METHOD AND SYSTEM FOR INTEGRATED CONTROL OF MACHINE OPERATIONS

• US 20100030348A1
• Filed: 07/30/2008
• Published: 02/04/2010
• Est. Priority Date: 07/30/2008
• Status: Abandoned Application

• Current Assignee: Fanuc FA America Corporation (Fanuc Corporation)
• Original Assignee: GE Fanuc Intelligent Platforms Incorporated (Emerson Electric Company)
• Inventors: Scherer, Jerry Gene
• Application Number:
  US12/182,397
• Publication Number:
  US 20100030348A1
• Time in Patent Office: Days
• US Class Current: 700/70
• CPC Class Codes: G05B 19/4062 Monitoring servoloop, e.g. overload of servomotor, loss of feedback or reference
• CPC Class Codes: G05B 2219/42295 Detect augmenting torque of drive motor
• CPC Class Codes: G05B 2219/42309 Excess in speed
• CPC Class Codes: G05B 23/0235 based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold

Abstract

A method and system for a machine tool system are provided. The system includes a spindle, one or more sensor devices configured to determine a value of an operating parameter of the system, and a software application embedded within a control program of the machine tool system. The software application includes a process controller integration module configured to receive the determined operating parameter value from the sensor device, compare the operating parameter value to a predetermined allowable range, and generate one or more alerts using the comparison. The software application also includes a GUI interface module configured to display the alerts in at least one of a graphical and a textual form on a display of the machine tool system. The GUI interface module is further configured to communicate user inputs to the process controller integration module and receive information for user displays from the process controller integration module.

Claims

1. A machine tool system comprising:

a spindle configured to rotate about an axis, said spindle configured to receive a tool head interchangeably therein;

one or more sensor devices configured to determine a value of an operating parameter of the system that includes at least one of a speed of rotation of the spindle and a torsional load on the spindle;

a software application embedded within a control program of the machine tool system, said software application comprising;

a process controller integration module communicatively coupled to said sensor device through an input output device of the machine tool system, said process controller module configured to;

receive the determined operating parameter value from the sensor device;

compare the operating parameter value to a predetermined allowable range; and

generate one or more alerts using the comparison; and

a GUI interface module communicatively coupled to said process controller integration module, said GUI interface module configured to display the one or more alerts in at least one of a graphical and a textual form on a display of the machine tool system, said GUI interface module further configured to communicate user inputs to said process controller integration module and receive information for user displays from said process controller integration module.

2. A system in accordance with claim 1 wherein said sensor device is configured to determine an electrical power input to a motor drive coupled to said spindle.

3. A system in accordance with claim 1 wherein said sensor device is configured to determine a value of an operating parameter that includes at least one of a flow of a coolant to a tool head coupled to the spindle, a temperature of the flow of the coolant, and a temperature of an interface between the tool head and a workpiece.

4. A system in accordance with claim 3 wherein said process controller module is further configured to compare at least one of the flow of the coolant, the temperature of the flow, and the temperature of the interface to a respective predetermined allowable range for the determined operating parameter.

5. A system in accordance with claim 1 wherein said process controller module is further configured to compare at least one of the speed of rotation of the spindle to a predetermined allowable range for the speed of rotation of the spindle and the torsional load on the spindle to a predetermined allowable range for the torsional load on the spindle.

6. A system in accordance with claim 1 wherein said process controller module is further configured to generate one or more alerts using the comparison and a predetermined time period that the operating parameter value is outside the respective predetermined allowable range for that operating parameter value.

7. A system in accordance with claim 1 wherein the one or more alerts includes a signal that initiates a shutdown of the machine tool system.

8. A system in accordance with claim 1 wherein the one or more alerts includes a signal that annunciates a warning.

9. A system in accordance with claim 1 wherein the user displays are generated by the GUI and are configured to be displayed using an output device of the machine tool system.

10. A method of controlling a machining operation on a workpiece by a machine tool using an application embedded within a controller of the machine tool, said method comprises:

receiving an operating parameter of the machine tool from a machine tool sensor by the application embedded within a controller of the turning tool;

comparing in the embedded application, the received operating parameter to at least one of a respective first predetermined allowable range and a second predetermined allowable range;

generating by the embedded application, a first alert if the received operating parameter exceeds the first predetermined allowable range for a first predetermined period of time; and

outputting the first alert through a resource of the machine tool.

11. A method in accordance with claim 10 wherein the machine tool includes a rotatable spindle and wherein receiving an operating parameter of the machine tool comprises receiving at least one of a speed of the spindle, a load on the spindle due to the machine operation, and a flow of coolant to at least one of the machine tool and the workpiece;

12. A method in accordance with claim 10 wherein comparing the received operating parameter comprises comparing at least one of a speed of a spindle of the machine tool, a load on the spindle due to the machine operation, and a flow of coolant to at least one of the machine tool and the workpiece to a respective predetermined allowable range.

13. A method in accordance with claim 10 further comprising operating a timer while the received operating parameter exceeds the at least one of a respective first predetermined allowable range and a second predetermined allowable range.

14. A method in accordance with claim 10 further comprising generating a second alert if the received operating parameter exceeds the second predetermined allowable range for a second predetermined period of time.

15. A method in accordance with claim 10 wherein receiving an operating parameter of the machine tool comprises receiving the operating parameter through an input of the controller by a monitoring application executing on the controller.

16. A method in accordance with claim 10 wherein outputting at least one of the first and second alert comprises outputting the at least one of the first and the second alert on a display screen of the controller using a graphical user interface (GUI) executing on the controller.

17. A computer program embodied on a computer-readable medium, said computer program comprising a code segment that configures a processor to control a machining operation on a workpiece by a machine tool wherein the code segment executes as an application embedded within a controller of the machine tool, said code segment further configures the processor to:

receive an operating parameter of the machine tool from a machine tool sensor by the application embedded within a controller of the turning tool;

compare in the embedded application, the received operating parameter to at least one of a respective first predetermined allowable range and a second predetermined allowable range;

generate by the embedded application, at least one of a first alert if the received operating parameter exceeds the first predetermined allowable range for a first predetermined period of time and a second alert if the received operating parameter exceeds the second predetermined allowable range for a second predetermined period of time; and

output at least one of the first alert and the second alert through a resource of the machine tool.

18. A computer program in accordance with claim 17 wherein the machine tool includes a spindle rotatable about an axis and a tool head coupled to the spindle and configured to engage a workpiece, the machine tool further includes a source of coolant flow to an interface between the tool head and the workpiece, the computer program further comprising at least one code segment that configures the processor to receive an operating parameter including at least one of a spindle rotation speed, a spindle load, and a coolant flow from a machine tool sensor associated with the operating parameter.

19. A computer program in accordance with claim 17 wherein the computer program further comprises at least one code segment that configures the processor to accumulate the received operating parameters over a predetermined third period of time and to communicate the accumulated data through a graphical user interface for generation of a production report.

20. A computer program in accordance with claim 17 wherein the computer program further comprises at least one code segment that configures the processor to receive user inputs for one or more of the first predetermined allowable range, the first predetermined period of time, the second predetermined allowable range, the second predetermined period of time, and the third predetermined period of time.