JPS59165949A - Pulse motor - Google Patents

Abstract

PURPOSE:To obtain rectilinear and rotary motions by providing axial and circumferential pole pieces on the outer periphery of a cylinder to form a rotor, and providing pole pieces in axial and circumferential directions to form a stator. CONSTITUTION:Pole pieces 2, 3 and 4, 5 are formed in axial and circumferential directions on the cylindrical outer peripheral surface of a rotor 1, and pole pieces 7a, 7b and 8, 9 are formed in axial and circumferential directions on the cylindrical inner peripheral surface of a stator 6. In case that exciting coils 11a, 11b are energized simultaneously when the energization of exciting coils 10a, 10b is stopped, the rotor 1 moves rectilinearly. In case that the coils 10c, 10c are energized simultaneously when the energization of the coils 10a, 10b is stopped, the rotor 1 rotates.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a pulse motor.

Conventional configuration and its problems Conventionally, pulse motors have only a single driving function, which is rotating force and linear motion.
To perform both rotational and linear motion, a pulse motor for rotational motion and a linear pulse motor for linear motion are required, so the device is complicated and large (and also has a high f/τ). [It had the disadvantage of becoming a pragmatic case.

Purpose of the Invention In view of the above-mentioned drawbacks, the present invention provides a pulse motor that can perform both rotational and linear motion by itself, has a simple configuration, is small in size, and is inexpensive. A movable element having magnetic pole pieces disposed on its surface at predetermined pitches in the axial and circumferential directions, and a movable element arranged coaxially with the movable element and arranged in the axial and circumferential directions on the inner circumferential surface of the cylinder. A stator with magnetic pole pieces arranged at a predetermined pitch,
It consists of an excitation coil that winds the magnetic pole piece of the stator, and a bearing that is fixed directly to the cylindrical end of the stator and supports the movable element so that it can move linearly and rotatably, and can move linearly by itself. It has the unique advantages of being able to perform both rotational and rotational movements, being simple in structure, small in size, and inexpensive.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described above with reference to the drawings.

FIG. 1 is a side sectional view of a pulse motor in an embodiment of the present invention, and FIG. 2 is a sectional view taken along arrows A- and A' in FIG.

In FIGS. 1 and 2, 1 is a movable element, 3, 4, and 5 are magnetic pole pieces provided in the axial and circumferential directions at the cylindrical outer peripheral opening of the movable element 1, and 6 is coaxial with the movable element 1. 7a, yb, a and 9 are magnetic pole pieces provided in the axial and circumferential directions on the cylindrical inner peripheral surface of the stator 6; 10a;
, 1”Ob, 10c.

10d, 11a, and 11b are excitation coils that wind the magnetic pole pieces, and 12 is a bearing that is fixed to both end faces of the stator 6 and supports the movable element so that it can move linearly and rotatably. About the general pulse motor configured.

The operation will be explained below.

First, the exciting coil 10a is in the state shown in FIG.

From the state where 10b is energized, the exciting coils 10a,
At the same time as stopping the energization of the excitation coils 11a, 10b,
When 11b is energized, the mover 1 moves straight in the direction of arrow B and stops at a position where the magnetic pole pieces γa, 7b, 2, and 3 are lined up in series.

Furthermore, by sequentially energizing and de-energizing each excitation coil as appropriate, it performs rectilinear reciprocating motion in the axial direction like a normal linear pulse smoke.

Next, the exciting coil 10a is in the state shown in FIG.

From the state where 10b is excited, the exciting coil 10a.

At the same time as the energization of 10 and b is stopped, the excitation coil 10c is turned off.

When 1Qd is energized, the mover 1 rotates in the direction of arrow C.
After stopping at the position where the magnetic pole pieces 4, 5, 8, and 9 are lined up in series, each excitation coil is sequentially energized and de-energized as appropriate, thereby performing a rotational motion similar to that of a normal pulse motor.

Further, the bearing 12 is pivotally supported on the inner circumferential surface of the movable element 1 so as to be rotatable and linearly movable relative to the outer circumferential surface of the movable element 1 .

Effects of the Invention As described above, the present invention includes a movable element having magnetic pole pieces in the axial and circumferential directions on the outer circumferential surface of a cylinder, and a movable element arranged coaxially with the movable element and provided with magnetic pole pieces in the axial and circumferential directions on the inner circumferential surface of the cylinder. a stator provided with magnetic pole pieces in the circumferential direction; an excitation coil that winds the magnetic pole pieces of the stator; and an excitation coil that is fixed to the cylindrical end surface of the stator and supports the movable element so that it can move linearly and rotatably. By providing a bearing, it is possible to perform both linear and rotational motion by itself, and therefore the structure is simple, compact, and inexpensive, and its practical effects are excellent.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a cruise motor according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line AA in FIG. 1-Mover, 2, 3, 4, 5, 7a, 7b. 8.9...Magnetic pole piece, 6...Stator, 10
a, 10b. 10C, 10d, 11a, 11b-=-・Excitation coil. 12...Bearing. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (1)

[Claims] Circle i≦) A movable element having magnetic pole pieces arranged at a predetermined pitch in the axial and circumferential directions on the outer circumferential surface, and two coaxial -4 pieces arranged on the surface facing the movable element, and inside the cylinder. A stator having magnetic pole pieces provided on its circumferential surface at predetermined pitches in the axial and circumferential directions, an excitation coil that winds the magnetic pole pieces of this stator, and a cylindrical end face of the stator (C fixed, and a bearing that supports the movable element linearly and rotatably on a +rC axis.