Fastener tightening system utilizing identification technology

• US 20080178713A1
• Filed: 01/31/2007
• Published: 07/31/2008
• Est. Priority Date: 01/31/2007
• Status: Abandoned Application

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Long, Robert Earl, Roley, John, Venkata Sukhavasi, Nanda Kishore, Nash, Jeffrey P.
• Application Number:
  US11/700,104
• Publication Number:
  US 20080178713A1
• Time in Patent Office: Days
• US Class Current: 81/467
• CPC Class Codes: B23P 19/066 by electrical means
• CPC Class Codes: B25B 21/00 Portable power-driven screw or nut setting or loosening tools; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00; for mounting or dismounting wheels B60B29/006; Attachments for drilling apparatus serving the same purpose machines B23P19/06
• CPC Class Codes: B25B 23/14 Arrangement of torque limiters or torque indicators in wrenches or screwdrivers couplings for transmitting rotation or clutches F16D; devices for measuring torque per se G01L

Abstract

In one aspect, the present disclosure is directed toward a fastener tightening system. The system has a tightening tool configured to apply a torque to a fastener. Additionally, the system has a fastener data storage device located on the fastener and configured to store data related to the associated fastener. The system further has at least one component data storage device located on a component receiving the fastener to store data related to a tightening process. A data sensor is also included and is configured to sense data stored on the fastener data storage device and the at least one component data storage device. The system also has a controller configured to regulate operation of the tightening tool based on the sensed data and the sensed parameter.

Claims

1. A fastener tightening system comprising:

a tightening tool configured to apply torque to a fastener;

a fastener data storage device located on the fastener to store data related to the associated fastener;

at least one component data storage device located on a component receiving the fastener to store data related to a tightening process;

a data sensor configured to sense data stored on the fastener data storage device and the at least one component data storage device; and

a controller configured to regulate operation of the tightening tool based on the sensed data and the sensed parameter.

2. The fastener tightening system of claim 1, wherein the at least one component data storage device is located adjacent to a mating hole receiving the fastener.

3. The fastener tightening system of claim 2, wherein the tightening tool is configured to apply a first torque to the fastener until the axial load acting on the fastener is approximately equal to an initial target axial load, the initial target axial load being determined from the data stored on the at least one component data storage device.

4. The fastener tightening system of claim 3, wherein the tightening tool is configured to apply a subsequent torque to the fastener until the axial load acting on the fastener is approximately equal to a final target axial load, the final target axial load being determined from data stored on the at least one component data storage device.

5. The fastener tightening system of claim 4, wherein the tightening tool is configured to apply the first and subsequent torques to multiple fasteners in a predetermined sequence determined from data stored on the at least one component data storage device.

6. The fastener tightening system of claim 1, wherein the at least one component data storage device is a radio frequency identification device.

7. The fastener tightening system of claim 1, wherein the at least one component data storage device is a coded indicia.

8. The fastener tightening system of claim 1, wherein the fastener data storage device is a radio frequency identification device.

9. The fastener tightening system of claim 1, wherein the fastener data storage device is a coded indicia.

10. A method for tightening a fastener comprising:

reading data stored on a component and the fastener;

applying a first torque to the fastener based on the read data;

adjusting the magnitude of the applied first torque based on the read data;

applying a subsequent torque to the fastener based on the read data; and

adjusting the magnitude of the applied subsequent torque based on the read data.

11. The method of claim 10, further including applying the first and subsequent torques to multiple fasteners in a predetermined sequence based on the read data.

12. The method of claim 11, further including sensing at least one parameter indicative of a first and a subsequent axial load acting on the fastener.

13. The method of claim 12, further including adjusting the magnitude of the applied first torque based on the at least one parameter.

14. The method of claim 13, further including applying the first torque to the fastener until the first axial load acting on the fastener is essentially equivalent to a target initial axial load.

15. The method of claim 14, further including applying the subsequent torque to the fastener until the subsequent axial load acting on the fastener is essentially equivalent to a target final axial load.

16. A fastener tightening system comprising:

a tightening tool configured to apply a torque to a fastener;

a strain sensor configured to sense a parameter of the fastener indicative of an elongation of the fastener;

a stress sensor configured to sense a parameter of the fastener indicative of the magnitude of an applied torque;

a fastener data storage device located on the fastener to store identification data to identify the associated fastener;

at least one component data storage device located on a component receiving the fastener to store data related to a tightening process;

a controller configured to determine a tightening sequence, an initial target axial load, and multiple subsequent target axial loads based on the sensed data, and regulate operation of the tightening tool based on the determined tightening sequence, initial target axial load, and subsequent target axial load.

17. The fastener tightening system of claim 16, wherein the tightening tool is configured to apply a first torque to the fastener until the axial load acting on the fastener is approximately equal to the determined initial target axial load.

18. The fastener tightening system of claim 17, wherein the tightening tool is configured to apply multiple subsequent torques to the fastener until the axial load acting on the fastener is approximately equal to a final target axial load determined from the sensed data.

19. The fastener tightening system of claim 18, wherein the tightening tool is configured to apply the first and subsequent torques to the multiple fasteners in the predetermined sequence.

20. The fastener tightening system of claim 19, wherein the fastener data storage device and at least one component data storage device is one of a radio frequency identification device and a coded indicia.