JPH1131369A - Gimbal for hdd head, and head mounting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gimbal for a HDD head and a head mounting method in which the positioning and fixing of a core on a head are performed simply and surely. SOLUTION: A view hole (image pickup enabling hole part) ID as a first reference point is arranged at a tip of a load beam 1, a tooling hole 1B or an alignment hole 1C provided on an appropriate place of the load beam 1 is selected as a second reference point. The first reference point and the second reference point are positioned by operating an appropriate image pickup means, and a core 4 is arranged at a precise position on a core mounting part in a flexier 2 so as to keep appropriate relative position for a dimple 1E provided on the load beam 1, based on the result of this positioning.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gimbal for an HDD head and a method of mounting the head, and more particularly, to an H head for simply and reliably positioning and fixing a core on a head.
The present invention relates to a gimbal for a DD head and a head mounting method.

[0002]

2. Description of the Related Art In a conventional HDD head gimbal, mechanical means such as positioning pins are used for positioning when mounting a core to be used. In order to perform positioning, positioning means such as tooling holes and alignment holes as mechanical positioning holes have been provided on the gimbal side for inserting the positioning pins.

[0003]

By the way, this kind of HD
The D head is required to have high precision as well as miniaturization in accordance with high-density recording. It is also required to further improve the mounting accuracy of the HDD head core on the gimbal. For example, in the conventional HDD head, the mounting accuracy of the core was within the tolerance of about ± 50 μm,
At present, requirements are becoming strict to about ± 10 to 20 μm.

According to the conventional mechanical positioning described above, since it is necessary to provide a clearance between the positioning pin and the mechanical positioning hole of the gimbal, the HDD needs to be provided.
It was difficult to make the mounting accuracy of the head core less than this clearance. For this reason, when driving a personal computer or the like incorporating the HDD device, the facing state between the hard disk built in the HDD device and the core portion of the gimbal for the HDD head becomes unstable, and data reading / writing becomes defective. In addition, in extreme cases, contact between the hard disk and the core may occur, causing damage to these components.

Therefore, when positioning the core with respect to the gimbal, the position of the mechanical positioning hole provided on the gimbal side is detected by using an appropriate imaging means, and the position is detected in accordance with the detection result. The mounting position of the core is determined, and the mounting is performed using a predetermined NC positioning device. However, the mounting direction is accurately determined only with a single mechanical positioning hole (ie, a tooling hole). Can not do. Also, near this touring hall,
Alignment holes are provided for mutual mechanical positioning when assembling the gimbal components,
It is conceivable to use this alignment hole for positioning in addition to the tooling hole.However, since the gimbal has structural limitations and is located very close to each other, it is not possible to use this alignment hole at the same time. ,
There was naturally a limit for high-precision positioning.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the desired solutions can be attained by the following means.

(1) The first near the HDD head mounting position
H provided with an imaging hole as a reference point
Gimbal for DD head.

(2) The imaging hole as the first reference point is provided between a tooling hole or an alignment hole as a second reference point and an HDD head mounting position. Gimbal for HDD head.

(3) The gimbal for an HDD head according to (1) or (2), wherein the diameter of the imaging hole as the first reference point is set to φ0.5 mm or less.

(4) A method of mounting a core at an appropriate position of a core mounting portion at a tip portion of a flexure, which is one component of a gimbal for an HDD head, wherein a predetermined position of a dimple in a load beam opposed to the flexure is provided. Using the position data obtained with respect to the first reference point and the second reference point to align the position of the first reference point and the second reference point.

(5) A method of mounting a flexure, which is a component of the HDD head gimbal, at an appropriate position on a load beam, wherein the first reference point and the second reference point are used to determine the positional relationship between the two. The method as described above, characterized by using position data obtained for points.

(6) A method of mounting a core at an appropriate position of a core mounting portion at a tip portion of a flexure, which is a component of an HDD head gimbal, wherein the core mounting portion has a projection. Using the position data obtained for the first reference point and the second reference point to determine the mounting position of the core relative to the part.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, as shown in FIGS. 1 and 2, for example, a view hole (image pickup hole) 1D (having a diameter of 0.5 mm or less) as a first reference point. Is disposed at the tip of the load beam 1. Further, the tooling hole 1B or the alignment hole 1C provided at an appropriate position of the load beam 1 is selected as the second reference point. Then, for example, the first reference point and the second reference point are positioned by operating an imaging unit (not shown) arranged on the right or left side of FIG. 1B. Next, based on the result of the positioning, the dimples 1E provided on the load beam 1 have an appropriate positional relationship (for the HDD head).
The core 4 is arranged at an accurate position on the core mounting portion 5 in the flexure 2.

FIG. 4 shows a case where the load beam is not required.
However, the core mounting portion 5A has a shape protruding inward only at a portion where the HDD head core 4 is mounted. This HDD
The head core 4 needs to be mounted on the flexure 2 so that the center of the head core 4 is adjusted to an appropriate position on the core mounting portion 5A. Therefore, as the first reference point (diameter φ 0.
A view hole (image-capturable hole) 2D (5 mm or less) is arranged at the tip of the flexure 2. In addition, the tooling hole 2B or the alignment hole 2C provided at an appropriate position of the flexure 2 is selected as the second reference point. Then, as in the case of FIGS. 1 and 2, (H
The core 4 (for the DD head) is arranged at an accurate position on the core mounting portion 5A of the flexure 2.

The above-mentioned view hole (imaging hole)
The 2D aperture is not used for mechanical positioning, but is only required to be able to pass visible light. It is preferably 5 mm or less, and is actually about 0.2 mm.

[0016]

【Example】

First Embodiment A gimbal of a three-piece structure which is a gimbal for an HDD head according to a first embodiment of the present invention: FIG. 1 is an explanatory diagram of a gimbal for an HDD head according to a first embodiment of the present invention. , (A) a top view and (b) a side sectional view. FIG. 2 is an exploded view of the gimbal for the HDD head according to the first embodiment.
The pieces (a) load beam, (b) flexure and (c) base plate are shown. 1 and 2, a base plate 3 is disposed at the lower end of the load beam 1, and a flexure 2 is disposed so as to substantially cover the load beam 1. A dimple (hemispherical projection) 1E is formed at the tip of the load beam 1, and the flexure 2 is substantially parallel to the load beam 1, and the flexure 2
The dimple 1E is in contact with the tip of the.

The components provided on the load beam 1 are as follows:
A caulking hole 1A, a tooling hole 1B, an alignment hole 1C, a view hole (capturable hole) 1D, and a dimple 1E. Here, caulking hall 1A
Is used to fix both the load beam 1 and the base plate 3 together to a corresponding frame (not shown) in the HDD, corresponding to the caulking hole 3A provided in the base plate 3.

The tooling hole 1B and the alignment hole 1C correspond to the tooling hole 2B and the alignment hole 2C provided in the flexure 2, respectively, in order to set a required positional relationship for both the load beam 1 and the flexure 2. Used. The tooling holes 1B and 2B and the alignment holes 1C and 2C are mechanically set to the required positional relationship by inserting corresponding pins (not shown).

A view hole (image-capturable hole) 1D is used to dispose the core 4 (for the HDD head) at an accurate position with respect to the core mounting portion 5 provided at the tip of the flexure 2. For example, by operating imaging means (not shown) arranged on the right side or left side in FIG. 1B, positioning is performed using the view hole (imageable hole) 1D as a first reference point. And tooling hole 1B or alignment hole 1C
Is used as a second reference point for positioning. Then, the core 4 (for the HDD head) is accurately positioned on the core mounting portion 5 of the flexure 2 so as to have an appropriate positional relationship with the dimple 1E provided on the load beam 1 on a straight line connecting the two. Place in position.

That is, the core (for the HDD head) 4
By using a predetermined core mounting means (not shown), it is necessary to appropriately mount the dimple 1E on the mounting plate 5 in the flexure 2 so that the center of the dimple 1E is aligned with the center of the dimple 1E. Since the flexure 2 is disposed on the upper surface, it is difficult to directly detect the position of the dimple 1E.
(Note that, although not shown, on the back side of the load beam 1 [the surface opposite to the mounting surface of the flexure 2], there is a receiver for a core mounting machine for fixing the load beam 1 and this back side. Therefore, it is difficult to detect the position of the dimple 1E.) Therefore, the gimbal position detection hole 1D (view hole: φ 0.2 mm) is provided on the load beam 1 at a position near the dimple 1E where an image can be taken. Is provided. The dimple 1E itself has a hole 1B serving as a reference for the position on the load beam 1.
(Tooling hole: φ 0.8 mm) at a specific position at an accurate distance. Therefore, a view hole 1D is provided at a predetermined position with respect to a straight line connecting the tooling hole 1B and the dimple 1E. Then, by measuring the positions of the two holes of the tooling hole 1B and the view hole 1D, the position of the dimple 1E (that is, the direction and distance from the reference hole) is obtained by performing a predetermined calculation. Can be. In the first embodiment, the caulking hole 1A may be used as a reference point.
As shown in (a), the portion corresponding to the base plate 3 and the portion corresponding to the flexure 2 of the HDD head gimbal are:
There is a predetermined angle with the dotted line XX as a boundary, and the view hole 1D and the caulking hole 1A are not on the same plane;
It is not appropriate to use the caulking hole 1A as a reference point because the distance between the two is considerably long, and the diameter of the latter is significantly larger than that of the former.

Then, the numerical value obtained by this calculation is set to an appropriate N
By applying the present invention to the C positioning device, the HDD head core 4 can be mounted with high accuracy at the target dimple 1E position. When the flexure 2 is mounted at an appropriate position on the load beam 1, position data obtained for the first reference point and the second reference point can be used to determine the positional relationship between the two.

[Second Embodiment] A gimbal of a three-piece structure which is a gimbal for an HDD head according to a second embodiment of the present invention: FIG. 3 is a top view of a gimbal for an HDD head according to a second embodiment of the present invention. FIG.

In the case of the first embodiment, the view hole 1D on the load beam 1 is provided at a position where the view hole 1D is not hidden by the flexure 2. In the second embodiment, however, FIG. As shown, view holes 1D and 2D can be provided at positions where the load beam 1 overlaps the flexure 2, respectively. In this case, it is necessary to form holes of the same shape at predetermined positions facing each other as view holes 1D and 2D for both the load beam 1 and the flexure 2.
Alternatively, the diameter of the view hole 2D provided on the flexure 2 is made slightly larger than that of the view hole 1D on the load beam 1, and the view hole 1D on the load beam 1 is formed.
D can be always detected.

In the second embodiment as well, as shown in FIG. 3, the portion corresponding to the base plate 3 and the portion corresponding to the flexure 2 of the gimbal for the HDD head are indicated by a dotted line Y-.
It is inappropriate to use the caulking hole 1A as a reference point because the view hole 1D and the caulking hole 1A are not on the same plane because of a predetermined angle with Y as a boundary.

[Third Embodiment] A two-piece gimbal for an HDD head gimbal according to a third embodiment of the present invention: FIG. 4 illustrates a gimbal for an HDD head according to a third embodiment of the present invention. FIG.
(B) Flexure and (c) base plate are shown respectively.

One feature of the third embodiment is that the load beam is omitted, and there is no dimple in the first and second embodiments. Instead,
The distal end of the flexure 2 has a shape protruding inward only at a portion where the HDD head core 4 is mounted (hereinafter, referred to as a protruding portion 5A). The HDD head core 4 needs to be mounted on the flexure 2 so that its center is adjusted to an appropriate position on the protrusion 5A. The third connection hole 2E on the flexure 2 side and the connection hole 3E on the base plate 3 side are used to connect the two.
The HDD head gimbal in the embodiment is configured.

However, this projection 5A has a core 4
There is no object for position detection necessary for mounting the projection 5A, and a means for fixing the flexure 2 is an obstacle on the back side of the projection 5A. It is difficult to detect the position.

For this purpose, a hole 2D (view hole: φ0.2 mm) for detecting the position of the gimbal is provided as a first reference point at a position near the protrusion on the flexure 2 where an image can be taken. The protrusion 5A is provided with a hole 2C (tooling hole: φ0.7 m) serving as a second reference point at a position on the flexure 2.
m) at a precise specific position. Therefore,
By providing the view hole 2D at a fixed position (usually, a point at a fixed distance on the line) with respect to a straight line connecting the tooling hole 2C and the center of the projection, the two of the tooling hole 2C and the view hole 2D are provided. By measuring the position of the hole, the position of the center of the projection (that is, the direction and distance from the reference hole) can be obtained by performing a predetermined calculation. Also in the case of the third embodiment, the alignment hole 2B can be selected as the second reference point instead of the tooling hole 2C.

In the third embodiment, as shown in FIG. 4, the portion corresponding to the base plate 3 and the portion corresponding to the flexure 2 of the HDD head gimbal are indicated by a dotted line Z-.
It is inappropriate to use the caulking hole 3A as a reference point because the view hole 2D and the caulking hole 3A are not on the same plane because there is a predetermined angle with Z as a boundary.

By applying the numerical value obtained by this calculation to the NC positioning device, the HDD head core 4 can be mounted with high accuracy at the target position of the center of the projection 5A.

[0031]

As described above in detail, according to the present invention, when mounting the HDD head core on the HDD head gimbal, the position of the HDD head gimbal can be detected with high accuracy. Possible and, consequently, HDD
The mounting accuracy of the head core can be greatly improved.

[Brief description of the drawings]

FIG. 1A is a top view of a gimbal for an HDD head according to a first embodiment of the present invention, and FIG.

FIG. 2 is an exploded view of the gimbal for the HDD head according to the embodiment of the present invention, showing (a) a load beam, (b) a flexure, and (c) a base plate.

FIG. 3 is a top view of a gimbal for an HDD head according to a second embodiment of the present invention.

FIGS. 4A and 4B are explanatory views of a gimbal for an HDD head according to a third embodiment of the present invention, wherein FIG. 4A shows an overall configuration, FIG. 4B shows a flexure, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Load beam 1A, 3A Caulking hole 1B, 2B Tooling hole 1C, 2C Alignment hole 1D, 2D View hole (imageable hole) 1E Dimple 2 Flexure 2E Connection hole 3 Base plate 3E Connection hole 4 Core (for HDD head) 5, 5A core mounting part

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Takefumi Yazaki 1-13-1 Nihonbashi, Chuo-ku, Tokyo Inside TDK Corporation

Claims (6)

[Claims] 1. A gimbal for an HDD head, wherein an imaging hole as a first reference point is provided near an HDD head mounting position. 2. An imaging hole as the first reference point,
2. The gimbal for an HDD head according to claim 1, wherein the gimbal is provided between a tooling hole or an alignment hole as a second reference point and an HDD head mounting position. 3. The HDD head gimbal according to claim 1, wherein the diameter of the imaging hole as the first reference point is set to φ0.5 mm or less. 4. A method of mounting a core at an appropriate position of a core mounting portion at a distal end portion of a flexure, which is a component of an HDD head gimbal, wherein a predetermined position of a dimple in a load beam opposed to the flexure is determined. The method according to claim 1, further comprising using position data obtained with respect to the first reference point and the second reference point to position the core mounting portion in a proper position. 5. A method for mounting a flexure, which is a component of a gimbal for an HDD head, at an appropriate position on a load beam, wherein the first reference point and the second reference point are used to determine a positional relationship between the two. Using the position data obtained with respect to. 6. A method for mounting a core at an appropriate position of a core mounting portion at a distal end portion of a flexure, which is a component of an HDD head gimbal, wherein the core mounting portion has a projection, and the projection includes a projection. Using the position data obtained with respect to the first reference point and the second reference point to determine the mounting position of the core with respect to.