JP2002010589A - Motor substrate, method for verticalizing rotor shaft and motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotor substrate, a method for verticalizing rotor rotating shaft and a motor which can enhance verticality of the rotating shaft to a motor substrate and can minimize the size of the motor even when a part having the size accuracy to result in a large increase in the cost is not used. SOLUTION: The motor substrate 10 to which a body 30 of motor 1 is mounted includes a weak region Rw assuring plastic deformation around a center region Rc including the center portion E through which a rotation center shaft line C of a rotor rotating shaft 37 passes. The motor 1 is formed by mounting the motor body 30 to the motor substrate 10 and the verticality (inclination angle θ) of the rotor rotating shaft 37 for the reference surface S of the motor substrate 10 is detected and the rotor rotating shaft 37 is set vertical to the reference surface S by applying a force F to enhance the verticality in view of resulting in the plastic deformation of the weak region Rw.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to adjustment or correction of the inclination of a rotor rotation axis, and more particularly, to verticalization of a rotor rotation axis with respect to a reference plane of a motor board.

[0002]

2. Description of the Related Art For example, in an optical disk player or the like, if the rotation axis of the rotor is inclined, when the optical head or the optical pickup moves in the radial direction (of the disk) or the like, the optical pickup and the disk surface on the turntable are moved. The distance may fluctuate, making it difficult for the intended reading operation to be performed. On the other hand, since there is a limit in increasing the accuracy of related components such as a bearing holder and a bearing of the rotor rotating shaft without excessively increasing the manufacturing cost, it is inevitable that the rotor rotating shaft may be tilted to some extent. . Therefore, it is required to adjust the verticality or inclination of the rotor rotation axis of the assembled motor.
Japanese Patent Application Laid-Open No. 9805, Japanese Patent Application Laid-Open No. H10-162372, and Japanese Patent Application Laid-Open No. 2000-131054 propose a technique for adjusting or correcting the inclination of the rotor rotation axis to make the rotor rotation axis vertical.

More specifically, in these publications, a screw is provided between a support plate or bracket as a motor substrate on which a motor body is mounted and a fixed substrate or deck base integrated with a frame such as a player (deck). By providing a plurality of screws whose distance can be adjusted at the joint, adjusting the screwing length of the screws, adjusting the inclination angle between the support plate and the fixed substrate, and adjusting the inclination of the rotor rotation axis with respect to the fixed substrate. It is described. In addition, it is also proposed to provide a spring that works in a direction for separating the support plate and the fixed substrate at each screw.

[0004]

However, these techniques not only require a threaded structure capable of adjusting the position, but also increase the size of the motor. In addition, even though the spring force is acting, there is a possibility that the threaded position shifts and the tilting state of the rotating shaft changes during long-term use due to repeated vibration and impact. Although the example of the optical disk player has been described above, it is apparent that various troubles may occur in other devices using a motor if the rotation axis of the rotor is inclined. Would.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned points, and has as its object to reduce the rotation of the rotor rotating shaft with respect to the motor substrate even when components having high dimensional accuracy that cause a significant increase in cost are not used. An object of the present invention is to provide a motor substrate, a method of verticalizing a rotor rotation axis, a method of manufacturing a motor, and a motor, which can increase the degree of verticality and minimize the size of the motor.

[0006]

A motor board according to the present invention comprises:
In order to achieve the above-mentioned object, a motor substrate to which a motor body is attached has a weakened region that can be plastically deformed around a central region including a center position through which a rotation center axis of a rotor rotation shaft passes.

In the motor board of the present invention, since the weakened area that can be plastically deformed is formed around the central area including the center position through which the rotation center axis of the rotor rotating shaft passes, the motor body is mounted or assembled on the motor board. After the motor is formed, the inclination of the rotor rotation axis (ie, the deviation of the rotation center axis from the vertical direction with respect to the reference plane of the motor mounting board)
According to the direction of reducing the inclination, by applying an external force to the motor substrate to plastically deform the motor substrate at the weakened region, the inclination of the rotor rotation axis is reduced to a desired range,
The rotor rotation axis may be perpendicular to the reference plane of the motor board. Therefore, it is possible to assemble the motor as a motor without using various components of which the dimensional accuracy is increased so as to cause a significant increase in cost, and without increasing the mounting accuracy of the components so as to increase the cost. In this state, the inclination of the rotor rotation shaft finally generated can be reduced to a desired level or less by plastically deforming the weakened region of the motor substrate.

Further, in a motor using this motor board,
Since the effective thickness of the motor substrate only increases by the amount of the inclination due to the plastic deformation at the weakened region of the motor substrate, the thickness in the extending direction of the rotor rotating shaft hardly changes. Further, in the motor using the motor substrate, it is not necessary to provide a verticality adjusting mechanism in the motor itself, so that an increase in the size of the motor associated with increasing the verticality of the rotor rotation axis can be minimized.

In this specification, with respect to the rotor rotation axis, "perpendicular" means that the rotation center axis of the rotor rotation axis is perpendicular to the reference plane of the motor substrate, and "vertical degree" means the degree of perpendicularity. . In addition, regarding the rotor rotation axis,
The term “inclination” refers to a deviation of the rotation center axis from a direction perpendicular to the reference plane of the motor substrate. Therefore, a small inclination or a small inclination means the same thing as a high perpendicularity from the opposite side. Further, verticalization is synonymous with reducing the inclination or inclination. Therefore, in the following, either one or both expressions will be used as appropriate.

Here, the motor board supports a motor main body including a rotor rotating shaft, its bearing, a stator, and the like, and also includes a frame including a motor mounting base of another device for fixing the motor main body to another device. The thing fixed to. Therefore, the weakened portion may be thin enough to allow plastic deformation, but may not be thin in other portions, and may be typically plate-shaped, but may be block-shaped in some cases. In the case of a plate-like shape, it is typically a plate-like shape, but a reference plane (reference plane)
In some cases, a curved plate shape may be used as long as it can be ensured. The motor substrate is made of a plastically deformable material, typically a metal material such as steel such as stainless steel.

The weakened region is a region that is more easily plastically deformed than other surrounding regions so that the region is preferentially plastically deformed when subjected to an external force.

When the motor substrate is made of a uniform material, the weakened region may be at least partially thinned or have a through hole. When the material of the motor substrate is composed of a plurality of materials, the weakened region may be composed of a region containing a material that is easily plastically deformed.

The weakened area is typically circular or wide (circular) in width, but has other shapes as long as it is formed around a central area including the center position through which the rotation axis of the rotor rotation axis passes. May be. Although the weakened area itself effectively consists of a closed curve area, in appearance,
It is not necessary to form a continuous closed curve.

That is, the weakened region may include a plurality of weakened portions formed at intervals in a circumferential direction of a circle around the center position, or may include an annular weakened portion around the central region. Good.

In the former case, typically, the weakened portion is a hole (through hole) or a concave portion (bottomed hole) formed in the motor substrate.
Consists of The holes and the concave portions may be mixed. The holes or recesses are typically circular, but may have other shapes, such as elliptical in some cases. Also, to ensure uniformity of direction around the center position, it is typically preferable that the holes and recesses are typically the same. However, even if the uniformity of the direction is substantially realized when viewed in a region having a certain extent of the hole or the concave portion, depending on the case, the planar shape or the size or the depth within the plane (the concave portion) may be used. in the case of)
Concave portions and holes different from each other may be mixed.

In the latter case, the weakened portion comprises an annular groove or an annular body of a material having low mechanical strength. In addition, in the annular groove,
A material having lower mechanical strength than the material of the motor substrate may be embedded. In this specification, “small mechanical strength” means that the elastic limit at which plastic deformation occurs is small.

When the central region is configured to be reinforced by a part of the motor main body when attached to the motor main body, the portion inside the extension of the weakened region is made thinner than the external portion. May be.

As long as plastic deformation can occur preferentially in the weakened region, the mechanical strength of the weakened region can be maintained sufficiently high under normal conditions of use of the motor so that the mechanical strength of the motor substrate can be kept sufficiently high. Is high, that is, the degree of weakening of the weakened region is preferably small.

In the case where the rotor rotation axis is made vertical by using the motor substrate having the above-described weakened region, a motor is formed by attaching the motor body to the motor substrate, and the rotor rotation axis is perpendicular to the reference plane of the motor substrate. The degree is detected. For example, when the vertical degree is lower than a predetermined level, the weakened area is plastically deformed so as to increase the vertical degree.

In order to cause plastic deformation of the weakened region, a pressing force, a tensile force, or a bending force may be applied. For plastic deformation of the weakened area, for example,
Although a pressing force may be applied to each of a plurality of locations apart from each other in the weakened area, typically, the angle formed by the rotor rotation axis with respect to the reference plane within the weakened area of the motor substrate is the smallest. The weakened area is plastically deformed by applying a pressing force to the direction part (that is, the part located in the maximum inclination direction), or the direction in which the rotor rotation axis is most deviated from the vertical direction within the weakened area of the motor substrate. A bending stress is applied to the weakened portion located (that is, the portion located at both ends in the diameter direction in the maximum inclination direction) to plastically deform the weakened region.

In order to cause such plastic deformation, a deformation force may be applied as necessary, taking into account the springback of the portion including the portion to be plastically deformed. Note that the plastic deformation of a predetermined size may be generated by a single deformation process or a plurality of deformation processes. In the latter case, the degree of verticalization (ie the degree of tilt)
May be performed as needed or continuously.

When a motor is manufactured, the motor body is mounted on a motor board, and then the rotor rotation axis is made vertical as described above, thereby manufacturing a motor in which the inclination of the rotor rotation axis is minimized.

The motor manufactured in this manner is incorporated or used in other devices depending on a wide variety of applications as is well known. For example, as shown in the embodiments described below, a motor that requires a reduction in thickness, a motor in which a rotor rotating shaft is supported in a cantilever manner by a bearing holder via a bearing, and a disk, For a motor that rotates a relatively large radius without tilt or a motor that is used in connection with an optical system such as an optical pickup, the verticalization of the rotor rotation axis by the above-described means is particularly effective. Is beneficial.
However, it will be apparent that in any other application, increasing the perpendicularity of the rotor rotation axis with respect to the reference plane of the motor board may promote effective use of the motor's rotational output.

Although it is preferable that the motor substrate is formed with a weakened portion itself, in a state where the motor substrate is mounted on the motor body, a portion of the motor substrate related to the bearing of the rotor rotating shaft (for example, a bearing or a bearing). Bearing holder)
The inner surface is spaced apart from the motor body between the central portion supported by the motor and the peripheral portion supported by another motor component (for example, a support frame portion of the stator), and the mechanical strength is substantially lower than the central portion and the peripheral portion. In some cases, an annular intermediate portion is formed. In such a case, it is preferable to form the above-described weakened portion in the annular intermediate portion of the motor substrate itself, but instead of forming the weakened portion, it is effective in a state where it is assembled to the motor body. The rotational axis may be made vertical by utilizing the weakened intermediate portion to cause plastic deformation in the intermediate portion.

That is, in a broad sense, the method for verticalizing the rotor rotating shaft of the present invention includes a motor body and a motor board supporting the motor body, and the motor board is supported by a bearing-related portion of the rotor rotating shaft. A motor in which an inner surface is separated from a motor main body portion between a central portion and a peripheral portion supported by another motor component, and a substantially annular intermediate portion having mechanical strength smaller than that of the central portion and the peripheral portion is formed. Alternatively, the rotation center axis of the rotor rotation shaft may be made perpendicular to the reference plane of the motor substrate by plastically deforming the annular intermediate portion of the motor substrate.

Focusing on the motor, a motor having this feature has, in a broad sense, a motor main body and a motor substrate supporting the motor main body, and the motor substrate is supported by a bearing holder for a rotor rotating shaft. Motor having an inner surface spaced apart from the motor body between a central portion to be supported and a peripheral portion supported by another motor component, and having a substantially annular intermediate portion having lower mechanical strength than the central portion and the peripheral portion. And
An annular intermediate portion of the motor substrate is plastically deformed, and a rotation center axis of the rotor rotation shaft is perpendicular to a reference surface of the motor substrate.

The detection and correction or adjustment of the inclination of the rotor rotation axis as described above, that is, the verticalization of the rotor rotation axis may be performed manually or mechanically. In this case, the inclination of the rotor rotation axis is detected by, for example, perpendicularly attaching a dummy disk having a reflection surface to the rotor rotation axis (in the case of a motor application in which a turntable is mounted on the rotor rotation axis, the rotation of the dummy disk) It can be performed by measuring the distance to the reflection surface of the dummy disk at three or more points in the circumferential direction of the peripheral edge of the dummy disk. Of course, in accordance with the inclination of the rotor rotation axis, the part fixed to the rotation axis will be similarly inclined, so that any other means capable of detecting the inclination of a desired part of the rotation axis is used. Should be detected.

After detecting the inclination, in the direction in which the inclination is maximum, the pressing force is applied to the weakened area of the motor substrate by a pin or a rod inside the weakened area, for example, in order to plastically deform the weakened area of the motor board so as to reduce the tilt. Multiply. This pressing force can be applied, for example, by pressing or striking the motor substrate with a pin driven by a cylinder device. Of course, any energy source or pressurization source can be used instead of the cylinder device. Instead of pressing with a pin or the like, a bending force or torque such as a couple may be directly applied to the weakened region.

In any case, the rotor rotation axis verticalizing device includes a tilt detection means for detecting a tilt of the rotor rotation axis with respect to a direction perpendicular to the reference plane of the motor substrate, and a direction of the tilt detected by the detection means. And a force for plastically deforming an intermediate portion located between the central portion and the peripheral portion of the motor substrate and having lower mechanical strength than the central portion and the peripheral portion in order to reduce the inclination of the rotor rotation axis according to the size. And a plastic deformation force applying means for adding

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described based on preferred embodiments shown in the accompanying drawings.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a motor using a motor substrate according to a preferred first embodiment of the present invention will be described with reference to FIGS. 1 (a) and 1 (b), FIGS. 2 (a) and 4 (a). ,
explain. In the following, for the sake of simplicity, the dimensions or the size are exemplified as merely examples, but the present invention is not intended to be limited in terms of the size.

The motor 1 shown in FIG. 2A comprises a chassis or base 10 as a motor board and a motor body 30 mounted on the motor board 10, and the motor board 10 is a disk player or the like. The board mounting holes 11, 12, 13 (FIG. 4A) to the frame or the motor mounting base 101 of the motor utilization device, and the motor board 1
Positioning holes 14 and 15 for defining orientation in plane 0
((A) of FIG. 4). The motor substrate 10 has a thickness of, for example, about 0.1 mm to 1 mm, typically 0.5 mm.
It is made of a steel plate such as stainless steel of about mm. The board mounting holes 11, 12, and 13 have a diameter of, for example, about 1 to 3 mm, typically about 2 mm, and are arranged at regular intervals along a circle having a radius of about 10 mm. In addition, positioning holes 14
Is slightly smaller than the diameter of the board mounting holes 11 to 13,
The small diameter of the positioning hole 15 is substantially the same as that of the positioning hole 14, and the long diameter is substantially the same as the diameter of the mounting hole. However, for example, the diameter of the positioning hole 14 may be larger than the diameter of the mounting hole, and these size conditions may be different from those illustrated.

That is, the upper surface 16 of the motor substrate 10, more specifically, the upper surfaces 16 of the holes 11, 12, and 13 are matched with the reference surface 102 of the motor mounting base 101 to provide a reference plane S of the motor 1. Therefore, the mounting bolts (not shown) are mounted on the board mounting holes 11 and 1 so that the center axis C of the rotating shaft of the motor 1 is perpendicular to the reference plane S.
2 and 13 and are screwed into the corresponding motor fixing tap holes 103 of the motor mounting base 101. Reference numeral 17 denotes a stator substrate support frame mounting hole in which a later-described stator substrate support frame 31 is fixed by outsert molding or the like, and reference numeral 18 denotes a bearing holder mounting hole in which a later-described bearing holder 33 is fixed by outsert molding or the like. Yes, 21
Is a weakened portion forming hole that forms the weakened region or the weakened portion 20 as a whole. The stator substrate support frame mounting hole 17 is
For example, they are distributed along a circle having a radius of about 7 to 8 mm. The reason why the distribution is not equal is that the current-carrying terminals to the stator substrate are located on the right side of FIG.
The holes 17 may be distributed at equal intervals in the circumferential direction. The bearing holder mounting holes 18 are also, for example, as large as the substrate mounting holes 11 to 13, but may be larger or smaller. Also, the number and distribution of the holes 17, 18 may be different from those shown.

The motor body 30 of the motor 1 is
Stator substrate support frame 31 fixed to motor substrate 10 with
Stator board 32 having, for example, six stator coils at equal intervals along the circumferential direction, and bearing mounting holes 3 of a bearing holder 33 fixed to motor board 10 by mounting holes 18
Thrust bearing plate 35 and the hole 34
And a rotor shaft or motor output shaft 37 rotatably mounted about a rotation center axis C by a cylindrical bearing 36 fitted on the shaft 37, and a rotor structure 38 attached to the rotation shaft 37.

The rotor structure 38 has annular plate-shaped multi-pole permanent magnets provided with permanent magnet portions alternately magnetized in the axial direction at equal intervals in the circumferential direction and facing the upper surface of the stator coil of the stator substrate 32 in the axial direction. A rotor body 39 composed of a structure,
The rotor body 39 is magnetically attached to the disc-shaped portion 40 (that is, fixed by magnetostatic attraction), and the rotating shaft 3 is formed by the inner cylindrical portion 41.
7, a yoke member 42 made of a soft magnetic material and a top annular flange portion 44 extending radially inward from the upper end of the cylindrical portion 43. The yoke member 42 is magnetically attached to the yoke member 42 from the lower end of the cylindrical portion 43. Lower annular flange 45 extending radially outward
And another yoke member 46 made of soft magnetic material facing the lower surface of the stator coil of the stator substrate 32.
Here, “up” and “down” are terms expressed with reference to FIGS. 1 and 2, and are not intended to limit the vertical direction of the motor 1.

The disk mounting surface on which the turntable reference plane parallel to the reference plane S is provided when the rotation center axis of the rotor rotation shaft 37 is perpendicular to the reference plane S is provided on the disc-shaped portion 40 of the yoke member 42. A turntable 50 having a disk 47 and a disk center hole fitting portion 48 to which the disk is fitted and mounted is fixed. Reference numeral 49 denotes an attraction magnet for attracting a clamp member (not shown) to clamp the disk with the disk interposed therebetween.

Numeral 51 denotes a cylindrical magnet arranged eccentrically for the purpose of keeping the rotor structure 38 in a stable rotating state as in Japanese Patent Application Laid-Open No. 2000-69711. Bearing holder 3 against impact on
Bearing holder 33 for supporting cylindrical bearing 36 via
Eccentrically fitted and fixed to the outer periphery of the motor board 1
The bearing 51 is mounted on the step 52 of the bearing holder 33 in order to avoid the possibility that the magnet 51 itself is broken due to the influence of the impact on the magnet 51.

In the motor 1 having the above configuration,
In the motor board 10, the central portion Dc including the center position E where the extension of the central axis C intersects is actually reinforced by the bearing holder 33, and the peripheral edge or the outer peripheral portion Dp is substantially reinforced by the stator mounting frame 31. I have. Note that the position E is not always a fixed point. These reinforced areas Dc, Dp
In the radial intermediate portion Dm including the weakened region 20, the motor substrate 10 and the yoke member 4 of the rotor structure 38 are compared.
A gap 53 is formed between the ring-shaped back yoke portion 45 and the intermediate plate Dm, and the intermediate portion Dm has relatively small strength. The weakened region forming hole 21 is formed in the intermediate portion Dm, and the intermediate portion Dm is connected to the substantially circular or annular weakened region Rw connecting the weakened region forming hole 21 (that is, the weakened region 2).
0, hereinafter, when indicated by comparison with the other regions Rc and Rp, the code Rw may be used instead of the code 20 as the weakened region), the inner central region Rc, and the outer peripheral region or the outer peripheral region. Rp. However, the boundaries between the regions Rc, Rw, Rp are not always strict. The weakened area forming holes 21 are provided, for example, at intervals of 90 degrees in a circumferential direction of a circle having a diameter of about 1 mm and a radius of about 5 mm. However, the diameter of the hole 21 may be larger,
Also, smaller holes may be provided. Further, a larger number (five or more) of holes may be distributed at equal intervals. In addition, the circle in which the holes 21 are distributed and thus the radius of the weakened area may be larger or smaller. Naturally, the motor board 10
Is designed to be sufficiently strong to such an extent that the weakened region Rw of the intermediate portion Dm can sufficiently withstand severe use conditions within a range where the motor 10 can be assumed.

In such a motor 1, the rotation center axis or center axis C of the rotor rotation shaft 37 is preferably perpendicular to the reference plane S of the motor board 10.
As shown in FIG. 1 (a), even when inclined with respect to the vertical direction C0, the inclination angle θ with respect to the direction C0
Is required to be equal to or smaller than a predetermined angle θ0 (in other words, a solid angle Ω0 around C0). The magnitude of the angle θ0 may vary depending on the specific application symmetry of the motor 1 or the specific application. In the small flat motor 1 as shown in the figure, for example, θ0 = about 0.1 degrees, that is, 0.2π /
360 = about 2/1000 radians.

On the other hand, the flatness of the upper surface 16 of the motor substrate 10 and the bearing holder 3 with respect to the mounting hole 18 of the motor substrate 10
3, the angle of inclination of the bearing mounting hole 34 of the bearing holder 33 (or the degree of perpendicularity to the surface S of the motor board 10), the angle of inclination of the inner and outer peripheral surfaces of the bearing 36 (or the angle of the motor board 10). The perpendicularity of the central axis of the inner and outer peripheral surfaces to the surface S) and the inclination angle between the peripheral surface of the rotating shaft 37 and the center of the bottom surface (or the peripheral surface of the rotating shaft 37 and the rotational center axis C of the rotating shaft 37)
, The right angle with the tangent plane of the bottom surface of the rotating shaft 37 at the position where the crossing occurs, although there is a certain degree of difference depending on the related parts, it is difficult to avoid a certain degree of manufacturing tolerance, and if they act in a direction in which errors accumulate, As a result, the center axis C becomes the ideal center axis C0.
(Perpendicular to reference plane S), allowable angle range θ
It may tilt beyond zero. Such an inclined state is shown in FIG.

When the center axis C is inclined leftward by an angle θ (provided that θ> θ0) with respect to a perpendicular C0 with respect to the reference plane S as shown in FIG. In a state where the substrate 10 is firmly supported in the vicinity of the outer periphery, an external force as shown by a symbol F in FIG. 1B is applied to the inside of the weakened region Rw of the unreinforced intermediate portion Dm, that is, the central region Rc or It is added to the portion of the weakened region Rw from the center, where the rotor structure 38 is inclined downward. This external force F
Is large enough to cause plastic deformation in the weakened area Rw, the weakened area Rw is pushed up by the left portion Rwh and pushed down by the right portion Rwm, as shown in FIG. As a result, the central region Rc of the motor substrate 10 swings in the K1 direction, and the rotor rotation shaft 37 and the rotor structure 38 swing in the K1 direction. The central axis C passing through the central region Rc approaches the perpendicular C0 of the reference plane S with the plastic deformation in the K1 direction.
The magnitude (and, in some cases, the position) of the external force F is adjusted or the external force F is adjusted so that the magnitude of the swing in the K1 direction accompanying the plastic deformation in the weakened region Rw becomes such that the inclination angle θ becomes just zero. Is repeatedly added, the inclination of the rotor rotation shaft 37 is corrected so that the center axis C substantially matches the ideal center axis C0, and the rotation center axis C of the rotor rotation shaft 37 is made perpendicular to the reference plane S. obtain.

Note that, as in the motors shown in FIGS. 1A and 1B and FIG.
In the case of the motor 1 having the intermediate portion Dm whose mechanical strength is relatively weaker than that of the peripheral portion Dp, even if the motor substrate 10 itself does not have the weakened region 20, the effective weakened region is not Part Dm, the intermediate part Dm
, A predetermined amount of external force F can be applied to the radially inner region of the intermediate portion Dm, causing the same bending deformation to occur at the intermediate portion Dm of the motor substrate 10, and the rotor rotating shaft 37. May be adjusted.
However, in order to adjust the tilt state of the central portion Dc of the motor substrate 10 with high accuracy, it is preferable that the weakened region 20 is formed.

As shown in FIG. 4A, a plurality of holes 21 are formed.
When the weakened region 20 is formed, the shape of the hole 17 may be another shape such as an ellipse instead of a circle, and the number may be more or less than four instead of four. Instead of arranging all the holes on a single circle, the same or different numbers of holes having the same or different shapes and sizes may be arranged on a circle such as a plurality of concentric circles.

When the weakened region 20 is formed in the motor substrate 10, the holes 21 are not distributed along the region 20 as shown in FIG. As shown in FIG. 2 (b), an annular groove 21a is formed on at least one surface, preferably both surfaces, and the annular groove 21a is formed.
The weakened region 20 may be formed by 1a. FIG.
(A) and FIG. 3 (a), as shown in FIG.
Instead of a, the annular body 21b made of another material whose mechanical strength is weaker than the material of the motor substrate 10 is inserted into the annular hole 21b1.
To form the weakened region 20. Further, as shown in FIG. 5B and FIG. 3B, the disc-shaped thin portion 21 partitioned from the outer peripheral portion Rp by the circular step 21c.
The weakened region 20 may be formed by c1. in this case,
The central portion Dc reinforced by the bearing holder 33 in which the leg is filled in the hole 18 and the outer peripheral portion are the central region Rc.
Work as c.

The perpendicularity of the rotor rotating shaft 37 of the motor 1 having the motor substrate 10 having the above-described weakened region 20 or the direction and magnitude of the inclination with respect to the ideal center axis C0 are detected, and the rotation is performed based on the detection. The inclination angle detection and adjustment using the rotor rotation axis verticalization device 60 for adjusting the verticality or inclination of the shaft 37 will be described in more detail with reference to FIG.

The rotor rotating shaft verticalizing device 6 shown in FIG.
Reference numeral 0 denotes a machine frame 64 including a base portion 61, a plurality of support portions 62 extending upward from the base portion 61, and an upper support portion 63 extending horizontally at an upper end of the support portion 62. Have. 6 is a YZ plane, and an XYZ three-dimensional orthogonal coordinate system (right-handed system) fixed to the device 60 is considered for convenience of description. Referring to FIG. 4A, a coordinate system is adopted as indicated by X, Y, and Z in FIG.

The base portion 61 has a motor mounting frame portion 65 extending horizontally at the upper end, and the motor 1 is mounted on the motor mounting frame portion 65 with the motor substrate 10.

The base 61 also has a horizontal base 6 at the lower end.
An XY table 70 is mounted on the pedestal 66, and the XY table 70 has a laser displacement meter 7.
1 is attached. Therefore, the position of the laser displacement meter 71 in the horizontal plane (XY plane) can be accurately controlled by the XY table 70. This laser displacement meter 71
Is provided with a light-emitting portion 72 for laser light and a light-receiving portion 73 such as a line sensor arranged in the Y direction, for example. The distance L between the displacement gauge 71 composed of the light emitting unit 72 and the light receiving unit 73 and the reflection surface of the object to be measured is measured based on the position of the sensor that has received the light in the Y direction.

A dummy disk 76 having a bottomed cylindrical shape having a bottom portion 74 and having an outwardly directed annular flange portion 75 at the upper end is attached to the disk mounting turntable portion 50 of the motor 1. This dummy disk 76
It is made of a magnetic material such as iron, is attracted by the magnet 49 at the center of the turntable 50, is just fitted to the fitting portion 48, and the upper surface of the annular flange portion 75 is
It is fixed in a state in which it is in close contact with a reference plane (disc mounting surface) 47 of zero. On the lower surface of the annular flange portion 75 of the dummy disk 76, a mirror made of an aluminum evaporated film is formed via a glass layer.

On the other hand, the upper fixed support 63 is provided with a rod portion 8 of a hydraulic cylinder device 80 such as a hydraulic cylinder device.
The main body or the cylinder portion 82 of the cylinder device 80 is mounted on a movable base 83. In addition, as long as the force applied to the motor substrate 10 and the deformation or displacement applied to the motor substrate 10 can be controlled, instead of the fluid pressure cylinder device 80, if necessary, another electric device such as an electric device including a power transmission system may be used. It may be something. On the movable base 83,
A plurality of movable struts 84 extending through the plurality of vertical holes 66 of the upper support base 63 are attached, and the movable struts 8 are mounted.
The lower end of 4 is connected to a lower movable support base or a movable plate 85 which is slidably fitted in the vertical direction to the fixed support portion 62 of the machine frame 64.

A plurality of rod structures 86 for positioning and fixing the motor board 10 are provided below the movable plate 85.
A plurality of energizing probe structures 8 for rotationally driving the motor 1
And a rod-shaped push pin or pressure pin (pressure pin) 89 extending downward through an opening 88 of the movable plate 85 around the center axis Cp. A pressure pin support mechanism 90 that supports the position so as to be adjustable is provided.

Each positioning / fixing rod structure 86 is
A small-diameter, long pin or rod 91 inserted through the substrate holes 11, 12 or 13 of the motor substrate 10 and the through hole 67 of the motor mounting frame 65 located directly below the rod structure 86.
And a board pressing member 92 made of a cylindrical sleeve fitted to the rod 91 and pressing and fixing the motor board 10 at the lower end surface.
And a pressing spring 93 disposed around the rod 91 between the substrate pressing member 92 and the movable plate 85. When the movable plate 85 is at the upper end position, the rod 91 is removed from the hole 67, and when the movable plate 85 starts lowering, first, the rod 91 is moved to the corresponding substrate mounting hole 11, 12, or 13 of the motor substrate 10 and the lower portion. When the movable plate 85 is further inserted into the hole 67 of the motor mounting frame portion 65 and the movable plate 85 is further lowered, the substrate pressing member 92 presses the motor substrate 10 by the elastic force of the pressing spring 93, and the motor substrate 10 is moved to the reference surface of the substrate 10. S is fixed in a state where S coincides with a reference plane around the hole 67 of the motor mounting frame 65.

The energizing probe structure 87 has an energizing probe terminal 87a which can be elastically retracted at the tip thereof, and the movable plate 85 is lowered so that the positioning / fixing rod structure 86 allows the motor substrate 10 to have a predetermined strength. When the fixing is completed, the motor 1 is electrically contacted with the energizing terminal of the stator substrate 32 of the motor 1 to be energized.

In the pressure pin support mechanism 90, for example, a disk 94 having a pressure pin or a push pin 89 at an eccentric position is rotated around a central axis Cp according to rotation of a shaft 95. ing. Note that the center axis Cp substantially coincides with the rotation center axis C of the rotor rotation shaft 37 of the motor 1. However, it is not necessary to make them coincide with each other with such strictness that the influence of positional deviation due to the inclination of the rotation center axis C becomes a problem, and it is sufficient that the position pressed by the push pin 89 satisfies the required positional accuracy. I just need.

The pressure pin 89 of the pressure pin support mechanism 90 is
Substrate holding member 92 of positioning / fixing rod structure 86
Until the movable plate 85 is lowered to the position where the pressing and fixing of the motor substrate 10 is completed, the lower end 96 is separated from the motor substrate 10, and after the positioning and fixing of the motor substrate 10 is completed, the movable plate 85 is further lowered. When it is moved to the position, the portion inside the weakened area 20 of the motor substrate 10 is pressed downward with a predetermined pressing force.

The perpendicularity or inclination of the rotation center axis C of the rotor rotation shaft 37 of the motor 1 with respect to the reference plane S is detected by using the rotor rotation axis verticalization device 60 configured as described above. When the height is low, the weakened region 20 of the motor substrate 10 is adjusted so as to be plastically deformed to increase its verticality. About tilt detection / correction operation (verticalization operation)
This will be further described with reference to FIG.

First, the cylinder device 80 is set to the initial position where the rod 81 takes the extended position, and the positioning / fixing rod structure 86 and the like are pulled up to the uppermost position in the Z direction.
The motor 1 with the dummy disk 76 mounted at a predetermined position on the turntable 50 is placed downward so that the substrate mounting holes 11, 12, 13 are aligned with the corresponding holes 67 of the motor mounting frame 65. Thereby, the motor substrate 1 of the motor 1
The zero surface 16 is made to coincide with the reference surface S on the upper surface of the motor mounting frame portion 65 (exact coincidence is realized at the time of subsequent pressing and fixing). It should be noted that the motor mounting frame 65 is formed so that the entire upper surface thereof provides an accurate reference surface S, and at least the periphery of the upper end opening of the hole 67 is the reference surface S.
What is necessary is just to be formed so that it may give. At this time, holes for aligning the X-Y positioning holes 14 and 15 of the motor substrate 10 may be formed in the motor mounting frame 65.

Next, the cylinder device 80 is driven to retract the rod 81, and the movable plate 85 is moved downward by -Z.
, And the pins 91 of the positioning / fixing rod structure 86 are inserted into the corresponding board mounting holes 11 of the motor board 10.
12 or 13 and corresponding hole 67 of motor mounting frame 65
The motor substrate 10 is pressed and fixed by the pressing member 92 of the positioning / fixing rod structure 86.
As a result, the surface 16 of the motor substrate 10 is accurately positioned on the reference surface S
Is matched. Here, three pins 91 corresponding to the board mounting holes 11, 12 and 13 are holes 11, 12 and 1 respectively.
3 and the position and orientation of the motor board 10 in the XY plane (rotational angle in the XY plane)
Can be accurately defined, three pins 91 and hole 1
By fitting with 1, 12, 13 and the three holes 67 thereunder,
Is enough. However, the pin 91 and the holes 11, 12, 13, and 67
Depending on the fitting of the motor substrate 10 in the XY plane.
If the position and orientation (rotation angle in the XY plane) are not accurately defined and play remains in the XY plane, the positioning holes 14, 1 are similar to the pins 91.
5 are inserted into the holes 14,
15 is attached to the movable plate 85 at a position in the XY plane corresponding to
1, 12 and 13 are similarly inserted into the holes 1 in the substrate 10.
4 and 15 are inserted. In this case, of course, the holes 14, 1 are also provided at the corresponding positions of the motor mounting frame 65.
It is preferable to form a hole having the same shape as 5. Thereby, when the pin 89 applies a plastic deformation force to the substrate 10,
The displacement of the substrate 10 can be prevented, and the variation in plastic deformation can be minimized.

As described above, when the motor 1 is positioned and fixed at the motor substrate 10, the energizing probe terminals 87 a of the plurality of probe structures 87 are also electrically connected to the corresponding energizing terminals of the stator substrate 32. Contacted.

Next, a current is applied to the stator substrate 32 of the motor 1 through the probe structure 87 so that the rotor structure 38
Is rotated together with the dummy disk 76.

Next, the distance to the lower mirror surface of the flange portion 75 of the dummy disk 76 in such a rotating state is measured by the laser displacement meter 71. Laser displacement meter 7
For example, the distance measurement by 1 is based on the assumption that the Z-axis actually coincides with the ideal rotation center axis C0 (ignoring the inclination of the rotation center axis), and the mirror surface is disregarded by the inclination of the rotation center axis C. Assuming that the position substantially coincides with the XY plane, the first position (0,-) from the surface of the laser displacement meter 71 is assumed.
The distance to each of the second position (Q, 0), the second position (Q, 0, 0), the third position (0, Q, 0), and the fourth position (-Q, 0, 0) is measured. Here, Q is, for example, a value that is exactly intermediate between the radius of the outer peripheral portion and the radius of the inner peripheral portion of the annular flange portion 75 (not shown in FIG. 6). Therefore, the light from the laser displacement meter 71 does not deviate from the mirror surface within a range where the inclination of the rotation center axis C varies. In addition, as long as measurement by the laser displacement meter 71 is performed at three or more points forming a plane, four points (four positions)
Alternatively, distance measurement may be performed at three points (three positions) or at five or more points (five or more positions). Of course, in order to always use the direction and magnitude of the tilt as accurately as possible with a relatively small number of measurements, the measurement points are typically distributed almost uniformly in the circumferential direction. Is preferred. Further, even if the entire measurement point is changed to a position rotated by a desired angle around the central axis, the same measurement is naturally performed, so the measurement using the four points shown here is a preferable example. It is merely an example.

First, as shown in FIG. 6, it was assumed that the XY table 70 was driven to measure the distance at the position corresponding to the first position, and that the rotation center axis C was not inclined. From the displacement gauge 71 to the annular flange 75
Is positioned in consideration of the distance to the mirror surface and the inclination of the emitted laser light Bi. In the following, for the sake of simplicity of description, this size is −
Assume Δ (not shown). Therefore, when the reflection at the first position (0, -Q, 0) on the mirror surface is to be viewed, the XY table 70 is used to move the laser displacement meter 71 to the corresponding position (0, -Q-Δ). Position.
Next, the reflected light Br from the mirror surface with respect to the emitted light Bi of the laser displacement meter 71 is received by the light receiving portion 73 such as a line sensor, and the distance from the light emitting portion (the light emitting point) 72 to the light receiving point of the light receiving portion 73 is obtained. , An actual distance L1 to the mirror surface at the first position is obtained.

For example, as shown in FIG.
7, the center axis C is inclined with respect to the ideal center axis C0, assuming that the same cross section of the motor 1 is shown in FIG. 1A and FIG. Y
Since the mirror surface is rotated counterclockwise by the angle θ in the −Z plane, the mirror surface to be at the first position (0, −Q, 0) is shifted downward by almost Q · θ. Become. Q
= 5 mm and θ-θ0 = about 2/1000 radians, Qθ = 1/100 mm = about 10 μm.
The laser displacement meter 71 only needs to detect such a displacement. In this case, the distance L1 (not shown) deviates from the original distance L (not shown) by Qθ and is approximately L1 to (L−
Qθ). As a result, assuming that the beam Bi has an inclination angle α (not shown) with respect to the vertical direction, the distance from the light emitting point 72 to the light receiving point of the light receiving unit 73 is, for example, approximately 2 (LQ
θ) tan (α), and the original distance 2Ltan (α)
The position becomes closer to the light emitting point 72 by −2Qθ tan (α) as compared with. Here, for the sake of simplicity, the inclination angle θ of the mirror surface due to the inclination of the angle θ of the rotation center axis C is ignored, but in actuality, this inclination θ is considered and attached as desired. What is necessary is just to calculate more accurately in consideration of the length in the Z direction from the reference surface S to the mirror surface.

Similarly, the laser displacement meter 71 is positioned at the corresponding position (Q, -Δ) by the XY table 70 in order to take reflection at the second position (Q, 0, 0). , The distance L2, and the laser displacement meter 71 is moved to the corresponding position (0, Q, 0) in order to take reflection at the third position (0, Q, 0).
Q-Δ), the distance L3 is obtained, and the laser displacement gauge 71 is moved to the corresponding position (-Q, -Δ) so as to take reflection at the fourth position (-Q, 0, 0). And the distance L4 is obtained. In the example shown in FIG. 1A, L2 = L4 = L, and L3 = 2 (L + Qθ)
tan (α).

Of course, in order to obtain the distances L1 to L4, other types such as another type of laser displacement meter (for example, use of interference with a reference beam branched by a half mirror placed in the middle of the optical path). In addition, instead of measuring the axial displacement of the reflection surface of the dummy disk due to the inclination, the inclination angle is directly detected, such as detecting the inclination as a change in the angle of the reflected light. You may. However, in the following, it is assumed that displacement is measured as described above for simplicity of explanation.

Normally, the direction in which the rotation center axis C of the rotor rotation shaft 37 is most inclined with respect to the ideal rotation center axis C0 is an arbitrary direction in the XY plane. L1, L measured as the plane
2, the approximate plane closest to the point defined by L3 and L4 is obtained by, for example, the least square method by the arithmetic unit 77 connected to the light receiving unit 73, and the calculated plane is the maximum with respect to the XY plane. The direction in which the inclination is taken is set as the maximum inclination direction, and is further obtained by the calculation unit 77.

The rotation center axis C of the rotor rotation shaft 37
When the disk mounting surface 47 of the turntable 50 is inclined (displaced from the vertical direction) with respect to
Since an output in which sinusoidal fluctuations of a cycle coinciding with the rotation cycle of the motor 1 are overlapped is obtained from the light receiving unit 73, an intermediate value between the maximum value and the minimum value is extracted as the output of the light receiving unit 73. The sine wave component may be removed by an analog filter. Here, if the amplitude of the sine wave component is too large, it is rejected as a defective product.

Next, in order to position the pressing pin 87 in accordance with the direction obtained in this way, the arithmetic unit 77
Sends a positioning position signal of the pressing pin 87 to the control unit 78, and the control unit 78 rotates the shaft 95 and the disk 94 at the initial position in the rotation direction by a predetermined angle via the rotation driving unit 90a of the pressing pin support mechanism 90. Then, move the pin 89 to the center axis C.
Positioning is performed in the circumferential direction of p. In the case of the example shown in FIG. 6, the pin 89 is moved from the circumferential position indicated by the solid line to the circumferential position partially indicated by the imaginary line 89.

Further, based on the information about the magnitude of the inclination 2Qθtan (α) or θ, the control unit 78 presses or presses the cylinder device 80 with the cylinder device 80 in consideration of the plastic deformation characteristics and the springback characteristics of the motor substrate 10. A size to be determined is determined, and the pressure driving information is given to the pressure cylinder 80.

Next, after the rotation of the motor 1 via the probe structure 87 is stopped, the rotation of the motor 1 is stopped in accordance with the magnitude of the inclination.
The cylinder device 80 is driven, the pins 89 are pushed down via the movable plate 85, and a predetermined position slightly inside the weakened portion 20 of the motor board 10 is pushed in the -Z direction, so that the position of the weakened portion 20 of the motor board 10 is reduced. A bending torque is applied to cause plastic deformation at the weakened portion 20 to oscillate and displace the central portion of the motor substrate 10 so that the desired inclination angle θ is practically eliminated. If desired, the motor substrate 10 may be plastically deformed while the rotor structure 38 of the motor 1 is rotating.

When the pressing by the push pins or the pressing pins 89 is completed, the pressing cylinder 80 is driven to slightly separate the pins 89 from the substrate 10, and the mirror surface of the dummy disk 76 is again measured by the laser displacement meter 71. The distance to the four points is measured to measure the inclination state of the rotation center axis C. When the condition of θ ≦ θ0 is not satisfied, the plastic deformation of the weakened region 20 of the motor substrate 10 by the pressing pin 89 is determined. The repetition is repeated, and when θ ≦ θ0, the plastic deformation processing is completed. In this manner, the rotation center axis C which is inclined by the angle θ as shown in FIG.
1 (b), as shown by the imaginary line in FIG. 1 (b), the outer peripheral portion of the disk mounting surface 47 of the turntable 50 is The most protruding circumferential portion (the right portion in the example of FIG. 1) due to the inclination of the angle θ is retracted by the height Qθ at the position of the radius Q.

When the plastic deformation of the motor substrate 10 is completed,
The cylinder device 80 is returned to the initial position, the pressing pin support mechanism 90 is returned to the initial position, and the motor 1 is taken out.

If desired, the circumferential position of the pressing pin 89 may be selected and the plastic deformation process may be performed by the pressing pin 89 while measuring the position of the mirror surface by the laser displacement meter 71. . Conversely, if desired, the above calculation and adjustment of the circumferential position of the pin 89 may be performed manually.

In FIG. 6, the motor substrate shown in FIG.
Although FIG. 4A shows an example in which the weakened portion forming holes 21 are provided as shown in FIG. 4A, another example as shown in FIG. 4B or FIG. 5A or FIG. It will be apparent that the plastic deformation process can be performed on the weakened region of the motor substrate 10 in the same manner in order to increase the verticality even when the weakened regions of various types are formed.

In order to apply a predetermined torque to the motor board 10 as shown in FIG.
7, instead of pressing the substrate 10 with the pressing pins 89, for example, as shown in FIG. 7, at least two claws 98,
After inserting with the claw 98, 98, the inner edges of the holes 21, 21 are gripped by the claws 98, 98, and then one claw 98 is moved upward and the other claw 98 is moved downward, so that the claw 98, 98 is moved downward. A couple-like bending torque may be applied between the gripping portions 98 to cause the weakened portion 20 to generate a predetermined amount of plastic deformation in a predetermined direction.

[Brief description of the drawings]

FIGS. 1A and 1B illustrate a vertical degree adjustment of a central axis of a rotor rotating shaft using a motor substrate according to a preferred embodiment of the present invention, and FIG. 1A shows a state where the central axis of the rotor rotating shaft is inclined. Sectional explanatory view (I of the motor board in FIG.
FIG. 4 shows a cross section along the line A-IA; however, for the purpose of clarifying the state of reinforcement of the legs of the bearing holder by outsert molding, as if merely at the legs of the bearing holder, FIG. (A) imaginary line IAi-
FIG. 4B is a cross-sectional explanatory view similar to FIG. 4A showing a state in which the motor substrate is plastically deformed at the weakened portion in order to eliminate the inclination.

FIG. 2 shows a motor using a motor board according to a preferred embodiment of the present invention, wherein FIG.
And (b) is a cross-sectional explanatory view similar to FIG. 1 in a case where the rotation center axis of the motor is not inclined, and (b) is a motor using a motor substrate of another preferred embodiment according to the present invention. Sectional explanatory drawing similar to (a) of FIG.

3A and 3B show a motor using a motor board according to a preferred embodiment of the present invention. FIG. 3A shows a motor using a motor board according to another preferred embodiment of the present invention. (B) is a cross-sectional explanatory view similar to (a) of a motor using a motor substrate of still another preferred embodiment according to the present invention.

FIG. 4 shows a motor board of a preferred embodiment according to the present invention, wherein (a) is a plan view of the motor board used in the motors of FIGS. 1 (a) and (b) and FIG. 2 (a). FIG. 3B is an explanatory plan view of a motor board used in the motor of FIG.

5A and 5B show a motor board of a preferred embodiment according to the present invention, wherein FIG. 5A is a plan explanatory view of a motor board used in the motor of FIG. 3A and FIG. FIG. 3B is an explanatory plan view of a motor board used in the motor of FIG.

FIG. 6 is an explanatory view of a device for detecting and adjusting the inclination of a rotation center axis of a motor according to a preferred embodiment of the present invention;

FIG. 7 is an explanatory view similar to FIG. 6, illustrating a device for detecting and adjusting the inclination of a rotation center axis of a motor according to another preferred embodiment of the present invention;

[Explanation of symbols]

 Reference Signs List 1 motor 10 motor board 11, 12, 13 mounting hole 14, 15 positioning hole 16 positioning surface 20 weakened portion (weakened area) 21 weakened portion forming hole 21a annular groove 21b annular body 21b1 annular hole 21c circular step 21c1 disk-shaped Thin portion 32 Stator substrate 33 Bearing holder 34 Bearing 37 Rotor rotating shaft 38 Rotor structure 47 Disk mounting surface 49 Magnet 50 Turntable 60 Rotor rotating shaft verticalizing device 70 XY table 71 Laser displacement meter 72 Light emitting unit 73 Light receiving Part 75 Annular flange part 76 Dummy disk 77 Operation part 78 Control part 80 Cylinder device 85 Movable plate (lower movable support base) 86 Positioning / fixing rod structure 89 Pressing pin (pressing pin, pressing rod) 90 Pressing pin support Mechanism 101 Motor mounting frame 102 Reference plane Cc Rotation center axis of rotor rotation axis C0 Ideal rotation center axis (axis perpendicular to reference plane S) Dc Central part Dm Intermediate part Dp Outer peripheral part Rc Central area Rw Weakened area Rp Peripheral area (outer peripheral area) S Reference Surface θ inclination angle (angle of deviation from vertical)

Continued on the front page F term (reference) 5D109 BA01 BA12 BA17 BA25 5H605 AA07 AA08 BB05 BB14 CC01 CC02 CC03 CC04 CC05 EA07 EA19 EA30 FF03 5H615 AA01 BB01 BB14 BB17 PP28 SS02 SS03 SS06 SS57 TT05 TT16

Claims (18)

[Claims] 1. A motor board to which a motor body is attached, the motor board having a weakened region that can be plastically deformed around a central region including a center position through which a rotation center axis of a rotor rotation shaft passes. 2. The motor substrate according to claim 1, wherein the weakened area includes a plurality of weakened portions formed at intervals in a circumferential direction of a circle around the center position. 3. The motor substrate according to claim 2, wherein the weakened portion comprises a hole or a recess formed in the motor substrate. 4. The motor substrate according to claim 1, wherein the weakened area includes an annular weakened portion around the central area. 5. The motor substrate according to claim 4, wherein the weakened portion comprises an annular groove or an annular body of a material having low mechanical strength. 6. A structure in which a central region is reinforced by a part of the motor body when attached to the motor body,
The motor substrate according to claim 1, wherein a portion inside the extension of the weakened region is thinner than a portion outside the extension. 7. A motor is formed by attaching a motor body to the motor substrate according to any one of claims 1 to 6, and detecting a perpendicularity of a rotor rotation axis with respect to a reference surface of the motor substrate. A method for verticalizing a rotor rotation axis, which comprises plastically deforming a weakened region so as to increase verticality. 8. A weakening region is plastically deformed by applying a pressing force to a portion of the motor substrate in a direction in which an angle formed by a rotor rotation axis with respect to a reference plane is the smallest inside the weakening region.
4. The method for verticalizing a rotor rotation axis according to item 1. 9. The weakening region according to claim 7, wherein a bending stress is applied to a weakening portion located in a direction in which the rotor rotation axis is most deviated from the vertical direction, inside the weakening region of the motor substrate, and the weakening region is plastically deformed. The method of verticalizing the rotor rotation axis. 10. A motor is formed by attaching a motor body to the motor board according to any one of claims 1 to 6, and detecting a perpendicularity of a rotor rotation axis with respect to a reference plane of the motor board, A motor manufacturing method comprising plastically deforming a weakened area so as to increase the perpendicularity when the degree is lower than a predetermined level. 11. The motor according to claim 10, wherein, when plastically deforming the weakened region, a pressing force is applied to a portion of the motor substrate inside the weakened region where the angle formed by the rotor rotation axis with respect to the reference plane is the smallest. Manufacturing method. 12. The motor according to claim 10, wherein, when the weakened region is plastically deformed, a bending stress is applied to a portion in the diameter direction in which the rotor rotation axis is most deviated from the vertical direction, inside the weakened region of the motor substrate. Production method. 13. A motor having the motor board according to claim 1. Description: 14. A motor in which the degree of perpendicularity of the rotor rotation axis is increased by the method for verticalizing the rotor rotation axis according to any one of claims 7 to 9. 15. A motor body having a motor body and a motor board supporting the motor body, wherein a portion of the motor board supported between a central portion supported by a bearing-related portion of a rotor rotating shaft and a peripheral portion supported by another motor component. For a motor in which the inner surface is separated from the motor main body and has a substantially annular intermediate portion whose mechanical strength is weaker than the central portion and the peripheral portion, the annular intermediate portion of the motor substrate is plastically deformed and the rotor rotating shaft is rotated. A vertical axis of the rotor center axis with respect to a reference plane of the motor substrate. 16. A motor whose rotor rotation axis is made vertical by the method according to claim 15. 17. A motor having a motor main body and a motor substrate supporting the motor main body, wherein an inner side is provided between a central portion of the motor substrate supported by a bearing holder of a rotor rotating shaft and a peripheral portion supported by another motor component. A motor having a substantially annular intermediate portion whose surface is separated from the motor body and whose mechanical strength is weaker than the central portion and the peripheral portion, wherein the annular intermediate portion of the motor substrate is plastically deformed and the motor substrate is formed. A motor in which the rotation center axis of the rotor rotation axis is perpendicular to the reference plane. 18. An inclination detecting means for detecting an inclination of a rotor rotation axis with respect to a direction perpendicular to a reference plane of a motor substrate, and an inclination of the rotor rotation axis in accordance with a direction and a magnitude of the inclination detected by the detection means. A plastic deformation force applying means for applying a force for plastically deforming an intermediate portion located between the central portion and the peripheral portion of the motor substrate and having lower mechanical strength than the central portion and the peripheral portion. Axis verticalizer.