JP6539168B2 - Machine support structure - Google Patents

Description

  The present invention relates to a mechanical device support structure for supporting a mechanical device. In particular, the present invention relates to a mechanical device support structure characterized by a structure for supporting a mechanical device that generates a periodic excitation force.

In the industry, mechanical devices are used.
For example, a high-speed press is used to process an object to be processed.
The high speed press apparatus is installed on a foundation, and comprises a high speed press machine and a support mechanism.
The high speed press is comprised of a high speed press body and legs.
The high-speed press body has a drive unit and a processing unit.
The drive unit drives the processing unit by hydraulic drive or electric drive.
The processing unit is a portion for processing the object to be processed.
The legs are parts with a mounting surface for mounting the high-speed press body.

The mechanical device support structure is a structure that supports the mechanical device.
For example, the machine support structure is a mechanism that supports a high speed press.
In general, the machine support structure comprises a cradle 60, a support spring and a damping element.
Figures 13 and 14 show a machine support structure of conventional construction.
For example, the gantry 60 is a pedestal structure on which a high-speed press can be mounted, and has a mass necessary to suppress vibration.
For example, the legs of a high speed press are mounted on the top of the pedestal 60.
A support spring and a damping element are provided between the cradle 60 and the foundation 50.
For example, the support spring and the damping element are realized by vertically stacked free springs.

The natural frequency of the high-speed press supported by the machine support structure is determined by the total mass of the mass of the high-speed press and the mass of the frame and the spring constant of the support spring.
When the drive unit drives the processing unit, the high-speed press device is vibrated by the vibration frequency and the vibration force of the drive unit.
By properly selecting the mount, the support spring and the damping element, the vertical response displacement of the high-speed press in the vertical direction can be reduced.
Generally, when the mass of the mount increases, the vertical response displacement of the high-speed press in the vertical direction can be reduced.

However, as the mass of the cradle increases, the design of the mechanical device support structure tends to be difficult.
In particular, when the mass of the mount increases, the static deflection of the support spring increases, making it difficult to select the support spring.

  The present invention has been made in view of the problems described above, and an object thereof is to provide a mechanical device support structure capable of supporting a mechanical device with a simple structure and exhibiting desired vibration proofing performance.

  In order to achieve the above object, according to the present invention, there is provided a mechanical device body having a drive provided on a foundation and generating a periodic excitation force and a leg having a mounting surface for mounting the mechanical device. A mechanical device supporting structure for supporting the frame, between the leg and the base, and converting the relative displacement in the vertical direction between the base and the leg into the amount of rotation of the rotating body, the base and the leg And a support spring for generating an elastic reaction force acting along the vertical direction corresponding to the relative displacement in the vertical direction between them.

According to the configuration of the present invention, the mechanical device has a mechanical device main body having a drive portion generating cyclical excitation force, a processing portion, and a leg portion having a mounting surface for mounting the mechanical device main body. An inertial mass, which is provided between the leg and the base, converts the relative vertical displacement between the base and the leg into the amount of rotation of the rotating body. A support spring generates an elastic reaction force acting along the vertical direction in response to the vertical relative displacement between the base and the leg.
As a result, by appropriately selecting the physical specifications of the rotating body and the support spring, it is possible to suppress the vibration of the vibration system formed by the mechanical device, the inertia mass and the support spring.

  Hereinafter, a mechanical device support structure according to an embodiment of the present invention will be described. The present invention includes any of the embodiments described below, or a combination of two or more of them.

In the mechanical device support structure according to an embodiment of the present invention, the upper portion of the inertia mass is directly connected to the leg portion.
According to the configuration of the embodiment of the present invention, the upper portion of the inertial mass is directly connected to the leg.
As a result, when the inertial mass converts the relative displacement in the vertical direction into the amount of rotation of the rotating body, the vertical reaction force generated due to the rotational inertia force of the rotating body is directly transmitted to the mechanical device.

In addition, the mechanical device support structure according to the embodiment of the present invention corresponds to the reaction force in the vertical direction generated due to the rotational inertia force of the rotating body by the mass of the mechanical device and the inertial mass when represented by a mass point system. The apparent mass in the vertical direction is directly connected in series.
According to the configuration of the embodiment of the present invention, when represented by a mass point system, the vertical direction corresponding to the reaction force in the vertical direction generated due to the rotational inertia force of the rotating body by the mass of the mechanical device and the inertial mass The apparent mass is directly connected in series.
As a result, the mass of the mechanical device and the apparent mass in the vertical direction corresponding to the reaction force in the vertical direction generated due to the rotational inertia force of the rotating body by the inertial mass integrally move relatively in the vertical direction.

Further, in the mechanical device support structure according to the embodiment of the present invention, when represented by a mass point system, a vertical direction corresponding to a reaction force in the vertical direction caused by the inertial force of the rotating body by the inertial mass The apparent mass and the spring constant of the support spring indicate that the natural frequency of the mass point system is sufficiently smaller than the vibration frequency of the drive unit, and the vertical response displacement of the machine body in the vertical direction is a predetermined vertical displacement. It is selected to be smaller than the value.
According to the configuration of the above embodiment, the apparent mass in the vertical direction and the support spring corresponding to the reaction force in the vertical direction generated due to the rotational inertia force of the rotating body by the inertia mass when represented by a mass point system The spring constant is selected so that the natural frequency of the mass system is sufficiently smaller than the vibration frequency of the drive unit, and the vertical response displacement in the vertical direction of the mechanical device body is smaller than a predetermined vertical displacement value. It is done.
As a result, vibration in the vertical direction of the mechanical device body can be suppressed without unreasonableness.

In the mechanical device support structure according to the embodiment of the present invention, the support spring is guided by the inertia mass and extends and contracts along the vertical direction in response to the relative displacement between the base and the leg in the vertical direction. .
According to the configuration of the above-described embodiment, the support spring is guided by the inertia mass and extends and contracts in the vertical direction in response to the relative displacement between the base and the leg in the vertical direction.
As a result, the reaction force in the vertical direction generated by the inertial mass and the elastic reaction force generated by the support spring act coaxially, and an unnecessary couple of forces hardly occurs in the mechanical device.

A mechanical device support structure according to an embodiment of the present invention includes a leg portion side connecting member that connects a leg portion and the inertial mass, and a base side connecting member that connects the inertial mass and a base, An elongated member provided with a spiral groove, which is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface, a rotating member that rotates according to rotation of the long axis member, and the spiral groove And the leg portion side connecting member restrains the relative displacement between the leg portion and one of the nut member and the elongated member in the vertical direction and the relative rotation around the vertical axis. The leg portion and one of the nut member and the long member are connected, and the base side connection member restricts the relative displacement between the other of the nut member and the long member and the base in the vertical direction, The nut member and the elongated member to freely rotate around Connecting the other and Foundation wood.
According to the configuration of the above embodiment, the inertial mass is provided with a helical groove which is a helical groove having a predetermined lead along the longitudinal direction in the outer peripheral surface, and the rotational member corresponding to the rotation of the long shaft member And a nut member guided along the spiral groove. The leg portion, the nut member, and the elongated member so that the leg portion side connecting member restrains the relative displacement between the leg portion and one of the nut member and the elongated member in the vertical direction and the relative rotation around the vertical axis. Connect with one of the The other of the nut member and the elongated member is arranged so that the base side connecting member restrains the relative displacement between the other of the nut member and the other of the elongated member and the base in the vertical direction and allows rotation around the vertical axis. Connect with the foundation.
As a result, when relative displacement between the leg and the base in the vertical direction occurs, the other of the nut member and the elongated member is rotated.

In the mechanical device support structure according to the embodiment of the present invention, the leg-side connecting member moves the relative movement in the horizontal direction between the leg and one of the nut member and the elongated member within a predetermined stroke range. The leg portion is connected to one of the nut member and the elongated member so as to be freely movable.
By the configuration of the above embodiment,
The leg portion, the nut member, and the long member so that the leg portion side connecting member can freely move the relative movement in the horizontal direction between the leg portion and one of the nut member and the long member within a predetermined stroke range. Connect with one of the members.
As a result, even if relative displacement in the horizontal direction occurs in the mechanical device, horizontal force does not occur in one of the nut member and the long member within the range of a predetermined stroke.

A mechanical device support structure according to an embodiment of the present invention includes a leg portion side connecting member that connects a leg portion and the inertial mass, and a base side connecting member that connects the inertial mass and a base, An elongated member provided with a spiral groove, which is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface, a nut member guided along the spiral groove, and a rotation of the nut member The leg-side connecting member restrains the relative displacement between the leg and one of the elongated member and the nut member in the vertical direction, and the relative rotation around the vertical axis is free. To connect the leg with one of the elongated member and the nut member, and the base side connection member restricts the relative displacement between the other of the elongated member and the nut member and the base in the vertical direction The elongated member and the front to restrain rotation about an axis Connecting the other and the base of the nut member.
According to the configuration of the above embodiment, an elongated member provided with a spiral groove which is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface and a nut member guided along the spiral groove And a rotating member that rotates in response to the rotation of the nut member. The leg portion and the elongated member are configured such that the leg portion side connecting member restrains the relative displacement between the leg portion and one of the elongated member and the nut member in the vertical direction and allows relative rotation about the vertical axis. The one end of the nut member is connected. The base side connecting member restrains the relative displacement between the other of the long member and the other of the nut member and the base in the vertical direction, and restricts the rotation around the vertical axis with the other of the long member and the nut member and the base Concatenate with
As a result, when relative displacement between the leg and the base in the vertical direction occurs, one of the elongated member and the nut member is rotated.

In the mechanical device support structure according to the embodiment of the present invention, the base-side connection member allows relative horizontal displacement between the other of the long member and the nut member and the base within a predetermined stroke range. In the same manner, the other one of the long member and the nut member is connected to the base.
According to the configuration of the above embodiment, the elongated member and the elongated member and the elongated member and the elongated member can be configured such that the horizontal relative displacement between the other of the elongated member and the other of the nut member and the foundation can be made within the predetermined stroke range. Connect with the other side of the nut member and the base.
As a result, even if relative displacement in the horizontal direction occurs in the mechanical device, horizontal force does not occur in one of the nut member and the long member within the range of a predetermined stroke.

In the mechanical device support structure according to the embodiment of the present invention, the inertia mass includes the elongated member, the nut member, and the nut member, and has a lubricating oil cover for storing lubricating oil inside.
According to the configuration of the above embodiment, the inertia mass includes the elongated member, the nut member, and the nut member, and has a lubricating oil cover for storing the lubricating oil inside.
As a result, the nut member is stably guided following the spiral groove of the long member.

In the mechanical device support structure according to the embodiment of the present invention, the inertia mass includes the elongated member and the nut member having a cylindrical outer surface, and the support spring is the outer surface of the nut member. It is guided in an expandable manner in the vertical direction.
According to the configuration of the above embodiment, the inertial mass includes the elongated member and the nut member having a cylindrical outer surface. The support spring is vertically and telescopically guided by the outer side surface of the nut member.
As a result, the reaction force in the vertical direction generated by the inertial mass and the elastic reaction force generated by the support spring act coaxially, and an unnecessary couple of forces hardly occurs in the mechanical device.

As described above, the mechanical device support structure according to the present invention has the following effects due to its configuration.
An inertial mass and a support spring are provided between a foot and a base having a mounting surface for mounting a mechanical device main body having a drive portion generating a periodic excitation force and a processing portion, and the inertial mass is vertical Since the relative displacement in the direction is converted to the amount of rotation of the rotating body, and the support spring generates an elastic reaction force adopted in the vertical direction corresponding to the relative displacement in the vertical direction, the physics of the rotating body and the support spring By appropriately selecting the specifications, it is possible to suppress the vibration of the vibration system made up of the mechanical device, the inertia mass and the support spring.
Further, since the upper portion of the inertial mass is directly connected to the leg portion, the inertial mass converts the relative displacement in the vertical direction into the amount of rotation of the rotating body, resulting in the rotational inertia force of the rotating body. The vertical reaction force generated is directly transmitted to the machine.
Also, when represented by a mass point system, the mass of the machine and the apparent mass in the vertical direction corresponding to the reaction force in the vertical direction caused by the rotational inertia force of the rotating body by the inertia mass are directly connected in series. Therefore, the mass of the mechanical device and the apparent mass in the vertical direction corresponding to the reaction force in the vertical direction caused by the rotational inertia force of the rotating body by the inertia mass are integrated as a vertical direction. Move relative to
In addition, the apparent mass in the vertical direction corresponding to the reaction force in the vertical direction caused by the inertia force of rotation of the rotating body by the inertia mass when expressed by a mass point system and the spring constant of the support spring are selected. The natural frequency of the mass system is sufficiently smaller than the vibration frequency of the drive unit, and the vertical response displacement in the vertical direction of the mechanical device body is smaller than a predetermined vertical displacement value. Vibration in the vertical direction of the mechanical device body can be suppressed.
In addition, since the support spring is guided by the inertia mass so as to expand and contract along the vertical direction corresponding to the relative displacement between the foundation and the leg in the vertical direction, the vertical direction generated by the inertia mass And the elastic reaction force generated by the support spring act on the same axis, which makes it difficult to generate unnecessary couples in the mechanical device.
Also, using the above-mentioned inertia mass constituted by an elongated member provided with the spiral groove, a rotating member that rotates corresponding to the elongated member, and a nut member guided along the spiral groove, the leg side The connection member restricts relative displacement between the leg portion and one of the nut member and the elongated member in the vertical direction and relative rotation around the vertical axis, and the base side connection member includes the nut member and the elongated member. Since the relative displacement between the other of the member and the base in the vertical direction is restricted to allow rotation around the vertical axis, when the relative movement between the leg and the base in the vertical direction occurs, the nut member and the base are separated. The other of the long members rotates.
Further, since the leg-side connecting member allows relative movement in the horizontal direction between the leg and one of the nut member and the long member within a predetermined stroke range, the horizontal direction of the mechanical device can be obtained. Even if relative displacement occurs, horizontal force does not occur in one of the nut member and the elongated member within a predetermined stroke range.
Also, using the above-mentioned inertia mass constituted by an elongated member provided with the spiral groove, a rotating member that rotates corresponding to the elongated member, and a nut member guided along the spiral groove, the leg side The connection member restricts relative displacement between the leg portion and one of the elongated member and the nut member in the vertical direction to allow relative rotation about the vertical axis, and the base side connection member includes the elongated member and the elongated member Since the relative displacement between the other of the nut member and the base in the vertical direction is restrained to restrict rotation around the vertical axis, when the relative displacement between the leg and the base in the vertical direction occurs, the long member And one of the nut members is rotated.
Further, since the base side connecting member allows relative relative displacement between the other of the long member and the other of the nut member and the base in the horizontal direction within a predetermined stroke range, it is possible Even if relative displacement occurs, horizontal force does not occur in one of the nut member and the elongated member within a predetermined stroke range.
In addition, since the lubricating oil cover is configured to store the lubricating oil in the interior of the nut member, the nut member is stably guided following the spiral groove of the long member.
Further, since the support spring is guided in a vertically expandable manner by the outer side surface of the nut member guided to the elongated member of the inertia mass, the vertical direction in which the inertia mass is generated is reversed. The force and the elastic reaction force generated by the support spring act on the same axis, and it is difficult to generate an unnecessary couple in the mechanical device.

It is a conceptual diagram of the mechanical equipment concerning the embodiment of the present invention. It is a front view of the machine apparatus and machine apparatus support structure which concern on embodiment of this invention. It is a top view of the machinery and machinery support structure concerning an embodiment of the present invention. It is a conceptual diagram of various types of inertial mass concerning an embodiment of the present invention. It is a front view of an inertial mass concerning a first embodiment of the present invention. It is a front view of the support spring concerning a first embodiment of the present invention. It is a front view of an inertial mass concerning a second embodiment of the present invention. It is a front view of an inertial mass concerning a third embodiment of the present invention. It is a front view of the inertial mass which concerns on 4th embodiment of this invention. It is a front view of the inertial mass which concerns on 5th embodiment of this invention. It is a study model of the machinery support structure concerning the embodiment of the present invention. 1 is a schematic size of an inertial mass according to an embodiment of the present invention. It is a front view of the conventional mechanical device and mechanical device support structure. It is a top view of the conventional machinery and machinery support structure.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

First, a mechanical device support structure according to an embodiment of the present invention will be described based on the drawings. FIG. 1 is a conceptual view of a mechanical device according to an embodiment of the present invention. It is a front view of the machinery support structure concerning the embodiment of the present invention. It is a top view of the machinery support structure concerning the embodiment of the present invention. It is a conceptual diagram of various types of inertial mass concerning an embodiment of the present invention.

The machine support structure is provided on the foundation 50 to support the machine.
The mechanical device comprises the mechanical device body 110 and the legs 120.
The mechanical device main body 110 is configured of a drive unit 111.
The mechanical device body 110 may be configured by the drive unit 111 and the processing unit 112.
The mechanical device main body 110 may be configured by the drive unit 111, the processing unit 112, the material input port 113, and the control panel 114.
The drive unit 111 is a part that generates a periodic excitation force.
For example, the drive unit 111 generates an excitation force in which a periodic vertical acceleration component is dominant.
The processing unit 112 is a portion for processing a material.
The material input port 113 is a part into which the material to be processed is input.
The control panel 114 is a panel that controls the mechanical device body 110.
The leg 120 is a portion having a mounting surface S for mounting the mechanical device body.
The legs 120 are fixed to the lower portion of the mechanical device body 110.
For example, the pair of legs 120 is fixed to the lower portion of the mechanical device body 110.

Hereinafter, a mechanical device support structure according to an embodiment of the present invention will be described.
The machine support structure is provided on the foundation 50.
A mechanical device support structure is provided between the legs 120 and the foundation 50.
The mechanical device support structure is composed of an inertial mass 200 and a support spring 300.
The mechanical device support structure includes the inertia mass 200, the support spring 300, the leg side connection member 410, and the base side connection member 420.
The mechanical device support structure may be configured by the inertia mass 200, the support spring 300, the leg side connection member 410, the base side connection member 420, the leg side spring connection member 510, and the base side spring connection member 520.
The leg portion side connecting member 410 may double as the leg portion side spring connecting member 510.
The base side connecting member 420 may double as the base side spring connecting member 520.
The inertial mass 200 and the support spring 300 may be installed separately and side by side.
The inertial mass 200 and the support spring 300 may be integrated.

The inertial mass 200 is a mechanical element that converts the relative relative displacement between the base 50 and the leg 120 in the vertical direction into the amount of rotation of the rotating body.
The support spring 300 is a mechanical element that generates an elastic reaction force acting along the vertical direction corresponding to the relative displacement between the base and the leg in the vertical direction.

Inertial mass 200 may be directly coupled to leg 120.
The top of the inertial mass 200 may be directly connected to the legs 120.
For example, the upper portion of the inertial mass 200 is directly connected to the leg 120 by the leg-side connecting member 410.
The lower portion of the inertial mass 200 may be directly connected to the foundation 50.
For example, the lower portion of the inertial mass 200 is directly connected to the foundation 50 by the foundation-side connecting member 420.

The support spring 300 may be directly connected to the leg 120.
The top of the support spring 300 may be directly connected to the leg 120.
For example, the upper portion of the support spring 300 is directly connected to the leg 120 by the leg side spring connection member 510.
The lower portion of the support spring 300 may be directly connected to the base 50.
For example, the lower portion of the support spring 300 is directly connected to the base 40 by the base-side spring connection member 520.

The inertial mass 200 is an element that converts relative displacement in the vertical direction into the amount of rotation of the rotating body.
When relative displacement in the vertical direction occurs in the inertial mass, the inertial mass generates an inertial force. The inertial force in the vertical direction is proportional to the acceleration of the relative displacement in the vertical direction. As a result, the inertial mass 200 has an apparent mass md.

The support spring 300 is an element that generates an elastic reaction force acting along the vertical direction corresponding to the relative displacement in the horizontal direction. As a result, the support spring has a spring constant k.
The elastic reaction force is proportional to the relative displacement in the vertical direction.

  The support spring 300 may be guided by the inertial mass 200 to extend and contract along the vertical direction in response to the relative relative displacement between the base 50 and the leg 120 in the vertical direction.

The damping element is an element that generates a damping force acting along the horizontal direction corresponding to the relative velocity in the horizontal direction. The damping element has a viscosity coefficient C.
The damping force is proportional to the speed of relative displacement in the vertical direction.

When a system composed of the mechanical device 100 and the mechanical device support structure is expressed as a mass point model, the inertial mass 200, the support spring 300 and the damping element C are provided between the mechanical device having the mass m and the foundation 50. Be
When a system composed of the mechanical device 100 and the mechanical device support structure is expressed as a mass point model, the inertial mass 200, the support spring 300 and the damping element C are provided between the mechanical device having the mass m and the foundation 50. And connected to the machine and the foundation 50.

When expressed in a mass point system, the mass m of the mechanical device and the apparent mass md in the vertical direction corresponding to the reaction force in the vertical direction generated due to the rotational inertia force of the rotating body by the inertia mass 200 are connected in series.
When expressed in a mass point system, the mass m of the machine and the apparent mass md in the vertical direction corresponding to the reaction force in the vertical direction generated by the rotational inertia force of the rotating body by the inertia mass 200 are directly connected in series Ru.
Appearance of the vertical direction corresponding to the reaction force in the vertical direction generated to correspond to the relative acceleration in the vertical direction due to the rotational inertia force of the rotating body by the mass m of the mechanical device and the inertia mass 200 when represented by a mass point system The mass md of is directly connected in series.

  Apparent mass and support in the vertical direction corresponding to the reaction force in the vertical direction generated by the inertial mass 200 in proportion to the relative acceleration in the vertical direction due to the rotational inertia force of the rotating body when represented by a mass point system With the spring constant k of the spring 300, the natural frequency of the mass point system is sufficiently smaller than the excitation frequency of the drive unit 111, and the vertical response displacement of the mechanical device body 110 in the vertical direction becomes smaller than a predetermined vertical displacement value. Are selected.

The inertial mass 200 may be configured by the elongated member 210, the rotating member 220, and the nut member 230.
The long member 210 is a member provided with a spiral groove which is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface.
The nut member 230 is a member to be guided following the spiral groove.
The nut member 230 may hold a plurality of ball balls rolling along the spiral groove.
When the elongated member 210 and the nut member 230 are relatively displaced in the vertical direction, a plurality of ball balls circulate inside the nut member 230.
The rotating member 220 may be a member that rotates in response to the rotation of the elongated member 210.
The rotating member 220 may be a member that rotates in response to the rotation of the nut member 230.

The inertial mass 200 may be configured by the elongated member 210, the nut member 230, and the lubricating oil cover 240.
The lubricating oil cover 240 is a member that encloses the nut member 230 and stores the lubricating oil inside.

The support spring 300 may be guided by the outer surface of the nut member 230 so as to be extensible and contractible in the vertical direction.
The support spring 300 may be guided by the outer side surface of the lubricating oil cover 240 so as to be extensible and contractible in the vertical direction.

Hereinafter, the configuration of the above-described inertial mass will be described based on the drawings.
FIG. 4 illustrates various types of inertial mass used in a mechanical device support structure according to an embodiment of the present invention.
In the figure, what is represented by the symbol "○-○" is a free mechanism. It is a rotary bearing that is represented by the symbol "O | | O".

Type A
The rotating member 220 is a member that rotates in response to the rotation of the elongated member 210.
For example, the rotation member 220 is fixed to the long member 210 and rotates integrally. The leg-side connecting member 410 is a relative displacement between the leg 120 and the nut member 230 in the vertical direction and the horizontal direction and a relative movement around the vertical axis. The leg 120 and the nut member 230 are connected in such a way as to restrict rotation.
The base-side connecting member 420 connects the long member 210 and the base 50 so that relative displacement between the long member 210 and the base 50 in the vertical and horizontal directions is restricted and rotation around the vertical axis is possible. Do.
When the mechanical device vibrates up and down, the elongated member 210 and the rotating member 220 rotate corresponding to the relative displacement between the leg 120 and the base in the vertical direction, and the leg side connecting member 410 due to the rotational inertia force. Produces a vertical reaction force.

Type B
The rotating member 220 is a member that rotates in response to the rotation of the elongated member 210.
For example, the rotation member 220 is fixed to the long member 210 and rotates integrally.
The leg portion side connecting member 410 restricts relative displacement between the leg portion 120 and the elongated member 210 in the vertical direction and the horizontal direction, and allows the leg portion 120 and the elongated member 210 to rotate around the vertical axis. Connect
The base-side connecting member 420 connects the nut member 230 and the base 50 so as to restrain relative movement between the nut member 230 and the base 50 in the vertical and horizontal directions and rotation around the vertical axis.
When the mechanical device vibrates up and down, the elongated member 210 and the rotating member 220 rotate corresponding to the relative displacement between the leg 120 and the base in the vertical direction, and the leg side connecting member 410 due to the rotational inertia force. Produces a vertical reaction force.

Type C
The rotating member 220 rotates in response to the rotation of the nut member 230.
For example, the rotation member 220 is fixed to the nut member 230 and rotates integrally.
The leg portion side connecting member 410 connects the leg portion 120 and the long member 210 so as to restrain relative displacement between the leg portion 120 and the long member 210 in the vertical and horizontal directions and rotation around the vertical axis. Do.
The base-side connecting member 420 connects the nut member 230 and the base 50 so as to restrict relative movement between the nut member 230 and the base 50 in the vertical and horizontal directions and allow rotation around the vertical axis.
When the mechanical device vibrates up and down, the nut member 230 and the rotating member 220 rotate in response to the relative displacement between the leg 120 and the base in the vertical direction, and the leg side connecting member 410 is generated due to the rotational inertia force. A vertical reaction force is generated.

Type D
The rotating member 220 rotates in response to the rotation of the nut member 230.
For example, the rotation member 220 is fixed to the nut member 230 and rotates integrally.
The leg portion side connecting member 410 connects the leg portion 120 and the nut member 230 so as to restrict relative movement between the leg portion 120 and the nut member 230 in the vertical direction and the horizontal direction and to freely rotate around the vertical axis. Do.
The base-side connecting member 420 connects the long member 210 and the base 50 so as to restrict relative movement between the long member 210 and the base 50 in the vertical and horizontal directions and rotation around the vertical axis.
When the mechanical device vibrates up and down, the nut member 230 and the rotating member 220 rotate in response to the relative displacement between the leg 120 and the base in the vertical direction, and the leg side connecting member 410 is generated due to the rotational inertia force. A vertical reaction force is generated.

Type E
The structure of type E is the same as that of type A except for the structure of the leg side connecting member 410.
The leg-side connecting member 410 restricts relative displacement between the leg 120 and the nut member 230 in the vertical direction, thereby enabling relative relative movement in the horizontal direction within a predetermined stroke range and restricting rotation around the vertical axis. In the same manner, the leg 120 and the nut member 230 are connected.

Type F
The structure of type F is the same as that of type B except for the structure of the base side connection member 420.
The base-side connecting member 420 restricts the relative movement between the nut member 230 and the base 50 in the vertical direction, allows relative movement in the horizontal direction within a predetermined stroke range, and restricts rotation around the vertical axis. The nut member 230 and the base 50 are connected.

Type G
The structure of type G is the same as that of type C except for the structure of the leg side connecting member 410.
The leg-side connecting member 410 restrains relative movement in the vertical direction between the leg 120 and the long member 210, frees relative movement in the horizontal direction within a predetermined stroke range, and restricts rotation around the vertical axis. In the same manner, the leg 120 and the long member 210 are connected.

Type H
The structure of type H is the same as that of type D except for the structure of the base-side connecting member 420.
The base-side connecting member 410 restricts relative movement between the elongated member 210 and the base 50 in the vertical direction, thereby freeing relative movement in the horizontal direction within a predetermined stroke range and restricting rotation around the vertical axis. The long member 210 and the base 50 are connected.

Type I
The structure of type I is the same as the structure of type A except for the structure of the base side connection member 420.
The base-side connecting member 420 restricts the relative movement in the vertical direction between the long member 210 and the base 50, thereby freeing the relative movement in the horizontal direction within a predetermined stroke range and freeing the rotation around the vertical axis. , The long member 210 and the base 50 are connected.

Type J
The structure of type J is the same as that of type B except for the structure of the leg-side connecting member 410.
The leg side connecting member 410 restricts relative movement in the vertical direction between the leg 120 and the long member 210, thereby freeing relative movement in the horizontal direction within a predetermined stroke range and freely rotating around the vertical axis. The leg portion 120 and the elongated member 210 are connected as shown in FIG.

Type K
The structure of type K is the same as that of type C except for the structure of the base-side connecting member 420.
The base side connecting member 420 restricts the relative movement between the nut member 230 and the base 50 in the vertical direction, thereby freeing the relative movement in the horizontal direction within a predetermined stroke range and freeing the rotation around the vertical axis. , And the nut member 230 and the base 50 are connected.

Type L
The structure of the type L is the same as the structure of the type D except for the structure of the leg side connecting member 410.
The leg-side connecting member 410 restrains relative movement in the vertical direction between the leg 120 and the nut member 230, thereby freeing relative movement in the horizontal direction within a predetermined stroke range and freely rotating about the vertical axis. In the same manner, the leg 120 and the nut member 230 are connected.

Next, an example of the mechanical device support structure according to the first embodiment of the present invention will be described in detail based on the drawings.
FIG. 5 is a front view of the inertial mass according to the first embodiment of the present invention.
FIG. 6 is a front view of a support spring according to the first embodiment of the present invention.
The inertial mass used in the mechanical device support structure according to the first embodiment corresponds to type A.
The mechanical device support structure includes the inertia mass 200, the support spring 300, the leg side connection member 410, the base side connection member 420, the leg side spring connection member 510, and the base side spring connection member 520.
FIG. 3 illustrates how four inertial masses 200 and four support springs 300 are disposed at the corners of the legs 120, as viewed from the top.

The inertial mass 200 is constituted by the elongated member 210, the rotating member 220 and the nut member 230.
The long member 210 is a member provided with a spiral groove which is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface.
The long member 210 has the longitudinal direction along the vertical axis.
The rotating member 220 is a member that rotates in response to the rotation of the elongated member 210.
The rotation member 220 is fixed to the lower part of the long member 210 and is integrated.
The nut member 230 is a member to be guided following the spiral groove.
The nut member 230 has a plurality of ball balls rolling along the spiral groove.
When the nut member 230 and the long member 210 move relative to each other in the vertical direction, a plurality of ball balls circulate in the nut member 230.

  The leg portion side connecting member 410 is fixed to the leg portion 120, and restricts the relative movement of the nut member 230 in the vertical direction and the horizontal direction, and fixes the nut member 230 so as to restrict rotation around the vertical axis.

  The base side connection member 420 is fixed to the base 50, and restricts the relative movement of the long member 210 in the vertical direction and the horizontal direction, and fixes the long member 210 so as to freely rotate around the vertical axis.

The support spring 300 is composed of a plurality of spring 310 and a guide rod 320.
The plurality of overlapping flat springs 310 expand and contract in the vertical direction to generate an elastic reaction force in the vertical direction.
The plurality of overlapping flat springs 310 expand and contract in the vertical direction to generate damping force in the vertical direction due to the friction of the flat springs.
A guide rod guides a plurality of flat springs in an expandable manner in the vertical direction.
The leg-side spring connection member 510 is fixed to the leg 120 and restrains the relative movement of the guide bar in the vertical direction and the horizontal direction, and restricts the rotation around the vertical axis.
The base-side spring connection member 520 is fixed to the base 50, and allows the guide rods to move relative to each other in the vertical direction and restricts relative movement in the horizontal direction.

The operation of the mechanical device support structure according to the first embodiment will be described below.
When an exciting force is generated in the mechanical device, the mechanical device vibrates and a relative displacement occurs between the leg 120 and the foundation 50.
The relative displacement in the vertical direction between the leg portion 120 and the foundation 50 causes the inertial mass 200 to generate a vertical reaction force due to the rotational inertia efficiency by the rotation around the vertical axis of the elongated member 210 and the rotating member 220 Do. The generated vertical reaction force is proportional to the acceleration of the relative displacement in the vertical direction.
Here, the reaction force is a force acting in the direction opposite to the direction of the acceleration.
Due to the relative vertical displacement between the leg 120 and the base 50, the support spring 300 generates an elastic force and a damping force by the expansion and contraction of the plurality of overlapped flat springs. The elastic force is proportional to the relative displacement in the vertical direction. The damping force is proportional to the vertical velocity.
Since the guide rods 320 are guided in the holes provided in the base side spring connection member 520, the horizontal relative displacement between the legs 120 and the base 50 is suppressed.

Next, a mechanical device support structure according to a second embodiment of the present invention will be described based on the drawings.
FIG. 7 is a front view of an inertial mass used in a mechanical device support structure according to a second embodiment of the present invention.
The inertial mass used in such a mechanical device support structure of the second embodiment corresponds to type E.
The mechanical device support structure includes the inertia mass 200, the support spring 300, the leg side connection member 410, the base side connection member 420, the leg side spring connection member 510, and the base side spring connection member 520.
FIG. 3 illustrates how four inertial masses 200 and four support springs 300 are disposed at the corners of the legs 120, as viewed from the top.

  The structures of the inertial mass 200, the support spring 300, the base side connection member 420, the leg side spring connection member 510, and the base side spring connection member 520 are the same as those used for the mechanical device support structure according to the first embodiment. I omit explanation.

The leg portion side connecting member 410 is fixed to the leg portion 120, restricts the relative movement of the nut member 230 in the vertical direction, frees the relative movement in the horizontal direction within a predetermined stroke range, and restricts the rotation about the vertical axis The nut member 230 is fixed so that
For example, the leg-side connecting member 410 is configured of the leg-side connecting member main body 411 and the free mechanism 412.
For example, the flexible mechanism 412 is a link which is swingably fixed to the leg 120 at one end by a spherical bush and the other end is rockably fixed to the leg-side connecting member main body 411 by a spherical bush.

  The operation of the mechanical device support structure according to the second embodiment is substantially the same as that according to the first embodiment, so the description will be omitted.

Next, a mechanical device support mechanism according to a third embodiment of the present invention will be described based on the drawings.
FIG. 8 is a front view of an inertial mass according to a third embodiment of the present invention.
The inertia mass used in the machine support mechanism according to the third embodiment is one in which the equivalent to type A and the support spring are integrated.
The mechanical device support structure includes the inertia mass 200, the support spring 300, the leg side connection member 410, and the base side connection member 420.
The leg side connecting member 410 doubles as the leg side spring connecting member 510 The base side connecting member 420 doubles as the base side spring connecting member 520.

  The structures of the inertial mass 200, the leg-side connecting member 410, and the base-side connecting member 420 are the same as those according to the first embodiment, so the description will be omitted.

The support spring 300 is comprised of a plurality of flat springs.
A plurality of overlapped flat springs 310 are guided by a cylindrical outer surface of the nut member 230 so as to be extensible and contractible in the vertical direction.

  The operation of the mechanical device support structure according to the second embodiment is substantially the same as that according to the first embodiment, so the description will be omitted.

Next, a mechanical device support structure according to a fourth embodiment of the present invention will be described based on the drawings.
FIG. 9 is a front view of an inertial mass according to a fourth embodiment of the present invention.
The inertial mass used in the mechanical device support structure according to the fourth embodiment corresponds to type B.
The mechanical device support structure includes the inertia mass 200, the support spring 300, the leg side connection member 410, the base side connection member 420, the leg side spring connection member 510, and the base side spring connection member 520.
FIG. 3 illustrates how four inertial masses 200 and four support springs 300 are disposed at the corners of the legs 120, as viewed from the top.

  The configurations of the support spring 300, the leg side spring connection member 510, and the base side spring connection member 520 are the same as those according to the first embodiment, and thus the description thereof is omitted.

The inertial mass 200 is configured of an elongated member 210, a rotating member 220, a nut member 230 and a lubricating oil cover 240.
The long member 210 is a member provided with a spiral groove which is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface.
The long member 210 has the longitudinal direction along the vertical axis.
The rotating member 220 is a member that rotates in response to the rotation of the elongated member 210.
The rotation member 220 is fixed to the lower part of the long member 210 and is integrated.
The nut member 230 is a member to be guided following the spiral groove.
The nut member 230 has a ball that rolls along the spiral groove.
When the nut member 230 and the long member 210 move relative to each other in the vertical direction, a plurality of ball balls circulate in the nut member 230.
The lubricating oil cover 240 is a member that encloses the nut member 230 and stores the lubricating oil inside.

  The leg portion side connection member 410 is fixed to the leg portion 120, and restricts the relative movement of the long member 210 in the vertical direction and the horizontal direction, and fixes the long member 210 so as to freely rotate around the vertical axis. .

  The base-side connecting member 420 is fixed to the base 50 and fixes the elongated member 210 so as to restrict relative movement in the vertical direction and horizontal direction of the nut member 230 and restrict rotation around the vertical axis.

The operation of the mechanical device support structure according to the fourth embodiment will be described below.
When an exciting force is generated in the mechanical device, the mechanical device vibrates and a relative displacement occurs between the leg 120 and the foundation 50.
The relative displacement in the vertical direction between the leg portion 120 and the foundation 50 causes the inertial mass 200 to generate a vertical reaction force due to the rotational inertia efficiency by the rotation around the vertical axis of the elongated member 210 and the rotating member 220 Do. The generated vertical reaction force is proportional to the acceleration of the relative displacement in the vertical direction.
Here, the reaction force is a force acting in the direction opposite to the direction of the acceleration.
The lubricating oil circulates inside the lubricating oil cover to reduce the relative friction between the elongated member 210 and the nut member 230.
Due to the relative vertical displacement between the leg 120 and the base 50, the support spring 300 generates an elastic force and a damping force by the expansion and contraction of the plurality of overlapped flat springs. The elastic force is proportional to the relative displacement in the vertical direction. The damping force is proportional to the vertical velocity.
Since the guide rods 320 are guided to the holes provided in the base-side connecting member 420, the horizontal relative displacement between the legs 120 and the base 50 is suppressed.

Next, a mechanical device support structure according to a fifth embodiment of the present invention will be described based on the drawings.
FIG. 10 is a front view of an inertial mass according to a fifth embodiment of the present invention.
The inertial mass used for the mechanical device support structure according to the fifth embodiment corresponds to type D.
The mechanical device support structure includes the inertia mass 200, the support spring 300, the leg side connection member 410, and the base side connection member 420.
The leg side connecting member 410 doubles as the leg side spring connecting member 510.
The base side connecting member 420 doubles as the base side spring connecting member 420.
FIG. 3 shows that four inertial masses 200 and four support springs 300 are arranged at the corners of the legs 120 as viewed from above.

  The configurations of the inertial mass 200, the support spring 300, the leg side connection member 410, and the base side connection member 420 are the same as those in the fourth embodiment, and thus the description thereof is omitted.

  The support spring 300 is vertically and telescopically guided by the outer surface of the lubricating oil cover 240 surrounding the nut member 230.

  In the following, since the operation of the mechanical device support structure according to the fourth embodiment is substantially the same as that according to the fourth embodiment, the description will be omitted.

In the following, the relationship between the specifications of the mechanical device support structure according to the embodiment of the present invention and the vibration suppression thereof will be described using formulas and drawings.
For convenience of explanation, the machine will be described below as a high-speed press.

1.Introduction We examined the effect of inertial mass on vertical displacement control of high-speed press. In setting the inertial mass, the following two conditions should be satisfied. (1) Make the natural frequency and damping coefficient of the vibration system after installation of the inertial mass equal, (2) Make the vertical response displacement 1 mm or less for the given excitation condition .

2. Specifications of mechanical device body and mechanical device support structure Table 1 shows specifications of mechanical device body and mechanical device support structure, and Fig. 11 shows a study model when represented by a mass point system. In the study model, inertia was installed in parallel with a support spring with a damping element below the machine body. As the excitation condition, an excitation force with a frequency of 10 Hz and 6 tonf was applied to the mass point of the machine main body.

ここで、慣性マス設置後の固有振動数と減衰係数が等しいという条件（ｆ−ｆ’、ｈ＝ｈ’）より、慣性マス設置後の機械装置支持構造のバネ剛性ｋと減衰係数ｃ’は式（４
、式（５）で表される。

一方、図１１において、慣性マス設置後の振動方程式は式（６）で表される。ここで、ωは加振固有円振動数、Ｆ０は加振力を表す。

ここで、定常応答解をｘ＝Ａｅ^ｉωｔとおくと、

よって、応答変位と機械装置支持構造の反力Ｆｄは、それぞれ式（７）、式（８）で表される。

表１に示す加振条件において、応答変位が、

以下いう条件を満たす慣性マスｍｄを式（４）、式（５）に代入すると、慣性マス設置後の機械装置支持構造のバネ剛性Ｋ’と減衰係数ｃ’が求まる。 3. A method of setting the spring stiffness k and the damping coefficient c 'of the machine support structure after installation of the inertial mass will be shown below. The natural period, natural frequency and damping coefficient after installation of the inertial mass md are expressed by the equations (1) and (1) ′, the equations (2) and (2) ′ and the equations (3) and (3) ′.

Here, under the condition that the natural frequency after installation of the inertia mass and damping coefficient are equal (f−f ′, h = h ′), the spring stiffness k and the damping coefficient c ′ of the machine support structure after installation of the inertia mass are Formula (4
And is expressed by equation (5).

On the other hand, in FIG. 11, the vibration equation after installation of the inertial mass is expressed by equation (6). Here, ω represents an excitation natural circular frequency, and F 0 represents an excitation force.

Here, ^assuming that the stationary response solution is x = Ae ^iωt ,

Therefore, the response displacement and the reaction force Fd of the mechanical device support structure are expressed by the equations (7) and (8), respectively.

Under the excitation conditions shown in Table 1, the response displacement is

Substituting the inertial mass md satisfying the following conditions into the equations (4) and (5), the spring stiffness K ′ and the damping coefficient c ′ of the mechanical device support structure after installation of the inertial mass can be obtained.

4. Examination results Inertia mass to suppress the vertical response displacement x of the machine to 1 mm or less, and the spring stiffness and damping coefficient of the machine support structure are calculated by the formula calculated by 3. The examination results are shown in Table 2. 13tons (3.25tons per unit when installed at four corners) for suppressing the vertical response displacement x to 1 mm or less, and the spring stiffness of the machine support structure after installation of the inertia masses is 4195kN / m (4 When installed at a corner, the damping coefficient was 100.1 Ns / m (20.0 Ns / m per unit) at 1049 kN / m per unit. Further, Table 3 shows the relationship between the inertial mass and the vertical response displacement when the excitation frequency is changed to 40 kN, 60 kN, and 100 kN, where the excitation frequency is 10 Hz.

検討結果を表４に示す。ボールねじのリードを１６ｍｍ、付加錘の外径を１８０ｍｍ、内径を１５０ｍｍ、長さを５０ｍｍとすると、等価質量３ｔｏｎ程度のダンパーとなる。

5. Outline examination of inertia mass We will examine the outline dimensions of the inertia mass of 3.25 tons equivalent mass obtained in the examination of 4. Here, the inertial mass was temporarily made into a ball screw type, and the equivalent mass was obtained by equation (9).

The examination results are shown in Table 4. When the lead of the ball screw is 16 mm, the outer diameter of the additional weight is 180 mm, the inner diameter is 150 mm, and the length is 50 mm, a damper having an equivalent mass of about 3 tons is obtained.

As described above, the mechanical device support structure according to the present invention has the following effects due to its configuration.
An inertial mass 200 and a support spring 300 between a leg portion 120 having a mounting surface S for mounting a mechanical device main body 110 having a drive portion 111 generating a periodic excitation force and a processing portion 112 and a foundation 50 The inertial mass 200 converts the relative displacement in the vertical direction into the amount of rotation of the rotating body, and the support spring 300 generates an elastic reaction force adopted in the vertical direction corresponding to the relative displacement in the vertical direction. By appropriately selecting the physical specifications of the rotating body and the support spring, it is possible to suppress the vibration of the vibration system formed by the mechanical device 100, the inertial mass 200, and the support spring 300.
Further, since the upper portion of the inertial mass 200 is directly connected to the leg portion 120, the inertial mass 200 converts the relative displacement in the vertical direction into the amount of rotation of the rotating body, which results in the rotational inertia force of the rotating body. The vertical reaction force generated is directly transmitted to the machine.
Also, when it is expressed as a mass point system, the appearance in the vertical direction corresponding to the reaction force in the vertical direction generated by the mass of the machine and the inertia mass and proportional to the relative acceleration in the vertical direction due to the rotational inertia force of the rotating body And the mass of the mechanical mass 100 are directly connected in series, the apparent mass in the vertical direction corresponding to the vertical reaction force generated due to the mass of the mechanical device 100 and the rotational inertia force of the rotating body by the inertial mass 200. And move relative to each other in the vertical direction as a unit.
In addition, apparent mass md in the vertical direction corresponding to the reaction force in the vertical direction generated by the inertial mass 200 in proportion to the relative acceleration in the vertical direction due to the rotational inertia force of the rotating body when represented by a mass point system And the spring constant k of the support spring 300 are selected, the natural frequency of the mass point system is sufficiently smaller than the vibration frequency of the drive unit 111, and the vertical response displacement of the mechanical device body 110 in the vertical direction is a predetermined vertical displacement. Since the value is smaller than the value, the vertical vibration of the mechanical device main body 110 can be suppressed without unreasonableness.
In addition, since the support spring 300 is guided by the inertia mass 200 to expand and contract along the vertical direction corresponding to the relative displacement between the foundation 50 and the leg 120 in the vertical direction, the inertia mass 200 is generated. The reaction force in the vertical direction and the elastic reaction force generated by the support spring 300 act coaxially to make it difficult to generate useless couples in the mechanical device.
Also, using the inertial mass 200 including the elongated member 210 provided with the helical groove, the rotating member 220 that rotates corresponding to the elongated member 210, and the nut member 230 guided along the helical groove, the leg portion The side connecting member 410 restrains the relative displacement between the leg portion 120 and the nut member 230 in the vertical direction and the relative rotation around the vertical axis, and the base side connecting member 420 forms the vertical between the elongated member 210 and the base 50 Since the relative displacement in the direction is restricted and the rotation around the vertical axis is made free, when the relative displacement between the leg portion 120 and the base 50 in the vertical direction occurs, the elongated member 210 is rotated.
Further, since the leg-side connecting member 410 allows relative movement in the horizontal direction between the leg 120 and the nut member 230 within a predetermined stroke range, relative displacement in the horizontal direction occurs in the mechanical device 100. Even in the range of the predetermined stroke, no horizontal force is generated on the nut member.
Also, using the inertial mass 200 including the elongated member 210 provided with the helical groove, the rotating member 220 that rotates corresponding to the elongated member 210, and the nut member 230 guided along the helical groove, the leg portion The side connecting member 410 restrains the relative displacement between the leg portion 120 and the elongated member 210 in the vertical direction and the relative rotation around the vertical axis, and the base side connecting member 420 forms the vertical between the nut member 230 and the base 50 Since the relative displacement in the direction is restricted and the rotation around the vertical axis is made freely, when the relative displacement between the leg 120 and the base 50 in the vertical direction occurs, the nut member 230 is rotated.
Further, since the leg-side connecting member 410 allows relative movement in the horizontal direction of the leg 120 and the elongated member 210 within the range of a predetermined stroke, relative displacement in the horizontal direction occurs in the mechanical device 100. However, horizontal force does not occur in the long member 210 within the range of the predetermined stroke.
Also, using the inertial mass 200 including the elongated member 210 provided with the helical groove, the rotating member 220 that rotates corresponding to the elongated member 210, and the nut member 230 guided along the helical groove, the leg portion The side connecting member 410 restrains the relative displacement between the leg 120 and the elongated member 210 in the vertical direction to allow relative rotation around the vertical axis, and the base side connecting member 420 includes the nut member 230 and the base 50. The relative displacement in the vertical direction is restrained, and the rotation is restrained about the vertical axis, so when the relative displacement in the vertical direction between the leg portion 120 and the foundation 50 occurs, the elongated member 210 is rotated.
Further, since the base side connecting member 410 allows the horizontal relative displacement between the nut member 230 and the base 50 to be freely within the range of a predetermined stroke, the horizontal relative displacement occurs in the mechanical device 100. Also, no horizontal force is generated on the nut member 230 within the predetermined stroke range.
Also, using the inertial mass 200 including the elongated member 210 provided with the helical groove, the rotating member 220 that rotates corresponding to the elongated member 210, and the nut member 230 guided along the helical groove, the leg portion The side connecting member 410 restrains the relative displacement between the leg 120 and the nut member 230 in the vertical direction to allow relative rotation around the vertical axis, and the base side connecting member 420 includes the long member 210 and the base 50. Since the relative displacement in the vertical direction is restrained and the rotation is restrained about the vertical axis, when the relative displacement between the leg 120 and the foundation 50 in the vertical direction occurs, the nut member 230 is rotated.
Further, since the base side connecting member 420 allows relative relative displacement between the nut member 230 and the base 50 in the horizontal direction within a predetermined stroke range, relative displacement in the horizontal direction occurs in the mechanical device 100. Also, horizontal force does not occur in the elongated member 210 within the predetermined stroke range.
Further, since the lubricating oil cover 240 encloses the nut member 230 and stores the lubricating oil inside, the nut member 230 is stably guided following the spiral groove of the elongated member 210.
Further, since the support spring 300 is guided so as to be able to expand and contract in the vertical direction by the outer surface of the nut member 230 guided to the long member 210 of the inertia mass 200, the reaction force in the vertical direction generated by the inertia mass 200 And the elastic reaction force generated by the support spring act on the same axis, and it is difficult for the mechanical device 100 to generate an unnecessary couple.
As a result, it is possible to provide a mechanical device support structure that does not require a gantry compared to the conventional structure.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the invention.
Although the example which generates a damping force with a further spring was demonstrated, it is not limited to this. For example, a viscous body may be used to generate a damping force.

S Mounting surface 50 Foundation 60 Mounting base 100 Machinery 110 Main body of machine 111 Drive part 112 Machining part 113 Material inlet 114 Control board 120 Leg part 200 Inertia mass 210 Long member 220 Long member 220 Rotation member 230 Nut member 240 Lubricant cover 300 Support spring Reference Signs List 310 flat spring 320 guide rod 410 leg side connecting member 411 leg side connecting member main body 412 flexible mechanism 420 base side connecting member 510 leg side spring connecting member 520 base side spring connecting member

JP 2007-71309 JP-A-9-89028 Academic Meeting of the Japan Society of Mechanical Engineers (Tokai), in October 1960, anti-vibration measures for large high-speed press using dynamic vibration absorber, Yoshiyuki Hashimoto, Yu Kushida, Takeshi Hiromatsu, Takayuki Abe, Yuichi Saito

Claims (18)

A mechanical device supporting structure for supporting a mechanical device having a mechanical device body provided with a driving portion provided on a foundation and generating a periodic excitation force and a leg portion having a mounting surface for mounting the mechanical device body,
Located between the legs and the foundation,
An inertial mass that converts the relative vertical displacement between the foundation and the leg into the amount of rotation of the rotating body;
A support spring generating an elastic reaction force acting along the vertical direction in response to the vertical relative displacement between the foundation and the leg;
Equipped with
The top of the inertial mass is directly connected to the legs,
When expressed in a mass point system, the mass of the machine and the apparent mass in the vertical direction corresponding to the reaction force in the vertical direction generated due to the rotational inertia force of the rotating body by the inertia mass are directly connected in series;
The apparent mass in the vertical direction corresponding to the reaction force in the vertical direction caused by the inertia force of the rotating body by the inertia mass when expressed by the mass point system, and the spring constant of the support spring are the mass point It is selected such that the natural frequency of the system is smaller than the excitation frequency of the drive unit, and the vertical response displacement in the vertical direction of the mechanical device main body is smaller than a predetermined vertical displacement value.
A mechanical device support structure characterized by The apparent mass in the vertical direction corresponding to the reaction force in the vertical direction caused by the inertia force of the rotating body by the inertia mass when expressed by the mass point system, and the spring constant of the support spring are the mass point It is selected so that the natural frequency of the system is less than 1⁄4 of the vibration frequency of the drive unit, and the vertical response displacement of the machine body in the vertical direction is smaller than a predetermined vertical displacement value. is there,
Machine support structure according to claim 1, characterized in that. The support spring is guided by the inertia mass and extends and contracts in the vertical direction in response to the vertical relative displacement between the base and the leg.
The mechanical device support structure according to claim 2 , characterized in that: A leg side connecting member that connects the leg and the inertial mass;
A base-side connecting member that connects the inertia mass and the base;
Equipped with
An elongated member provided with a helical groove, which is a helical groove having a predetermined lead along the longitudinal direction on an outer peripheral surface of the inertial mass, a rotating member that rotates in response to rotation of the elongated member, and the helical groove And a nut member guided in accordance with
The leg portion, the nut member, and the elongated member so that the leg portion side connecting member restrains the relative displacement between the leg portion and one of the nut member and the elongated member in the vertical direction and the relative rotation around the vertical axis. Connect with one of the
The other of the nut member and the elongated member is arranged so that the base side connecting member restrains the relative displacement between the other of the nut member and the other of the elongated member and the base in the vertical direction and allows rotation around the vertical axis. Connect the foundation,
The machine apparatus support structure according to claim 3 , characterized in that: The leg portion, the nut member, and the long member so that the leg portion side connecting member can freely move the relative movement in the horizontal direction between the leg portion and one of the nut member and the long member within a predetermined stroke range. Connect with one of the members,
The machine apparatus support structure according to claim 4 , A leg side connecting member that connects the leg and the inertial mass;
And a base-side connecting member connecting the inertia mass and the base,
An elongated member provided with a spiral groove, which is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface, a nut member guided along the spiral groove, and a rotation of the nut member And a corresponding rotating member,
The leg portion and the elongated member are configured such that the leg portion side connecting member restrains the relative displacement between the leg portion and one of the elongated member and the nut member in the vertical direction and allows relative rotation about the vertical axis. Connect one of the nut members,
The base side connecting member restrains the relative displacement between the other of the long member and the other of the nut member and the base in the vertical direction, and restricts the rotation around the vertical axis with the other of the long member and the nut member and the base To connect with
The machine apparatus support structure according to claim 3 , characterized in that: The other of the elongated member and the nut member and the foundation so that the foundation side connecting member allows relative horizontal displacement between the other of the elongated member and the other of the nut member and the foundation within a predetermined stroke range. Link,
7. The machine support structure according to claim 6 , wherein The inertial mass includes the elongated member, the nut member, and a lubricating oil cover for enclosing the lubricating oil inside the nut member;
A machine support structure according to any one of claims 4 or 6 , characterized in that: The inertial mass comprises the elongated member and the nut member having a cylindrical outer surface;
The support spring is vertically and telescopically guided by the outer surface of the nut member.
A machine support structure according to any one of claims 4 or 6 , characterized in that: A mechanical device supporting structure for supporting a mechanical device having a mechanical device body provided with a driving portion provided on a foundation and generating a periodic excitation force and a leg portion having a mounting surface for mounting the mechanical device body,
Located between the legs and the foundation,
An inertial mass that converts the relative vertical displacement between the foundation and the leg into the amount of rotation of the rotating body;
A support spring generating an elastic reaction force acting along the vertical direction in response to the vertical relative displacement between the foundation and the leg;
Equipped with
The apparent mass in the vertical direction corresponding to the reaction force in the vertical direction caused by the inertia force of the rotating body by the inertia mass when expressed by the mass point system, and the spring constant of the support spring are the mass point system Is selected such that the natural frequency of the motor is smaller than the vibration frequency of the drive unit, and the vertical response displacement in the vertical direction of the mechanical device body is smaller than a predetermined vertical displacement value.
A mechanical device support structure characterized by The apparent mass in the vertical direction corresponding to the reaction force in the vertical direction caused by the inertia force of the rotating body by the inertia mass when expressed by the mass point system, and the spring constant of the support spring are the mass point It is selected so that the natural frequency of the system is less than 1⁄4 of the vibration frequency of the drive unit, and the vertical response displacement of the machine body in the vertical direction is smaller than a predetermined vertical displacement value. is there,
The machine support structure according to claim 10 , characterized in that: A mechanical device supporting structure for supporting a mechanical device having a mechanical device body provided with a driving portion provided on a foundation and generating a periodic excitation force and a leg portion having a mounting surface for mounting the mechanical device body,
Located between the legs and the foundation,
An inertial mass that converts the relative vertical displacement between the foundation and the leg into the amount of rotation of the rotating body;
A support spring generating an elastic reaction force acting along the vertical direction in response to the vertical relative displacement between the foundation and the leg;
Equipped with
The support spring is guided by the inertia mass and extends and contracts in the vertical direction in response to the vertical relative displacement between the base and the leg.
A mechanical device support structure characterized by A mechanical device supporting structure for supporting a mechanical device having a mechanical device body provided with a driving portion provided on a foundation and generating a periodic excitation force and a leg portion having a mounting surface for mounting the mechanical device body,
Located between the legs and the foundation,
An inertial mass that converts the relative vertical displacement between the foundation and the leg into the amount of rotation of the rotating body;
A support spring generating an elastic reaction force acting along the vertical direction in response to the vertical relative displacement between the foundation and the leg;
A leg side connecting member that connects the leg and the inertial mass;
A base-side connecting member that connects the inertia mass and the base;
Equipped with
An elongated member provided with a helical groove, which is a helical groove having a predetermined lead along the longitudinal direction on an outer peripheral surface of the inertial mass, a rotating member that rotates in response to rotation of the elongated member, and the helical groove Holding a nut member guided according to
The leg portion, the nut member, and the elongated member so that the leg portion side connecting member restrains the relative displacement between the leg portion and one of the nut member and the elongated member in the vertical direction and the relative rotation around the vertical axis. Connect with one of the
The other of the nut member and the elongated member is arranged so that the base side connecting member restrains the relative displacement between the other of the nut member and the other of the elongated member and the base in the vertical direction and allows rotation around the vertical axis. Connect the foundation,
A mechanical device support structure characterized by The leg portion, the nut member, and the elongated member allow the leg portion side connecting member to freely move the relative movement in the horizontal direction between the leg portion and one of the nut member and the elongated member within a predetermined stroke range. Connect with one of the
The machine support structure according to claim 13 , characterized in that: A mechanical device supporting structure for supporting a mechanical device having a mechanical device body provided with a driving portion provided on a foundation and generating a periodic excitation force and a leg portion having a mounting surface for mounting the mechanical device body,
Located between the legs and the foundation,
An inertial mass that converts the relative vertical displacement between the foundation and the leg into the amount of rotation of the rotating body;
A support spring generating an elastic reaction force acting along the vertical direction in response to the vertical relative displacement between the foundation and the leg;
A leg side connecting member that connects the leg and the inertial mass;
A base-side connecting member that connects the inertia mass and the base;
Equipped with
An elongated member provided with a spiral groove, which is a spiral groove having a predetermined lead along the longitudinal direction on the outer peripheral surface, a nut member guided along the spiral groove, and a rotation of the nut member The leg portion side connecting member restricts the relative displacement between the leg portion and one of the elongated member and the nut member in the vertical direction and has free rotation relative to the vertical axis. Connecting the leg to one of the elongated member and the nut member,
The base side connecting member restrains relative displacement between the other of the long member and the other of the nut member and the base in the vertical direction and restricts rotation around the vertical axis, and the other of the long member and the nut member and the base To connect with
A mechanical device support structure characterized by The other of the elongated member and the nut member and the foundation so that the foundation side connecting member allows relative horizontal displacement between the other of the elongated member and the other of the nut member and the foundation within a predetermined stroke range. Link,
The machine support structure according to claim 15 , characterized in that: The inertial mass includes the elongated member, the nut member, and a lubricating oil cover for enclosing the lubricating oil inside the nut member;
A mechanical device support structure according to any one of claims 13 or 15 , characterized in that. The inertial mass comprises the elongated member and the nut member having a cylindrical outer surface;
The support spring is vertically and telescopically guided by the outer surface of the nut member.
A mechanical device support structure according to any one of claims 13 or 15 , characterized in that.

Images