JPH03232173A - Manufacture of magnetic head slider - Google Patents

Abstract

PURPOSE:To keep a stable floating attitude even at a low floating quantity without use of the processing technology requiring special and expensive installation by forming the width of an air flowout end of an air bearing face narrower than the width of the air flowin end side by means of the cutting processing. CONSTITUTION:Outer edges 6a, 6b of air bearing faces 2a, 2b have a step difference on its way so as to make the width of air flowout ends 5a, 5b narrower than the width of air flowin ends 4a, 4b. In order to form the shape in this way, step difference parts 9a, 9b leaving a curved shape of a grinder are formed by detaching the cutting grinder from the magnetic head slider on its way of a same processing as the cutting processing process by slots 8a, 8b and 8c. Thus, the slider is shaped in the same process as the cutting process of other parts and a stable floating attitude is kept even at a low floating quantity without need of any special and expensive installation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head for a magnetic disk drive, and more particularly to a method of manufacturing a magnetic head slider used in a hard disk drive.

[Conventional technology]

The magnetic head slider currently most commonly used in hard disk drives has two parallel flat air bearing surfaces with a tapered air inflow end (hereinafter referred to as a tapered flat slider). In a situation where magnetic storage density is increasing year by year, there is an urgent need to reduce the flying height (the gap between the medium and the slider). The flying height of the tapered flat slider currently in practical use is about 0.2 μm to 0.3 μm, but if you try to obtain a flying height of less than this with the current taper flat slider, the pitch angle will decrease and it will not be stable. It was extremely difficult to maintain levitation.

Therefore, in order to solve this problem, a slider was proposed that could secure a predetermined pitch angle even at low flying heights and ensure a stable flying state (Japanese Patent Laid-Open No. 62-231481
issue). This conventional slider is shown in FIG. In FIG. 3, this slider has a step formed on the inner edges of the two air bearing surfaces 2a and 2b so that the width on the air inflow end side is narrower than the width on the air outflow end side. In the figure, 3a and 3b are tapered parts, 4a and 4b are air inflow ends, and 5a
.

5b is an air outflow end, 8 is a groove portion, 9a and 9b are stepped portions, and lla and llb are electromagnetic transducers. Due to this width difference, the floating blade received by the slider 1 becomes relatively larger on the air inflow end side than on the air outflow end side, and as a result, the pitch angle becomes larger. Furthermore, by adjusting this width difference, a predetermined pitch angle can be obtained, and a stable flying posture can be maintained even at a low flying height.

[Problem to be solved by the invention]

The above-mentioned conventional magnetic head slider is located inside the air bearing surface and has a step in an oblique direction, so special equipment such as sputter etching equipment or ion milling equipment is required to form this step. , and had to use processing techniques that required expensive equipment.

[Means to solve the problem]

The method for manufacturing a magnetic head slider of the present invention includes (1) a grinding process in forming an air bearing surface of a magnetic head slider that flies above the magnetic recording medium using dynamic pressure generated by the running of the magnetic recording medium; The air bearing surface is characterized in that the width on the air outflow end side is smaller than the width on the air inflow end side.

(2) It is characterized in that the grinding process is performed from the middle of the air bearing surface.

(3) Grinding is performed in a tapered shape from the width of the air outflow end to the width of the air inflow end.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention. In FIG. 1, the magnetic head slider 1a of this embodiment is composed of an element surface 7 having two air bearing surfaces 2a and 2b and electromagnetic transducers 11a and 11b such as magnetic bodies and coils. Moreover, the air inflow ends 4a and 4 of the air bearing surfaces 2a and 2b
Tapered portions 3a and 3b are formed on the b side. Now, the outer edges 6a, 6b of the air bearing surfaces 2a, 2b have a step in the middle, so that the air outlet ends 5a, 5b
The width of the side is narrower than that of the air inflow ends 4a and 4b. In order to form the shape as described above, in this embodiment, the groove portion 8a is
, 8b and 8C, step portions 9a and 9b are formed by separating the grinding wheel from the magnetic head slider 1a in the middle, leaving the curved shape of the grinding wheel. Note that when the positions of the electromagnetic transducers 11a and llb on the element surface 7 are different, the stepped portion 9a in FIG.

9b is the inner edge 10a of the air bearing surface 2a, 2C.

Of course, it can be formed on the 10b side.

FIG. 2 is a perspective view showing another embodiment of the invention. Second
In the figure, the slider 1b of this embodiment has two air inflow ends 4a of air bearing surfaces 2a and 2b.

The width of the air outlet ends 5a and 5b is continuously ground from 4b into a tapered shape, and the tapered portion 12
a, 12b are formed.

〔Effect of the invention〕

As explained above, in the present invention, since the air bearing surface is formed by grinding, it can be formed in the same process as the grinding process for other parts, and it does not require special and expensive processes such as sputter etching or ion milling. This has the effect of easily obtaining a magnetic head slider that can maintain a stable flying posture even at a low flying height without requiring any equipment.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a perspective view showing another embodiment of the invention, and FIG. 3 is a plan view showing a conventional example. 1...Slider, 2a, 2b...Air bearing surface, 3a
3b... Taper part, 4a, 4b... Air inflow end, 5a, 5b... Air outflow end, 6a, 6b... Outer edge, 7... Element surface, 8a, 8b, 8cm groove part, 9
a, 9b...Stepped portion, 10a, 10b...Inner edge 11a, 1lb--Electromagnetic converter, 12a, 12b-
Part of the taper.

Claims (3)

[Claims] (1) In forming the air bearing surface of the magnetic head slider that flies above the magnetic recording medium using the dynamic pressure generated by the running of the magnetic recording medium, the width of the air outflow end side of the air bearing surface is formed by grinding. A method of manufacturing a magnetic head slider, characterized in that the width of the magnetic head slider is smaller than the width of the air inflow end. (2) The method for manufacturing a magnetic head slider according to claim (1), wherein the grinding process is performed from the middle of the air bearing surface. (3) The method for manufacturing a magnetic head slider according to claim (1), characterized in that grinding is performed in a tapered shape from the width of the air outflow end to the width of the air inflow end.