Plasma arc cutting system and persona selection process

• US 9,481,050 B2
• Filed: 07/24/2013
• Issued: 11/01/2016
• Est. Priority Date: 07/24/2013
• Status: Active Grant

• Current Assignee: Hypertherm Incorporated
• Original Assignee: Hypertherm Incorporated
• Inventors: Brine, Erik, Roberts, Jesse A., Mao, Junsong, Hoffa, Michael, Gould, Clayton, Twarog, Peter, Shipulski, E. Michael, Liebold, Stephen M., Hansen, Brett Andrew
• Primary Examiner(s): PASCHALL, MARK H
• Application Number:
  US13/949,364
• Publication Number:
  US 20150027998A1
• Time in Patent Office: 1,196 Days
• Field of Search: 219/121.44, 219/121.54, 219/121.55, 219/121.57, 219/121.45, 219/121.48, 219/121.59, 313/231.41, 313/231.51, 315/111.21
• US Class Current: 1/1
• CPC Class Codes: B23K 10/00 Welding or cutting by means of a plasma
• CPC Class Codes: B23K 10/006 Control circuits therefor circuits for plasma torches H05H1/36

Abstract

The invention features methods and apparatuses for establishing operational settings of a plasma arc cutting system. A plasma power supply includes a user selectable control. The user selectable control enables selection of a single cutting persona that establishes at least a current, a gas pressure or gas flow rate, and an operational mode of the plasma arc cutting system.

Claims

1. A method of establishing operational settings for a plasma arc cutting system, the method comprising:

providing a plasma power supply with a user selectable control;

enabling a plurality of cutting personas with the user selectable control, each cutting persona comprising a set of parameters customized for a particular kind of cut each cutting persona including at least;

(1) a current, (2) a gas pressure or a gas flow rate, and (3) at least one parameter of an operational mode; and

selecting one of the cutting personas from the plurality of cutting personas via the user-selectable control, thereby setting each of the parameters within the set of parameters defined by the cutting persona in one action to minimize operator activity.

2. The method of claim 1 wherein establishing at least one parameter of the operational mode further comprises controlling at least one of current ramping or gas ramping.

3. The method of claim 1 wherein establishing at least one parameter of the operational mode further comprises controlling at least one parameter of pilot arc operation.

4. The method of claim 1 wherein establishing at least one parameter of the operational mode further comprises controlling power output of the plasma power supply.

5. The method of claim 1 further comprising adjusting at least one operational setting of the plasma arc cutting system based on a workpiece thickness.

6. A method of establishing operational settings for a plasma arc cutting system, the method comprising:

providing a plasma power supply in communication with a controller;

configuring the controller with a plurality of sets of predetermined operational settings for the plasma arc cutting system;

enabling user selection of the sets of predetermined operational settings via a single selection dial in communication with the controller; and

selecting one set of predetermined operational settings from the plurality of sets of predetermined operational settings via the single selection dial, thereby setting each of the parameters within the selected set of predetermined operational settings to minimize operator activity,

wherein each of the sets of predetermined operational settings is customized for a particular kind of cut and comprises settings for establishing at least a current, a gas pressure or gas flow rate, and at least one parameter of an operational mode of the plasma arc cutting system.

7. The method of claim 6 wherein at least one of the sets of predetermined operational settings comprises settings for controlling current ramping and/or gas ramping.

8. The method of claim 6 wherein at least one of the sets of predetermined operational settings comprises settings for controlling pilot arc operation.

9. The method of claim 6 wherein at least one of the sets of predetermined operational settings comprises settings for controlling power output of the plasma power supply.

10. The method of claim 6 further comprising adjusting at least one operational setting of the plasma arc cutting system based on a workpiece thickness.

11. A plasma arc cutting system comprising:

a power supply for generating a plasma arc, the power supply capable of establishing at least a current, a gas pressure or gas flow rate, and an operational mode for the plasma arc cutting system;

a user-selectable control in communication with a controller, the controller enabling the power supply to establish a plurality of cutting personas, each cutting persona comprising specific values for the current, the gas pressure or gas flow rate, and at least one parameter of the operational mode, via a user'"'"'s selecting one of the cutting personas from the plurality of cutting personas in one action to minimize operator activity;

wherein the plurality of cutting personas are enabled with the user-selectable control, each cutting persona customized for a particular kind of cut.

12. The plasma arc cutting system of claim 11 wherein the controller enables selection of at least five distinct cutting personas.

13. The plasma arc cutting system of claim 11, further comprising a control panel disposed on the plasma arc cutting system, the control panel comprising the controller and a user interface.

14. The plasma arc cutting system of claim 13 wherein the user interface is an LCD-type user interface.

15. The plasma arc cutting system of claim 13 wherein the control panel further comprises at least one dial or button for selecting a cutting persona.

16. The plasma arc cutting system of claim 15 wherein the at least one dial or button is a non-graduated dial.

17. The plasma arc cutting system of claim 15 wherein the control panel further comprises icons indicative of individual cutting personas.

18. The plasma arc cutting system of claim 13 wherein the control panel further comprises a manual override feature that allows a user to adjust settings for at least one of the current, the gas pressure or gas flow rate, or the operational mode manually.

19. The plasma arc cutting system of claim 11, further comprising a control for establishing at least one operational setting of the plasma arc cutting system based on a workpiece thickness.

20. The plasma arc cutting system of claim 11 wherein the user-selectable control is located on the power supply.

21. The plasma arc cutting system of claim 11 wherein the user-selectable control is located on a plasma torch.

22. The plasma arc cutting system of claim 11 wherein the controller comprises a microprocessor or DSP.

23. The plasma arc cutting system of claim 11, further comprising a consumable cartridge that is color coded to correspond to a specific cutting persona.

24. The plasma arc cutting system of claim 11 further comprising a hand held plasma torch.

25. The plasma arc cutting system of claim 11 wherein the plasma cutting system can change the number of predetermined settings based on the cutting persona selected.

26. The plasma arc cutting system of claim 11 wherein the cutting persona further comprises predetermined settings for controlling at least one of a current ramping, a gas ramping, or a pilot arc operation.

27. The plasma arc cutting system of claim 11 wherein the cutting persona further comprises at least one operational setting of the plasma arc cutting system based on a workpiece thickness.

28. An operating persona selector for a plasma arc cutting system, comprising:

a user interface control having a plurality of settings each corresponding to an operating persona; and

a plurality of operating personas enabled with the user interface control, enabling a user to select one of the operating personas via the user interface control from the plurality of operating personas in one action, to minimize operator activity,

each operating persona comprising a set of parameters customized for a particular kind of cut and establishing at least a current, a gas pressure or a gas flow rate, and at least one parameter of an operational mode.

29. The operating persona selector of claim 28 wherein the user interface control further comprises at least one dial or button for selecting a cutting persona.

30. The operating persona selector of claim 29 wherein the at least one dial or button is a non-graduated dial.