JP2009128514A - Optical fiber cutter and optical fiber end treating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical fiber cutter capable of cutting an optical fiber accurately by removing a cladding surely, and to provide a method for connecting and treating the optical fiber. <P>SOLUTION: The optical fiber cutter 10 for cutting the optical fiber 70 incorporating a glass fiber in the cladding is provided with clamps 15, 16 for clamping the optical fiber 70, pad members 17, 18 for placing a cut portion 71 of the optical fiber 70 thereon, a cladding marring mechanism 19 for marring the cladding of the optical fiber 70 placed on the pad members 17, 18, and an initial marring mechanism 41 for initially marring the glass fiber of the optical fiber 70 placed on the pad members 17, 18. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an optical fiber cutting machine and an optical fiber terminal processing method for cutting, for example, an optical fiber housed in an optical connector.

  As an example of an optical fiber cutting machine and an optical fiber terminal processing method, the outer peripheral edge of the blade member is brought into contact with the optical fiber by moving the slider between the upper and lower clamps and moving the slider to the coated portion of the optical fiber. There has been known one in which a cutting member and a blade member are brought into contact with a glass fiber of an optical fiber to be damaged and broken (for example, see Patent Document 1).

JP 2006-284839 A

  However, in the optical fiber cutting machine and the optical fiber terminal processing method disclosed in Patent Document 1, the outer peripheral edge of the blade member is brought into contact with the optical fiber and cut into the coating portion of the optical fiber to remove the blade member. Is brought into contact with a glass fiber of an optical fiber so as to be broken. In other words, Patent Document 1 is based on the assumption that cutting is performed with the covering portion attached, and the connection is made with the covering portion attached. Therefore, if the glass fibers are eccentric, it is difficult to match the centers of the glass fibers, and when high-accuracy connection is required, it is difficult to achieve connection accuracy.

  Therefore, an object of the present invention is made in view of the above-mentioned circumstances, and at the same time as cutting with the covering portion attached, at the same time, the covering portion can be scratched so that the covering portion at the tip can be easily removed. It is an object of the present invention to provide an optical fiber cutting machine and an optical fiber terminal processing method.

  An optical fiber cutting machine according to the present invention that can solve the above-mentioned problems is an optical fiber cutting machine that cuts an optical fiber in which a glass fiber is embedded in a covering portion, the clamp that holds the optical fiber, and the light A pillow member on which a fiber cutting portion is placed, a covering portion scratching mechanism for scratching the covering portion of the optical fiber placed on the pillow member, and the optical fiber placed on the pillow member And an initial scratching mechanism for imparting an initial scratch to the glass fiber.

  According to the optical fiber cutting machine configured in this way, after the optical fiber is gripped by the clamp and the optical fiber cutting part is placed on the pillow member, the optical fiber cutting machine is held by the covering member scratching mechanism on the pillow member. The covered portion of the optical fiber is scratched and cut, and the initial scratch is applied to the glass fiber of the optical fiber held by the pillow member by the initial scratching mechanism. Thereby, the coating | coated part of a front-end | tip can be easily removed after cutting | disconnection.

  Moreover, in the optical fiber cutting machine according to the present invention, it is preferable that the covering portion scratching mechanism and the initial scratching mechanism are arranged at opposite positions or the same position via the optical fiber.

  According to the optical fiber cutting machine configured as described above, when the covering portion scratching mechanism and the initial scratching mechanism are arranged at the opposing positions via the optical fiber, the light that has been scratched and has been cut. An initial flaw can be applied to the glass fiber of the optical fiber by an initial flaw scratching mechanism from the opposite side of the fiber coating. Also, unlike this, when the covering portion scratching mechanism and the initial scratching mechanism are arranged at the same position via the optical fiber, they are the same as the covering portion of the optical fiber that has been scratched and cut. From the side, the initial flaw can be imparted to the glass fiber of the optical fiber by the initial flaw scratching mechanism.

  Further, in the optical fiber cutting machine according to the present invention, the covering portion is a primary covering portion disposed around the glass fiber, and a secondary covering portion disposed around the primary covering portion, It is preferable that the covering portion scratching mechanism scratches at least the secondary covering portion.

  According to the optical fiber cutting machine configured as described above, the covering portion scratching mechanism scratches the secondary covering portion disposed on the outer peripheral side of the primary covering portion and the secondary covering portion of the covering portion, Since the overall rigidity of the covering portion is lowered, the covering portion can be easily removed during connection.

  In the optical fiber cutting machine according to the present invention, it is preferable that the covering portion scratching mechanism includes a covering portion cutting blade member that makes a cut in the longitudinal direction of the optical fiber with the pillow member.

  According to the optical fiber cutting machine configured as described above, the covering portion is scratched by the covering portion cutting mechanism by cutting the optical fiber in the longitudinal direction with the covering portion cutting blade member. Can be efficiently removed.

  In the optical fiber cutting machine according to the present invention, the pillow member includes an optical fiber holding groove on which the optical fiber is placed, and a fiber cutting blade member included in the initial scratching mechanism. It is preferable that a blade member escape groove is provided in the traveling direction.

  According to the optical fiber cutting machine configured in this way, the optical fiber is held in the optical fiber holding groove of the pillow member, so that the cutting position is accurately set without causing a positional shift or the like. Then, when the fiber cutting blade member of the initial scratching mechanism advances toward the optical fiber, the initial scratch is surely applied to the optical fiber by entering the blade member relief groove of the pillow member. be able to.

  In the optical fiber cutting machine according to the present invention, it is preferable that the optical fiber holding groove of the pillow member is formed in a V shape or a U shape.

  According to the optical fiber cutting machine configured as described above, the optical fiber holding groove of the pillow member is formed in a V shape, so that various optical fibers having different outer diameters can be cut. Unlike this, the optical fiber holding groove of the pillow member is formed in a U shape, so that the optical fiber holding groove can be brought into surface contact with the optical fiber, so that the optical fiber is stably held. can do.

  An optical fiber terminal processing method according to the present invention capable of solving the above-mentioned problems is an optical fiber terminal processing method used for connection by cutting an optical fiber having a glass fiber embedded in a covering portion, The step of gripping the optical fiber, the step of placing the cut portion of the optical fiber on the pillow member, and the wound portion scratching mechanism damages only the covering portion of the optical fiber placed on the pillow member. And a step of applying an initial flaw to the glass fiber of the optical fiber placed on the pillow member by an initial flaw scratching mechanism.

  According to the optical fiber terminal processing method thus configured, after the step of holding the optical fiber by the clamp, the step of holding the cut portion of the optical fiber by the pillow member is performed, and then the covering portion scratching mechanism is used. A step of scratching and cutting the coating portion of the optical fiber held by the pillow member, a step of applying an initial scratch to the glass fiber of the optical fiber held by the pillow member by the initial scratching mechanism, I do. Thereby, it can cut | disconnect with a coating | coated part, and since it is easy to remove a coating | coated part at the time of a connection, it is hard to occur at the time of a connection, or a damage | wound does not occur easily, and it can connect with high precision.

  Moreover, in the optical fiber terminal processing method according to the present invention, it is preferable that the method includes a step of pressing the optical fiber having the damaged covering portion pressed against a covering removing member to remove the covering portion.

  According to the optical fiber terminal processing method configured as described above, since the coating portion can be removed by the coating removing member in the terminal processing step, the removal state of the coating portion can be confirmed, and the connection can be performed with higher accuracy. can do.

  According to the optical fiber cutting machine and the optical fiber terminal processing method according to the present invention, the light that can be cut with the covering portion attached, and can be applied to the covering portion so that the covering portion at the tip can be easily removed. A fiber cutting machine and an optical fiber terminal processing method can be provided.

  Hereinafter, a plurality of preferred embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
1 to 6 show a first embodiment of an optical fiber cutting machine and an optical fiber terminal processing method according to the present invention.

  As shown in FIGS. 1 and 2, the optical fiber cutting machine 10 constitutes an upper body 11, a lower body 12, and another part of the initial scratching mechanism that constitute a part of the initial scratching mechanism. A fiber cutting blade member 13, a fiber holder 14, a pair of clamps 15 and 16, a pair of pillow members 17 and 18, and a covering portion cutting blade member 19 constituting a part of the covering portion scratching mechanism. And a blade pressure setting portion 20 constituting another part of the covering portion scratching mechanism, and a scratch vent type optical fiber cutter.

  The upper body 11 has a base end portion rotatably connected to a base end portion of the lower body 12 via a pivot 21, and a direction in which the tip end portion is separated from the tip end portion of the lower body 12 by a return spring (not shown). Is always energized.

  The fiber cutting blade member 13 is made of stainless steel, is disposed on the lower surface of the upper body 11, and is assembled to the slide operation unit 22 disposed on the upper surface of the upper body 11. The fiber cutting blade member 13 is advanced stepwise by the slide operation unit 22 being pressed toward the tip of the upper body 11. Since the fiber cutting blade member 13 is continuously formed so as to be cut freely, it can be set by cutting a used part after a certain number of uses and advancing a new blade member. The blade member can be used for a long time without changing or polishing the blade member every time. On both sides of the fiber cutting blade member 13, a pressing member 23 disposed so as to face the clamps 15 and 16 is assembled.

  The fiber holder 14 is formed to project from the side of the lower body 12 and includes a fiber presser 24 that can be opened and closed. The fiber holder 14 places the optical fiber 70 on the upper surface and then closes the fiber pressing portion 24 so that the optical fiber 70 is disposed and supported on the processing portion 25 at the distal end portion of the lower body 12. .

  The clamps 15 and 16 are assembled to both sides of the processing unit 25 of the lower body 12. The clamps 15 and 16 provide the bending tension by disposing the cutting portion 71 of the optical fiber 70 supported by the fiber holder 14 at the center position and pressing the pressing member 23 of the upper body 11 from above. Then, the cutting part 71 of the optical fiber 70 is supported.

  Each of the pillow members 17 and 18 is formed in a block shape having V-shaped optical fiber holding grooves 28 and 29, and has a blade member relief groove 30 between them. The optical fiber holding grooves 28 and 29 have an opening angle of 60 to 90 degrees. Since the pillow members 17 and 18 are arranged side by side between the clamps 15 and 16, the cut portions 71 of the optical fiber 70 supported by the clamps 15 and 16 are held in the optical fiber holding grooves 28 and 29. . The blade member relief groove 30 preferably has, for example, a width dimension obtained by adding 0.5 mm or less to the width dimension of the fiber cutting blade member 13. The pillow members 17 and 18 maintain a drag force when the fiber cutting blade member 13 is pushed forward, and apply a bending tension when the glass fiber is cut.

  The covering portion cutting blade member 19 is made of the same stainless steel as the fiber cutting blade member 13 and is sharply formed, and is assembled to the tops of the optical fiber holding grooves of the pillow members 17 and 18, respectively. And by being coupled to the blade pressure setting section 20, it is provided at the top of the optical fiber holding grooves 28, 29 so as to be able to advance and retreat up and down in the direction protruding into the optical fiber holding grooves 28, 29 and in the retracting direction. Yes.

  The blade pressure setting unit 20 is an urging means using an urging spring and is assembled to the lower part of the pillow members 17 and 18. Since the blade pressure setting unit 20 has a function of setting the position of the covering portion cutting blade member 19, the position of the covering portion cutting blade member 19 is changed via an urging spring to cut the fiber. The initial scratch amount by the blade member 13 is arbitrarily set. The blade pressure setting unit 20 is disposed at a position facing the fiber cutting blade member 13 together with the covering portion cutting blade member 19.

  As shown in FIG. 2, the optical fiber 70 has a glass fiber 72 as a core material, a primary covering portion 73 disposed on the outer periphery thereof, and a secondary covering portion 74 disposed on the outer periphery of the primary covering portion 73. The glass fiber 72 is, for example, φ125 μm, the primary coating portion 73 is, for example, φ180 to 200 μm, and the secondary coating portion 74 is, for example, φ250 μm.

  The covering portion cutting blade member 19 is formed in a T-shape in a longitudinal sectional view, has a blade length of about 1 to 5 mm, and is in the direction of the optical fiber holding grooves 28 and 29 of the pillow members 17 and 18. The optical fiber 70 is arranged with a length in the axial direction. The covering portion cutting blade member 19 has a base 31 coupled to the blade pressure setting portion 20.

  Next, an optical fiber cutting method to which the optical fiber cutting machine 10 is applied will be described with reference to FIGS.

  As shown in FIG. 3, in the first step, the optical fiber 70 is disposed on the clamps 15 and 16 of the processing unit 25 of the lower body 12 by the fiber holder 14. In the second step, the optical fiber 70 is held in the optical fiber holding grooves 28 and 29 of the pillow members 17 and 18. At this time, the covering-part cutting blade member 19 is not in contact with the optical fiber 70 because it is disposed below the optical fiber 70.

  As shown in FIG. 4, in the third step, the upper body 11 is pressed downward against the return spring while being inserted into the blade member escape groove 30 between the pillow members 17 and 18. The fiber cutting blade member 13 is pressed downward. Therefore, the optical fiber 70 is pressed downward and moved toward the tops of the optical fiber holding grooves 28 and 29. As a result, the optical fiber 70 is pressed against the coating portion cutting blade member 19 in the optical fiber holding grooves 28 and 29, and the secondary coating portion 74 and the primary coating portion 73 of the optical fiber 70 are cut in the axial direction 75. Can be put. The cut amount of the cut 75 is 25 to 60 μm.

  At this time, since the coating member cutting blade member 19 contacts the optical fiber 70 via the blade pressure setting unit 20, the fiber cutting blade member 13 does not bite into the optical fiber 70, and the optical fiber 70 is covered with the coating portion. Stress enough to be pressed against the cutting blade member 19 is applied.

  As shown in FIG. 5, in the fourth step, the fiber cutting blade member 13 is pressed against the optical fiber 70 in which the cut 75 has been cut by the covering portion cutting blade member 19, and the glass fiber of the optical fiber 70. An initial scratch 76 is applied to a part of the outer peripheral portion of 72.

  Then, when the pillow members 17 and 18 are raised by the blade pressure setting unit 20, a bending stress is applied to the optical fiber 70 in which the initial scratch 76 is applied to the glass fiber 72, and the secondary covering part 74 and the primary covering part 73. At the same time, the glass fiber 72 is cut.

  As shown in FIG. 6, in the modification of the optical fiber cutting machine 10, each of the pillow members 17 and 18 has a block shape having U-shaped optical fiber holding grooves 32 and 33 similar to the outer shape of the optical fiber 70. Is formed. Therefore, the optical fiber 70 can be held in surface contact.

  As described above, according to the optical fiber cutting machine 10 of the present embodiment, the optical fiber 70 is gripped by the clamps 15 and 16, and the cutting portion 71 of the optical fiber 70 is placed on the pillow members 17 and 18. . And the secondary coating | coated part 74 and the primary coating | coated part 73 of the optical fiber 70 currently hold | maintained at the pillow member 17 and 18 by the coating | coated part cutting blade member 19 are damaged, the cut | notch 75 is put, and the fiber cutting blade member 13, initial scratches 76 are imparted to the glass fiber 72 of the optical fiber 70 held by the pillow members 17 and 18. Thereby, the coating | coated parts 73 and 74 of a front-end | tip can be easily removed after the optical fiber 70 is cut | disconnected.

  Further, according to the optical fiber cutting machine 10 of the present embodiment, the covering portion cutting blade member 19 and the fiber cutting blade member 13 are injured by being disposed at opposing positions via the optical fiber 70. An initial flaw 76 can be applied to the glass fiber 72 of the optical fiber 70 by the fiber cutting blade member 13 from the opposite side of the covering portions 73 and 74 of the optical fiber 70 into which the cut 76 has been cut.

  Further, according to the optical fiber cutting machine 10 of the present embodiment, the covering portion cutting blade member 19 is added to the primary covering portion 73 disposed on the inner peripheral side of the primary covering portion 73 and the secondary covering portion 74. By being damaged, the rigidity of the covering portions 73 and 74 is lowered as a whole. Thereby, the coating | coated parts 73 and 74 can be easily removed at the time of a connection.

  Further, according to the optical fiber cutting machine 10 of the present embodiment, the covering portions 73 and 74 are injured by the cutting 75 in the longitudinal direction of the optical fiber 70 by the covering portion cutting blade member 19. The partial removal of the parts 73 and 74 can be processed efficiently.

  Further, according to the optical fiber cutting machine 10 of the present embodiment, the optical fiber 70 is formed in the V-shaped optical fiber holding grooves 28 and 29 of the pillow members 17 and 18 or the U-shaped optical fiber holding grooves 32 and 33. By being held, the cutting position is accurately set without causing a positional shift or the like. Then, when the fiber cutting blade member 13 advances toward the optical fiber 70, it enters the blade member escaping groove 30 of the pillow members 17 and 18 so as to reliably apply the initial scratch 76 to the optical fiber 70. It can be carried out.

  Further, according to the optical fiber cutting machine 10 of the present embodiment, when the optical fiber holding grooves 28 and 29 of the pillow members 17 and 18 are formed in a V-shape, various optical fibers 70 having different outer diameters are cut. It can be performed. In contrast, when the optical fiber holding grooves 32 and 33 of the pillow members 17 and 18 are formed in a U shape, the optical fiber holding grooves 32 and 33 can be brought into surface contact with the optical fiber 70. Therefore, the optical fiber 70 can be held stably.

  Further, according to the optical fiber terminal processing method of the present embodiment, after the step of gripping the optical fiber 70 by the clamps 15, 16, the step of holding the cut portion 71 of the optical fiber 70 by the pillow members 17, 18 is performed. After that, the coating parts 73 and 74 of the optical fiber 70 are scratched by the coating part cutting blade member 19 to make a cut 75, and the glass fiber 72 of the optical fiber 70 is initially scratched by the fiber cutting blade member 13 76 is performed. Thereby, it can cut | disconnect with the coating | coated parts 73 and 74, and since it becomes easy to remove the coating | coated parts 73 and 74 at the time of a connection, it is hard to occur at the time of a connection, and a damage | wound does not occur easily. Can be connected.

(Second Embodiment)
Next, a second embodiment of the optical fiber cutting machine and the optical fiber terminal processing method according to the present invention will be described with reference to FIGS. In addition, about the component which overlaps with 1st Embodiment mentioned above, or a functionally similar component, description is simplified or abbreviate | omitted by attaching | subjecting the same code | symbol or an equivalent code | symbol in a figure.

  As shown in FIG. 7, the optical fiber cutting machine 40 according to the second embodiment includes a fiber cutting blade member 41 constituting an initial scratching mechanism and a covering portion cutting blade constituting a covering portion scratching mechanism. The member 42 is disposed on the same side on the upper body 11 side.

  The covering portion cutting blade member 42 is slightly shifted upward from the fiber cutting blade member 41 in the axial direction of the optical fiber 10 perpendicular to the fiber cutting blade member 41 at the center portion of the fiber cutting blade member 41. It is assembled integrally with the position. The covering portion cutting blade member 42 may be integrally formed with the fiber cutting blade member 41 by welding or the like.

  As shown in FIG. 8, in the third step of the optical fiber cutting method, the upper body 11 is pushed downward against the return spring, so that the blade member between the pillow members 17 and 18 is released. The fiber cutting blade member 41 is advanced downward while being inserted into the groove 30, and the optical fiber 70 is pressed downward and pressed to the top of the optical fiber holding grooves 28 and 29.

  As shown in FIG. 9, in the fourth step of the optical fiber cutting method, the coating portion cutting blade member 42 cuts in the axial direction in the secondary coating portion 74 and the primary coating portion 73 of the optical fiber 70, At the same time, the fiber cutting blade member 41 is pressed and advanced, and initial scratches 76 are given to a part of the outer peripheral portion of the glass fiber 72 of the optical fiber 70.

  The present embodiment has the same operational effects as the first embodiment. In particular, according to the present embodiment, the covering portion cutting blade member 42 and the fiber cutting blade member 41 are provided via the optical fiber 70. By being arranged at the same position, the glass fiber 72 of the optical fiber 70 is initially scratched by the fiber cutting blade member 41 from the same side as the coating portions 73 and 74 of the optical fiber 70 that has been scratched and cut into 75. 76 can be given.

The optical fiber cutting machine and the optical fiber terminal processing method according to the present invention are not limited to the above-described embodiments, and can be appropriately modified and improved.
For example, the coating member cutting blade member and the fiber cutting blade member have the same structure, and the same blade member is advanced until it is cut into the coating portion, and then moved in the axial direction while rotating the optical fiber. By doing so, the coating part is cut in a spiral. Thereafter, the same blade member may be further advanced until the glass fiber is initially scratched.

An example of removing the covering portion of the optical fiber with a cut cut in the first and second embodiments described above will be briefly described with reference to FIGS.
As shown in FIG. 10, the cut optical fiber 70 is fitted with an optical connector 80 as an optical connection member at a work site. The optical connector 80 includes a ferrule 81 having a glass fiber insertion hole 83 into which a short optical fiber 82 is inserted, and a state in which the tip of the optical fiber 70 is inserted into the glass fiber insertion hole 83 and is abutted against the short optical fiber 82. And a fixing portion 84 to be fixed. Then, the optical fiber 70 having the coating portions 73 and 74 on the outer periphery of the glass fiber 72 is inserted into the optical connector 80 to remove the coating portions 73 and 74 from the end portion of the optical fiber 70 by an insertion force. A removal unit 85 is provided.

  As shown in FIG. 11A, cuts 75 are made in the covering portions 73 and 74 from the end face of the optical fiber 70 to the covering removal length. Then, when the optical fiber 70 is pressed into the glass fiber insertion hole 83, the end portions of the desired lengths of the covering portions 73 and 74 are moved outside the covering removing portion 85 along the cuts 75 as shown in FIG. Removed to spread.

1 is an external perspective view of an optical fiber cutting machine to which an optical fiber cutting machine and an optical fiber connection processing method according to a first embodiment of the present invention are applied. It is a principal part enlarged view of the optical fiber cutting machine of FIG. It is sectional drawing around the optical fiber of the 1st process and 2nd process explaining the connection processing method of the optical fiber using the optical fiber cutting machine of FIG. It is sectional drawing around the optical fiber of the 3rd process explaining the connection processing method of the optical fiber using the optical fiber cutting machine of FIG. It is sectional drawing around the optical fiber of the 4th process explaining the connection processing method of the optical fiber using the optical fiber cutting machine of FIG. It is sectional drawing around the optical fiber of the modification of the optical fiber cutting machine of FIG. It is a principal part enlarged view of the optical fiber cutting machine which concerns on 2nd Embodiment of this invention. It is sectional drawing around the optical fiber of the 3rd process explaining the connection processing method of the optical fiber using the optical fiber cutting machine of FIG. It is sectional drawing around the optical fiber of the 4th process explaining the connection processing method of the optical fiber using the optical fiber cutting machine of FIG. It is sectional drawing which shows an example which connects an optical fiber to an optical connector. (A) is sectional drawing of the optical fiber edge part which provided the notch | incision, (B) is sectional drawing which shows the state which pressed the optical fiber to the insertion hole.

Explanation of symbols

10 Optical fiber cutting machine 13 Fiber cutting blade member (Initial scratching mechanism)
15 Clamp 16 Clamp 17 Pillow member 18 Pillow member 19 Cover member cutting blade member (cover portion scratching mechanism)
20 Blade pressure setting part (coating part wound mechanism)
28 Optical Fiber Retention Groove 29 Optical Fiber Retention Groove 30 Blade Member Relief Groove 32 Optical Fiber Retention Groove 33 Optical Fiber Retention Groove 40 Optical Fiber Cutting Machine 41 Fiber Cutting Blade Member (Initial Wound Injury Mechanism)
42 Blade member for cutting the coating part (coating part scratching mechanism)
70 Optical fiber 72 Glass fiber 73 Primary coating (coating)
74 Secondary covering part (covering part)
75 Notch 76 Initial wound

Claims (8)

An optical fiber cutting machine for cutting an optical fiber having a glass fiber embedded in a coating part,
A clamp for gripping the optical fiber;
A pillow member on which the cut portion of the optical fiber is placed;
A covering portion scratching mechanism for scratching the covering portion of the optical fiber placed on the pillow member;
An optical fiber cutting machine comprising: an initial scratching mechanism that applies an initial scratch to the glass fiber of the optical fiber placed on the pillow member.   2. The optical fiber cutting machine according to claim 1, wherein the covering portion scratching mechanism and the initial scratching mechanism are arranged at opposite positions or in the same position via the optical fiber. The covering portion is a primary covering portion disposed around the glass fiber, and a secondary covering portion disposed around the primary covering portion,
The optical fiber cutting machine according to claim 1 or 2, wherein the covering portion scratching mechanism scratches at least the secondary covering portion.   The said coating | coated part wound mechanism is equipped with the coating | coated part cutting blade member which cuts in the longitudinal direction of the said optical fiber with the said pillow member, The any one of Claims 1-3 characterized by the above-mentioned. An optical fiber cutting machine described in 1.   The pillow member includes an optical fiber holding groove on which the optical fiber is placed, and includes a blade member relief groove in the traveling direction of the fiber cutting blade member included in the initial scratching mechanism. The optical fiber cutting machine according to any one of claims 1 to 4, wherein the optical fiber cutting machine is provided.   The optical fiber cutting machine according to any one of claims 1 to 5, wherein the optical fiber holding groove of the pillow member is formed in a V shape or a U shape. An optical fiber terminal processing method used for connection by cutting an optical fiber having a glass fiber embedded in a covering portion,
Gripping the optical fiber in a clamp;
Placing the optical fiber cutting portion on the pillow member;
A step of scratching only the covering portion of the optical fiber placed on the pillow member by a covering portion scratching mechanism;
Applying an initial flaw to the glass fiber of the optical fiber placed on the pillow member by an initial flaw scratching mechanism. The optical fiber terminal processing method according to claim 7, further comprising a step of pressing the optical fiber with the covering portion damaged against a covering removing member to remove the covering portion.

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