JPH06138343A - Polishing jig for multi-fiber optical connector - Google Patents

Abstract

PURPOSE:To provide the polishing jig for exactly polishing the end face of a connector. CONSTITUTION:The groove surfaces formed in a ring are determined as reference planes 2A, 2B and the optical connector 0 is pressurized and fixed thereto. A fixed size plate 9 is interposed between such polishing jig body 1 and the reference plane 2B of a polishing plate 9B. The fixing member in the groove part of the ring 2 is pressurized by a step part in the state of fitting and floating in the hole of the small-diameter part of a stepped rod screw 8. The end face of the connector can be polished to an arbitrary angle by selection of the inscribing angle of the ring groove. A fixing member 5 in a floating state is pressed toward an optical connector 0 at a step part of the rod serew. The optical connector 0 is pressurized and tentatively fixed by the projecting part of the fixing member 5 and thereafter, the optical connector 0 is pressed to the groove of the ring 2 by means of the screw 8. Another fixing member 3 is moved atop the connector 0 and the fixing member 3 is pressed by the back surface of another screw 7. The collar part of the optical connector 0 is pressed to the upper surface part of the ring at the projecting part of the fixing member 3 by the screw 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end surface polishing jig for an optical communication connector such as an optical fiber connector and an improvement in the polishing method thereof.

[0002]

2. Description of the Related Art A conventional technique for polishing the end face of an optical connector is, for example, Japanese Patent Application No. 3-19748 filed previously.
There is a proposal of No. 0 "polishing method for multi-core optical connector". This method is characterized in that a sizing plate is interposed between the reference surface of the polishing jig of the optical connector and the reference surface of the polishing platen. The parallel relationship between the tool and the polishing plate can always be maintained, and the rigidity of the support system for maintaining the parallelism between the polishing jig and the polishing plate can be improved,
It is no longer necessary to measure accuracy.

[0003]

However, when fixing the optical connector to the polishing jig, it is difficult to always fix the optical connector to the polishing jig in the same posture with respect to the reference surface to be fixed. there were. The present inventor, when the sizing plate is interposed between the polishing jig and the polishing plate, by pressing the connector with a uniform pressing force and direction, the optical connector and the polishing platen always have the same positional relationship, That is, the present invention has been completed by finding that the optical connector can be fixed in a correct position and the optical connector can be polished at a constant polishing angle.

[0004]

That is, the present invention provides a polishing jig of a polishing apparatus for polishing an optical connector joining surface after attaching an optical fiber to an optical connector, by providing grooves at several positions on the outer circumference of a ring, The bottom surface of this groove and the top surface of the ring are used as the reference surfaces of the respective optical connectors, and the optical connector is pressed and fixed to these two reference surfaces. A polishing jig for a multi-fiber optical connector having a sizing plate interposed between the surfaces. Further, the optical connector fixing member for the ring upper surface portion has a protruding portion for pressing down two places on the upper surface of the optical connector and another protruding portion, and one portion within a line connecting the three protruding portions is a ring upper surface reference surface. It is also characterized in that it has a structure in which a pressure is applied toward the ring in the vertical direction. Also,

An optical connector fixing member for the ring groove is fitted in a small diameter portion of a stepped rod screw whose tip is bifurcated by a hole having a clearance and is connected in a floating state. It is also characterized in that it has a structure in which pressure is applied toward the optical connector at the step portion. In addition, the pressure according to claim 2 or 3 is applied to the two reference surfaces by pressing force of pressure screws arranged on the upper surface and the outer peripheral portion of the disk-shaped polishing jig body. Also has features. Also,

[0006] Another feature is that by using a ring in which the engraving angle of the ring groove is arbitrarily set with respect to the polishing plate, polishing can be performed at any angle. Further, a step of fitting a small-diameter portion of the stepped rod screw into a hole with a clearance and connecting the optical connector fixing member in a floating state, and applying pressure to the optical connector at the step portion of the rod screw Then, the optical connector is temporarily fixed by pressurizing the optical connector toward the ring in a direction perpendicular to the ring upper surface reference plane by the two protrusions of the optical connector fixing member, and then by a constant force by torque management of the screw. A step of pressing the optical connector into the ring groove; and a step of moving another optical connector fixing member to the upper surface of the connector and pressing the fixing member with the lower surface of another screw, and the pressing force is fixed by the torque of the screw. The step of pressing the optical connector crochet part to the ring upper surface part toward the reference plane by the two tip projections of the fixing member by the force of It is also a method for securing a jig.

Further, the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic view showing a cross section of a connector polishing jig applied to the polishing method of the present invention. Reference numeral 0 is an optical connector, 1 is a polishing jig body, 2 is two reference surfaces 2A for polishing the optical connector,
A ring 3 forming 2B is a positioning member of the optical connector 0 with respect to the reference surface 2A of the ring 2, 3A and 3B in FIG.
3C is three protrusions of the positioning member 3, and 4 in FIG. 2 is a hole of the positioning member 5, and the holes 4 are fitted with the small diameter portion 8C of the screw 8 with a clearance to form a floating structure. Reference numeral 5 is a positioning member of the optical connector with respect to the reference surface 2B of the ring 2, 5A and 5B are two protrusions of the positioning member 5, 7 is a screw (knob) for pressing the positioning member 3 toward the optical connector, and 7A is the screw. Lower surface portion, 8 is a stepped rod screw for pressing the positioning member 5 toward the optical connector, 8A is a base portion of the stepped portion at the tip of the screw 8, 8B is a tip portion of the stepped portion at the tip of the screw 8, and 9 is a sizing plate. , 9A is a polishing base, and 9B is a polishing board.

In this case, the reference surfaces 2A and 2B are vertical, and the angle formed by the polishing plate 9B and 2A is the polishing angle of the optical connector. Next, a method for polishing the end surface of the optical connector will be described with reference to the drawings. With the positioning member 3 retracted in the outer peripheral direction of the ring 2 as shown by the chain double-dashed line, the optical connector 0 is set so as to contact the reference surfaces 2A and 2B, and the screw 8 is lightly turned. The positioning member 5 is pushed by the stepped portion 8A at the tip of the screw 8, whereby the positioning member 5 holds down the optical connector 0.

FIG. 2 is a top view of the optical connector,
It is a top view of the fixing structure of the side direction of an optical connector. Figure 2
In, the hole 4 of the positioning member 5 and the small diameter portion 8C of the screw 8
Is fitted with a clearance, and the posture of the positioning member 5 changes according to the posture of the optical connector 0, that is, it has a floating structure.

Further, as shown in FIG. 2, the positioning member 5
Since the optical connector is pressed by the two protrusions 5A and 5B at the tip, the left and right of the optical connector can be pressed with a uniform force.
Here, FIG. 3 is a top view of the vertical fixing structure of the optical connector as seen from the upper surface of the optical connector.

Next, as shown in FIG. 3, the positioning member 3
To the upper surface of connector 0 and press it down with a knob (screw)
Turn 7 lightly and screw in. This allows the knob (screw)
The positioning member 3 is pushed by the lower surface 7A of the positioning member 3
The optical connector 0 is pressed toward the reference plane 2A shown in FIG. 1 by the two tip projections 3A and 3B.

Here, as shown in FIG. 3, the pressing knob (screw) 7 has three protrusions 3 of the positioning member 3.
2 of sides 3A, 3B of an isosceles triangle formed by A, 3B, 3C
Since they are on the bisector, the protrusions 3A and 3B can push the optical connector 0 with equal force. After that, the screw 8 and the screw 7 are turned in this order with a constant torque, and the optical connector 0 is positioned and fixed to the polishing jig 1.

In short, in the present invention, the method of positioning and fixing the optical connector on the polishing jig basically comprises the following steps. That is, a The small diameter portion 8C of the stepped rod screw 8 is fitted into the hole 4 with a clearance, and the optical connector fixing member, that is, the positioning member 5 is connected in a floating state, and the stepped base portion 8A of the rod screw 8 is attached. Then, the optical connector 0 is pressed toward the ring 2 in the direction perpendicular to the ring upper surface reference plane by the two protrusions 5A and 5B of the positioning member 5, and then temporarily fixed. After that, a step of pressing the optical connector into the ring groove 2B with a constant force by controlling the torque of the screw, and further, another optical connector fixing member, that is, the positioning member 3 is moved to the upper surface of the optical connector, and another screw 7 The positioning member 3 is pressed by the lower surface 7A, and the pressing force is fixed by the torque of the screw by the two tip projections 3A and 3B of the positioning member 3, Sequentially carrying out the pressing the optical connector crocodile portion to the ring upper surface toward the reference plane, is characterized in a method of fixing the optical connector to the polishing jig.

Further, as shown in FIG. 1, the optical connector 0 positioned and fixed to the polishing jig 1 is used as a polishing base 9A.
As it is polished by the polishing plate 9B attached to the center of the plate, the sizing plate 9 attached to the outer periphery of the polishing jig 1 contacts the polishing base 9A, and finally the optical connector 0 and the polishing plate 9B.
And always maintain the same positional relationship.

[0015]

To polish the optical connector, it is necessary to always fix the optical connector to the polishing jig in the same posture in the order of μm. As described above, the optical connector can be precisely positioned by using the method and polishing jig of the present invention. Further, since the polishing jig itself has the same positional relationship as the polishing plate, the angle error of the polished optical connector can be precisely polished within the range of 0.1 °, for example.

[0016]

The present invention will be described in detail with reference to the following examples, which do not limit the scope of the present invention. FIG. 4 is a schematic view showing a combined structure of a polishing jig body and a polishing machine. Figure 5
FIG. 3 is a schematic view showing an upper surface of a polishing jig according to the present invention. FIG. 6 shows a ring 2 and an optical connector 0 that define a constant polishing angle.
FIG. 3 is a schematic diagram according to the present invention showing a cross-sectional state of FIG. Figure 7
1 is a schematic view according to the invention showing the upper surface of the ring 2.

In this embodiment, the optical connector polishing apparatus shown in FIG. 4 will be used to specifically describe the embodiment. The pressure applied during polishing is the pressing shaft 10 of the polishing jig body.
Is given by the force of the spring 12. Adjustment of the pressing force is performed by the adjusting screw 13.

Reference numeral 14 denotes a pressure adjusting mechanism, the main body of which is fixed to the arm 15 and is pressed against the polishing platen 23 by its supporting system. On the other hand, on the polishing side,
The motor 16 drives the drive pulley 17, the belt 18, and the driven pulley 19 to rotate the main shaft of the spindle 20. The main shaft of the spindle 20 is an output shaft and is eccentric with respect to the center of the main shaft.

This eccentricity has a relationship between the pinions 21 and 22 and the internal gear, and therefore the polishing disc 23 swings and rotates. As the polishing plate 23, a rough polishing plate (6 μm diamond electrodeposition grindstone), a medium polishing lapping film plate (3 μm), a finishing lapping film plate (1 μm) and a buff polishing plate (0.5 μm cerium oxide) were used.

A sizing plate 26 is provided between the polishing jig body 1 and the polishing plate 23 so that the optical connector can always polish the polishing plate 23 through the sizing plate 26 at a constant angle. I chose

As a result of the experiment, when fixing the optical connector, the screws were lightly turned in the order of 8 and 7 to temporarily fix the optical connector, and then the screw 8 was 1.4 kg · cm, and then the screw 7
The optical connector can be fixed to the polishing jig 1 in the same posture at all times by rotating the blade with a torque of 2.2 kg · cm. It fell within 1 °.

Further, as shown in FIG. 6, the polishing angle can be arbitrarily set only by changing the angle θ of the ring 2.

[0023]

As described above, since the method and the polishing jig of the present invention are used, the optical connector can always be polished at the same angle, and the dimensional angle can be used in the field of polishing the end face of the optical connector. It is effective when used to maintain the accuracy of.

[Brief description of drawings]

FIG. 1 is a schematic view showing a cross section of a connector polishing jig applied to a polishing method of the present invention.

FIG. 2 is a top view of a lateral fixing structure of the optical connector according to the present invention, viewed from the top of the optical connector.

FIG. 3 is a top view of the vertical fixing structure of the optical connector according to the present invention as seen from the top of the optical connector.

FIG. 4 is a schematic view showing a combined structure of a polishing jig body and a polishing machine, which is one embodiment of the present invention.

FIG. 5 is a schematic view showing an upper surface of a polishing jig according to the present invention.

FIG. 6 is a schematic diagram according to the present invention showing a cross-sectional state of the ring 2 and the optical connector 0 that define a constant polishing angle.

FIG. 7 is a schematic diagram according to the invention showing the top surface of the ring.

[Explanation of symbols]

0 optical connector 1 polishing jig 2 ring forming reference surfaces 2A and 2B 3 positioning member of optical connector with respect to reference surface 2A of ring 3A one protrusion of positioning member 3B one protrusion of positioning member 3 3C positioning member One protrusion 3 of 4 is a hole of the positioning member 5 and is fitted with the small diameter portion 8C of the screw 8 with a clearance to form a floating structure. 5 is a positioning member of the optical connector with respect to the reference surface 2B of the ring 5A Positioning member 5 One protrusion 5B One protrusion 7 of the positioning member 5 A screw (knob) for pressing the positioning member 3 toward the optical connector 7A A lower surface of the screw 7 A stepped rod screw 8A for pressing (pressurizing) the positioning member 5 A Screw 8A Stepped base 8B Stepped tip of screw 8 9 Sizing plate 9A Polishing base 9B Polishing board 10 Pressing shaft Second spring 13 adjusting screw 14 pressure regulating mechanism 15 arm 16 motor 17 driving pulley 18 belt 19 driven pulley 20 spindle 21 pinion 22 pinion 23 grinder 26 Teisunban 27 link groove

Claims (6)

[Claims] 1. A polishing jig of a polishing apparatus for polishing an optical connector joining surface after an optical fiber is attached to an optical connector, wherein grooves are provided at several places on the outer periphery of the ring, and the bottom surface of the groove and the upper surface of the ring have two grooves. The surface is used as the reference surface of each optical connector, the optical connectors are pressed and fixed to these two reference surfaces, and a sizing plate is interposed between the polishing jig body having this ring and the reference surface of the polishing board. This is a polishing jig for multi-fiber optical connectors. 2. The optical connector fixing member for the ring upper surface portion according to claim 1, wherein the optical connector fixing member has a protruding portion for holding down two places on the upper surface of the optical connector and another protruding portion at one place, and within a line connecting the three protruding portions. A polishing jig for a multi-fiber optical connector, which has a structure in which one portion is pressed toward the ring in a direction perpendicular to the reference surface of the ring upper surface. 3. The optical connector fixing member for the ring groove portion according to claim 1, is fitted in a small diameter portion of a stepped rod screw whose tip is bifurcated by a hole having a clearance and is connected in a floating state. A polishing jig for a multi-fiber optical connector, which has a structure in which pressure is applied toward the optical connector by the stepped portion of the stepped rod screw. 4. The two reference planes according to claim 1,
The polishing of a multi-fiber optical connector, wherein the pressing according to claim 2 or 3 is performed by pressing force of a pressing screw arranged on an upper surface portion and an outer peripheral portion of a disk-shaped polishing jig body. jig. 5. The engraving angle of the ring groove according to claim 1 is changed by using a ring that is arbitrarily set for the polishing plate, and polishing at any angle is possible. Polishing jig for optical fiber connectors. 6. A stepped rod screw having a small diameter portion fitted in a hole with a clearance, the optical connector fixing member is connected in a floating state, and the stepped portion of the rod screw is applied toward the optical connector. Pressing step, and then b
The two projections of the optical connector fixing member press the optical connector toward the ring in a direction perpendicular to the reference plane of the ring upper surface to temporarily fix the optical connector, and then ring the optical connector with a constant force by torque management of the screw. Step of pressing into the groove, c
Further, a step of moving another optical connector fixing member to the upper surface of the connector and pressing the fixing member with the lower surface of another screw, and d. This pressing force is a constant force by the torque of the screw and the two tip protrusions of the fixing member. Section, the step of pressing the optical connector crocodile part against the ring upper surface part toward the reference surface is sequentially carried out.