Machining head having a balancing device

Patent metadata

Field	Value
Publication number	US-10183350-B2
Application number	US-201615268144-A
Country	US
Kind code	B2
Filing date	Sep 16, 2016
Priority date	Oct 5, 2015
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

The present disclosure relates to a machining head for a gear manufacturing machine having at least one driven motor spindle and at least one counter-spindle, wherein a tool arbor having at least one tool arranged thereon is mounted between the motor spindle and the counter-spindle, and wherein at least one balancing device is integrated within the driven motor spindle and at least one balancing device is integrated within the counter-spindle.

First claim

The invention claimed is:

1. A machining head for a gear manufacturing machine, comprising:
at least one driven motor spindle including at least one balancing device integrated within the at least one driven motor spindle;
at least one counter-spindle including at least one balancing device integrated within the at least one counter-spindle; and
a tool arbor having at least one tool arranged thereon mounted between the motor spindle and the counter-spindles;
wherein the at least one balancing device integrated within the at least one driven motor spindle is completely or almost completely included within a housing of the motor spindle and is integrated into a rotor of the motor spindle, and wherein the at least one balancing device integrated within the at least one counter-spindle is completely or almost completely included within a housing of the counter-spindle and is integrated into a shaft of the counter-spindle.

2. The machining head of claim 1 , wherein the at least one balancing device of the motor spindle and the at least one balancing device of the counter-spindle form a two-plane balancing device.

3. The machining head of claim 1 , wherein the at least one balancing device of the motor spindle is arranged within the motor spindle behind or below a front spindle bearing of the motor spindle, and wherein the at least one balancing device of the counter-spindle is arranged within the counter-spindle behind or below a front spindle bearing of the counter-spindle.

4. The machining head of claim 1 , further comprising at least one vibration sensor coupled to the motor spindle or the counter-spindle, wherein the at least one vibration sensor is configured to record vibrations during gear manufacturing machining, and wherein the at least one vibration sensor is communicationally connectable to a control of the gear manufacturing machine.

5. The machining head of claim 4 , further comprising at least one signal transmitter configured to adjust the at least one balancing device integrated within the at least one driven motor spindle and the at least one balancing device integrated within the at least one counter-spindle, and wherein the at least one signal transmitter is arranged at a rear end of the motor spindle or the counter-spindle.

6. The machining head of claim 1 , wherein a spacing between the counter-spindle and the motor spindle is variably adjustable to a length of the at least one tool and a length of the tool arbor.

7. The machining head of claim 1 , wherein tools having small tool diameters are receivable on the tool arbor, and wherein the tools having small tool diameters include small grinding wheels, small grinding worms, and a combination of at least one small grinding worm and at least one small grinding wheel.

8. The machining head of claim 1 , wherein the motor spindle is operable at a spindle speed of more than 8,000 revolutions per minute.

9. The machining head of claim 1 , wherein no components of the at least one balancing device integrated within the at least one driven motor spindle are arranged in or at the tool arbor, and no components of the at least one balancing device integrated within the at least one counter-spindle are arranged in or at the tool arbor.

10. A gear manufacturing machine, comprising:
a control system; and
a machining head, including:
a first balancing device positioned within a motor-driven spindle;
a second balancing device positioned within a counter-spindle;
a tool arbor mounted between the motor-driven spindle and the counter-spindle; and
a signal transmitter;
wherein the control system is configured to receive vibration parameters from the signal transmitter of the machining head; and
wherein the control system includes instructions stored in non-transitory computer memory to adjust positions of the first balancing device and the second balancing device in response to the received vibration parameters, a spindle speed, or an angular position of the motor-driven spindle.

11. The gear manufacturing machine of claim 10 , wherein the first balancing device and the second balancing device are positioned along a shared axis.

12. The gear manufacturing machine of claim 11 , wherein a position of the first balancing device along the shared axis is adjustable by a first actuator, and wherein a position of the second balancing device along the shared axis is adjustable by a second actuator.

13. The gear manufacturing machine of claim 12 , wherein the tool arbor is positioned along the shared axis.

14. The gear manufacturing machine of claim 13 , wherein the signal transmitter is positioned at an end of the motor-driven spindle or an end of the counter-spindle, and away from the tool arbor.

15. A machining head for a gear manufacturing machine, comprising:
a first balancing device positioned within an interior of a first spindle;
a second balancing device positioned within an interior of a second spindle;
a shaft mounted between the first spindle and the second spindle, with the shaft configured to rotate along a shared axis of the first spindle and second spindle;
a first vibration sensor coupled to the first spindle;
a second vibration sensor coupled to the second spindle;
a control system electrically coupled with the first vibration sensor and the second vibration sensor;
a first actuator coupled with the first balancing device; and
a second actuator coupled with the second balancing device;
wherein the control system is configured to energize the first actuator in response to electrical signals from the first vibration sensor, and to energize the second actuator in response to electrical signals from the second vibration sensor.

Assignees

• Liebherr Verzahntech Gmbh

Inventors

• Plessing Matthias

Classifications

• B23F1/026

  with plural tools · CPC title

• B24B27/0076

  grinding machines comprising two or more grinding tools · CPC title

• B24B49/10

  involving electrical means (B24B49/02, B24B49/08 take precedence) · CPC title

• G01M1/32

  by adding material to the body to be tested, e.g. by correcting-weights · CPC title

• B24B47/12

  by mechanical gearing or electric power (B24B47/16 takes precedence) · CPC title