processes the continuously picked-up signals together with the coordinate information ((S(X, Y, Z)), wherein the software module performs the following steps when the evaluation unit does the testing:

• displacing the first gear wheel in relation to the second gear wheel in order to bring the two gear wheels into engagement and to set a starting point, driving the first gear wheel for puffing it into rotation, wherein the second gear wheel rolls off on the first gear wheel, displacing the first gear wheel in relation to the second gear wheel along a displacement vector{right arrow over (V)} (t), picking up an analog measuring signal describing the oscillation properties of the two gear wheels, picking up signals describing the rotational properties of the two gear wheels, determining a hypothetical curve by processing the analog measuring signal, of the signals describing the rotational properties, including the position information describing the position of the first gear wheel in relation to the second gear wheel, interpolating the hypothetical curve for determining suitable positioning.

An evaluation unit for testing a first gear wheel in connection with a second gear wheel, having a computer and a software module which performs the following steps when the computer does the testing:

• displacing the first gear wheel in relation to the second gear wheel in order to bring the two gear wheels into engagement and to set a starting point,
• driving the first gear wheel for putting it into rotation, wherein the second gear wheel rolls off on the first gear wheel,
• displacing the first gear wheel in relation to the second gear wheel along a displacement vector{right arrow over (V)} (t),
• picking up an analog measuring signal describing the oscillation properties of the two gear wheels,
• picking up signals describing the rotational properties of the two gear wheels,
• determining a hypothetical curve by processing the analog measuring signal, of the signals describing the rotational properties, including the position information describing the position of the first gear wheel in relation to the second gear wheel,
• interpolating the hypothetical curve for determining suitable positioning.

A system for testing a first gear wheel in connection with a second gear wheel, with a roll-off device, having

• a first spindle for the rotatable seating of the first gear wheel,
• a second spindle for the rotatable seating of the second gear wheel,
• a drive mechanism coupled to the first spindle for generating a rotary movement of the first gear wheel,
• a drive mechanism coupled to the second spindle for acting on the second gear wheel with a positive or negative torque,
• a displacement device coupled to the system for changing the positioning of the first gear wheel relative to the second gear wheel,
• a measurement pick-up device in communication with the roll-off device and having two angle encoders, and an evaluation unit, which
• processes coordinate information ((S(X, Y, Z)) describing the position of the first gear wheel in relation to the second gear wheel,
• processes signals from the measurement pick-up device and signals from the two angle encoders,
• the roll-off device being controllable in such a way that various positionings of the first gear wheel in relation to the second gear wheel are passed,
• wherein the measurement pick-up device and the angle encoders continuously pick up signals in the course of this passage, and
• wherein the evaluation unit processes the continuously picked-up signals together with the coordinate information ((S(X, Y, Z)) by means of a computer.

A system for testing a first gear wheel in connection with a second gear wheel, with a roll-off device, having

• a first spindle for the rotatable seating of the first gear wheel,
• a second spindle for the rotatable seating of the second gear wheel,
• a drive mechanism coupled to the first spindle for generating a rotary movement of the first gear wheel,
• a drive mechanism coupled to the second spindle for acting on the second gear wheel with a positive or negative torque,
• a displacement device coupled to the system for changing the positioning of the first gear wheel relative to the second gear wheel,
• a measurement pick-up device in communication with the roll-off device and having two angle encoders, and an evaluation unit, which
• processes coordinate information ((S(X, Y, Z)) describing the position of the first gear wheel in relation to the second gear wheel,
• processes signals from the measurement pick-up device and signals from the two angle encoders,
• the roll-off device being controllable in such a way that various positionings of the first gear wheel in relation to the second gear wheel in both fraction mode and thrust mode are passed,
• wherein the measurement pick-up device and the angle encoders continuously pick up signals in the course of these passages, and
• wherein the evaluation unit processes the continuously picked-up signals together with the coordinate information ((S(X, Y, Z)) and then smooths it by the application of an algorithm.