JP2000081537A - Optical fiber ferrule polishing jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to integrally and stably polish many pieces of optical fiber cords without increasing in size and without kinking by constituting a polishing jig from a polishing jig plate for holding and fixing ferrules, a holding cylinder for fitting and holding the polishing jig plate and a holding cylinder support for freely rotatably supporting the holding cylinder. SOLUTION: The upper part of the holding cylinder 2 is successively provided with an optical fiber cord housing container 3 provided with an optical fiber cord insertion hole 11 at its base surface via a supporting rod 8. The polishing jig plate 4 set with the ferrules is fitted and fixed into the holding cylinder 2 in such a manner that the end faces of the ferrules press a polishing abrasive stone plate 28. This polishing abrasive stone plate 28 rotate on one direction and the holding cylinder 2 is rotated in the same direction as the rotating direction of the polishing abrasive stone plate 28 on the abrasive stone plate 28 at a prescribed position supported with the holding cylinder supporting body 5 by the torque developed by the friction force between the ferrule end faces and the polishing abrasive stone plate 28, by which the end face polishing of the ferrules is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber ferrule polishing jig, and more particularly to an optical fiber ferrule polishing jig suitable for simultaneously polishing end faces of a large number of ferrules to which optical fiber cords are connected. It is about.

[0002]

2. Description of the Related Art Generally, when polishing an end face of an optical fiber ferrule, an optical fiber ferrule 20 is held and fixed on a polishing jig plate 21 as shown in FIG. An ordinary polishing jig plate 21 is formed of a hexagonal or octagonal metal plate, a support shaft hole 22 is provided at the center of the metal plate, and a V groove 23 for attaching the optical fiber ferrule 20 to each side of the metal plate.
And a holding plate 24 are provided. After the optical fiber ferrule 20 is inserted into the V groove 23, the holding plate 24 and the screw 25
Thus, it is held and fixed to the polishing jig plate 21. A maximum of six hexagonal polishing jig plates 21 and an octagonal polishing jig plate 21
Holds a maximum of eight optical fiber ferrules 20. In the figure, F indicates an optical fiber cord, and 31 indicates a weight for adjusting the polishing pressure. FIG. 4 is an explanatory top view showing a state in which a polishing jig plate is arranged in a conventional optical fiber ferrule end face polishing apparatus. The grinding wheel plate 28 has a disk shape and has a rotation shaft 29 at the center, and is configured to rotate in one direction by a drive motor (not shown). On the other hand, the polishing jig plate 2
In 1, the support shaft hole 22 of the polishing jig plate 21 is fitted into a rotation support shaft 26 provided at a position deviated from the rotation shaft 29 of the grinding wheel plate 28, and is fixed with screws. The optical fiber cords F of the ferrules 20 of the polishing jig plate 21 are bundled together on an optical fiber cord holding stand 30 provided separately outside the polishing jig plate 21 and the polishing grindstone plate 28. Will be retained. The polishing jig plate 21 itself rotates around the rotation axis 29 of the polishing wheel plate 28 without rotating.
The rotation support shaft 26 of the polishing jig plate 21 is connected to a drive motor (not shown) of the polishing grindstone plate 28 so as to revolve in the direction opposite to the rotation direction of the polishing jig plate 21. Accordingly, each of the ferrules 20 held on the polishing jig plate 21 also draws an elliptical orbit in the direction opposite to the rotation of the polishing wheel plate 28 while rotating the rotating shaft 29 of the polishing wheel plate 28.
Drive around the orbit. As described above, the polishing jig plate 21 performs an orbital motion around the rotation axis 29 of the polishing whetstone plate 28 without rotating, thereby enabling the polishing jig plate 21 to rotate.
Can be polished without cutting the connected optical fiber cord F.

[0003]

In the above-mentioned conventional optical fiber ferrule polishing jig, the number of optical fiber ferrules 20 set at one time for ferrule polishing is at most about eight. For this reason, the polishing device has been reduced in size to be suitable for polishing the end face of a small number of ferrules,
The polishing jig plate 21 and the polishing whetstone plate 28 are connected to and driven by the same drive motor, and the polishing jig plate 21 itself rotates to prevent the optical fiber cord F connected to the ferrule 20 from being cut off. Without rotating shaft 2 of grinding wheel plate 28
A method of driving the planet while drawing an elliptical eccentric orbit around 9 has been adopted. However, in the case where a large number of ferrule terminals such as 24 or 48 are collectively polished at the end face to improve the efficiency of the polishing process, the above-described conventional optical fiber ferrule polishing apparatus may be scaled up as it is. The end face polishing apparatus of the fiber ferrule became a very large facility and was unsuitable for practical use. In addition, the conventional optical fiber ferrule polishing jig plate 21
In the case of (1), since the number of optical fiber cords F set at a time is as small as about eight, the optical fiber cord holding stand 30 in which the optical fiber cord F connected to the ferrule 20 is provided outside the polishing jig plate 21 is provided. The optical fiber cords F were not entangled even if they were bundled together. However, when the number of polished optical fiber ferrules 20 is as large as 24 or 48, if the optical fiber cords F connected to the ferrule 20 are bundled together, the optical fiber cords F are entangled and the ferrule 20 is entangled. The wire number correspondence between the optical fiber cord F and the optical fiber cord F is confused, so that much time is required for the wire number matching process, and furthermore, the optical fiber cord F is damaged when the optical fiber cord F is entangled. There was a problem.

Therefore, the object of the present invention is to provide 24 or 4
A large number of optical fiber ferrules such as eight can be used without increasing the size of the optical fiber ferrule end face polishing apparatus.
Another object of the present invention is to provide an optical fiber ferrule polishing jig capable of performing stable polishing all at once without entanglement of an optical fiber cord.

[0005]

In order to achieve the above object, an optical fiber ferrule polishing jig according to the present invention comprises: a polishing jig plate for holding and fixing a ferrule to which an optical fiber cord is connected; A holding cylinder for fitting and holding
A bottomed optical fiber cord storage container provided with an optical fiber cord insertion hole on the bottom surface which is connected to the upper part of the holding cylinder so as to be detachable via a support rod, and a holding cylinder support for supporting the holding cylinder in a rotatable manner. The configuration is characterized by the following.

[0006]

According to the optical fiber ferrule polishing jig of the present invention,
A polishing jig plate for fixing a large number of optical fiber ferrules such as 24 or 48 is fitted and held in a holding cylinder,
This holding cylinder is configured to be supported by a holding cylinder support, and does not use a motor for rotationally driving the holding cylinder. For this reason, the holding cylinder only rotates on the polishing grindstone plate at a fixed position by frictional force at the time of polishing between the end face of the optical fiber ferrule fixed to the polishing jig plate and the polishing grindstone plate. It does not revolve around the axis of rotation. Therefore, since the end surface of each ferrule held on the polishing jig plate is also rotated and polished on the polishing grindstone plate with the rotation of the holding cylinder, surface dripping at the time of polishing the ferrule end surface is prevented. You. In addition, since a motor and a rotary drive mechanism for forcibly rotating the polishing jig are omitted, the polishing apparatus as a whole can be simplified, and a large number of optical fiber ferrules can be polished at once without increasing the size of the apparatus. Can be performed. Further, in the optical fiber ferrule polishing jig of the present invention, an optical fiber cord storage container provided with an optical fiber cord insertion hole on the bottom surface on the holding cylinder is connected in a detachable manner, and the holding cylinder and the optical fiber code storage container are connected. And a single optical fiber cord, such as 24 or 48 optical fiber cords,
The optical fiber cord can be stored neatly in the optical fiber cord storage container without entanglement and without breaking the correspondence between the ferrule and the optical fiber cord.

Further, if the holding cylinder support is formed of a pair of rollers attached to the tip and an arm supporting the pair of rollers, the holding cylinder is rotated very smoothly by the pair of rollers of the holding cylinder support. It is possible to support while.

Further, if an optical fiber cord insertion / removal slit is provided from the optical fiber cord insertion hole on the bottom surface of the optical fiber storage container to the side wall of the container, the insertion / removal of the optical fiber cord is facilitated and the work efficiency is improved.

Further, if a plurality of slits are provided in the peripheral wall at the bottom of the holding cylinder, the polishing liquid sprayed on the polishing wheel at the time of polishing the end face of the ferrule can be uniformly distributed over the entire polishing wheel including the bottom of the holding cylinder. And the end face of the ferrule can be polished smoothly, and the polishing quality is stabilized. Also,
The contact area between the grinding wheel plate and the holding cylinder is reduced, and unnecessary friction during polishing can be reduced.

[0010]

Embodiments of the present invention will be described below with reference to FIG. Note that the present invention is not limited by this.

FIG. 1 is a perspective explanatory view showing one embodiment of an optical fiber ferrule polishing jig according to the present invention. The optical fiber ferrule polishing jig 1 includes a holding cylinder 2 for fitting and holding a polishing jig plate 4, and an optical fiber cord storage container 3 connected to the upper part of the holding cylinder 2 via a support rod 8 so as to be detachable. And a holding cylinder support 5 having a pair of rollers 6 attached to the tip for rotatably supporting the holding cylinder 2. The holding cylinder 2 is formed of a ceramic material having excellent wear resistance so as to withstand a polishing operation. A plurality of slits 9 are provided in a bottom peripheral wall of the holding cylinder 2, and an iron plate is provided on an upper surface of the holding cylinder 2 so that a support rod 8 can be attached and detached. A frame 10 is provided. The polishing jig plate 4 is detachably fitted and fixed in the holding cylinder 2 such that the end face of the ferrule 20 presses the polishing grindstone plate 28. For example, FIG. 2 shows an example of the polishing jig plate 4 for fixing 24 ferrules 20. The polishing jig plate 4 is formed of a dodecagonal metal plate, and has two V-grooves 15 and 15 on each side. After the plate 16 and the screw 17 are provided, the ferrule 20 is set in the V-groove 15 and then held and fixed by the holding plate 16 and the screw 17. A cylindrical portion 18 projects from the center of the polishing jig plate 4, and a weight 19 for adjusting the polishing pressure of the ferrule is placed on the cylindrical portion 18. The optical fiber cord storage container 3 is formed of a plastic material, an insertion hole 11 for the optical fiber cord F is provided in the center of the bottom surface of the storage container 3, and a slit for inserting and removing the optical fiber code F from the insertion hole 11 to the side wall of the storage container 3. An iron plate frame 13 is provided on the bottom surface of the storage container 3 so that the support rod 8 can be attached and detached. The holding cylindrical support 5 has a pair of rollers 6 attached to the tip thereof, and the pair of rollers 6 is supported by an arm 7. The arm 7 is fixed to the polishing jig 1 and outside the polishing wheel plate 28. Is done.

In FIG. 1, a ferrule 20 of a polishing jig plate 4 fitted into a holding cylinder 2 has an end face of a polishing grindstone plate 28.
The polishing wheel is rotated while the polishing liquid is sprayed onto the polishing wheel plate 28. The polishing grindstone plate 28 rotates in one direction, and the holding cylinder 2 moves on the polishing grindstone plate 28 at a predetermined position supported by the holding cylinder support 5 by the rotational force generated by the frictional force between the end face of the ferrule 20 and the polishing grindstone plate 28. The end face of the ferrule 20 is polished while rotating in the same direction as the rotation direction of the polishing wheel plate.

[0013]

According to the optical fiber ferrule polishing jig of the present invention, a large number of optical fiber ferrule terminals can be polished at once without increasing the size of the polishing apparatus, and the efficiency of the polishing process can be improved. It is possible to save space and cost of the polishing apparatus. In addition, since the polishing jig plate is inserted and held in the holding cylinder, and the holding cylinder is rotated while being supported by the holding cylinder support, the end face of the optical fiber ferrule is also polished while rotating, so that a droop occurs during polishing. And a high quality ferrule polished surface can be obtained. In addition, an optical fiber cord storage container that rotates integrally with the holding cylinder is provided on the holding cylinder, and the optical fiber cord connected to the ferrule is stored and held in the optical fiber code storage container. The optical fiber cord can be stored and held neatly according to the number, and the processing of the optical fiber cord after the polishing operation is also facilitated.

[Brief description of the drawings]

FIG. 1 is a perspective explanatory view showing one embodiment of an optical fiber ferrule polishing jig of the present invention.

FIG. 2 is a top view showing one embodiment of a polishing jig plate used for the optical fiber ferrule polishing jig of the present invention.

FIG. 3 is a top view of a conventional polishing jig plate.

FIG. 4 is a top view showing an example of arrangement of a conventional polishing jig plate and a polishing grindstone plate.

[Explanation of symbols]

 Reference Signs List 1 optical fiber ferrule polishing jig 2 holding cylinder 3 optical fiber cord storage container 4 polishing jig plate 5 holding cylindrical support 6 roller 7 roller support arm 8 support rod 9 slit 10, 13 iron plate frame 11 optical fiber cord insertion hole 12 light Fiber cord insertion / removal slit 15 V-groove 16 Holding plate 17 Screw 18 Cylindrical part 19 Weight 20 Optical fiber ferrule F Optical fiber cord

Claims (4)

[Claims] An optical fiber ferrule polishing jig for holding a ferrule when polishing an end face of a ferrule to which an optical fiber cord is connected on a grinding wheel plate, wherein the jig holds the ferrule to which the optical fiber cord is connected. A polishing jig plate to be fixed, a holding cylinder for fitting and holding the polishing jig plate, and an optical fiber cord insertion hole provided on the bottom of the holding cylinder, which is removably connected via a support rod to the upper part of the holding cylinder. An optical fiber ferrule polishing jig comprising: a bottom optical fiber storage container; and a holding cylinder support that rotatably supports the holding cylinder. 2. A structure in which the holding cylinder support is formed of two rollers attached to the tips and an arm for supporting the two rollers, and the two rollers support the holding cylinder in a rotatable manner. The optical fiber ferrule polishing jig according to claim 1, wherein: 3. The optical fiber ferrule polisher according to claim 1, wherein an optical fiber cord insertion / removal slit is provided from the optical fiber cord insertion hole on the bottom surface of the optical fiber container to the side wall of the container. jig. 4. The optical fiber ferrule polishing jig according to claim 1, wherein a plurality of slits are provided in a bottom peripheral wall of said holding cylinder.