JPS5825882B2 - Manufacturing method of rotor in oscillating actuator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a rotor fitted in a cylinder and having vanes fixed between flanges is hydraulically driven to rotate in the opposite direction, and the rotation angle is set between the flanges that the vanes are in contact with. The present invention relates to a method for manufacturing a rotor in a sealless type swinging actuator that is controlled by a stopper provided therein.

In this type of actuator, it is necessary to keep the gap between the cylinder wall and the rotor to a minimum to the extent that oil leakage does not occur due to the viscosity of the oil without attaching seals to the vanes.

Of course, the two should never come into contact.

Therefore, dimensional accuracy and assembly accuracy of each component are required to be precise in microns.

It is an object of the present invention to provide a method for manufacturing a rotor in a swing type actuator that is unprecedented in the art and satisfies such requirements.

A method for manufacturing a rotor in a swing type actuator according to the present invention is to grind a cylindrical body leaving flanges with the same diameter or almost the same diameter as the cylinder on the left and right sides of the cylindrical body.
A fitting body with a smaller diameter than the flange is left and further ground to form the rotor shaft, and a part of the cylinder with the same inner diameter as the rotor shaft is cut out to form a vane, and the vane is placed between the flange. It is characterized by being fitted and fixed to.

When fitting and fixing the vane between the flanges,
A preferred method is to make the outer diameter of the vane slightly larger than the flange, fit and fix the vane between the flanges, and then grind the vane so that the diameters of the vane and flange are the same.

To explain the present invention with reference to the drawings, 1 is a cylindrical body;
Flanges 2, 2 with the same diameter or almost the same diameter as the cylinder on the left and right sides
Grind it leaving behind.

Then, the rotor shaft 4 is formed by further grinding, leaving a fitting body 3° 3 having a smaller diameter than the 7 flange on the outside of the flanges 2, 2.

A radial bearing is fitted into the fitting bodies 3, 3 as described later.

5 is a cylinder, a part of which is cut out to form a vane 6 (see Fig. 2).

The inner diameter of the cylinder 5 is the rotor shaft 4 between the flanges 2, 2.
The outer diameter may be the same as the diameter of the flanges 2, 2, but in the sense that the vane 6 and the flanges 2, 2 can be made completely the same diameter by the processing method described below, the outer diameter should be smaller than the flange diameter. It is preferable that

That is, in that case, if the vane 6 is fixed between the seven flanges 2, 2, the vane 6 will protrude by that amount, and by grinding it, the vane 6 and the flanges 2, 2 can be made to have the same diameter.

It is desirable to have bolt holes 6a in the vane 6 for fixing between the flanges 2, 2, and to provide a notch in the hydraulic port abutting portion to ensure that hydraulic pressure is applied.

This vane 6 is fixed between the flanges 2 and 2 to form a rotor.

3 and 4 show a swing type actuator incorporating this rotor.

There, 7 is a cylinder, 8.9 is an end cover that closes both ends of the cylinder 7, and 10 is a bolt that fixes the end covers 8 and 9 to the cylinder.

11 is a radial bearing which is driven from both ends of the cylinder 7 and fitted into the rotor fitting body 3 to support the rotor;
The gap between the rotor and the cylinder wall, that is, between the flanges 2, 2 and the cylinder wall, is usually maintained at about 8 microns.

Reference numeral 12 denotes a stopper interposed between the flanges 2, and a hole 14 into which a stopper core metal 13 for regulating movement is fitted is made sufficiently wide so that the stopper 12 is free in the radial direction and the thrust direction.

Reference numerals 15 and 16 are hydraulic ports, each of which repeats the input and output of hydraulic pressure.

To explain the operation of the swing type actuator, when hydraulic pressure is simultaneously supplied from the hydraulic ports 15 and 16', oil flows between the upper stopper 12 and the vane 6, and between the lower stopper 12 and the vane 6'. Cut it in half and enter.

As a result, the vane 6 separates from the upper stopper 12,
Also, the bays 76' separate from the lower stopper 12 and rotate counterclockwise in FIG. 4 to drive the rotor shaft 4.

Accordingly, the oil filled between the vane 6 and the lower stopper 12 is transferred from the hydraulic port 15', and the oil filled between the vane 6' and the upper stopper 12 is transferred from the hydraulic port 16. Each is pushed out.

Then, the rotor shaft 4 rotates until the vane 6 abuts the lower stopper 12 and the vane 6' abuts the upper stopper 12, and after the rotation stops, hydraulic pressure is supplied from the hydraulic ports 15' and 16. Flip clockwise,
After that, repeat the counterclockwise rotation.

As described above, the present invention not only makes it easy to manufacture the rotor, but also has the effect of achieving satisfactory dimensional accuracy, right angle dust, etc. of each component in actuators that require precision in microns. be.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the manufacturing process of a rotor, FIG. 2 is a diagram showing a vane manufacturing method, and FIG. 3 is a diagram showing the configuration of a swing-type actuator incorporating a rotor manufactured by the method according to the present invention. FIG. 4 is a sectional view taken along the line A-A in FIG. 3 (however, the cut portion has been supplemented).

Claims (1)

[Claims] 1. A cylindrical body is ground, leaving seven flanges of the same diameter or almost the same diameter as the cylinder on the left and right sides, and a fitting body with a smaller diameter than the flange is left on the outside of the flange, which is further ground to form a rotor. A rotor in an oscillating actuator, characterized in that a shaft is formed and a vane is formed by cutting out a part of a cylinder having the same inner diameter as the rotor shaft, and the vane is fitted and fixed between flanges. manufacturing method. 2. The rocker according to claim 1, wherein the outer diameter of the vane is slightly larger than that of the flange, and the vane is fitted and fixed between the flanges and then ground to make the diameters of the vane and the flange the same. A method for manufacturing a rotor in a dynamic actuator.