AUTOMATIC AND SEMI-AUTOMATIC WELDING SYSTEMS AND METHODS

• US 20110290765A1
• Filed: 05/24/2011
• Published: 12/01/2011
• Est. Priority Date: 05/26/2010
• Status: Active Grant

• Current Assignee: Illinois Tool Works Inc.
• Original Assignee: Illinois Tool Works Inc.
• Inventors: Batzler, Todd Gerald, Waller, Michael Leo, Albrecht, Bruce Patrick
• Granted Patent: US 9,855,622 B2
• Time in Patent Office: Days
• US Class Current: 219/78.01
• CPC Class Codes: B23K 26/0884 in at least in three axial directions, e.g. manipulators, robots
• CPC Class Codes: B23K 9/00 Arc welding or cutting electro-slag welding B23K25/00; welding transformers H01F; welding generators H02K
• CPC Class Codes: B23K 9/0953 using computing means
• CPC Class Codes: B23K 9/32 Accessories earthing connections H01R
• CPC Class Codes: G09B 19/24 Use of tools

Abstract

Methods and devices for control for an automated welding system are provided. Disclosed control methods may include receiving a data set including one or more features of a joint to be welded and receiving a weld procedure for the joint to be welded. The weld procedure for the joint is determined based on a sample virtual weld performed by an operator, a stored procedure developed for a substantially similar weld joint, or a combination thereof. The method may further include determining one or more desired changes to the weld procedure based on the received features of the joint to be welded and generating an updated weld procedure by altering one or more parameters of the received weld procedure in accordance with the one or more desired changes, wherein the one or more parameters are included within a predetermined allowable data set.

Claims

1. A method of control for an automated welding system, comprising:

receiving a data set including one or more features of a joint to be welded;

receiving a weld procedure for the joint to be welded, wherein the weld procedure for the joint is determined based on a sample virtual weld performed by an operator or a combination of the sample virtual weld performed by an operator and a stored procedure developed for a substantially similar weld joint;

determining one or more desired changes to the weld procedure based on the received features of the joint to be welded; and

generating an updated weld procedure by altering one or more parameters of the received weld procedure in accordance with the one or more desired changes, wherein the one or more parameters are included within a predetermined allowable data set.

2. The method of claim 1, comprising alerting the operator when the determined one or more changes to the weld procedure are not included in the allowable data set, the determined one or more changes are not within a previously encountered data set, or a combination thereof.

3. The method of claim 1, comprising performing the updated weld procedure on the joint.

4. The method of claim 1, comprising utilizing an imaging system to acquire information regarding an additional feature of the joint and determining the one or more desired changes based in part on the acquired information regarding the additional feature.

5. The method of claim 1, wherein the one or more features of the joint to be welded includes material thickness, energy input, interpass temperature, weld bead profile, or a combination thereof.

6. The method of claim 1, wherein the one or more desired changes include changes in a wire feed speed, a quantity of weld passes, a voltage, a travel speed, torch angle, wire placement, or a combination thereof.

7. The method of claim 1, comprising performing a portion of the weld procedure on the joint and enabling the operator to weld or utilize a virtual torch to weld during a remaining portion of the weld procedure.

8. A welding system, comprising:

a welding power supply comprising power conversion circuitry configured to receive primary power and to convert the primary power to a weld power output;

control circuitry configured to receive a pseudoweld procedure for a weld joint and to generate a weld procedure for welding the weld joint based on the pseudoweld procedure, information regarding a feature of the weld joint, and an allowed parameter set; and

a robotic welding device configured to receive the weld power from the welding power supply and a control signal from the control circuitry, wherein the control signal encodes parameters enabling the robot welding device to perform the weld procedure on the weld joint.

9. The welding system of claim 8, wherein the pseudoweld procedure comprises a weld procedure generated by a welding operator via a virtual reality interface.

10. The welding system of claim 8, comprising a weld joint evaluation system comprising an imaging system configured to visually evaluate the weld joint and, based on the visual evaluation of the weld joint, communicate the information regarding a feature of the weld joint to the control circuitry.

11. The welding system of claim 8, comprising a virtual reality system configured to enable an operator to develop the pseudoweld procedure for the weld joint and to communicate the developed pseudoweld procedure to the control circuitry.

12. The welding system of claim 8, wherein the control circuitry is further configured to enable an auto mode and a semi-auto mode, wherein when the auto mode is enabled, the robotic welding device is configured to perform the weld procedure and when the semi-auto mode is enabled, the robotic welding device is configured to cooperate with an operator to perform the weld procedure.

13. The welding system of claim 8, wherein the allowed parameter set comprises a torch angle tolerance, a travel speed tolerance, a wire feed speed tolerance, or a combination thereof.

14. The welding system of claim 8, wherein the control circuitry is configured to alert an operator to the presence of an error when the generated weld procedure for the weld joint is not within the allowed parameter set.

15. The welding system of claim 8, wherein the robotic welding device comprises an optical detection system configured to monitor the weld joint while the robot welding device is performing the weld procedure on the weld joint.

16. The welding system of claim 8, wherein the robotic welding device comprises an augmented reality system capable of being utilized by an inexperienced welding operator.

17. A robotic welding device, configured to:

receive a data set including one or more features of a joint to be welded;

determine a weld procedure for the joint to be welded based on the received data set;

perform a weld operation by implementing the weld procedure on the weld joint;

receive a desired weld procedure change from an operator during the weld operation; and

perform the weld operation by implementing the weld procedure change on the weld joint when the weld procedure change is within a predefined allowable subset.

18. The robotic welding device of claim 17, wherein the desired weld procedure change is determined by comparing a virtual weld procedure established by the operator to the weld procedure determined by the robotic welding device.

19. The robotic welding device of claim 17, wherein the data set comprises joint thickness, material thickness, energy input, interpass temperature, weld bead profile, or a combination thereof.

20. The robotic welding device of claim 17, configured to alert the operator to the presence of an error when the weld procedure change is not within the predefined allowable subset.

21. The robotic welding device of claim 20, configured to receive an override command from the operator and, when the override command is received, to implement the weld procedure change.