Machine tool control system

• US 7,949,422 B1
• Filed: 06/22/2007
• Issued: 05/24/2011
• Est. Priority Date: 06/22/2007
• Status: Expired due to Fees

• Current Assignee: Fives Landis Corp. (Fives SA)
• Original Assignee: Vermont Machine Tool Corporation
• Inventors: Lauzon, David W., Caron, Philip H., Desbiens, Richard L., Ramen, Jeffrey P., Little, Robby J.
• Primary Examiner(s): Decady; Albert
• Assistant Examiner(s): ROBERTSON, DAVID
• Application Number:
  US11/767,184
• Time in Patent Office: 1,432 Days
• Field of Search: 700/17, 700/83, 700180-182, 715/764, 715/763, 715/771, 717/113
• US Class Current: 700/180
• CPC Class Codes: G05B 19/056 Programming the PLC
• CPC Class Codes: G05B 19/409 characterised by using manual data input [MDI] or by using control panel, e.g. controlling functions with the panel; characterised by control panel details or by setting parameters G05B19/408, G05B19/4093 take precedence

Abstract

A machine tool control system. A machine tool controller is provided to receive commands from an input source and provide control instructions to a machine tool based at least in part on the commands. An operator interface is provided for inputting commands to the controller. The interface includes a display screen having images of individual command functions, the images being selectable on the screen to place into a sequence of command functions selected by an operator. A sequence generator indicates sequential ordering of the command functions represented by the sequence of images on the screen, such that a sequence of images on the screen selected by the operator is translated by the operator controller sequence generator into a sequence of commands to be inputted into the controller. The operator interface may include one or more images each representing a plurality of individual command functions in a defined sequence.

Claims

1. A method of controlling a machine tool comprising:

providing a machine tool controller adapted to receive commands from an input source and provide control instructions to a machine tool based at least in part on the commands;

providing an operator interface for inputting commands to the controller, the interface including a display screen having images thereon of command functions, the command functions including single operations and compound operations having a plurality of single operations in a defined sequence initially provided and visible on a menu portion of the display screen, the images being selectable on the screen to place into a sequence of command functions selected by an operator, the interface further including a sequence generator to indicate sequential ordering of the command functions represented by the sequence of images on the screen;

selecting a plurality of images representing the command functions that the operator desires to have performed by the machine tool, the command functions including at least one compound operation containing a plurality of single operations in a defined sequence;

copying the selected images from the menu portion of the display screen onto a working portion of the screen;

designating a sequence of the images on the working portion of the screen representing the order in which the operator desires the machine tool to perform the selected command functions, the working portion of the screen including an indication that the at least one compound operation contains a defined sequence of single operations without showing in the sequence of images on the working portion of the screen the defined sequence of single operations in the at least one compound operation; and

using the operator controller sequence generator, translating the designated sequence of selected images into a sequence of commands and inputting the sequence of commands into the controller to control the machine tool to perform the selected command functions in the order designated by the operator.

2. The method of claim 1 including indicating on the display screen the designated order of the selected images in the order in which the operator desires the machine tool to perform the selected command functions.

3. The method of claim 1 further including using the sequence generator to generate connector lines visible on the display screen connecting the sequence of selected images in the order designated by the operator.

4. The method of claim 3 wherein the connector lines visible on the display screen avoid images other than the selected images.

5. The method of claim 1 further including providing on the interface display screen a graphical display of one or more operations being executed by the machine, wherein the graphical display of operation sequence is automatically scrolled on the display screen during programmed operation of the commands.

6. The method of claim 1 further including providing on the interface display screen a graphical display of multiple input parameters to the machine tool as a function of time of operation of the machine tool, wherein the time scale is adjustable by the operator.

7. The method of claim 6 wherein the graphical display is a line or bar graph.

8. The method of claim 1 wherein the images of compound operation command functions representing a plurality of single operations in a defined sequence alternately hide and view the defined sequence of single operations in the at least one compound operation, and including selecting the image to hide the defined sequence of single operations and selecting the image to view the defined sequence of single operations in the at least one compound operation.

9. The method of claim 5 further including a compiler, and including using the compiler to convert the sequence of commands to G-code usable by a numerical control module of the machine tool.

10. The method of claim 1 wherein the operator controller sequence generator translates the designated sequence of selected images into a sequence of commands off line from the machine tool.

11. The method of claim 9 wherein the designated sequence of selected images representing the sequence of commands is transmitted to the controller over a network.

12. The method of claim 1 further including creating in a file a history log of machine operation or alarm events, limiting the number and size of each history file and the number of events stored in each history file and, when the number of history files is exceeded, overwriting the oldest history file.

16. The control system of claim 7 wherein the system is further adapted to provide on the interface display screen a graphical display one or more operations being executed by the machine, wherein the graphical display of operation sequence is automatically scrolled on the display screen during programmed operation of the commands.

13. A control system for a machine tool comprising:

a machine tool controller adapted to receive commands from an input source and provide control instructions to a machine tool based at least in part on the commands; and

an operator interface for inputting commands to the controller, the interface including a display screen having images thereon of individual command functions, the command functions including single operations and compound operations having a plurality of single operations in a defined sequence initially provided and visible on a menu portion of the display screen, the images being selectable on a working portion of the screen to place into a sequence of command functions selected by an operator, the working portion of the screen including an indication that the at least one compound operation contains a defined sequence of single operations without showing in the sequence of images on the working portion of the screen the defined sequence of single operations in the at least one compound operation, the interface further including a sequence generator to indicate sequential ordering of the command functions represented by the sequence of images on the screen, whereby a sequence of images on the screen selected by the operator is translated by the operator controller sequence generator into a sequence of commands to be inputted into the controller.

14. The control system of claim 13 wherein the sequence generator is further adapted to generate connector lines visible on the display screen connecting the images in the sequence selected by the operator.

15. The control system of claim 13 wherein the connector lines visible on the display screen avoid images other than the selected images.

17. The control system of claim 13 wherein the system is further adapted to provide on the interface display screen a graphical display of multiple input parameters to the machine tool as a function of time of operation of the machine tool, wherein the time scale is adjustable by the operator.

18. The control system of claim 17 wherein the graphical display is a line or bar graph.

19. The control system of claim 13 wherein the images of compound operation command functions representing a plurality of single operations in a defined sequence alternately hide and view the defined sequence of single operations in the at least one compound operation.

20. The control system of claim 13 further including a compiler adapted to convert the sequence of commands to G-code usable by a numerical control module of the machine tool.

21. The control system of claim 13 wherein the operator controller sequence generator is adapted to translates the designated sequence of selected images into a sequence of commands off line from the machine tool.

22. The control system of claim 13 wherein the operator interface includes an image of a command function having a true-false decision operation, the image of a command function having a true-false decision operation upon insertion into the sequence of command functions generating connector lines visible on the display screen, representing true and false branches, connecting to an image of a command function immediately following the image of the command function having the true-false decision operation, at least one of the connector lines representing true and false branches being movable by the operator from the immediately following command function image to an earlier or later command function image in the designated sequence of images on the screen.

23. A method of controlling a machine tool comprising:

providing a machine tool controller adapted to receive commands from an input source and provide control instructions to a machine tool based at least in part on the commands;

providing an operator interface for inputting commands to the controller, the interface including a display screen having images thereon of command functions, the command functions including single operations and compound operations having a plurality of single operations in a defined sequence, the images being selectable on the screen to place into a sequence of command functions selected by an operator, the interface further including a sequence generator to indicate sequential ordering of the command functions represented by the sequence of images on the screen;

selecting a plurality of images representing the command functions that the operator desires to have performed by the machine tool, the command functions including at least one compound operation containing a plurality of single operations in a defined sequence;

designating a sequence of the images on a portion of the screen representing the order in which the operator desires the machine tool to perform the selected command functions, the screen including an indication that the at least one compound operation contains a defined sequence of single operations without showing in the sequence of images on the working portion of the screen the defined sequence of single operations in the at least one compound operation;

providing on the operator interface an image of a command function having a true-false decision operation;

selecting the image of a command function having a true-false decision operation;

inserting the image of a command function having a true-false decision operation into a designated sequence of images on the screen representing the order of selected command functions;

by default generating connector lines visible on the display screen, representing true and false branches, to connect to an image of a command function immediately following the image of the command function having the true-false decision operation; and

moving at least one of the connector lines representing true and false branches from the immediately following command function image to an earlier or later command function image in the designated sequence of images on the screen; and

using the operator controller sequence generator, translating the designated sequence of selected images into a sequence of commands and inputting the sequence of commands into the controller to control the machine tool to perform the selected command functions in the order designated by the operator.

24. The method of claim 23 wherein at least one of the connector lines representing true and false branches is moved from the immediately following command function image to an earlier command function image in the designated sequence of images on the screen.

25. The method of claim 23 wherein at least one of the connector lines representing true and false branches is moved from the immediately following command function image to a later command function image in the designated sequence of images on the screen.