JPS63291203A - Method for grinding magnetic head - Google Patents

Abstract

PURPOSE:To facilitate mounting work at the time of loading a magnetic head unit on a cylinder actually, by loading the magnetic head unit after forming a grinding disk in double stage structure on the grinding disk by applying position regulation. CONSTITUTION:The magnetic head unit is loaded on a first grinding disk 2 by applying the position regulation, and next, the first grinding disk 2 is loaded by applying the position regulation on a second grinding disk 3 as bringing the bottom plane of the first grinding disk 2 and at least another one plane into contact with the second grinding disk 3 and sliding the first grinding disk 2 on the second grinding disk 3. In other words, it is possible to finish so as to always set the apex position of the curvature of a head sliding plane in a sliding direction at a constant position for the lower end plane of the head unit 1 to perform the perfect position regulation of the head unit 1 and to grind the head unit. In such a way, the mounting work at the time of loading the head unit 1 on the cylinder can be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of polishing a rotating head type magnetic head.

BACKGROUND OF THE INVENTION In recent years, head units of rotating head type magnetic recording systems have been downsized as the Schilling diameter has become smaller. The head chip bonded to the head base is finished by polishing the head sliding surface with lapping tape.

An example of the conventional method of polishing the sliding surface of a magnetic head will be described below with reference to the drawings. Figure 5 shows
FIG. 2 is a schematic diagram of a polishing device for a magnetic head sliding surface. In FIG. 5, 4 is an upper cylinder, 5 is a lower cylinder, and 3 degrees is a polishing disk, which is supported by the upper cylinder 4 and the lower cylinder 5 and rotates at high speed in the direction of arrow a. , 6 are wrapping tapes that are wound at low speed in the direction of the arrow.

7 is a tape guide. FIG. 6 is a diagram of the head unit, in which a head chip 8 is bonded to a head base 9. Figure 7 shows a conventional polishing disk.
al is a plan view, Fig. 7 (bl is a front view. In Fig. 7, the conventional polishing disk 3° has a circular outer periphery and a concave groove in it, and the hend unit is directly inserted into this concave groove.)
It was equipped with 1.

Distance T from the outermost circumference of the polishing disk to the tip of the head chip when polishing the head sliding surface.

In order to adjust the protrusion Wk (hereinafter referred to as protrusion Wk), slide the head unit back and forth in the groove using one surface of the groove of the polishing disk and one end surface of the head unit as a regulating surface (falOC surface in Fig. 7). and set the protrusion @T',
The head unit 1 was attached to a polishing disk 3' with screws, and the head sliding surface was polished by attaching the polishing disk 3° to a polishing device as shown in FIG.

Problems to be Solved by the Invention However, with the conventional polishing disk configuration as described above, as the head unit becomes smaller, there are problems such as difficulty in workability when directly mounting the head unit on the polishing disk, and problems with protrusion. When adjusting the amount, the head unit is installed at an angle from the regulating surface in the concave groove of the polishing disk.
Therefore, as shown in FIG. 8, the curvature of the head sliding surface in the sliding direction is eccentric with respect to the lower end surface B of the head unit, and the apex of the curvature is shifted from the position of the head gap. When mounting such a head unit on an actual cylinder, there is a problem in that it is extremely difficult to adjust the installation.

In view of the above-mentioned problems, the present invention polishes the head sliding surface so that the apex position of the curvature in the sliding direction of the head sliding surface is constant, and when mounting it on an actual cylinder, the installation is done by a manual labor. The purpose of the present invention is to provide a head polishing method that facilitates polishing.

Means for Solving the Problems In order to solve the above problems, the magnetic head polishing method of the present invention has a two-stage structure for the polishing disk on which the magnetic head unit is mounted. In this method, the head unit is mounted on a polishing disk in a precisely controlled position.

Effect of the present invention As described above, the polishing disc has a two-stage structure of the first polishing disc and the second polishing disc,
This is a method of polishing a magnetic head. First, even if the head unit becomes smaller, the head unit is attached to the relatively larger first polishing disk, and then the small head unit is directly attached to the circular polishing disk. This eliminates the difficulty of adjusting the amount of protrusion. Furthermore, the first polishing disk is mounted on the second polishing disk in a controlled position, and the amount of protrusion is adjusted while sliding the first polishing disk on the second polishing disk. This prevents the head unit from tilting and attaching.

EXAMPLE Hereinafter, a method of polishing a magnetic head sliding surface using a polishing disk according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram of a polishing disk in one embodiment of the present invention.

FIG. 1 (al in FIG. 1 is a plan view thereof) is a front view.

In FIG. 1, 1 is a head unit, 2 is a first polishing disk of the present invention, and 3 is a second polishing disk of the present invention.About the polishing disk configured as 0 or more, A method of adjusting the amount of protrusion of the magnetic spatula during polishing of the sliding surface of the magnetic spatula will be described with reference to FIGS. 1 to 4. FIG. 2 shows the first polishing disk of the present invention and the second polishing disk.
Figure fat is its plan view, and Figure 2 (bl is its side view).

As shown in FIG. 2, the first polishing disk is plate-shaped and has a step at its tip for attaching a head unit. FIG. 3 is a diagram showing the head unit attached to the first polishing disk with screws. At this time, the third
The stepped cross-section of the first polishing disk shown in the figure and the lower end of the head unit are used as regulating surfaces (side B in Fig. 3) for attachment. Fig. 4 fat is its plan view, and Fig. 4 f is a polishing disk.
b) is a front view.

As shown in FIG. 4, the second polishing disk is provided with a groove in the center for mounting the first polishing disk.

FIG. 1 is a diagram showing the first polishing disk mounted on the second polishing disk.

In FIG. 1, in the concave groove part of the second polishing disk 3,
A plate-shaped first polishing disk is mounted, one surface of the concave groove and one end surface of the first polishing disk are used as regulating surfaces (falOA surface in FIG. 1), and the first polishing disk is is slid back and forth in the concave groove of the second polishing disk to adjust the protrusion i1T of the head chip, and the first polishing disk is attached to the second polishing disk with screws. The polishing disk as described above is attached to the polishing apparatus as shown in FIG. 5, and the head sliding surface is polished.

As described above, according to this embodiment, by fixing the head unit to the first polishing disk, even if the head unit becomes smaller, the amount of head chip protrusion can be adjusted by operating the first polishing disk. The workability is good because all you have to do is make adjustments.Furthermore, one end surface of the first polishing disk and one surface of the concave groove of the second polishing disk are used as regulating surfaces, and a relatively large contact surface is used. The amount of protrusion can be adjusted by sliding the first polishing disk, so compared to the conventional method of attaching a small head unit directly to the second polishing disk and adjusting the amount of protrusion, the head This prevents the unit from tilting and attaching.

Therefore, if the head sliding surface is polished by the magnetic head polishing method according to this embodiment, the apex position of the curvature of the head sliding surface will be on the head gap and on the lower end surface B of the head unit, as shown in FIG. It can be polished to a certain position relative to the surface.

In addition, the polishing method of this embodiment is applicable as the head unit becomes smaller, that is, the diameter of the polishing disk becomes smaller.
The effect increases as the cylinder diameter becomes smaller, such as 30 mm, 20 mm, and 15 mm. When mounting a head unit on an actual cylinder, the smaller the cylinder diameter, the lower the apex position of the curvature of the head unit's sliding surface. Since precision is required, this method meets it. When the magnetic head polished in this way was actually mounted in a small cylinder and its characteristics were investigated, it was possible to obtain a good reproduction envelope waveform.

Effects of the Invention As described above, the present invention firstly regulates the position of the head unit and mounts it on the first polishing disk, and then similarly restricts the position of the first polishing disk to adjust the amount of protrusion. while loading it onto the second polishing disc. For this reason, since polishing is performed with the head unit completely regulated in position, the apex position of the curvature of the head sliding surface in the sliding direction is always at a constant position with respect to the lower end surface of the head unit. This makes the work of actually mounting this head unit on a cylinder much easier.

As described above, the magnetic head polishing method of the present invention is most suitable for finishing the apex position of the curvature in the sliding direction of the head sliding surface at a constant level, and has great effects.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a polishing disk according to an embodiment of the present invention;
Fig. 2 is an external view of the second polishing disc of the present invention;
The figure is an external view when the head unit is mounted on the first polishing disk, FIG. 4 is an external view of the second polishing disk of the present invention, FIG. 5 is a schematic diagram of the polishing device, and FIG. An external view of Head Unisoto, Fig. 7 is a configuration diagram of a conventional abrasive disk, Fig. 8 is an external view of a head unit polished with a conventional abrasive disk, and Fig. 9 is an external view of a head unit polished with the abrasive disk of the present invention. FIG. 3 is an external view of a polished head unit. DESCRIPTION OF SYMBOLS 1... Head unit, 2... First polishing disk, 3... Second polishing disk. Name of agent: Patent attorney Toshio Nakao co-director. Floating Castle 161

Claims (1)

[Claims] A method of polishing a sliding surface of a magnetic head with a lapping tape by rotating a magnetic head unit, the magnetic head unit being mounted on a first polishing disk in a regulated position, and then The bottom surface of the abrasive disk and at least another surface of the abrasive disk are in contact with the second abrasive disk, and the first abrasive disk is slid while the first abrasive disk is slid over the second abrasive disk. A method for polishing a magnetic head, characterized in that the magnetic head is mounted on a second polishing disk in a controlled position.