JP2017040287A - Vibration suppression device and processing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration suppression device that can efficiently suppress vibration and sound by a simple structure, has a compact body and is capable of reducing manufacturing cost, and to provide a processing machine.SOLUTION: The vibration suppression device 1 includes: multiple plate-like members 2 disposed while being laminated on a base material 4, in which a slit 5 is formed in at least one of them; and a stationary plate 3 holding the multiple plate-like members 2 between the base material 4 and the stationary plate and fixed to the base material 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vibration damping device and a processing machine.

  When a processing machine such as a punch press processes a workpiece, a radiated sound is generated by vibration from a part of the processing machine (for example, a panel forming an outline). Conventionally, as a method of suppressing vibration of a processing machine, the vibration is suppressed by filling the processing machine with concrete or sand, but this leads to an increase in the size or weight of the processing machine. . Further, as a damping device for suppressing sound and vibration of various industrial machines, a damping device having a laminated structure in which a plurality of plates made of a damping material or a metal material is laminated has been proposed (for example, the following patent document) 1-3).

JP 2000-203576 A JP 2002-048188 A JP 2004-293648 A

  The vibration damping device described in the above-mentioned patent document employs a constrained vibration damping structure, and although there is an effect of improving the sound quality of the high frequency band to some extent, a sufficient vibration and sound suppression effect cannot be obtained. . Therefore, it is required to efficiently suppress the vibration of the processing machine to be mounted while adopting the constraint type vibration damping structure.

  In view of the circumstances as described above, it is an object of the present invention to provide a vibration damping device and a processing machine that can efficiently suppress vibration and sound with a simple structure, are compact, and can reduce manufacturing costs. And

  A vibration damping device according to the present invention is arranged by laminating a plurality of sheets on a base material, and sandwiching a plurality of plate-shaped members between the base material and at least one plate-shaped member, And the fixing board 3 fixed to a preform | base_material is provided.

  Further, the fixed plate may be thicker than the plate-like member. Further, three or more plate-like members may be stacked, and the slit may be formed in each of the plate-like members. In addition, each of the plurality of plate-like members may be formed with substantially the same slits. Further, the slit may be formed in a cross shape that intersects at a substantially central portion of the plate-like member. Further, the fixing plate may be fixed to the base material by a fastening member that penetrates the plate-like member. In addition, the fastening members may be fixed to the base material at four places near the four corners of the fixing plate, or at five places in almost one central portion in addition to the four places.

  The vibration damping device according to the present invention includes a first plate-like member arranged in a plurality of layers on a base material, and a second plate arranged in a row on the first plate member in a plurality of layers on the base material. A plate-shaped member, and a fixed plate that is sandwiched between the first plate-shaped member and the second plate-shaped member between the base material and fixed to the base material.

  Moreover, the processing machine which concerns on this invention is a processing machine which processes the workpiece | work W, Comprising: The said damping device is provided. In addition, the vibration damping device may be disposed in a recess formed in a part of the processing machine.

  According to the vibration damping device of the present invention, vibration and sound can be efficiently suppressed with a simple configuration in which a slit is formed in a plate-shaped member, and the manufacturing cost can be reduced with a compact configuration.

  Moreover, when a thing thicker than a plate-shaped member is used, since a several plate-shaped member is pinched | interposed reliably with a fixed plate, a vibration and a sound can be suppressed effectively. In addition, when three or more plate-like members are stacked and the slit is formed in each plate-like member, sliding between the plate-like members is increased, and vibration and sound can be effectively suppressed. In addition, when each of the plurality of plate-like members is formed with substantially the same slit, the formation of the plurality of plate-like members is facilitated, and the manufacturing cost can be reduced. In addition, when the slit is formed in a cross shape that intersects substantially at the center of the plate-shaped member, the cross-shaped slit facilitates deformation of the plate-shaped member, and vibration can be efficiently suppressed. Further, when the fixing plate is fixed to the base material by a fastening member penetrating the plate-like member, a state in which the plurality of plate-like members are in close contact with each other can be easily formed by the fastening member. In addition, when the fastening member is fixed to the base material at four locations near the four corners of the fixing plate, or in addition to these four locations, and at five locations of approximately one central portion, the plate-shaped member is held in a balanced manner. be able to.

  In addition, according to the vibration damping device of the present invention, vibration and vibration can be achieved with a simple configuration in which a plurality of stacked first plate members and a similarly stacked second plate member are sandwiched and fixed by a fixed plate. Sound can be suppressed efficiently, and it is compact and manufacturing cost can be reduced.

  Moreover, according to the processing machine which concerns on this invention, since the above-mentioned damping device is provided, a vibration and a sound are suppressed efficiently. Further, since the vibration damping device is compact and inexpensive, the processing machine is also compact and the manufacturing cost can be reduced. Further, when the vibration damping device is disposed in a recess formed in a part of the processing machine, it can be avoided that the vibration damping device protrudes from the processing machine and is mounted.

It is a figure which shows an example of the damping device which concerns on 1st Embodiment, (A) is a side view, (B) is a top view. (A) is a figure which shows an example of a plate-shaped member, (B) is a figure which shows operation | movement of the damping device at the time of the vibration of a base material. It is a figure which shows an example of the damping device which concerns on 2nd Embodiment, (A) is a side view, (B) is a top view, (C) is a figure which shows a plate-shaped member. (A)-(C) are top views which show the modification of a plate-shaped member. It is a figure which shows an example of the damping device which concerns on 3rd Embodiment, (A) is a side view, (B) is a top view. (A) is a figure which shows an example of a 1st plate-shaped member and a 2nd plate-shaped member, (B) is a figure which shows the other example of a 1st plate-shaped member and a 2nd plate-shaped member. (A) is a perspective view which shows the processing machine which concerns on embodiment, (B) is sectional drawing along the AA line shown to (A). It is a figure which shows the data of an Example and a comparative example, (A) is a loss factor, (B) and (C) are figures which show a phase and a transfer function. It is a figure which shows the data of an Example and a comparative example, (A) is a loss factor, (B) and (C) are figures which show a phase and a transfer function.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to this. In addition, in the drawings, in order to describe the embodiments, a part or the whole is schematically described, and a part expressed by changing the scale as appropriate, for example, a part is enlarged or emphasized. In the following drawings, directions in the drawings will be described using an XYZ coordinate system. In this XYZ coordinate system, a plane parallel to the horizontal plane is defined as an XY plane. An arbitrary direction parallel to the XY plane is expressed as an X direction, and a direction orthogonal to the X direction is expressed as a Y direction. A direction perpendicular to the XY plane (up and down direction) is referred to as a Z direction. In each of the X direction, the Y direction, and the Z direction, the direction of the arrow in the figure is the + direction, and the direction opposite to the arrow direction is the − direction.

<First Embodiment>
The vibration damping device according to the first embodiment will be described with reference to the drawings. 1A and 1B are diagrams showing an example of a vibration damping device, where FIG. 1A is a side view seen from the −Y direction, and FIG. 1B is a plan view. FIG. 2A shows an example of a plate member. As shown in FIG. 1A, the vibration damping device 1 according to this embodiment includes a plate-like member 2 and a fixed plate 3.

  Three plate-like members 2 are stacked on the base material 4 and arranged. The base material 4 is a portion where vibration occurs, and is, for example, a frame or panel of an industrial machine such as a processing machine. The plurality of plate-like members 2 are not bonded to each other, are stacked in contact with each other, and can slide on each other. The external shapes of the plurality of plate-like members 2 are respectively the same rectangular flat plate shape (see FIG. 2A). The size of each plate-like member 2 is arbitrary. Each plate-like member 2 has a thickness T1 (see FIG. 1A) of 0.5 to 2.5 mm. In the present embodiment, each plate-like member 2 has a thickness T1 of 1.0 mm. Set to When the thickness T1 of each plate member 2 is 0.5 to 2.5 mm, the plate member 2 can be easily deformed. Each plate member 2 is a steel plate. When the plate-like member 2 is a steel plate, it has excellent durability and is easy to obtain and process.

  In addition, the plate-like member 2 is not limited to being laminated, and for example, two or four or more may be used. Further, the outer shape of the plate-like member 2 may not be a rectangular flat plate, and may be, for example, a triangular flat plate or a polygonal flat plate having a pentagon or higher, or a flat plate shape including a circular or elliptical curve. The plurality of plate-like members 2 are not limited to having the same shape, and may be different from each other. Moreover, thickness T1 of each plate-shaped member 2 may differ. Further, the plate-like member 2 may be, for example, a metal plate other than steel or a plate-like resin instead of the steel plate. The plurality of plate-like members 2 are not limited to being made of the same material, and may be different from each other. The number, thickness T1, and shape of the plate-like member 2 are appropriately determined according to the vibration to be mounted.

  Each of the plurality of plate-like members 2 is formed with a slit 5 (see FIG. 2A). By forming the slit 5, the plate-like member 2 can be easily deformed. The slit 5 has a cross shape that intersects at substantially the center of the plate-like member 2 and extends in the X direction and the Y direction. Since the slit 5 has a cross shape that intersects at almost the center of the plate-like member 2, the deformation of the plate-like member 2 is facilitated, the sliding amount between the plate-like members 2 increases, and vibrations are efficiently heat energy. The vibration can be effectively suppressed by converting to

  Each of the plurality of plate-like members 2 is formed with slits 5 having substantially the same shape. As a result, the deformation of each plate-like member 2 is increased, and the mutual sliding amount is increased, so that vibration can be more effectively suppressed. Moreover, since the substantially identical slit is formed in each of the plurality of plate-like members 2, the plate-like member 2 can be easily formed, and the manufacturing cost can be reduced. In addition, the shape of the slit 5 is arbitrary. For example, the slits 5 may be formed radially around a portion that becomes an antinode of vibration in the main vibration mode of the base material 4 (the plurality of plate-like members 2). In this case, since the portion of the slit 5 is located at the antinode of vibration, the deformation of the plate-like member 2 becomes large, and vibration and sound can be effectively suppressed. The number of slits 5 is arbitrary. For example, a plurality of slits 5 may be provided.

  As shown in FIG. 2A, in the slit 5, the width W1 of the portion parallel to the Y direction and the width W2 of the portion parallel to the X direction are each set to about 1.0 mm. The width W1 and the width W2 of the slit 5 are arbitrary, and are set in the range of 0.5 to 2.0 mm. The width W1 and the width W2 may be the same or different. Further, the length L1 in the X direction and the length L2 in the Y direction of the slit 5 are 60% or more with respect to the length in the X direction of the plate member 2, and the length in the Y direction of the plate member 2 respectively. On the other hand, it is 60% or more. Thereby, the deformation | transformation of the plate-shaped member 2 can be enlarged. The lengths L1 and L2 are arbitrary, and are less than 60% with respect to the length of the plate member 2 in the X direction and less than 60% with respect to the length of the plate member 2 in the Y direction. May be.

  Note that the slits 5 may not be formed in all of the plurality of plate-like members 2. For example, the slit 5 may be formed in at least one plate-like member 2. Further, the plurality of plate-like members 2 may not have the same shaped slits 5 formed respectively. For example, the plurality of plate-like members 2 may be formed with different slits 5.

  Each of the plurality of plate-like members 2 has four through holes 6 (see FIG. 2A). The four through-holes 6 are respectively arranged at four locations near the four corners. These through holes 6 are used for inserting fastening members 7 described later. In addition, the number and position of the through-hole 6 are each set according to the number and position of the fastening member 7 mentioned later.

  As shown in FIG. 1, the fixed plate 3 is arranged so as to sandwich a plurality of plate-like members 2 with the base material 4. The fixed plate 3 has the same shape as the plate-like member 2 when viewed from above (+ Z direction) (in plan view), and has a rectangular plate shape. The thickness T2 (see FIG. 1A) of the fixed plate 3 is set to be thicker than the thickness T1 of the plate-like member 2. Since the thickness T <b> 2 of the fixing plate 3 is thicker than the thickness T <b> 1 of the plate-like member 2, the plurality of plate-like members 2 can be firmly sandwiched by the fixing plate 3. In addition, when the thickness T2 of the fixed plate 3 is set to be twice or more the thickness T1 of the plate-like member 2, vibration and sound can be more effectively suppressed. The thickness of the fixed plate 3 is set to about 3.0 mm. As the fixed plate 3, a steel plate is used similarly to the plate-like member 2.

  Note that the fixed plate 3 is not limited to the same shape or material as the plate-like member 2, and the fixed plate 3 may be larger than the plate-like member 2, for example. Further, the thickness T2 of the fixed plate 3 can be set to an arbitrary thickness. The material of the fixed plate 3 is arbitrary, and may be, for example, a metal plate other than steel or a plate-like resin in addition to the steel plate. Moreover, the material of the fixing plate 3 and the plurality of plate-like members 2 may not be the same or different.

  The fixing plate 3 is fixed to the base material 4 by four fastening members 7. For example, a bolt is used as the fastening member 7. The fixing plate 3 has four through holes 8. The four through holes 8 are respectively arranged at four locations near the four corners of the fixed plate 3. The fastening member 7 passes through the through hole 6 of the plate-like member 2 and the through hole 8 of the fixing plate 3 and is fastened by a screw hole (not shown) provided in the base material 4, and the fixing plate 3 is fixed to the base material 4. Is done. When the fastening member 7 is fixed to the base material at four locations close to the four corners of the fixing plate, the plate-like member 2 can be held in a balanced manner. Further, since the fixing plate 3 is fixed to the base material 4 by the fastening member 7 penetrating the plate-like member 2, a state in which the plurality of plate-like members 2 are in close contact with each other can be easily formed. Thereby, it can deform | transform in the state which the some plate-shaped member 2 mutually contacted, and can convert vibration energy into the heat energy by the friction of the plate-shaped members 2 efficiently as mentioned later.

  Note that the number of the fastening members 7 is not limited to four, and may be five, two to three, six or more as described later, for example. The fastening member 7 also functions as a restraining member that restrains the plate-like member 2. For this reason, the number of fastening members 7 is set according to the natural frequency of base material 4 which vibrates, for example. Further, the fixing plate 3 may be a member in which the plate-like member 2 is sandwiched between the base material 4 by a clamp or the like instead of the fastening member 7. Further, for example, the fixing plate 3 and the base material 4 may be fixed with an adhesive (resin) in a state where the plurality of plate-like members 2 are sandwiched. In addition, when not using the fastening member 7, the through-hole 6 of the plate-shaped member 2 and the through-hole 8 of the fixing plate 3 are not necessary.

  Next, the operation of the vibration damping device 1 will be described. FIG. 2B is a diagram illustrating the operation of the vibration damping device when the base material 4 is vibrated. As shown in FIG. 2B, when the base material 4 vibrates, each of the plurality of plate-like members 2 stacked on the base material 4 is deformed following the vibration of the base material 4, Slide against each other. When the plurality of plate-like members 2 are deformed, friction is generated between the plate-like member 2 and the plate-like member 2, and the vibration energy of the base material 4 is converted into heat energy due to friction between the plate-like members 2. The vibration of the material 4 is suppressed. By suppressing the vibration of the base material 4, sound due to the vibration is also suppressed. In the vibration damping device 1 of the present embodiment, since the slits 5 are formed in the plate-like member 2 as described above, the deformation of each plate-like member 2 is easy, and the sliding amount between the plate-like members 2 increases. . Thereby, the heat energy by friction also becomes large, the conversion amount of vibration energy becomes large, and the vibration of the base material 4 can be suppressed efficiently.

  As described above, the vibration damping device 1 according to the present embodiment can efficiently suppress vibration and sound of the base material 4 with a simple configuration in which the slit 5 is formed in the plate-like member 2, is compact, and has a low manufacturing cost. Can be reduced.

Second Embodiment
Next, a vibration damping device 1A according to a second embodiment will be described with reference to the drawings. In the following embodiments, the same components as those in the above-described embodiments are denoted by the same reference numerals, and the description thereof is simplified or omitted. In addition, among the matters described in the above embodiments, those applicable to each embodiment are also applied to this embodiment as appropriate.

  3A and 3B are diagrams illustrating an example of a vibration damping device 1A according to the second embodiment, in which FIG. 3A is a side view seen from the −Y direction, FIG. 3B is a plan view, and FIG. FIG. The vibration damping device 1A according to the present embodiment includes a plate-like member 2A and a fixed plate 3A. The vibration damping device 1A according to the present embodiment is different from the first embodiment in that five fastening members 7 are used, and accordingly, the shapes of the fixed plate 3A and the plate-like member 2A are also different from the first embodiment. Yes. Two plate-like members 2 </ b> A are arranged so as to be laminated on the base material 4. In the plurality of plate-like members 2A, the outer shape, size, thickness T1 (see FIG. 3A), and material are the same as those in the first embodiment.

  Each of the plurality of plate-like members 2A is formed with two slits 5A and two slits 5B. The two slits 5A extend along the line AX1 in the Y direction across the substantially central portion of the plate-like member 2A (see FIG. 3C). Further, the two slits 5B extend along the line AX2 in the X direction across the substantially central portion of the plate-like member 2A (see FIG. 3C). The slits 5A and 5B are arranged in a cross shape so as to intersect at substantially the center of the plate-like member 2A. The plate-like member 2A is easily deformed by the slits 5A and 5B as in the first embodiment, and sliding between the plate-like members 2A is increased. Further, the two slits 5A and 5B may be formed radially around the antinode of the main vibration mode of the base material 4 in the same manner as the slit 5 of the first embodiment.

  The length L3 of the slit 5A is set to 30% or more with respect to the length of the plate member 2A in the Y direction. Therefore, when the two slits 5A are totaled, the length is set to 60% or more with respect to the length of the plate-like member 2A in the Y direction. The length L4 of the slit 5B is set to 30% or more with respect to the length of the plate member 2A in the X direction. Therefore, when the two slits 5B are totaled, it is set to 60% or more with respect to the length of the plate-like member 2B in the X direction. The width W3 of the slit 5A and the width W4 of the slit 5A are set to about 1 mm as in the first embodiment, but may be set to 0.5 to 2.0 mm.

  Note that the slits 5A and 5B may not be formed in all of the plurality of plate-like members 2A. For example, the slits 5A and 5B may be formed in at least one plate-like member 2A. In addition, the plurality of plate-like members 2A are not limited to the formation of the slits 5A and 5B having the same shape, and the slits 5A and 5B having different shapes may be formed. Further, the width W3 of the slit 5A and the width W4 of the slit 5B may be different. Further, the length L3 of the slit 5A may be less than 30% with respect to the length of the plate member 2A in the Y direction, and the length L4 of the slit 5B is the length of the plate member 2A in the X direction. On the other hand, it may be less than 30%.

  Each of the plurality of plate-like members 2A has five through holes 6 (see FIG. 3B). The plurality of through-holes 6 are respectively arranged at five locations of approximately one central portion in addition to the four locations near the four corners.

  As shown in FIG. 3A, the fixed plate 3 </ b> A is disposed so as to sandwich the plurality of plate-like members 2 </ b> A with the base material 4. The outer shape, thickness T2, and forming material of the fixing plate 3A are the same as those in the first embodiment. The fixing plate 3A is the same as in the first embodiment in that it is thicker than the plate-like member 2A. The fixing plate 3A is provided with five through holes 8. The five through-holes 8 are arranged at approximately five locations in one central portion in addition to the four locations near the four corners. The fixing plate 3 </ b> A is fixed to the base material 4 by five fastening members 7. The five fastening members 7 pass through the through holes 6 of the plate-like member 2 </ b> A and the through holes 8 of the fixing plate 3 </ b> A, and are fastened by screw holes (not shown) provided in the base material 4. When the fixing plate 3A is fixed to the base material 4 by the fastening member 7, the plurality of plate-like members 2A are held in close contact with each other. Since the fixing plate 3A is fixed to the base material 4 at five locations of approximately one central portion in addition to the four locations close to the four corners, the plate-like member 2A is held in a manner different from the first embodiment.

  Next, the operation of the vibration damping device 1A will be described. The operation of the vibration damping device 1A is the same as that of the first embodiment. The vibration energy of the base material 4 is converted into heat energy by friction of the plurality of plate-like members 2A, and the vibration of the base material 4 is suppressed. Since the vibration damping device 1A includes the two slits 5A and 5B in the plate-like member 2A, the deformation amount of the plate-like member 2A is increased, and the amount of sliding between the plate-like members 2A is increased so that vibration is effectively generated. Can be suppressed. In addition, since the damping device 1 </ b> A has a larger number of fastening members 7 than the first embodiment, the force to be fixed to the base material 4 is improved.

  As described above, the vibration damping device 1A of the present embodiment can efficiently suppress vibration and sound with a simple configuration in which the two slits 5A and 5B are formed in the plate-like member 2A, is compact, and has a low manufacturing cost. Can be reduced.

<Modification>
Next, a plate member according to a modification will be described with reference to the drawings. In the following embodiments, the same components as those in the above-described embodiments are denoted by the same reference numerals, and the description thereof is simplified or omitted. 4A to 4C are plan views showing modifications of the plate-like member. In the above-described embodiment, the slit 5 of the plate-like member 2 and the slits 5A and 5B of the plate-like member 2A have been described, but the shape and number of slits formed in the plate-like member are arbitrary.

  As shown in FIG. 4A, the plate-like member 2B is formed with a cross-shaped slit 5C that intersects at substantially the center of the plate-like member 2B. The slit 5C is formed along a line AX3 obtained by rotating the line AX2 45 ° counterclockwise about the center O and a line AX4 obtained by rotating the line AX2 45 ° clockwise about the center O. . In addition, in line AX3, AX4, the angle with respect to line AX2 is not limited to 45 degrees, but is arbitrary. As shown in FIG. 4B, the plate-like member 2C is formed with slits 5D along the lines AX1, AX2, AX3, and AX4. As shown in FIG. 4C, the plate-like member 2D is formed with two cross-shaped slits 5E arranged in the X direction.

  As another modification of the plate-like member, although not shown, the plate-like member 2 or the like may include a slit along any one of the lines AX1, AX2, AX3, and AX4. That is, only one slit may be formed. Moreover, the plate-like members 2B to 2D shown in FIGS. 4A to 4C may use five fastening members 7 as in the second embodiment. In this case, you may provide the through-hole 8 in the center part of plate-shaped member 2B-2D. When the through-hole 8 is provided in the central portion, the above-described slits 5B to 5E may each have a shape divided at the central portion as in the second embodiment.

  Even in the above-described modification, vibration and sound can be efficiently suppressed with a simple configuration in which the slits 5C to 5E are formed in the plate-like members 2B to 2D, and the size and manufacturing cost can be reduced.

<Third Embodiment>
Next, a vibration damping device 1B according to a third embodiment will be described with reference to the drawings. In the following embodiments, the same components as those in the above-described embodiments are denoted by the same reference numerals, and the description thereof is simplified or omitted. Of the matters described in the above-described embodiments, those applicable to the present embodiment are also applied to the present embodiment as appropriate.

  5A and 5B are diagrams illustrating an example of a vibration damping device 1B according to the third embodiment. FIG. 5A is a side view viewed from the −Y direction, and FIG. 5B is a plan view. The vibration damping device 1B according to the present embodiment includes a first plate-like member 2E, a second plate-like member 2F, and a fixed plate 3. The first plate-like member 2E and the second plate-like member 2F are arranged so as to be laminated on the base material 4 respectively. The same number of the first plate-like member 2E and the second plate-like member 2F are stacked. When the thickness of the 1st plate-shaped member 2E and the 2nd plate-shaped member 2F is the same, it sets so that the height of each laminated body may become the same. Note that the first plate-like member 2E and the second plate-like member 2F are not limited to being laminated three, but may be, for example, two or four or more. The laminated body of the first plate-like member 2E and the laminated body of the second plate-like member 2F are arranged on the base material 4 side by side with a predetermined gap S therebetween. The width W5 of the gap S is set to 1.0 mm, for example, but is not limited thereto, and may be set to 0.1 to 2.0 mm, for example.

  FIG. 6A is a diagram illustrating an example of the first plate-like member 2E and the second plate-like member 2F. As shown in FIG. 6A, the first plate-like member 2E and the second plate-like member 2F have substantially the same outer shape, but may be different from each other. Note that the thickness and material of the first plate-like member 2E and the second plate-like member 2F are the same as those in the first and second embodiments, respectively. The gap S between the first plate-like member 2E and the second plate-like member 2F extends in the Y direction, but is not limited thereto, for example, the X direction or a direction inclined with respect to the Y direction, etc. It can be set arbitrarily. Each of the first plate-like member 2E and the second plate-like member 2F has two through holes 6. Each of the through holes 6 is formed in a portion close to two of the four corners.

  As shown in FIG. 5A, the first plate-like member 2E and the second plate-like member 2F are arranged in a state of being sandwiched between the base material 4 by one fixed plate 3. The fixing plate 3 is fixed to the base material 4 by the fastening member 7 through the through holes 6 of the first plate-like member 2E and the second plate-like member 2F. The first plate-like member 2E and the second plate-like member 2F are held by two fastening members 7, respectively.

  Next, the operation of the vibration damping device 1B will be described. The operation of the vibration damping device 1B is substantially the same as in the first and second embodiments. The vibration energy of the base material 4 is converted into thermal energy by friction between the plurality of first plate-like members 2E and the second plate-like members 2F, and the vibration of the base material 4 is suppressed. In the vibration damping device 1B, the first plate-like member 2E and the second plate-like member 2F are arranged with a gap S therebetween, so that the amount of deformation of each of the first plate-like member 2E and the second plate-like member 2F increases. The sliding amount between the first plate-like member 2E or the second plate-like member 2F can be increased to effectively suppress the vibration.

  As described above, the vibration damping device 1B according to the present embodiment fixes the first plate member 2E stacked and the second plate member 2F stacked in the same manner to the base material 4 with the fixing plate 3 sandwiched therebetween. The vibration and sound of the base material 4 can be efficiently suppressed with a simple configuration, and the manufacturing cost can be reduced while being compact.

  The first plate-like member 2E and the second plate-like member 2F may be formed with slits as shown in the first or second embodiment. FIG. 6B is a diagram illustrating a first plate member 2G and a second plate member 2H according to another example. As shown in FIG. 6B, the first plate-like member 2G is formed with a slit 5F extending in the −X direction from the gap S side. Similarly, the second plate-like member 2H is formed with a slit 5G extending in the + X direction from the gap S side. The width W6 of the slit 5F and the slit 5G is set to 1.0 mm, but is not limited thereto, and may be set to a range of 0.5 to 2.0 mm, for example. Moreover, although the slit 5F and the slit 5G are formed symmetrically with respect to the gap S, the slit 5F and the slit 5G are not limited to this, and may be slits having different shapes. Moreover, a slit does not need to be formed in any one of the 1st plate-shaped member 2G and the 2nd plate-shaped member 2H.

  Thus, by forming the slit 5F and the slit 5G, the deformation amount of each of the first plate member 2G and the second plate member 2H is further increased, and the first plate member 2G or the second plate member. By further increasing the sliding amount between 2H, vibration can be more effectively suppressed. In FIG. 6, the fixing plate 3 is fixed to the base material 4 by the four fastening members 7, but instead of this, a fixing plate 3 </ b> A as shown in the second embodiment is used. Also good. In this case, the fixing plate 3 </ b> A is sandwiched between the first plate member 2 </ b> G and the second plate member 2 </ b> H with the base material 4 and is fixed to the base material 4 with the five fastening members 7.

<Processing machine>
Next, the processing machine 10 according to the embodiment will be described. FIG. 7A is a perspective view showing the processing machine 10 according to the embodiment, and FIG. 7B is a view showing a cross section taken along the line AA shown in FIG. The processing machine 10 in this embodiment is a press machine as an example of the processing machine 10 that processes the workpiece W. The processing machine 10 includes the vibration damping device 1 described above, and performs processing by sandwiching a workpiece W between a punch 18 that is an upper die and a die 17 that is a lower die. Instead of the vibration damping device 1, the vibration damping device 1A of the second embodiment or the vibration damping device 1B of the third embodiment may be used.

  The frame 11 of the processing machine 10 includes a plurality of recesses 12. The concave portion 12 is formed so as to include a portion of the frame 11 that becomes an antinode of vibration, and the vibration damping device 1 is disposed. The recess 12 may be formed on any of the + X side surface, the −X side surface, the + Y side surface, the −Y side surface, the + Z side surface, and the −Z side surface of the frame 11. As shown in FIG. 7B, the recess 12 is formed in a shape that is recessed in a rectangular shape from the outer surface of the frame 11. The bottom surface of the recess 12 is formed in a shape (for example, a flat surface) on which the vibration damping device 1 can be installed. The depth of the recess 12 is set to be substantially the same as the height (thickness) of the vibration damping device 1. Thereby, it can avoid that the damping device 1 protrudes from the flame | frame 11 of the processing machine 10, and is mounted | worn. In addition, the magnitude | size of the recessed part 12 is arbitrary and is determined according to the magnitude | size of the damping device 1. FIG. A plurality of vibration control devices 1 may be arranged in one recess 12. For example, a plurality of vibration damping devices 1 may be disposed in the recess 12a as in the recess 12a shown in FIG. Further, whether or not the vibration damping device 1 is disposed in the recess 12 is arbitrary, and the vibration damping device 1 may be disposed on an installable surface (for example, a flat surface) other than the recess 12.

  The fixing plate 3 of the vibration damping device 1 is fixed to a frame 11 as a base material by a plurality of fastening members 7. Moreover, the number of the damping devices 1 installed with respect to the processing machine 10 is arbitrary. For example, in the frame 11, the vibration damping device 1 may be disposed corresponding to a plurality of vibration portions. By mounting the vibration damping device 1 on the processing machine 10, generation of vibration and sound generated in the frame 11 is suppressed.

  Next, the operation of the processing machine 10 will be described. By driving the driving unit 13 such as an electric motor, the punch 18 is lowered via the driving force transmitting unit 14. The workpiece W is placed on a holder 16 on a table 15 installed on the frame 11, and when the punch 18 is lowered, the workpiece W is sandwiched between the punch 18 and the die 17 to process the workpiece W. Do. Such a vibration is generated in the frame 11 when the workpiece W is processed. In this embodiment, since the vibration damping devices 1 are arranged at a plurality of locations of the frame 11, each vibration damping device 1 converts the vibration energy into thermal energy. By converting to, vibration of the frame 11 or generation of sound can be efficiently suppressed. Further, since the vibration damping device 1 is compact and inexpensive, the processing machine 10 is also compact and the manufacturing cost can be reduced.

  In the above description, the press machine is described as an example of the processing machine 10, but the processing machine 10 may be another industrial machine that processes the workpiece W. For example, the processing machine 10 may be a laser processing device, a tap processing device, a lathe, or the like.

  In the following, tests were performed on the vibration damping effect of the vibration damping device according to the example and the comparative example, but the present invention is not limited by these.

[Example 1]
The vibration damping device 1 shown in FIG. 1 (A) was fixed to a base material (thickness 22 mm) using four bolts (fastening members 7). A predetermined vibration was applied to the base material to which the damping device 1 was fixed using a vibrator. The transfer function and phase were measured by measuring the vibration of the base material. The transfer function and phase results are shown in FIGS. 8B and 8C, respectively. As a result, in the transfer function, the first resonance frequency peak (peak value, −164.1 [dB]) at 1424 Hz, the second resonance frequency peak (peak value, −160.9 [dB]) at 2827 Hz, and the first resonance frequency peak at 3146 Hz. Three resonance frequency peaks (peak value, −171.5 [dB]) were observed.

  Next, the loss coefficient at each of the first resonance frequency peak, the second resonance frequency peak, and the third resonance frequency peak of the obtained transfer function was calculated using these peak information. Further, the average value of the loss coefficients of the first resonance frequency peak, the second resonance frequency peak, and the third resonance frequency peak was calculated. The obtained loss factor results are shown in FIG. In FIG. 8A, the loss coefficient at the first resonance frequency peak is peak 1, the loss coefficient at the second resonance frequency peak is peak 2, and the loss coefficient at the third resonance frequency peak is peak 3.

[Comparative Example 1]
A predetermined vibration was applied to the base material in the same manner as in Example 1 without arranging the vibration damping device 1. The transfer function and phase were measured by measuring the vibration of the base material. The transfer function and phase results are shown in FIGS. 8B and 8C, respectively. As a result, in the transfer function, the first resonance frequency peak (peak value, −141.5 [dB]) at 1304 Hz, the second resonance frequency peak (peak value, −152.9 [dB]) at 2673 Hz, and the second resonance frequency peak at 2885 Hz. Three resonance frequency peaks (peak value, -164.9 [dB]) were observed.

  Next, a loss coefficient at each of the first resonance frequency peak, the second resonance frequency peak, and the third resonance frequency peak of the obtained transfer function was calculated using these peak information. Further, the average value of the loss coefficients of the first resonance frequency peak, the second resonance frequency peak, and the third resonance frequency peak was calculated. The obtained loss factor results are shown in FIG.

[Comparative Example 2]
All three plate-like members 2 in the vibration damping device 1 used in Example 1 were used instead of plate-like members having no slits. Subsequently, in the same manner as in Example 1, this device was fixed to the base material using four bolts, and predetermined vibration was applied to the base material. The transfer function and phase were measured by measuring the vibration of the base material. The transfer function and phase results are shown in FIGS. 8B and 8C, respectively. As a result, in the transfer function, the first resonance frequency peak (peak value, −157.9 [dB]) at 1519 Hz, the second resonance frequency peak (peak value, −164.3 [dB]) at 2813 Hz, and the first resonance frequency peak at 3147 Hz. Three resonance frequency peaks (peak value, -178.1 [dB]) were observed.

  Next, a loss coefficient at each of the first resonance frequency peak, the second resonance frequency peak, and the third resonance frequency peak of the obtained transfer function was calculated using these peak information. Further, the average value of the loss coefficients of the first resonance frequency peak, the second resonance frequency peak, and the third resonance frequency peak was calculated. The obtained loss factor results are shown in FIG.

  Subsequently, a result of comparison between Example 1 and Comparative Examples 1 and 2 will be described. In Example 1, it is confirmed that the loss coefficients at the first resonance frequency peak, the second resonance frequency peak, and the third resonance frequency peak are all higher than those of Comparative Example 1. In Example 1, the loss coefficient at the first resonance frequency peak is about twice as high as that of Comparative Example 2, and the loss coefficient at the second resonance frequency peak and the third resonance frequency peak is substantially equal to that of Comparative Example 2. It is confirmed. From this, it is confirmed that the vibration damping device 1 effectively suppresses vibration.

[Example 2]
The vibration damping device 1A shown in FIG. 3 (A) is fixed to the base material using five bolts (fastening members 7) in the same manner as in the first embodiment, and the vibration damping device 1A is fixed to the base material. A vibration was given. The transfer function and phase were measured by measuring the vibration of the base material. The transfer function and phase results are shown in FIGS. 9B and 9C, respectively. As a result, in the transfer function, the first resonance frequency peak (peak value, −157.4 [dB]) at 1417 Hz, the second resonance frequency peak (peak value, −185.9 [dB]) at 2373 Hz, and the first resonance frequency at 2910 Hz. Three resonance frequency peaks (peak value, -166.2 [dB]) were observed.

  Next, a loss coefficient at each of the first resonance frequency peak, the second resonance frequency peak, and the third resonance frequency peak of the obtained transfer function was calculated using these peak information. Further, the average value of the loss coefficients of the first resonance frequency peak, the second resonance frequency peak, and the third resonance frequency peak was calculated. The obtained loss factor results are shown in FIG. In FIG. 9A, the loss coefficient at the first resonance frequency peak is peak 1, the loss coefficient at the second resonance frequency peak is peak 2, and the loss coefficient at the third resonance frequency peak is peak 3. Note that Comparative Example 1 is the same as that described above, and similarly to FIG. 8, the loss coefficient is shown in FIG. 9A, and the transfer function and phase results are shown in FIG. 9B and FIG. Also shown in (C).

[Comparative Example 3]
All three plate-like members 2A in the vibration damping device 1A used in Example 2 were used in place of plate-like members having no slits. Subsequently, in the same manner as in Example 2, this device was fixed to the base material using five bolts, and predetermined vibration was applied to the base material. The transfer function and phase were measured by measuring the vibration of the base material. The transfer function and phase results are shown in FIGS. 9B and 9C, respectively. As a result, in the transfer function, the first resonance frequency peak (peak value, −151.5 [dB]) at 1440 Hz, the second resonance frequency peak (peak value, −180.1 [dB]) at 2420 Hz, and the second at 2920 Hz. Three resonance frequency peaks (peak value, −170.9 [dB]) were observed.

  Next, a loss coefficient at each of the first resonance frequency peak, the second resonance frequency peak, and the third resonance frequency peak of the obtained transfer function was calculated using these peak information. Further, the average value of the loss coefficients of the first resonance frequency peak, the second resonance frequency peak, and the third resonance frequency peak was calculated. The obtained loss factor results are shown in FIG.

  Subsequently, a result of comparison between Example 2 and Comparative Examples 1 and 3 will be described. In Example 2, it is confirmed that the loss coefficients at the first resonance frequency peak, the second resonance frequency peak, and the third resonance frequency peak are all higher than those of Comparative Example 1. In Example 2, the loss coefficients at the first resonance frequency peak and the second resonance frequency peak are about twice as high as those of Comparative Example 3, respectively, and the loss coefficient at the third resonance frequency peak is the same as that of Comparative Example 3. It is confirmed that they are almost the same. From this, it is confirmed that the vibration damping device 1A effectively suppresses vibration.

  Further, comparing the results of Example 1 and Example 2, the loss factor at the first resonance frequency peak is twice as high as Example 1 compared to Example 2, and the loss factor at the second resonance frequency peak is Example 2 is about 7 times higher than Example 1, and the loss coefficient at the third resonance frequency peak is almost the same between Example 1 and Example 2, and the first resonance frequency peak and the second resonance frequency peak are the same. The average loss coefficient at each of the third resonance frequency peaks is confirmed to be twice as high in Example 2 as compared to Example 1.

  As a result of comparing Example 1 and Example 2, Example 1 (damping device 1) vibrates efficiently at a frequency (for example, about 1300 to 1500 Hz) centered on peak 1 (first resonance frequency peak). In addition, it was confirmed that Example 2 (vibration control device 1A) efficiently suppresses vibration at a frequency (for example, about 2400 to 2800 Hz) centered on peak 2 (second resonance frequency peak). . Therefore, vibration can be more efficiently suppressed by appropriately installing Example 1 (damping device 1) and Example 2 (damping device 1A) according to the natural frequency of the base material. For example, in the processing machine 10 shown in FIG. 7A, the vibration of the frame 11 can be more efficiently suppressed by installing the vibration damping device 1 or the vibration damping device 1A according to the natural frequency in each recess 12. .

  As mentioned above, although embodiment of this invention was described, the technical scope of this invention is not limited to said embodiment or modification. For example, the requirements described in the above embodiments or modifications can be combined as appropriate.

1, 1A, 1B ... damping device 2, 2A, 2B, 2C, 2D ... plate member 2E, 2G ... first plate member 2F, 2H ... second plate member 3, 3A ... Fixing plate 4 ... Base material 5, 5A, 5B, 5C, 5D, 5E, 5F, 5G ... Slit 7 ... Fastening member 10 ... Processing machine 12, 12a ... Recess

Claims (10)

A plate-like member that is disposed in a stack of a plurality of base materials, and at least one of which is formed with a slit,
A vibration damping device comprising: a plurality of plate-like members sandwiched between the base material and a fixed plate fixed to the base material.   The vibration control device according to claim 1, wherein the fixing plate is thicker than the plate-like member. Three or more plate-like members are laminated,
The said slit is a damping device of Claim 1 or Claim 2 formed in each of the said plate-shaped member.   The vibration control device according to claim 3, wherein each of the plurality of plate-like members is formed with the slits that are substantially the same.   The said slit is a damping device of any one of Claims 1-4 formed in the cross shape which cross | intersects in the substantially center part of the said plate-shaped member.   The damping device according to any one of claims 1 to 5, wherein the fixing plate is fixed to the base material by a fastening member that penetrates the plate-like member.   7. The vibration damping device according to claim 6, wherein the fastening member is fixed to the base material at four locations close to the four corners of the fixing plate, or in addition to the four locations and at five locations of approximately one central portion. . A first plate-like member arranged in a plurality of layers on the base material;
A second plate-like member that is stacked on the base material and arranged side by side with the first plate-like member;
A vibration damping device comprising: a fixing plate that sandwiches both the first plate-like member and the second plate-like member with the base material and is fixed to the base material. A processing machine for processing a workpiece,
A processing machine provided with the damping device of any one of Claims 1-8.   The processing machine according to claim 9, wherein the vibration damping device is disposed in a recess formed in a part of the processing machine.

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