MOVING STOP STATION FOR ROBOTIC ASSEMBLY

• US 20130035783A1
• Filed: 08/05/2011
• Published: 02/07/2013
• Est. Priority Date: 08/05/2011
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Scheuerman, Robert J., Rourke, Rick F., Shi, Jianying, Tavora, Peter W., Groll, David
• Granted Patent: US 8,700,205 B2
• Time in Patent Office: Days
• US Class Current: 700/230
• CPC Class Codes: B23P 21/008 the assembling machines or tools moving synchronously with the units while these are being assembled
• CPC Class Codes: B23P 2700/50 Other automobile vehicle parts, i.e. manufactured in assembly lines
• CPC Class Codes: B62D 65/18 Transportation, conveyor or haulage systems specially adapted for motor vehicle or trailer assembly lines conveyors and haulage in general B65G

Abstract

A moving stop station includes a vehicle carrier configured to move a vehicle along an assembly line, an assembly platform disposed adjacent to the assembly line, and a synchronizer in communication with the vehicle carrier and the assembly platform. The synchronizer is configured to synchronize the motion of the assembly platform with the motion of the vehicle carrier as the vehicle carrier moves along a length of the assembly line, and includes a sensor, processor, and actuator. The sensor is configured to sense the position of the vehicle carrier and to generate a position signal corresponding to the sensed position. The processor is configured to receive the position signal and selectively provide a synchronization signal in response, and the actuator is configured to receive the synchronization signal and synchronize the motion of the vehicle carrier and the motion of the assembly platform in response.

Claims

1. A moving stop station comprising:

a vehicle carrier configured to move a vehicle along an assembly line in a substantially constant direction;

an assembly platform disposed adjacent to the assembly line, the assembly platform being movably translatable in a direction substantially parallel to the assembly line; and

a synchronizer in communication with the vehicle carrier and with the assembly platform, the synchronizer configured to synchronize the motion of the assembly platform with the motion of the vehicle carrier as the vehicle carrier moves along a length of the assembly line, the synchronizer including;

a sensor configured to sense the position of the vehicle carrier and to generate a position signal corresponding to the sensed position;

a processor configured to receive the position signal and to selectively provide a synchronization signal in response to the position signal; and

an actuator configured to receive the synchronization signal and to synchronize the movement of the vehicle carrier with the movement of the assembly platform in response thereto, wherein the synchronization results in substantially no relative motion between the vehicle carrier and the assembly platform.

2. The moving stop station of claim 1, wherein the synchronizer further includes a mechanical stabilizer coupled with the actuator;

and

wherein the actuator is configured to extend the mechanical stabilizer between the vehicle carrier and the assembly platform in response to the synchronization signal.

3. The moving stop station of claim 2, wherein the assembly platform includes a drive mechanism and a clutch configured to selectively disengage the drive mechanism;

the drive mechanism configured to translate the assembly platform along the assembly line;

wherein the actuator is disposed on the vehicle carrier; and

wherein the clutch is configured to disengage the drive mechanism in response to the extension of the mechanical stabilizer from the vehicle carrier to the assembly platform.

4. The moving stop station of claim 2, wherein the assembly line includes a moving drive line, the vehicle carrier being selectively engagable with the drive line;

wherein the actuator is disposed on the assembly platform; and

wherein the vehicle carrier is configured to disengage from the drive line in response to the extension of the mechanical stabilizer from the assembly platform to the vehicle carrier.

5. The moving stop station of claim 2, wherein the vehicle carrier is configured to enter the moving stop station at an entry point, and configured to exit the moving stop station at an exit point, the entry point and exit point being positions disposed along the length of the assembly line;

and

wherein the actuator is configured to retract the mechanical stabilizer prior to the carrier crossing the exit point.

6. The moving stop station of claim 5, wherein the position signal is indicative of the vehicle carrier crossing the entry point.

7. The moving stop station of claim 1, wherein the actuator includes a drive mechanism coupled to the assembly platform, the drive mechanism configured to translate the assembly platform along the assembly line.

8. The moving stop station of claim 7, wherein the sensor is a proximity sensor;

and

wherein the position signal is indicative of the position of the vehicle carrier along the assembly line relative to the position of the assembly platform along the assembly line.

9. The moving stop station of claim 7, wherein the sensor includes a target tracking camera and a target;

and

wherein the position signal is indicative of the position of the vehicle carrier along the assembly line relative to the position of the assembly platform along the assembly line.

10. The moving stop station of claim 7, wherein the sensor includes an encoder.

11. The moving stop station of claim 7, further comprising a first length, a second length, and a third length respectively ordered along the assembly line;

and

wherein the synchronizer is configured to synchronize the motion of the assembly platform with the motion of the vehicle carrier as the vehicle carrier passes through the first length and the third length; and

wherein the motion of the assembly platform is not synchronized with the motion of the vehicle carrier as the vehicle carrier passes through the second length.

12. The moving stop station of claim 1, wherein the assembly platform includes a precision robotic assembly device.

13. A moving stop station comprising:

a vehicle carrier configured to move a vehicle along an assembly line in a substantially constant direction;

an assembly platform disposed adjacent to the assembly line, the assembly platform being movably translatable in a direction substantially parallel to the assembly line; and

a synchronizer in communication with the vehicle carrier and with the assembly platform, the synchronizer configured to synchronize the motion of the assembly platform with the motion of the vehicle carrier as the vehicle carrier moves along a length of the assembly line, the synchronizer including;

a sensor configured to sense the position of the vehicle carrier and to generate a position signal corresponding to the sensed position;

a processor configured to receive the position signal and to selectively provide a synchronization signal in response to the position signal; and

an actuator including a drive mechanism coupled to the assembly platform and configured to translate the assembly platform along the assembly line, the drive mechanism configured to receive the synchronization signal and to synchronize the motion of the vehicle carrier and the motion of the assembly platform in response thereto, wherein the synchronization results in substantially no relative motion between the vehicle carrier and the assembly platform.

14. The moving stop station of claim 13, wherein the sensor is a proximity sensor;

and

wherein the position signal is indicative of the position of the vehicle carrier along the assembly line relative to the position of the assembly platform along the assembly line.

15. The moving stop station of claim 13, wherein the sensor includes a target tracking camera and a target;

and

wherein the position signal is indicative of the position of the vehicle carrier along the assembly line relative to the position of the assembly platform along the assembly line.

16. The moving stop station of claim 13, further comprising a first length, a second length, and a third length respectively ordered along the assembly line;

and

wherein the synchronizer is configured to synchronize the motion of the assembly platform with the motion of the vehicle carrier as the vehicle carrier passes through the first length and the third length; and

wherein the motion of the assembly platform is not synchronized with the motion of the vehicle carrier as the vehicle carrier passes through the second length.

17. The moving stop station of claim 13, wherein the vehicle carrier is an automated guided vehicle.

18. The moving stop station of claim 13, wherein the vehicle carrier is configured to enter the moving stop station at an entry point, and configured to exit the moving stop station at an exit point, the entry point and exit point being positions disposed along the length of the assembly line;

and

wherein the drive mechanism is configured to translate the assembly platform to a location proximate the entry point when the vehicle carrier exits the moving stop station.