JPS6066374A - Assembling method of transducer - Google Patents

Abstract

PURPOSE:To improve the efficiency of positioning work of a flexible body by drilling two positioning holes on the longitudinal shaft of the flexible body and the shaft of a member to be used in common so that two members are unitedly fixed. CONSTITUTION:An assembling jig 30 has a horizontal receiving surface 31 on which an elastic spring part 3 and a triangular load beam part 4 are abutted and the positioning holes 32a, 32b are drilled on two positions of the longitudinal shaft 12 extended from the receiving surface 31. Positioning holes 33a, 33b and 34a, 34b are drilled on the positions of the loading beam 4 and the flexible body 8 which correspond to the positioning holes 32a, 32b of the jig 30 respectively. A flange 5 is turned downwards and the surface of the elastic spring part 3 and that of the loading beam 4 are abutted on the receiving surface 31 of the jig 30 so that respective positioning holes 32a, 32b and 33a, 33b are made to correspond to each other. A center tongue-like part 16 of the flexible body 8 is turned upwards and abutted on the receiving surface 31 while positioning the positioning holes 34a, 34b of the flexible body 8 to the positioning holes 33a, 33b and then pins 40a, 40b are planted on the positioning holes 34a, 34b.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to a magnetic head mounting device for a dynamic magnetic storage device, and particularly relates to a method for erecting an air bearing slider.

[Prior Art and its Problems] In order to enable a magnetic transducer to closely track a magnetic disk surface at regular intervals, an air bearing head slider and its support undergo pitch movement ( (swinging back and forth) and rolling motion (swinging in the lateral direction) about a second axis perpendicular to the first axis.
It is desirable to be able to do this. It is also desirable to minimize radial and circumferential forces on the head arm and eliminate yaw. Conventionally known magnetic head supports can overcome some of these problems. However, it is desirable to support the slider with as few parts as possible while providing flexibility for the pitch and roll motions of the magnetic transducer, the slider to which the magnetic transducer is fixed, and the flexible body.

That is, it must have a very small number of parts, be rigid against forces in the radial direction and the circumferential direction, and be prevented from yawling.

BACKGROUND ART Conventionally, as a support device for a transformer gear that achieves the above-mentioned purpose, one having the following configuration is known. a single substantially rectangular flexible body having two elongated flexible fingers disposed parallel to a longitudinal axis defining an access path of the head assembly; It includes a relatively rigid cross frame that connects the two flexible fingers. This horizontal frame is stepped facing the magnetic disk, and constitutes a thin central finger (tongue) to which the air bearing slider is attached. The horizontal frame has a loading protrusion on the thin finger (tongue) in the center, and this protrusion is arranged to coincide with the center of gravity of the slider, and is substantially parallel to the height of the step of the horizontal frame. have the same height.

This is a flexible body with a curved structure, which is supported by a member that also serves as an elastic part and a load beam part, and applies a predetermined load to the slider through the protrusion to press the slide numberer against the magnetic disk surface. ing. Transformer 5 of this configuration. - The yaw motion in the radial and circumferential directions can be suppressed with a small number of parts.

In recent years, there has been a strong demand for improved recording density in recording media. It's A. Along with this, it has become important to lower the flying height of the slider, and to achieve this goal,
While reducing the size of the slider, attempts have been made to reduce the influence of m-setting errors and the like by reducing the thickness of the dual-purpose member and flexible body that support the slider, thereby making the slider fly at a low level stable. However, if the dual-purpose member and the flexible body, or the flexible body and the slider, are positioned individually, the thinner flexible body is likely to cause deformation such as twisting, and the slider will have a lower flying height. In this case, there is a problem in that a dropout occurs that impedes stable levitation and reduces work efficiency. [Object of the Invention] The present invention solves the following problems. This was created in view of the above problems, and its purpose is to improve the efficiency of positioning flexible bodies,
The present invention provides a method for introducing a transducer that is advantageous for lowering the flying height of a slider.

The above-mentioned member, wherein first positioning holes are provided at at least two locations on the longitudinal axis of the bowl body, and the dual-purpose member extends second positioning holes equally spaced from these first holes. This is achieved by integrally fixing the two members after the first and second positioning holes are brought into contact with each other so as to overlap on the same plane of the positioning tool. be done.

[Effects of the Invention] According to the method for assembling a transducer according to the present invention described above, the positioning holes provided in the flexible body and the dual-purpose member can be overlapped on the same surface of the positioning holder that does not require a step. This eliminates the gap between the two members, and the holder functions as a reinforcement for the two members during positioning, improving workability. Since the two members can be fixed with less twisting and deformation, stable levitation can be achieved.

Furthermore, the fixed end of the flexible body that supports the slider extends to the vicinity of the boundary line between the load beam section and the elastic section and is fixed, so the flexible body functions as a rigid reinforcement member for the load beam section. Therefore, the amount of deflection can be increased by making the elastic part even thinner. In addition, the distortion of the mounting part where the elastic part is fixed is
The thinned flexible body can absorb in areas that are not fixed to the load beam. These effects have the effect of minimizing errors during transducer assembly and achieving correct slider positioning.

[Embodiments of the invention] The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a plan view showing one embodiment of a magnetic head arm assembly according to the present invention. This assembly includes a support 1 made of, for example, stainless steel, and this support 1 is made of, for example, aluminum. It is fixed to the mount part 2 by welding. The mount 2 is attached to a drive device (not shown), and the mount section 2 is generally mounted on a large number of heads, arms, etc., such as a disk file access device.
The structure may include blocks carrying an assembly.

The support body 1 includes an elastic spring part 3 and a triangular loading beam part 4. The load beam portion 4 is provided with a flange 5 as a flat load beam bending portion. The load beam section 4 generates the load beam force necessary to force the air bearing magnetic assembly against the moving medium 6. In addition,
The moving medium 6 may be, for example, a rotating disk. A flexible body 8 is fixed to the load beam part 4 of the support body 1 by welding after being positioned between the flexible body 8 and the beam part 4 by a method described in detail later.

The flexible body 8 is made of stainless steel, for example, and has a substantially rectangular shape formed of a thin plate with a thickness of about 40 to 60 μm. One extending longitudinal end of this flexible body is formed with two narrow outer flexible fingers 10 extending parallel to the longitudinal axis 12 of the head arm assembly. has been done. During operation of an Arccess disk file, the longitudinal axis 12 is a data center through which the head arm assembly passes.
Define truck access roads. An axis 13 perpendicular to the axis 12 indicates the path of the L track as the data track traverses the signal conversion gap of the head. The two outer flexible fingers 10 are connected to a rigid crossbar 14 substantially parallel to the orthogonal axes. A central tongue 16 is formed between the flexible fingers 10. the transformer is fixed to the central tongue 16 by, for example, epoxy adhesive;
The slider 18 and transducer are placed in a flight air vesting position relative to the disk 6. The central tongue 16 is parallel to and has the same thickness as the two outer flexible fingers 10 and supports an air bearing head-slider assembly including a magnetic transducer and sensing gap. The forming surface of the horizontal frame 14 and the forming surface of the flexible finger portion 10 are shifted in a stepwise manner, so that the surface on which the central tongue portion 16 is formed as shown in FIG. is located closer to the disk medium 6. The deformation or step of the cross frame 14 forms a gap between the slider 18 and the load beam 4 so that roll movement is not obstructed.

Further, by forming the step portion 14, the load protrusion of the central tongue portion 16 is arranged on the forming surface of the flexible finger portion 1o. As a result, the amount of friction exerted by the load protrusion on the load beam portion 4 is reduced.

The tip of the support 10 loads the slider 18 to maintain the transducer in an operating position proximate the disk 6. The slider 18Fi is preferably fixed to the central tongue 16 so that the loading protrusion is located at the center of gravity of the slider. The loading beam portion 4, which is a triangular portion of the support l and has a bent portion 5 above, is attached to the slider 18.
A load is applied to direct the slider 18 toward the disk, and the load is transmitted to the center of gravity of the slider 18 by the loading protrusion. The loading protrusion can be created by forming an indentation in the central tongue 16 of the flexible body 8.

One feature of this support device for a transducer is that the central a-shaped portion 16 that supports the slider 18 has two axes 1 that intersect with the load contact point between the tip of the support 1 and the load protrusion.
2 and 13. By forming a stepped portion on the horizontal frame 14, a gap is formed between the support body 1 and the slider 18, and the contact point between the load beam portion 18 and the load protrusion portion is formed in the form of the slider 18 and the disk 6. It is not possible to use a single piece flexure 8 to act as a pivot point for roll and pitch movements to follow changes in . The pivot point is located at the center of the tongue 1 such that it coincides with the geometric center of the flexible body 8.
The use of a central tongue 16 with an inverted cantilevered structure with the free end set at 6 allows the slider to respond quickly and without resistance to air bearing changes.

Flexible body 1 of the transducer support device having such a configuration
The other end side of 6 extends to the vicinity of the boundary line between the elastic spring part 3 forming the support weight and the load beam part 4, and is fixed by welding. By extending the other end of the flexible body 16 to the vicinity of the boundary line in this manner, the rigidity of the load beam section 4 can be increased. Therefore, it is possible to further reduce the thickness of the elastic spring part 3 and the load beam part 4, and the amount of deflection of the elastic spring part 3 is increased, so that when the mount is attached to a drive device, the mounting in the direction of gravity can be avoided. Errors can be kept small. Moreover, since the strain on the receiving surface of the drive device mount is absorbed through the elastic spring section 3 in the area where the flexible body 16 of the load beam section 4 is not in contact, the positioning error associated with fixing the mount is minimized. If you press it to the limit, you will get a sharp edge.

A method of assembling the transducer support device having the configuration as described above will be explained with reference to FIG. 4. That is, 30 is an assembly jig, and between the jigs there is a horizontal receiving surface 31 on which the elastic spring section 3 and the triangular load beam section 4 come into contact. Two positioning holes 32a and 32b are provided on the extending longitudinal axis 12 of the receiving surface 31 for holding a bottle, which will be described later. This axis 12 coincides with the longitudinal axis along which the support 1 extends. Then, positioning holes 33a, 33b and 34a, 34b are formed at equal intervals at positions corresponding to the positioning holes 32a, 32h of the jig added in the load beam part 4 and the flexible body 8, which are on the axis of the support body 1, respectively. It is drilled.

Then, as shown in FIG. 4, with the flange 5 facing downward, the surfaces of the elastic spring section 3 and the load beam section 4 are inserted into the respective positioning holes 32a, 32bTh and 3 on the receiving surface 31 of the jig I.
3a.

33b are brought into contact with each other so as to be approximately positioned.

Next, on the upper surface of the load beam section 4, positioning holes 34a, 34b of the flexible body 8 are inserted into the respective positioning holes 33a, 33b.
Bring it into contact with the top side. and a positioning hole 34a.

Set up the bottle from 34b. Each positioning hole 34a,
The reed 34b is on the same plane, and the receiving surface 31 of the jig (9) and the surface of the portion where the positioning holes of the load beam part 4 and the flexible body 8 are provided are in contact with each other so that there is no gap. Therefore, when the bottle is placed in the positioning hole, the receiving surface 31 of the jig (material) acts as a reinforcement for each member, making it difficult for deformation force 5 such as twisting to occur on the flexible body 8, so that the bottle can be easily placed. Can be erected. When the bottle is erected, the positioning of the flexible body in the access direction is completed, and the flexible body 8 is fixed to the load beam part 4 by spot welding or the like while the bottle is erected.

Then, the slider 18 is fixed to the central tongue portion I6 using, for example, an epoxy resin adhesive such that the loading protrusion is located at a position that substantially coincides with the center of gravity of the slider 180.

Another feature of adopting the above-described assembly method according to the present invention is that after assembling the slider 18 and the flexible body 8,
The flexible body 8 and the load beam section 4 must be firmly attached to each other. It is desirable to do so. However, if the flexible body 8 is fixed to the load beam section 4 and then the slider 18 is fixed, the pivot point is hidden in the load beam section, so matching the pivot point and the center of gravity is a matter of experience and intuition. There is a drawback that the alignment becomes dependent on the position and the workability deteriorates. However, according to the assembly method example of the present invention, the fixed end of the flexible body 8 is extended to the vicinity of the boundary line between the load beam part and the elastic spring part 3, and has a sufficient length to facilitate positioning in the access direction. Since we have achieved a possible configuration, after positioning the flexible body 8 and the slider 18,
Flexible bodies can be fixed.

FIG. 5 is a perspective view showing an example of a method for assembling the slider 18 and the flexible body 8. Step 41 is how to assemble the above two members. That is, this jig 41 has a receiving base 43 having a receiving surface 42 against which the extended portion of the flexible body 8 comes into contact.
is formed. The longitudinal axis extending from this receiving surface is aligned with the axis 12 of the flexible body 8, and there are positioning holes on this axis 44 equally spaced from the positioning holes 34a and 34b of the flexible body 8. 45a and 45b are provided. The jig 41 further includes a flexible body 34a.

A support frame 46 for fixing the slider 18 is provided so that the center of gravity of the slider 8 overlaps with a point at the same distance from the positioning holes 45a and 45h of the base 43. It is being With this, after fixing the slider to the support frame 46, apply adhesive to the pivot point of the protrusion of the flexible body 8, and fix the flexible body 8 to the cradle 43 with a pin (not shown). , flexible body 8 and slider 18
Accurate alignment is completed. If the slider 18 is fixed in advance and the flexible body 8 is fixed to the load beam part 4 constituting the support body 1 using the jig explained in FIG. 4, accurate positioning becomes possible. .

As is clear from the above explanation, according to the method for assembling a transducer according to the present invention, twisting and deformation of the flexible portion during positioning can be reduced, and the positioning can be performed accurately, improving work efficiency and improving productivity. Ritsuda slider can achieve extremely stable flying performance.

[Brief explanation of the drawing]

1 to 3 are diagrams for explaining the principle structure of the transducer according to the present invention, in which FIG. 1 is a plan view thereof, FIG. 2 is a partial vertical sectional view thereof, and FIG. 4 is an exploded perspective view of an embodiment of the invention, and FIG. 5 is an exploded perspective view of another embodiment of the invention. DESCRIPTION OF SYMBOLS 1...Support body, 2...Mount part 3*Elastic spring part, 4*Loading beam part, 8*Flexible body, 18*Slider. 32a , 32b ・33a , 33h -34a ,
34b ・45a, 45b --- Positioning hole, 40
a, 40b-...bin. Figure 1 Figure 2

Claims (1)

[Scope of Claims] A flexible tongue part extending from the frame toward the notch part is provided, and the nine flexible parts are supported by a dual-purpose member having an elastic part and a load beam part,
A support body in which a load protrusion is disposed between the dual-purpose member and the flexible tongue part, and an air bearing slider attached to the flexible tongue part of the support body. In the transducer, first positioning holes are provided at at least two locations on the longitudinal axis of the flexible body from which the flexible body extends from the support body, and Equally spaced second positioning holes are provided on the longitudinal axis of the dual-purpose member extending from the dual-purpose member, and these first and second positioning holes are provided on the same plane of the positioning jig. A method for assembling a transformer, characterized in that the two members are brought into contact with each other in an overlapping manner, and then the two members are integrally fixed and assembled. (2) The end portion of the flexible body fixed to the dual-purpose member is
2. The method of assembling a transducer according to claim 1, wherein the transducer has a length extending to near a boundary between the elastic portion and the load beam portion. (3) A notch extending in the same plane and forming two outer flexible fingers that are connected to each other by a low-flexibility horizontal frame that is step-like at one end, and a notch that is cut out from the horizontal frame. A flexible body consisting of a flexible tongue-shaped portion extending toward the is supported by a member that serves as both an elastic portion and a load beam portion,
A support body in which a load protrusion is disposed between the dual-purpose member and the flexible tongue part, and an air bearing slider attached to the flexible tongue part of the support body. In the transducer, the support body is provided with first positioning holes at at least two locations on the longitudinal axis of the flexible body through which the flexible body extends, and the support body is provided with first positioning holes at at least two locations on the longitudinal axis of the flexible body, and the support body is provided with first positioning holes at at least two locations on the longitudinal axis of the flexible body, and the support body is provided with first positioning holes at at least two places on the longitudinal axis of the flexible body, and A second positioning hole is provided on the longitudinal axis of the dual-purpose member through which the dual-purpose part cavity extends, and the first and second positioning holes are formed after the flexible slider is installed. Assembly of a transgysser, characterized in that the flexible body and the dual-purpose member are brought into contact with each other so as to overlap on the same plane of a positioning holder, and then the two members are integrally fixed and assembled. Method.