JPH0192921A - Manufacture of composite type floating magnetic head - Google Patents

Abstract

PURPOSE:To obtain high quality and high yield by cutting off a core chip whose track width only is processed into two parts, inserting them into a slit provided to each of I and U sliders and forming a gap after glass is used for fixation. CONSTITUTION:The core chip whose track width only is cut off into two parts and inserted into each slit 4 of the I slider 1a and the U slider 1b made of a nonmagnetic material, glass is filled to fix the core chip 3. Then the working for forming the gap and the working for forming the slider are applied to manufacture the chip thereby forming the gap and the gap is visible from the side face. Thus, the gap depth in the grinding of the running face is worked accurately and easily to obtain a floating magnetic head with high reliability and high performance.

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.

[Summary of the invention]

In manufacturing a composite floating magnetic head used in a fixed magnetic disk drive, the present invention involves cutting a core chip into two parts, which are machined only for the track width, and forming slits in each of a Nislider and a U-slider made of a non-magnetic material. We provide a manufacturing method that can stably obtain high quality and high yield by inserting the chip into the glass and fixing the tip that allows the glass to flow in, and then processing the gap formation and slider shape. It is something to do.

[Conventional technology'']

As shown in FIG. 5, in the conventional manufacturing method of a composite type floating magnetic head, a slit 4 for inserting a magnetic core chip 3 into a slider 1 made of a non-magnetic material, and a notch for winding the magnetic core chip are formed in a portion. After inserting the magnetic core chip 3 with a gap formed in advance into the slit 4 as shown in the figure, the glass 2 is introduced to fix the magnetic core chip 5, and the running surface 7 is polished to close the gap of the magnetic core chip 5. The lamp part 8 is processed after the pre-builds are removed, and the core chip notch is wound around the part 5 and glued to the suspension ring.

[Problem that the invention seeks to solve]

However, in the prior art described above, the slit 4 of the slider
The gap dibs of the magnetic core chip 5 inserted into the slider cannot be seen, and furthermore, the magnetic core chip 3 is displaced when the slider 1 and the magnetic core chip 5 are fused together by the glass 2, so it is very difficult to take out the gap dibs when polishing the running surface. wisely,
In addition to being time consuming, the quality is unstable and the yield is poor. There was a problem.

The present invention is intended to solve these conventional problems.The purpose of the present invention is to enable machining while easily confirming gap dibs, and to stably achieve high quality and high yield in a short period of time. The aim is to provide a manufacturing method that can be obtained in a cost effective manner.

[Means for Solving the Problems] The method for manufacturing a composite floating magnetic head of the present invention is a composite floating magnetic head used in a fixed magnetic disk device, in which a slit groove is formed in a part of a slider made of a non-magnetic material. In a composite type floating magnetic head in which a gap-formed magnetic core chip made of a magnetic material is inserted into the slit groove and glass-fused, the core chip with only the track width processed is cut into two pieces, and a core chip made of a non-magnetic material is cut into two pieces. The core chip is inserted into a slit provided in each of the Nislider and the σ slider, glass is flowed in, the core chip is fixed, and then the gap is formed and the slider is shaped.

〔Example〕

FIG. 1 is a perspective view of a composite floating magnetic head according to the present invention. An embodiment of the present invention will be described below with reference to Figs. 2 to 4.

First, as shown in Fig. 2-(A), a slit 4 into which the core chip 5 is inserted was formed in a bar-shaped non-magnetic material varnish slider 1a (slider body), and the slit 4 was cut into two pieces as shown in Fig. 4 in the slit. The core chip 301 body 3α is inserted, the glass 2 is melted in an inert atmosphere, the non-magnetic material and the core chip are fixed, and then the Nislider 1a is inserted as shown in FIG. 2(B).
A U-groove 9 is formed on the nickel slider, and the joint surface 10 with the σ slider 1b shown in FIG. Figure 2 - (C) by adjusting the track width.
The gap portion 6 is formed by fusing with the glass 2 as shown below. Next, the fused slider is extended and the slider side end face is ground down, the running surface 7 is shaped and the back groove 12 is processed, and the running surface 7 is polished and the ramp part 8 is formed while measuring the gap dibs from the side surface. After processing, the slider shown in Figure 1 is completed.

FIG. 3 is a diagram showing the processing order of the U slider 1.6 (winding section slider) which is glass-fused to the varnish slider 1a.

First, as shown in FIG. 5-(A), a slit 4 into which the core chip 301 body 3h is inserted and a U-groove 13 in a direction perpendicular to the slit are formed in the same bar-shaped non-magnetic material as the Nislider 1a. One piece 3b of the core chip 3 cut into two parts shown in Fig. 4 is inserted into the slit as shown in Fig.-(υ), and the glass 2 is melted to fix the non-magnetic material and the core chip, and the bonded surface with the Nislider 1a. Polish 14 to complete the U slider.

FIG. 4 is a diagram showing the order of processing steps for the core chips 3α and 6b inserted into the slits 4 of the varnish slider 1a and the U slider 1b. First, as shown in Figure 4 (A), is there a moth on the thickened ferrite, which is a magnetic material? Su rod fixed i'11
5, the back groove 16, and the track groove 17 are processed,
As shown in FIG. 4-(B), glass 2 is melted and filled into the track groove. Next, as shown in FIG. 4-(0), the core chips 3α and 3h are cut into the varnish slider 1a, the σ slider 1b, and the core chips 3α and 3h that fit into the respective slits, and the core chips are polished to increase their thickness and the core chips are completed.

〔Effect of the invention〕

As described above, according to the present invention, a core chip processed only in track width is cut into two pieces, inserted into the noslits of each of the Nislider and U slider made of a non-magnetic material, and glass is flowed in to separate the core chip. After they are fixed, the gap can be formed with the slider and core chip integrated by manufacturing the gap by processing the gap and shaping the slider. Furthermore, since the gap can be seen from the side, it is easy to create a gap when polishing the running surface. This has the effect that the bus can be processed accurately and easily, and a highly reliable and high-performance floating magnetic head can be produced.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a composite floating magnetic head of the present invention. FIGS. 2(A) to 2(D) are process diagrams of the slider processing shown in FIG. 1. FIGS. 3(A) and 3(B) are process diagrams for machining the U slider shown in FIG. 4(A) to 4(C) are process diagrams for processing the core chip in FIG. 1. FIG. 5 is a perspective view of a conventional composite floating magnetic head; FIG. 6 is a perspective view of the shape of the core chip shown in FIG. 5; 1...Slider 1a...Nice slider 1b...σ Slider 2...
...Glass 3...Magnetic core chip 3α..., Nislider insertion core chip 3b...U slider insertion core chip 4... ... Slit 5 ... Magnetic core chip notch 6 ...
...Gap portion 7...Slider running surface 8...
...Slider ramp part 9...Nisslider U groove 10...Old...Joint surface with U slider 11...Glass fixing cut part 12.・・・
...Slider back groove 13...
U slider tril 114...... Joint surface with varnish slider 15... Glass fixing groove 16... Core chip back groove 17...
...Track grooves and above Applicant: Seiko Even Co., Ltd. 1 Figure (C) Thatch 2 Figure (8) CB) Thatch 3 Figure 4

Claims (1)

[Claims] A composite type floating magnetic head used in a fixed magnetic disk drive. A slit groove is provided in a part of a slider made of a non-magnetic material, and a magnetic core chip made of a magnetic material with a gap formed therein is inserted into the slit groove. In the assembled composite floating magnetic head, the core chip with only the track width processed is cut into two pieces, and inserted into slits provided in each of the slider body 1a and the winding slider 1b made of a non-magnetic material, and glass is introduced into the head. 1. A method for manufacturing a composite floating magnetic head, which comprises manufacturing a composite floating magnetic head by fixing a core chip thereon and then performing processing for forming a gap and processing for a slider shape.