JPS58163262A - Linear pulse motor - Google Patents

Abstract

PURPOSE:To simplify the construction of the titled motor by a method wherein a rod is constituted by fitting and fixing two kinds of equidiametered rings, consisting of a soft magnetic and a non-magnetic materials, on the core metal made of a soft magnetic material. CONSTITUTION:The rod 41 to be used for the linear pulse motor is fixed to the core metal 42, consisting of the material having a high permeability, in such a manner that the ring 43 made of material having a high permeability and the ring 44 consisting of a non-magnetic material, are alternately inserted. According to the above constitution, the rod 41 wherein a cylindrical body having a built- in exciting coil is combinedly used as a guide shaft, thereby enabling to simplify the construction of the title motor.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention Honsuke 98 has a structure of a linear pulse motor, V<cylindrical linear pulse motor.

(b) Background of the Technology Linear pulse motors, in which a moving element moves stepwise in a linear direction in response to a pulse signal, are roughly divided into two types in terms of structure: flat type and cylindrical type. A generally widely used flat linear pulse motor has a flat stator 1 as shown in Fig. 1.
The rectangular slider 2 is configured to move over the magnetic force, or as shown in Figure 2, the rectangular slider 5 is moved between the pair of flat stators 3 and 40 by the magnetic force. However, the stator Is 3+ 4 made of a soft magnetic material is formed with key-shaped protrusions (magnetic poles 6 to 8) with a partial pitch, and the sliders 2 and 5 made of a soft magnetic material are formed with the same pitch as the above pitch. A plurality of (four in the figure) O1a stones 13 or 14 each including a pair of protrusions 9 and 121 or 11 and 121 are integrated.

In addition, in FIGS. 1 and 2, the slider 2 or 5 is provided with a guide for linear movement along the stators 1 or 3 and 4, and a slider support mechanism when stopped, not shown. , the cylindrical linear pulse motor is shown in figure j83 ((), ←)
As shown in (rod-shaped stator 21 and cylindrical slider 22 (
or a rod-shaped slider 21 and a cylindrical stator 22), the stator 21 made of a soft magnetic material is formed with screw-shaped or flange-shaped protrusions (magnetic poles) 23 at a partial pitch, and the shaft of the stator 21 A plurality of (four in the figure) slider kites $24 are formed parallel to the center. multiple pieces (eight pieces in the figure) that rotate along the guide groove 24.
The slider 22 is equipped with rollers 25 shown in FIGS. 1 and 2.
As shown in the figure, a plurality of xi stones such as 'fC' are built-in. It is troublesome to make the unit and the slider guide into a unit, the structure becomes large and it is difficult to reduce the weight, and there are disadvantages that it is difficult to use in terminal devices of various electronic devices (for example, printing hand carriers of printers), etc. there were. On the other hand, while the overall configuration of a cylindrical linear pulse motor can be made into a unit and can be made smaller, the slider is configured to move linearly along grooves formed in the stator. There is a drawback that it is difficult to ensure high accuracy due to differences in the machining slope of the guide groove of the book and assembly errors in attaching the plurality of guide rollers to the slider.

OBJECT OF THE INVENTION An object of the present invention is to provide a cylindrical linear pulse motor that eliminates the above drawbacks.

(e) Structure of the Invention The above object is to provide a rod having two types of equal diameter rings made of a soft magnetic material and a non-magnetic material with a core metal made of a soft magnetic material.

The present invention is achieved by a cylindrical linear pulse motor having one feature in which Kfik plugs are alternately inserted and fixed.

(j) Examples of the invention The present invention will be explained below with reference to the drawings.
〇-Perspective views of rods according to embodiments, FIGS. 5 to 7 are respectively constructed differently using the rods described above,
+7 showing an example What cross-sectional view of a near pulse motor, #c8 diagram showing a part of a rod according to another embodiment of the present invention @-
They are a top view (A) and its I-I' sectional view.

In Figure Wk4, the linear pulse motor rod 41 has a core made of a high magnetic permeability material (for example, Fi silicon steel).
2, a ring made of a high magnetic permeability material (11 poles 43 and a non-magnetic material (for example, martempuit stainless steel) K
The rings 44 are alternately inserted and fixed (for example, bonded). However, the rings 43 and 44 are formed, for example, from a plate material by press processing, and after being fitted and fixed to the core metal 42, the outer periphery is cut to make the outer diameter of the opening 41 a predetermined size, and a smooth surface is formed. It has been finished.

In FIG. 5, a permanent magnet type (PM type J linear pulse motor 51) is composed of a rod 41 and a hollow body 52 having a through hole in the center. Annular iron cores 54 and 55 with a letter-shaped cross section, wJ coils 56 and 57 fitted in the iron cores 54 and 55, respectively, an annular permanent magnet 58, and a linear ball bearing 5.
9 and 0 made of insulating material push nose 60 etc. However, iron core 5
The electromagnet of the wire 1 consisting of the iron core 55 and the coil 56 faces the electromagnet of the rattan 2 with the permanent magnet 5B in between, and the protrusion 61 of one of the iron cores 54 faces the magnetic ring 43. However, the other protrusion 62 is attached to the non-magnetic ring 44
When facing the protrusions 11i63 and 64 of the iron core 55, the other magnetic rings 43 and nonmagnetic rings 44fcli respectively
A linear ball bearing 59, in which the rod 41 is slidably fitted, is mounted in the center hole of the permanent magnet 58 via a pusher 60.

Therefore, when the coils 5'6 and 57 are energized alternately and switched between forward and reverse, the cylindrical body 53 is turned on one ring 43 and one ring 4
The cylindrical body 530 moves along the rod 41 by 1/4 of the pitch consisting of A roller (not shown) in contact with the rail is connected to the cylindrical body 5.
It is realized by attaching it to 3. 6th - It is composed of a KIJ lactance type (VR type) linear pulse motor 65Fi rod 41 and a cylindrical body 66, and the cylindrical body 66 is made of high magnetic permeability material. 6
7, four excitation coils 68 to 71, a linear ball bearing 72, an insulating material Pushiev 3, etc. However, the transparent body 67 has four IkIK protrusions 74 to 81 on both sides.
, and between protrusions 75 and 76 and between protrusions 79 and 80
Magnetic path breakers #82 and 83 are formed between the rod 4 and the coils 68 to 71 are fitted between the protrusion 74 and '15.76, 77.78 and 79°80 and 81, respectively.
A linear ball bearing 72 into which 1 is slidably fitted is attached to the center of the housing 67 via a pusher 73. When the protrusions 74 and 75 face different magnetic rings 43, the protrusions 78 and 79 face different nonmagnetic rings 44, and the protrusions 76 and 7
7, 80 and 81 are the other magnetic ring 43 to non-magnetic ring 44 and non-magnetic ring 44 to magnetic ring 4, respectively.
They are arranged to face each other astride 3.

Therefore, the coils 68 to 71 are energized, for example, coil 68, coil 68 and 69 . Coil 69. Coils 69 and 70.
Coil 70. Coils 70 and 71. coil 71, coil 7
When the energization is repeated in the order of steps 1 and 68, the cylindrical body 66 moves along the rod 41 one by one by 1/8 of the pitch formed by the rings 43 and 44. The rotation of the cylindrical body 66 is prevented by the same means as described for the cylindrical body 53 in FIG.

In Fig. 1s7, a VR type linear pulse motor 85 is composed of a rod 41 and a cylindrical body 86, and the cylindrical body 86, which functions in the same way as the cylindrical body 66 shown in Fig. 6, is made of a high magnetic permeability material. The housing 87 and four excitation coils (88 to 91 and 2)
There are two linear ball bearings 92 and 93. And, while the cylindrical body 66#''t has linear ball bearings installed in its center, the cylindrical body 86F
i. It is equipped with linear ball bearings 92 and 934 at both ends, so it can be moved very stably.

In FIG. 8, a linear pulse motor rod 41' is connected to the rod 41 shown in FIG.
It is formed using a 1174Yt cutting means, and the depth of $94 cuts at least rings 43 and 44, and is deepened to a degree of PJi that is permissible in terms of strength.

As a result, using the rod 41', 7F is shown in FIGS. 5 to 7.
, when the cylindrical body 53) is linearly moved without rotating, the excitation coils (for example, coils 5b and 57) are energized and the rod 41
Since the eddy current generated at ' is blocked by the constraint 94, the magnetic efficiency is reduced.

(1) Effects of the Invention As explained above, according to the present invention, the rod (stator) into which the cylindrical body (slider) is slidably fitted inside the excitation coil tube also serves as the guide shaft of the cylindrical body and serves as a guide shaft for the motor. The structure is simplified and the structure is simple. Since the l force is generated on a concentric circle coaxial with the rod, the force applied to the rod and the cylindrical body rotation prevention mechanism is small, so the internal tension f of the machine of the structure can be reduced, and the above is related to the generation of the thrust force. The bundle has advantages such as very little leakage from the tube and high efficiency.

[Brief explanation of drawings]

Figure 1 is a perspective view showing the differential ratio configuration of a flat linear pulse motor in which the stator and slider face each other in a 1:1 ratio, and Figure 2 is a perspective view of a flat linear pulse motor in which the stator and slider face each other in a 2 to 1 ratio. FIG. 4 is a side view showing the configuration of the structure; FIG. ~ Figure 7 is a side sectional view of an IJ near-pulse motor showing nine embodiments of the present invention using the rods described above, and Figure 8g is a side sectional view of another embodiment of the present invention. 21. 41. 41' is a rod
゛ ゛ (stator), 22, 53, 66. 86 is a cylindrical body (slider), 42 is a metal core, 43 is a magnetic ring, 51
．． 65.85 is a cylindrical linear pulse motor, and 94 is a rod formed on the rod. Fig. 1 2 Section 3” Fig. 4 L Fig. 5 I Fig. 6 5

Claims (1)

[Scope of Claims] ill A '@-shaped body in which a coil is housed by a rod tcH, or a front part along a through hole of the cylindrical body.
In a linear pulse motor in which the throat moves step by step in a straight line, two equal-diameter rings made of a soft cicada piece and a non-ferrous piece are alternately inserted into a core metal made of a soft magnetic material.・Linear pulse motors with fixed values. The linear pulse motor as set forth in claim (1) above, wherein the wound rond is formed by cutting at least a part of the front pilling to form a meticulously contoured groove.