JP2000254850A - Polishing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform polishing of a surface to be polished by effectively utilizing the whole surface of an abrasive. SOLUTION: A polishing device 1 comprises an abrasive rotational driving means 3 to rotationally drive an abrasive 2; and a material to be polished holding means 4 to hold a material to be polished with a surface 202a to be polished brought into contact with the abrasive 2 rotationally driven by the abrasive rotational driving means 3. By automatically rotating the material to be polished holding means 4, the surface 202a to be polished is moved in the radial direction of the abrasive 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing apparatus, and more particularly to a polishing apparatus suitable for polishing a terminal surface at the tip of a plastic optical fiber connector.

[0002]

2. Description of the Related Art A terminal surface at the tip of a plastic optical fiber connector is required to be mirror-finished in order to prevent an increase in optical transmission loss.

Therefore, conventionally, a mold 101 is used as shown in FIG. 10, and the mold 101 is heated, and a processing surface (mirror surface) 102 provided on one side thereof is provided with a plastic optical fiber connector 201. The terminal surface 202a at the distal end of the optical fiber 202 protruding from the distal end surface 201a is
The terminal surface 202a of the optical fiber 202 is mirror-finished according to the processed surface 102.

[0004]

SUMMARY OF THE INVENTION
Is configured by providing a clad 204 on the outer periphery of a core 203.

When the above-mentioned heating method is used, the cladding 204 melts and covers the surface of the core 203, so that the light transmission efficiency decreases.

When a single core 203 is used for the optical fiber 202, as shown in FIG.
Since only a small part of the outer periphery of the terminal surface of the core 203 is covered by the melted portion 204a of 4, the decrease in the light transmission efficiency does not cause much problem.

[0007] However, the multi-core 20
In the case of using No. 3, the cladding 204 of each core 203 melts out as shown in FIGS. 12 and 13 and covers the outer periphery of the terminal surface of each core 203, so that the light transmission efficiency of the whole core is reduced. The drop is so great that
It is difficult to apply the above heating method to a multi-core core.

Therefore, in such a case, as shown in FIG. 14, the terminal surface 202a of the multi-core optical fiber 202 held by the holding member 301 is applied to the abrasive 302,
A polishing apparatus for polishing the terminal surface 202a to a mirror finish by rotating the polishing material 302 about a rotation axis 303 is also conceivable. However, when such a polishing device is used, the polishing material 302 of the terminal surface 202
The contact portion a is limited, and it is difficult to effectively use the entire surface of the abrasive 302 because only that portion is polished, and the terminal surface 202a is easily inclined. there were.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a polishing apparatus suitable for polishing the terminal surface of a multi-core core.

[0010]

Means for Solving the Problems An abrasive rotation driving means for rotating an abrasive, and a material to be polished held in a state in which the surface to be polished is brought into contact with the abrasive rotated by the abrasive rotation driving means. In the polishing apparatus, the polished surface is moved in the radial direction of the polished material by rotating the polished material holding unit in a rotating manner.

Accordingly, the surface to be polished is polished on substantially the entire surface of the abrasive, so that the abrasive can be prevented from being partially reduced and the entire abrasive can be effectively used.

[0012]

FIG. 1 is a sectional view of a main part of a polishing apparatus according to the present invention, and FIG. 2 is a plan view. The polishing apparatus 1 includes an abrasive rotation driving unit 3 that rotationally drives the abrasive 2, and the abrasive 2 that is rotationally driven by the abrasive rotation driving unit 3.
A multi-core optical fiber connector 201 as a material to be polished in a state where a terminal surface 202a as a surface to be polished
To be polished material holding means 4.

The abrasive 2 is formed in a circular sheet shape, and is mounted on a rotary table 31 of an abrasive rotation driving means 3 described below.

The abrasive rotating drive means 3 comprises the rotary table 31, a rotary shaft 32 supporting the center of the rotary table 31, and a motor 34 for rotating the rotary shaft 32 via a belt 33. ing.

By driving the motor 34, the circular sheet-like abrasive 2 is rotated via the belt 33, the rotating shaft 32 and the rotating table 31.

The polished material holding means 4 is provided with the polished material 2.
Is placed on the abrasive 2 so that it rotates by its rotational force when it is rotated.

The polished material holding means 4 includes the terminal surface 2.
02a pressing means against the abrasive 2
And a polishing amount regulating means 6 for adjusting the polishing amount of the terminal surface 202a.

As shown in FIG. 3, the polishing material holding means 4 is attached to a first disk 41 and a shaft 42 erected at the center of the first disk 41 so as to be able to move up and down. The second disk 43 is provided.

The first disk 41 is formed to have a diameter of about １ ／ of the diameter of the circular abrasive article 2, and is used to insert the shaft of the optical fiber connector 201 on the outer peripheral side. Are provided on the same circumference, and the light inserted into the holes 44 when the second disk 43 is lowered on the inner peripheral side. Stopper projections 45 that support the second disk 43 at a predetermined distance from the upper end of the fiber connector 201.
45 are provided.

The shaft 42 has a disc-shaped stopper 46 at the upper end for defining the highest position of the second disc 43, and the second disc 43 at the lower end. It has a pin 47 that locks in the lowered position. A hook 49 is attached to the outer peripheral surface of the disc-shaped stopper 46 by a shaft 48.
Are rotatably mounted.

The second disk 43 has a disk-shaped stopper contact portion 50 at the center of the upper surface, and has a hook engaging portion 51 on its outer peripheral surface. Then, by raising the second disk 43 and locking the hook 49 to the hook engaging portion 51, the second disk 43 is locked at the raised position.

The second disk 43 is connected to the first disk 4
The polishing member pressing means 5 is provided on concentric circles corresponding to the holes 44.

As shown in FIGS. 4 and 5, the polishing member pressing means 5 is vertically movably attached to the holes 51... 51 of the second disk 43, and presses the polishing member at the lower end. Part 5
The polishing target pressing rod 52 having a projection 2a protruding from the lower surface of the second disk 43, a spring seat 53 provided near the lower end of the rod 52, the spring seat 53 and the second circle. And a coil spring 54 interposed in a compressed state with the lower surface of the plate 43.

The second disk 43 is connected to the first disk 41
After being lowered to the positions of the stopper projections 45... 45 provided on the shaft 42, the cutouts 56 provided on the cylindrical portion 55 protruding from the lower surface of the second disk 43 shown in FIG. By introducing the stopper 47 provided, the second
Is locked in the lowered position.

When the second disk 43 is locked at the lowered position, as shown in FIG.
The optical fiber connector 2 is connected to the polishing member pressing portion 52a at the lower end of the
01 is pressed, and the terminal surface 202 a is lightly pressed against the abrasive 2.

The polishing amount regulating means 6 includes an annular concave portion 61 provided on the lower surface of the first disk 41,
And a ring-shaped plate body 62 attached to the base plate.

As shown in FIG. 7, the lower surface of the annular plate 62 attached to the recess 61 is
Protrudes from the lower surface 41a. And the terminal surface 2
When the terminal surface 202a is polished from the distal end surface 201a of the optical fiber connector 201 to a predetermined height H, as shown in FIG. 8, the lower surface of the annular plate body 62 is polished. The terminal surface 2 contacts the abrasive 2
02a is prevented from being further polished. In addition, as shown in FIGS.
1, a rotating arm 72 is slidable in the direction of arrow A,
And it is attached so as to be rotatable in the direction of arrow B. First and second rollers 73 and 74 are attached to the rotating arm 72. The first and second rollers 73 and 74
Are in contact with the outer peripheral surface of the first disk 41. Further, a watering nozzle 75 is provided above the polishing material 2.
Is disposed, and the washing water is sprayed from the tip of the nozzle 75 to the center of the abrasive 2. A controller 76 is provided on one side of the apparatus frame 71, and the controller 76 controls the entire apparatus.

Next, the operation of the polishing apparatus 1 will be described. As shown in FIGS. 3 and 4, the shaft of the optical fiber connector 201 is inserted into the holes 44... 44 of the first disk 41 in a state where the second disk 43 is locked at the raised position. I do. Next, when the second disk 43 is lowered to the lowest position and locked, the terminal surface 202 a is lightly pressed against the abrasive 2 by the abrasive pressing means 6. Next, as shown in FIG. 2, the rotating arm 72 is rotated to bring the first and second rollers 73 and 74 into contact with the outer peripheral surface of the first disk 41, and the watering nozzle 75 is rotated. Spray the washing water from. When the abrasive 2 is rotated in a counterclockwise direction (the direction of arrow C) by operating the abrasive rotation driving means 3, the abrasive 2
As a result, the terminal surface 202a is polished.

The rotation of the abrasive 2 is controlled by the terminal surface 202.
a to the first disk 41 via the optical fiber connectors 201... 201, and the first disk 41 is pressed counterclockwise while being pressed against the first and second rollers 73 and 74 ( It rotates (rotates) in the direction of arrow D).

Therefore, the terminal surface 202 a of the optical fiber 202 attached to the first disk 41 is polished by the abrasive 2 while moving in the radial direction of the abrasive 2. As shown in FIG. 9, a configuration may be adopted in which the polished material holding means 4 is rotated about a shaft 82 provided on the apparatus frame 71 via an arm 81.
The material to be polished is not limited to a multi-core optical fiber.

[0031]

The polishing apparatus of the present invention has the following effects. (1) The polishing apparatus of claim 1 performs polishing while moving the polished surface in the radial direction of the abrasive by rotating the polished material holding means, so that the entire surface of the abrasive bar is substantially uniform. Therefore, it is possible to prevent the abrasive material from being partially reduced, and to effectively use the entire abrasive material. (2) In the polishing apparatus according to the second aspect, the polished material holding means is rotated by the rotation of the polished material, so that a driving mechanism for rotating the polished material holding means is not required, thereby simplifying the structure. it can. (3) In the polishing apparatus according to the third aspect, the material to be polished is lightly pressed by the material to be polished by the material to be polished, whereby the material to be polished can be more reliably polished. (4) In the polishing apparatus of the fourth aspect, the polishing amount of the surface to be polished can be kept constant by the polishing amount regulating means.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part.

FIG. 2 is a plan view of a main part.

FIG. 3 is an exploded perspective view of the polished material holding means.

FIG. 4 is an exploded perspective view of the polished material holding means.

FIG. 5 is a cross-sectional view of a polishing target pressing means.

FIG. 6 is a cross-sectional view of the use state of the polishing target pressing means.

FIG. 7 is a sectional view showing the operation of a polishing amount regulating unit.

FIG. 8 is a sectional view showing the operation of the polishing amount regulating means.

FIG. 9 is a plan view of a modification of the polished material holding means.

FIG. 10 is an explanatory diagram of a conventional example.

FIG. 11 is an explanatory diagram showing a problem of a conventional example.

FIG. 12 is an explanatory diagram showing a problem of the conventional example.

FIG. 13 is an explanatory diagram showing a problem of a conventional example.

FIG. 14 is an explanatory diagram of another conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Polishing apparatus, 2 ... Abrasive, 3 ... Abrasive rotation drive means,
4 ... Polishing material holding means, 5 ... Polishing material pressing means, 6 ... Polishing amount regulating means, 202 ... Polishing material.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroshi Banhiro 7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation F-term (reference) 3C049 AA07 AA12 AB01 AB04 AB06 CA07 3C058 AA07 AA09 AA12 AB01 AB04 AB06 AB08 CA01 CB01

Claims (4)

[Claims] 1. A polishing material rotation driving means for driving a polishing material to rotate, and a material to be polished which holds the material to be polished in a state where the surface to be polished is brought into contact with the polishing material which is rotationally driven by the polishing material rotation driving means. A polishing apparatus provided with a holding means, wherein the polished material holding means is rotated on the polishing material, whereby the polished surface is moved in a radial direction of the polishing material. Polishing equipment. 2. The polishing apparatus according to claim 1, wherein the polished material holding means rotates following the rotation of the abrasive. 3. The polishing apparatus according to claim 1, wherein the polished material holding means has polished material pressing means for pressing a polished surface of the polished material against the polished material. 4. The polishing apparatus according to claim 1, wherein the workpiece holding means has a polishing amount regulating means.