Vibration control structure of mechanical equipment and machine tool

Abstract

To enable replacement of vibration control rubber after mechanical equipment is disposed at a desired installation position in a vibration control structure of the mechanical equipment.SOLUTION: A vibration control structure of mechanical equipment includes: a bottom plate 41 of a control board 40; an installation surface 11a of an installation plate 11 on which the control board 40 is installed and which is disposed below the control board 40; vibration control rubber 50 disposed between the control board 40 and the installation surface 11a; and supporting means 60 which supports the control board 40 in a manner that the control board 40 moves between a state in which the control board 40 is in contact with the installation surface 11a and a state that the control board 40 is spaced apart from the installation surface 11a and placed on the vibration control rubber 50. The bottom plate 41 is provided with through holes 41c each of which allows the vibration control rubber 50 to pass from an area above the bottom plate 41 to the installation surface 11a in a state that the control board 40 is in contact with the installation surface 11a. The supporting means 60 pulls up the bottom plate 11 relative to the vibration control rubber 50 installed on the installation surface 11a through the through hole 41c to support the control board 40.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to an anti-vibration structure for machine equipment and a machine tool provided with this anti-vibration structure.

Background Art

[0002] For example, a machine tool includes a control panel as machine equipment for controlling operations of the machine tool such as rotation and movement of a spindle and a tool, and the control panel is disposed on the installation surface of the bed. The control panel may be installed on the installation surface of the bed of the machine tool via anti-vibration rubber.

[0003] Conventionally, an anti-vibration structure provided with anti-vibration rubber has been proposed under a machine equipment to be anti-vibrationally supported (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, it is not easy to provide anti-vibration rubber or replace it with anti-vibration rubber having different heights and hardnesses after installing the control panel at a desired installation position in the anti-vibration structure described in Patent Document 1.

[0006] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an anti-vibration structure for machine equipment that can easily install and replace anti-vibration rubber when installing the machine equipment at a desired installation position, and a machine tool provided with this anti-vibration structure.

Means for Solving the Problems

[0007] The first aspect of the present invention provides a vibration isolation structure for a machine equipment, which includes an elastic body disposed between the bottom surface of the machine equipment and the installation surface on which the machine equipment is installed. The bottom surface is formed with a through hole that allows the passage of the elastic body. The structure further includes a support member that supports the inner side of the bottom surface of the elastic body passing through the through hole, and a support means that supports the support member so as to be movable up and down with respect to the bottom surface. According to the up and down movement of the support member with respect to the bottom surface, the elastic body is protruded outside the bottom surface to press the elastic body against the installation surface.

[0008] The second aspect of the present invention provides a machine tool, which includes a main shaft for gripping and rotating a workpiece, a tool post having a tool that presses against the workpiece to process the workpiece, a bed member that movably supports the main shaft and the tool post, a control panel for controlling the operations of the main shaft and the tool, and the vibration isolation structure of the machine equipment according to the present invention. The machine tool uses the control panel as the machine equipment and the surface of the bed member as the installation surface.

Advantages of the Invention

[0009] The vibration isolation structure for a machine equipment and the machine tool according to the present invention can easily install and replace the vibration isolation rubber when installing the machine equipment at a desired installation position by passing an elastic body through a through hole in the bottom surface of the machine equipment, moving the support member up and down with respect to the bottom surface, and changing the distance between the bottom surface and the installation surface.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiment for Carrying Out the Invention

[0011] As shown in FIG. 1, in a lathe 100 (machine tool), a spindle is provided inside an exterior cover 20 attached to a bed 10 (bed member), and a tool post 30 for machining a workpiece gripped by the spindle is provided inside a machining chamber formed inside the opening / closing cover. Below the bed 10, a control panel 40 (machine equipment) is installed via a vibration-proof rubber 50 (an example of an elastic body) supported by a support means 60. The spindle grips a long bar-shaped workpiece (workpiece to be machined) and rotates it around its axis, and the workpiece is machined by tools such as a tool bit or a drill provided on the tool post 30.

[0012] The control panel 40 is arranged below the exterior cover 20 and installed on the installation plate 11 of the bed 10. As shown in FIG. 2, electronic devices such as electronic circuits and amplifiers, which are the main body part of the control panel 40, are provided on the bottom plate 41 (an example of a member forming the bottom surface) of the control panel 40. As shown in FIGS. 3, 4, and 5, a large number of through holes 41c that allow the passage of the vibration-proof rubber 50, which is an elastic body, are formed in the bottom plate 41 at predetermined intervals. Through holes 61d are formed in the bottom plate 41 at positions diagonal to each other with the through hole 41c interposed therebetween.

[0013] As shown in FIGS. 3 to 5, the vibration-proof rubber 50 is integrally formed with a rubber main body 51 formed in a cylindrical shape, an upper fixing member 53 having a male screw protruding upward from the upper surface 51a of the rubber main body 51, and a lower fixing member 52 having a male screw protruding downward from the lower surface 51b of the rubber main body 51.

[0014] The bracket 61 as a support member that supports the bottom plate 41 so as to be vertically movable from the inside is placed on the upper surface 51a of the vibration isolator rubber 50 and is elastically supported from below. In the present embodiment, the bracket 61 has a hat-shaped cross-sectional shape. The recessed portion 61a at the center of the hat shape is arranged in contact with the upper surface 51a of the rubber main body 51 of the vibration isolator rubber 50, and the through hole 61c formed in the recessed portion 61a penetrates and is inserted into the upper fixing member 53 of the vibration isolator rubber 50, and a nut 54 is screwed onto the upper fixing member 53 from above the bracket 61, and the bracket 61 is fixed to the rubber main body 51. Through holes 61d are formed in the two end portions 61b of the bracket 61.

[0015] The support means 60 includes a weld nut 63 (an example of an engaged portion) and a hexagonal socket bolt 62 (an example of a lifting member). The weld nut 63 is welded to the lower surface 41b at a position where the center of the weld nut 63 coincides with the center of the through hole 61d and is integrally fixed to the bottom plate 41. The hexagonal socket bolts 62 are screwed (engaged) into the screw grooves of the weld nuts 63 through the through holes 61d from above the bracket 61, and the bracket 61 supports the bottom plate 41.

[0016] In the installation plate 11, screw holes 11b corresponding to the through holes 41c formed in the bottom plate 41 are formed corresponding to the arrangement positions of the control panel 40. The control panel 40 is arranged on the installation plate 11 so that the centers of the through holes 41c formed in the bottom plate 41 of the control panel 40 coincide with the centers of the screw holes 11b formed in the installation plate 11, and the lower fixing member 52 is screwed into the screw holes 11b, whereby the control panel 40 is arranged at a predetermined position, the lower surface 51b of the rubber main body 51 is in contact with the installation surface 11a, and the vibration isolator rubber 50 is fixed to the installation plate 11.

[0017] The fixing of the vibration isolation rubber 50 and the bracket 61 can be carried out after fixing the vibration isolation rubber 50 to the installation plate 11. With the bracket 61 fixed to the vibration isolation rubber 50, by rotating each hexagonal socket bolt 62 in the direction of screwing it into the weld nut 63, the distance between the end portion 61b of the bracket 61 and the bottom plate 41 becomes shorter. However, while the recessed portion 61a of the bracket 61 resting on the vibration isolation rubber 50 presses the vibration isolation rubber 50 against the installation surface 11a, the weld nut 63 and the bottom plate 41 are pulled upward with reference to the recessed portion 61a, and the vibration isolation rubber 50 protrudes outside the bottom plate 41. The weld nut 63 and the bottom plate 41, which are at the lowermost part of the control panel 40, move away upward from the installation surface 11a of the installation plate 11.

[0018] As shown in FIG. 5, with the bottom plate 41 in contact with the end portion 61b of the bracket 61, the rotation of the hexagonal socket bolt 62 is stopped, and the weld nut 63 and the bottom plate 41 are integrated with the bracket 61. The control panel 40 is separated from the installation surface 11a and is installed on the installation plate 11 while being supported only by the rubber body 51 of the vibration isolation rubber 50.

[0019] Since the control panel 40 is installed on the installation plate 11 via the vibration isolation rubber 50, even if vibrations etc. caused by the machining of the workpiece are transmitted to the installation plate 11 of the lathe 100, the vibrations of the installation plate 11 are absorbed by the rubber body 51 of the vibration isolation rubber 50, thereby preventing or suppressing the transmission to the control panel 40. It is possible to prevent or suppress noises caused by the vibrations etc. and malfunctions etc. caused by the vibrations of the control panel 40 which is relatively sensitive to vibrations.

[0020] In the vibration isolation structure of the control panel 40 and the lathe 100 of the present embodiment, the bracket 61 can be removed by releasing the screwing engagement between the hexagonal socket bolt 62 and the weld nut 63 while the control panel 40 is installed at a predetermined position on the installation plate 11. And in the state where the bracket 61 is removed, since the vibration isolation rubber 50 can be easily removed from the screw hole 11b, the vibration isolation rubber 50 can be easily attached and detached.

[0021] Therefore, due to the vibration isolation structure of the control panel 40 and the automatic lathe 100 of the present embodiment, operators and the like can easily perform operations such as replacement work of the vibration isolation rubber 50 required due to deterioration of the vibration isolation rubber 50, replacement with other types of vibration isolation rubber 50 having different vibration absorption performance due to differences in materials of the rubber body 51, etc., change or addition of the installation position of the vibration isolation rubber 50 according to the vibration situation, etc., while the control panel 40 is placed at a predetermined position on the installation plate 11, from the bottom plate 41.

[0022] Note that the vibration isolation rubber 50 does not necessarily need to be fixed by the lower fixing member 52 or the like, and it is sufficient that the lower surface 51b of the rubber body 51 is in contact with the installation surface 11a. Also, when the thickness of the bottom plate 41 is sufficiently thick, instead of the weld nut 63, a screw groove that engages with the hexagon socket bolt 62 may be formed in the through hole 61d of the bottom plate 41, and this screw groove may also be used as the engaged portion of the supporting means in the present invention.

Explanation of Reference Numerals

[0023] 11 Installation plate 11a Installation surface 40 Control panel 41 Bottom plate 41c Through hole 50 Vibration isolation rubber 60 Supporting means 100 Automatic lathe

Claims

1. It is provided with an elastic body disposed between the bottom surface of the mechanical equipment and the installation surface on which the mechanical equipment is installed. The bottom surface is formed with a through hole that allows the passage of the elastic body. It is provided with a support member that supports the inside of the bottom surface of the elastic body passing through the through hole, and a support means that supports the support member so as to be movable up and down with respect to the bottom surface. An anti-vibration structure of mechanical equipment that projects the elastic body to the outside of the bottom surface according to the up and down movement of the support member with respect to the bottom surface, and presses the elastic body against the installation surface.

2. The support means includes an engaged portion formed on the bottom surface, and a lifting member provided on the side of the support member that engages with the engaged portion and, in a state where the elastic body abuts against the installation surface, pairs with the support member to lift the bottom surface. The anti-vibration structure of the mechanical equipment according to claim 1.

3. The engaged portion is a nut fixed to the bottom surface and formed with a thread groove, or a thread groove formed in a member forming the bottom surface. The lifting member is a bolt that screws into the thread groove. By rotating the bolt in a state of being screwed into the thread groove through the support member, the engaged portion is lifted in pair with the support member. The anti-vibration structure of the mechanical equipment according to claim 2.

4. The support member has at least two portions spaced above the engaged portion, sandwiching the portion in contact with the elastic body. The anti-vibration structure of the mechanical equipment according to claim 2.

5. The support member is detachably formed with respect to the elastic body. The anti-vibration structure of the mechanical equipment according to claim 2.

6. The mechanical equipment is a control panel that controls the operation of a machine tool. The anti-vibration structure of the mechanical equipment according to claim 1.

7. The elastic body is anti-vibration rubber. The anti-vibration structure of the mechanical equipment according to claim 1.

8. A spindle that grips and rotates a workpiece, a tool post having a tool that presses against the workpiece to machine the workpiece, a bed member that movably supports the spindle and the tool post, a control panel that controls the operations of the spindle and the tool, and an anti-vibration structure for the mechanical equipment according to any one of claims 1 to 7, and is provided with, a machine tool in which the mechanical equipment uses the control panel and the installation surface is the surface of the bed member.

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