JPH02297705A - Production of composite type floating magnetic head - Google Patents

Abstract

PURPOSE:To allow the dealing with the higher density recording of a stationary magnetic disk device by working the narrow tracks of cores and working the cores for the magnetic head to be used on both the front and rear surfaces of a magnetic recording medium at one time. CONSTITUTION:A glass packing groove 6 is worked on one magnetic material of two bodies of the same magnetic materials 5 subjected to a shape working and after the butt surfaces of both the magnetic materials are polished, a gap is formed by welding of glass 3A and track grooves 7 for forming tracks are worked. Further, low melting glass 3B is packed into the glass packing groove 6 and the track grooves 7 to obtain a core block 4. The core block 4 is thereafter cut with high accuracy by a high-accuracy slicing machine. The cores for the magnetic head to be used on both the front and rear surfaces of the magnetic recording medium are obtd. at one time by this working. The dealing with the high-density recording of the stationary magnetic disk device by the narrow track working is possible in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floating magnetic head used in a fixed magnetic disk device, and particularly to a composite type floating magnetic head.

[Prior art 1 A conventional method for manufacturing a composite type floating magnetic head is shown in Fig. 4 (a).
), the abutting portion lO of the two same magnetic materials 5
Polish the glass to a mirror-like state, butt the polished surfaces together
A core block 4 with a gap formed therein is obtained by glass fusion bonding. Thereafter, the core block 4 is cut and polished to increase its thickness to obtain the shape shown in FIG. 4(b). Furthermore, Fig. 4 (C)
As shown in FIG. 5, L-rack processing is performed using a diamond grindstone 11 to complete the core 2 shown in FIG. 5(b).

After that, as shown in Fig. 5a, the core 2 is inserted into the slit 8 of the slider l, the slider l and the core 2 are fused using a low melting point glass rod, and the gap depth is processed by grinding and polishing the running surface 9. Then, the trail and ramp parts are processed to complete the composite floating magnetic head.

[Problem to be Solved by the Invention 1] However, in the prior art described above, the magnetic In-track processing must be performed separately for the magnetic head core used on the front surface of the recording medium and the magnetic head core used on the back surface. In addition, it is very time consuming to attach and detach one unit from the fixing jig during track machining, and tightening causes cracks and chips in the core, which is a magnetic material, due to fixing. . In addition, when the width of the track is narrowed, cracks occur in the core track part due to processing stress, making it extremely difficult to process narrow tracks (10 μm or less). It takes time to set the glass, and the glass may become misaligned.
This poses a problem.

The present invention has been developed to solve these problems.The purpose of the present invention is to process the core for a magnetic head used on both the front and back sides of a magnetic recording medium in a single process with high quality and high yield, and to process narrow tracks. An object of the present invention is to provide a composite floating magnetic head that can handle high-density recording in a fixed magnetic disk device by processing.

[Means to solve the problem 1 The method for manufacturing the composite floating 6n air head of the present invention is as follows.

Composite type floating 1if used in fixed 6n air disk device
A composite floating magnetic head in which a slit groove is provided in a part of a slider made of a non-magnetic material, a core made of a magnetic material with tracks and gaps formed therein is inserted into the slit groove, and the core is glass-fused. The present invention is characterized in that the core can be processed with narrow tracks, and that the core for a 6n air head, which is used on both the front and back sides of a magnetic recording medium, can be processed at the same time.

[Example 1] FIG. 1 is a perspective view (a) of a composite floating magnetic head of the present invention.
) and a perspective view (b) of a magnetic core chip.1 The present invention will be explained with reference to FIGS. 2 and 3.

First, as shown in FIG. 2(a), a glass-filled groove 6 is formed in one of the two shaped magnetic materials 5, and after polishing the abutting surfaces of both magnetic materials, the glass 3A A gap is formed by melting the snow at the site, and 7 tracks are processed to form the track. Furthermore, the glass filling groove 6
A core block 4 is obtained by filling the entire track 7 with low melting glass 3B. Thereafter, as shown in FIG. 2(b), the core block 4 is cut with high precision using a high precision slicing machine.

Through this processing, cores for magnetic heads used for both the front and back surfaces of a magnetic recording medium can be obtained at once. The thickness of the cut core 2 and the dimensions in the track are finished by lapping both sides, resulting in the completed core shown in FIG. 1(b). At this time, the track portion is reinforced with low melting point glass 3B, which prevents cracks and chips in the track portion and allows for a narrow track finish.
Next, as shown in FIG. 3(a), the core 2 is inserted into the slit groove 8 provided in a part of the slider 1, and the low melting point glass 3B is melted in an inert atmosphere to melt the slider 1 and the core 2. Then, the state shown in FIG. 3(b) is established. then slider l
Machining the gap depth by grinding and polishing the running surface 9,
Trail machining 927 parts machining and blend machining
The composite floating magnetic head shown in Figure (a) is completed.

[Effects of the Invention] As described above, according to the present invention, a slit groove is provided in a part of the slider made of a non-magnetic material, and a core formed with a track and a gap made of a magnetic material is inserted into the slit groove. In a composite type floating magnetic head that is inserted and glass-fused, the narrow track processing of the core and the core for the magnetic head used on both the front and back sides of the magnetic recording medium are processed at the same time. It becomes possible to respond to changes in In addition, there were cracks in the track section of the core.
Stable high quality can be obtained because no chips occur. In addition, since the core is filled with low melting point glass in advance, there is no need to set low melting point glass in a 1:11 ratio when melting snow between the slider and the core (setting time can be reduced. Furthermore, by cutting the core, both the front and back sides of the magnetic recording medium can be used. Since the core for the magnetic head used in the magnetic head can be processed in one go, the investment in facilities such as track processing machines and jigs can be reduced.

[Brief explanation of the drawing]

FIG. 1(a) is a perspective view of a composite type floating magnetic head of the present invention. FIG. 1(b) is a perspective view of the magnetic core chip of FIG. FIGS. 2(a) and 2(b) are process diagrams for manufacturing a magnetic core chip according to the present invention. FIGS. 3(a) and 3(b) are manufacturing process diagrams of the magnetic head according to the present invention. FIGS. 4(a), 4(b), and 4(c) are process diagrams for manufacturing conventional m-core chips. FIGS. 5(a) and 5(b) are diagrams showing a conventional glass fusing method. l...Slider mite 2...Magnetic core chip 3A...Fusing glass 3B...Low melting point glass 4...Core block 5... &n-type material 6...Glass filling groove 7...Track groove 8... Slit full 9...Slider running surface 10...Abutment part 11...Diamond whetstone or above Applicant: Seiko Epson Co., Ltd. Agent Patent attorney: Kizobe Suzuki (and 1 other person) ) ¥ 1 Snake ((X) ¥ 21 ¥ 11 (revised) Cb) Blind 1 (bn (C)'' ¥ 41

Claims (1)

[Claims] A composite type floating magnetic head used in a fixed magnetic disk device, in which a slit groove is provided in a part of a slider made of a non-magnetic material, and a magnetic core chip (hereinafter referred to as a core ) is inserted and glass fused to form a composite type floating magnetic head, which is characterized by narrow track processing of the core and processing of the core for the magnetic head used on both the front and back sides of the magnetic recording medium at the same time. A method for manufacturing a composite floating magnetic head.