Numerical control system

• US 20060173572A1
• Filed: 03/17/2003
• Published: 08/03/2006
• Est. Priority Date: 03/17/2003
• Status: Active Grant

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Takeyama, Toru, Kamiya, Hirohusa, Sagasaki, Masakazu
• Granted Patent: US 7,548,795 B2
• Time in Patent Office: Days
• US Class Current: 700/181
• CPC Class Codes: G05B 19/4155 characterised by programme execution, i.e. part programme or machine function execution, e.g. selection of a programme
• CPC Class Codes: G05B 2219/36095 Inhibit or permit override by program instruction
• CPC Class Codes: G05B 2219/43158 Feedrate override
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing
• CPC Class Codes: Y10S 707/99948 Application of database or data structure, e.g. distributed, multimedia, or image
• CPC Class Codes: Y10S 715/961 Operator interface with visual structure or function dictated by intended use

Abstract

A numerical control system using converted data can be obtained, in which, when an operator desires to change the feed rate by speed override and the like, when the operator-desires to change the operation of the machine according to the content of variable data, or when the operator desires to change workpiece offset data during machining operation, such a change can be quickly made.

For this purpose, the numerical control system includes a machining-program/internal-processing conversion means (502) for allocating during conversion a command in a machining program to an application program for the numerical control apparatus, a variable/offset conversion means (504) for setting during conversion, with respect to a command such as a variable command and a tool offset command in the machining program, only referencing information for the command, and a conversion data executing means (900) for directly executing, during machining program execution, the internal processing sequentially based on data allocated by the conversion means (502, 504).

Claims

1-12. -12. (canceled)

13. A numerical control system comprising:

a conversion means for pre-generating data for allocating commands in a machining program to internal processing of a numerical control apparatus, and for storing the data in memory; and

a conversion data executing means for using the data generated by the conversion means and pre-stored in the memory to directly execute the internal processing in sequence, without performing processing for allocating the commands in the machining program to internal processing of the numerical control apparatus, when the machining program is executed to control a control object.

14. A numerical control system according to claim 13, wherein when a command in the machining program is a G code or an MSTB command, the conversion means sets in a table provided in memory a numerical-control-apparatus internal processing address, and a parameter, for said machining-program command.

15. A numerical control system according to claim 13, wherein when a command in the machining program is a variable command or an offset command, the conversion means sets in a table provided in memory a numerical-control-apparatus internal processing address and a numerical-control-apparatus referencing address.

17. A numerical control system according to claim 13, further comprising an I/O signal notifying means for detecting a system-operator-working signal, and notifying the internal processing of a condition in accordance with a content of the signal.

18. A numerical control system according to claim 13, further comprising a conversion data judging means for judging, during a run of the machining program, whether converted data is present, and for requesting the conversion data executing means to execute the converted data if the converted data is present.

20. A numerical control system according to claim 17, further comprising a conversion data judging means for judging, during a run of the machining program, whether converted data is present, and for requesting the conversion data executing means to execute the converted data if the converted data is present.

21. A numerical control system according to claim 13, further comprising a conversion-target-program judging means for discriminating an instruction indicating conversion enable/disable written in the machining program, and for requesting the conversion means to convert only machining programs that include a conversion-enable instruction.

23. A numerical control system according to claim 17, further comprising a conversion-target-program judging means for discriminating an instruction indicating conversion enable/disable written in the machining program, and for requesting the machining-program/internal-processing conversion means and the variable/offset conversion means to convert only machining programs that include a conversion-enable instruction.

24. A numerical control system according to claim 13, further comprising:

a conversion program selecting means for displaying on a display a machining program list and selecting a program to be converted from the machining program list; and

a conversion-target-program judging means for referring to the data selected by the conversion program selecting means, and for requesting the conversion means to convert only machining programs that include a conversion-enable instruction.

26. A numerical control system according to claim 17, further comprising:

a conversion program selecting means for displaying on a display a machining program list and selecting a program to be converted from the machining program list; and

a conversion-target-program judging means for referring to the data selected by the conversion program selecting means, and for requesting the machining-program/internal-processing conversion means and the variable/offset conversion means to convert only machining programs that include a conversion-enable instruction.

27. A numerical control system according to claim 13, further comprising a conversion result listing means for displaying on a display conversion results as a list.

29. A numerical control system according to claim 17, further comprising a conversion result listing means for displaying on a display conversion results as a list.

30. A numerical control system according to claim 13, further comprising a conversion error display means for displaying on a display detailed information on conversion errors.

32. A numerical control system according to claim 17, further comprising a conversion error display means for displaying on a display detailed information on conversion errors.

33. A numerical control system according to claim 13, further comprising a power-on machining-program-conversion activating means for activating the conversion means at system power-on.

35. A numerical control system according to claim 17, further comprising a power-on machining-program-conversion activating means for activating the machining-program/internal-processing conversion means and the variable/offset conversion means at system power-on.

36. A numerical control system according to claim 13, further comprising a machining-program-conversion activating means for activating the conversion means by input of a PLC signal.

38. A numerical control system according to claim 17, further comprising a machining-program-conversion activating means for activating the machining-program/internal-processing conversion means and the variable/offset conversion means by input of a PLC signal.

16. A numerical control system comprising:

a machining-program/internal-processing conversion means for, when a command in a machining program is a G code or an MSTB command, setting and storing in a table provided in memory a numerical-control-apparatus internal processing address, and a parameter, for said machining-program command;

a variable/offset conversion means for, when a command in the machining program is a variable command or an offset command, setting and storing in the table provided in the memory a numerical-control-apparatus internal processing address, and a numerical-control-apparatus referencing address, for said machining-program command; and

a conversion data executing means for using data generated, and pre-stored in the memory, by the machining-program/internal-processing conversion means and the variable/offset conversion means, to directly execute the internal processing in sequence, without performing processing for allocating the commands in the machining program to internal processing of the numerical control apparatus, when the machining program is executed to control a control object.

19. A numerical control system according to claim 16, further comprising a conversion data judging means for judging, during a run of the machining program, whether converted data is present, and for requesting the conversion data executing means to execute the converted data if the converted data is present.

22. A numerical control system according to claim 16, further comprising a conversion-target-program judging means for discriminating an instruction indicating conversion enable/disable written in the machining program, and for requesting the machining-program/internal-processing conversion means and the variable/offset conversion means to convert only machining programs that include a conversion-enable instruction.

25. A numerical control system according to claim 16, further comprising:

a conversion program selecting means for displaying on a display a machining program list and selecting a program to be converted from the machining program list; and

a conversion-target-program judging means for referring to the data selected by the conversion program selecting means, and for requesting the machining-program/internal-processing conversion means and the variable/offset conversion means to convert only machining programs that include a conversion-enable instruction.

28. A numerical control system according to claim 16, further comprising a conversion result listing means for displaying on a display conversion results as a list.

31. A numerical control system according to claim 16, further comprising a conversion error display means for displaying on a display detailed information on conversion errors.

34. A numerical control system according to claim 16, further comprising a power-on machining-program-conversion activating means for activating the machining-program/internal-processing conversion means and the variable/offset conversion means at system power-on.

37. A numerical control system according to claim 16, further comprising a machining-program-conversion activating means for activating the machining-program/internal-processing conversion means and the variable/offset conversion means by input of a PLC signal.

39. A numerical control system according to claim 16, further comprising an I/O signal notifying means for detecting a system-operator-working signal, and notifying the internal processing of a condition in accordance with a content of the signal.