JP2020059068A - Machine tool with projector - Google Patents

Abstract

To provide a machine tool with a projector which can perform high accurate measurement while assuring a wide visual field.SOLUTION: A machine tool with a projector, which has a projector capable of enlarging and projecting a work-piece, comprises: first enlargement means which enlarges a part of a projection image projected on a projection screen of a projector; and second enlargement means which displays a part of the projection image in an enlarged region of the first enlargement means at magnification higher than that of the first enlargement means. The first enlargement means comprises, for example, an optical loupe which is spaced apart so as to face the projection screen. The second enlargement means comprises, for example, a camera for capturing a part of the projection image.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a machine tool with a projector having a projector capable of enlarging and projecting a workpiece (work), and particularly to an optical copying grinder.

  BACKGROUND ART Conventionally, an optical copying grinding machine is known as a machine tool with a projector having a projector capable of enlarging and projecting a workpiece. In a conventional optical copying grinding machine, a chart paper on which a shape (desired shape) of a work to be ground is drawn is arranged on a projection screen, and a projection image of the work and / or a grindstone is projected on the projection screen. With this, it is possible to grind the work so that these shapes match while simultaneously viewing the projected image on the projection screen and the desired shape of the chart paper. (Patent Document 1, etc.).

  Further, in a conventional optical profile grinding machine, it is also possible to perform grinding by automatic control by operating the grinding wheel and / or the work based on a processing program that matches the desired shape of the work (Patent Document 1). 2 etc.). As a method of creating such a processing program, for example, the projection image of the grindstone and the desired shape of the chart paper are simultaneously copied on the projection screen, and the grindstone position is taught along the contour of the desired shape of the chart paper (measurement and registration). The so-called teaching playback method, which creates a machining program by doing so, is known.

  In such a conventional optical profile grinding machine, it is basically necessary to visually observe the projected image on the projection screen both when performing the grinding process and when creating the machining program, and therefore a large error occurs. However, there is a problem that high-precision measurement is difficult. Therefore, in the optical copying grinding machine of Patent Document 1, an image processing apparatus for photographing and displaying the ground portion of the workpiece in an enlarged manner is provided separately from the projection screen, whereby a wide field of view by the projection screen and the image processing apparatus are provided. It is configured to be compatible with high precision measurement.

JP-A-08-197405 Japanese Patent No. 6216656

  In recent years, processed products such as mold parts and tools have become more and more miniaturized and highly accurate, and along with this, optical copying grinding machines are required to perform grinding processing in micron units and work shape measurement. . According to the optical profile grinding machine of Patent Document 1, it is possible to observe the shape of the work in micron units by setting the magnification of the image processing apparatus to a high value. However, in the optical copying grinder of Patent Document 1, when the magnification of the image processing apparatus is increased to the extent that it can be observed in units of micron, the field of view becomes extremely narrow, and the entire projected image is projected on the projection screen. However, there is a problem in that it is difficult to understand which part of the work the enlarged image displayed on the image processing device is to be observed. In addition, since the magnified image displayed on the image processing device changes greatly just by moving the work minutely to change the observation part of the work, it is easy to lose sight of the observation part, and the alignment of the observation part by the image processing device can be easily performed. There is a problem that it is difficult.

  Therefore, an object of the present invention is to provide a machine tool with a projector capable of performing highly accurate measurement while ensuring a wide field of view.

  In order to achieve the above-mentioned object, a machine tool with a projector according to the present invention is a machine tool with a projector having a projector capable of enlarging and projecting a workpiece. First magnifying means for magnifying a part of the projected image projected on the screen, and a part of the projected image in the magnified area of the first magnifying means are displayed at a higher magnification than the first magnifying means. And a second expanding means.

  In the machine tool with a projector according to the present invention, the first enlarging means may include an optical loupe provided so as to be opposed to the projection screen.

  In the machine tool with a projector according to the present invention, the second enlarging means may include a camera that captures a part of the projected image.

  In the machine tool with a projector according to the present invention, the first magnifying means includes an optical loupe provided so as to be opposed to the projection screen, and the second magnifying means includes a part of the projected image. It is preferable that a camera for photographing is provided, the optical loupe is configured to be movable on the projection screen, and the camera is configured to be movable on the projection screen integrally with the optical loupe.

  The machine tool with a projector according to the present invention further comprises a beam splitter provided between the projection screen and the optical loupe, and the second enlarging means is a part of the projection image through the beam splitter. May be configured to be photographable.

  In the machine tool with a projector according to the present invention, the first enlarging means displays a camera function capable of capturing a part of the projection image projected on the projection screen and a captured image captured by the camera function. The second enlarging means obtains the photographed image from the first enlarging means, and the second enlarging means obtains the photographed image at a higher magnification than the photographed image displayed by the first enlarging means. It may be configured to be able to display a part.

  Further, in the machine tool with a projector according to the present invention, the second enlarging means displays a part of the projected image in the enlarging area of the first enlarging means at a higher magnification than the first enlarging means. The image data of the desired shape may be displayed on the display so that the desired shape of the workpiece and the projected image on the display can be viewed at the same time.

  In this case, the second enlarging means is configured to be able to move the projection image on the display, and the image data of the desired shape is displayed on the display in accordance with the movement of the projection image. It is preferably configured to be movable above.

  Further, the machine tool with a projector according to the present invention can arrange the chart paper on which the desired shape is drawn so that the desired shape of the workpiece and the projected image on the projection screen can be visually recognized at the same time. May be configured as.

  The machine tool with a projector according to the present invention may be an optical copying grinding machine having a grindstone capable of grinding a workpiece.

  According to the present invention, it is possible to provide a machine tool with a projector capable of performing highly accurate measurement while ensuring a wide field of view.

It is a figure which shows roughly the whole structure of the optical copying grinding machine which concerns on one Embodiment of this invention. It is a figure which shows roughly the optical structure of the optical copy grinding machine which concerns on this embodiment. It is a figure which shows schematic structure of an optical loupe. It is a figure which shows schematic structure of a photography display means. FIG. 5A is a diagram showing a projected image projected on the projection screen, FIG. 5B is a diagram showing a projected image enlarged by an optical loupe, and FIG. It is a figure which shows the image displayed by the photography display means.

  Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. It should be noted that the following embodiments do not limit the invention according to each claim, and all combinations of the features described in the embodiments are not necessarily essential to the solution means of the invention. .

[First Embodiment]
First, the overall configuration of the machine tool with a projector according to the first embodiment will be described with reference to FIG. In addition, in the following description, the machine tool with the projector according to the present embodiment is described as being an optical profile grinding machine, but the invention is not limited to this, and any other machine tool with the projector may be used. It may be a machine tool of. Further, in the following description, “X-axis direction” means a direction perpendicular to the paper surface of FIG. 1, “Z-axis direction” means an up-down direction in FIG. 1, and “Y-axis direction” means FIG. Means the left-right direction.

  As shown in FIG. 1, an optical profile grinding machine 1 according to the present embodiment is for holding a work holding mechanism 10 that holds a work W to be processed, and for grinding the work W on the work holding mechanism 10. A grindstone holding mechanism 20 that holds a grindstone 22, a projector 30 that can magnify and project a work W, and an optical loupe that magnifies a part of a projection image projected on a projection screen 31 of the projector 30. 40 (first magnifying means), a photographing display means 50 (second magnifying means) for displaying a part of the projected image in the magnified area of the optical loupe 40 at a higher magnification than the optical loupe 40, and grinding processing An operation control panel 60 is provided which is capable of inputting and registering various information and which automatically controls the optical copying grinding machine 1 based on a predetermined machining program. Since the operation control panel 60 according to the present embodiment can adopt various known configurations, detailed description thereof will be omitted.

  As shown in FIG. 1, the work holding mechanism 10 includes a work table 12 on which a work W is placed, and a work table 12 which is operated by an operator or automatically controlled based on a machining program so as to move the work table 12 in the X-axis direction, the Y-axis direction, and It is provided with an X-axis direction moving mechanism 14, a Y-axis direction moving mechanism 16 and a Z-axis direction moving mechanism 18 which move in the Z-axis direction respectively. Each of the X-axis direction moving mechanism 14, the Y-axis direction moving mechanism 16 and the Z-axis direction moving mechanism 18 is provided with an operation handle (not shown) operated by the operator, and the operator through the operation handle. It is configured to move the work W along the X-axis direction, the Y-axis direction, and the Z-axis direction by the operation of. Note that the work holding mechanism 10 according to the present embodiment can adopt a known configuration disclosed in, for example, Patent Document 1, and thus a detailed description thereof will be omitted.

  As shown in FIG. 1, the whetstone holding mechanism 20 includes a whetstone head 24 on which a whetstone 22 is rotatably supported, and an X-axis direction and a Y-axis for the whetstone head 24 by an operator's operation or automatic control based on a machining program. It is provided with an X-axis direction moving mechanism 25 and a Y-axis direction moving mechanism 26 that move the respective directions. The grindstone head 24 supports the grindstone 22 so as to be movable along the Z-axis direction, and is configured to also function as a Z-axis direction moving mechanism of the grindstone 22. The X-axis direction moving mechanism 25 includes an X-axis handle 27 operated by an operator, and is configured to move the grindstone 22 along the X-axis direction by an operation of the operator via the X-axis handle 27. Has been done. Further, the Y-axis direction moving mechanism 26 includes a Y-axis handle 28 operated by an operator, and the operator operates the Y-axis handle 28 to move the grindstone 22 along the Y-axis direction. Is configured. Note that the grindstone holding mechanism 20 according to the present embodiment can adopt a known configuration disclosed in, for example, Patent Document 1 and so the detailed description thereof will be omitted.

  The optical profile grinding machine 1 according to the present embodiment is configured as described above, and is manually operated or automatically controlled based on a machining program so that the work W placed on the work table 12 is in the X-axis direction, the Y-axis direction, and the Z-axis direction. Is configured to be able to be positioned. Further, the optical profile grinding machine 1 hits the workpiece W while moving the grindstone 22 rotated at a predetermined rotation speed in the X-axis direction, the Y-axis direction and the Z-axis direction by manual control or automatic control based on a machining program. By bringing them into contact with each other, the work W can be ground.

  In the projector 30, as shown in FIG. 2, a light beam BM emitted from a light source 32 such as an LED passes through the lens group 33 and the dustproof glass 34a to illuminate the work W and the grindstone 22, and the shadow thereof is dustproof glass. 34b, the half mirror 35, the reflecting mirror 36a, the magnifying lens 37, and the reflecting mirror 36b, and it is comprised so that it may project on the projection screen 31. The magnifying lens 37 is configured so that the magnification of the projected image can be arbitrarily changed, and for example, any magnifying lens can be selected from a plurality of magnifying lenses having different magnifications. The projector 30 according to the present embodiment is configured to be capable of enlarging the work W and the grindstone 22 at a magnification of about 20 to 50 times and projecting them on the projection screen 31. Further, the projector 30 reflects the light beam BM ′ from the reflection image light source lamp 38 by the half mirror 35 to illuminate the work W and the grindstone 22 from above, and also projects an image from above the work W and grindstone 22. It is configured so that it can be displayed on the screen 31. Note that the projector 30 according to the present embodiment is not limited to the configuration shown in FIG. 2, and various known projectors can be adopted, so a detailed description thereof will be omitted.

  The projector 30 has a projection screen 31 capable of projecting the shadow reflected by the reflecting mirror 36b. In the present embodiment, the projector 30 is configured such that the projection screen 31 can be arranged in a detachable manner, and the projection screen 31 has a shape to be ground (hereinafter, referred to as a “desired shape”) of the work W. It is a drawn chart paper. As a result, the projector 30 according to the present embodiment is configured such that the desired shape 2 of the work W and the projected image on the projection screen 31 can be visually recognized at the same time, as shown in FIG. .

  With the configuration described above, the projector 30 according to the present embodiment can change the shapes of the projection image 4 on the projection screen 31 and the desired shape 2 of the chart paper at the same time as shown in FIG. The work W can be ground so as to match. Further, the projector 30 according to the present embodiment simultaneously copies the projected image of the grindstone 22 and the desired shape 2 of the chart paper on the projection screen 31 even when the processing program is created by the teaching playback method, so that the desired chart paper is obtained. The position of the grindstone can be taught (measured and registered) along the contour of the shape. The machining program is created by the teaching playback method with the work W removed.

  As shown in FIG. 3, the optical loupe 40 is provided so as to be spaced apart from the projection screen 31, and is provided with a loupe body 41 capable of enlarging a part of a projection image projected on the projection screen 31. , And a loupe moving mechanism 43 for movably supporting the loupe body 41 on the plane of the projection screen 31.

  As shown in FIG. 3, the loupe moving mechanism 43 includes an upper guide rail 44a provided along the upper edge of the projection screen 31, and an upper slider 45a slidable along the upper guide rail 44a. A lower guide rail 44b provided along the lower edge of the projection screen 31, a lower slider 45b slidable along the lower guide rail 44b, and an upper slider 45a and a lower slider 45b. And a pair of guide bars 46a and 46b that are formed. The loupe moving mechanism 43 can restrict the movement of the loupe body 41 in the Y-axis direction (left-right direction) by locking the movement of the upper slider 45a and the lower slider 45b with respect to the upper guide rail 44a and the lower guide rail 44b. A lock mechanism (not shown) may be further provided.

  As shown in FIG. 3, the loupe body 41 is supported between a pair of guide bars 46a and 46b, and is configured to be slidable in the vertical direction along the pair of guide bars 46a and 46b. On one side of the loupe body 41, a clamp mechanism 42 capable of switching between the clamped state and the unclamped state for the one guide bar 46a is provided. The clamp mechanism 42 allows the loupe body 41 to move in the Z-axis direction in the unclamped state (that is, slides along the pair of guide bars 46a and 46b), and moves the loupe body 41 in the Z-axis direction in the clamped state. Are configured to be regulated and positioned. The loupe body 41 is not particularly limited, but for example, a loupe having a magnification of about 2 to 4 times (about 40 to 200 times the actual size of the work W and the grindstone 22) is adopted. It is possible.

  With the configuration described above, the optical loupe 40 can move the loupe body 41 in the Z-axis direction (vertical direction) by setting the clamp mechanism 42 of the loupe body 41 in the non-clamping state, and the upper slider 45a and By sliding the lower slider 45b along the upper guide rail 44a and the lower guide rail 44b, the loupe body 41 can be moved in the Y-axis direction (left-right direction). Further, the position of the loupe body 41 on the projection screen 31 can be fixed (positioned) by setting the clamp mechanism 42 of the loupe body 41 in a clamped state at an arbitrary position.

  As shown in FIGS. 1 and 2, the photographing display means 50 includes a camera 52 for photographing a part of a projected image via a beam splitter 59 described later, and a display 54 for displaying the photographed image photographed by the camera 52. It has and. Further, as shown in FIG. 4, the photographing display means 50 operates the photographing display means 50, and an image processing unit 56 that performs image processing so that the photographed image photographed by the camera 52 can be displayed on the display 54. The storage unit 58 stores various information and programs. The image processing unit 56 executes, for example, a process of reversing the projected image reversed by the reflection at the beam splitter 59 in order to restore the original direction, a process of enlarging or reducing an image on the display 54 by an operator's operation, and the like. It is configured to be possible. A personal computer or the like to which a camera 52 is connected can be used as the photographing display unit 50.

  As shown in FIG. 3, the camera 52 is fixed to the loupe body 41 of the optical loupe 40, and is configured to be movable integrally with the loupe body 41 on the projection screen 31. The photographing display means 50 is configured to display a photographed image at a magnification higher than that of the optical loupe 40, for example, a magnification of about 300 to 700 times the actual size of the work W and the grindstone 22. An example of such a configuration is a configuration in which a captured image captured by the camera 52 is enlarged and displayed by image processing in the image processing unit 56. Further, instead of or in combination with the configuration, a magnifying lens having a higher magnification than that of the optical loupe 40 is provided between the beam splitter 59 and the camera 52, and a projected image magnified by the magnifying lens is provided by the camera 52. It is also possible to adopt a configuration for photographing.

  As shown in FIG. 2, the optical profile grinding machine 1 according to the present embodiment further includes a beam splitter 59 provided between the projection screen 31, the optical loupe 40, and the camera 52 of the photographing display unit 50. . The beam splitter 59 allows the projection image on the projection screen 31 to be seen through from the optical loupe 40 via the beam splitter 59, and directs the projection image on the projection screen 31 to the camera 52 of the photographing display means 50. It is configured so that it can be reflected. As such a beam splitter 59, for example, a half mirror can be adopted. In the illustrated example, the optical loupe 40 is arranged so as to face the projection screen 31, and the camera 52 is arranged in a direction orthogonal to the facing direction, but the present invention is not limited to this, and various arrangements are possible. It is also possible to add an appropriate component such as a reflecting means according to the arrangement.

  The optical profile grinding machine 1 according to the present embodiment is provided with such a beam splitter 59, so that the optical magnifier 40 and the photographing display means 50 can simultaneously observe the same region at different magnifications. ing. That is, the photographing display unit 50 according to the present embodiment is configured to display a part of the projected image in the enlarged region of the optical loupe 40 at a magnification higher than that of the optical loupe 40.

  As described above, the optical profile grinding machine 1 according to the present embodiment is projected onto the projection screen 31 and the optical loupe 40 that magnifies a part of the projection image projected onto the projection screen 31 of the projector 30. And a photographing display unit 50 for photographing and displaying a part of the projected image, and the photographing display unit 50 magnifies a part of the projected image in the enlarged region of the optical loupe 40 at a magnification higher than that of the optical loupe 40. It is configured to display.

  The optical profile grinding machine 1 according to the present embodiment is provided with such a configuration, so that the projector 30 enlarges the low magnification, the optical magnifier 40 enlarges the medium magnification, and the photographing display means 50 makes the high magnification. In combination with magnification enlargement, it becomes possible to grind the work W or create a machining program by the teaching playback method while simultaneously observing these magnified images. According to such an optical profile grinding machine 1, for example, as shown in FIG. 5A, the entire projection image 4 obtained by enlarging the work W and / or the grindstone 22 at a low magnification is grasped by the projection screen 31. Meanwhile, as shown in FIG. 5B, a region to be an observation site in the projected image 4 is selected by enlarging the region with an optical magnifier 40 at a medium magnification, and as shown in FIG. Since it becomes possible to measure the shape and dimension of the work details by further magnifying and displaying the formed area at a high magnification by the photographing display means 50, it is possible to secure a wide field of view while ensuring a wide field of view as compared with the conventional optical profile grinding machine. It is possible to perform accurate measurement, and there is an advantage that the convenience is dramatically improved.

  Further, in the optical copying grinding machine 1 according to the present embodiment, the beam splitter 59 is provided between the projection screen 31, the optical loupe 40, and the photographing display means 50, so that the same portion on the work W can be more reliably. Can be simultaneously observed by the optical loupe 40 and the photographing display means 50.

  Further, the optical profile grinding machine 1 according to the present embodiment is configured to display a photographed image magnified at a high magnification on the display 54 of the photographing display means 50, and depending on a direction to look into, such as the optical loupe 40. Since there is no inconvenience that the appearance is different, stable measurement can be performed even by an unskilled person.

  Further, in the optical copying grinding machine 1 according to the present embodiment, the optical loupe 40 and the camera 52 can move integrally on the projection screen 31, so that the projection images on the projection screen 31 can be more reliably identified. It is possible to simultaneously observe the part by the optical magnifying glass 40 and the photographing display means 50.

  Further, since the optical copying grinding machine 1 according to the present embodiment is configured such that the chart paper can be arranged on the projection screen 31, the desired shape 2 drawn on the chart paper and the projected image 4 of the work W are displayed. At the same time, it becomes possible to perform observation at a high magnification, which makes it possible for an unskilled person to easily determine the work shape dimension.

[Second Embodiment]
In the above-described first embodiment, the chart paper on which the desired shape 2 of the work W is drawn is used as the projection screen 31, and the desired shape 2 of the chart paper together with the projected image 4 is photographed and displayed by the photographing display means 50. However, the present invention is not limited to this. For example, like the optical copying grinding machine according to the second embodiment described below, a configuration for drawing the desired shape 2 of the work W on the display 54 by image processing in the photographing display unit 50 without using a chart paper. It is also possible to adopt.

  That is, in the optical profile grinding machine according to the second embodiment of the present invention, image data (for example, line drawing data) of the desired shape 2 of the work W is stored in advance in the storage unit 58 of the photographing display unit 50, and the image is displayed. The processing unit 56 superimposes the photographed image photographed by the camera 52 and the image data of the desired shape 2 of the work W stored in the storage unit 58 on the display 54 so that both of these data are visually recognized at the same time. It is configured to be possible. Hereinafter, it is assumed that the image data of the desired shape 2 of the work W stored in the storage unit 58 is “line drawing data”.

  Specifically, in addition to the processing of the image processing unit 56 according to the first embodiment described above, the image processing unit 56 further uses a reference point (for example, a corner of the work W) designated by the worker as a reference. The position of the photographed image photographed by the camera 52 and the line drawing data of the desired shape 2 of the work W are made to coincide with each other, and then the processing of superposing these two data and displaying them on the display 54 can be executed. . Further, the image processing unit 56 can execute the processing of enlarging or reducing the line drawing data of the desired shape 2 of the work W at the same magnification, simultaneously with or following the enlargement or reduction of the captured image by the operator's operation. It is configured.

  Further, the image processing unit 56 is configured to be able to execute a process of moving the captured image on the display 54 by an operator's operation in a state where the captured image and the line drawing data are enlarged, and the captured image is moved. Simultaneously with or following this, processing for moving the line drawing data in synchronization is also configured to be executable. The synchronous movement processing of the photographed image and the line drawing data is configured to be similarly executed when the work W is moved by the work holding mechanism 10 and the photographed image on the display 54 is moved thereby. In this case, the coordinate position of the work W is acquired from the work holding mechanism 10, the movement amount of the work W is calculated, and the movement amount is converted into the movement amount on the display 54 based on a predetermined set magnification. By moving the line drawing data based on the conversion movement amount, the line drawing data can be moved in synchronization with the captured image.

  In the optical profile grinding machine according to the second embodiment described above, as in the optical profile grinding machine 1 according to the first embodiment, a wider field of view is secured as compared with the conventional optical profile grinding machine. At the same time, it has an advantage that highly accurate measurement can be performed and convenience is dramatically improved.

  Further, since the optical profile grinding machine according to the second embodiment is configured to display the image data of the desired shape 2 of the work W on the display 54, the desired shape and the projected image 4 of the work W are simultaneously displayed. It becomes possible to observe at a high magnification, which makes it possible for an unskilled person to easily determine the work shape dimension without using a chart paper.

  Particularly, in the optical profile grinding machine according to the second embodiment, the image data displayed on the display 54 is configured to be movable in accordance with the movement of the projection image 4, so that, for example, the display 54 of the photographing display unit 50. It is possible to observe the entire work W, which does not fit in the display range, together with the image data.

  In the optical profile grinding machine according to the second embodiment, since it is not necessary to use chart paper as the projection screen 31, a screen on which the desired shape 2 of the work W is not drawn is integrally provided on the projector 30. It can also be configured.

  Although the preferred embodiment of the present invention has been described above, the technical scope of the present invention is not limited to the scope described in the above-described embodiment. Various changes or improvements can be added to the above-described embodiments.

[Other Embodiments]
For example, in the above-described first and second embodiments, the optical copying grinding machine 1 is described, but the present invention is not limited to this, and a machine tool with a projector can be used in various machine tools. It can be used.

  In the above-described first and second embodiments, the beam splitter 59 is provided between the projection screen 31 and the optical loupe 40 and the photographing display means 50. However, the present invention is not limited to this, and the optical loupe 40 is used for enlargement. Various configurations can be adopted as long as the captured display unit 50 can further magnify and display a part of the projected image.

  In the above-described first and second embodiments, the optical loupe 40 and the camera 52 are described as being integrally movable on the projection screen 31, but the present invention is not limited to this. For example, at least one of the optical loupe 40 and the camera 52 may be fixed on the projection screen 31, or the optical loupe 40 and the camera 52 may be independently movable.

  In the above-described second embodiment, the image data displayed on the display 54 has been described as being movable according to the movement of the projected image, but the present invention is not limited to this, and the image data may be immovable. Alternatively, it may be configured to move independently without being synchronized with the movement of the projected image.

  In the above-described first and second embodiments, the description is given assuming that the captured image is displayed on the display 54 provided separately from the projection screen 31, but the present invention is not limited to this, and the display 54 is integrated with the projection screen 31. May be provided on the projection screen 31, or may be configured to display a captured image on a part of the projection screen 31 (for example, a blank part).

  In the above-described first and second embodiments, the photographing display means 50 has been described as having a configuration in which the camera 52 and the display 54 are provided as separate bodies, but the present invention is not limited to this, and for example, these cameras and display. It may be a tablet terminal (for example, a smartphone or the like) that integrally includes.

  When a tablet terminal is used as the photographing display unit 50, as an example, the tablet terminal and the loupe body 41 are integrated so that the display of the tablet terminal is arranged side by side in the up-down direction or the left-right direction with the viewing hole of the loupe body 41. Can be provided in the. In this case, the beam splitter 59 is provided between the projection screen 31 and the loupe body 41, and an appropriate reflecting mirror is provided between the beam splitter 59 and the camera of the tablet terminal. It is possible to adopt a configuration in which the projection image on the projection screen 31 is captured by the camera of the tablet terminal via the.

  Further, as another example of the case where a tablet terminal is used as the image capturing / displaying means 50, a configuration is such that the peephole of the loupe body 41 is directly captured by the camera of the tablet terminal, and the captured image is enlarged and displayed on the display of the tablet terminal. Can be In this case, the tablet terminal is displaced from the photographing position overlapping the loupe body 41 in the front-rear direction and the retracted position where the peep hole of the loupe body 41 can be visually recognized by shifting the photographing position from the loupe body 41 in the front-rear direction. It is preferable to be provided so as to be movable between and. According to such a configuration, by locating the tablet terminal at the shooting position, it becomes possible to display a high-magnification projected image on the display of the tablet terminal, and by locating the tablet terminal at the retracted position. It is possible to visually recognize a projection image of medium magnification through the magnifying glass body 41.

  In the above-described first and second embodiments, the optical magnifier 40 is adopted as the first magnifying means for displaying the projection image on the projection screen 31 at the medium magnification, and the projection image on the projection screen 31 is displayed at the high magnification. Although the configuration in which the image capturing and displaying means 50 is adopted as the 2 enlargement means has been described as an example, the invention is not limited to this. For example, as the first enlarging means, a tablet terminal having a camera function capable of capturing a part of the projection image projected on the projection screen 31 and a display function for displaying a captured image captured by the camera function ( For example, a smartphone or the like) can be adopted. Even when the tablet terminal is adopted in this way, the tablet terminal can be configured to be supported by an appropriate moving mechanism similarly to the loupe body 41 described in the first and second embodiments. When the tablet terminal is used as the first enlarging means in this way, as an example, a personal computer or the like that acquires a captured image from the tablet terminal and displays a part of the captured image at a higher magnification than the tablet terminal is used. It can be appropriately adopted as the second enlarging means.

  It is apparent from the scope of the claims that the modifications as described above are included in the scope of the invention.

  DESCRIPTION OF SYMBOLS 1 Optical copy grinding machine (machine tool with projector), 2 Desired shape, 4 Projection image, 30 Projector, 31 Projection screen, 40 Optical loupe (1st magnifying means), 50 Photographing display means (2nd magnifying means) , 52 camera, 54 display, 59 beam splitter, W work

Claims (10)

A machine tool with a projector having a projector capable of enlarging and projecting a workpiece,
First magnifying means for magnifying a part of the projection image projected on the projection screen of the projector;
A second magnifying means for displaying a part of the projected image in the magnifying area of the first magnifying means at a magnification higher than that of the first magnifying means. The machine tool with a projector according to claim 1, wherein the first magnifying means includes an optical loupe that is provided so as to be opposed to the projection screen. The machine tool with a projector according to claim 1 or 2, wherein the second enlarging means includes a camera that captures a part of the projected image. The first magnifying means includes an optical loupe provided so as to be opposed to the projection screen,
The second magnifying means includes a camera for photographing a part of the projected image,
The optical loupe is configured to be movable on the projection screen,
The machine tool with a projector according to claim 1, wherein the camera is configured to be movable integrally with the optical loupe on the projection screen. Further comprising a beam splitter provided between the projection screen and the optical loupe,
The machine tool with a projector according to claim 2 or 4, wherein the second magnifying means is configured to be able to photograph a part of the projected image via the beam splitter. The first enlargement means is a tablet terminal having a camera function capable of capturing a part of the projection image projected on the projection screen and a display function of displaying a captured image captured by the camera function,
The second enlargement unit is configured to acquire the captured image from the first enlargement unit and display a part of the captured image at a magnification higher than that of the captured image displayed by the first enlargement unit. The machine tool with a projector according to claim 1, wherein: The second magnifying means includes a display for displaying a part of the projected image in the magnifying area of the first magnifying means at a magnification higher than that of the first magnifying means. The projection data according to any one of claims 1 to 6, wherein the image data of the desired shape is configured to be displayed on the display so that the projection image above can be visually recognized at the same time. Machine tool. The second enlargement unit is configured to be able to move the projection image on the display, and moves the image data of the desired shape on the display in accordance with the movement of the projection image. The machine tool with a projector according to claim 7, wherein the machine tool is equipped with a projector. The chart paper on which the desired shape is drawn is arranged so that the desired shape of the workpiece and the projected image on the projection screen can be viewed at the same time. A machine tool with a projector according to any one of to 6. It is an optical copying grinder which has a grindstone which can grind a to-be-processed object. The machine tool with a projector of any one of Claims 1-9 characterized by the above-mentioned.

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