JPH0452404B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a four-axis vibration device that adds rolling vibration to vibrations in three orthogonal axes of X, Y, and Z.

(b) Prior art The conventional vibration device is a device that can only vibrate in the three orthogonal axes of X, Y, and Z. Therefore, it is difficult to apply vibrations such as a pendulum train, etc. to so-called seasickness caused by the vibration of the vehicle. This device was not sufficient to elucidate the effects on the human body, and therefore was not suitable for researching the vibrations of various parts of vehicles.

(c) Purpose The purpose of the present invention is to provide a four-axis vibrator that adds rolling vibration to orthogonal three-axis vibration, and which has a particularly high vibration response and a rolling vibrator with little lateral vibration. The aim is to realize the following.

(D) Structure The present invention comprises a vertical vibration part that provides vibration in the Z-axis direction, a horizontal vibration part that provides vibration in the X-axis direction, a horizontal vibration part that provides vibration in the Y-axis direction, and a rolling vibration part that provides rolling. The vibrating parts are stacked one after another, and the rolling vibrating part is configured to generate rolling vibration based on rolling pendulum vibration generated by an arcuate cam groove and a roller rolling on the cam groove. There is.

(e) Examples FIG. 1 is a side view of an embodiment according to the present invention.

The vertical vibration table 10 is placed in a state where it can vibrate vertically on the rail 2 along the guide 12,
The Z-axis drive cylinder 11 connects the lower surface of the vertical vibration table 10 and the pedestal 1 with a pin connection.

That is, the vertical vibration table 10, the Z-axis drive cylinder 11, the pedestal 1, the rail 2, and the guide 12 constitute a vertical vibration part.

On the other hand, 20 is a horizontal vibration table in the X-axis direction (perpendicular to the plane of the paper), which is located above the vertical vibration table 10, and which moves along the guide 22 on the rail 13 in the direction perpendicular to the plane of the paper. It is placed in a state where it can vibrate. Here, the main body of the X-axis driving cylinder 21 is fixed to the top surface 14 of the vertical vibration table 10, and the rod is connected to the bottom surface of the horizontal vibration table 20 with a pin.

That is, the horizontal vibration section includes the vertical vibration table 20, the X-axis drive cylinder 21, the rail 13, and the guide 22.

Furthermore, 30 is a horizontal vibration table in the Y direction (left and right direction on the page), and a guide 3 is mounted along the rail 23.
The lower surface of the horizontal vibration table 30 and the upper surface of the horizontal vibration table 20 are connected by a pin-coupled Y-axis drive cylinder 31. There is.

That is, another horizontal vibration part includes a horizontal vibration table 30, a Y-axis drive cylinder 31, a rail 23, and a guide 32.

Now, here, 40 is a rolling vibration excitation table which is a main component of the present invention.

This rolling vibration table 40 is the horizontal vibration table 3
It is located at the top of the four-axis vibration device of the present invention, so to speak, and the object to be vibrated is placed on this rolling vibration table and subjected to a predetermined vibration test. The Rukoto.

Reference numeral 41 is a drive cylinder for applying rolling in a plane including the Y-axis, and the upper surface of the horizontal vibration table 30 and the lower surface of the rolling vibration table 40 are connected to each other by a pin connection.

As shown in detail in FIG. 2, approximately in the center of each of the two vertical support plates supporting the rolling vibration excitation table 40 is an arc-shaped cam whose center is located a predetermined distance above the device. A groove 42 is provided.

On the other hand, two roller brackets 50 are fixed to opposite sides of the horizontal vibration table 30 so as to sandwich the table.

Furthermore, a pair of rollers 5 as shown are provided at the upper left end and the upper right end of the roller bracket 50.
1 and 52 protrude inwardly, and the rollers 51 and 52 are loosely fitted so that they can roll while being guided by the cam grooves 42 described above. Note that the roller 51 is in contact with the upper surface 43 of the cam groove 42,
Further, the roller 52 is in contact with the lower surface 44 of the cam groove 42.

Further, on the upper part of the roller bracket 50, a plurality of sets of presser rollers 53, 54, 55 and 56 are provided.
(The same presser roller is also provided on the back roller bracket (not shown)), and the presser roller is configured to roll while holding both sides of the roller bracket.

Therefore, the rolling vibration section includes the rolling vibration table 40, the roller bracket 50, and the roller 5.
1 and 52, press rollers 53 to 56, and a drive cylinder 41 that provides rolling vibration as its main parts.

The operation of the four-axis vibration device configured as described above will be explained below.

First, the object to be vibrated is placed on the rolling vibration excitation table 40.

Next, each of the drive cylinders described above is operated using hydraulic pressure.

Due to the operation of this drive cylinder, the rolling vibration table not only vibrates in the X, Y, and Z directions, but also vibrates in a so-called rolling pendulum around a predetermined point on the top of the device in a plane that includes the Y axis, i.e., rolling vibration. will be done.

In addition, although the drive cylinder was explained above as a hydraulic cylinder, it is not limited to this, and for example, an air cylinder may be used. Further, the means for driving the drive cylinder uses a servo valve controlled by a control device including a computer (not shown).
Sequence control may be performed based on a preset program.

(F) Effect The four-axis vibration excitation device according to the present invention has a configuration in which the rolling vibration excitation section is located at the top stage, so that the weight of the part that performs rolling vibration is minimized. In addition to improving the response, due to the strong pressure effect of the support plate 45 of the rolling vibration table of the presser roller, it is possible to realize an extremely rational four-axis vibration device that does not cause lateral vibration of the rolling vibration table. It is possible to accurately conduct experiments and understand the effects of rolling vibration on the human body.

[Brief explanation of the drawing]

FIG. 1 is a side view of an embodiment according to the present invention, and FIG. 2 is a detailed explanatory diagram of a rolling vibration excitation section. 10...Vertical vibration table, 20...Horizontal vibration table, 3
0...Horizontal vibration table, 40...Rolling vibration table.

Claims (1)

[Scope of Claims] 1. A vertical vibrating section that gives vibrations in the Z-axis direction, a horizontal vibrating section that is provided on a vibrating table of the vertical vibrating section and giving vibrations in the X-axis direction, and the horizontal vibrating section a horizontal vibration part that is provided on the vibration table and gives vibration in the Y-axis direction;
A four-axis vibration device comprising: a vibration table of the horizontal vibration unit that generates vibration in the Y-axis direction; and a rolling vibration unit that generates rolling in a plane including the Y-axis; Arc-shaped cam grooves having a center at a predetermined height above the vibration table are provided on both left and right sides of the vibration table, and two cam grooves are provided opposite to the vibration table of the horizontal vibration part in the Y-axis direction. roller brackets are arranged to sandwich the vibration table of the rolling vibration vibration part, a plurality of sets of rollers are provided on the upper part of the roller bracket, and the rollers are caused to roll while being guided by the cam grooves; and a plurality of sets of presser rollers are provided on the upper part of the roller bracket,
A four-axis vibration device characterized in that the pressing roller is configured to roll while holding both side surfaces of the roller bracket. 2. A patent characterized in that the plurality of sets of rollers are comprised of rollers that roll while contacting the ceiling surface of the cam groove and rollers that roll while contacting the bottom surface of the cam groove. A four-axis vibration device according to claim 1.