Working machinery

Abstract

To provide a machine tool that makes it possible to visually confirm the inside of a machining area during work while obtaining, by means of a display, a feeling as if the inside of the machining area is visually confirmed from a window portion provided in a door.SOLUTION: A machine tool 1 has, in a cover body A for separating a machining area from outside, a window portion 2 for visually recognizing the machining area from outside the cover body A. The window portion 2 includes: a transparent window which is translucent; and an image display device configured to be attachable to / detachable from the transparent window. The image display device includes: a camera that captures an image of the machining area; and a transmissive display which is translucent and is capable of displaying the image captured by the camera. The transmissive display is disposed so as to overlap the transparent window, at a position in front of the transparent window, and is configured such that the machining area is visible from the window portion 2. Thus, the above object is achieved by the machine tool 1.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a machine tool, and more particularly to a machine tool having a cover body that separates a machining space from the outside. [Background technology]

[0002] Conventionally, as described in Patent Document 1, for example, a machine tool is known in which a cover body formed in a substantially rectangular box shape has a processing area (meaning an area for processing an object to be processed; the same applies below) inside the cover body, and the cover body has a window. The window is made of a light-transmitting material such as a glass plate, and the processing area can be seen when viewed from outside the cover body.

[0003] Furthermore, Patent Document 2 discloses a machine tool in which a door section connecting the inside and outside of a cover body is provided with a camera for capturing images of the machining area and a display for showing the image captured by the camera, making it possible to view the machining area by the image shown on the display instead of through a window section.

[0004] This gives the worker the feeling as if he or she is looking directly at the processing area through a window in the door, and by using the camera's zoom mechanism and rotation mechanism in all directions, it is possible to check a wider area of ​​the processing area. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2010-194646 A [Patent Document 2] JP 2017-159407 A

[0006] However, the technology described in Patent Document 2 has the disadvantage that the machining area cannot be seen due to problems such as camera failure or dirt adhesion, or the display being turned off. In addition, since the operator cannot directly see the machining area, there are inconveniences such as difficulty in grasping the position, size, and distance of the workpiece when manually operating the machine tool. There is also a need to be able to directly see the machining area during setup work. Summary of the Invention [Problem to be solved by the invention]

[0007] Therefore, the present invention aims to solve such problems and provide a machine tool that allows the operator to get the feeling as if he or she is looking into the machining area through the window by using a display in the window, and also allows the operator to directly view the machining area if necessary. [Means for solving the problem]

[0008] In order to achieve the above object, the first invention provides: A machine tool having a cover body separating a machining area from the outside, the cover body having a window portion for visually checking the machining area from the outside, the window portion includes a transparent window having translucency and an image display device configured to be detachably attached to the transparent window, the image display device includes a camera that captures an image of the processing area, and a translucent display that is translucent and capable of displaying an image captured by the camera; The present invention provides a machine tool, characterized in that the see-through display is disposed in front of and overlapping with the transparent window, and configured so that the machining area can be visually observed through the window portion.

[0009] According to the first aspect of the present invention, the image display device provided in the window has a transparent display capable of displaying an image captured by a camera, so that the user can feel as if he or she is looking into the processing area through the window, and further, the processing area can be directly viewed as necessary. In addition, the image display device is detachably attached to the transparent window, so that maintenance and replacement are easy.

[0010] The second invention has the same configuration as the first invention, as well as: The image display device further includes a frame member interposed between a light-transmitting front protective plate disposed on the front side of the transmissive display and the transparent window, and having an arrangement space for the transmissive display and the camera formed therein; The camera is fixed to the front surface of the transparent window.

[0011] According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, The transparent display can be protected from dirt and impacts, and the transparent window effectively prevents the camera from becoming dirty.

[0012] The third invention has the same configuration as the second invention, but further comprises: A control device is further provided for processing and editing the captured image captured by the camera so that the captured image can be displayed on the transparent display. The control device is characterized in that, in response to an operation of an operation unit that accepts various operations from an operator, a part of the captured image to be displayed on the transmissive display is enlarged and displayed.

[0013] According to the third invention, in addition to the effects of the second invention, the invention further includes a control device that processes and edits the image captured by the camera and enables it to be displayed on the transparent display. This makes it possible to enlarge and reduce the captured image and display various information, thereby greatly improving convenience for the worker. Effect of the Invention

[0014] According to the present invention, a machine tool can be provided that allows the user to feel as if he or she is looking into the machining area through the window display, and also allows the user to directly view the machining area if necessary. [Brief description of the drawings]

[0015] [Figure 1] 1 is a schematic configuration diagram of a machine tool according to an embodiment of the present invention; [Diagram 2] 2 is a vertical cross-sectional side view of the window portion of FIG. 1. [Diagram 3] FIG. 3 is a perspective view of the image display device of FIG. 2. [Figure 4] FIG. 3 is an exploded perspective view of the image display device of FIG. 2. [Diagram 5] 2 is a control block diagram illustrating a connection state of the control device in FIG. 1 and a controlled object. [Figure 6] 3 is a schematic explanatory diagram showing a display example of the image display device of FIG. 2 in a processing region display mode. FIG. [Figure 7] 3 is a schematic explanatory diagram showing a display example of the image display device of FIG. 2 in a virtual image synthesis mode. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] A detailed description of preferred embodiments of the present invention will be given below with reference to the accompanying drawings. First, a basic configuration of a machine tool 1 according to an embodiment of the present invention will be described below. For convenience of explanation, in the following description, the front side of the machine tool 1 shown in FIG. 1 will be referred to as the front, the opposite side as the back, the right side as viewed from the page will be referred to as the right hand, and the left side as viewed from the page will be referred to as the left hand.

[0017] <Basic configuration of machine tools> FIG 1 is a schematic diagram of a machine tool 1 according to an embodiment of the present invention. Specifically, the machine tool 1 according to this embodiment is a machining center. However, the scope of the present invention is not limited to this. For example, the present invention can also be applied to multi-tasking machines, lathes, grinding machines, etc.

[0018] The machine tool 1 is equipped with a cover body A, an openable and closable door section B, and a control device C. The cover body A has a processing area R (not shown in FIG. 1) in the inner space partitioned by the cover body A, and serves to separate the processing area R from the outside. A door section B that connects the inside and outside of the cover body A is disposed on the front side. A control device C is disposed in front of the cover body A and to the side of the door section B. The location at which the control device C is disposed is not limited to the illustrated example, and it may be a separate unit from the cover body A.

[0019] The door section B is provided with a window section 2 through which an operator can view the processing area R from the outside (i.e., outside the cover body A). The door section B is configured to be able to be opened and closed by gripping and pulling the handle section b1. The door section B may also be configured to be able to be opened and closed by sliding it left and right. When the door section B is in the open state, the processing area R is in communication with the outside of the cover body A, and when it is in the closed state, it is cut off from the outside. The door section B is also provided with a door sensor b2 at an appropriate location for detecting the open / closed state (i.e., whether it is in the open state or the closed state).

[0020] <Window configuration> Fig. 2 is a vertical cross-sectional side view of the window portion 2 of Fig. 1. Fig. 3 is a perspective view of the image display device of Fig. 2, and Fig. 4 is an exploded perspective view of the image display device of Fig. 2. 2, the window section 2 includes an image display device 3 capable of displaying an image, and a transparent window 4 having light-transmitting properties, and the image display device 3 is configured to be detachable from the transparent window 4, which allows for easy maintenance and replacement. The image display device 3 is attached and fixed to the transparent window 4 by, for example, a transparent adhesive.

[0021] The transparent window 4 is a plate-like member formed by bonding a polycarbonate plate 41 on the front side and a glass plate 42 on the back side, and is fitted and fixed in an opening formed in the cover body A. The transparent window 4 is not limited to the above configuration as long as it is formed of a transparent plate-like member having impact resistance. The window portion 2 has a rectangular shape when viewed from the front, but can also be a shape other than a rectangle (for example, a substantially square shape or a circular shape). The image display device 3 and the transparent window 4 can also be formed integrally (i.e., not easily detachable). The polycarbonate plate 41 has impact resistance and functions to protect the back of the image display device 3 from impact.

[0022] As shown in FIGS. 2 and 3, the image display device 3 includes a front protection plate 31, a transmissive display 32, a rectangular frame portion 33, and a camera .

[0023] The front protective plate 31 is a rectangular plate member having translucency, and is made of a glass material. This front protective plate 31 functions to protect the front surface of a later-described transmissive display 32 from impact and dirt. In addition, a black print 31a is applied to the lower part of the back surface (back side) of the front protective plate 31 to hide a later-described base 32a, thereby improving the design effect.

[0024] The transparent display 32 is a rectangular image display panel having translucency, and serves to display various images in the window portion B. As shown in Fig. 3, the transparent display 32 is disposed in the rectangular frame portion 33 such that the front side is covered by the front protective plate 31. The transparent display 32 is formed with dimensions such that the upper edge and the left and right edges do not create gaps between the transparent display 32 and the rectangular frame portion 4.

[0025] More specifically, this transmissive display 32 is formed by a transparent organic EL display, and has a high light transmittance by providing transparent pixels in the organic EL layer and by forming the electrode layer in a mesh pattern so as not to cover the entire organic EL layer.

[0026] The transparent display 32 is capable of displaying an image of the processing area R captured by a camera 34, which will be described later, in response to an output signal from a control device C, which will be described later. Furthermore, various images can be displayed in accordance with the output signal, in addition to the image of the processing area R. As a result, it is possible to display an image on the entire screen, or on a partial area of ​​the screen. Furthermore, in addition to images, it is also possible to display, for example, various setting screens, characters, lines, etc.

[0027] The see-through display 32 is formed in a rectangular shape to match the shape of the transparent window 4, and is disposed so as to overlap in front of the transparent window 4. Also, it is attached to the front protective plate 31 without any gaps so as to abut against it. As a result, the captured image of the processing area R is displayed on the entire screen of the see-through display 32, and when the worker looks into the window portion 2, the worker can observe the processing area R from the displayed captured image with a feeling as if he or she is actually looking at the processing area R through the transparent window 4. Note that the captured image of the processing area R displayed on the see-through display 32 is desirably updated at a predetermined time interval (for example, 0.5 seconds) to improve the feeling of looking. In addition, since the inside of the transparent window 4 may be soiled with cooling water or cutting chips, which may deteriorate visibility, an air blower driven and controlled by the control device C may be provided at an appropriate location on the inside of the machine, and may be configured to blow air toward the camera 34. In addition, in order to improve maintainability, measures such as attaching a rotating window to an appropriate location of the image display device 3 or the cover body A may be taken.

[0028] On the other hand, when no image is displayed on the transparent display 32 (hidden), the front protective plate 31, the transparent display 32, and the rear protective plate 34 described later are all translucent, so that the worker can actually see the processing area R by looking through the window portion 2.

[0029] The base 32a is fixed to the bottom of the transparent display 32 and serves the function of converting an output signal transmitted from the control device C described later via the wiring 32b into a video signal for the transparent display 32 and displaying various images on the transparent display 32.

[0030] The rectangular frame 33 is a rectangular frame member made of a hard resin material. The rectangular frame 33 is attached to the transparent window 4 and is interposed between the front protective plate 31 and the transparent window 4 to function as a spacer, and an arrangement space Sp is formed therein for arranging the see-through display 32, the camera 34, and the board 32a.

[0031] Furthermore, a camera 34 is adhered and fixed to the front surface of the transparent window 4. As a result, the transparent window 4 is configured to effectively prevent the camera 34 from becoming dirty when the machine tool 1 is in operation.

[0032] The camera 34 is capable of capturing an image of the processing area R. The camera 34 is equipped with a rotation mechanism and a zoom mechanism (not shown), and is configured so that the image capturing direction can be changed up, down, left, and right by the rotation mechanism, and the captured image can be enlarged and reduced by the zoom mechanism. The control device C is capable of controlling the image capturing direction of the camera 34 and the enlargement and reduction of the captured image, and the rotation mechanism and the zoom mechanism are configured to receive operation instruction information instructing these operations (drives) from the control device C and to be remotely operated. Also, information on the captured image of the processing area R captured by the camera 34 (hereinafter referred to as image information) is transmitted to the control device C (described later) by wired or wireless communication.

[0033] <Control device configuration> Fig. 4 is a control block diagram for explaining the connection state and the controlled object of the control device C in Fig. 1. Although not shown, this control device C is configured with a CPU that performs arithmetic processing and a memory that can read and write information required for the arithmetic processing, and the configuration described as functional blocks in Fig. 4 is realized by the CPU operating according to various control programs stored in the memory.

[0034] 4, the control device C has a camera 34 and a door sensor b2 connected to its input side, and a board 32a and a transparent display 32 connected to its output side, enabling transmission and reception of various information. It also has an operation unit c1 as an input interface for accepting various operations, and a display unit c2 as an output interface for displaying various information.

[0035] The control device C acquires imaging information from the camera 34, and transmits output information instructing the output of the captured image to the transparent display 32. At this time, the control device C can also process and edit the captured image before outputting it. This makes it possible to enlarge or reduce the captured image and display various information, greatly improving the convenience of the worker. In addition, the image display device 3 is equipped with a contact detection sensor (not shown) on the front surface, and can also accept operations as a touch panel.

[0036] The display unit c2 can display various setting screens, and is made up of, for example, a liquid crystal display. By operating the operation unit c1, it is possible to manually operate various settings related to the tool T, change the imaging direction of the camera 35, and enlarge / reduce the captured image while checking the display unit c2. The same operations are also possible on the image display device 3.

[0037] The control device C has a plurality of different display modes that determine the display contents of the transparent display 32. In detail, the control device C has a processing area display mode p1, a virtual image synthesis mode p2, a setting screen display mode p3, and a non-display mode p4, which are configured as programs executable by the control device C and can be selectively executed by operating the operation unit c1, for example. The same operation can also be performed on the image display device 3.

[0038] Fig. 6 is a schematic explanatory diagram showing a display example of the image display device 3 in Fig. 2 in the machining area display mode p1. In Fig. 6 (also in Fig. 7), the machining area R is shown as an example, with T being a tool and W being a workpiece.

[0039] As shown in FIG. 6, when the machining area display mode p1 is executed, the image captured by the camera 34 is displayed on the entire screen of the transparent display 32. This allows the worker to feel as if he is viewing the inside of the machining area R through the window 2 provided in the door B. In addition, the captured image displayed on the transparent display 32 can be enlarged as needed by operating the operation unit c1, for example, like a magnifying glass to enlarge a predetermined range d1, or can display text information d2 indicating the working state of the tool T. The position, range, magnification rate, etc. of the predetermined range d1 can be changed as appropriate by operating the operation unit c1. This improves the convenience of the worker.

[0040] In addition, the operator can adjust and set the display position of the captured image displayed on the transparent display 32 up, down, left, right, and zoom in and out by operating the operation unit c1 while comparing the real image of the processing area R with the captured image displayed on the transparent display 32. During this setting, it is desirable that the captured image displayed on the transparent display 32 blinks or has improved translucency. This allows the operator to set the captured image displayed on the transparent display 32 to be closer to the state in which the inside of the processing area R is actually viewed through the window 2 by setting the real image of the processing area R and the captured image displayed on the transparent display 32 to overlap with each other visually.

[0041] FIG. 7 is a schematic explanatory diagram showing a display example of the image display device 3 of FIG. 2 in the virtual image synthesis mode p2. As shown in FIG. 7, when the virtual image synthesis mode p2 is executed, the captured image of the camera 34, various setting information, character information, etc. are displayed in a partial area of ​​the screen of the transparent display 32. In the other area where the image is not displayed, the processing area R can be viewed. In the illustrated example, an enlarged image d3 in which a part of the captured image is enlarged like a magnifying glass, character information d4 indicating the working state of the tool T, and setting information d5 of the tool T are displayed on the transparent display 32. The position, range, magnification ratio, etc. of the enlarged image d3 can be appropriately changed by operating the operation unit c1. In addition, the display / non-display of the character information d4 and the setting information d5 can also be changed.

[0042] According to the virtual image synthesis mode p2, when the worker looks through the window portion 2, he or she can observe the processing area R while obtaining the visual effect of a virtual image (image) displayed on the translucent display 32 being superimposed on the real image of the processing area R. Therefore, by displaying various information, the convenience of the worker during work can be improved.

[0043] The setting screen display mode p3 is a mode in which various setting information is displayed on the image display device 3, for example, setting information of the tool T is displayed. The non-display mode p4 is a mode in which all image display on the transparent display 32 of the image display device 3 is hidden, and this allows the worker to actually see the machining area R by looking through the window 2. Note that the control device C may be configured to automatically switch to the non-display mode p4 regardless of the operation of the operation unit c1 when the door sensor b2 detects that the door B is open. This automatically hides the transparent display 32 during setup work, making it easier for the worker to directly see the machining area R, thereby improving convenience.

[0044] The embodiment of the present invention has been described above. The present invention is not limited to the above embodiment. It goes without saying that the present invention can be modified appropriately within the scope of the technical concept. [Explanation of symbols]

[0045] 1 Machine tools 2 Window section 3 Image display device 4 Transparent window 31 Front protection plate 32 Transparent Display 33 Rectangular frame 34 Camera A Cover body B Door section b1 Handle b2 Door sensor C Control device c1 Operation section c2 Display section

Claims

1. A machine tool having a cover body separating a machining area from the outside, the cover body having a window portion for visually checking the machining area from the outside, the window portion includes a transparent window having translucency and an image display device configured to be detachably attached to the transparent window, the image display device includes a camera that captures an image of the processing area, and a translucent display that is translucent and capable of displaying an image captured by the camera; The see-through display is disposed in front of and overlapping with the transparent window, and is configured so that the processing area can be viewed through the window portion; The image display device further includes a frame member interposed between a light-transmitting front protective plate disposed on the front side of the transmissive display and the transparent window, and having an arrangement space for the transmissive display and the camera formed therein; A machine tool, characterized in that the camera is fixed to the front surface of the transparent window.

2. A control device is further provided for processing and editing the captured image captured by the camera so that the captured image can be displayed on the transparent display.

2. The machine tool according to claim 1, wherein the control device enlarges and displays a portion of the captured image displayed on the transmissive display in response to an operation of an operation unit that accepts various operations from an operator.

Images