Method to monitor proper fastening of an article of assembly at more than one location

• US 20070073437A1
• Filed: 09/12/2005
• Published: 03/29/2007
• Est. Priority Date: 09/12/2005
• Status: Abandoned Application

• Current Assignee: Lms-Walt, Inc.
• Original Assignee: Lms-Walt, Inc.
• Inventors: Walt, Michael
• Application Number:
  US11/224,536
• Publication Number:
  US 20070073437A1
• Time in Patent Office: Days
• US Class Current: 700/174
• CPC Class Codes: G05B 19/41805 characterised by assembly
• CPC Class Codes: G05B 2219/45022 Auto seat, dentist chair, roll wheel chair
• CPC Class Codes: G05B 2219/45203 Screwing
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

A full proof method to relate torque values to a fastener position has been presented. A unique number based on a position location is used in conjunction with running fasteners in a fixed order allows a person to be able to prove the torque value of an installed fastener. The method may be used in a single assembly fastener station environment or a multiple assembly fastener station environment.

Claims

1. A method to set an unique identifier for fasteners in an assembly system having a torque controller that controls and collects the torque value for running down assembly fasteners, the method comprising the steps of:

a) receiving an input having indications of an identification number and a fastener number for an assembly fastener, the identification number and fastener number forming the unique identifier;

b) converting the input into a string having a pre-determined format readable by the torque controller;

c) sending the string to the torque controller; and

d) repeating steps a-c for each input received.

2. The method of claim 1 wherein the pre-determined format is in the format of X_Y, where X and Y are integer values.

3. The method of claim 2 wherein the input comprises two sets of data and X is the integer value of one of the sets of data and Y is the integer value of the other of the sets of data.

4. The method of claim 1 wherein the step of repeating steps a-c for each input received includes the step of repeating steps a-c if a change in state of the input occurs.

5. The method of claim 1 further comprising the steps of:

associating the string with the torque value of a fastener; and

storing the string with the torque value.

6. The method of claim 1 wherein the step of receiving the input comprises receiving a first set of inputs and a second set of inputs, the first set of inputs identifying the identification number and the second set of inputs identifying a fastener number.

7. The method of claim 6 wherein the identification number comprises one of a serial number and a sequence number.

8. The method of claim 1 wherein the torque controller comprises a plurality of torque controllers and the input comprises three sets of data, one of the sets of data indicating and the other sets of data provide the indication of the identification number and the fastener number.

9. A computer-readable medium having computer executable instructions for setting an unique identifier for fasteners in an assembly system having a torque controller that controls and collects the torque value for running down assembly fasteners, the computer executable instructions performing the steps of:

a) receiving an input having indications of an identification number and a fastener number for an assembly fastener, the identification number and fastener number forming the unique identifier;

b) converting the input into a string having a pre-determined format readable by the torque controller;

c) sending the string to the torque controller; and

d) repeating steps a-c for each input received.

10. The computer-readable medium of claim 9 wherein the pre-determined format is in the format of X_Y, where X and Y are integer values.

11. The computer-readable medium of claim 10 wherein the input comprises two sets of data and X is the integer value of one of the sets of data and Y is the integer value of the other of the sets of data.

12. The computer-readable medium of claim 9 wherein the step of repeating steps a-c for each input received includes the step of repeating steps a-c if a change in state of the input occurs.

13. The computer-readable medium of claim 9 having further computer-executable instructions for performing the steps comprising:

associating the string with the torque value of a fastener; and

storing the string with the torque value.

14. The computer-readable medium of claim 9 wherein the step of receiving the input comprises receiving a first set of inputs and a second set of inputs, the first set of inputs identifying the identification number and the second set of inputs identifying a fastener number.

15. The computer-readable medium of claim 14 wherein the identification number comprises one of a serial number and a sequence number.

16. The computer-readable medium of claim 9 wherein the torque controller comprises a plurality of torque controllers and the input comprises three sets of data, one of the sets of data indicating and the other sets of data provide the indication of the identification number and the fastener number.