JP2007317272A - Motor parts, manufacturing method of motor parts and motor parts manufacturing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adjust a relative position of a first reference position set at either a recording disk mounting part or an access section mounting part of motor parts with respect to a second reference position set at another side with a high degree of accuracy. <P>SOLUTION: In a base section 611 which is motor parts of a recording disk drive unit, an annular ring-like heated area 6114 is set at a periphery of a nearly planar displacement section 6115 set at a motor mounting section 6111. In a bottom side of the base section 611, the heated area 6114 is irradiated with a laser beam and heated and deformed, and a displacement section 6115 and a first reference position 81 which is set at the displacement section 6115 are displaced to a side opposite to a heating side relating to a center shaft J1 direction. As a result, the relative position in the center shaft J1 direction of the first reference position 81 to the second reference position set in a head assembly mounting section (namely, relative position between the head assembly mounting section and the motor mounting section 6111) can be adjusted with a high degree of accuracy. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a motor component related to an electric motor used for rotating a recording disk in a recording disk drive device, and a manufacturing technique of the motor component.

  2. Description of the Related Art Conventionally, a recording disk drive device called a hard disk device has a spindle motor (hereinafter referred to as “motor”) that rotationally drives a recording disk, and the recording disk is attached to a rotor hub of the motor. The rotor hub is rotatably supported with respect to the base portion via a bearing mechanism centered on a predetermined rotation axis. As one of such bearing mechanisms, a shaft fixed to the rotor hub and a base portion are provided. 2. Description of the Related Art A bearing mechanism (so-called fluid dynamic pressure bearing) that utilizes the dynamic pressure of lubricating oil between a sleeve portion that is fixed and into which a shaft is inserted is used.

  In the recording disk drive device, information is written to and read from the recording disk by accessing the recording disk rotating together with the rotor hub in a state where the head is in close proximity. Accordingly, when the recording disk is rotated in a state of being deviated from a predetermined plane perpendicular to the rotation axis (so-called surface runout occurs), read / write of information may be affected due to poor access of the head to the recording disk.

Such poor access due to surface deflection occurs when the disk mounting portion of the rotor hub is not parallel to the base portion, for example, when the sleeve portion is tilted and fixed with respect to the base portion. Therefore, in Patent Document 1, in a fixed frame to which a motor of a disk drive device is attached, a laser beam is irradiated from a side opposite to the motor to a part of the motor mounting portion, and the irradiation position of the laser beam on the fixed frame is determined. Disclosed is a technique for improving the parallelism of the disk mounting portion with respect to the fixed frame by correcting the inclination of the rotor hub with respect to the fixed frame caused by the mounting of the motor by causing the nearby portion to warp to the laser beam irradiation side. Yes.
JP 2002-373485 A

  Incidentally, poor access to the recording disk in the recording disk drive device also occurs due to causes other than attachment to the base portion of the motor. For example, when the base portion is manufactured, the motor mounting portion and the access portion mounting portion of the base portion are displaced in the vertical direction from the design position as a whole, and the motor mounting portion is relative to the access portion mounting portion in the vertical direction. If the position (that is, the relative position of the recording disk attached to the motor with respect to the head) deviates from the design value, an access failure may occur. In such a case, it is not possible to prevent poor access only by correcting the inclination of the rotor hub with respect to the base portion.

  In recent years, with the miniaturization of motors, the base portion is manufactured by press working from the viewpoint of reducing the thickness and securing the strength of the base portion and reducing the cutting cost. However, since press processing has a limit in improving processing accuracy as compared to cutting, there is a high possibility that the relative position shift occurs more than in manufacturing by cutting, and the yield may be reduced. .

  Here, as one of the methods for correcting the displacement of the relative position between the motor mounting portion and the access portion mounting portion, one of the motor mounting portion or the access portion mounting portion is pressed in the vertical direction to change the relative position with respect to the other. It is possible. However, since the base portion plastically deformed by pressing tends to return to its original shape to some extent by elastic recovery when the pressing is released (so-called springback occurs), it is difficult to manage the correction amount with high accuracy. It is. In addition, when pressed strongly, damage such as scratches may occur on the surface of the base portion.

  The present invention has been made in view of the above problems, and provides a relative position with respect to a second reference position provided at the other of the first reference position provided at one of the recording disk attachment portion and the access portion attachment portion of the motor part. The purpose is to adjust with high accuracy.

  The invention according to claim 1 is a motor component including a base portion to which an electric motor used for rotating a recording disk in a recording disk driving device is attached, and includes a part of a plate-like base portion. And a recording disk mounting part to which the recording disk is directly or indirectly mounted, and an access part mounting part that includes a part of the base part and an access part for reading and / or writing information to and from the recording disk. A heated region set on the outer periphery of a substantially flat displacement portion provided on one of the base portions of the recording disk mounting portion and the access portion mounting portion in the direction of the central axis of the recording disk mounting portion By heating and deforming from one side of the recording disk, the recording disk mounting portion and the access portion mounting portion are provided on the one side. The first reference position is displaced together with the displacement portion to the side opposite to the heating side with respect to the central axis direction, and the first reference position with respect to the second reference position provided on the other of the recording disk attachment portion and the access portion attachment portion. The relative position of the reference position with respect to the central axis direction is adjusted.

  Invention of Claim 2 is a motor component of Claim 1, Comprising: The heating with respect to the said to-be-heated area | region is performed over the outer periphery of the said displacement part.

  A third aspect of the present invention is the motor component according to the first or second aspect, wherein the heating of the heated area is opposite to the side of the base portion on which the recording disk and the access portion are attached. It is made from.

  According to a fourth aspect of the present invention, there is provided a motor component including an electric motor used for rotating a recording disk in a recording disk driving device and a base portion to which the motor is attached. A recording disk mounting portion including a recording section and a motor, and an access section mounting portion including a part of the base portion and an access portion for reading and / or writing information to and from the recording disk. And heating a heated area set on the inner periphery of a substantially flat and annular displacement portion provided on the rotor hub of the motor from the side where the recording disk is attached in the central axis direction of the recording disk attachment portion. By deforming, the first reference position provided on the rotor hub is moved in the central axis direction together with the displacement portion. And is displaced to the heating side, the relative positions about the center axis direction of the first reference position is adjusted with respect to the second reference position provided in the access unit mounting portion.

  According to a fifth aspect of the present invention, in the motor component according to the fourth aspect, the heating of the heated region is performed over the entire inner periphery of the displacement portion.

  A sixth aspect of the present invention is the motor component according to the fourth or fifth aspect, wherein the displacement portion is a substantially annular disk mounting portion on which the recording disk of the motor is mounted.

  According to a seventh aspect of the present invention, there is provided a motor component including an electric motor used for rotating a recording disk in a recording disk driving device and a base portion to which the motor is attached. A recording disk mounting portion including a recording section and a motor, and an access section mounting portion including a part of the base portion and an access portion for reading and / or writing information to and from the recording disk. The rotor hub of the motor is a substantially flat and substantially annular displacement part, on which the recording disk is placed, and on the outer periphery of the disk placing part, from the disk placing part A cylindrical portion extending to the base portion, and deforms by heating an annular heated region set on the outer surface of the cylindrical portion Accordingly, the first reference position provided on the disc mounting portion is displaced toward the base portion with respect to the central axis direction of the recording disc attachment portion, and the second reference position provided on the access portion attachment portion is displaced. A relative position of the first reference position with respect to the central axis direction is adjusted.

  The invention according to an eighth aspect is the motor component according to the seventh aspect, wherein the heating of the heated region is performed over the entire circumference of the cylindrical portion.

  The invention according to claim 9 is the motor component according to any one of claims 1 to 8, wherein the base portion is formed by press working.

  A tenth aspect of the present invention is the motor component according to any one of the first to ninth aspects, wherein the heating of the heated area is in a circumferential direction centered on the central axis of the recording disk mounting portion. By being biased, the inclination of the displacement portion with respect to the central axis is also adjusted.

  The invention according to claim 11 is a method of manufacturing a motor part including a base part to which an electric motor used for rotating a recording disk in a recording disk drive device is attached, and a) a plate-like base part And a recording disk mounting portion on which the recording disk is mounted directly or indirectly, and an access section that includes a portion of the base portion and that reads and / or writes information on the recording disk A step of holding a motor component having an access portion attachment portion, and b) a disk member attached to the recording disc attachment portion or the recording disc attachment portion with respect to a central axis direction of the recording disc attachment portion, and the access The second reference position provided at the other of the first reference positions provided at one of the part mounting portions A step of measuring a pair position; and c) a heated region set on an outer periphery of a substantially flat displacement portion provided on one of the base portions of the recording disk attachment portion and the access portion attachment portion, By heating and deforming from one side in the central axis direction based on the relative position, the first reference position together with the displacement portion is displaced to the side opposite to the heating side in the central axis direction, and the relative position is set. Adjusting.

  A twelfth aspect of the invention is a method of manufacturing a motor component according to the eleventh aspect, wherein the recording disk mounting portion is fixed to the base portion and the motor to which the recording disk is directly mounted is provided. The method further includes a step of driving the motor between the step a) and the step b), and the measurement of the relative position in the step b) is performed while the motor is being driven.

  A thirteenth aspect of the present invention is the method of manufacturing a motor component according to the eleventh or twelfth aspect, wherein the displacement portion is pressed from the heating side in the central axis direction in parallel with the step c). Or the process of pressing the site | part outside the said to-be-heated area | region from the opposite side to the said heating side regarding the said central axis direction is further provided.

  A fourteenth aspect of the present invention is a method of manufacturing a motor component including an electric motor used for rotating a recording disk in a recording disk driving device and a base portion to which the motor is attached, and a) a plate shape And a recording disk mounting part including a motor and a recording disk to which the recording disk is attached, and an access part including a part of the base part and reading and / or writing information to the recording disk. A step of holding a motor component having an access portion mounting portion; and b) the first reference position of the motor hub or the disk member attached to the rotor hub with respect to the central axis direction of the recording disk mounting portion. Work to measure the relative position to the second reference position provided in the access part mounting part And c) heating the heated area set on the inner periphery of the substantially flat and annular displacement portion provided on the rotor hub from the side on which the recording disk in the central axis direction is attached based on the relative position. And displacing the first reference position together with the displacement portion to the heating side with respect to the central axis direction to adjust the relative position.

  A fifteenth aspect of the present invention is a method of manufacturing a motor component including an electric motor used for rotating a recording disk in a recording disk driving device and a base portion to which the motor is attached, and a) a plate shape And a recording disk mounting part including a motor and a recording disk to which the recording disk is attached, and an access part including a part of the base part and reading and / or writing information to the recording disk. A step of holding a motor component having an access portion attachment portion; b) with respect to the central axis direction of the recording disc attachment portion, attached to the disc placement portion on which the recording disc of the rotor hub of the motor is placed or the rotor hub. Provided in the access portion mounting portion at the first reference position provided on the disc member. A step of measuring a relative position with respect to the second reference position, and c) a cylinder extending from the disk mounting portion to the base portion on the outer periphery of the disk mounting portion which is a substantially flat plate-like and substantially annular displacement portion. The center of the first reference position with respect to the second reference position by displacing the first reference position to the base side by heating and deforming an annular heated region set on the outer surface of the part Adjusting the relative position in the axial direction.

  The invention described in claim 16 is the method of manufacturing a motor component according to claim 14 or 15, further comprising a step of driving the motor between the step a) and the step b), b) Measurement of the relative position in the step is performed while the motor is being driven.

  The invention according to claim 17 is the method of manufacturing a motor component according to any one of claims 11 to 16, wherein the heating of the heated region in the step c) is performed by irradiation with a laser beam or an electron beam. Is.

  The invention according to claim 18 is the method of manufacturing a motor component according to any one of claims 11 to 17, wherein the heated region is melted and deformed in the step c).

  The invention according to claim 19 is the method of manufacturing a motor component according to any one of claims 11 to 17, wherein the heated region is deformed without melting in the step c).

  The invention according to claim 20 is the method of manufacturing a motor component according to any one of claims 11 to 19, wherein in the step c), the shape of the heated region or the displacement portion of the heated region. By changing the relative position with respect to, the amount of displacement of the displacement portion in the central axis direction is changed.

  A twenty-first aspect of the present invention is the method of manufacturing a motor component according to any of the eleventh to nineteenth aspects, wherein in the step c), a total energy amount or unit applied to the heated region. By changing the amount of energy per time, the amount of displacement of the displacement portion in the central axis direction is changed.

  The invention according to claim 22 is the method of manufacturing a motor component according to claim 21, wherein, in the step c), pulse-like heating is sequentially performed on a plurality of minute regions arranged in an annular shape. The amount of displacement of the displacement portion in the central axis direction is changed by changing the number of the plurality of minute regions.

  The invention according to claim 23 is a motor part manufacturing apparatus used for manufacturing a motor part including a base portion to which an electric motor used for rotating a recording disk in a recording disk driving device is attached, A recording disk mounting part including a part of a plate-like base part and to which a recording disk is mounted directly or indirectly, and reading and / or writing of information to the recording disk including a part of the base part A holding part for holding a motor part having an access part attaching part to which an access part to be attached is attached, and a disk member attached to the recording disk attaching part or the recording disk attaching part with respect to the central axis direction of the recording disk attaching part; And provided at the other of the first reference positions provided at one of the access portion mounting portions. (2) A measuring section that measures a relative position with respect to a reference position, and a heated area that is set on the outer periphery of a substantially flat displacement section provided on one of the base section of the recording disk mounting section and the access section mounting section Is deformed by heating from one side in the central axis direction based on the output from the measurement unit, thereby displacing the first reference position together with the displacement unit to the side opposite to the heating side in the central axis direction. And a heating unit that adjusts the relative position.

  According to a twenty-fourth aspect of the present invention, there is provided a motor part manufacturing apparatus used for manufacturing a motor part including an electric motor used for rotating a recording disk in a recording disk driving device and a base portion to which the motor is attached. A disk-shaped base part and a recording disk mounting part including a motor and a recording disk to be mounted; and a part of the base part and reading and / or writing of information to the recording disk. A holding portion for holding a motor component including an access portion attachment portion to which the access portion is attached, and a first member provided on a rotor hub of the motor or a disc member attached to the rotor hub with respect to the central axis direction of the recording disc attachment portion. With respect to the second reference position provided in the access portion mounting portion of the reference position A measuring unit that measures a pair position, and a heated area that is set on the inner periphery of a substantially flat plate-like and annular displacement unit provided on the rotor hub, from the side on which the recording disk in the central axis direction is attached to the measuring unit And a heating unit that adjusts the relative position by displacing the first reference position to the heating side with respect to the central axis direction together with the displacement unit by heating and deforming based on the output from.

  According to a twenty-fifth aspect of the present invention, there is provided a motor part manufacturing apparatus used for manufacturing a motor part including an electric motor used for rotating a recording disk in a recording disk driving device and a base portion to which the motor is attached. A disk-shaped base part and a recording disk mounting part including a motor and a recording disk to be mounted; and a part of the base part and reading and / or writing of information to the recording disk. A holding unit for holding a motor component including an access unit mounting unit to which the access unit is mounted; and a disk mounting unit on which the recording disk of the rotor hub of the motor is mounted with respect to the central axis direction of the recording disk mounting unit; The access at the first reference position provided on the disk member attached to the rotor hub. A measuring unit that measures a relative position with respect to a second reference position provided on the mounting unit, and an outer periphery of the disk mounting unit that is a substantially flat plate-like and substantially annular displacement unit; By heating and deforming an annular heated region set on the outer side surface of the cylindrical portion extending to the base portion, the first reference position is displaced toward the base portion side, and the first reference position relative to the second reference position is changed. A heating unit that adjusts a relative position of the one reference position in the central axis direction.

  The invention according to claim 26 is the motor component manufacturing apparatus according to any one of claims 23 to 25, wherein the heating unit irradiates the heated region with a laser beam or an electron beam. It is.

  A twenty-seventh aspect of the present invention is the motor component manufacturing apparatus according to the twenty-sixth aspect, wherein the holding is performed around a central axis of a displacement portion that passes through the center of the displacement portion of the motor component and faces the central axis direction. A rotating mechanism that rotates the unit, and a moving mechanism that moves the heating unit relative to the holding unit.

  The invention according to Claim 28 is the motor component manufacturing apparatus according to any one of Claims 23 to 27, wherein the heating area is controlled by controlling the heating section based on an output from the measurement section. Or a control unit that changes a displacement amount of the displacement unit in the central axis direction by changing a shape of the region or a relative position of the heated region with respect to the displacement unit.

  The invention according to claim 29 is the motor component manufacturing apparatus according to any one of claims 23 to 27, wherein the heating area is controlled by controlling the heating section based on an output from the measurement section. The controller further includes a controller that changes the amount of displacement of the displacement unit in the central axis direction by changing the total amount of energy or the amount of energy per unit time.

  In the present invention, the relative position with respect to the second reference position provided at the other of the first reference positions provided at one of the recording disk attachment part and the access part attachment part of the motor component can be adjusted with high accuracy.

  FIG. 1 is a longitudinal sectional view showing an internal configuration of a recording disk driving device 60 including an electric spindle motor 1 (hereinafter referred to as “motor 1”) according to a first embodiment of the present invention. The recording disk drive device 60 is a so-called hard disk device, and holds a disk-shaped recording disk 4 for recording information, an access unit 63 for writing and / or reading information to / from the recording disk 4, and holds and rotates the recording disk 4. And a housing 61 that houses the recording disk 4, the access unit 63, and the motor 1 in the internal space 610.

  As shown in FIG. 1, the housing 61 has an opening at the top and covers the opening of the base portion 611 having a lidless box shape to which the motor 1 and the access portion 63 are attached to the inner bottom portion, and the opening of the base portion 611. A plate-like lid member 612 that forms the space 610 is provided. In the recording disk drive device 60, a lid member 612 is joined to a base portion 611 to form a housing 61, and the internal space 610 is a clean space with extremely little dust and dirt.

  FIG. 2 is a plan view showing the inside of the recording disk drive device 60. As shown in FIGS. 1 and 2, the recording disk 4 is placed on the motor 1 and fixed to the motor 1 by a clamper 621. The access unit 63 includes a head assembly 631 that moves forward and backward with respect to the recording disk 4 by rotating about a predetermined rotation axis, and a lamp 632 shown in FIG. 2 that guides the head assembly 631 relative to the recording disk 4. Prepare.

  As shown in FIGS. 1 and 2, the head assembly 631 is a head 6311 that magnetically reads and writes information in the vicinity of the recording disk 4, an arm 6312 that supports the head 6311, and an arm 6312 that rotates. As a result, a head moving mechanism 6313 for moving the head 6311 relative to the recording disk 4 and the motor 1 is provided. When information is read from or written to the recording disk 4, the two arms 6312 rotated by the head moving mechanism 6313 are guided by the lamp 632 (see FIG. 2) to move upward and downward of the recording disk 4. Then, a desired position of the recording disk 4 is accessed in a state where the head 6311 is close to the rotating recording disk 4.

  FIG. 3 is a longitudinal sectional view showing the configuration of the motor 1 used for rotating the recording disk 4 (see FIG. 1) in the recording disk drive device 60. As shown in FIG. As shown in FIG. 3, the motor 1 is an inner rotor type motor, and includes a stator portion 2 that is a fixed assembly and a rotor portion 3 that is a rotating assembly. The rotor part 3 is centered on a central axis J1 of the motor 1 (which is also a central axis of a motor mounting part 6111 described later) via a bearing mechanism that uses fluid dynamic pressure by lubricating oil that is a working fluid. Is supported rotatably. In the following description, for convenience, the rotor part 3 side is described as the upper side and the stator part 2 side is the lower side along the central axis J1, but the central axis J1 does not necessarily coincide with the direction of gravity.

  The stator portion 2 is a part of a base portion 611 (see FIG. 1), a base plate 21 that holds each portion of the stator portion 2, and a substantially cylindrical shape that is a portion of a bearing mechanism that rotatably supports the rotor portion 3. A sleeve unit 22 and an armature 24 attached to the base plate 21 around the sleeve unit 22 are provided. The lower part of the sleeve unit 22 is press-fitted and fixed to the opening of the base plate 21, and the opening on the lower end side of the sleeve unit 22 is closed by a substantially disc-shaped seal cap 23.

  The sleeve unit 22 includes a substantially cylindrical shape centering on the central axis J1 and a sleeve 221 into which the shaft 311 of the rotor portion 3 is inserted, and a substantially cylindrical sleeve housing 222 attached to the outer periphery of the sleeve 221. The sleeve 221 is a porous member, and the sleeve housing 222 plays a role of holding the lubricating oil impregnated in the sleeve 221. The armature 24 includes a core 241 formed by laminating a plurality of silicon steel plates, and a coil 242 wound around a plurality of teeth of the core 241.

  The rotor unit 3 has a recording disk 4 (see FIG. 1) fixed thereto, a rotor hub 31 that holds each part of the rotor unit 3, and a field magnet that is attached to the rotor hub 31 and arranged around the central axis J1. 32. The field magnet 32 is an annular magnet magnetized with multiple poles, and generates a rotational force (torque) around the central axis J <b> 1 with the armature 24.

  The rotor hub 31 is integrally formed of stainless steel or the like, has a substantially cylindrical shape centered on the central axis J1, and protrudes downward (that is, the stator portion 2 side) from the upper end portion of the shaft 311. A convex part 312 extending upward and perpendicular to the central axis J1 and protruding upward, a substantially cylindrical part 313 protruding downward at the outer edge of the convex part 312, and an outside of the cylindrical part 313 A disk mounting portion 314 on which the recording disk 4 is mounted is provided which is a substantially flat and substantially annular portion protruding outward from the side surface. A substantially disc-shaped thrust plate 315 is attached to the lower end portion of the shaft 311.

  As shown in FIG. 3, in the motor 1, between the lower surface of the convex portion 312 of the rotor hub 31 and the upper end surface of the sleeve housing 222, between the inner surface of the sleeve 221 and the outer surface of the shaft 311, and below the sleeve 221. Side end surface and the upper surface of the thrust plate 315, between the lower surface of the thrust plate 315 and the upper surface of the seal cap 23, and the outer surface of the flange portion 224 at the top of the sleeve housing 222 and the cylindrical portion 313 of the rotor hub 31. A minute gap is provided between the inner surface and the inner surface.

  In the motor 1, the gap provided between the rotor hub 31, the sleeve unit 22, and the seal cap 23 is filled with lubricating oil, and the rotor portion is driven by a bearing mechanism that uses fluid dynamic pressure generated by the rotation of the rotor hub 31. 3 is supported in a non-contact manner through a lubricating oil. Thereby, the recording disk 4 (refer FIG. 1) attached to the rotor part 3 and the rotor part 3 can be rotated with high precision and low noise.

  FIG. 4 is a plan view showing a substantially plate-like base portion 611 to which the motor 1 and the access portion 63 are attached. In FIG. 4, the motor 1, the access unit 63, and the recording disk 4 fixed to the motor 1 are drawn with a two-dot chain line.

  4, the base portion 611 includes a motor attachment portion 6111 to which the sleeve unit 22 (see FIG. 3) of the motor 1 is attached, a head assembly attachment portion 6112 to which the head assembly 631 is attached, And the lamp attachment part 6113 to which the lamp | ramp 632 is attached is provided. In the following description, the head assembly attachment portion 6112 and the lamp attachment portion 6113 are collectively referred to as an “access portion attachment portion” to which the access portion 63 is attached. In the recording disk drive device 60, the motor mounting portion 6111 can be regarded as a “recording disk mounting portion” to which the recording disk 4 is indirectly mounted via the motor 1.

  Next, the manufacture of the motor parts of the recording disk drive device 60 will be described. In the present embodiment, the base portion 611 of the housing 61 corresponds to a motor component. As will be described later, a state in which another member is attached to the base portion 611 may be referred to as a motor component. However, in the motor component, the motor attachment portion 6111, the head assembly attachment portion 6112, and the lamp attachment portion 6113 are each at least a base portion. 611 is included. FIG. 5 is a diagram showing a configuration of a motor component manufacturing apparatus 7 used for manufacturing motor components. In FIG. 5, for convenience of illustration, a part of the base portion 611 and the motor component manufacturing apparatus 7 is drawn in cross section (the same applies to FIGS. 10, 13, and 16).

  As shown in FIG. 5, the motor component manufacturing apparatus 7 includes a holding unit 71 that holds a motor component (that is, the base unit 611), and a central axis J1 direction of a plurality of measurement positions on the base unit 611 (that is, in FIG. 5). Measuring unit 72 for measuring the height in the vertical direction), heating unit 73 for heating the base unit 611 held by the holding unit 71, rotating mechanism 74 for rotating the base unit 611 together with the holding unit 71, and heating the holding unit 71 The moving mechanism 75 which moves relatively with respect to the part 73, and the control part 76 which controls these structures are provided.

  In the motor component manufacturing apparatus 7, the base portion 611 is held by the holding portion 71 with the bottom surface facing downward in FIG. The upper side of the holding part 71 (that is, the side to which the motor 1 and the access part 63 (see FIG. 1) opposite to the bottom side of the base part 611 are attached). The measuring section 72 is arranged on the surface of the above (referred to as “mounting surface”). The measuring unit 72 is an optical distance sensor (so-called laser displacement meter) that measures the distance to the mounting surface of the base unit 611 in a non-contact manner.

  A heating unit 73 is disposed below the holding unit 71 (that is, the bottom surface side of the base unit 611). The heating unit 73 heats the base unit 611 by irradiating the bottom surface of the base unit 611 with a pulsed laser beam. An irradiating unit is provided. The moving mechanism 75 is a so-called XY table that moves the base portion 611 together with the holding portion 71 in two directions parallel to the bottom surface and the mounting surface of the base portion 611 and perpendicular to each other.

  As shown in FIG. 4, on the attachment surface side of the base portion 611, three first reference positions 81 that are measurement positions by the measurement portion 72 are provided in the motor attachment portion 6111, and three second reference positions 82 are access portions. The head assembly mounting portion 6112 of the mounting portion is provided. The three first reference positions 81 are arranged at an equal pitch on one circumference around the central axis J1 of the motor attachment portion 6111, and the three second reference positions 82 are the central axes of the head assembly attachment portion 6112. They are arranged at an equal pitch on another circumference centered on J2 (that is, the rotation axis of the head 6311 and the arm 6312). On the attachment surface side of the base portion 611, a third reference position 83 is provided at a position away from the motor attachment portion 6111 (a heated region described later).

  In the motor component manufacturing apparatus 7 shown in FIG. 5, the base unit 611 is moved relative to the measuring unit 72 by the moving mechanism 75, and the measuring unit 72 is related to the central axis J <b> 1 direction of the motor mounting unit 6111 by the measuring unit 72. And the first reference position 81, the second reference position 82, and the third reference position 83 are sequentially measured. Then, the distance between the three first reference positions 81 and the third reference position 83 and the distance between the three second reference positions 82 and the third reference position 83 are obtained. The relative position of the reference position 81 with respect to the second reference position 82 (more precisely, the relative position of the average position of the three first reference positions 81 with respect to the average position of the three second reference positions 82) is obtained.

  FIG. 6 is a bottom view of the base portion 611. In the motor component manufacturing apparatus 7, the base portion 611 held by the holding portion 71 from the bottom surface side is rotated at a constant speed by the rotation mechanism 74 (see FIG. 5) about the central axis J1. On the bottom surface side, a pulsed laser beam is irradiated from the heating unit 73 onto a minute irradiation region on the motor mounting portion 6111.

  As a result, in the motor mounting portion 6111 shown in FIG. 6, a laser beam is irradiated to an annular region 6114 (shown with a parallel oblique line in FIG. 6) centered on the central axis J1, and the region 6114 is heated. Is done. In the following description, the region 6114 is referred to as a “heated region 6114”. In the motor component manufacturing apparatus 7, pulsed heating is sequentially performed on a plurality of minute regions (in this embodiment, a circular region having a diameter of about 0.5 mm) arranged in a ring shape in the heated region 6114.

  FIG. 7 is a longitudinal sectional view of the base portion 611. In the base portion 611 shown in FIG. 6, the heated region 6114 is heated from the bottom surface side, so that the heated region 6114 is melted and temporarily expanded to the bottom surface side (that is, the heating side) with plastic deformation, As the temperature of the heated region 6114 decreases, the region 6114 contracts and deforms to the side opposite to the heating side (that is, the mounting surface side). As a result, the substantially flat portion 6115 surrounded by the heated region 6114 is displaced to the side opposite to the heating side in the direction of the central axis J1 as indicated by a two-dot chain line in FIG. In the following description, the portion 6115 on the motor attachment portion 6111 is referred to as a “displacement portion 6115”. As shown in FIG. 6, in the base portion 611, the first reference position 81 is provided on the displacement portion 6115, and the heated region set on the outer periphery of the displacement portion 6115 provided on the base portion 611. 6114 is heated and deformed from the bottom surface side, whereby the first reference position 81 is displaced together with the displacement portion 6115 to the mounting surface side (that is, the side opposite to the heating side in the direction of the central axis J1).

  In the motor component manufacturing apparatus 7 shown in FIG. 5, the displacement amount of the displacement portion 6115 is controlled by the total energy amount applied to the heated region 6114 by the heating portion 73. FIG. 8 is a diagram showing the relationship between the total amount of energy applied to the heated region 6114 and the displacement amount of the displacement portion 6115. As shown in FIG. 8, the displacement amount of the displacement portion 6115 is proportional to the total energy amount applied to the heated region 6114.

  In the above description, the displacement portion 6115 is displaced toward the mounting surface side of the base portion 611. Conversely, when the displacement portion 6115 is displaced toward the bottom surface side of the base portion 611, the holding portion 71 shown in FIG. The part 611 is held upside down (that is, in a direction in which the mounting surface faces the heating part 73). Then, the heated region set on the outer periphery of the displacement portion 6115 on the mounting surface of the base portion 611 is heated by being irradiated with a laser beam from the heating unit 73, so that the heated region is opposite to the heating side. As a result of the deformation, the displacement portion 6115 is displaced to the bottom surface side.

  FIG. 9 is a diagram illustrating a flow of manufacturing the motor component. When a motor component is manufactured, first, a pressing process is performed on a thin plate member formed of stainless steel or the like by a press processing device outside the motor component manufacturing apparatus 7, and the motor mounting portion 6111 and the access portion mounting are performed. A base portion 611 having a portion (that is, a head assembly attachment portion 6112 and a lamp attachment portion 6113) is formed (step S11).

  Subsequently, in the motor component manufacturing apparatus 7 shown in FIG. 5, the base portion 611 is held by the holding portion 71 (step S12), and the motor mounting portion 6111 with respect to the second reference position 82 of the head assembly mounting portion 6112 is measured by the measuring portion 72. The relative position of the first reference position 81 is measured (step S13).

  The output from the measurement unit 72 is sent to the control unit 76, and the relative position of the first reference position 81 measured by the measurement unit 72 with respect to the second reference position 82 (hereinafter referred to as “measurement relative position”) is previously stored. The design value of the relative position of the first reference position 81 stored in the control unit 76 with respect to the second reference position 82 (hereinafter referred to as “design relative position”) is compared (step S14). When the measurement relative position is within the allowable range of the design relative position, the manufacture of the base portion 611 is finished.

  On the other hand, when the measured relative position is outside the allowable range of the design relative position, the relative position of the first reference position 81 with respect to the second reference position 82 is adjusted. Specifically, first, the holding unit 71 is moved relative to the heating unit 73 by the moving mechanism 75, so that the heating unit 73 is positioned at a predetermined irradiation position with respect to the holding unit 71. Next, based on the output from the measurement unit 72 (that is, based on the relative positional deviation amount that is the difference between the measurement relative position and the design relative position), the control unit 76 outputs a pulse shape emitted from the heating unit 73. The number of shots per unit time of the laser beam (that is, the pulse interval) is set. As a result, the number of the plurality of minute regions irradiated with the laser beam in the heated region 6114 is set according to the relative positional deviation amount, and the total energy amount applied to the heated region 6114 is set.

  Then, the rotation mechanism 74 passes through the center of the displacement portion 6115 of the base portion 611 and is directed to the center portion J1 in the center of the displacement portion (in this embodiment, coincides with the center axis J1). Is rotated, and the heated region 6114 of the motor attachment portion 6111 is irradiated with a pulsed laser beam from the heating portion 73. In the motor component manufacturing apparatus 7, the heated region 6114 is heated by the heating unit 73 (that is, the entire outer periphery of the displacement unit 6115 is heated) while the base unit 611 rotates once, and the first reference is performed. The position 81 is displaced together with the displacement portion 6115 by a relative displacement amount in the direction of the central axis J1 on the side opposite to the heating side. Thereby, the relative position of the first reference position 81 with respect to the second reference position 82 in the direction of the central axis J1 is adjusted to be within the allowable range of the design relative position, and the manufacture of the base portion 611 is completed (step S15).

  In the motor component manufacturing apparatus 7, the relative position of the first reference position 81 after the displacement with respect to the second reference position 82 may be re-measured as necessary. In the unlikely event that the measured relative position is not within the allowable range of the design relative position, reheating of the heated region 6114 may be performed to readjust the relative position.

  When the manufacture of the base portion 611 that is a motor component is completed, the motor 1 is attached to the motor attachment portion 6111 of the base portion 611 shown in FIG. 4, and the head assembly 631 and the lamp 632 are attached to the head assembly attachment portion 6112 and the lamp attachment portion 6113. It is attached. Further, as shown in FIG. 1, after the recording disk 4 is attached to the motor 1, the lid member 612 is joined to the base portion 611 and the manufacture of the recording disk drive device 60 is completed.

  As described above, in the manufacture of the motor component (that is, the base portion 611) of the recording disk drive device 60, the first reference position 81 of the motor attachment portion 6111 and the second reference position 82 of the head assembly attachment portion 6112 are used. The relative position is measured, and the heated region 6114 of the motor mounting portion 6111 is heated based on the difference between the measured relative position and the design relative position, so that the displacement portion 6115 of the motor mounting portion 6111 is opposite to the heating side. Displace to.

  By the way, if the base portion 611 is plastically deformed and displaced only by pressing the displacement portion 6115, a springback occurs due to elastic recovery of the base portion, so that the displacement amount of the displacement portion 6115 is managed with high accuracy. Difficult to do.

  On the other hand, in the manufacture of the motor component according to the present embodiment, as described above, by displacing the displacement portion 6115 by heating the periphery of the displacement portion 6115, the displacement portion 6115 is pressed and displaced. Thus, the displacement amount of the displacement portion 6115 can be managed with high accuracy, and the relative position of the first reference position 81 with respect to the second reference position 82 in the direction of the central axis J1 (that is, the head assembly attachment portion 6112 of the motor attachment portion 6111). Relative position) can be adjusted with high accuracy.

  Thereby, when the motor 1 and the head assembly 631 are attached to the base portion 611, the relative position of the motor 1 with respect to the head assembly 631 can be within the range of the design value. As a result, the relative position of the recording disk 4 attached to the motor 1 with respect to the head 6311 is adjusted with high accuracy, and the access failure of the head 6311 with respect to the recording disk 4 can be prevented.

  The motor component manufacturing method by the motor component manufacturing apparatus 7 can adjust the relative position of the motor mounting portion 6111 with respect to the head assembly mounting portion 6112 with high accuracy, and is therefore limited in improving processing accuracy compared to cutting processing or the like. It is particularly suitable for the manufacture of motor parts including a base portion 611 formed by certain press working.

  In the manufacture of the motor component, the heated region 6114 is heated from the bottom surface side of the base portion 611 (that is, the side of the base portion 611 opposite to the side where the motor 1, the recording disk 4 and the access portion 63 are attached). Thus, particles or the like that may be generated during heating can be prevented from adhering to the mounting surface of the base portion 611 on the internal space 610 side of the recording disk drive device 60.

  In addition, since the heating of the heated region 6114 is performed by irradiation with a laser beam with high directivity, the minute region in the heated region 6114 can be heated with high positional accuracy. For this reason, the said manufacturing method is especially suitable for manufacture of the motor component in the comparatively small motor for which the high precision is requested | required with respect to the displacement amount of a displacement part. From the viewpoint of heating the heated region 6114 with high positional accuracy, the heated region 73 of the motor component manufacturing apparatus 7 may heat the heated region 6114 by irradiating an electron beam from the irradiation unit instead of the laser beam. .

  In the motor component manufacturing apparatus 7, the heated region 6114 is heated over the entire outer periphery of the displacement portion 6115 by the pulsed laser beam. In this embodiment mode, the laser beam is heated almost continuously in the circumferential direction around the central axis J1 in the heated region 6114. For example, the pulse interval is increased with respect to the rotation speed of the base portion 611. Thus, the heating of the heated region 6114 may be performed discontinuously in the circumferential direction over the entire outer periphery of the displacement portion 6115. In this way, by heating the entire outer periphery of the displacement portion 6115, the relative position of the first reference position 81 with respect to the second reference position 82 can be adjusted with higher accuracy.

  In the motor component manufacturing apparatus 7, the heated region 6114 is melted and deformed by laser beam irradiation, whereby the heated region 6114 can be largely deformed and the displacement portion 6115 can be largely displaced. Thereby, the relative position of the first reference position 81 with respect to the second reference position 82 can be adjusted efficiently.

  As described above, in the motor component manufacturing apparatus 7, the pulse interval of the pulsed laser beam (that is, the number of minute regions irradiated with the laser beam in the heated region 6114) is changed to the heated region 6114. The amount of displacement of the displacement unit 6115 is changed by changing the total amount of energy applied. The change in the total amount of energy applied to the heated region 6114 does not necessarily need to be changed by changing the pulse interval of the laser beam. For example, the intensity of the laser beam emitted from the heating unit 73 or the laser with respect to the heated region 6114 is changed. You may carry out by changing the irradiation angle of a beam. Further, during irradiation of the laser beam from the heating unit 73, the total energy amount may be changed by rotating the base unit 611 two or more times.

  The heating unit 73 does not necessarily need to emit a pulsed laser beam. For example, the heated region 6114 may be irradiated with a continuously emitted laser beam. In this case, the rotation speed of the base portion 611 by the rotation mechanism 74 is decreased to increase the irradiation time per unit length in the heated region 6114, and the heating time for the heated region 6114 is increased, thereby increasing the heating region 6114. The total energy amount given to the object may be changed.

  In the motor component manufacturing apparatus 7, the displacement amount of the displacement portion 6115 may be changed by changing the amount of energy per unit time applied to the heated region 6114 under the control of the control portion 76. For example, by reducing the intensity of the laser beam emitted from the heating unit 73 and deforming the heated region 6114 without melting, the deformation amount of the heated region 6114 is reduced and the displacement amount of the displacement unit 6115 is reduced. Can be small. In this case, since no melt mark is generated on the surface of the heated region 6114, the displacement portion 6115 can be displaced while preventing the appearance of the base portion 611 from being damaged. In particular, when plating or the like is performed on the heated region 6114, damage to the plating can be prevented.

  Furthermore, in the motor component manufacturing apparatus 7, the shape of the heated region 6114 and the relative position of the heated region 6114 with respect to the displacement unit 6115 are changed by the control of the control unit 76, thereby The amount of displacement may be changed. For example, the width of the heated region 6114 may be changed by changing the diameter of the laser beam emitted from the heating unit 73 on the base unit 611 by controlling the heating unit 73.

  Further, after rotating the base portion 611 by one turn while irradiating the laser beam to a position separated from the center of the displacement portion 6115 by a predetermined distance in the radial direction, the holding portion 71 is moved by the moving mechanism 75 to move the laser beam. The amount of displacement of the displacement part 6115 may be changed by moving the irradiation position in the direction away from the center of the displacement part 6115 and making the base part 611 make one more turn. In this case, the shape of the heated region 6114 is concentric with the center of the displacement portion 6115 as the center, and the relative position of the heated region 6114 with respect to the displacement portion 6115 is a virtual circumference located between the two concentric circles. Above.

  The description regarding the change in the amount of energy applied to the heated region 6114 and the change in the shape of the heated region 6114 is the same in the following embodiments. The following description regarding the arrangement of the displacement portion 6115 is the same in the second, third, and sixth embodiments described later.

  In the present embodiment, the displacement portion 6115 is provided in the motor attachment portion 6111 of the base portion 611. However, the displacement portion may be provided in the access portion attachment portion to which the access portion 63 is attached. For example, the displacement part and the first reference position may be provided in the head assembly attachment part 6112 of the access part attachment part, and the second reference position 82 may be provided in the motor attachment part 6111. In this case, a laser beam is applied to the base portion 611 that rotates about the central axis J2 of the head assembly attachment portion 6112 (that is, the displacement portion central axis passing through the center of the displacement portion), and is set on the outer periphery of the displacement portion. When the heated region is heated, the displacement portion is displaced to the opposite side to the heating side in the central axis J2 direction (that is, the central axis J1 direction of the motor mounting portion 6111), and the motor for the head assembly mounting portion 6112 is The relative position of the attachment portion 6111 is adjusted with high accuracy. As a result, the relative position of the recording disk 4 attached to the motor 1 with respect to the head 6311 is adjusted with high accuracy.

  Further, the displacement portion and the first reference position may be provided in the lamp attachment portion 6113 of the access portion attachment portion, and the second reference position 82 may be provided in the motor attachment portion 6111. In this case, in the base portion 611 that rotates about the displacement portion central axis that passes through the center of the displacement portion and faces the central axis J1, the heated region set on the outer periphery of the displacement portion is heated, and the displacement portion center The relative position of the motor mounting portion 6111 with respect to the lamp mounting portion 6113 in the axial direction (that is, the central axis J1 direction) is adjusted with high accuracy. As a result, the relative position of the head 6311 guided to the recording disk 4 on the motor 1 by the lamp 632 with respect to the recording disk 4 is adjusted with high accuracy.

  In the manufacture of the base portion 611, displacement portions may be provided on both the head assembly attachment portion 6112 and the lamp attachment portion 6113. In this case, the heated regions around both displacement portions are heated, and both displacement portions are displaced in the direction of the central axis J1. Further, the head assembly mounting portion 6112 and / or the lamp mounting portion 6113 and the motor mounting portion 6111 are heated and displaced in the direction of the central axis J1, so that the relative position of the motor mounting portion 6111 with respect to the access portion mounting portion becomes high. The accuracy may be adjusted.

  Next, the manufacture of the motor component of the recording disk drive apparatus according to the second embodiment of the present invention will be described. The configuration of the motor component (that is, the base portion 611) according to the second embodiment is the same as that in FIGS. 4 and 6, and the same reference numerals are given in the following description.

  FIG. 10 is a diagram showing a configuration of a motor component manufacturing apparatus 7a used for manufacturing the base portion 611 that is a motor component according to the second embodiment. In the motor component manufacturing apparatus 7a, a pressing portion 77 that presses a predetermined portion of the base portion 611 is provided. The other structure of the motor component manufacturing apparatus 7a is the same as that of FIG. The flow of manufacturing the base portion 611 according to the second embodiment is substantially the same as the flow of manufacturing the base portion according to the first embodiment (see FIG. 9). In the motor component manufacturing apparatus 7 a, the pressing unit 77 rotates together with the holding unit 71 and the base unit 611 held by the holding unit 71 by the rotation mechanism 74.

  In the manufacture of the base portion 611 according to the second embodiment, in step S15 shown in FIG. 9, the displacement portion 6115 (see FIG. 6) is moved to the heating side (ie, the base) with respect to the central axis J1 direction by the cylindrical pressing portion 77. The base portion 611 is rotated by the rotating mechanism 74 together with the holding portion 71 and the pressing portion 77 while pressing from the bottom surface side of the portion 611. In this state, the pulsed laser beam is irradiated from the heating unit 73 to the heated region 6114 (see FIG. 6), whereby the displacement unit 6115 is displaced to the side opposite to the heating side and the central axis J1. The relative position of the first reference position 81 in the direction with respect to the second reference position 82 (see FIG. 4) can be adjusted with high accuracy. As a result, the relative position of the recording disk 4 attached to the motor 1 with respect to the head 6311 (see FIG. 1) is adjusted with high accuracy, and access failure of the head 6311 with respect to the recording disk 4 can be prevented.

  In the manufacture of the motor component according to the second embodiment, in particular, the total energy amount applied to the heated region 6114 is changed by pressing the displacement portion 6115 in parallel with the heating of the heated region 6114. Without doing so, the amount of displacement of the displacement portion 6115 can be increased compared to the case of no pressing. That is, in the manufacture of the motor component according to the second embodiment, the relative position of the first reference position 81 with respect to the second reference position 82 in the direction of the central axis J1 can be adjusted efficiently.

  In the motor component manufacturing apparatus 7a, instead of the columnar pressing portion 77, a cylindrical pressing portion having an inner diameter larger than the outer diameter of the heated region 6114 may be provided. In this case, in parallel with the heating of the heated region 6114, the annular portion outside the heated region 6114 of the base portion 611 is pressed from the opposite side to the heated side by the pressing portion, so that the center is the same as above. The relative position of the first reference position 81 with respect to the second reference position 82 in the axis J1 direction can be adjusted efficiently and with high accuracy.

  Next, the manufacture of the motor component of the recording disk drive apparatus according to the third embodiment of the present invention will be described. The configuration of the recording disk drive apparatus according to the third embodiment is the same as that shown in FIGS. 1 to 4 and FIG. 6, and the same reference numerals are used in the following description.

  FIG. 11 is a longitudinal sectional view showing a motor component 600 according to the third embodiment, and FIG. 12 is a plan view of the motor component 600. In the present embodiment, unlike the first and second embodiments, the base portion 611 and the motor 1 fixed to the base portion 611 correspond to motor components. 11 and 12, a dummy disk 4a to be described later attached to the motor component 600 and a clamp 621 for fixing the dummy disk 4a are also drawn. In the motor component 600, the motor attachment portion 6111 of the base portion 611 and the motor 1 can be collectively regarded as a recording disc attachment portion to which the recording disc 4 (see FIG. 1) is directly attached.

  FIG. 13 is a diagram illustrating a configuration of a motor component manufacturing apparatus 7 b used for manufacturing the motor component 600. The motor component manufacturing apparatus 7b is different from the motor part manufacturing apparatus 7 shown in FIG. 5 except that the base portion 611 to which the motor 1 is attached is held and the measurement position on the motor component 600 by the measurement unit 72 is different. It is the same.

  FIG. 14 is a diagram showing a flow of manufacturing the motor component 600. When the motor component 600 is manufactured, first, similarly to the first embodiment, the base portion 611 is formed by press working (step S21). Subsequently, the motor 1 is fixed to the motor mounting portion 6111 of the base portion 611 shown in FIG. 11 from the mounting surface side (step S22), and further, the same as the recording disk 4 (see FIG. 1) on the rotor hub 31 of the motor 1. A dummy disk 4a which is a disk member made of a material and having the same shape as the recording disk 4 is attached by the clamper 621 (step S23).

  Next, the motor component 600 is held by the holding portion 71 of the motor component manufacturing apparatus 7b shown in FIG. 13 with the mounting surface of the base portion 611 facing upward (that is, the measuring portion 72 side) (step S24). Is driven at the rated output, and the dummy disk 4a rotates (step S25).

  As shown in FIG. 12, in the motor component 600, the first reference positions 81 arranged at the pitch in the circumferential direction around the central axis J1 are provided on the dummy disk 4a. In the motor component manufacturing apparatus 7b shown in FIG. 13, during the driving of the motor 1, the holding unit 71 is moved relative to the measuring unit 72 by the moving mechanism 75, and the measuring unit 72, the first reference position 81, and the second reference position are moved. The distance between each of the first reference position 81 and the third reference position 83 (see FIG. 12) is sequentially measured, and the relative position of the first reference position 81 with respect to the second reference position 82 is obtained (step S26).

  When the measurement of the relative position of the first reference position 81 with respect to the second reference position 82 is completed, the rotation of the dummy disk 4a by the motor 1 is stopped (step S27). The output from the measurement unit 72 is sent to the control unit 76, and when the measurement relative position is compared with the design relative position and the measurement relative position is within the allowable range of the design relative position, the motor component 600 is manufactured. The process ends (step S28).

  On the other hand, when the measurement relative position is outside the allowable range of the design relative position, the number of shots per unit time of the pulsed laser beam emitted from the heating unit 73 (that is, the pulse) based on the relative positional deviation amount. Interval) is set. Then, the motor component 600 is rotated about the central axis J1 by the rotation mechanism 74, and the heated region 6114 set on the outer periphery of the displacement portion 6115 of the motor mounting portion 6111 on the bottom surface side of the base portion 611 (see FIG. 6). The first reference position 81 on the motor 1, the dummy disk 4a, and the dummy disk 4a is displaced relative to the heating side in the direction of the central axis J1 together with the displacement portion 6115. Displace by the amount. Thereby, the relative position of the first reference position 81 with respect to the second reference position 82 in the direction of the central axis J1 is adjusted to be within the allowable range of the design relative position, and the manufacture of the motor component 600 is finished (step S29).

  When the manufacture of the motor component 600 is completed, the dummy disk 4a is removed from the motor 1, and the head assembly attachment portion 6112 and the lamp attachment portion 6113 of the base portion 611 shown by parallel oblique lines in FIG. A head assembly 631 and a lamp 632 are attached. Further, after the recording disk 4 is attached to the motor 1, the lid member 612 is joined to the base portion 611, and the manufacture of the recording disk drive device 60 is completed.

  In the manufacture of the motor component 600 according to the third embodiment, the first reference in the direction of the central axis J1 is obtained by displacing the displacement portion 6115 by heating the periphery of the displacement portion 6115, as in the first embodiment. The relative position of the position 81 with respect to the second reference position 82 can be adjusted with high accuracy. As a result, the relative position of the recording disk 4 (see FIG. 1) attached to the motor 1 with respect to the head 6311 is adjusted with high accuracy, and an access failure of the head 6311 with respect to the recording disk 4 can be prevented.

  In the manufacture of the motor component 600, particularly, the relative position is measured after the motor 1 is fixed to the base portion 611. Therefore, as compared with the manufacture of the motor component according to the first embodiment, the head assembly mounting portion 6112. The relative position of the motor 1 can be adjusted with higher accuracy, including the amount of deviation when the motor 1 is attached. On the other hand, in the first embodiment, only the base portion 611 is held in the motor component manufacturing apparatus 7 (see FIG. 5), and the relative position of the first reference position 81 with respect to the second reference position 82 is adjusted. It is possible to easily handle the motor component when adjusting the relative position.

  In manufacturing the motor component 600 according to the third embodiment, the first reference position 81 is provided on the dummy disk 4a, so that the rotor hub in a state where the recording disk 4 (see FIG. 1) is attached to the motor 1 is provided. The relative position of the first reference position 81 with respect to the second reference position 82 can be adjusted with higher accuracy in consideration of the bending of 31 and the inclination of the disk mounting portion 314 (see FIG. 11). Furthermore, by measuring the relative position of the first reference position 81 with respect to the second reference position 82 while the motor 1 is being driven, the relative position is further increased in consideration of the flying height of the rotor hub 31 during rotation. The accuracy can be adjusted.

  From the viewpoint of adjusting the relative position of the recording disk 4 with respect to the head 6311 (see FIG. 1) with high precision to prevent access failure, the head 6311 of the recording disk 4 is only in the passing area of the head 6311 on the recording disk 4. The relative position with respect to may be adjusted. In this case, in the manufacture of the motor component 600, one first reference position 81 is provided in the passage area on the dummy disk 4a, and the relative position with respect to the second reference position 82 is measured only for the first reference position 81. .

  In the manufacture of the motor component 600, only the rotor hub 31 is rotated without attaching the dummy disk 4 a to the motor 1, and the second reference position 82 of the first reference position 81 provided on the disk mounting portion 314 or the like on the rotor hub 31. The relative position with respect to may be measured. Even in this case, if the bending of the rotor hub 31 and the inclination of the disk mounting portion 314 when the recording disk 4 is attached to the motor 1 are obtained in advance by experiments or simulations, the dummy disk 4a is attached. The relative position can be measured with the same high accuracy as the measurement in.

  Next, the manufacture of motor components for the recording disk drive apparatus according to the fourth embodiment of the present invention will be described. The configuration of the recording disk drive apparatus according to the fourth embodiment is the same as that of FIGS. 1 to 4 and FIG. 6, and the same reference numerals are given in the following description. FIG. 15 is a plan view of a motor component 600 according to the fourth embodiment. In the present embodiment, as in the third embodiment, the base portion 611 and the motor 1 fixed to the base portion 611 correspond to motor components. The configuration of the motor component 600 is the same as that of the motor component 600 shown in FIGS. 11 and 12, and in this embodiment, no dummy disk is attached to the motor 1 when the motor component 600 is manufactured.

  FIG. 16 is a diagram showing a configuration of a motor component manufacturing apparatus 7c used for manufacturing a motor component according to the fourth embodiment. As shown in FIG. 16, in the motor component manufacturing apparatus 7 c, a heating unit 73 that irradiates the motor component 600 with a laser beam is disposed on the same side as the measurement unit 72 with respect to the holding unit 71. Other configurations are substantially the same as those of the motor component manufacturing apparatus 7 shown in FIG. 5, and the same reference numerals are given in the following description.

  FIG. 17 is a diagram illustrating a flow of manufacturing the motor component 600 according to the fourth embodiment. When the motor component 600 is manufactured, first, similarly to the first embodiment, the motor 1 is fixed to the base portion 611 formed by press working (steps S31 and S32). Subsequently, the motor component 600 is held by the holding unit 71 of the motor component manufacturing apparatus 7c shown in FIG. 16, and the motor 1 is driven at the rated output (steps S33 and S34).

  As shown in FIG. 15, in the motor component 600, the flat and substantially annular disk mounting portion 314 provided on the rotor hub 31 of the motor 1 is arranged at this pitch in the circumferential direction around the central axis J <b> 1. The first reference position 81 is provided. In the motor component manufacturing apparatus 7c shown in FIG. 16, the measurement unit 72 determines the relative position of the first reference position 81 with respect to the second reference position 82 while the motor 1 is being driven (step S35).

  When the measurement of the relative position of the first reference position 81 with respect to the second reference position 82 is completed, the motor 1 is stopped and the output from the measurement unit 72 is sent to the control unit 76, and the measurement relative position and the design relative position are determined. Are compared and the measured relative position is within the allowable range of the design relative position, the manufacture of the motor component 600 ends (steps S36 and S37).

  On the other hand, when the measurement relative position is outside the allowable range of the design relative position, the number of shots per unit time of the pulsed laser beam emitted from the heating unit 73 (that is, the pulse) based on the relative positional deviation amount. Interval) is set. Then, the motor component 600 is rotated by the rotating mechanism 74 (or the motor 1 is driven and the rotor hub 31 is rotated), and a circle set on the upper surface of the convex portion 312 disposed on the inner periphery of the disk mounting portion 314. By irradiating the annular heated region 6114a (shown with parallel oblique lines in FIG. 15) from the side where the recording disk 4 (see FIG. 1) in the direction of the central axis J1 is attached, The heated region 6114a is heated and deformed over the entire circumference.

  FIG. 18 is an enlarged longitudinal sectional view showing the vicinity of the disk mounting portion 314 of the rotor hub 31. In the motor component manufacturing apparatus 7c shown in FIG. 16, the outer peripheral portion of the rotor hub 31 with respect to the heated region 6114a is indicated by a two-dot chain line in FIG. 18 due to the deformation of the heated region 6114a (see FIG. 15). Is displaced to the heating side (that is, the side on which the recording disk 4 is attached), whereby the first reference position 81 (see FIG. 15) provided in the disk mounting portion 314 is a disk mounting serving as a displacement portion. Along with the portion 314, it is displaced to the heating side by the relative displacement amount with respect to the central axis J1 direction. As a result, the relative position of the first reference position 81 shown in FIG. 15 with respect to the second reference position 82 in the direction of the central axis J1 is adjusted to be within the allowable range of the design relative position, and the manufacture of the motor component 600 is completed (step). S38). In FIG. 18, for the convenience of illustration, the displacement amount of the disk mounting portion 314 is drawn larger than the actual amount.

  When the manufacture of the motor component 600 is completed, the head assembly 631 and the lamp 632 shown in FIG. 1 are attached to the base portion 611, the recording disk 4 is attached to the motor 1, and then the lid member 612 is joined to the base portion 611. The manufacture of the recording disk drive device 60 ends.

  In the manufacture of the motor component 600 according to the fourth embodiment, the disc mounting portion 314 is displaced by heating the heated region 6114a set on the inner periphery of the disc mounting portion 314, which is a displacement portion. As in the first embodiment, the relative position of the first reference position 81 with respect to the second reference position 82 in the direction of the central axis J1 can be adjusted with high accuracy. As a result, the relative position of the recording disk 4 mounted on the disk mounting portion 314 of the motor 1 with respect to the head 6311 can be adjusted with high accuracy.

  Further, in the manufacture of the motor component 600, the heating of the heated region 6114a is performed over the entire inner periphery of the disk mounting portion 314, so that the relative position of the first reference position 81 to the second reference position 82 is further increased. The accuracy can be adjusted. Furthermore, the relative position is adjusted by directly displacing the disk mounting portion 314 on which the recording disk 4 (see FIG. 1) is mounted, so that the other of the recording disk drive device 60 (see FIG. 1) is adjusted. The relative position of the recording disk 4 with respect to the head assembly mounting portion 6112 can be adjusted with high accuracy without changing the position of the configuration.

  In manufacturing the motor component 600, the first reference position 81 is not necessarily provided on the disk mounting portion 314, and may be provided on the outer peripheral side of the heated region 6114a of the convex portion 312, for example. Further, a dummy disk or the like used in the motor component manufacturing method according to the third embodiment may be attached to the rotor hub 31 and the first reference position 81 may be provided on the dummy disk.

  Next, the manufacture of motor components for the recording disk drive apparatus according to the fifth embodiment of the present invention will be described. The configuration of the recording disk drive apparatus according to the fifth embodiment is the same as that shown in FIGS. 1 to 4 and FIG. 6, and the same reference numerals are used in the following description. In the present embodiment, as in the third embodiment, the base portion 611 and the motor 1 (see FIG. 11) fixed to the base portion 611 correspond to motor components.

  FIG. 19 is a longitudinal sectional view showing a part of the rotor hub 31a in the motor of the motor component according to the fifth embodiment. The configuration of the motor component according to the fifth embodiment is the same as that of the motor component 600 shown in FIG. 15 except that the shape in the vicinity of the disk mounting portion 314a of the rotor hub 31a is different. As shown in FIG. 19, in the rotor hub 31a, at the upper end of a substantially cylindrical cylindrical portion 313 protruding downward on the outer edge of the convex portion 312, a substantially annular portion with a substantially flat plate shape and centering on the central axis J1 is provided. A disk mounting portion 314a on which the recording disk 4 (see FIG. 1) is mounted is provided.

  The flow of manufacturing the motor component according to the fifth embodiment is substantially the same as the flow of manufacturing the motor component according to the fourth embodiment (see FIG. 17). In the manufacture of the motor component according to the fifth embodiment, in step S38 shown in FIG. 17, a laser beam is emitted in a direction from the side opposite to the central axis J1 of the cylindrical portion 313 of the rotor hub 31 toward the central axis J1, By irradiating the annular heated region 6114b set on the outer surface 3131 of the cylindrical portion 313 extending from the disk mounting portion 314a to the base portion 611 side on the outer periphery of the disk mounting portion 314a, The heated region 6114b is heated and deformed over the entire circumference of the outer surface 3131.

  As a result, the upper part (that is, the disk mounting part 314a side) and the lower part of the heated part 6114b of the cylindrical part 313 are warped to the heating side (that is, the side opposite to the central axis J1). The first reference position 81 (see FIG. 15) provided on the disk mounting portion 314a is positioned relative to the lower side (that is, the base portion 611 side) with respect to the central axis J1 direction together with the disk mounting portion 314a that is the displacement portion. It is displaced by the amount of deviation.

  In FIG. 19, the shape after displacement of the part in the vicinity of the disk mounting portion 314a is indicated by a two-dot chain line. As shown in FIG. 19, the relative position of the first reference position 81 with respect to the second reference position 82 (see FIG. 15) relative to the center axis J1 direction is changed by the disc mounting portion 314a being displaced downward in FIG. It is adjusted to be within the allowable range of the design relative position. In FIG. 19, for the convenience of illustration, the displacement amount of the disk mounting portion 314a is drawn larger than the actual amount.

  In the manufacture of the motor component according to the fifth embodiment, by heating the heated region 6114b set on the outer surface 3131 of the cylindrical portion 313 on the outer periphery of the disc mounting portion 314a which is a displacement portion in the disc mounting portion 314a. By displacing the disk mounting portion 314a, the relative position of the first reference position 81 with respect to the second reference position 82 in the direction of the central axis J1 can be adjusted with high accuracy, as in the first embodiment. As a result, the relative position of the recording disk 4 mounted on the disk mounting portion 314a with respect to the head 6311 (see FIG. 1) can be adjusted with high accuracy.

  In the manufacture of the motor component according to the fifth embodiment, the heating of the heated region 6114b is performed over the entire circumference of the outer surface 3131 of the cylindrical portion 313, so that the second reference of the first reference position 81 is achieved. The relative position with respect to the position 82 can be adjusted with higher accuracy.

  In the manufacture of the motor component according to the present embodiment, the first reference position 81 does not necessarily have to be provided on the disk mounting portion 314. For example, the first reference position 81 is used in the motor component manufacturing method according to the third embodiment. A dummy disk or the like may be attached to the rotor hub 31 and the first reference position 81 may be provided on the dummy disk.

  Next, the manufacture of motor components for the recording disk drive apparatus according to the sixth embodiment of the present invention will be described. In the present embodiment, as in the first and second embodiments, the base portion 611 corresponds to a motor component. The configuration of the motor component (that is, the base portion 611) according to the sixth embodiment is the same as that shown in FIGS. 4 and 6, and the same reference numerals are given in the following description.

  The flow of manufacturing the base portion 611 according to the sixth embodiment is substantially the same as the flow of manufacturing the base portion 611 according to the first embodiment (see FIG. 9). In the manufacture of the base portion 611 according to the sixth embodiment, in step S13 shown in FIG. 9, the relative position of the first reference position 81 with respect to the second reference position 82 shown in FIG. From the relative position of the reference position 81 to each third reference position 83, the inclination of the displacement portion 6115 shown in FIG. 6 with respect to the central axis J1 of the motor mounting portion 6111 is obtained.

  In step S15, the heating of the heated region 6114 is biased with respect to the circumferential direction around the central axis J1, thereby adjusting the relative position of the first reference position 81 to the second reference position 82. The inclination of the displacement portion 6115 with respect to the central axis J1 is also adjusted. The biased heating with respect to the heated region 6114 is caused by, for example, the base portion on the outer periphery of a portion located on the lower side (that is, the bottom surface side of the base portion 611) in the displacement portion 6115 with respect to the central axis J1 direction. This is performed by reducing the pulse interval of the laser beam applied to the bottom surface side of 611. In this way, by making the amount of energy applied to the outer periphery of the part larger than the amount of energy applied to the outer periphery of the other part, the part is positioned above the other part (that is, The inclination of the displacement portion 6115 can be adjusted with high accuracy by largely displacing the base portion 611 to the attachment surface side).

  The biased heating of the heated region 6114 is not necessarily performed by changing the pulse interval of the laser beam irradiated to the heated region 6114. For example, the intensity of the laser beam, the center of the displacement portion 6115, and the laser You may carry out by changing the distance between the irradiation positions of a beam.

  The inclination of the displacement unit 6115 with respect to the central axis J1 does not necessarily have to be obtained by measurement with respect to the three first reference positions 81. For example, an autocollimator is provided as the measurement unit 72 (see FIG. 5). The relative position of the first reference position 81 with respect to the second reference position 82 and the inclination of the displacement part 6115 may be obtained by measurement with respect to one first reference position 81 on the part 6115.

  The correction of the inclination of the displacement portion 6115 according to the present embodiment is not limited to the manufacture of motor components according to the first and second embodiments, but also in the manufacture of motor components according to the third to fifth embodiments. May be done.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited to the said embodiment, A various change is possible.

  In the base portion 611 according to the first embodiment, the first reference position 81, the second reference position 82, and the third reference position 83 may be provided on the bottom surface of the base portion 611. In this case, in the motor component manufacturing apparatus 7, the measuring unit 72 is disposed below the holding unit 71 in FIG. 5 (that is, on the same side as the heating unit 73 in the central axis J1).

  In the first embodiment, the relative position between the first reference position 81 and the second reference position 82 is obtained with reference to the third reference position 83, and then the first reference position 81 relative to the second reference position 82 is determined. Although the relative position is obtained, for example, the measurement at the third reference position 83 is omitted, and the relative position of the first reference position 81 with respect to the second reference position 82 is determined from the measurement results at the first reference position 81 and the second reference position 82. May be sought directly.

  In manufacturing the motor component according to the third embodiment, instead of the dummy disk 4a, the recording disk 4 may be attached to the motor 1 as a disk member, and the first reference position 81 may be provided on the recording disk 4. (The same applies to the fourth and fifth embodiments).

  In the manufacture of the motor component according to the above embodiment, the heating of the heated region does not necessarily have to be performed over the entire outer periphery or inner periphery of the displacement portion. For example, in the manufacture of the motor component according to the first to fifth embodiments, for example, the first reference position 81 with respect to the second reference position 82 can be used as long as the axis is symmetrical about the center axis of the displacement portion. In accordance with the accuracy required in the adjustment of the relative position, heating may be performed on three points arranged at a 120 ° pitch with the central axis of the displacement portion as the center.

  In the motor component manufacturing apparatus according to the above embodiment, the motor component may be held in the holding portion 71 with the mounting surface of the base portion 611 facing downward. Further, instead of the laser displacement meter, a capacitance-type non-contact displacement meter may be used as the measurement unit 72, or a contact displacement meter may be used.

  From the viewpoint of realizing heating with high positional accuracy in the heated region, the heating of the heated region is preferably performed by irradiation with a laser beam or an electron beam from the heating unit 73. For example, the heated region may be heated by infrared irradiation, a heater, high temperature gas, non-contact heating by a burner or electromagnetic induction, or heating by contact of a linear heat source to the heated region.

  The base part of the motor component according to the above-described embodiment is not necessarily formed by press working. For example, the above-described manufacturing method may be applied to the base part formed by cutting.

  The motor according to the above embodiment does not necessarily need to be a so-called inner rotor type in which the field magnet 32 is disposed inside the armature 24, and the field magnet 32 is disposed outside the armature 24. An outer rotor type may be used. As the bearing mechanism, for example, a so-called air dynamic pressure bearing using air as a working fluid may be used. Further, the bearing mechanism does not necessarily need to utilize fluid dynamic pressure, and may be a ball bearing, for example.

  The recording disk drive device 60 including the motor component according to the above embodiment can be used as a device for driving not only a magnetic disk but also other disk-shaped recording media such as an optical disk and a magneto-optical disk.

1 is a longitudinal sectional view of a recording disk drive device according to a first embodiment. It is a top view of a recording disk drive device. It is a longitudinal cross-sectional view of a motor. It is a top view of a base part. It is a figure which shows the structure of a motor component manufacturing apparatus. It is a bottom view of a base part. It is a longitudinal cross-sectional view of a base part. It is a figure which shows the relationship between the total energy amount given to a to-be-heated area | region, and the displacement amount of a displacement part. It is a figure which shows the flow of manufacture of a motor component. It is a figure which shows the structure of the motor component manufacturing apparatus which concerns on 2nd Embodiment. It is a longitudinal cross-sectional view of the motor component which concerns on 3rd Embodiment. It is a top view of a motor component. It is a figure which shows the structure of a motor component manufacturing apparatus. It is a figure which shows the flow of manufacture of a motor component. It is a top view of the motor component which concerns on 4th Embodiment. It is a figure which shows the structure of a motor component manufacturing apparatus. It is a figure which shows the flow of manufacture of a motor component. It is a longitudinal cross-sectional view which expands and shows the disk mounting part vicinity of a rotor hub. It is a longitudinal cross-sectional view which shows a part of rotor hub of the motor component which concerns on 5th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Motor 4 Recording disk 4a Dummy disk 7, 7a-7c Motor component manufacturing apparatus 31, 31a Rotor hub 60 Recording disk drive device 63 Access part 71 Holding part 72 Measuring part 73 Heating part 74 Rotating mechanism 75 Moving mechanism 76 Control part 81 1st Reference position 82 Second reference position 313 Cylindrical portion 314, 314a Disc placement portion 600 Motor part 611 Base portion 3131 External side surface 6111 Motor attachment portion 6112 Head assembly attachment portion 6113 Lamp attachment portion 6114, 6114a, 6114b Heated area 6115 Displacement portion J1, J2 central axis S11-S15, S21-S29, S31-S38 Step

Claims (29)

A motor component including a base portion to which an electric motor used for rotating a recording disk in a recording disk driving device is attached,
A recording disk mounting portion including a part of the plate-like base portion and to which the recording disk is directly or indirectly mounted;
An access portion mounting portion that includes a part of the base portion and to which an access portion that reads and / or writes information on the recording disk is mounted;
With
One side of the recording disk mounting portion in the central axis direction is a heated area set on the outer periphery of a substantially flat plate-like displacement portion provided on one of the base portions of the recording disk mounting portion and the access portion mounting portion. The first reference position provided on the one of the recording disk attachment portion and the access portion attachment portion is displaced together with the displacement portion to the side opposite to the heating side in the central axis direction by being heated and deformed. A motor component in which a relative position in the central axis direction of the first reference position with respect to a second reference position provided on the other of the recording disk attachment portion and the access portion attachment portion is adjusted. The motor component according to claim 1,
The motor component, wherein the heating of the heated region is performed over the entire outer periphery of the displacement portion. The motor component according to claim 1 or 2,
The motor component according to claim 1, wherein the heated area is heated from a side of the base portion opposite to a side on which the recording disk and the access portion are attached. A motor component including an electric motor used for rotating a recording disk in a recording disk driving device and a base portion to which the motor is attached,
A recording disk mounting portion including a part of a plate-like base portion and a motor and mounted with a recording disk;
An access portion mounting portion that includes a part of the base portion and to which an access portion that reads and / or writes information on the recording disk is mounted;
With
A heated area set on the inner periphery of a substantially flat and annular displacement portion provided on the rotor hub of the motor is heated and deformed from the recording disk mounting side in the central axis direction of the recording disk mounting section. Accordingly, the first reference position provided on the rotor hub is displaced together with the displacement portion toward the heating side with respect to the central axis direction, and the first reference position relative to the second reference position provided on the access portion attachment portion is changed. A motor component characterized in that a relative position in a central axis direction is adjusted. The motor component according to claim 4,
The motor component characterized in that heating of the heated area is performed over the entire inner circumference of the displacement portion. The motor component according to claim 4 or 5,
The motor component according to claim 1, wherein the displacement portion is a substantially annular disk mounting portion on which the recording disk of the motor is mounted. A motor component including an electric motor used for rotating a recording disk in a recording disk driving device and a base portion to which the motor is attached,
A recording disk mounting portion including a part of a plate-like base portion and a motor and mounted with a recording disk;
An access portion mounting portion that includes a part of the base portion and to which an access portion that reads and / or writes information on the recording disk is mounted;
With
A rotor hub of the motor,
A disc mounting portion on which the recording disc is placed, which is a substantially flat and annular displacement portion;
In the outer periphery of the disk mounting part, a cylindrical part extending from the disk mounting part to the base part,
With
By heating and deforming the annular heated region set on the outer surface of the cylindrical portion, the first reference position provided on the disc mounting portion is set to the base with respect to the central axis direction of the recording disc mounting portion. A motor component characterized in that a relative position in the central axis direction of the first reference position with respect to a second reference position provided in the access portion mounting portion is adjusted. The motor component according to claim 7,
The motor component, wherein the heating of the heated region is performed over the entire circumference of the cylindrical portion. The motor component according to any one of claims 1 to 8,
The motor part, wherein the base portion is formed by press working. The motor component according to any one of claims 1 to 9,
The motor is characterized in that the inclination of the displacement portion with respect to the central axis is also adjusted because the heating of the heated area is biased with respect to the circumferential direction around the central axis of the recording disk mounting portion. parts. A method of manufacturing a motor component including a base portion to which an electric motor used for rotating a recording disk in a recording disk drive device is attached,
a) a recording disk mounting part including a part of a plate-like base part and to which a recording disk is directly or indirectly mounted; and a reading and / or reading of information from the recording disk including a part of the base part Holding a motor component having an access portion mounting portion to which an access portion for writing is attached;
b) The other of the recording disk mounting part or the disk member mounted on the recording disk mounting part and the first reference position provided on one of the access part mounting parts with respect to the central axis direction of the recording disk mounting part Measuring a relative position with respect to a second reference position provided in
c) A heated area set on an outer periphery of a substantially flat displacement portion provided on one of the base portions of the recording disk attachment portion and the access portion attachment portion, based on the relative position. A step of adjusting the relative position by displacing the first reference position together with the displacement portion to the opposite side of the heating side with respect to the central axis direction by heating and deforming from one side of the direction;
A method for manufacturing a motor component, comprising: It is a manufacturing method of the motor components according to claim 11,
The recording disk mounting portion further includes a motor that is fixed to the base portion and to which the recording disk is directly mounted,
A step of driving the motor between the step a) and the step b);
The method for manufacturing a motor component, wherein the measurement of the relative position in the step b) is performed while the motor is being driven. A method of manufacturing a motor component according to claim 11 or 12,
In parallel with the step c), the displacement portion is pressed from the heating side with respect to the central axis direction, or a portion outside the heated region is pressed from the side opposite to the heating side with respect to the central axis direction. A method for manufacturing a motor component, further comprising the step of: A method of manufacturing a motor part including an electric motor used for rotating a recording disk in a recording disk driving device and a base portion to which the motor is attached,
a) a recording disk mounting portion including a part of a plate-like base portion and a motor and mounting a recording disk, and an access including a portion of the base portion and reading and / or writing information to the recording disk Holding a motor component having an access portion attachment portion to which the portion is attached;
b) Relative to the second reference position provided at the access portion attachment portion of the first reference position provided on the rotor hub of the motor or the disk member attached to the rotor hub with respect to the central axis direction of the recording disc attachment portion. Measuring the position;
c) A heated region set on the inner periphery of a substantially flat and annular displacement portion provided on the rotor hub is heated and deformed based on the relative position from the side where the recording disk is attached in the central axis direction. By adjusting the relative position by displacing the first reference position together with the displacement portion to the heating side with respect to the central axis direction,
A method for manufacturing a motor component, comprising: An electric motor used for rotating a recording disk in a recording disk driving device and a method of manufacturing a motor part including a base portion to which the motor is attached,
a) a recording disk mounting portion including a part of a plate-like base portion and a motor and mounting a recording disk, and an access including a portion of the base portion and reading and / or writing information to the recording disk Holding a motor component having an access portion attachment portion to which the portion is attached;
b) With respect to the central axis direction of the recording disk mounting portion, the access of the first reference position provided on a disk mounting portion on which the recording disk of the rotor hub of the motor is mounted or a disk member mounted on the rotor hub. Measuring a relative position with respect to a second reference position provided in the part mounting portion;
c) An annular heated region set on the outer surface of the cylindrical portion extending from the disk mounting portion to the base portion on the outer periphery of the disk mounting portion which is a substantially flat plate-like and substantially annular displacement portion. Adjusting the relative position of the first reference position with respect to the second reference position in the central axis direction by displacing the first reference position toward the base by heating and deforming;
A method for manufacturing a motor component, comprising: A method of manufacturing a motor component according to claim 14 or 15,
A step of driving the motor between the step a) and the step b);
The method for manufacturing a motor component, wherein the measurement of the relative position in the step b) is performed while the motor is being driven. A method of manufacturing a motor component according to any one of claims 11 to 16,
The method of manufacturing a motor component, wherein the heating of the heated region in the step c) is performed by irradiation with a laser beam or an electron beam. A method of manufacturing a motor component according to any one of claims 11 to 17,
A method for manufacturing a motor component, wherein the heated region is melted and deformed in the step c). A method of manufacturing a motor component according to any one of claims 11 to 17,
A method of manufacturing a motor component, wherein the heated region is deformed without melting in the step c). A method of manufacturing a motor component according to any one of claims 11 to 19,
In the step c), the displacement amount of the displacement portion in the central axis direction is changed by changing the shape of the heated region or the relative position of the heated region with respect to the displacement portion. Manufacturing method of motor parts. A method of manufacturing a motor component according to any one of claims 11 to 19,
In the step c), the amount of displacement in the central axis direction of the displacement portion is changed by changing the total amount of energy applied to the heated region or the amount of energy per unit time. A method for manufacturing a motor component. The method of manufacturing a motor component according to claim 21,
In the step c), pulsed heating is sequentially performed on a plurality of minute regions arranged in an annular shape,
A method of manufacturing a motor component, wherein the amount of displacement of the displacement portion in the central axis direction is changed by changing the number of the plurality of minute regions. A motor part manufacturing apparatus used for manufacturing a motor part including a base portion to which an electric motor used for rotating a recording disk in a recording disk driving device is attached,
A recording disk mounting part including a part of a plate-like base part and to which a recording disk is mounted directly or indirectly, and reading and / or writing of information to the recording disk including a part of the base part A holding part for holding a motor component including an access part attaching part to which an access part to be attached is attached;
With respect to the central axis direction of the recording disk mounting portion, the recording disk mounting portion or the disk member mounted on the recording disk mounting portion and the other one of the first reference positions provided on one of the access portion mounting portions A measurement unit for measuring a relative position with respect to the second reference position obtained;
Based on the output from the measurement unit, the center of the heated area set on the outer periphery of a substantially flat displacement portion provided on the base part of one of the recording disk attachment part and the access part attachment part A heating unit that adjusts the relative position by displacing the first reference position together with the displacement unit to the opposite side of the heating side with respect to the central axis direction by heating and deforming from one side in the axial direction;
A motor part manufacturing apparatus comprising: A motor component manufacturing apparatus used for manufacturing a motor component including an electric motor used for rotating a recording disk in a recording disk driving device and a base portion to which the motor is attached,
A recording disk mounting portion including a part of a plate-like base portion and a motor and mounting a recording disk; and an access portion including a part of the base portion and reading and / or writing information on the recording disk. A holding portion for holding a motor component including an access portion attaching portion to be attached;
The relative position of the first reference position provided on the rotor hub of the motor or the disk member attached to the rotor hub with respect to the second reference position provided on the access part attachment part with respect to the central axis direction of the recording disk attachment part. A measuring unit to measure,
A heated area set on the inner periphery of a substantially flat and annular displacement portion provided in the rotor hub is heated based on an output from the measurement unit from a side where the recording disk is attached in the central axis direction. A heating unit that adjusts the relative position by displacing the first reference position together with the displacement unit to the heating side with respect to the central axis direction by deforming;
A motor part manufacturing apparatus comprising: A motor component manufacturing apparatus used for manufacturing a motor component including an electric motor used for rotating a recording disk in a recording disk driving device and a base portion to which the motor is attached,
A recording disk mounting portion including a part of a plate-like base portion and a motor and mounting a recording disk; and an access portion including a part of the base portion and reading and / or writing information on the recording disk. A holding portion for holding a motor component including an access portion attaching portion to be attached;
With respect to the direction of the central axis of the recording disk mounting portion, the access portion mounting at a first reference position provided on a disk mounting portion on which the recording disk of the rotor hub of the motor is mounted or a disk member mounted on the rotor hub A measurement unit for measuring a relative position with respect to a second reference position provided in the unit;
An annular heated region set on the outer surface of a cylindrical portion extending from the disk mounting portion to the base portion is heated on the outer periphery of the disk mounting portion, which is a substantially flat plate-shaped and substantially annular displacement portion. A heating unit that adjusts the relative position of the first reference position relative to the second reference position with respect to the central axis direction by displacing the first reference position toward the base part.
A motor part manufacturing apparatus comprising: The motor component manufacturing apparatus according to any one of claims 23 to 25,
The motor component manufacturing apparatus, wherein the heating unit is an irradiation unit that irradiates the heated region with a laser beam or an electron beam. The motor part manufacturing apparatus according to claim 26,
A rotating mechanism that rotates the holding portion around the central axis of the displacement portion that passes through the center of the displacement portion of the motor component and faces the central axis direction;
A moving mechanism for moving the heating unit relative to the holding unit;
An apparatus for manufacturing a motor component, further comprising: The motor component manufacturing apparatus according to any one of claims 23 to 27,
By controlling the heating unit based on the output from the measuring unit, the shape of the heated region or the relative position of the heated region with respect to the displacing unit is changed, thereby the central axis direction of the displacing unit A motor component manufacturing apparatus, further comprising a control unit that changes a displacement amount of the motor component. The motor component manufacturing apparatus according to any one of claims 23 to 27,
By controlling the heating unit based on the output from the measurement unit, by changing the total energy amount or energy amount per unit time applied to the heated region, the center of the displacement unit A motor component manufacturing apparatus, further comprising a control unit that changes an amount of axial displacement.

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