JP2014094419A - Fixing structure in machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door fixing structure in a machine tool, capable of fixing a door with a simple structure, at a close position for closing an opening portion formed on a cover of a splash guard and the like, with the door.SOLUTION: In the machine tool covering a machining space of a work provided on a body of the machine tool with the cover, and supporting the door for opening/closing the opening portion formed on the cover so as to horizontally slide to the body, the door fixing structure in the machine tool fixes the door at a close position P where the opening portion is closed by the door. Folding portions 27, 34, 23, 31 locked to each other to prevent the horizontal sliding of the door when the door is bent and deformed at the close position P, are respectively formed on the cover and an end portion of the door adjacent to the cover.

Description

  The present invention provides a door fixing structure in a machine tool in which a machining space of a workpiece provided in a main body of a machine tool is covered with a cover and the door is fixed at a closed position where an opening formed in the cover is closed by a door. About.

  For example, Patent Document 1 discloses a door lock device for a splash guard installed in a machine tool, which can be executed in combination with a door unlocking operation and a fixing operation only by opening and closing the door. In the door lock device of Patent Document 1, two doors that open and close the opening of the splash guard are provided so as to be slidable, and a hook device provided with a restoring force of a spring is installed on one door, By closing the two doors, the hook is automatically locked to the hook of the other door, and the two doors can be fixed. In addition to this, it becomes possible to open the two doors in a state where the hook is unlocked from the hook by pushing the release push rod provided on the door grip of the one door. .

Japanese Utility Model Publication No. 6-9852

  However, in the door lock device described above, a mechanism for locking the hook device to the metal fitting to fix the plurality of doors and a mechanism for releasing the lock from the metal fitting to release the fixation are separately provided. Therefore, it is difficult to say that the structure for fixing the door is simple.

  The present invention has been proposed in view of such a situation, and a machine that can fix a plurality of doors with a simple structure in a closed position in which an opening formed in a cover such as a splash guard is closed by a door. An object is to provide a door fixing structure in a machine.

  The door fixing structure in the machine tool according to the first aspect of the present invention includes a cover that covers a machining space of a workpiece provided in a main body of the machine tool, and opens and closes an opening formed in the cover with respect to the main body. In the machine tool supported in a horizontally slidable manner, the door is fixed in a closed position where the opening is closed by the door, and the door is bent at the closed position. Folded portions that are locked to each other and prevent the horizontal sliding movement of the door when deformed are formed on the cover and an end portion of the door adjacent to the cover, respectively.

  According to a second aspect of the present invention, in the first aspect, the door is configured by a plurality of doors that are movable in the horizontal direction and are adjacent to each other in the closed position, and the openings can be closed. A part of the cover is formed by one of the doors, and the folded portion is formed at an end of the one door and an end of the other door adjacent to the end. It is characterized by.

According to the door fixing structure in the machine tool according to the first aspect of the invention, for example, during operation of the machine tool, the work moves from the machining space toward the door, so that the door in the closed position is added from the work. Even in the case where the cover is bent and deformed by force, if the folded portions formed at the cover and the end portion of the door adjacent to the cover are locked, the horizontal sliding movement of the door can be prevented. Therefore, the door can be fixed at the closed position by a simple structure in which the folded portions are engaged with each other.
According to the invention of claim 2, for example, during the operation of the machine tool, the workpiece moves from the machining space toward each door (one door and the other door), so that each door in the closed position is moved from the workpiece. Even in the case of bending deformation due to the applied force, the horizontal sliding movement of each door can be prevented if the folded portions formed at the end portions of each door are locked. Therefore, each door can be fixed at the closed position by a simple structure in which the folded portions of the doors are locked.

It is a whole perspective view of the vertical lathe which opened the opening part provided in the front cover in the embodiment of the present invention. It is a perspective view of the same type lathe which closed the opening part by the left door and the right door. It is the principal part cross-sectional view of the left side door and the right side door which closed the opening part.

  An embodiment of the present invention will be described with reference to FIGS. A vertical lathe 1 shown in FIGS. 1 and 2 includes a bed 2, a column 3, a cross rail 4, a saddle 5, a front cover 6, a lateral cover 7, a rear cover 8, and a left door 9. And a right door 10. The vertical lathe 1 is an example of a machine tool according to the present invention.

  As shown in FIG. 1, a circular turntable 11 is provided on the upper surface of the bed 2. For example, a cylindrical workpiece W is detachably fixed to the upper surface of the turntable 11. Further, the columns 3 and 3 are respectively erected in a state of being connected to the left and right side surfaces of the bed 2. The cross rail 4 is installed between the columns 3 and 3 in a horizontal state in the horizontal direction of the vertical lathe 1. In addition, the cross rail 4 is provided so that the front surface of each column 3 can be moved in the vertical direction of the vertical lathe 1. The saddle 5 is provided on the front surface of the cross rail 4 so as to be movable in the left-right direction. As shown in FIG. 1, a ram 12 to which a tool (not shown) for processing a workpiece can be attached is provided at the lower end of the saddle 5 so as to be movable in the vertical direction.

  As shown in FIG. 2, a front cover 6 provided with an opening 13 (see FIG. 1) is provided upright on the front side of the bed 2 on the front side of the saddle 5. Further, as shown in FIGS. 1 and 2, lateral covers 7, 7 are erected along the left and right edges of the opening 13 on the side of the bed 2 on the upper surface of the bed 2. In addition, as shown in FIG. 1, a rear cover 8 that abuts the lateral covers 7, 7 on the rear surface of the bed 2 on the upper surface of the bed 2, and the center portion is located behind the bed 2 in accordance with the shape of the turntable 11. It is erected in a protruding arc shape. In the vertical lathe 1 of the present embodiment, the space on the bed 2 surrounded by the front cover 6, the side covers 7, 7, the rear cover 8, the left door 9 and the right door 10 described later is the work W Machining space 15. The bed 2 is an example of the main body of the machine tool of the present invention, and the front cover 6, the side covers 7, 7 and the rear cover 8 are examples of the cover of the present invention.

  As shown in FIGS. 1 and 2, a left door 9 and a right door 10 for opening and closing the opening 13 are provided in front of the front cover 6 so as to be horizontally slidable in the left-right direction of the vertical lathe 1. ing. The left door 9 and the right door 10 are formed of steel plates. FIG. 2 shows a state in which the left door 9 and the right door 10 are arranged adjacent to each other at a closed position P where the opening 13 (see FIG. 1) is closed. As shown in FIG. 2, in the vertical lathe 1, the guide rail 17 extending in the left-right direction is provided in a state of being connected to the front surface of the bed 2, and rollers 18, 18 that can roll on the guide rail 17 are provided. The doors 9 and 10 are provided at the lower end portions. The doors 9 and 10 are slidable in the left and right directions by rollers 18 and 18 that roll on the guide rail 17. For example, if a part (the left half or the right half) of the opening 13 is closed by either the left door 9 or the right door 10, the front door 6, the side covers 7, 7, The machining space 15 is covered from the outside while leaving the rear cover 8 and the other part (the right half or the left half) of the opening 13. Thereby, the said one door forms a part of cover of this invention. The left door 9 and the right door 10 are examples of a plurality of doors of the present invention. One of the left door 9 and the right door 10 is an example of one door of the present invention, and the other is an example of another door of the present invention.

  Each door 9, 10 is in a cantilever support state in which the upper end is free and the lower end is supported on the guide rail 17 by the rollers 18, 18. Further, windows 19, 19 that can be seen through the processing space 15 from the outside of the doors 9, 10 at the closed position P are provided on the front surfaces of the doors 9, 10. A handle 20 protrudes forward of each door 9, 10. In addition, the lower end part of each door 9 and 10 contacts a cantilever support side.

  Further, as shown in FIG. 3, a first folded portion 22 is formed at the right edge of the left door 9 so as to be folded back toward the back surface 9A side of the left door 9 and extending in a direction substantially orthogonal to the back surface 9A. A second folded portion 23 is formed at the leading edge of the first folded portion 22 and is folded from the leading edge to the left side of the left door 9 in a direction parallel to the back surface 9A. In addition, as shown in FIG. 3, the sheet metal 24 is welded and fixed to the left side of the second folded portion 23 on the back surface 9 </ b> A of the left door 9. A third folded portion 25 that extends longer than the first folded portion 22 in a direction substantially orthogonal to the back surface 9 </ b> A is formed on the right edge of the sheet metal 24. A fourth folded portion 26 that is folded back to the right door 10 side (the right side of the left door 9) in the direction parallel to the back surface 9A is formed at the leading edge of the third folded portion 25. The leading edge of the fourth folded portion 26 is positioned substantially on the same line as the right edge of the left door 9 in a direction substantially orthogonal to the back surface 9A. Furthermore, a fifth folded portion 27 that is folded back toward the front surface 9B side of the left door 9 and extends in a direction substantially orthogonal to the fourth folded portion 26 is formed at the leading edge of the fourth folded portion 26.

  On the other hand, as shown in FIG. 3, a sixth folded portion 29 is formed at the left edge of the right door 10 so as to be folded back toward the back surface 10A side of the right door 10 and extending in a direction substantially orthogonal to the back surface 10A. As shown in FIG. 3, the sixth folded portion 29 is longer than the first folded portion 22 of the left door 9 and shorter than the third folded portion 25 in the direction substantially orthogonal to the back surface 10A at the closed position P as shown in FIG. It extended so that it might become. Further, the seventh folded back portion 29 is folded at the front end edge of the sixth folded portion 29 at the closed position P in the direction parallel to the rear surface 9A of the left door 9 from the front end edge to the left door 9 side (the left side of the right door 10). A folded portion 30 is formed. The seventh folded portion 30 faces the second folded portion 23 at the closed position P and exceeds the second folded portion 23 and the fifth folded portion 27 of the left door 9 in the direction parallel to the back surface 9A. It extends to the front of the folded portion 25. In addition, an eighth folded portion 31 that is folded back toward the front surface 9B side of the left door 9 at the closed position P and extends in a direction substantially orthogonal to the seventh folded portion 30 is formed at the leading edge of the seventh folded portion 30. ing. As shown in FIG. 3, the seventh folded portion 30 is formed in the seventh folded portion 30 because it extends beyond the second folded portion 23 and before the third folded portion 25 in a direction parallel to the back surface 9A. The eighth folded portion 31 is located between the second folded portion 23 and the third folded portion 25 in a direction parallel to the back surface 9A.

  Furthermore, as shown in FIG. 3, the sheet metal 33 is welded and fixed to the seventh folded portion 30 so as to face the fifth folded portion 27 of the left door 9. The width dimension of the sheet metal 33 was the same as the extended length of the seventh folded portion 30. Then, the sheet metal 33 is folded back to the back surface 9A side of the left door 9 at the closed position P and extends to the front of the fifth folded part 27 in a direction substantially orthogonal to the extending direction of the seventh folded part 30. A ninth folded portion 34 is formed. As shown in the drawing, the left edge of the sheet metal 33 is located between the third folded portion 25 and the fifth folded portion 27 in the direction parallel to the back surface 9A, and therefore the ninth folded portion formed on the left edge. The portion 34 is also positioned between the third folded portion 25 and the fifth folded portion 27 in a direction parallel to the back surface 9A. A tenth folded portion 35 is formed at the right edge of the sheet metal 33 so as to be folded back toward the back surface 10A side of the right door 10 and extend in a direction substantially orthogonal to the extending direction of the seventh folded portion 30 at the closed position P. Yes. The left edge of the right door 10 is an example of the end of one door of the present invention or the end of another door, and the right edge of the left door 9 and the tip edge of the fourth folded portion 26 are the book. It is an example of the edge part of the other door of invention, or the edge part of one door.

  In the present embodiment, since the left door 9 and the right door 10 are cantilevered by the guide rail 17, the support for the guide rail 17 may become unstable. For this reason, the force applied from the work W moved from the processing space 15 toward the left door 9 or the right door 10 causes the left door 9 or the right door 10 in the closed position P to bend and deform and then move horizontally. It is possible. Even in such a case, the left door 9 and the right door 10 can be fixed at the closed position P as described below. For example, when the work W (see FIG. 1) on the turntable 11 provided in the machining space 15 falls and pushes the back surface 9A of the left door 9 during operation of the vertical lathe 1, the left door 9 is moved to its lower end. The portion is bent toward the front of the left door 9 with the portion as a fulcrum. Thereby, the fifth folded portion 27 of the left door 9 shown in FIG. 3 also moves toward the sheet metal 33 facing the fifth folded portion 27. Then, when the left door 9 tries to slide horizontally in the direction away from the right door 10 (the left side of the left door 9) by the force applied to the back surface 9A from the workpiece W, the fifth folded portion 27 is moved to the sheet metal 33. The ninth turn-up portion 34 is hooked and locked. Therefore, the left door 9 is prevented from moving horizontally in a direction away from the right door 10. Therefore, even when the workpiece W pushes the back surface 9 </ b> A of the left door 9, the left door 9 and the right door 10 can be fixed at the closed position P. The fifth folding part 27 and the ninth folding part 34 are examples of the folding part of the present invention.

  Further, when the work W on the turntable 11 falls and pushes the back surface 10A of the right door 10 during the operation of the vertical lathe 1, the right door 10 faces the front of the right door 10 with its lower end as a fulcrum. Bend and deform. Accordingly, the seventh folded portion 30 of the right door 10 shown in FIG. 3 also moves toward the second folded portion 23 that faces the seventh folded portion 30. Then, the eighth folded portion 31 formed in the seventh folded portion 30 moves between the extended end of the second folded portion 23 and the third folded portion 25. Then, when the right door 10 tries to slide horizontally in the direction away from the left door 9 (the right side of the right door 10) by the force applied to the back surface 10A from the workpiece W, the eighth folding portion 31 is moved to the second folding portion 31. It is abutted and locked to the extended end of the portion 23. Therefore, the right side door 10 is prevented from sliding horizontally in a direction away from the left side door 9. Therefore, even when the workpiece W pushes the back surface 10 </ b> A of the right door 10, the left door 9 and the right door 10 can be fixed at the closed position P. The second folded portion 23 and the eighth folded portion 31 are examples of the folded portion of the present invention.

<Effect of this embodiment>
In the present embodiment, the work W on the turntable 11 falls and pushes the back surface 9A of the left door 9 during the operation of the vertical lathe 1 so that the left door 9 in the closed position P is moved forward of the left door 9. Even when the left side door 9 is bent and deformed, when the fifth folded part 27 of the left door 9 is hooked and locked to the ninth folded part 34 of the right door 10, the left door 9 slides horizontally in a direction away from the right door 10. It is prevented from moving. Further, even when the right door 10 in the closed position P is bent and deformed toward the front of the right door 10 by pushing the back surface 10A of the right door 10 by falling down, the right door 10 is turned back to the eighth. When the portion 31 is abutted and locked to the extending end of the second folded portion 23 of the left door 9, the right door 10 is prevented from moving horizontally in a direction away from the left door 9. Therefore, a simple structure in which the fifth folded portion 27 of the left door 9 is hooked and locked to the ninth folded portion 34 of the right door 10, or the eighth folded portion 31 of the right door 10 is used as the second folded portion of the left door 9. The left door 9 and the right door 10 can be fixed at the closed position P by a simple structure of abutting and engaging with the extending end of 23.

  The present invention is not limited to the above-described embodiment, and can be implemented by appropriately changing a part of the configuration without departing from the spirit of the invention. In the above-described embodiment, the sheet metal 24 is welded and fixed to the back surface 9A of the left door 9 or the sheet metal 33 is welded and fixed to the seventh folded portion 30 of the right door 10. You may fix in the state screwed to the back surface 9A, or you may fix the sheet metal 33 in the state screwed to the said 7th folding | turning part 30. FIG. In the above-described embodiment, the example in which the lower end portions of the doors 9 and 10 are cantilevered on the guide rails 17 of the vertical lathe 1 is shown, but the present invention is not limited to this. For example, the upper and lower ends of the doors 9 and 10 are supported so as to be horizontally slidable with respect to the guide rail, and any of the doors 9 and 10 is bent and deformed by the force applied from the workpiece and moved horizontally. Even in this case, the doors 9 and 10 may be fixed at the closed position P by using the above-described fifth folded portion 27, ninth folded portion 34, eighth folded portion 31, and second folded portion 23. Further, in the embodiment described above, the opening 13 can be opened and closed by the left door 9 and the right door 10, but unlike this, for example, it is opened by one door that is cantilevered on the guide rail and can be moved horizontally. The part 13 may be openable and closable. In this case, at the closed position P, the folded portion formed on the side edge of the front cover 6 and the folded portion formed on the side edge of the one door adjacent to the side edge are hooked and locked. Thus, the one door may be prevented from horizontally sliding in a direction away from the front cover 6. In this way, one door can be fixed to the front cover 6 with a simple structure in which the folded portion of the front cover 6 and the folded portion of one door are hooked and locked. In addition, the one door is not limited to a cantilever supported by a guide rail, and the upper end and the lower end of the one door may be supported so as to be horizontally slidable with respect to the guide rail.

  1 .... Vertical lathe, 2 .... bed, 6 .... front cover, 7 .... side cover, 8 .... rear cover, 9 .... left door, 10 .... right door, 13 .... opening, 15 ....・ Working space, 23... 2nd folding part, 27 .. 5th folding part, 31... 8 folding part, 34... 9 folding part, P .. closed position, W.

Claims (2)

In a machine tool that covers a machining space of a workpiece provided in a machine tool main body with a cover, and supports a door that opens and closes an opening formed in the cover so as to be slidable horizontally with respect to the main body. A door fixing structure in a machine tool for fixing the door in a closed position where an opening is closed,
In the closed position, when the door is bent and deformed, folded portions that are locked to each other and prevent the horizontal sliding movement of the door are provided on the cover and the end of the door adjacent to the cover, respectively. A door fixing structure in a machine tool characterized by being formed. The door is configured by a plurality of doors that are movable in the horizontal direction and are adjacent to each other in the closed position and can close the opening, and one of the plurality of doors is a part of the cover. Forming
2. The door fixing structure in a machine tool according to claim 1, wherein the folded portion is formed at an end portion of the one door and an end portion of the other door adjacent to the end portion. .

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