JP2020019091A - Cover device of machine tool - Google Patents

Abstract

To provide a cover device of a machine tool which can be easily attached or detached without being fixed by a bolt and prevents displacement of a cover.SOLUTION: An attachment part 8 provided at a cover 4 is hooked on a groove-like support part 7 provided at a machine tool body to be fixed thereto. The attachment part 8 comprises: a first member 9 having a contact part 11 which contacts with a vertical wall 7b of the support part 7 from the front side; and a second member 10 having a contact part 15 which contacts with the vertical wall 7b of the support part 7 from the rear side. An elastic deformation part which comprises a first bending part 15a and a second bending part 15b and elastically deforms to exert biasing force on the vertical wall 7b of the support part 7 is provided at the contact part 11, 15 of at least one of the first member 9 and the second member 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cover device for a machine tool.

  There is a demand for an exterior decorative cover used in a machine tool to be devised so that bolts and the like do not protrude from the surface of the cover for aesthetic appearance.

  As a method of devising the bolt so as not to be visible when attaching such a decorative cover, there is a structure in which the bolt is stopped from the back side of the decorative cover. However, there is a problem that it is not easy to attach and detach the cover.

  As a cover device (41) for a machine tool that does not use bolts, as shown in FIG. 4, two metal fittings (42) and (43) are fixed to a cover (4), and these metal fittings (42) and (43) In some cases, the cover (4) is attached by hooking the provided claws (42a) (43a) on a guide rail (7) provided on the machine tool body.

  Further, in Patent Literature 1, as a cover device for a machine tool that does not use bolts, a plurality of fixing concave portions and a plurality of projecting portions are formed on a cover and a cover supporting portion, and the fixing concave portions and the projecting portions are engaged with each other. What has been done is disclosed.

WO 2016/125299

  According to the cover device (41) shown in FIG. 4, a pair of claws (42a) (43a) is hooked and fixed to the guide rail (7). If the gap is large, there is a problem that the position of the cover (4) shifts. By reducing the gap between the claws (42a) and (43a), the displacement of the cover (4) can be reduced, but in this case, there is a problem that the cover (4) becomes difficult to attach and detach.

  The cover device of Patent Literature 1 also fails to achieve both easy attachment and detachment of the cover and prevention of displacement of the cover.

  SUMMARY OF THE INVENTION It is an object of the present invention to provide a cover device for a machine tool that can be easily attached and detached without being fixed by bolts and that prevents the cover from being displaced.

  A cover device for a machine tool according to the present invention is a cover device for hooking and fixing an attachment portion provided on a cover to a groove-like support portion provided on a machine tool main body, wherein the attachment portion includes the support member. A first member having a contact portion abutting from a front side to a vertical wall of the portion, and a second member having a contact portion abutting from a rear side to the vertical wall of the support portion, wherein the first member and the first member An elastically deforming portion is provided at at least one contact portion of the two members, which elastically deforms and applies an urging force to the vertical wall of the support portion.

  At least one of the first member and the second member is provided with an elastic deformation portion that elastically deforms and applies an urging force to the vertical wall of the support portion. Can be sandwiched between the contact portion of the first member and the contact portion of the second member, and the displacement of the cover can be prevented. The attachment / detachment of the cover may be performed against the urging force from the elastically deformable portion, and since the direction of the urging force and the direction of attachment / detachment are substantially orthogonal, the attachment / detachment of the cover can be easily performed.

  The elastically deformable portion may be constituted by a member (for example, a compression coil spring, a disc spring, or the like) different from the first member or the second member, and may be formed by forming the first member or the second member. The plate member may be bent to be formed integrally with the first member or the second member. Further, the elastically deforming portion may be provided on any one of the first member and the second member, and may be provided on both the first member and the second member. .

  The elastically deforming portion is preferably formed by bending a part of the plate material so as to be elastically deformable.

  The elastically deforming portion is formed, for example, by bending a part of a plate material in a V-shape in a horizontal direction. This makes it difficult for rattling to occur even when the cover is repeatedly attached and detached, and it is possible to prevent displacement of the cover and maintain ease of attaching and detaching the cover for a long period of time.

  ADVANTAGE OF THE INVENTION According to the cover apparatus of the machine tool of this invention, a cover can be fixed without a position shift, while being easily removable, without fixing with a bolt.

FIG. 1 is a vertical sectional view showing one embodiment of a cover device for a machine tool according to the present invention. FIG. 2 is a vertical sectional view showing an intermediate state of mounting the cover in the cover device for a machine tool according to the present invention. FIG. 3 is a perspective view showing an example of a machine tool using the machine tool cover device of the present invention. FIG. 4 is a vertical sectional view showing a cover device of a conventional machine tool.

  Hereinafter, an embodiment of a cover device for a machine tool according to the present invention will be described with reference to FIGS. In the following description, the right of FIG. 1 is referred to as front, the left is referred to as rear, and the up and down of FIG. 1 is referred to as up and down.

  FIG. 3 shows the appearance of a machine tool using the machine tool cover device (2) of the present invention. In FIG. 3, the machine tool (1) has covers (3) and (4), an operation panel (5), a slide door (6), and the like that cover a machine tool main body (not shown because it is a configuration inside the cover). ing.

  The covers (3) and (4) usually have a fixed cover (3) formed in a box shape as a whole, which is not likely to be detached, and an exterior decorative cover (4) that is relatively frequently attached and detached. The cover device (2) for a machine tool according to the present invention is applied to a decorative cover (4).

  One embodiment of a cover device (2) for a machine tool according to the present invention is shown in FIGS. 1 shows a state after the cover (4) is attached, and FIG. 2 shows a state in which the cover (4) is being attached (the same applies when the cover (4) is removed).

  The cover device (2) of the machine tool includes a guide rail (a groove-shaped support portion) (7) provided on the machine tool body, a plate-shaped cover (4) attached to the guide rail (7) from the front side, And a mounting portion (8) for hooking and fixing the cover (4) to the guide rail (7).

  The guide rail (7), the cover (4), and the mounting portion (8) have a cross-sectional shape shown in FIGS. 1 and 2, and extend in a direction perpendicular to the paper surface.

  The guide rail (7) has a substantially U-shaped vertical cross section, and includes a horizontal bottom wall (7a), a vertical front wall (7b), and a vertical rear wall (7c). The rear wall (7c) is higher than the front wall (7b).

  The mounting portion (8) includes a first metal fitting (first member) (9) and a second metal fitting (second member) (10) fixed to the rear surface of the cover (4).

  The first metal fitting (9) has a vertical abutting portion (11) abutting against the front wall (7b) of the guide rail (7) from the front side, and a cover (4) at a position lower than the abutting portion (11). A vertical fixing portion (12) fixed to the rear surface of the contact portion, an inclined connecting portion (13) connecting a lower edge of the contact portion (11) and an upper edge of the fixing portion (12), The front edge comprises a horizontal second metal fitting receiving portion (14) fixed to the rear surface of the cover (4).

  The second metal fitting (10) has a lateral V-shaped contact part (15) where the crossing part contacts the front wall (7b) of the guide rail (7) from the rear side, and is higher than the contact part (15). A vertical fixing portion (16) fixed to the rear surface of the cover (4) at a position, and a horizontal connecting portion () connecting the upper edge of the contact portion (15) and the lower edge of the fixing portion (16). 17).

  The contact part (15) of the second metal fitting (10) is formed so as to face the contact part (11) of the first metal fitting (9) via the front wall (7b) of the guide rail (7). The connecting portion (17) of the second fitting (10) is formed so as to overlap the upper side of the second fitting receiving portion (14) of the first fitting (9).

  The abutment portion (15) of the second metal fitting (10) formed in a laterally V-shape has a first bent portion (15a) forming an acute angle with the connecting portion (17) when processing a plate material, and a first bent portion. This is obtained by forming a second bent portion (15b) substantially perpendicular to (15a). Thus, the contact portion (15) of the second metal fitting (10) having a V-shape in the horizontal direction is easily elastically deformed substantially in the front-rear direction.

  The shape of the horizontal V-shaped contact portion (15) of the second metal fitting (10) before attachment is slightly different from that of FIG. 1, and as shown in FIG. A gap (G) smaller than the plate thickness of 7b) is opposed to the contact portion (11) of the first metal fitting (9). Therefore, when the state shown in FIG. 1 is changed from the state before the attachment (or after the detachment) in FIG. 2, the first bent portion (15a) and the second bent portion of the contact portion (15) of the second metal fitting (10). The lateral V-shaped part consisting of the part (15b) functions as an elastic deformation part that elastically deforms, the contact part (15) of the second metal fitting (10) elastically deforms rearward, and It exerts a biasing force on the wall (7b). As a result, the front wall (7b) of the guide rail (7) is connected to the vertical contact portion (11) of the first metal fitting (9) and the V-shaped contact portion (15) of the second metal fitting (10). ).

  The attachment of the cover (4) shown in FIGS. 2 to 1 and the removal of the cover (4) shown in FIGS. 1 and 2 are performed against the urging force of the contact portion (15) of the second metal fitting (10). Since the direction of the urging force of the contact portion (15) of the second metal fitting (10) and the direction of attachment and detachment are substantially orthogonal to each other, these operations can be easily performed.

  Thus, according to the cover device (2), the problem that the cover (4) in the cover device (41) shown in FIG. The problem that removal becomes difficult is also prevented.

  In FIG. 2, the gap (G) between the contact part (15) of the second metal fitting (10) and the contact part (11) of the first metal fitting (9) is defined by the front wall (G) of the guide rail (7). The thickness may be smaller than 7b), and may be zero. The shape of the contact portion (15) of the second metal fitting (10) is not limited to the V-shape in the horizontal direction. For example, the second bent portion (15b) may be omitted, and the guide rail (7) Various shapes are possible as long as the shape exerts an urging force on the front wall (7b). The contact portion of the second metal fitting (10) is formed vertically with a gap between the second metal fitting (10) and the front wall (7b) of the guide rail (7), and a spring (e.g., a disc spring) as an elastic deformation part is formed in the second metal fitting. You may make it fix to the front surface of a contact part of (10).

(2): Cover device
(4): Makeup cover (cover)
(5): Operation panel
(7): Guide rail (groove-shaped support)
(7b): Front wall (vertical wall)
(8): Mounting part
(9): First fitting (first member)
(10): Second fitting (second member)
(11): Contact part
(15): Contact part

Claims (3)

A cover device for hooking and fixing an attachment portion provided on a cover to a groove-like support portion provided on a machine tool body,
The mounting portion includes a first member having a contact portion that contacts the vertical wall of the support portion from the front side, and a second member having a contact portion that contacts the vertical wall of the support portion from the rear side, An elastically deforming portion, which elastically deforms and applies an urging force to a vertical wall of the support portion, is provided at at least one contact portion of the first member and the second member. Cover device.   The cover device for a machine tool according to claim 1, wherein the elastic deformation portion is formed by bending a part of the plate material so as to be elastically deformable.   The cover device for a machine tool according to claim 1, wherein the elastically deforming portion is formed by bending a part of a plate material in a V-shape in a horizontal direction.

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