JP3152480B2 - Multi-axis table - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-axis table, and more particularly to a novel improvement for rotating a table provided on a sphere operated by magnetic action with a stator in a multi-axis state.

[0002]

2. Description of the Related Art Conventionally, there are various types of rotary table devices of this kind, and generally, an index table device is employed. Although the document name indicating the index table device is not given here, the rotation table is angled by a drive device including a single-axis motor and a gear device to achieve positioning of a work or the like on the rotation table. I was

[0003]

Since the conventional rotary table apparatus is configured as described above, there are the following problems. That is, since the driving device using the motor only rotates in one axis direction, it can perform only the angle setting of the rotary table by one axis rotation. Therefore, it has not been possible to tilt the rotary table after setting the angle.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and in particular, a multi-axis rotating table provided on a sphere operated by a magnetic action with a stator. It is intended to provide an axis table.

[0005]

A multi-axis table according to the present invention has a pair of first-axis stators provided on a housing, having first-axis windings, and disposed opposite to each other, and provided on the housing. A pair of second shaft stators, which are different from each other in a longitudinal direction orthogonal to each other and have a second shaft winding and are disposed opposite to each other, and a spherical receiving hole formed in the housing; And a sphere as a rotor facing the respective stators and made of a magnetic material, and a table provided on the sphere.

More specifically, air is forcibly supplied into the spherical receiving hole.

More specifically, the inner surface of each of the stators facing the sphere is bent along the outer surface of the sphere.

[0008]

In the multi-axis table according to the present invention, the sphere having the table is operably provided in the housing having the stator. Therefore, by selectively applying a drive signal to each winding of each stator, the sphere is formed. The sphere can be rotated in a multiaxial state by the magnetic action of the shaft and the stator. Accordingly, the table can be rotated in a multi-axis state, and a multi-axis table position that cannot be obtained with the conventional one-axis rotary table can be freely obtained.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a multi-axis table according to the present invention will be described below in detail with reference to the drawings. 1 and 2
1 shows a multi-axis table according to the present invention. FIG. 1 is a sectional view, and FIG. 2 is an exploded perspective view of a main part.

In the figure, the reference numeral 1 designates a spherical receiving hole 2 which is substantially box-shaped as a whole and has a substantially spherical shape in the center thereof.
As shown in FIG. 2, a pair of first-axis stators 4 having first-axis windings 3 are arranged opposite to each other at a peripheral position of the housing 1. Further, a pair of second-axis stators 6 having second-axis windings 5 are disposed in the housing 1 so as to face each other at positions different in phase by 90 degrees from the first-axis stators 4. ,
These stators 4 and 6 are configured so that their longitudinal directions are different from each other at right angles.

The inner surfaces 4a and 6a of the stators 4 and 6 facing the sphere 7 are bent along the outer surface 7a of the sphere 7 operably provided in the sphere receiving hole 2 as a bearing hole. The spherical receiving hole 2 and the outer surface 7a form a spherical shape.

Each of the stators 4 and 6 is formed on a peripheral edge of the housing 1 and is provided in a holding hole 8 communicating with the sphere receiving hole 2.
Each of the windings 3 and 5 of 6 is located in a concave portion 8a formed continuously with each of the holding holes 8. Accordingly, the outer portions 4b, 6b of the stators 4, 6 are formed flush with the outer portion 1a of the housing 1, and the outer portions 4b, 6b constitute the outer surface shape of the housing 1.

A table 10 is integrally provided above the sphere 7 via a neck 9.
0 is normally held in the horizontal position.

The sphere 7 has the action of a rotor made of semi-hard magnetic steel so as to have the action of a hysteresis ring, and utilizes the phase difference between the magnetic flux density and the magnetic field strength with each of the stators 4 and 6. The ball 7 and the stators 4 and 6 constitute a well-known hysteresis motor.

Next, the case where the table 10 is actually rotated in a multi-axial manner in the above-described configuration will be described. First, a drive signal is applied to each first-axis winding 3 of each first-axis stator 4. As a result, the spherical body 7 can be rotated in the direction of the arrow θ.
By applying a drive signal to the shaft winding 5, the sphere 7 can be rotated and tilted in the direction indicated by the arrow ψ, and the table 10 can be rotated while being tilted. In the above-described embodiment, the case where the hysteresis motor is constituted by the sphere 7 as the rotor and the respective stators 4 and 6 has been described. it can. The angle detector required for the hysteresis motor is not shown, and when air is supplied between the sphere receiving hole 2 and the sphere 7, friction during rotation of the sphere 7 can be reduced.

[0016]

Since the multi-axis table according to the present invention is constructed as described above, the following effects can be obtained. That is, since the sphere having the table is operated by rotating in a multi-axial direction by using a magnetic action, the rotation of the table can be achieved in the multi-axial direction. A multi-axis table can be easily obtained without using it.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a multi-axis table according to the present invention.

FIG. 2 is an exploded perspective view showing a main part of FIG.

[Description of Signs] 1 Housing 2 Sphere receiving hole 3 First axis winding 4 First axis stator 5 Second axis winding 6 Second axis stator 7 Sphere 10 Table

Claims (3)

(57) [Claims] A first shaft winding provided in a housing (1).
A pair of first shaft stators (4) having (3) and arranged opposite to each other, and the first shaft stator (4) provided in the housing (1) are different in longitudinal direction orthogonal to each other. A pair of second-axis stators (6) having a second-axis winding (5) and facing each other, and the housing
Each of the stators provided in the sphere receiving hole (2) formed in (1)
A sphere (7) as a rotor which is opposed to (4, 6) and is made of a magnetic material, and a table (1) provided above the sphere (7)
0), and a driving signal is applied to each of the windings (3, 5) to thereby produce the first and second shaft stators (4, 6) and the spherical body.
A multi-axis table, wherein the sphere (7) is operated via a magnetic action with the sphere (7), and the table (10) is operated in multi-axial directions via the sphere (7). 2. The multi-axis table according to claim 1, wherein air is forcibly supplied into said spherical receiving hole. 3. An inner surface (4a, 6a) of each of the stators (4, 6) facing the sphere (7) is bent along an outer surface (7a) of the sphere (7). The multi-axis table according to claim 1 or 2, wherein: