Machine tool

Abstract

A machine tool is configured so that a working area in which a workpiece is worked using a tool can be monitored, and includes a cover that is provided to cover the working area, and isolates the inside of the machine tool that includes the working area from the outside, at least one camera that is provided to the inner side of the cover, and captures the inside of the machine tool, and a touch panel that is provided to the cover, wherein the touch panel includes a display panel and an input operation panel, and the display panel displays an image of the inside of the machine tool that has been captured by the at least one camera.

Claims

1. A machine tool comprising a cover that is provided to cover a working area in which a workpiece is worked using a tool, and isolates the inside of the machine tool that includes the working area from the outside, comprising: at least one camera that is provided to the inner side of the cover, and captures the inside of the machine tool; a touch panel that is provided to the cover, the touch panel including a display panel and an input operation panel, and the display panel displaying an image of the inside of the machine tool that has been captured by the at least one camera; a personal computer including an image database that stores data captured by the at least one camera in time series, an operation database that stores operation state display data of the machine tool in time series, and a processor that performs an analysis process using log data stored in the image database and the operation database; and a numerical controller controlled by the personal computer, wherein the display panel is configured to display in an automatic mode to enlarge images of working points of the workpiece captured by the at least one camera automatically one after another in a sequential manner along a sequence of the working points based on a working state acquired from the numerical controller.

2. The machine tool as defined in claim 1, wherein the touch panel is provided to a door that is provided to the cover.

3. The machine tool as defined in claim 2, wherein the entirety of the door is formed using a non-see-through member.

4. The machine tool as defined in claim 1, wherein a display mode of the display panel provided to the touch panel comprises at least a camera capture display mode and a machine tool operation data display mode.

5. The machine tool as defined in claim 4, wherein the at least one camera comprises a plurality of cameras, the camera capture display mode comprises the automatic mode and a manual mode, and in the manual mode, an image captured by an arbitrary camera among the plurality of cameras is selected.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1A illustrates a state in which a door provided with a touch panel has been closed, and FIG. 1B illustrates a state in which the door has been opened.

(2) FIG. 2A illustrates a display example of the entire touch panel in a camera mode, and FIG. 2B illustrates a closeup (zoom-in) display example.

(3) FIG. 3 illustrates an example of an operation data display mode.

(4) FIG. 4 illustrates an example in which a touch panel is provided to part of a see-through window of a door.

(5) FIG. 5 illustrates an example in which a touch panel is provided to an existing door.

(6) FIGS. 6A and 6B illustrate an example in which a camera is provided to the inner side of a door, wherein FIG. 6A illustrates the front side of the door, and FIG. 6B illustrates the inner side of the door.

(7) FIG. 7A illustrates an example in which a main spindle camera is provided to the inner side of a door, and FIG. 7B illustrates the field of view of the main spindle camera.

(8) FIG. 8A illustrates an automatic tool changer (ATC), and FIG. 8B illustrates an example in which a camera is provided to face a tool holder provided in the ATC.

(9) FIG. 9 is a block diagram illustrating a monitoring system of a machine tool.

(10) FIG. 10 illustrates a data log application example.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

(11) A machine tool according to the exemplary embodiments of the invention is described below with reference to the drawings. Note that the invention is not limited to the following exemplary embodiments.

(12) A machine tool 10 illustrated in FIGS. 1A and 1B includes an automatic tool changer (ATC) 14. The machine tool 10 includes a sliding door 11, and an operation panel 13 that is provided in front of the opening-closing area of the door 11.

(13) FIG. 1A illustrates a state in which the door 11 has been closed, and FIG. 1B illustrates a state in which the door 11 has been opened.

(14) The door 11 is provided to cover a working area 15. The door 11 is provided as part of a cover that isolates the inside of the machine tool that includes the working area from the outside.

(15) The working area 15 may include a main spindle 15a that serves as a workpiece support that chucks a workpiece, a tool post (turret) 15b that serves as a tool support that supports a tool such as an edged tool, and a means that relatively moves the workpiece and the tool.

(16) Note that the working means (tool) is not limited to an edged tool. Various other working means may be used.

(17) In the example illustrated in FIG. 1A, a touch panel 12 is provided to the door 11. The touch panel 12 need not be a see-through touch panel. The touch panel 12 may be provided to a frame or a door panel made of a sheet metal or the like.

(18) An opening-closing handle 11a is provided to the door 11.

(19) The camera installation position may be arbitrarily selected taking account of the structure inside the machine tool.

(20) As illustrated in FIG. 6B, a wide-angle camera 16a is provided to the inner side of the door 11 so as to be situated at the center of the door 11 in the rightward-leftward direction. Note that FIG. 6B is an interior view illustrating the door 11 illustrated in FIG. 6A.

(21) An R-side main spindle camera 16b and an L-side main spindle camera 16c are provided on either side of the wide-angle camera 16a. As illustrated in FIG. 7B that is a cross-sectional view taken along the line A-A illustrated in FIG. 7A, these cameras 16b and 16c have a given field of view W around the center O of the main spindle.

(22) A camera 16d that captures the motion of an ATC tool holder 14a that is provided inside the ATC (automatic tool changer) 14 illustrated in FIG. 8A, is also provided (see FIG. 8B).

(23) FIGS. 2A and 2B illustrate an example in which the touch panel 12 has been set to a camera capture display mode.

(24) An image P.sub.1 illustrated in FIG. 2A is an image captured by the wide-angle camera 16a that can capture almost the entirety of the working area 15.

(25) An image P.sub.2 and an image P.sub.4 illustrated in FIG. 2A are respectively an image of the left main spindle and an image of the right main spindle captured by the camera 16b and the camera 16c. An image P.sub.3 illustrated in FIG. 2A is an example of an image of the tool holder 14a of the ATC 14 captured by the camera 16d.

(26) When an icon displayed on the touch panel 12 is operated in this state, the image P.sub.2 is zoomed in, for example. FIG. 2B illustrates a state in which the image P.sub.2 that is used to check the state of a chuck 115a of the main spindle 15a has been zoomed in.

(27) It is possible to check the machine tool in various directions by thus selecting the cameras 16a to 16d when selectively checking each part of the machine tool in a manual mode.

(28) When the machine tool is set to an automatic mode, the camera images are automatically enlarged in a sequential manner along the working points of the workpiece based on the working state acquired from an NC.

(29) When the mode is switched from the camera capture display mode to an operation data display mode by operating an icon displayed on the touch panel 12, the program execution state, various types of sensor information, main spindle information, and the like are displayed in real time together with the camera images (see FIG. 3), for example.

(30) The operation panel of the touch panel 12 can be used in various ways (e.g., can be used to make a note) in addition to changing the mode change and the operation conditions.

(31) FIG. 4 illustrates an example in which the touch panel 12 is provided to part of a see-through window 11b of the door 11. In this case, the working area can be monitored through the see-through window lib of the door 11, and the state of part of the working area that cannot be easily observed through the see-through window 11b can be monitored using the camera image displayed on the touch panel 12.

(32) FIG. 5 illustrates an example in which the touch panel 12 according to the invention is provided to a door 11 of an existing machine tool using a connection member 20.

(33) In this case, a camera is also installed in the working area.

(34) FIG. 9 is a block diagram illustrating the monitoring system of the machine tool 10.

(35) The machine tool 10 includes a numerical control device (NC) 2, and is controlled by a personal computer (PC) 1.

(36) The user inputs the working conditions using the operation panel 13, and the working conditions are displayed on a display 13a.

(37) The touch panel 12 is provided to the front side of the door 11 of the machine tool. As illustrated in FIG. 6, a camera 1 (16a), a camera 2 (16b), and a camera 3 (16c) are provided to the inner side of the door 11.

(38) A camera 4 (16d) is provided to the ATC 14 of the machine tool 11.

(39) The touch panel 12 includes a display panel 12a. The images captured by the cameras 16a to 16d, and operation data (e.g., parameters and sensor information) are displayed on the display panel 12a.

(40) An input operation panel 12b for switching the display mode and the display data is provided integrally with the display panel 12a in the form of an icon, or provided separately from the display panel 12a.

(41) As illustrated in FIG. 10, the PC 1 includes an image database D.sub.p that stores the camera capture data in time series, an operation database D.sub.f that stores the operation state display data of the machine tool in time series, and an analysis section (C.sub.m) that performs an analysis process using the log data.

(42) For example, when it has been found that an abnormality has occurred for some reason, the analysis section (C.sub.m) synchronizes the image at the timing when the abnormality occurred and the state display data in time series, and restores the event that occurred.

(43) The detailed information when the abnormality occurred can be checked by comparing the state (working state) of the tool and the workpiece obtained from the restored image data D.sub.fn with the state display data D.sub.pn, and the cause can be determined smoothly and accurately (see A.sub.c in FIG. 10).

(44) The state display data is not particularly limited.

(45) For example, the following information is displayed.

(46) Machine Operation State

(47) The program number, the execution block of the program, the remaining blocks, and the like obtained from the NC are displayed.

(48) The override, the rotational speed, the load, and the like of the main spindle obtained from the NC are displayed using a meter.

(49) The modal information (e.g., T code and G code) obtained from the NC is displayed.

(50) Sensor Information

(51) The temperature data, the load data, the instantaneous power consumption, and the like are displayed graphically.

(52) Pressure Information

(53) The hydraulic pressure, the chuck pressure, and the like of the pressure unit are displayed using a meter.

(54) Servo Information

(55) The load value, the origin state, the remaining moving amount, the stroke range, the interlock information, and the like are displayed using a meter.