JPH018287Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a polishing device, and particularly to a polishing device suitable for performing curved surface processing on the head surface of a magnetic head.

As the resolution and sensitivity of magnetic heads increases, their structures become smaller and finer, so high machining accuracy is required in the machining process during the manufacturing process.

In particular, the head surface of a magnetic head has a great influence on magnetic properties, and therefore, special precision is required in machining the curved surface.

[Conventional technology]

Conventionally, the lapping of a head H having a running surface (R surface) was made by manufacturing a lapping tool J having a concave R surface opposite to the head shape, as shown in Fig. 4, and lapping the head H in the longitudinal direction as shown by arrow Y. Processing was performed using a hand wrap that slid back and forth.

[Problem that the invention attempts to solve]

In the case of the above-mentioned polishing device, due to manual polishing, imbalance of the gear depth in the longitudinal direction of the magnetic head or distortion of the R shape due to wear of the lap tool J may occur, variations in electromagnetic conversion characteristics, abnormalities in the running surface of the head, etc. There were many drawbacks such as wear and tear and damage to the magnetic tape.

[Means for solving problems]

The present invention provides a polishing device with high polishing accuracy that solves the above-mentioned problems.The present invention consists of a rotating body for placing the object to be polished on the outer periphery of the lap surface plate, and a lap surface plate. a first tapered table that holds a first tapered table; and a first tapered table that is arranged such that an inclined surface faces the first tapered table and that allows the first tapered table to slide on the inclined surface. This is done by a polishing device equipped with a second tapered table connected by a spring.

[Effect]

The above-mentioned polishing device has inclined surfaces arranged opposite each other as a mechanism for holding a lap surface plate for polishing an object to be polished, and springs are attached to each other in order to slide the first tapered table on which the lap surface plate is placed. 1 combined with
Since a pair of tapered tables is used, as the first tapered table slides, the lapping surface plate is pushed up toward the object to be polished, and as a result, the object to be polished and the surface of the lapping plate are always maintained in close contact, resulting in good polishing. A surface is obtained. Further, since the lap surface plate mounting mechanism is moved by a guide mechanism, wear on the surface of the lap surface plate becomes uniform and polishing accuracy is improved.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIGS. 1a and 1b are a front view and a side view showing an embodiment of the present invention.

The magnetic head H is fixed on the circumference of a rotating body (ring) K, and slides on the surface of the lap surface plate L while rotating, thereby being polished.

One end of the rotation axis N ₁ of the ring K is connected to a gear M ₁ , and this gear M ₁ meshes with a gear M ₃ rotationally driven by a motor M ₂ .

The other end of the rotation axis N ₁ has a bearing N ₃ with a support axis N ₂
Supported by

The lap surface plate L is placed on the first tapered table. This first tapered table _T1 is connected to a second tapered table whose inclined surfaces are arranged opposite to each other via a ball guide B.
It is connected by T ₂ and spring D. This tapered table T ₁ ,
T ₂ , the ball guide B forms a holding mechanism for the lap surface plate L.

The pair of tapered tables T ₁ and T ₂ are provided with springs D in the hollow parts W ₁ and _{W 2 as shown} in FIG. ₁ and _T2 , a force acts on the first tapered table _T1 to cause it to slide on the surface of the second tapered table _T2 , which is fixed on the adjustment table S, in the direction of arrow Z. The adjustment table S is composed of a spring-like member in which an elastic plate is folded in two.
On the opposite side from the bent portion Q, the gap G is adjusted by a screw foot V, so that the inclination of the surface of the lap surface plate L is adjusted.

A is a roller guide, which is screwed to a rotating shaft _N4 that is directly connected to the rotating shaft of a motor _M4 , and has an upper body provided with rollers _F1 to _F3 according to the forward and reverse rotation of the motor. Section AU moves in the directions of arrows X ₁ and X ₂ . Accordingly, the lap surface plate L also moves in the directions of arrows X ₁ and X ₂ .

AT is a protrusion, and when it comes into contact with detection parts C ₁ and C ₂ such as micro switches provided on the lower body part AD,
The rotation of motor _M4 is reversed. That is, the upper body part AU of the roller guide A repeats the above movement operation within the range determined by the detection parts C ₁ and C ₂ .

Polishing to form the magnetic head H shown by the solid line in FIG. 3 into the shape shown by the broken line in the figure is carried out as follows.

A magnetic head H is attached to the outer peripheral surface of the ring K, and the ring K is rotated by the rotation of the motor _M2 .
The magnetic head H has an abrasive grain supply section LT on the lap surface plate _L1 .
However, as the polishing time elapses, the amount of polishing increases, and as a result, the first tapered table _T1 is gradually moved in the direction of the arrow Z by the force of the spring D. The surface of the lap surface plate L is always kept in close contact with the polishing surface of the magnetic head H.

Since the movement of the first tapered table _T1 in the direction of the arrow Z is stopped by engagement with the stopper TS, the amount of polishing of the magnetic head is determined by setting this stop position.

As mentioned above, the roller guide A makes a reciprocating motion, and the lap surface plate L also makes a reciprocating motion, so the wear on the surface of the lap surface plate L that occurs when the magnetic head H is polished is not caused by the wear on the entire surface of the surface. It becomes uniform.

Effects of the invention In this way, the lap surface plate is held by a pair of tapered tables connected by a spring, and this pair of tapered tables is held by a roller guide, so it is always held regardless of the amount of polishing of the magnetic head. The surface of the lap surface plate and the magnetic head are in close contact, and the wear on the surface of the lap surface plate is uniform over the entire surface.
The polished surface of the object to be polished is good without loss of flatness.

[Brief explanation of the drawing]

Figures 1a and b are configuration diagrams of an embodiment of the present invention, Figure 2 is a diagram showing how the taper table is connected, Figure 3 is a configuration diagram of the magnetic head, and Figure 4 explains the conventional polishing method. This is a diagram. K: rotating body, L: lap surface plate, T ₁ , T ₂ : taper table, B: spring, S: adjustment table, A: guide mechanism.

Claims (1)

[Claims for Utility Model Registration] 1. A rotating body for placing an object to be polished on the outer periphery of the lapping surface plate, a first tapered table holding the lapping surface plate, and the first tapered table. and a second tapered table arranged such that the tapered table and the inclined surface face each other, and connected to the first tapered table by a spring so as to allow the first tapered table to slide on the inclined surface. A polishing device characterized by: 2 The second tapered table is mounted, and the second tapered table is placed on the second tapered table.
2. The polishing apparatus according to claim 1, further comprising a guide mechanism for causing the tapered table to travel.