JP2002015410A - Method and device for adjusting load of magnetic head device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for adjusting the load of a magnetic head device on a magnetic disk at the stage of HGA, HAA, or HAS. SOLUTION: The load of a magnetic head device 95 on a magnetic disk is adjusted. The magnetic head device 95 includes a head support 1 and a magnetic head 2. The head support 1 includes a flexible body 12 and a load beam 11. One end of the load beam 11 is free. One side of the flexible body 12 is connected to the free end of the load beam 11. The magnetic head 2 is attached to the flexible body 12. Bending for a load adjustment is added to the load beam 11, and a bending area 6 is irradiated with a laser LA.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for adjusting the load of a flying magnetic head device.

[0002]

2. Description of the Related Art In a floating magnetic disk drive, a structure for supporting a magnetic head is a head having a magnetic head mounted on a gimbal. Gimbal assembly (Head Gimbal Assembl)
y, hereinafter referred to as HGA), a head having an HGA attached to an arm. Head Arm Assembly (hereinafter H)
AA), and a head in which a plurality of HAAs are stacked. Stack Assembly (H)
SA).

[0003] In a floating type magnetic disk drive, a basic requirement is that a load applied from a magnetic head to a magnetic disk is set to a predetermined value in order to achieve high density recording / reproducing and stable flying characteristics. Become.

Conventionally, the load was corrected to a predetermined value at the stage of HGA. However, recently, the finish standards for HAA and HSA have become narrow and strict, and even if the load is adjusted to a value within the standards at the HGA stage,
In the process from to HAA and further to HSA,
The load may deviate from the predetermined value, and may not be within the standard at the stage of HAA and HSA.

[0005] At the stage of HAA and HSA, if the load is not within a predetermined angle and the product is treated as a defective product, it is necessary to use an expensive magnetic head manufactured through a complicated process, and an expensive gimbal and load beam. Disposal, and even HGA,
It is not allowed because it means to eliminate the cost of assembling HAA and HSA.

[0006] Conventionally, at the stage of HGA, the load deviation has been corrected by mechanical pressing using a pressing jig. In the adjusting method using this pressing jig, the load beam is bent by pressing one point on the axis of the load beam as a fulcrum and pressing the other point, thereby adjusting the load of the magnetic head.

However, even if a large bending displacement is applied to the load beam by mechanical pressing, the bending returns to the original state due to the restoring force of the load beam. This means that the bending must be performed with a bending displacement that is significantly larger than the bending displacement that applies a predetermined load. If other components exist within this large bending displacement, the necessary bending displacement cannot be obtained.

[0008]

An object of the present invention is to provide an HG
An object of the present invention is to provide a load adjustment method and apparatus for a magnetic head device which can secure a large load change amount by giving only a small bending displacement at the stage A.

Another object of the present invention is to provide a method and apparatus for adjusting the load at the stage of HAA.

Another object of the present invention is to provide a method and an apparatus for adjusting an HAA which can secure a required amount of bending displacement by giving only a small bending displacement to an arm piece.

Yet another object of the present invention is to provide a method and apparatus for adjusting the load at the stage of HSA.

Still another object of the present invention is to provide an adjusting method and an apparatus which can secure a necessary amount of bending displacement by giving a small bending displacement to an arm piece constituting a block at the stage of HSA. It is.

[0013]

In order to solve the above-mentioned problems, a load adjusting method according to the present invention is applied to adjust the load of a magnetic head device in an HGA stage. The magnetic head device includes a head support and a magnetic head. The head support includes a flexible body and a load beam.

One end of the load beam is a free end, and one surface of the flexible body is connected to the free end of the load beam. The magnetic head is attached to the other surface of the flexible body.

The load beam is bent vertically to adjust the load. When bending for load adjustment is applied to the load beam, a stress corresponding to the bending is generated in the load beam. In the present invention, the laser is irradiated to the bending region of the load beam. Thereby, the stress in the bending region irradiated with the laser is released by the heat accompanying the laser irradiation. For this reason, in the bending region that has been subjected to this laser irradiation,
The amount of restoration of the load beam is reduced, and the bending is performed at an angle close to the added bending angle. This means that a large bending angle can be given to the load beam even if the amount of bending change given to the load beam is small. Therefore, a large load change can be ensured only by bending the load beam at a small bending angle.

The present invention further discloses an adjustment method applied to HAA. The HAA includes an arm piece, a head support, and a magnetic head. One end of the head support is fixed to the arm piece. The magnetic head is attached to the other end of the head support.

In the HAA configured as described above, a bend is applied to the arm piece or the head support, and a laser is irradiated to the bending area of the arm piece or the head support.

When a bend is applied to the arm piece or the head support, a stress corresponding to the bending is generated in the arm piece or the head support. In the present invention, a laser is applied to the bending region. Thereby, the stress in the bending region irradiated with the laser is released by the heat accompanying the laser irradiation. For this reason, in the bending area which has been subjected to the laser irradiation, the restoration amount of the arm piece or the head support is small, and the bending is performed at an angle close to the added bending angle. This means that even if the amount of bending change given to the arm piece or the head support is small,
This means that a large bending angle can be given to the arm piece or the head support. Thus, it is only necessary to bend the arm piece or the head support at a small bending angle.

The present invention further discloses a load adjusting method applied to the HSA. The HSA includes a block, a head support, and a magnetic head.

The block has a plurality of arm pieces, and the plurality of arm pieces are sequentially arranged at intervals. The head support is provided for each of the arm pieces, and one end is fixed to the arm pieces. The magnetic head is provided for each of the head supports, and is attached to the other end of the head support.

In the above-described HSA, a bending is applied to the arm piece or the head support, and a laser is irradiated to the bending area of the arm piece or the head support.

When a bend is applied to the arm piece or the head support, a stress corresponding to the bending is generated in the arm piece or the head support. In the present invention, a laser is applied to the bending region. Thereby, the stress in the bending region irradiated with the laser is released by the heat accompanying the laser irradiation. For this reason, in the bending area which has been subjected to the laser irradiation, the restoration amount of the arm piece or the head support is small, and the bending is performed at an angle close to the added bending angle. This means that even if the amount of bending change given to the arm piece or the head support is small,
This means that a large bending angle can be given to the arm piece or the head support. Thus, it is only necessary to bend the arm piece or the head support at a small bending angle.

Techniques for releasing thermal stress using a laser are disclosed in, for example, Japanese Patent Application Laid-Open Nos.
No. 0-269538. However, these prior art documents disclose a technique for bending the load beam before mounting the magnetic head on the load beam, but do not disclose a bending technique for the HSA. Even if the load beam is bent by the application of these prior arts, the load may deviate from a predetermined value in the subsequent steps of assembling the HGA, the HAA, and the HSA. It does not serve as an adjustment means.

Other objects, configurations and effects of the present invention will be described in detail with reference to the accompanying drawings which are embodiments.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view showing a configuration of a load adjusting device directly used for carrying out a load adjusting method according to the present invention, and FIG. 2 is a partially enlarged view of the load adjusting device shown in FIG. FIG. The illustrated load adjustment device includes a laser oscillation device 91, a correction device 92, and a load measurement device 93.
And a control device 94 for adjusting the load of the magnetic head device 95.

FIG. 3 is a front view of a magnetic head device to which the load adjusting method according to the present invention is applied, and FIG. 4 is a bottom view of the magnetic head device shown in FIG. In the drawings, the same components as those shown in FIGS. 1 and 2 are denoted by the same reference numerals.

The magnetic head device 95 is an HGA, and includes a head support 1 and a magnetic head 2. The head support 1 includes a load beam 11 and a flexible body 12. The load beam 11 has a protrusion 111 near the free end of the longitudinal axis L passing through the center. Load beam 1 shown
1 has bent portions 118 on both sides in the width direction,
The bending portion 118 increases the rigidity.
In order to improve the ability of the magnetic head 2 to follow a recording medium (not shown), a hole 112 is formed in the load beam 11.
Is provided. Further, a washer 115 is provided on the mounting portion 117 of the load beam 11, a hole 116 for mounting the positioning beam to the positioning device is provided, and the load beam 1
1 is provided with a hole 113 for increasing the overall elasticity.

The flexible body 12 is made of a thin spring plate, and one surface is attached to the surface of the load beam 11 on the side having the projection 111, and receives a pressing load from the projection 111. The magnetic head 2 is mounted on the other surface of the flexible body 12. The flexible body 12 at the connection point 13
The load beam 11 is attached to the side of the load beam 11 having the protrusion 111 by caulking or the like. Instead of caulking, a means such as spot welding may be used.

The flexible body 12 has a tongue 120 at the center. One end of the tongue-shaped portion 120 has a horizontal frame portion 121 of the flexible body 12.
Is joined to. Both ends of the horizontal frame portion 121 of the flexible body 12 are connected to the outer frame portions 123 and 124. Outer frame part 123,
A groove 122 is formed between the tongue 120 and the tongue 120. The magnetic head 2 is attached to one surface of the tongue-shaped portion 120 with an adhesive or the like, and the protrusion 1
11 are in spring contact. The wiring 3 is a magnetic head 2
Is connected to the extraction electrode of the magnetic transducer provided in the device.

The description will be continued with reference to FIGS. 1 and 2 again.
1 and 2 is used to adjust the load of the magnetic head device on the magnetic disk. The load changes variously under the influence of the assembled state of the magnetic head 2 with respect to the head support 1, the bending of the head support 1, and the load due to the wiring 3. According to the load adjustment method and the load adjustment device according to the present invention, the load can be reliably set to a required value.

The laser oscillating device 91 includes the load beam 11
Is irradiated with the laser LA. As the laser oscillation device 91, various devices including a YAG laser can be used. The illustrated laser oscillation device 91 includes a laser oscillation unit 911 and a laser irradiation unit 912. The laser irradiation unit 912 is directed to the bending area 6 of the load beam 11.

The correcting device 92 applies a bending to the load beam 11 for adjusting the load. Correction device 92 shown
Has a drive unit 921 including a motor and the like, and a movable arm 922 driven by the drive unit 921. Movable arm 922
Holds the load beam 11 in the P1 direction or P1
It moves linearly in two directions.

As shown on an enlarged scale in FIG.
The load beam 11 is sandwiched by the movable arm 922 of
The movable arm 922 is moved linearly in the direction P1 or P2. Thereby, the load beam 11 is bent in the P1 direction or the P2 direction. The load is adjusted by this bending.

Conventionally, the load was adjusted only by the mechanical bending described above. In the present invention, unlike this, the laser LA is applied to the bending region 6 of the load beam 11 while mechanically bending the load beam 11.
More specifically, as shown in FIG. 4, the laser LA is applied to the bending area 6 around the hole 113 provided in the load beam 11. Although a portion having a bent portion 118 provided for increasing rigidity is hard to bend, the bent portion 118 does not exist around the hole 113 and is easily bent. That is, it becomes the bending area 6.

When a mechanical bending is applied to the load beam 11, a stress corresponding to the bending is generated in the load beam 11. In the present invention, since the laser LA is applied to the bending area 6 of the load beam 11, the stress in the bending area 6 irradiated with the laser LA is released by the heat accompanying the laser LA irradiation. For this reason, in the bending area 6 that has been irradiated with the laser LA, the restoration amount of the load beam 11 is small, and the bending is performed at an angle close to the added bending angle. This means that a large bending angle can be given to the load beam 11 even if the amount of bending change given to the load beam 11 is small.

In the embodiment shown in FIG. 1, a load measuring device 9 is further provided.
3 and a control device 94. Load measuring device 93
Detects the load applied from the magnetic head 2 in contact with the magnetic head 2. A typical example of such a load measuring device 93 is a load cell. The illustrated load measuring device 93 includes a circuit section 931 and a load cell section 932 having one or a plurality of displacement measuring contacts. The contact of the load cell section 932 contacts the medium facing surface of the magnetic head 2, for example, the air bearing surface. The load detection signal obtained by the load measuring device 93 is supplied to the control device 94.

The control device 94 controls the laser oscillation device 91, based on the load detection signal supplied from the load measurement device 93.
And, it controls the correction device 92. The control device 94 is generally configured by a computer.

Accordingly, by having the load information table in the control device 94, it is determined that the load due to the bending of the load beam 11 has become an appropriate value, and the operation of the correction device 92 is stopped based on the determination result. Thus, the load adjustment can be automatically performed. The laser oscillation of the laser oscillation device 91 can be stopped together with the operation stop of the correction device 92.

Next, the effects of the present invention will be described more specifically with reference to actually measured data. Table 1 is actually measured data showing the relationship between the correction amount (mm) and the load change amount (g). Table 1
Is a device having the configuration shown in FIGS.
The second movable arm 922 is driven in the P1 direction to load beam 1
1 is a positive correction amount (m
m). Further, the amount of displacement when the movable arm 922 of the correcting device 92 is driven in the P2 direction to cause the load beam 11 to bend is displayed as a negative correcting amount (mm). The correction amount 0 (mm) corresponds to a state in which the load beam 11 is not bent from the movable arm 922.
In Table 1, the absence of the laser means that the laser beam LA is not applied to the bending area 6 of the load beam 11 (prior art), and the presence of the laser means that the bending area 6 of the load beam 11 is irradiated with the laser LA (the present invention). Means that.

FIG. 5 is a graph showing the data of Table 1. In FIG. 5, the horizontal axis represents the correction amount (mm),
The vertical axis indicates the load change (g). Curve L1 in FIG.
5, L16 are the characteristics of Table 1 with laser, and the curve L
25 and L26 are the characteristics of Table 1 without laser.

As is clear from Table 1 and FIG. 5, when the laser beam is used (characteristics L15 and L16), the load beam 11 is bent with a smaller bend than when the laser beam is not used (characteristics L25 and L26). Thus, a large load change can be caused. For example, when the correction amount is 2 (mm), the load change amount is 0.01 (g) when there is no laser, but is about 54 times 0.54 when the laser is present.
(G). The load change amount when the correction amount is 6 (g) is 0.56 (g) when there is no laser, but it is approximately six times as large as 3.19 (g) when there is a laser.

FIG. 6 is a diagram showing a configuration of a load adjusting device directly used for implementing the load adjusting method applied to the HAA. In the figure, the same components as those shown in FIG. 1 are denoted by the same reference numerals. The magnetic head device 95 is an HAA.

FIG. 7 is a front view of the HAA, and FIG. 8 is a side view of the HAA shown in FIG. HAA95 shown
Includes a head support 1, a magnetic head 2, and an arm piece 51. The arm piece 51 is integrally formed using a suitable non-magnetic metal material, for example, an aluminum alloy. The arm piece 51 has a mounting hole 52. Mounting hole 52
Is used for attaching to a positioning device included in a magnetic disk drive. The HAA is fixed to a support 7 for adjustment (see FIG. 6).

The head support 1 has one end fixed to the arm piece 51 by, for example, a ball connection structure. The head support 1 includes a load beam 11 and a flexible body 12. The HAA 95 is formed by stacking a plurality of
Configure SA.

The laser oscillation device 91 irradiates the laser LA to the bending area 6 of the arm piece 51. The correction device 92 includes the arm piece 5
Add a bend to 1. The illustrated correction device 92 includes a driving unit 921 including a motor and the like, and a movable arm 922 driven by the driving unit 921.

The measuring device 93 contacts the magnetic head 2 and detects a load applied from the magnetic head 2. The details thereof are as already described with reference to FIGS. The detection signal obtained by the measuring device 93 is supplied to the control device 94. The control device 94 includes a measuring device 93
The laser oscillation device 91 and the correction device 92 are controlled based on the signal supplied from.

FIG. 9 is an enlarged view for explaining a load adjusting method using the load adjusting device shown in FIG. As shown in FIG. 9, the arm 51 is sandwiched from above and below by the movable arm 922 of the correction device 92, and the movable arm 922 is moved linearly in the direction P1 or the direction P2. Thereby, the arm piece 51 is bent in the direction P1 or the direction P2. The load is adjusted by this bending.

In this case, according to the present invention, the laser beam L is applied to the bending area 6 of the arm piece 51 while mechanically bending the arm piece 51.
A is irradiated. When a mechanical bend is applied to the arm piece 51,
A stress corresponding to the bending is generated in the arm piece 51. In the present invention, since the laser LA is applied to the bending area 6 of the arm piece 51, the stress in the bending area 6 irradiated with the laser LA is released by the heat accompanying the laser LA irradiation. For this reason, in the bending area 6 which has been irradiated with the laser LA, the restoration amount of the arm piece 51 is small, and the bending is performed at an angle close to the added bending angle. This means that a large bending angle can be given to the arm piece 51 even if the bending change amount given to the arm piece 51 is small. Laser LA is
Irradiation is performed under conditions that do not cause fusing, discoloration, or the like to the irradiated portion. Such conditions include laser power adjustment,
It can be easily set by changing the focus.

The bending of the arm piece 51 is detected by the measuring device 93 as a change in load. The load detection signal obtained by the measuring device 93 is supplied to the control device 94.
The control device 94 controls the laser oscillation device 91 and the correction device 92 based on the signal supplied from the measurement device 93. Therefore, by providing the load information table in the control device 94, it is determined that the load has become an appropriate value due to the bending of the arm piece 51, and the correcting device 9 is determined based on the determination result.
By stopping the operation of 2, the load can be automatically adjusted. The laser oscillation of the laser oscillation device 91 can be stopped together with the operation stop of the correction device 92.

Also in the case of HAA, as described with reference to FIGS. 1 and 2, the load beam 11 of the head support 1 can be bent, and the bending area of the load beam 11 can be irradiated with the laser LA.

FIG. 10 is a diagram showing an adjusting method applied to the HSA and a configuration of a load adjusting device directly used for implementing the adjusting method. The illustrated load adjusting device includes a laser oscillating device 91, a correcting device 92, a measuring device 93, and a control device 94. The magnetic head device 95 is an HSA. Hereinafter, the magnetic head device 95 is referred to as an HSA.

FIG. 11 is a front view of the HSA 95 to which the adjusting method according to the present invention is applied, and FIG. 12 is a view showing the HSA shown in FIG.
It is a side view of SA95. The illustrated HSA 95 includes a head support 1, a magnetic head 2, and a block 5. The block 5 has a plurality of arm pieces 51. The plurality of arm pieces 51 are sequentially arranged with an interval D1. The arm piece 51 is provided to protrude from the outer peripheral surface of the base 50.
The base 50 and the arm piece 51 are integrally formed using a suitable non-magnetic metal material, for example, an aluminum alloy. In the illustrated embodiment, the number of the arm pieces 51 is two, but the number can be increased.

The base 50 is provided with a mounting hole 52 parallel to the direction in which the arm pieces 51 are arranged. Mounting hole 52
Is used for attaching to a positioning device included in a magnetic disk drive. Further, the base 50 is provided with a coil support 53 and a voice coil 54.

The head support 1 is provided for each of the arm pieces 51, and one end is fixed to the arm piece 51 by, for example, a ball connection structure. The head support 1 includes a load beam 11 and a flexible body 12. In the illustrated embodiment,
The head support 1 is provided only on one side of the arm piece 51, but is often provided on both sides of the arm piece 51 when three or more arm pieces 51 are provided.

The magnetic heads 2 are attached to the other end of each of the head supports 1. The surface opposite to the mounting side is the air bearing surface. The magnetic head 2 is provided on a flexible body 12 constituting the head support 1. As described above, the combination of the head support 1 and the magnetic head 2 is called an HGA, and the combination of the HGA and the arm is called an HAA.

The laser oscillation device 91 irradiates the bending area 6 of the arm piece 51 with the laser LA. The laser oscillation device 91
Various types including a YAG laser can be used. The illustrated laser oscillation device 91 includes a laser oscillation unit 9.
11 and a laser irradiation unit 912. Laser irradiation unit 9
12 is directed to the bending area 6 of the arm piece 51.

The correction device 92 applies a bending to the arm piece 51. The illustrated correction device 92 includes a driving unit 921 including a motor and the like, and a movable arm 92 driven by the driving unit 921.
And 2. The measuring device 93 detects the load applied from the magnetic head 2 by coming into contact with the magnetic head 2. The detection signal obtained by the measuring device 93 is supplied to the control device 94.

The control device 94 controls the laser oscillation device 91 and the correction device 92 based on the signal supplied from the measurement device 93. The control device 94 is generally configured by a computer.

FIG. 13 is an enlarged view for explaining a load adjusting method using the load adjusting device shown in FIG. As shown in FIG. 13, the arm 5 is moved by the movable arm 922 of the correction device 92.
The movable arm 922 is linearly moved in the direction P1 or P2. Thereby, the arm piece 51 is bent in the direction P1 or the direction P2. The load is adjusted by this bending.

In this case, according to the present invention, the laser beam is applied to the bending area 6 of the arm piece 51 while mechanically bending the arm piece 51.
A is irradiated. When a mechanical bend is applied to the arm piece 51,
A stress corresponding to the bending is generated in the arm piece 51. In the present invention, since the laser LA is applied to the bending area 6 of the arm piece 51, the stress in the bending area 6 irradiated with the laser LA is released by the heat accompanying the laser LA irradiation. For this reason, in the bending area 6 that has been subjected to the laser LA irradiation,
The restoration amount of the arm piece 51 is reduced, and the arm piece 51 bends at an angle close to the added bending angle. This means that a large bending angle can be given to the arm piece 51 even if the bending change amount given to the arm piece 51 is small. Laser LA
Is irradiated under such a condition that the irradiated portion is not melted or discolored. Such conditions can be easily set by adjusting the laser output, changing the focus, and the like.

FIG. 14 is a diagram showing an example of a laser irradiation method for HSA. In the case of HSA, a plurality of arm pieces 51 are arranged on the block 5 with an interval D1. Therefore, except for the arm piece 51 located on the uppermost layer, the laser LA is irradiated obliquely from the outside of the arm piece 51 through the interval D1. The laser irradiation units 922 are arranged on both sides of the arm piece 51,
It is preferable to irradiate the laser LA from both sides of the arm piece 51. The laser can be applied to the arm piece 51 located on the uppermost layer without the above-described limitation.

A change in the load of the magnetic head 2 accompanying the bending of the arm piece 51 is detected by the measuring device 93. The detecting device 932 of the measuring device 93 is retracted during the bending operation, and is advanced to the measuring position during the measuring operation.
The detection signal obtained by the measuring device 93 is
4 is supplied. The control device 94 controls the laser oscillation device 91 and the correction device 92 based on the signal supplied from the measurement device 93.

Accordingly, by providing the load information table in the control device 94, it is determined that the bending of the arm piece 51 has reached a value for obtaining an appropriate load, and the operation of the correction device 92 is determined based on the determination result. By stopping, the load can be automatically adjusted. The laser oscillation of the laser oscillation device 91 can be stopped together with the operation stop of the correction device 92. Also in the case of HSA, as described with reference to FIGS. 1 and 2, the load beam 11 of the head support 1 is bent, and the laser LA
Can be irradiated.

[0064]

As described above, according to the present invention, the following effects can be obtained. (A) It is possible to provide a load adjusting method and apparatus capable of securing a large load change amount by giving only a small bending displacement at the stage of HGA. (B) A method and an apparatus for adjusting a load at the stage of HAA can be provided. (C) It is possible to provide an adjustment method and an apparatus that can secure a necessary amount of bending displacement by giving only a small bending displacement to the arm piece or the head support at the stage of HAA. (D) It is possible to provide a method and an apparatus for adjusting a load at the stage of HSA. (E) At the stage of HSA, it is possible to provide an adjustment method and an apparatus that can secure a necessary amount of bending displacement by only giving a small bending displacement to an arm piece constituting a block.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a load adjusting device used directly in an HGA adjusting method according to the present invention.

FIG. 2 is a partially enlarged view showing the load adjusting device shown in FIG. 1;

FIG. 3 is a front view of a magnetic head device (HGA) to which the HGA adjustment method according to the present invention is applied.

FIG. 4 is a bottom view of the magnetic head device (HGA) shown in FIG. 3;

FIG. 5 is a graph showing the data of Table 1.

FIG. 6 is a diagram showing a configuration of a load adjusting device directly used for implementing the HAA adjusting method according to the present invention.

FIG. 7 is a front view of an HAA to which the adjustment method according to the present invention is applied.

FIG. 8 is a side view of the HAA shown in FIG. 7;

FIG. 9 is an enlarged view for explaining a load adjusting method using the load adjusting device shown in FIG. 6;

FIG. 10 is a diagram showing a configuration of a load adjusting device directly used for implementing the HSA adjusting method according to the present invention.

FIG. 11 is a front view of an HSA to which the adjustment method according to the present invention is applied.

FIG. 12 is a side view of the HSA shown in FIG. 11;

FIG. 13 is an enlarged view for explaining a load adjusting method using the load adjusting device shown in FIG.

FIG. 14 is a view showing a laser irradiation method in the load adjustment shown in FIG.

[Explanation of symbols]

 Reference Signs List 91 laser oscillation device 92 load adjustment device 93 load measurement device 94 control device 95 magnetic head device

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Makoto Ohashi 1-1-13 Nihonbashi, Chuo-ku, Tokyo TDK Corporation (72) Inventor Mitsuo Hayashi 1-13-1 Nihonbashi, Chuo-ku, Tokyo TDK F term in reference (reference) 5D042 AA07 BA08 CA01 CA04 CA08 DA02 DA20 5D059 AA01 BA01 CA16 DA18 DA22 DA40 EA07

Claims (10)

[Claims] 1. A method for adjusting a load of a magnetic head device on a magnetic disk, wherein the magnetic head device includes a head support and a magnetic head, wherein the head support includes a flexible body, a load, The load beam has one end at a free end, the flexible body has one surface connected to the free end side of the load beam, and the magnetic head has the other surface at the flexible body. And bending the load beam and irradiating the bending area with a laser. 2. The method according to claim 1, wherein the load beam has a protrusion near the free end, and one surface of the flexible body has the protrusion of the load beam. A method of attaching to a surface on the side having the projection and receiving a load from the projection. 3. A method for adjusting a load of a magnetic head device on a magnetic disk, wherein the magnetic head device includes a head arm assembly, wherein the head arm assembly includes an arm piece and a head support. When,
A magnetic head, wherein the head support has one end fixed to the arm piece, the magnetic head is attached to the other end side of the head support, and the arm piece or the head Applying a bend to the support and irradiating the bend area with a laser. 4. A method for adjusting a load of a magnetic head device on a magnetic disk, wherein the magnetic head device comprises a head. A stack assembly, said head. The stack assembly includes a block, a head support, and a magnetic head, wherein the block has a plurality of arm pieces, and the plurality of arm pieces are sequentially arranged at intervals. The head support is provided for each of the arm pieces, and one end is fixed to the arm piece. The magnetic head is provided for each of the head supports, and the other end of the head support is provided. A method, comprising: applying a bend to the arm or the head support; and irradiating a bend area with a laser. 5. The method according to claim 3, wherein the head support includes a load beam and a flexible body, and the load beam has a free end at one end. The method wherein the flexible body has one surface connected to the free end side of the load beam, and the magnetic head is attached to the other surface of the flexible body. 6. The method according to claim 5, wherein the load beam has a protrusion near the free end, and one surface of the flexible body has the protrusion of the load beam. A method of attaching to the surface on the side having the pressure and receiving a pressing load from the protrusion. 7. A correcting device, comprising: a laser oscillating device;
An apparatus for adjusting a load of a magnetic head device on a magnetic disk, wherein the magnetic head device includes a head support and a magnetic head, wherein the head support includes a load beam and a flexible body, One end of the load beam is a free end; the flexible body is connected to a free end side of the load beam; the magnetic head is mounted on one surface of the flexible body; The adjusting device is for applying a bending to the load beam for adjusting a load, and the laser oscillation device is for irradiating a laser to a bending region of the load beam. 8. A device including a correction device and a laser oscillation device,
An apparatus for adjusting a load of a magnetic head device on a magnetic disk, wherein the magnetic head device includes a head arm assembly, wherein the head arm assembly includes an arm piece, a head support,
A magnetic head, wherein the head support has one end fixed to the arm piece; the magnetic head is attached to the other end side of the head support; and the correction device includes the arm piece. Alternatively, the head support is bent, and the laser oscillation device irradiates a laser to a bending area. 9. A correction device comprising: a correction device; and a laser oscillation device.
An apparatus for adjusting a load of a magnetic head device on a magnetic disk, wherein the magnetic head device comprises a head. A head assembly. The stack assembly includes a block, a head support, and a magnetic head, wherein the block has a plurality of arm pieces, and the plurality of arm pieces are sequentially arranged at intervals. A support is provided for each of the arm pieces, one end is fixed to the arm piece, and the magnetic head is provided for each of the head supports, and is provided on the other end side of the head support. The correction device is attached, the correction device applies a bend to the arm piece or the head support, and the laser oscillation device irradiates a laser to a bending area. 10. The device according to claim 7, further comprising a load measuring device and a control device, wherein the load measuring device contacts the magnetic head and An apparatus for detecting a load applied from a magnetic head, wherein the control device controls the laser oscillation device and the load adjustment device based on a signal supplied from the load measurement device.