JP2002147409A - Oscillating actuator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oscillating actuator provided at a comparatively low cost by not requiring a very high precision level in machining accuracy and assembly accuracy of parts and causing practically no oil leakages of a working medium such as oil inside and outside an apparatus. SOLUTION: A roller 9 inserted in a circular operation chamber 3 provided in a main body 1 is pressed by feeding the working medium to an operation hose 4 arranged in the operation chamber 3 and fixed by a stopper 6 and expanding it. By this, an oscillating motion is outputted by an oscillating disk 11 fixed to the roller 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oscillating actuator, and more particularly, to an oscillating output which is incorporated in a machine tool or various manufacturing / processing equipment and outputs an oscillating output, i. It relates to a dynamic actuator.

[0002]

2. Description of the Related Art As an oscillating actuator, one shown in FIGS. 4 and 5 is known (for example, see Japanese Patent Publication No. 58-33405). This means that a rotor 33 having an airfoil vane 32 is axially supported in a cylindrical cylinder 31, and an operating shaft is alternately turned from oil ports 35 and 36 arranged on both sides of a stopper 34 fixed to the inner surface of the cylinder 31. By moving the rotor in and out, the rotor 33 is driven to rotate forward and reverse through the vane 32 and output from the rotor shaft.

In the case of this conventional oscillating actuator,
It is of a sealless type, which does not use a sealing material for preventing leakage of the operating shaft supplied into the cylinder 31 (the troublesome replacement of the sealing material due to wear is avoided). In order to realize this sealless type, a gap is kept between the rotor and the inner surface of the cylinder to such an extent that oil leak which does not hinder the operation is generated.

[0004]

In order to realize the above-mentioned gap maintenance, a high degree of machining accuracy and assembling accuracy of each part is required. However, the operation requires skill and is expensive. I have no choice. In addition, although it does not hinder operation, it is not possible to avoid occurrence of some oil leaks.

Accordingly, the present invention does not have such a problem, that is, it does not require a high degree of precision in machining and assembling precision of parts, so that it can be supplied at a relatively low cost. An object of the present invention is to provide an oscillating actuator that hardly leaks oil from a working medium such as oil.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a roller inserted in a circular working chamber provided in a main body is provided in the working chamber, and a working medium is supplied to a working hose fixed by a stopper to expand the working medium. The above object has been solved by an oscillating actuator which is capable of being pressed by an oscillating plate, thereby enabling the output of an oscillating motion from an oscillating plate fixed to the roller.

More specifically, the present invention provides a double-cylindrical main body having a hollow cylinder at the center thereof, wherein the outer peripheral portion of the hollow cylinder is a circular working chamber having one open side, and an operating hose is provided in the working chamber. And a part thereof is squeezed by a stopper and fixed to the inner peripheral surface of the main body, and a pair of entrance / exit ports are installed through both sides of the main body by being positioned on both sides of the stopper. A roller which freely rotates between the hollow cylinder and the operation hose is inserted so as to face the inside of the operation hose, and one end of a roller shaft of the roller is rotatably supported by the main body and the operation chamber is provided. The other end is movable along an arcuate guide formed on the inner surface of the working chamber, and the other end of the working medium from the access port is inserted into the working hose. Before entering and leaving By roller moves along the arcuate guide, oscillating motor, characterized in that the enabling output via the rocking plate is.

[0008]

Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a front longitudinal sectional view of an oscillating actuator according to the present invention, and FIG. 2 is a side longitudinal sectional view thereof.
In the figure, reference numeral 1 denotes a main body. The main body 1 is a double cylinder having a hollow cylinder 2 at the center, and a circular working chamber 3 is formed so as to surround the hollow cylinder 2.

An endless working hose 4 is inserted into the working chamber 3. The working hose 4 is fixed to the inner surface of the working chamber 3 in a crushed state by a stopper 6 fitted into the working chamber 3 and fixed to the inner surface of the working chamber 3 by a bolt 5.
Both side surfaces of the stopper 6 are concave curved surfaces corresponding to curved surfaces of rollers described later.

Reference numerals 7 and 8 denote working medium inlet / outlet ports provided with the fixed portion of the working hose 4 interposed therebetween. The inner ends of the access ports 7 and 8 face the inside of the working hose 4, respectively, to supply working medium into the working hose 4 and to collect working medium from inside the working hose 4. As the working medium, air, water, oil, or the like can be used.

In normal operation, the input / output ports 7 and 8 operate in the opposite directions. That is, when the input / output port 7 performs the input operation, the input / output port 8 performs the output operation, and when the input / output port 7 performs the output operation, the input / output port 8 performs the input operation. Further, the intermediate rotation position may be held by causing the entrance / exit ports 7 and 8 to perform the entrance operation.

Reference numeral 9 denotes a roller provided in the working chamber 3.
It rotates on the roller shaft 10. Roller shaft 10
Is fixed to an annular rocking plate 11 and a bearing 12 is attached to the other end. The bearing 12 is fitted to an annular guide 13 formed on the inner surface of the working chamber 3.

The swinging board 11 is fitted on one side of the main body 1 via a bearing such as a cross roller bearing 14. The oscillating plate 11 is an output unit. For example, when an output shaft is fixed to a central opening of the oscillating plate 11, the oscillating motion described later is output via the output shaft. Reference numeral 15 denotes a holding lid for the cross roller bearing 14.

In the above configuration, when one of the entry / exit ports 8 performs the entering operation and the working medium is supplied into the working hose 4 therefrom, the crushed working hose 4 expands. As the working hose 4 expands in this manner, the pressure of the expansion is applied to the peripheral surface of the roller 9 which has been in contact with one side surface of the stopper 6, and the roller 9 is pushed.

One end of a roller shaft 10 of the roller 9 is fixed to a rocking plate 11 rotatably supported by a cross roller bearing 14, and a bearing 12 housed in an annular guide 13 is attached to the other end. Therefore, while spinning,
It revolves around the hollow cylinder 2 along the annular guide 13. The roller 9 revolves until it hits the opposite side surface of the stopper 6 (see the phantom line in FIG. 1) and stops. This roller 9
The orbiting plate 11 fixed thereto rotates positively by a predetermined angle (e.g., 270 degrees) along with the orbital motion of. At this time, the working medium filled in the working hose 4 in front of the roller 9 on the traveling side is discharged from the other inlet / outlet port 7.

Next, when the flow of the working medium in the inlet / outlet port 7 and the inlet / outlet port 8 is switched, the roller 9 revolves in the opposite direction by the same operation as described above. The movement of the roller 9 causes the swinging plate 11 to swing at a predetermined angle and output a swinging output.

The swing angle is determined by stoppers 6 of different sizes.
Can be changed by using The swing angle can also be changed by dividing the stopper 6 into two parts (see FIG. 1) and changing the mounting position of the two to widen or pinch the space therebetween. In this case, the main body 1 is usually provided with a plurality of bolt holes and access port openings in advance.

In the case where the swinging plate 11 is held at the swinging intermediate position, both the entrance and exit ports 7 and 8 may be set to the entering operation, and the roller 9 may be pressed from both sides.

To increase the output torque, the operating hose 4
May be increased or the number may be increased. FIG.
Shows a case where the number of the working hoses 4 is two as an example.

[0020]

As described above, the present invention is as described above. Since not so high precision is required for the machining accuracy and the assembling accuracy of parts, it is easy to assemble and can be supplied at a relatively low cost.
Further, there is an effect that there is almost no oil leakage of the working medium such as oil inside and outside the device.

[Brief description of the drawings]

FIG. 1 is a front vertical sectional view of an oscillating actuator according to the present invention.

FIG. 2 is a side longitudinal sectional view of a swing type actuator according to the present invention.

FIG. 3 is a side longitudinal sectional view of another embodiment of the oscillating actuator according to the present invention.

FIG. 4 is a front sectional view of a conventional swing type actuator.

FIG. 5 is a side sectional view of a conventional swing type actuator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Hollow cylinder 3 Working chamber 4 Working hose 5 Bolt 6 Stopper 7 In / out port 8 Out / in port 9 Roller 10 Roller shaft 11 Rocking board 12 Bearing 13 Ring guide 14 Cross roller bearing 15 Pressing lid

Continued on the front page. (72) Inventor Kazuya Okamoto 155-47 Matsune, Fujioka-cho, Nishikamo-gun, Aichi F-term (reference) 3H081 AA18 AA30 BB01 BB02 BB03 CC12 CC20 DD06 DD12 HH04

Claims (7)

[Claims] 1. A roller inserted into a circular working chamber provided in a main body is made pressurizable by supplying a working medium to a working hose arranged in the working chamber and fixed by a stopper and supplying a working medium to the working hose. An oscillating actuator that enables oscillating motion to be output from an oscillating plate fixed to rollers. 2. The oscillating actuator according to claim 1, wherein the main body has a double cylindrical shape provided with a hollow cylinder at the center, and the working chamber is provided on an outer peripheral portion of the hollow cylinder. 3. The swing type actuator according to claim 1, wherein the operation hose is endless. 4. The swing type actuator according to claim 1, wherein a plurality of the operation hoses are provided. 5. The oscillating actuator according to claim 1, wherein the working medium is air, water, or oil. 6. The oscillating actuator according to claim 1, wherein the stopper is divided into two parts, and the mounting positions of the two parts can be changed. 7. A double-cylindrical main body provided with a hollow cylinder at the center, an outer peripheral portion of the hollow cylinder is a circular working chamber having an open surface, and an operating hose is disposed in the working chamber. Is fixed to the inner peripheral surface of the main body by pressing with a stopper, and a pair of access ports are installed through the main body by being positioned on both sides of the stopper, and the exit ports respectively face the inside of the working hose. , A roller that freely rotates between the hollow cylinder and the working hose is inserted,
One end of a roller shaft of the roller is rotatably supported by the main body and fixed to a rocking plate that closes an open surface of the working chamber, and the other end is an arc-shaped guide formed on an inner surface of the working chamber. And the roller moves along the arc-shaped guide due to the movement of the working medium into and out of the working hose from the access port,
An oscillating-type actuator characterized in that output is possible via the oscillating plate.