JPH02173925A - Production of t-shaped slider for magnetic head - Google Patents

Abstract

PURPOSE:To easily produce T-shaped sliders with a high productivity by working the surface of a plate-shaped body with plural grooves in two rectangular directions and fitting rectangular pieces, which are approximately matched to respective grooves in one direction, into these grooves and cutting this plate- shaped body. CONSTITUTION:A plate-shaped body 1 made of a magnetic head slider material is prepared and has the surface worked with grooves 2 and 3 in rectangular directions. Rectangular pieces 4 made of the magnetic head slider material in accordance with dimensions of grooves 3 are fitted into groove 3 in one direction. Thereafter, the body 1 is cut in end parts of grooves orthogonal to grooves, into which rectangular pieces 4 are fitted, and middle parts 6 between rectangular pieces fitted into grooves to simultaneously produce many T-shaped sliders 7. Thus, T-shaped sliders are produced with satisfactory dimension and shape precisions and a high productivity.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a single-shaped slider for a magnetic head (2)
In particular, the present invention relates to a method capable of simultaneously manufacturing a large number of J2 units at low cost and with high productivity.

(Conventional technology) Writing data to recording media such as floppy disks
The magnetic head used for reading or erasing is shown in FIG.

As shown in the figure, the main piece of a flat E-shaped composite core a having a recording/reproducing gap and an erasing gap is sandwiched between two abbreviated sliders b, b from both sides. It unifies the whole. A recording/reproducing coil C and an erasing coil d are wound around the legs at both ends of the composite core a, respectively.

However, in a magnetic head with this configuration, there is no problem because the gap forming side end (lower side in the figure) of composite core a is held between sliders b, b, but the leg portions of composite core a are not supported at all. There are problems with strength.

Therefore, the present inventors devised a T-shaped slider f capable of supporting the central leg of the composite core a, as shown in FIG.

These sliders are generally made by loading slider raw materials, such as powders of potassium titanate or barium titanate, into a mold, and applying heat and pressure to firmly fuse the raw material powders together. Alternatively, in the case of a T-shaped slider f, a patch plate g shown in FIG. 6(B) is attached to the L-shaped slider b shown in FIG. 6(A), and a patch plate g shown in FIG. As shown, it was manufactured by adhering it with a resin adhesive.

(Problem to be solved by the invention) However, in the manufacturing method using the above-mentioned mold, ■ slider f
is extremely small and has a complicated shape, ■ If the shape and dimensions of the slider f differ even slightly from the design values, the assembly described above will be impossible, so high precision is required for the slider adjustment mold. ■These ■ and ■ are more noticeable in the T-shaped slider f, which is often used for automation in magnetic head manufacturing, so advanced technology is required for mold molding, and the mold molding cost becomes high. .

Therefore, if a slider with different dimensions and shapes is required, a high-precision mold that matches these dimensions and shapes must be prepared each time, and the cost required for molding will be enormous. .

Furthermore, even if a high-precision mold is formed, it is extremely difficult to uniformly load raw materials into an extremely small and complex-shaped mold, and to uniformly heat and pressurize the loaded raw materials. Have difficulty. If these become non-uniform, it will not be possible to obtain a high-strength slider, and it will be difficult to obtain a slider with high strength.
Alternatively, damage to the slider may occur during use as a magnetic head.

On the other hand, the L-shaped slider b and the backing plate g shown in FIGS.
Although the manufacturing method does not have the above-mentioned problems, it is extremely difficult to bond the extremely small L-shaped slider b and the backing plate g while positioning them with high precision, resulting in poor workability and low productivity. has decreased significantly.

The present invention has been made in view of the above points, and its purpose is to easily manufacture a single-shaped slider with high strength without requiring a high-precision mold and with high productivity. An object of the present invention is to provide a method for manufacturing a single-shaped slider for a magnetic head.

(Means for Solving the Problems) In order to solve the above object, in the present invention, a plurality of grooves are formed in two directions orthogonal to the surface of a plate-shaped body, and the grooves are formed in each groove in one of the directions. A rectangular piece approximately matching the above was inserted, and then cut at the end of the groove in the other direction and at the center between the six rectangular pieces, or each of these and the center of the plate.

(Function) In the present invention, a plate-shaped body prepared from a magnetic head slider material such as potassium titanate or barium titanate is prepared, and a plurality of grooves are formed in two directions perpendicular to the surface of the plate-shaped body. do.

Then, a rectangular piece made of the above magnetic head slider material prepared to match the dimensions of this groove is fitted into each groove in one direction.

At this time, it is desirable to prepare the dimensions of the rectangular piece and the grooves in advance so that the rectangular piece can be firmly fitted into each groove without using a resin adhesive or the like. Of course, an adhesive can also be used to ensure a secure connection between the rectangular piece and the groove.

After this, if the rectangular piece is cut at the end of the groove perpendicular to the groove in which it is fitted, and at the center between the rectangular pieces fitted in each groove, the 1-shaped slider will be cut at once. Manufactured in large numbers.

As described above, in the method according to the present invention, a large number of high-strength single-shaped sliders, which are advantageous for automation in manufacturing magnetic heads, can be simultaneously manufactured using simple techniques such as groove machining, fitting, and cutting.

In addition, in the present invention, by appropriately adjusting the depth of the groove, groove width, groove processing interval, and rectangular size, the dimensions can be adjusted.
Single-piece sliders with different shapes are manufactured.

At this time, single-shaped sliders having various dimensions and shapes, such as groove depth, groove width, and groove machining interval, are manufactured all at once in one plate-shaped body.

(Embodiments) Hereinafter, preferred embodiments of the method for manufacturing a single-shaped slider according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the working process of a first embodiment of the present invention. As shown in the figure, a slider material for a magnetic head is first filled in a predetermined mold and then heated and compressed to produce a substantially rectangular plate-like body 1 (not shown in FIG. 1A). Since this plate-shaped body 1 has a simple shape with no irregularities, high pressure can be applied when compressing it, and as a result, its strength becomes extremely high.

Next, on one side of the plate-shaped body 1 formed in this way]
7. As shown in FIG. 1(B), a plurality of grooves 2 are formed by cutting in one direction at the same intervals, the same width, and the same depth.

Similarly 1. As shown in FIG. 1C, a plurality of grooves 3 having the same width and depth are formed at the same intervals in a direction perpendicular to the groove 2. Next, a resin adhesive was applied to the inner surfaces of these grooves 3.

On the other hand, a plate-shaped body prepared from the same material as above is cut in the same direction at multiple locations to form rectangular pieces 4 having the same dimensions as the width and depth of the groove 3, and each of these rectangular pieces 4 is cut in the same direction as shown in FIG. As shown in (D), it is fitted into each groove 3 coated with the resin adhesive and fixed. In this state, the outer surface 41 of the rectangular piece 4 and the convex surface 41 of the plate-shaped body 1 are mirror-finished as required.

Next, dotted line 5 (end of groove 2) and dotted line 6 in FIG. 1(D)
(The center portion between each rectangular piece 4) is cut, thereby producing a single-shaped slider 7 as shown in FIG. 1(E).

Two single-shaped sliders 7 obtained as described above are used as shown in FIG. 2, and the two single-shaped sliders 7.7
They are integrated by sandwiching the composite core 10 between them. At this time, the central leg 10a of the composite cores 1, 0 and the 4 rectangular pieces of the single-shaped slider 7 come into close contact with each other, thereby supporting the leg 1-Oa.

In the above-described embodiment, the plate-shaped body was cut at equal intervals, but the present invention is not limited to this, and for example, as shown in FIGS. W1~W
4 to form grooves 3a and 3b, and rectangular pieces 4 of different widths corresponding to the grooves 3a and 3b.
17 may be used so that the grooves 3a and 4b are mounted in the grooves 3a and 3b.

By doing so, it is possible to obtain single-shaped sliders having a plurality of sizes and shapes at the same time.

Furthermore, in the present invention, a plate-like body having a thickness twice as thick as the thickness of the above-mentioned plate-like body is used, and the above-mentioned grooves 2 and 3 are processed on both sides of this plate-like body (7. A rectangular piece may be fitted into the groove 3, in which case the cut is made in the center of the plate before or after the cut along the dotted line 5.6.

(Effects of the Invention) According to the manufacturing method according to the present invention detailed above in 1-1, it is possible to simultaneously manufacture a plurality of single-shaped sliders from a large plate-shaped body, and the manufacturing cost of single-shaped sliders can be reduced. can be significantly reduced.

In addition, it is possible to manufacture extremely small, single-shaped sliders with complex shapes without using molds, with extremely good dimensional and shape accuracy, and with high productivity, thanks to the automation of magnetic head manufacturing. It becomes even more advantageous.

Furthermore, T''7: mold sliders having various sizes and shapes can be manufactured at the same time without using a mold, which greatly improves productivity.

Further, since it is easy to strongly manufacture a large plate-like body, the method according to the present invention allows manufacturing a strong single-shaped slider.

Furthermore, since there is no cut portion on the contact surface of the slider to the magnetic recording medium, there is no risk of scratching the recording medium.

Note that product management can be made extremely easy by storing the product in a warehouse or the like before it is cut into individual single-shape sliders.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the method according to the present invention in the order of steps, FIG. 2 is an exploded perspective view showing an example of how a single-shaped slider is used, and FIG. 3 is a diagram showing another embodiment of the method according to the present invention. FIGS. 4 to 6 are diagrams showing embodiments in the order of steps, and FIGS. 4 to 6 are diagrams showing conventional examples. 1...Plate body 2.3. :3a, 3b...groove 4.4a, 4b...rectangular piece 5.6...cutting point 7...1-shaped slider

Claims (1)

[Claims] A plurality of grooves are machined in two directions orthogonal to the surface of the plate-shaped body, and a rectangular piece approximately matching the groove is fitted into each groove in one direction, and then the ends of each groove in the other direction and A T for a magnetic head, characterized in that the T is cut at the center between each of the rectangular pieces or at each of these parts and the center of the plate-like body.
A method of manufacturing a letter-shaped slider.