JP4621555B2 - Press-fitting device and press-fitting method - Google Patents

Description

  The present invention relates to a press-fitting device and a press-fitting method for press-fitting a press-fit component into a press-fit component.

  For example, as one method for mounting a bearing on a housing that rotatably supports an axle shaft of an automobile, press-fitting is conventionally performed. In order to press-fit the bearing into the housing, a relatively strong pressing force is required, and a press-fitting device having a dedicated hydraulic cylinder has been used.

  Conventionally, when press-fitting a press-fit pin and press-fitting it into a through-hole of a printed circuit board, press-fitting the press-fit pin while applying ultrasonic vibration along the pressing direction to press-fit the pin. 2. Description of the Related Art A press-fitting device that reduces target pressure input is known (see, for example, Patent Document 1).

  Also, conventionally, after fixing a metal shell having a through hole to a support, inserting a sheathed heater into the through hole and temporarily assembling, the shaft is added while applying ultrasonic vibration along the pressing direction to the sheathed heater. By pressing in the direction and press-fitting into the through-hole of the metal shell, excessive load that leads to eccentricity between the sheathed heater and the metal shell is continuously applied to the sheathed heater when the sheathed heater is press-fitted into the metal shell. There is known a press-fitting device that prevents the sheath heater from being eccentric with respect to the metal shell of the sheathed heater and prevents the sheathed heater from being broken (for example, see Patent Document 2).

JP 2001-24393 A JP 2003-336842 A

  However, the dedicated hydraulic cylinder provided in the press-fitting device or the like for press-fitting the bearing into the housing is large in order to ensure a relatively strong pressing force, has a large energy consumption, and has a large running cost. There are many restrictions on the degree of design freedom, and the apparatus is expensive.

  In addition, a device that press-fits the conventional press-fit pin while applying ultrasonic vibration along the pressing direction or a device that press-fitted a sheathed heater into the metal shell interposes a vibrator that adds ultrasonic vibration. The press-fit pins and sheathed heaters, which are press-fitted parts, are pressed into the through-holes and metal shells of the printed circuit board that are press-fitted parts.

  Therefore, when such a configuration is applied to a press-fitting device for a press-fitting component that is required to be pressed against a press-fitted component with a relatively strong pressing force, there is a problem that the vibrator cannot withstand the strong pressing force. Have. Also, since any conventional device vibrates the press-fit pins and sheathed heaters that are press-fit components in the pressing direction, such a configuration is a press-fit component when applied to a press-fit device for a bearing to a housing, for example. The bearing is vibrated in the axial direction, which may cause a malfunction of the bearing. Furthermore, these devices must be provided with a moving mechanism that causes the vibrator to follow in accordance with the press-fitting movement of the press-fitting component to the press-fitted component, which complicates the structure of the device.

  The present invention has been made in view of the above problems, and its object is to press-fit that can easily and reliably reduce the pressing force of a press-fit component that is required to be pressed against the press-fit component with a relatively strong pressing force. The object is to provide an apparatus and a press-fitting method.

The press-fitting device according to the first aspect of the present invention that solves the above-described problem includes a holding unit that holds a press-fitted component in which a press-fitting hole extending in the axial direction is formed, and the press-fitted component that is held by the holding unit A pressing unit that presses the press-fitting component into the press-fitting hole along the axial direction of the press-fitting hole, and a vibration unit that adds ultrasonic vibration in a direction orthogonal to the pressing direction of the pressing unit to the press-fitting component to vibrate. The vibration means includes a first vibration generation means, a first vibrator provided in the first vibration generation means and vibrated by ultrasonic vibration generated by the first vibration generation means, and a second The second vibration generating means and the second vibrator that is provided in the second vibration generating means and vibrates due to the ultrasonic vibration generated by the second vibration generating means, and the press-fitted parts are disposed opposite to each other. And having the first vibrator Moving at least one of the first vibration generating means and the second vibration generating means having the second vibrator to place the press-fit component between the first vibrator and the second vibrator. And a vibrator pressing means for clamping and pressing the first vibrator and the second vibrator against the press-fitted component .

According to a second aspect of the present invention, there is provided a press-fitting device according to a second aspect of the present invention, comprising: a holding unit that holds a press-fitted part in which a press-fitting hole extending in the axial direction has the same diameter from a circular opening; A pressing hand that presses a press-fitted part having an outer peripheral surface extending in the axial direction with a constant diameter into a press-fitted hole of the press-fitted part along the axial direction of the press-fitted part, and ultrasonic vibration in the radial direction of the press-fitted hole Vibration means added to the press-fitted component, and the vibration means is provided in the first vibration generation means and the first vibration generation means, and the vibration generated by the first vibration generation means. A first vibrator that vibrates by sonic vibration; a second vibrator that generates vibration by ultrasonic vibration that is provided in the second vibration generating means and that is provided by the second vibration generating means; , Opposite to each other with the press-fit parts in between And moving at least one of the first vibration generating means having the first vibrator and the second vibration generating means having the second vibrator, and moving the first vibrator and the second vibration. The press-fitting component is sandwiched between a child and a vibrator pressing means for pressing the first vibrator and the second vibrator against the press-fitted component .

According to a third aspect of the present invention, in the press-fitting device according to the first or second aspect, the vibration means is configured such that the first vibrator and the second vibrator are inserted into the press-fitted component by the vibrator pressing means. And a pressing force adjusting means capable of adjusting a pressing force for pressing .

Invention according to claim 4, in press-fitting apparatus according to any one of請Motomeko 1-3, the vibrating means is capable of changing the oscillation frequency of the ultrasonic vibration in the range of 20 kilohertz to 100 kilohertz It has a vibration frequency changing means.

The press-fitting method according to a fifth aspect of the present invention is the press-fitting method in which the press-fitting part is press-fitted into the press-fitted part formed with the press-fitting hole held by the holding means by the pressing means. Provided in the first vibration generating means and vibrated by the ultrasonic vibration generated by the first vibration generating means, the second vibration generating means, and the second vibration generating means provided in the second vibration generating means. First vibration generating means having a second vibrator that vibrates due to ultrasonic vibration generated by the vibration generating means, and the first vibrator disposed opposite to each other with the press-fit component interposed therebetween, and the first At least one of the second vibration generating means having two vibrators is moved so that the press-fitted part is sandwiched between the first vibrator and the second vibrator, and the first vibrator and The second vibrator is inserted into the press-fit portion. Vibrator pressing means for pressing the press-fitting part between the first vibrator and the second vibrator by the vibrator pressing means, and the first vibrator and The second vibrator is pressed against the press-fitted part, and the first vibration generating means having the first vibrator and the second vibration generating means having the second vibrator are orthogonal to the press-fitting direction. The press-fitting component is press-fitted into the press-fit component in a state where ultrasonic vibration in a direction is applied to the press-fit component.

According to the first aspect of the present invention, the vibration means includes a first vibration generating means having a first vibrator and a second vibrator having a press-fitted component interposed therebetween and a second vibrator having a second vibrator. Vibration generating means, and at least one of the first vibrating means and the second vibrating means is moved by the vibrator pressing means to press-fit between the first vibrator and the second vibrator. Since the ultrasonic vibration in the direction perpendicular to the pressing direction is added to the press-fitted part while sandwiching the part, the ultrasonic vibration is applied to the press-fitted part from two directions facing each other with the press-fitted part in between. Therefore, ultrasonic vibration can be applied to the press-fit component without being affected by the pressing force of the pressing means, and the press-fit component can be reliably vibrated. Therefore, the pressing force of the press-fitting component that is required to be pressed against the press-fitted component with a relatively strong pressing force can be easily and reliably reduced, and the press-fitting component can be easily press-fitted into the press-fitted component.

  Further, for example, when the bearing is press-fitted into a housing that rotatably supports an axle shaft of an automobile, the housing that is a press-fit part is vibrated, so that the influence of ultrasonic vibration on the bearing that is the press-fit part can be suppressed.

  Further, since the press-fit component held by the holding means is ultrasonically vibrated, it is not necessary to synchronize the vibration generating means with the press-fit component whose relative position changes in the press-fitting process, and the structure is simplified. be able to.

According to the second aspect of the present invention, the vibration means includes a first vibration generating means having a first vibrator and a second vibrator having a press-fitted component interposed therebetween and a second vibrator having a second vibrator. Vibration generating means, and at least one of the first vibrating means and the second vibrating means is moved by the vibrator pressing means to press-fit between the first vibrator and the second vibrator. The ultrasonic vibration that vibrates in the radial direction of the press-fitting hole is added to the press-fitted part by sandwiching the part, so that the ultrasonic vibration is applied to the press-fitted part from two directions facing each other with the press-fitted part interposed therebetween. The ultrasonic vibration can be applied to the press-fit component without being affected by the pressing force of the pressing means, and the press-fit component can be vibrated reliably. Therefore, the pressing force of the press-fitting component that is required to be pressed against the press-fitted component with a relatively strong pressing force can be easily and reliably reduced, and the press-fitting component can be easily press-fitted into the press-fitted component.

  Further, for example, when the bearing is press-fitted into a housing that rotatably supports an axle shaft of an automobile, the housing that is a press-fit part is vibrated, so that the influence of ultrasonic vibration on the bearing that is the press-fit part can be suppressed.

  Further, since the press-fit component held by the holding means is ultrasonically vibrated, it is not necessary to synchronize the vibration generating means with the press-fit component whose relative position changes in the press-fitting process, and the structure is simplified. be able to.

The invention according to claim 3 specifically shows an example of the configuration of the vibration means. According to this, the vibration means has the pressing force adjusting means, and the vibrator pressing means The pressing force for pressing the first vibrator and the second vibrator against the press-fit component can be adjusted. Therefore, the pressing force can be changed according to the material, shape, etc. of the press-fit component, and ultrasonic vibration can be appropriately added to the press-fit component.

The invention according to claim 4 specifically shows an example of the configuration of the vibration means, and according to this, the vibration means has the vibration frequency changing means, and the vibration frequency of the ultrasonic vibration. Can be changed in the range of 20 kilohertz to 100 kilohertz. Therefore, the press-fit component can be vibrated by selecting an optimum vibration frequency for press-fitting the press-fit component into the press-fit component according to the shape and material of the press-fit component and the press-fit component.

According to the fifth aspect of the present invention, since the ultrasonic vibration in the direction orthogonal to the pressing direction is applied to the press- fit component from the two directions facing each other with the press-fit component interposed therebetween, Without being affected by the pressing force of the means, ultrasonic vibration can be applied to the press-fit component, and the press-fit component can be reliably vibrated. Therefore, the pressing force of the press-fitting component that is required to be pressed against the press-fitted component with a relatively strong pressing force can be easily and reliably reduced, and the press-fitting component can be easily press-fitted into the press-fitted component.

  Further, for example, when the bearing is press-fitted into a housing that rotatably supports an axle shaft of an automobile, the housing that is a press-fit part is vibrated, so that the influence of ultrasonic vibration on the bearing that is the press-fit part can be suppressed.

  Further, since the press-fit component held by the holding means is ultrasonically vibrated, it is not necessary to synchronize the vibration generating means with the press-fit component whose relative position changes in the press-fitting process, and the structure is simplified. be able to.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating the configuration of a press-fitting device 1 according to the present embodiment.

  The press-fitting device 1 press-fits a bearing (press-fit part) 110 into a housing (press-fit part) 100 that rotatably supports an axle shaft of an automobile. The housing 100 includes a cylindrical boss portion 101 and a large-diameter portion 102 whose diameter is increased through a step at one end of the boss portion 101. A shaft hole 103 is formed so as to penetrate through the centers of the boss portion 101 and the large diameter portion 102. A press-fit hole 104 into which the bearing 110 can be press-fit from the outside in the axial direction is recessed coaxially with the shaft hole 103 at the end of the shaft hole 103 on the large diameter portion 102 side.

  The press-fitting hole 104 has a circular opening 104a formed at the center of the end face of the large-diameter portion 102, and has a concave shape having the same diameter from the opening 104a and extending in the axial direction. The bearing 110 is formed so that the outer peripheral surface thereof has a constant diameter and extends in the axial direction.

  In the press-fitting device 1, a table 3 is installed along a floor (not shown), and a portal frame 4 is erected on the table 3. The table 3 has an upper surface portion 3a extending horizontally, and a holding means 10 for holding the housing 100 is provided at a substantially central position of the upper surface portion 3a.

  The holding means 10 has a holding table 11 having a holding hole 13 having an inner diameter into which the boss 101 of the housing 100 can be inserted. The holding table 11 has a cylindrical shape with a predetermined thickness, and a lower end is fixed to the upper surface portion 3a of the table 3, extends upward from the upper surface portion 3a of the table 3, and is mounted on the upper end thereof. The mounting surface 12 is formed to extend horizontally.

  The mounting surface 12 is formed so as to face and contact the large-diameter portion 102 of the housing 100 by inserting the boss portion of the housing 100 into the holding hole 13 of the holding table 11. The holding hole 13 has an inner diameter that is opposed with a predetermined gap between the inner peripheral surface of the holding hole 13 and the outer peripheral surface of the boss portion 101 when the boss portion 101 is inserted.

  Therefore, the holding means 10 inserts the boss portion of the housing 100 into the holding hole 13 of the holding base 11 and places the large diameter portion 102 of the housing 100 on the mounting surface 12, so that the shaft hole 103 of the housing 100 is vertically moved. Can be held in a posture that extends in the direction and the opening 104 a of the press-fitting hole 104 opens upward, and is further formed between the inner peripheral surface of the holding hole 13 and the outer peripheral surface of the boss portion 101. It can be held so that it can move in the horizontal direction by the gap.

  The gate-shaped frame 4 is spanned between a pair of vertical frames 5L and 5R erected on the left and right ends of the table 3, and the upper ends of the pair of vertical frames 5L and 5R. 11 and an upper frame 6 that extends horizontally above 11, and the upper frame 6 is provided with pressing means 20 that presses the bearing 110 against the housing 100.

  The pressing means 20 has a cylinder body 21a fixed so as to protrude upward from the upper frame 6 at a substantially central position of the upper frame 6, and protrudes downward from the cylinder body 21a and moves up and down by hydraulic pressure supply control. The hydraulic cylinder 21 has a moving hydraulic ram 21b.

  The hydraulic cylinder 21 moves the hydraulic ram 21b downward (in the direction indicated by a large arrow in the figure) by hydraulic pressure supply control so as to approach the holding table 11, and from above the housing 100 held by the holding table 11. It approaches the press-fitting hole 104, abuts on the bearing 110 placed on the opening 104 a of the press-fitting hole 104, presses the bearing 110 downward along the axial direction of the press-fitting hole 104, and enters the press-fitting hole 104. It is configured to press fit.

  In addition, ultrasonic vibration is applied to the housing 100 to the pair of vertical frames 5L and 5R constituting the portal frame 4 so that the housing 100 is perpendicular to the pressing direction of the pressing means 20 (small arrows in the figure). In other words, the vibration means 30 for vibrating in the radial direction of the press-fitting hole 104 is provided.

  The vibration unit 30 includes a first vibration generation unit 31 and a second vibration generation unit 41 that are disposed at positions spaced apart from each other with the housing 100 interposed therebetween. The first vibration generating means 31 is fixed to the left vertical frame 5L, the first vibrator 32 protrudes in a direction perpendicular to the pressing direction of the pressing means 20, and the first vibration generating means 31 protrudes from the large diameter portion 102 of the housing 100. One transducer 32 is provided so that the tip end thereof abuts.

  The second vibration generating means 41 is supported by the right vertical frame 5R so as to be capable of reciprocating along a direction orthogonal to the pressing direction of the pressing means 20. The distal end portion of the second vibrator 42 is opposed to the large-diameter portion 102 of the housing 100, and can be pressed by the forward movement of the second vibration generating means 41.

  A wedge-shaped horn is formed at the distal end of the first vibrator 32 and the distal end of the second vibrator 42 so that the vertical width gradually decreases as it moves toward the distal end. The first vibration generating means 31 and the second vibration generating means 41 generate ultrasonic vibrations that vibrate in a direction orthogonal to the pressing direction of the pressing means 20 based on a control signal from the vibration control means (vibration frequency adjusting means) 33. The vibration frequency of ultrasonic vibration is changed between 20 kilohertz and 100 kilohertz by, for example, selectively mounting a vibrator that is generated and selected from a plurality of types of first vibrator 32 and second vibrator 42 according to a desired frequency. It has the structure which can do.

  Then, the second vibration generating means 41 is moved forward along the direction perpendicular to the pressing direction of the pressing means 20 to the right vertical frame 5R, and the second vibrator 42 is moved to the large diameter portion 102 of the housing 100. A vibrator pressing means 50 for pressing is provided.

  The vibrator pressing means 50 includes a pneumatic cylinder 51 in which a cylinder body 51a is fixed to the right vertical frame 5R, and a cylinder rod 51b is connected to the second vibration generating means 41. Then, by the compressed air supply control, the cylinder rod 51b of the pneumatic cylinder 51 is protruded from the cylinder body 51a to move the second vibration generating means 41 forward, and the second vibrator 42 is moved to the large diameter portion 102 of the housing 100. The large diameter portion 102 of the housing 100 is clamped from both sides along the radial direction of the press-fitting hole 104 in cooperation with the first vibrator 32. Yes.

  Further, an air pressure regulator 52 for adjusting the pressure of the compressed air is provided between the cylinder body 51 a of the pneumatic cylinder 51 and the compressed air supply source, and the second vibrator 42 has a large diameter of the housing 100. The pressing force that presses against the portion 102 can be adjusted (pressing force adjusting means). Accordingly, the force for holding the large-diameter portion 102 of the housing 100 by the first vibrator 31 and the second vibrator 42 is varied, and ultrasonic vibration is appropriately applied according to the material, shape, etc. of the housing 100. Can do.

  Next, a press-fitting method using the press-fitting device 1 having the above configuration will be described below.

  First, the housing 100 is held by the holding means 10 with the hydraulic ram 21b of the pressing means 20 retracted upward and the cylinder rod 51b of the vibrator pressing means 50 retracted to the right. The housing 100 is held by the holding means 10 by inserting the boss 101 of the housing 100 into the holding hole 13 of the holding base 11 and placing the large diameter portion 102 on the mounting surface 12.

  As a result, the housing 100 is held in a posture in which the shaft hole 103 extends in the vertical direction and the opening 104a of the press-fitting hole 104 opens upward, and further, the inner peripheral surface of the holding hole 13 and the boss portion The first vibrator 32 of the first vibration generating means 31 is in contact with the large-diameter portion 102 of the housing 100 or is held so as to be movable in the horizontal direction by a predetermined gap formed between the outer peripheral surface of the housing 101 and It is in a state of facing each other with a predetermined gap.

  Then, the bearing 110 is placed on the opening 104 a and set coaxially with the press-fitting hole 104. Then, the cylinder rod 51b of the vibrator pressing means 50 is protruded from the cylinder body 51a, the second vibration generating means 41 is moved forward, and the second vibrator 42 is brought into contact with the large diameter portion 102 of the housing 100 and pressed. The large diameter portion 102 is pressed from the left and right sides along the radial direction of the press-fitting hole 104 by the first vibrator 32 and the second vibrator 42 in a direction perpendicular to the pressing direction of the means 20.

  Then, the first vibration generating means 31 and the second vibration generating means 41 generate ultrasonic vibrations respectively, and the ultrasonic waves in the direction orthogonal to the press-fitting direction from the first vibrator 32 and the second vibrator 42 to the housing 100 are obtained. Vibration is applied, and the housing 100 is vibrated in the radial direction of the press-fitting hole 104. Then, in such a vibration state, the hydraulic ram 21 b of the pressing means 20 protrudes from the cylinder body 21 a and contacts the upper surface of the bearing 110, and the bearing 110 is pressed downward along the axial direction of the press-fitting hole 104 to press-fitting the hole 104. Press fit inside.

  According to the press-fitting device 1 having the above configuration, since the ultrasonic vibration in the direction orthogonal to the pressing direction of the pressing means 20 is applied to the housing 100, the housing 100 is not affected by the pressing force of the pressing means 20. Ultrasonic vibration can be added to the housing 100, and the housing 100 can be reliably vibrated.

  Then, the housing 100 can be vibrated in the radial direction of the press-fitting hole 104, the frictional resistance between the inner peripheral surface of the press-fitting hole 104 and the outer peripheral surface of the bearing 110 is greatly reduced, and the bearing 110 is press-fitted into the recess 102. The pressing force required to do this can be greatly reduced.

  Thereby, for example, the pressing force of the bearing 110 that is required to be pressed against the housing 100 with a relatively strong pressing force can be easily and reliably reduced. Therefore, the pressing force by the pressing means 20 can be reduced to save energy of the pressing means 20.

  Further, since the press-fitting device 1 vibrates the housing 100 by the vibration means 30 and does not apply vibration to the bearing 110, the influence of the ultrasonic vibration on the ball can be suppressed. Performance can be secured.

  In the press-fitting device 1, the vibration means 30 applies ultrasonic vibration to the housing 100 from two directions facing each other with the housing 100 interposed therebetween by the first vibrator 32 and the second vibrator 42. 100 can be vibrated reliably with a stronger force.

  Further, by adjusting the pressing force according to the material and shape of the housing 100, ultrasonic vibration can be appropriately applied to the housing 10. Further, by changing the frequency of the ultrasonic vibration to the natural frequency of the housing 100, such as by adjusting the frequency within the range of 20 kHz to 100 kHz, the housing 100 can be vibrated at the optimal vibration frequency for press-fitting. It can be done easily and reliably.

  Furthermore, the press-fitting device 1 can be easily configured by retrofitting the vibration means 30 to an existing press-fitting device having the holding means 10 and the pressing means 20, and has the effect that it can be easily implemented. Yes.

  In addition, this invention is not limited to the above-mentioned embodiment, A various change is possible in the range which does not deviate from the meaning of this invention. For example, in the above-described embodiment, the first vibration generating means 31 is fixed to the left vertical frame 5L, and the second vibration generating means 41 is provided on the right vertical frame 5R so as to be reciprocally movable so as to press the vibrator. Although the case where the housing 100 is sandwiched between the first vibrator 32 and the second vibrator 42 by moving forward by the means 50 has been described as an example, the first vibration generating means 31 is also attached to the left vertical frame 5L. The housing 100 may be sandwiched between the first vibrator 32 and the second vibrator 42 by being reciprocally moved and moved forward by the vibrator pressing means 50.

  In the above-described embodiment, the case where the vibration unit 30 includes two vibration generation units, the first vibration generation unit 31 and the second vibration generation unit 41, has been described as an example. Good. For example, in the case of the above embodiment, the housing 100 is held by a clamp or the like so that the housing 100 does not move in the horizontal direction on the holding table 11, and the vibration generating means is moved along a direction orthogonal to the pressing direction of the pressing means 20. Thus, the ultrasonic vibration is applied to the housing 100 by bringing the vibrator into contact with the large-diameter portion 102 of the housing 100 and pressing it in the radial direction of the press-fitting hole 104. According to this, the vibration generating means and the vibrator can be reduced to one, and the parts cost and manufacturing cost of the press-fitting device 1 can be reduced.

  Further, in the above-described embodiment, the housing 100 that rotatably supports the axle shaft of the automobile as an example of the press-fit part and the bearing 110 as an example of the press-fit part have been described as examples. Is also applicable.

It is a figure explaining the structure of the press injection apparatus concerning this Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Press-fit apparatus 10 Holding means 20 Press means 30 Vibration means 31 First vibration generation means 32 First vibrator 33 Vibration control means (vibration frequency adjustment means)
41 Second vibration generating means 42 Second vibrator 50 Vibrator pressing means 52 Pneumatic regulator (pressing force adjusting means)
100 Housing (Press-fit part)
104 Press-fit hole 104a Opening 110 Bearing (Press-fit part)

Claims (5)

A holding means for holding a press-fit component in which a press-fit hole extending in the axial direction is formed;
A pressing unit that presses the press-fitting component along the axial direction of the press-fitting hole into the press-fitting hole of the press-fitted component held by the holding unit;
Vibration means for adding ultrasonic vibration in a direction perpendicular to the pressing direction of the pressing means to the press-fitted component to vibrate ,
The vibration means includes
A first vibration generating means and a first vibrator that is provided in the first vibration generating means and vibrates by ultrasonic vibration generated by the first vibration generating means;
A second vibration generating means and a second vibrator that is provided in the second vibration generating means and vibrates by ultrasonic vibration generated by the second vibration generating means;
By moving at least one of the first vibration generating means having the first vibrator and the second vibration generating means having the second vibrator arranged to face each other with the press-fitted part interposed therebetween. Vibrator pressing means for sandwiching the press-fit component between the first vibrator and the second vibrator and pressing the first vibrator and the second vibrator against the press-fit component; A press-fitting device comprising: Holding means for holding a press-fit component in which a press-fit hole extending in the axial direction with the same diameter from a circular opening is formed;
A pressing hand that presses a press-fit component having an outer peripheral surface having a constant diameter and extending in the axial direction into the press-fit hole of the press-fit component held by the holding means;
Vibration means for adding ultrasonic vibration in the radial direction of the press-fitting hole to the press-fitted component to vibrate ;
The vibration means includes
A first vibration generating means and a first vibrator that is provided in the first vibration generating means and vibrates by ultrasonic vibration generated by the first vibration generating means;
A second vibration generating means and a second vibrator that is provided in the second vibration generating means and vibrates by ultrasonic vibration generated by the second vibration generating means;
By moving at least one of the first vibration generating means having the first vibrator and the second vibration generating means having the second vibrator arranged to face each other with the press-fitted part interposed therebetween. Vibrator pressing means for sandwiching the press-fit component between the first vibrator and the second vibrator and pressing the first vibrator and the second vibrator against the press-fit component; A press-fitting device comprising: The vibration means includes a pressing force adjusting means capable of adjusting a pressing force for pressing the first vibrator and the second vibrator against the press-fit component by the vibrator pressing means. Item 3. The press-fitting device according to item 1 or 2 . The press-fitting device according to any one of claims 1 to 3 , wherein the vibration unit includes a vibration frequency changing unit capable of changing a vibration frequency of ultrasonic vibration in a range of 20 kilohertz to 100 kilohertz. In the press-fitting method for press-fitting the press-fitting part into the press-fitted part formed with the press-fitting hole held by the holding means by the pressing means,
A first vibration generating means and a first vibrator that is provided in the first vibration generating means and vibrates by ultrasonic vibration generated by the first vibration generating means;
A second vibration generating means and a second vibrator that is provided in the second vibration generating means and vibrates by ultrasonic vibration generated by the second vibration generating means;
By moving at least one of the first vibration generating means having the first vibrator and the second vibration generating means having the second vibrator arranged to face each other with the press-fitted part interposed therebetween. Vibrator pressing means for sandwiching the press-fit component between the first vibrator and the second vibrator and pressing the first vibrator and the second vibrator against the press-fit component; Have
The pressed member is sandwiched between the first vibrator and the second vibrator by the vibrator pressing means, and the first vibrator and the second vibrator are pressed against the pressed part. In addition, ultrasonic vibration in a direction orthogonal to the press-fitting direction is added to the press-fit component by the first vibration generating means having the first vibrator and the second vibration generating means having the second vibrator . A press-fitting method, wherein the press-fitting part is press-fitted into the press-fitted part in a state.

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