JPH08221730A - Production of magnetic head device - Google Patents

Abstract

PURPOSE: To obtain a process for producing a magnetic head device capable of improving the rigidity of the magnetic head piece itself, working the magnetic head piece in an easy-to-handle state, welding the piece to integral type sliders with glass and preventing the deformation of the magnetic head piece itself at the time of welding with the glass. CONSTITUTION: The magnetic head piece 1 formed by integrating two pieces is made to piece respective holes 4a and 5a of the two sliders 4 and 5 disposed to face their respective sliding surface sides each other. Next, the magnetic head piece 1 is welded and fixed into the respective holes 4a and 5a with a welding glass 2 and 3. Finally, the center of the magnetic head piece 1 is cut with a grinding wheel 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a magnetic head device suitable for application to, for example, a magnetic head of a floppy disk drive used as an external storage device of a computer.

[0002]

2. Description of the Related Art In recent years, for example, in the field of magnetic heads of floppy disk drive devices used as external storage devices for computers, demands for reduction in the number of parts and cost reduction have become stronger as the size and weight have been increased. There is.

Therefore, it is necessary to further simplify the manufacturing method of the magnetic head of the floppy disk drive device in order to reduce the cost.
Therefore, conventionally, the magnetic head device has been completed by inserting the magnetic head piece into the integrated slider, welding the glass, and processing the sliding surface to simplify the manufacturing method.

A conventionally manufactured magnetic head device will be described below. FIG. 5 is a plan view of a conventional magnetic head device, viewed from the sliding surface side of a floppy disk. As shown in FIG. 5, the magnetic head device is composed of a composite structure in which a magnetic head piece is incorporated in a slider. The magnetic head piece 10 is shown in FIG.
As also shown in the enlarged view of 1., an erasing magnetic core 10a having an erasing magnetic gap and a recording / reproducing magnetic core 10b having a recording / reproducing magnetic gap are fused and fixed by a welding glass 10c.

The magnetic head piece 10 has a hole provided in the integrated slider 9 (as shown in the figure, the integrated slider 9 is provided with two elongated island-shaped projections at the top and bottom,
A rectangular hole is provided in the upper convex portion. ), It is inserted with a little gap. As shown in the enlarged view, the gap between the magnetic head piece 10 and the wall surface of the hole of the integrated slider 9 is filled with the welding glass 10e, and the magnetic head piece 10 is integrated into the integrated slider 9
It is fixed by welding to the hole.

Next, a method of welding and fixing the magnetic head piece 10 and the integrated slider 9 with the fused glass 10e will be described. FIG. 6 shows a magnetic head piece 10 that has been conventionally used in manufacturing a magnetic head device, and the magnetic head piece 10 is seen from an oblique direction. As described above, the magnetic head piece 10 is formed by welding and fixing the erasing magnetic core 10a and the recording / reproducing magnetic core 10b with the welding glass 10c, and the erasing magnetic gap and the recording / reproducing magnetic gap are
It is on the upper end surface of the magnetic head piece 10 in the drawing.

As shown in FIG. 7, the above-described magnetic head piece 10 is prepared by applying an adhesive agent on one side of the magnetic head piece 10 and arranging and adhering it on a table. The plurality of magnetic head pieces 10 adhered and fixed on the table are polished by a polishing device on the surface opposite to the surface fixed and adhered on the table. Then, it is polished to a certain roughness and made into a smooth surface. This polishing step is for improving the adhesion between the foot portion of the magnetic head piece and the back core in the assembly step of the magnetic head device. Therefore, it is sufficient to polish the magnetic head piece only on one surface of the magnetic head piece.

The magnetic head piece 10 polished as described above is inserted into the hole 11a of the integrated slider 11 as shown in FIG. Since the hole 11a is formed larger than the cross section of the magnetic head piece, a gap is formed between the magnetic head piece 10 and the wall surface of the hole 11a of the integrated slider.

Next, as shown in FIG. 8, a solid glass 12 is placed on the upper end of the magnetic head piece 10. In this state, it is placed in a heating furnace and heated to a temperature equal to or higher than the melting point of the fused glass 12 to melt the fused glass 12. The melted fused glass 12 has a reduced viscosity and thus becomes fluid, and evenly spreads through the gap between the magnetic head piece 10 and the wall surface of the hole 11a of the integrated slider 11 due to the capillary phenomenon. After that, by gradually cooling in this state, the fused glass is solidified and the magnetic head piece 10 is fixed in the hole 11a of the integrated slider 11. As described above, in the magnetic head device of the floppy disk drive device, the cost of the product can be reduced by promoting the simplification of the manufacturing method.

[0010]

However, in the above-described conventional method for manufacturing a magnetic head device, the magnetic head piece has a small size and a small rigidity, and therefore has a drawback that the magnetic head piece is easily broken during processing and handling. That is, as shown in FIG. 6, since the magnetic head piece has a small depth amount of less than 200 μm, it has no rigidity,
The magnetic head piece as shown in FIG. 7 has a drawback that it is difficult to process and handle by side surface processing and adhesive fixing work, and it is easily broken.

Further, there is a concern that the magnetic head piece may be deformed when the glass is welded to the integrated slider. That is, as shown in FIG. 5, when melting the fused glass 10e to fix the magnetic head piece 10 in the hole of the integrated slider 9, the erasing magnetic core 10a and the recording / reproducing magnetic core 10b are fixed by welding. In addition, the fused glass 10c may be melted and the legs of the magnetic head piece 10 may be scattered.

The present invention has been made in view of the above problems, and the rigidity of the magnetic head piece itself is improved so that the magnetic head piece can be processed in a state where it can be easily handled, or can be welded to a glass with an integral slider. An object of the present invention is to provide a method of manufacturing a magnetic head device capable of preventing the deformation of the magnetic head piece itself during glass welding.

[0013]

According to the method of manufacturing a magnetic head device of the present invention, a magnetic head piece in which two magnetic head devices are integrated is provided in each hole of two sliders whose sliding surfaces face each other. This is a method including a step of penetrating, a step of welding and fixing the magnetic head piece to each hole with welding glass, and a step of cutting the center of the magnetic head piece.

Further, in the method of manufacturing a magnetic head device of the present invention, a step of penetrating two magnetic head pieces, which are integrated, into a hole of a slider, which is integrated with the sliding surfaces facing each other. And a step of welding and fixing the magnetic head piece to the hole with a welding glass, and a step of cutting the center of the slider.

[0015]

According to the method of manufacturing a magnetic head device of the present invention, a step of penetrating a magnetic head piece, in which two magnetic head devices are integrated, into respective holes of two sliders, the sliding surfaces of which face each other, The method includes a step of welding and fixing the magnetic head piece to each hole with welding glass, and a step of cutting the center of the magnetic head piece. Here, since the magnetic head piece corresponds to one in which two conventional magnetic head pieces are bonded and integrated, it is easy to handle and the rigidity of the magnetic head piece itself is improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method of manufacturing a magnetic head device according to the present invention will be described below with reference to FIGS. First, the magnetic head device manufactured according to this example will be described. The magnetic head device of this example has the same configuration as the magnetic head device described in the conventional example. That is, the magnetic head device of the present example is composed of a composite structure in which the magnetic head piece 10 is incorporated in the slider as described with reference to FIG. The magnetic head piece 10 comprises an erasing magnetic core 10a having an erasing magnetic gap and a recording / reproducing magnetic core 10b having a recording / reproducing magnetic gap, which are fused and fixed to each other with a welding glass 10c.

The magnetic head piece 10 is inserted into a hole provided in the integrated slider 9 with a slight clearance. As shown in the enlarged view of FIG. 5, the magnetic head piece 1
The gap between 0 and the wall surface of the hole of the integrated slider 9 is filled with a welded glass 10e, whereby the magnetic head piece 10 is welded and fixed to the hole of the integrated slider 9.

Next, a method of welding and fixing the magnetic head piece 10 and the integral slider 9 with the welding glass 10e will be described. FIG. 2 shows the magnetic head piece 1 used in this example, and the magnetic head piece 1 is seen from an oblique direction. As described above, the magnetic head piece 1 is formed by welding and fixing the erasing magnetic core 1a and the recording / reproducing magnetic core 1b with the welding glass 10e.

Comparing the magnetic head piece described in the conventional example (see FIG. 6) with the magnetic head piece 1 used in this example, it can be seen that the conventional magnetic head piece has three legs. The magnetic head piece 1 used in this example has six legs. That is, the magnetic head piece 1 used in the present example corresponds to one in which two conventional magnetic head pieces are integrated by sticking together the upper end surfaces having the magnetic gaps. Therefore, as shown in FIG. 2, each foot has three legs in the left-right direction in the drawing. Therefore, in the surface direction perpendicular to the longitudinal direction of the foot portion of the magnetic head piece 1, the magnetic head piece 1 is
By cutting the central part in the longitudinal direction and polishing the cut surface, two left and right parts corresponding to the conventional magnetic head piece 10 described with reference to FIG. 6 can be formed.

As shown in FIG. 3, the above-mentioned magnetic head piece 1 has an adhesive applied to one side of the magnetic head piece 1,
Arrange them on the table and fix them with adhesive. The plurality of magnetic head pieces 1 adhered and fixed on the table are polished by a polishing device on the surface opposite to the surface adhered and fixed on the table. Then, it is polished to a certain roughness and made into a smooth surface. This polishing step is for improving the adhesion between the foot portion of the magnetic head piece and the back core in the assembly step of the magnetic head device.

Since this magnetic head piece 1 corresponds to one in which two conventional magnetic head pieces are attached to each other and integrated, the rigidity of the magnetic head piece itself is improved and the magnetic head piece can be processed in a state where it is easy to handle. . In this example, the polishing of the magnetic head piece is performed on both sides of the magnetic head piece.

The magnetic head piece 1 polished as described above is inserted into the holes 4a and 5a of the two integrated sliders 4 and 5, respectively, as shown in the glass welding step 1 of FIG. Fixed to. Since the holes 4a and 5a are made larger than the cross section of the magnetic head piece 1, a gap is created between the magnetic head piece 1 and the wall surfaces of the holes 4a and 5a.

Next, the fused glass 2 in a solid state is placed on the gap between the integrated slider 4 and the integrated slider 5 near the hole 4a of the integrated slider 4. In this state, it is placed in a heating furnace and heated to a temperature equal to or higher than the melting point of the fused glass 2. By this heating, the fused glass 2 is melted. Since the melted fused glass 2 has a reduced viscosity, it has fluidity,
Further, due to the capillary phenomenon, the magnetic head piece 1 and the holes 4a and 5a of the integrated sliders 4 and 5 are evenly distributed in the gaps formed between the upper wall surface in the drawing.
It should be noted that to what extent the viscosity of the glass needs to be lowered depends on the size of the gap between the hole of the integrated slider and the head piece, and therefore the temperature condition may be appropriately selected. After that, by gradually cooling in this state, the fused glass is solidified, and the magnetic head piece 1 is integrated into the integrated sliders 4 and 5.
Fixed in the holes 4a and 5a.

Next, as shown in the glass welding step 2 of FIG. 1B, the directions of the glass-welded integrated sliders 4 and 5 are turned upside down. The fused glass 3 in a solid state is placed on the gap between the integrated slider 4 and the integrated slider 5 near the hole 4a of the integrated slider 4. In this state,
It is placed in a heating furnace and heated to a temperature above the melting point of the fused glass 3. By this heating, the fused glass 2 is melted. Since the melted fused glass 3 has a reduced viscosity, it has fluidity,
Further, due to the capillarity, the magnetic head piece 1 and the holes 4a and 5a of the integrated sliders 4 and 5 are evenly distributed in the gaps formed between the upper wall surface in the drawing. Thereafter, by gradually cooling in this state, the fused glass is solidified and the magnetic head piece 1 is fixed in the holes 4a and 5a of the integrated sliders 4 and 5.

Next, as shown in the two-division processing step of FIG. 1C, the magnetic head piece 1 to which the integrated sliders 4 and 5 are fixed by welding is cut with a grindstone 6 to form an integrated type with each integrated slider 4. Separate into sliders 5. Further, the sliding surfaces of the integrated sliders 4 and 5 are processed to complete the composite magnetic head.

From the above, according to this example, the magnetic head piece corresponds to one in which two conventional magnetic head pieces are bonded and integrated, so that the rigidity of the magnetic head piece itself is improved and the handling is improved. It can be processed in an easy state or can be glass-welded with the integrated slider. Further, since the rigidity of the magnetic head piece is improved, it is possible to prevent the magnetic head piece itself from being deformed during glass welding. Further, since the magnetic head piece can be prevented from being deformed, when a back core is bonded to the foot portion of the magnetic head piece to form a closed magnetic field path, it is possible to obtain stable electric characteristics in which unnecessary voids are unlikely to occur. it can.

Next, another embodiment of the method for manufacturing the magnetic head device of the present invention will be described with reference to FIG.

The integrated slider 6 used in this example is shown in FIG.
As shown in, the shape corresponds to a shape obtained by joining two sliders used in the above-described embodiment. The magnetic head piece 1 is inserted into the hole of the integrated slider 6 and fixed to a fixing jig. The magnetic head piece 1 used was the same as that used in the above-mentioned examples.

Next, in the vicinity of the hole of the integrated slider 6, the solid-state fused glasses 7 and 8 are placed on the gap between the integrated slider 6 and the magnetic head piece 1. In this state,
It is placed in a heating furnace and heated to a temperature equal to or higher than the melting points of the fused glasses 7 and 8. By this heating, the fused glasses 7 and 8 are melted. The melted fused glass 7 and 8 spreads evenly over the gap between the magnetic head piece 1 and the wall surface of the hole of the integral slider 6. After that, by gradually cooling in this state, the fused glass is solidified, and the magnetic head piece 1 is fixed in the hole of the integrated slider 6.

Next, as in the above-mentioned embodiment, the center of each slider that has been welded is cut with a grindstone to separate each slider. Further, the sliding surface was processed to complete the composite magnetic head.

From the above, according to this example, the following effects can be obtained in addition to the effects obtained in the above-described embodiments. Since the integrated slider of this example has a shape in which two conventional sliders are integrated, the number of parts of the integrated slider can be halved. Therefore, the number of manufacturing steps of the magnetic head device is reduced. Further, the positional deviation of the magnetic head piece due to the gap between the magnetic head piece and the integrated slider is reduced, and the setting accuracy of the magnetic head piece is improved. Also,
Since melting of the fused glass is completed in one step, the manufacturing time can be shortened.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various other configurations can be adopted without departing from the gist of the present invention.

[0033]

As described above, according to the present invention,
The rigidity of the magnetic head piece itself is improved, and the magnetic head piece can be processed in a state where it is easy to handle, or can be glass-welded to the integrated slider. Further, it is possible to prevent the magnetic head piece itself from being deformed during glass welding. Further, when the back core is adhered to the foot portion of the magnetic head piece to form the closed magnetic field path, stable electric characteristics can be obtained. Further, the number of parts of the integrated slider can be halved, and the number of steps can be reduced in the manufacturing process of the magnetic head device. Further, the positional deviation of the magnetic head piece is reduced, and the setting accuracy of the magnetic head piece is improved. Further, the manufacturing time can be shortened.

[Brief description of drawings]

FIG. 1 is a process drawing showing an embodiment of a method of manufacturing a magnetic head device of the present invention.

FIG. 2 is a perspective view showing a magnetic head piece used in a method of manufacturing a magnetic head device of the present invention.

FIG. 3 is a perspective view showing a magnetic head piece adhered and fixed for side surface processing.

FIG. 4 is a configuration diagram showing another embodiment of the method of manufacturing a magnetic head device of the present invention.

FIG. 5 is a configuration diagram showing a conventional example of a magnetic head device.

FIG. 6 is a perspective view showing a magnetic head piece used in a conventional method of manufacturing a magnetic head device.

FIG. 7 is a perspective view showing a magnetic head piece adhered and fixed for side surface processing.

FIG. 8 is a configuration diagram showing a conventional example of a method of manufacturing a magnetic head device.

[Explanation of symbols]

 1 Magnetic Head Pieces 2, 2a, 3 Welded Glass 4, 5 Integrated Slider 4a, 5a Hole 6 Grindstone

Claims (2)

[Claims] 1. A step of penetrating a magnetic head piece in which two magnetic head pieces are integrated into respective holes of two sliders whose sliding surfaces face each other, and the magnetic head piece into the respective holes. A method of manufacturing a magnetic head device, comprising: a step of welding and fixing with a welding glass; and a step of cutting the center of the magnetic head piece. 2. A step of penetrating two magnetic head pieces integrated into a hole of a slider in which two magnetic head pieces are integrated with their sliding surfaces facing each other; A method of manufacturing a magnetic head device, comprising: a step of welding and fixing with a welding glass; and a step of cutting the center of the slider.