JP2001277088A - Jig board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig board reducing polishing cost and simplifying a polishing process. SOLUTION: This jig board 10 is attached to an end face polishing device polishing an end face of a ferrule and it is arranged in a position facing a polishing disc. It is provided with a jig board body 20 having an attaching part 15 to the end face polishing device in a substantially center part, and holding members 30A, 30B, and 30C detachably holding the ferrule and an optical connector plug. The holding members 30A to 30C are formed in shapes corresponding to various connector plugs and they are replaceable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig board provided in an end face polishing device for polishing a ferrule holding an optical communication fiber or the like and fixing a ferrule and an optical connector plug.

[0002]

2. Description of the Related Art An optical communication fiber is used after a fiber is adhered and fixed in a center hole of a ferrule which is a main member of a connector, and the end face of the ferrule and the end face of the fiber are simultaneously polished smoothly and mirror-finished. . If the polished surface of the polished ferrule and fiber is not perpendicular to the center axis of the ferrule, or if the polished surface is damaged, the opposing position accuracy of the optical connector in which the ferrules are connected to each other is reduced. It deteriorates and loss increases. Therefore, the polished surface of the ferrule including the optical fiber needs to be polished with high precision.

A conventional optical fiber end surface polishing apparatus is disclosed in, for example, Japanese Patent Application Laid-Open No. 3-26456. The optical fiber end surface polishing apparatus disclosed in this publication has an eccentric disk that rotates on a concentric circle of a rotating disk, and this eccentric disk has a planetary gear that transmits the rotation of a revolving motor, and these are coupled to the polishing disk. While rotating and revolving the polishing machine, the polishing member fixed to this polishing machine,
A jig board holding a large number of ferrules is provided to face each other, and the end face of the ferrule is pressed against a polishing member for polishing.

[0004]

As described above, in the conventional optical fiber end face polishing apparatus, a load is applied to the jig board by a spring or a weight with respect to the polishing member fixed to the polishing board which rotates and revolves. Is applied to press the end faces of a large number of ferrules held on a jig board to perform polishing.

However, the conventional jig board cannot simultaneously hold ferrules and optical connector plugs having different shapes, so that only ferrules or optical connector plugs having the same shape can be polished at the same time. Therefore, there is a problem that a large number of jig boards corresponding to optical connector plugs having different shapes are required, and the cost is increased.

Also, every time an optical connector plug having a different shape is polished, the jig board must be replaced, which causes a problem that the polishing process becomes complicated.

Further, when re-polishing the optical connector plug or the like, if the number of the optical connector plugs held on the jig board is insufficient, the polishing accuracy is degraded. Therefore, a new optical connector plug is mounted as a dummy. Polishing has to be performed, which is costly.

[0008] In view of such circumstances, it is an object of the present invention to provide a jig board that reduces the polishing cost and simplifies the polishing process.

[0009]

According to a first aspect of the present invention, there is provided a jig board mounted on an end face polishing apparatus for polishing an end face of a ferrule and arranged at a position facing the polishing board. A jig board body having an attachment portion to the end face polishing device at a substantially central portion, and a holding member for detachably holding a ferrule and an optical connector plug, wherein the holding member corresponds to various optical connector plugs. A jig board characterized in that the jig board can be replaced with another one.

According to a second aspect of the present invention, in the first aspect, the holding member is detachably engaged with a notch portion opened in a peripheral portion of the jig board body by moving in a plane direction. The jig board is characterized in that:

A third aspect of the present invention is the jig board according to the first or second aspect, wherein the optical connector plug is an SC type, FC type or ST type optical connector plug.

According to the jig board of the present invention, a ferrule or a holding member corresponding to various optical connector plug shapes having a ferrule is detachably held on the jig board, so that the ferrule or the shape can be obtained with one jig board. Different optical connector plugs can be polished simultaneously.

[0013]

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

(Embodiment) FIG. 1 is a perspective view and a top view of a jig board according to one embodiment of the present invention, and FIG. 2 is a cross-sectional view of the jig board according to one embodiment of the present invention.

As shown in FIG. 1 and FIG.
Is a jig board body 20 and a holding member 30 fixed thereto.
A to 30C.

The jig board main body 20 is formed of a hexagonal plate-like member, and has a notch 21 which is open on the periphery at each side.

A projecting portion 22 projecting in a plane direction on both sides of the opening of the notch portion 21 is provided on a peripheral portion of the jig board main body 20.
Are provided, and a projection 23 protruding toward the surface is provided on the bottom surface of the notch 21.

On each side of the peripheral portion of the jig board main body 20, a rectangular locking portion 24 adjacent to one of the protrusions 22 is extended. A screw member 25 having a tip protruding toward one adjacent protruding portion 22 is screwed into the locking portion 24.

Further, a boss 15 which is a mounting portion to an end face polishing device, which will be described in detail later, is fixed to a substantially central portion of the upper surface of the jig board main body 20. The boss portion 15 has a tapered hole 16 gradually increasing toward the opening on the upper surface side.
, And an engagement groove 17 is provided in the peripheral portion.

The notch 21 of the jig board body 20 has holding members 30A to 30A for holding various optical connector plugs.
30C is detachably held. This holding member 30
In the present embodiment, each of A to 30C is an SC type, F
It has a structure for holding C-type and ST-type optical connector plugs.

FIG. 3 is a perspective view and a sectional view of the holding member 30A, FIG. 4 is a perspective view and a sectional view of the holding member 30B, and FIG.
Are a perspective view and a sectional view of a holding member 30C.

As shown in FIG. 3, the holding member 30A
It has a structure for holding a C-type optical connector plug. Specifically, the holding member 30A includes a plate-like base portion 31A that engages with the notch portion 21 of the jig board main body 20, a holding portion 40 provided on the base portion 31A to hold the SC optical connector plug, and Having.

The base portion 31A has, at one end thereof, an extension portion 32 extending on both sides in the width direction. This extension 3
2, a jig board body 20 penetrating in the longitudinal direction.
Is formed with an engaging hole 33 that engages with the protruding portion 22 provided on the second member. The jig board main body 2
V engaging with the screw member 25 of the locking portion 24 provided at
A groove 34 is provided. Further, an engagement hole 35 for engaging with the projection 23 of the jig board main body 20 is provided at the other end of the base portion 31A in the longitudinal direction.

A concave portion 3 is formed on the upper surface of the base portion 31A.
6A is formed, and the bottom surface of the concave portion 36A has an SC
A cylindrical engagement protrusion 37A that fits into the tip of the optical connector plug is provided. This engagement protrusion 37A has
A ferrule insertion hole 38A is formed through which the ferrule held in the SC optical connector plug can be inserted in the axial direction.

On the other hand, the holding portion 40 provided on the base portion 31A has a support portion 41, and first and second cylindrical portions 42, 43 provided on the outer periphery of the support portion 41.

The first cylindrical portion 42 is provided on the outer periphery of the support portion 41 on the base portion 31A side so as to be movable in the axial direction.
At the upper end of the first cylindrical portion 42, an arm portion 44 is provided which is fitted to the rear end of the SC optical connector plug. The first cylindrical portion 42 includes a stepped portion 4 provided on the outer periphery.
5, and is urged upward in the figure by a compression spring 46 sandwiched between the upper surface of the base portion 31A and the upper surface of the base portion 31A.

The second cylindrical portion 43 is provided on the outer periphery on the upper end side of the column portion 41, and is restricted from moving in the axial direction by screwing with the column portion 41. When the upper end of the first cylindrical portion 42 abuts on the lower end of the second cylindrical portion 43, the upward movement of the arm portion 44 in the drawing is restricted. That is, by rotating the second cylindrical portion 43, the arm portion 4 is rotated.
4 can be changed from the base portion 31A.

The engagement protrusion 37A of the holding member 30A has S
The SC-type optical connector plug is held by the holding member 30A by fitting the distal end of the C-type optical connector plug and holding the SC-type optical connector plug between the bottom surface of the concave portion 36A and the arm portion 44. At this time, the SC of the holding member 30A is
From the opposite side where the optical connector plug is held
The tip of the ferrule held by the C-type optical connector plug is protruded by a predetermined amount.

The holding member 30A holding the SC-type optical connector plug as described above is engaged by the engagement holes 33, 35 moving in the plane direction to the projections 22, 23 provided on the jig board body 20. Then, the vertical movement is held in a restricted state. Further, by fastening the screw member 25 provided on the locking portion 24 of the jig board main body 20, the tip of the screw member 25 projects into the V groove 34 of the holding member 30A, and the engagement hole 33,
The engagement between the projection 34 and the projections 22 and 23 cannot be removed.

As shown in FIG. 4, the holding member 30B
Has a structure for holding an FC-type optical connector plug. More specifically, the holding member 30B has a concave portion 36B provided on the upper surface of the base portion 31B, and an engaging protrusion 37B provided on the bottom surface of the concave portion 36B and screwed to the tip of the FC-type optical connector plug. A ferrule insertion hole 38B through which the ferrule of the FC-type optical connector plug can be inserted is formed in the mating protrusion 37B in the thickness direction. By screwing the tip end of the FC-type optical connector plug into the engagement protrusion 37B, the FC-type optical connector plug is attached to the holding member 30.
The ferrule is held so that the tip of the ferrule projects from the bottom surface of B by a fixed amount.

The base portion 31B is provided with an extended portion 32, engagement holes 33 and 35, and a V-shaped groove 34, similarly to the base portion 31A of the holding member 30A described above.

The holding member 30B is held in the notch 21 of the jig board main body 20, similarly to the holding member 30A.

As shown in FIG. 5, the holding member 30C
Has a structure for holding an ST-type optical connector plug. More specifically, the holding member 30C has a concave portion 36C provided on the upper surface of the base portion 31C, and an engaging protrusion 37C provided on the bottom surface of the concave portion 36C and engaged with the tip of the ST-type optical connector plug. A ferrule insertion hole 38C through which the ferrule of the ST type optical connector plug can be inserted is formed in the mating projection 37C in the thickness direction. The outer periphery of the engagement projection 37C is engaged with a notch (not shown) provided at the tip of the ST-type optical connector plug, and
A locking projection 39 is provided for preventing the mold optical connector plug from coming off. By engaging the tip of the ST-type optical connector plug with the engagement protrusion 37C, the ST-type optical connector plug is held such that the tip of the ferrule projects a predetermined amount from the bottom surface of the holding member 30C.

The base portion 31C is provided with an extended portion 32, engagement holes 33 and 35, and a V-groove 34, similarly to the base portion 31A of the holding member 30A described above.

The holding member 30C is held in the notch 21 of the jig board main body 20, similarly to the holding members 30A and 30B.

In the present embodiment, such holding members 30A to 30C are alternately arranged in the notches 21 of the jig board main body 20.

As described above, since the holding members 30A to 30C holding various optical connector plugs can be engaged with the notch portion 21 of the jig board body 20 by moving the holding member 30A in the plane direction, it is very simple. The holding members 30A to 30C can be detachably held by appropriate engaging means, and there is no need to position the protrusion amounts and angles of the ferrules of the various optical connector plugs held by the holding members 30A to 30C. Also, since the ferrules of various optical connector plugs can be simultaneously polished with one jig board 10, there is no need to replace the jig board depending on the shape of the optical connector plug, thereby simplifying the polishing process and realizing low cost. it can.

The jig board 10 holding the optical connector plugs having different shapes is provided in an end face polishing apparatus.

Here, the end surface polishing apparatus provided with the jig board 10 will be described in detail.

FIG. 6 is a partial sectional view and an enlarged view of a main part of an end face polishing apparatus according to an embodiment of the present invention.

As shown in FIG. 6, the center of a first rotation transmission board 52 is fixed to the rotation shaft of the rotation motor 51, and the first rotation transmission board 52 is formed on a concentric circle with the rotation center as a fulcrum. , A plurality of first connecting pins 53 are fixed. And
Each of the first connection pins 53 is rotatably connected to an eccentric portion of each of the rotation transmission boards 54, and a second connection pin 55 is fixed to each of the rotation transmission boards 54 at the eccentric section. Each second
The connection pin 55 is rotatably connected to the second rotation transmission board 56.

On the other hand, a central portion of a drive gear 58 is fixed to the rotation shaft of the revolving motor 57, and a driven gear 59 meshes with the drive gear 58. The driven gear 59 is fixed to the outer periphery of the lower portion of the revolution transmission shaft 60.
A bearing cylinder portion 62 of the device main body 61 is fitted to the outer periphery of the upper portion of the device. A rotation shaft 63 for rotation is rotatably fitted to the revolving transmission shaft 60 at a position eccentric from the center of rotation by a predetermined amount, and a lower end of the rotation shaft 63 for rotation is connected to the second rotation transmission plate 5.
6 at the center.

The upper end of the rotating shaft 63 is connected to a polishing plate 65 via a connecting member 64.
A polishing member 65a is attached to the upper surface of the polishing board 65.

On the other hand, the jig board 10 is supported on the apparatus main body 61 by a support mechanism 66.

The supporting mechanism 66 has a pressing shaft 67 having a conical shape at the tip which is urged downward by a predetermined pressing force toward a supporting portion 61 a fixed to the apparatus main body 61, and is provided in parallel with the pressing shaft 67. The rotation stop pin 68 is provided.

The tip of the holding shaft 67 fits into the tapered hole 16 of the boss 15 provided on the jig board 10 and
The ferrule held on the jig board 10 is pressed against the polishing member 65a by urging 0 toward the polishing board 65. The rotation of the jig board 10 is restricted by the engagement between the engagement groove 17 provided in the boss 15 and the rotation stop pin 68.

Here, the operation of the end face polishing apparatus will be described.

As shown in FIG. 6, first, the revolving motion is achieved by driving a revolving motor 57.
The rotation transmission shaft 60 is rotated through the rotation
5 revolves by a predetermined amount of eccentricity. In this case, there is a rotation shaft 63 for rotation in the revolution transmission shaft 60, but since the plurality of rotation transmission plates 54 are arranged between the first rotation transmission plate 52, the rotation transmission plate 54 is Each of them rotates around the first connection pin 53 in the same phase as the rotation of 60. Therefore,
Even if the first rotation transmission board 52 stops or rotates, the rotation of the revolution transmission shaft 60 is not restricted.

On the other hand, with respect to the rotation motion, the first rotation transmission board 52 is rotated by driving the rotation motor 51. However, since the first connecting pin 53 is on the concentric circle of the first rotation transmission board 52, Although the rotation axis for rotation 63 is eccentric by a predetermined amount along the same locus as that of the first rotation transmission board 52, the rotation of the rotation axis 63 for rotation is the same as that of the first rotation transmission board 52. Is transmitted to

In this way, the polishing disc 65 revolves while rotating by the rotational motion of the revolving transmission shaft 60 and the rotating rotary shaft 63.

On the other hand, with respect to the polishing member 65a of the polishing board 65, the jig board 10 is restricted from moving in the rotation direction by the rotation stopping pin 68 and is urged toward the polishing board 65 by the pressing shaft 67. Then, the end face of the ferrule is pressed against the polishing member 65a.

Thus, the tip of the ferrule is processed into an ideal convex spherical surface.

(Other Embodiments) Although the embodiments of the present invention have been described above, the basic configuration of the jig board is not limited to the above-described one.

In the above-described embodiment, the holding members 30A to 30A
Although 30C has a structure for holding the SC, FC, and ST optical connector plugs, the present invention is not limited to this. For example, a holding member capable of holding a ferrule may be provided.

Further, in the above-described embodiment, the engagement between the jig board main body and the holding member is performed in a plane direction by the projection provided on the jig board main body and the engaging hole provided on the holding member. However, the engagement between the jig board main body and the holding member is not particularly limited.For example, a groove is provided in the side surface of the notch in the surface direction, and the side surface of the holding member is provided with the groove. It is also possible to provide a projection that engages with the groove so that the holding member is engaged with the jig board body in the surface direction. In this way, if the jig board main body and the holding member are engaged in the surface direction, the various optical connector plugs held by the holding member can be easily positioned and held by the pressing force at the time of polishing. The member does not come off.

[0056]

As described above in detail in the embodiment, according to the jig board of the present invention, the holding member holding the ferrule or various optical connector plugs holding the ferrule is detachably fixed to the jig board. The ferrules held by the optical connector plugs having different shapes can be simultaneously polished without replacing the jig board. Therefore, the polishing process can be simplified and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view and a top view of a jig board according to an embodiment of the present invention.

FIG. 2 is a front view and a cross-sectional view of a jig board according to one embodiment of the present invention.

FIG. 3 is a perspective view and a cross-sectional view of a holding member that holds the SC optical connector plug according to one embodiment of the present invention.

FIG. 4 is a perspective view and a cross-sectional view of a holding member for holding the FC type optical connector plug according to one embodiment of the present invention.

FIG. 5 is a perspective view and a cross-sectional view of a holding member that holds the ST type optical connector plug according to one embodiment of the present invention.

FIG. 6 is a partial cross-sectional view of an end face polishing apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Jig board 15 Boss part 16 Tapered hole 17 Engagement groove 20 Jig board main body 21 Notch part 22, 23 Projection part 24 Lock part 25 Screw member 30A SC type optical connector plug holding member 30B FC type optical connector plug Holding member 30C ST type optical connector plug holding member 31A-31C Base portion 32 Extension portion 33, 35 Engagement hole 34 V groove 36A-36C Recess 37A-37C Engagement protrusion 38A-38C Ferrule insertion hole 39 Locking protrusion Reference Signs List 40 holding portion 41 support portion 42 first cylindrical portion 43 second cylindrical portion 44 arm portion 45 step portion 46 compression spring 51 rotation motor 52 first rotation transmission plate 54 rotation transmission plate 56 second rotation transmission plate 57 revolution motor 58 Drive gear 59 Follower gear 60 Revolution transmission shaft 61 Device main body 63 Rotating rotation shaft 65 Polishing machine 65a Polishing member 6 support mechanism 67 holding shafts 68 rotate stop pin

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Kazuhiko Arai 1-8-8 Nakase, Mihama-ku, Chiba-shi, Chiba F-term in Seiko Instruments Inc. 2H036 QA13 QA21 QA29 2H038 CA22 3C034 AA13 BB75 DD08 3C049 AA07 AB04 AB08 AB09 CB03 CB04

Claims (3)

[Claims] 1. A jig disk attached to an end surface polishing device for polishing an end surface of a ferrule and arranged at a position facing a polishing disk, wherein the jig disk has a mounting portion to the end surface polishing device at a substantially central portion. A jig board comprising: a main body; and a holding member for detachably holding a ferrule and an optical connector plug, wherein the holding member is replaceable with ones corresponding to various optical connector plugs. 2. A jig according to claim 1, wherein said holding member is detachably engaged with a notch portion opened in a peripheral portion of said jig board body by moving in a plane direction. Board. 3. A jig board according to claim 1, wherein said optical connector plug is an SC type, FC type or ST type optical connector plug.