CN100492071C - Optical Fiber End Face Grinding Tool - Google Patents

Abstract

An optical fiber end face grinding tool is used for combining an optical fiber to be ground and comprises a body, a grinding head and a grinding head, wherein the body is provided with a fixing groove; the fixing groove is used for accommodating the fixing rod; the upper end of the fixed rod is combined with the bracket; the body is combined with a plurality of clamps, and each clamp is combined with a ferrule; the bottom of the fixed rod is provided with a sleeve joint part with a protruding outer diameter, so that the part of the fixed rod except the sleeve joint part is not contacted with the fixed groove; the fixed groove is recessed below the body, so that the contact surface between the bottom of the fixed rod and the fixed groove and the contact surface between the polished end surface of the optical fiber and the polished surface are approximately on the same plane, and the polished end surfaces of the same batch of operation have the same polished shape, thereby improving the polishing speed and quality.

Description

Optical Fiber End Face Grinding Tool

technical field

The invention relates to a device for grinding the end face of a workpiece, in particular to a device for arranging the end face of an optical fiber to be ground.

Background technique

Optical fiber communication is an indispensable tool for current and future communication technology. Just like the communication components of a wired communication system, signal lines and signal connectors are required to be connected together. Fiber optic communication systems also require fiber optic connectors. The optical fiber connector is mainly made by passing the optical fiber through a ferrule with a hole in the middle, and then sticking it with an adhesive. This ferrule can be made of plastic, glass or ceramics. Place the end face of the optical fiber with the ferrule on the elastic grinding surface and pressurize it, and then rough grind, fine grind, and polish to form a convex spherical surface. This convex sphere must be a mirror without blemishes. The optical axis of the convex sphere can be parallel to the center line of the optical fiber or can form a small oblique angle.

For the grinding of the fiber end face, elastic grinding surfaces are used at least during fine grinding and polishing. As shown in Figure 1. Place the workpiece 1 to be ground on the elastic grinding surface 2, apply pressure 3 on the workpiece 1, make the elastic grinding surface 2 produce a concave surface, and grind the workpiece 1 with a protruding end surface. Because the cross-section of the optical fiber is small, the time required for rough grinding, fine grinding and polishing is about ten to tens of seconds, which is much shorter than the time required for traditional optical lens grinding. When polishing the end face of the optical fiber, the grinding intensity of each optical fiber end face on the optical fiber end face at the same time, or in a relatively short period of time, the average grinding intensity must be the same, otherwise there will be unevenness after grinding.

Basically, the degree of wear of the workpiece is related to many factors, and the main ones are the following two factors:

1. The average relative velocity between the grinding surface and the workpiece; and

2. The pressure between the grinding surface and the workpiece.

In the traditional optical fiber end-face grinding, the optical fiber end-face holder is stationary, while the grinding surface has rotation and revolution movement. As shown in Figure 2, ψ is the rotation angle, and θ is the revolution angle. According to the mathematical analysis disclosed in Taiwan Patent Publication No. 485863, "Optical Fiber End Face Grinding Equipment" invented by the inventor, there is a certain The average relative velocity between a point and the grinding surface is:

Average relative velocity = (r ₁ ) ² ψ ² +R ² (ψ-θ) ² ...(1), where

R: the distance from the revolution center to the rotation center; ψ

ψ: angular velocity of rotation;

θ: angular velocity of revolution;

r ₁ : the distance from a certain point on the optical fiber end face to the center of revolution.

During the grinding process, the revolution angular velocity θ and the rotation angular velocity ψ are usually fixed. It can be seen from formula (1) that the average relative velocity at different points on the fiber end face is different. And if r ₁ is the same, that is, r ₁ is the same on the circle centered on the midpoint of the revolution, at this time, if the pressure of each point on the circle is the same, then the wear degree of each point on the circle is the same. If let ψ=0, that is to say, the grinding surface has only revolution and no rotation, then the average relative speed=R ² θ ² , at this time, if the pressure on each fiber end face and the grinding surface on the fiber end face mounting tool is uniform, then each The degree of wear on the end faces is the same.

In addition, the above-mentioned patent proposes that if the grinding surface is made into a strip shape, the abrasive particles on one side of the strip shape are thicker, while the particles on the other side are finer. After proper arrangement, the pressure between the fiber end face and the grinding surface placed at different positions on the tool can be made uniform. Then the optical fiber end-face tool can be slid from the side with thicker particles to the side with finer particles to directly complete the rough grinding and polishing process at one time.

As shown in Figure 3. Place several optical fiber end faces on tools 4, 5, 6 and slide on the elongated grinding surface 7 at the same time. The grain of the grinding surface 8 on the right is coarser, while that of the grinding surface 9 on the left is finer. The invention can solve the problem of uniform distribution of pressure on the end surfaces of the optical weaving at different positions between the grinding surface and the tool.

Basically there are two reasons for uneven pressure:

1. The support point of the optical fiber end face is not on the force surface generated by the friction between the end face of the optical fiber and the grinding surface. As a result, a torsion force is generated, which makes the device tilt, resulting in uneven pressure.

2. If the optical fiber end face holder is clamped and fixed, the non-parallelity between the grinding surface and the holder will also cause uneven pressure.

Please refer to Figure 4 and Figure 5. The known optical fiber end-face grinding equipment includes a grinding surface 21 , an optical fiber end-face ferrule 22 , an optical fiber end-face holder 23 , and a pressure fixing rod 24 . The end of the optical fiber 25 to be polished is combined in the fiber end ferrule 22 . When the end face of the optical fiber 25 moves relative to the grinding surface 21, the optical fiber end face mounting tool 23 is subjected to a transverse force at the end face. But at this moment, the fulcrum is at the position of the contact point 31 or the contact point 32, so the optical fiber end face setting device 23 is subjected to a counterclockwise torsion force, resulting in an inclined state as shown in Figure 5, so that the optical fiber end face 251 is lower than the optical fiber end face 252, That is, the pressure on the end surface 251 is greater than that on the end surface 252 .

In order to solve this problem, U.S. Patent No. US 5,216,846 discloses to use a spacer (spacer) to keep the distance between the workpiece and the grinding surface. Because the grinding surface is an elastic grinding surface, keeping a distance means maintaining pressure. In this method, because part of the uneven pressure is borne by the spacer, there will be some improvement, but its basic structure has not changed, and the torsion force still exists, so the uneven pressure factor still exists.

In addition, U.S. Patent No. US 6,039,630 discloses the use of a pressure sensor to measure instantaneous pressure, and then electronically controls the spring to compensate for uneven pressure.

In addition, U.S. patents US 6077154, US 5351445, etc., propose a design for clamping and fixing the end face of the optical fiber, as shown in Figure 6. Wherein, the optical fiber end surface mounting tool 41 is combined with a plurality of optical fiber clamps 42 , and the optical fiber clamps 42 clamp the optical fibers 43 . The clamp 42 fixes the optical fiber end face holder 41 above the grinding surface 45 . With this design, because the optical fiber end-face holder 41 is clamped and fixed, there will be no tilting problem caused by torsion. But there is a problem, because the setting tool 41 is clamped and fixed, and the direction of the grinding surface 45 is also fixed, so in general, the setting tool 41 and the grinding surface 45 must not be very precisely parallel. In this case, it is common practice to adjust the angle of the jig 42 that fixes the setting tool 41 . But this is not a natural contact, there will always be a little bit of inconsistency. In addition, with this design, the pressure between the end face of the optical fiber 43 and the grinding surface 45 is exerted from below to above. This method is too complicated and inconvenient for automation. In addition, if the design of the grinding surface is long as shown in Figure 3, and there are several optical fiber end face holders, and at the same time slide on this long grinding surface, it is necessary to keep the different positions of each holder. It is even more difficult if the pressure on the fiber end face is uniform.

In addition, when the pressure is not uniform, in addition to making the grinding quality of the optical fiber end face poor, especially if a very large number of optical fiber end faces are ground at the same time on the tool, the part with less pressure will inevitably take more time to be polished, so It affects the grinding efficiency, so when more fiber end faces are polished at one time, it is more important whether the pressure distribution is uniform.

Contents of the invention

Through the analysis of the aforementioned known technologies, the inventor invented the most ideal design principle of the optical fiber end-face device as follows:

1. The optical fiber end face holder cannot be clamped and fixed, and the holder and the polishing surface must be in natural contact. That is to say, if there is any up-and-down swing on the grinding surface, the set tool should also swing up and down accordingly, and when swinging up and down, the average pressure on the end faces of different positions on the set tool must be uniform.

2. The plane formed by the end face of the optical fiber during the grinding process is the force application surface on which the grinding surface exerts force on the tool. Because in the grinding process, in principle, the optical fiber end face tool does not move or rotate with the grinding surface. Therefore, it is necessary to design one or several fulcrums of the optical fiber end-face mounting tool. In order to make the pressure uniform, these fulcrums must be on the force application surface to keep the fiber end-face holder from moving or rotating with the grinding surface.

The main purpose of the present invention is to provide an optical fiber end face grinding device, so that the fulcrum of the device is on the plane formed by the force-applying surface. In the actual grinding process, the fulcrum should be less than 20mm above and below the force-applying surface, preferably within 10mm, so as to avoid the phenomenon of uneven pressure caused by the inclined state of the tool.

Another object of the present invention is to provide an optical fiber end face grinding device, in which a weight is directly placed at an appropriate position on the device, or a spring, air pressure, oil pressure or weight is used to pressurize the fixed rod, and then the fixed rod The pressurization method is applied to the holder so that the end face of the optical fiber on the holder and the polished surface form a natural contact.

The present invention is a kind of optical fiber end surface grinding device, which is used to combine the optical fiber to be polished, and is characterized in that it includes a body with a fixing groove; the fixing groove accommodates a fixing rod; the upper end of the fixing rod is combined with a bracket; The optical fiber clamp is used to combine the optical fiber to be polished; the bottom of one of the above-mentioned fixing rod and the above-mentioned fixing groove has a protruding sleeve part, so that the above-mentioned fixing rod and the above-mentioned fixing groove are not separated from each other except at the above-mentioned sleeve part. Contact; the above-mentioned fixing groove is recessed below the above-mentioned body, so that the contact area between the above-mentioned sleeve part and the above-mentioned fixing groove is less than 20 cm from the upper and lower sides of the contact surface between the grinding end surface of the above-mentioned optical fiber and the grinding surface; wherein The above-mentioned fixed rod is stressed and presses down on the above-mentioned body.

The above-mentioned fixing groove is arranged at the center of the above-mentioned body, and the periphery of the sleeve portion and the above-mentioned fixing groove have shapes corresponding to concave-convex surfaces, so that there is no rotation between the above-mentioned fixing rod and the above-mentioned fixing groove.

Wherein the periphery of the above-mentioned body has a plurality of above-mentioned symmetrical fixing grooves.

The present invention is a kind of optical fiber end surface grinding device, which is used to combine the optical fiber to be polished, and is characterized in that it includes a body with a fixing groove; the fixing groove accommodates a fixing rod; the upper end of the fixing rod is combined with a bracket; The optical fiber clamp is used to combine the optical fiber to be polished; the bottom of one of the above-mentioned fixing rod and the above-mentioned fixing groove has a protruding sleeve part, so that the above-mentioned fixing rod and the above-mentioned fixing groove are not separated from each other except at the above-mentioned sleeve part. Contact; the above-mentioned fixing groove is recessed below the above-mentioned body, so that the contact area between the above-mentioned socket part and the above-mentioned fixing groove is less than 20 cm from the upper and lower sides of the contact surface between the polished end surface of the above-mentioned optical fiber and the polished surface; wherein the above-mentioned The fixing groove is set at the center of the above-mentioned body, and the periphery of the above-mentioned socket part and the above-mentioned fixing groove have a shape corresponding to the concave-convex surface, so that there will be no rotation between the fixing rod and the above-mentioned fixing groove; wherein the side of the above-mentioned body near the periphery It has a plurality of symmetrical accommodation grooves for accommodating weights.

Wherein the contact surface between the bottom end of the fixing rod and the body is an arc surface.

Wherein the shape of the above-mentioned body is selected from one of circle and square.

Wherein the shape of the accommodating groove is selected from one of arc groove shape, cylindrical shape and long groove shape.

The present invention is a kind of optical fiber end surface grinding device, which is used to combine the optical fiber to be polished. Contact member; a plurality of symmetrical brackets respectively have positioning members corresponding to the above-mentioned contact members; the above-mentioned multiple contact members and the above-mentioned multiple positioning members are respectively one of the corresponding fixing rods and accommodating slots, and the above-mentioned multiple fixing The rods are respectively placed in the above-mentioned corresponding accommodating slots, so that the above-mentioned multiple contact members are restricted by the above-mentioned corresponding positioning members during the grinding process; the contact area between the above-mentioned multiple contact members and the above-mentioned corresponding positioning members, the distance The upper and lower sides of the contact surface between the polished end surface of the optical fiber and the polished surface are less than 20 cm; wherein the above-mentioned fixing rod is forced to press down on the above-mentioned body.

Wherein the above-mentioned clamp is combined with a ferrule arranged obliquely to combine the optical fiber to be polished arranged obliquely.

Wherein the clamp is combined with ferrules, and the gaps between the plurality of ferrules are filled with at least one material selected from wax, rosin and plastic materials.

Wherein the clamp is combined with ferrules, and the plurality of ferrules includes at least one dummy ferrule.

Wherein the contact area between the socket portion and the fixing groove is less than 10 cm from the upper and lower sides of the contact surface between the polished end surface of the optical fiber and the polished surface.

The present invention is a kind of optical fiber end surface grinding device, which is used to combine the optical fiber to be polished. Contact member; a plurality of symmetrical brackets respectively have positioning members corresponding to the above-mentioned contact members; the above-mentioned multiple contact members and the above-mentioned multiple positioning members are respectively one of the corresponding fixing rods and accommodating slots, and the above-mentioned multiple fixing The rods are respectively placed in the above-mentioned corresponding accommodating slots, so that the above-mentioned multiple contact members are restricted by the above-mentioned corresponding positioning members during the grinding process; the contact area between the above-mentioned multiple contact members and the above-mentioned corresponding positioning members, the distance The upper and lower sides of the contact surface between the polished end surface of the optical fiber and the polished surface are less than 20 cm; wherein the periphery of the above-mentioned body has a plurality of symmetrical accommodation grooves for accommodating weights.

One of the bottoms of the plurality of fixing rods and the corresponding fixing slots has a protruding socket portion.

Wherein the material of the above-mentioned false ferrule is selected from one of metal, plastic, glass and ceramics.

Wherein the bracket is frame-shaped and has a pair of concave sides, and the accommodating groove is arranged on the concave sides.

Wherein the bracket is in the shape of a frame, one end of which is frame-connected to one side of the base of the grinding surface;

Wherein the above-mentioned fastening unit includes one end of the two buckle ears pivotally connected to the two sides of the above-mentioned base respectively; the two sides of the above-mentioned bracket have tenons corresponding to the above-mentioned two buckle ears, and the button holes of the above-mentioned buckle ears can buckle the above-mentioned tenon, so that the above-mentioned bracket is combined with the above-mentioned base.

Description of drawings

For other purposes, effects and embodiments of the present invention, please refer to the accompanying drawings and detailed descriptions in conjunction with the embodiments as follows, wherein:

Fig. 1 is a schematic diagram of a general elastic grinding surface to grind a workpiece.

Fig. 2 is a coordinate diagram of the mathematical analysis of the general grinding surface rotation and eccentric rotation.

Fig. 3 is a three-dimensional schematic diagram of a known grinding device.

FIG. 4 is a schematic cross-sectional view of a known grinding device.

Fig. 5 is a schematic cross-sectional view of a known grinding device in use.

FIG. 6 is a schematic perspective view of a conventional set and fixture.

FIG. 7 is a schematic cross-sectional view of the first embodiment of the present invention and its enlarged structure.

Fig. 8 is a schematic perspective view of a first implementation of the first embodiment of the present invention.

Fig. 9 is a perspective view of a second implementation of the first embodiment of the present invention.

Fig. 10 is a schematic perspective view of a third implementation of the first embodiment of the present invention.

FIG. 11 is a schematic cross-sectional view of the second embodiment of the present invention and its enlarged structure.

Fig. 12 is a schematic perspective view of the first implementation of the second embodiment of the present invention.

Fig. 13 is a perspective view of a second implementation mode of the second embodiment of the present invention.

FIG. 14 is a schematic cross-sectional view of a third embodiment of the present invention.

Fig. 15 is a schematic perspective view of an implementation mode of the third embodiment of the present invention.

16A-16D are schematic cross-sectional views of various variations of the fourth embodiment of the present invention.

FIG. 17 is a schematic cross-sectional view of a fifth embodiment of the present invention.

Fig. 18 is a schematic view of the unfolded state of the fifth embodiment of the present invention.

Fig. 19 is a schematic perspective view of a sixth embodiment of the present invention.

Fig. 20 is a schematic perspective view of a seventh embodiment of the present invention.

FIG. 21 is a schematic cross-sectional view of an eighth embodiment of the present invention.

Fig. 22 and Fig. 23 are two schematic cross-sectional views of another embodiment of the fixing groove and the fixing rod of the present invention.

Fig. 24 is a schematic cross-sectional view of another embodiment of the fixing groove and the fixing rod of the present invention.

Fig. 25 is a schematic perspective view of the first known continuous grinding surface equipment.

Fig. 26 is a schematic perspective view of a second known continuous grinding surface device.

Detailed ways

Please refer to Figure 7, Figure 8, Figure 9, and Figure 10. The holders 50, 50' of the first embodiment of the present invention respectively include a fixing groove 51 recessed below the body at the center of the body to accommodate a fixing rod 52; Symmetrical accommodating grooves 53, 53', 53" are used to accommodate the weight 54. The accommodating grooves 53, 53', 53" are respectively arc-shaped, round-shaped and long-shaped. The bodies of the holders 50, 50' are respectively circular and square. The body of the tool 50 is combined with a plurality of clamps 500 . Each clamp 500 engages at least one fiber end face ferrule 55 to engage an optical fiber 56 to be polished. There is a grinding surface 57 below the ferrule 55 , and the grinding surface 57 is combined on the base 58 . The upper end of the fixing rod 52 is combined with a bracket 59 . The bottom of the fixing rod 52 has a socket portion 521 with a protruding outer diameter. The socket portion 521 and the fixing groove 51 have corresponding concave-convex surfaces, such as a corresponding polygonal design, so that there is no rotation between the fixing rod 52 and the fixing groove 51 . This is shown in the enlarged view of Figure 7. The function of the fixing rod 52 is only to fix the device 50 so that it cannot move or rotate. The fixing rod 52 does not exert downward pressure on the setting tool 50 .

The feature of this embodiment is that during the grinding process, the fixing rod 52 is only in contact with the fixing groove 51 at the sleeve portion 521, and the contact area and the contact surface between the grinding end surfaces of the plurality of optical fibers 56 and the grinding surface 57 are approximately on the same plane. . The supporting point of the setting tool 50 is on the force application surface generated by the friction between the bottom end of the optical fiber 56 and the grinding surface 57 . Instead of generating torsion force, the set tool 50 will be tilted and uneven pressure will be generated.

In addition, the weight 54 is used to apply downward pressure on the set tool 50 , so that the polished end surface of the optical fiber 56 and the polished surface 57 come into natural contact with each other. When the grinding surface 57 swings up and down, the setting tool 50 also swings up and down, so that the contact pressure between the grinding end faces of the optical fibers 56 at different positions on the setting tool 50 and the grinding surface 57 can maintain the same size, so that the same batch of operations Grinding the end face to obtain the same grinding shape to improve the speed and quality of grinding.

Please refer to Figure 11, Figure 12, and Figure 13. The fixtures 502, 502' of the second practical example of the present invention have substantially the same structure except that the main body does not have the accommodating groove 53 of the first embodiment shown in FIG. 7 . The main bodies of the holders 502, 502' are circular and square respectively. Its pressurization method is to directly pressurize the set tools 502, 502' downwards by the fixed rod 52'.

This is shown in the enlarged view of Figure 11. In order to apply pressure, but also to be able to contact naturally, the contact surface between the bottom end of the fixed rod 52' and the body of the device 502 must be an arc surface. Moreover, in order to prevent the set tool 502 from rotating, the fixed rod 52, the sleeve joint 521' protruding from the bottom and the fixed groove 503 also have a polygonal design. And the fixed rod 52 shown in Figure 7 does not need to apply pressure downwards, so it does not matter whether its bottom end is an arc. But because the fixed rod 52' will pressurize downwards except for the fixed device 502, and after the pressurization, the device 502 will also come into natural contact with the grinding surface 504, so the bottom of the fixed rod 52' must be cambered.

Please refer to Figure 14 and Figure 15. The main difference between the device 60 of the third embodiment of the present invention and the device 502 of the second embodiment shown in FIG. The accommodating groove 503 is arranged in the middle to accommodate the fixing rods 62 respectively, and the rest of the structures are substantially the same. The fixing rods 62 are combined with the brackets 63 respectively, and the upper ends thereof can be pressed down by a pressurizing tool. In this embodiment, the contact surface of the protruding sleeve joint 621 at the bottom of the fixing rod 62 and the fixing groove 61 of the set tool 60 is on the same plane as the contact surface of the bottom ends of the plurality of optical fibers 64 and the grinding surface 65, so that the support point of the set tool 60 , on the force-applying surface generated by the bottom end of the optical fiber 64 and the grinding surface 65 , there will be no torsion force to tilt the setting tool 60 , resulting in uneven pressure. Moreover, the bottom end of the optical fiber 64 is in natural contact with the grinding surface 65 to maintain the same contact pressure between the grinding end surface of the optical fiber 64 and the grinding surface 65 at different positions on the tool 60 to obtain the same grinding shape. It can achieve the effect of improving the grinding speed and quality.

Please refer to Figure 16A. The main difference between the holder 70 of the fourth embodiment of the present invention and the holder 60 of the third embodiment shown in FIG. The setting tool 70 has the force to press the end faces of the plurality of optical fibers 73 against the grinding surface 74 , so that the setting tool 70 and the grinding surface 74 are in a pressing manner of natural contact. In addition, there are a plurality of symmetrically designed contact members under the side of the main body of the device 70, such as a fixed rod 75, and the bottom of the fixed rod 75 has a protruding sleeve portion 751, which is respectively placed on the corresponding positioning member of the bracket 76, such as an accommodating slot. Within 761. The liquid during grinding can be discharged under the accommodation slot 761 . The contact member, such as the contact surface of the fixed rod 75 and the positioning member, such as the accommodating slot 761, is on the same plane as the contact surface of the bottom ends of the plurality of optical fibers 73 and the grinding surface 74, so that the supporting point of the tool 70 is on the same plane as the optical fiber 73. The force-applying surface generated by the bottom end of the bottom end and the grinding surface 74 will not generate torsion force to make the set tool 70 tilt and cause uneven pressure. This embodiment can achieve the effect of improving the grinding speed and quality.

In this embodiment, the contact member under the side of the device 70 body, such as the bottom of the fixed rod 75, may not have a protruding socket, but the corresponding positioning member of the bracket 76, such as the accommodating slot 761, has a protruding socket. 762. The bottom of the fixing rod 75 is placed in the sleeve portion 762, as shown in FIG. 16B. Or the accommodating slot 761 of the support 76 and the bottom of the fixed rod 75 do not have a protruding socket, and the bottom end of the fixed rod 75 is placed in the accommodating slot 763 of the corresponding support 76, so that the fixed rod 75 can be ground during the grinding process. It is limited by the fixing slot 763, as shown in FIG. 16C. Or the positioning member of the bracket 76 is a fixed rod 764, and the contact member of the device 70 body is an accommodating slot 765, and the accommodating slot 765 may have a protruding socket portion 766, and the fixed rod 764 is placed in the socket portion In 766, the contact member is constrained by the positioning member during grinding, as shown in FIG. 16D.

Another feature of this embodiment is that the bracket 76 can conveniently drive the set tool 70 to move to the top of another group of grinding surfaces 74, and perform grinding operations on the end faces of the optical fiber 73 on different grinding surfaces 74, so as to facilitate automatic grinding for different grinding surfaces. Operation.

Please refer to Figure 17 and Figure 18. The set 70 of the fifth embodiment of the present invention is the same as that shown in FIG. 16 . But the support 77 is frame-shaped, and one end of the shaft 78 is framed with one side of the base 79 of the grinding surface 74; The fastening unit of this embodiment includes one ends of two buckle ears 791 pivotally connected to two sides of the base 79 respectively; two sides of the bracket 77 have tenons 771 corresponding to the two buckle ears 791 . The buckle hole 792 of the buckle ear 791 can buckle the tenon 771, so that the bracket 77 is combined with the base 79, as shown in FIG. 17 .

In this embodiment, the bracket 77 and the base 79 can be quickly disassembled and snapped together, so that the grinding surface can be replaced conveniently, so that the end surface of the optical fiber 73 can be ground with different grinding surfaces.

Please refer to Figure 19. The set 80 according to the sixth embodiment of the present invention has a plurality of symmetrical accommodating grooves 81 on the top of the body, and a plurality of symmetrical fixing rods 82 on the bottom of the body. The bottom of the fixing rod 82 has a protruding socket portion 821 for being accommodated in a receiving groove 831 of a frame-shaped bracket 83 . The frame 83 has a pair of concave sides 832 , and the bottom of the accommodating groove 831 has a drain hole disposed on the concave sides 832 . The frame 83 can move above the continuous grinding surface 84, so as to perform the grinding operation of the grinding surface with different grain sizes.

Please refer to Figure 20. The mounting device 85 according to the seventh embodiment of the present invention has a plurality of symmetrical accommodating grooves 851 around its body for accommodating the fixing rod 86 . The fixing rod 86 is combined with a frame-shaped bracket 87 , and pressure can be exerted downward on the mounting device 85 from above the fixing rod 86 .

Please refer to Figure 21. The main body of the set 88 of the eighth embodiment of the present invention is combined with a plurality of clamps 881 . Each clamp 881 is combined with an obliquely disposed fiber end-face ferrule 882 for combining obliquely disposed optical fiber 883 to be polished. The optical axis of the protruding spherical surface of the optical fiber 883 after grinding is parallel to the center line of the optical fiber 883 to form a small oblique angle.

Please refer to Figure 22 and Figure 23. The present invention can also make the bottom of the fixing groove 892 of the body of the device 891 have a protruding sleeve portion 893, only allowing the fixing rod 894 to be in contact with the fixing groove 892 at the sleeve portion 893, and the sleeve portion 893 and the fixing rod 894 are corresponding The concave-convex surface, such as the corresponding polygonal design, prevents rotation between the fixing rod 894 and the fixing groove 893 .

See Figure 24 for illustration. In the present invention, the bottom of the fixing groove 896 of the frame body 895 can also have a protruding socket portion 897 , and only the fixing rod 898 is allowed to contact the fixing groove 896 at the socket portion 897 . The bottom of the fixing groove 896 has a drain hole 899 .

Those shown in Figure 25 and Figure 26 are used in conjunction with various embodiments of the present invention, and have two known continuous grinding surfaces 90, 91 with different coarse and fine particles, wherein there is a groove 901 in the middle of the grinding surface 90 for accommodating As shown in Fig. 7 and Fig. 11, there is a downward convex part in the middle of the device 50, 502. And there is no groove in the middle of the grinding surface 91, which can be used for grinding with the setting tools 60, 70 as shown in Fig. 14 and Fig. 16 .

Because the grinding process needs to use coarse-grained abrasive sand first, and then use fine-grained abrasive sand. At this time, the coarse abrasive sand must be removed. If the structure of the set is too complex or has gaps, coarse particles are likely to remain in the set and affect the grinding quality. At this time, wax, rosin or plastic materials can be used to fill up the gap of the ferrule at the grinding end of the tool to facilitate grinding.

Another factor affecting the uniformity of pressure is whether the end face of the optical fiber is evenly placed on the holder for the end face of the optical fiber. If the number of optical fibers to be polished is too small due to some factors. You can use the false ferrule to fill up. To distribute the pressure evenly, the shape of the so-called false ferrule is the same as that of the ferrule to be ground, but there may be no optical fiber in the middle. The material of the false ferrule can be metal, plastic, glass or ceramics.

The upper part of the fixed rod and the fixed groove will keep a certain distance, so as to prevent the upper part of the fixed groove from touching the fixed rod during the grinding process. Because if the two are in contact, the contact point becomes a fulcrum, which will affect the problem of uniform pressure.

During the grinding process of the jig of the present invention, the fulcrum of the jig is on the plane formed by the force-applying surface, and the pressure mode of natural contact is formed between the optical fiber end face on the jig and the grinding surface. Therefore, the contact pressure between the polished end face and the polished surface of the optical fiber at different positions on the tool can be kept at the same level, so that the polished end faces of the same batch of operations can obtain the same polished shape. Therefore, more optical sticks to be polished can be combined to perform grinding at the same time, and compared with the generally known tools, the speed and quality of optical stick grinding can be significantly improved.

The above descriptions are only examples utilizing the technical content of the present invention. Any modifications and changes made by those skilled in the art using the present invention all belong to the patent scope claimed by the present invention, and are not limited to those disclosed in the examples.

Claims (18)

1. A kind of optical fiber end face grinding device is used to combine the optical fiber to be polished, it is characterized in that, comprises a body to have fixed groove; Above-mentioned fixed groove accommodates fixed rod; Above-mentioned fixed rod upper end is combined with support; Above-mentioned body is combined with multiple The optical fiber clamp is used to combine the optical fiber to be polished; the bottom of one of the above-mentioned fixing rod and the above-mentioned fixing groove has a protruding sleeve part, so that the above-mentioned fixing rod and the above-mentioned fixing groove are not separated from each other except at the above-mentioned sleeve part. Contact; the above-mentioned fixing groove is recessed below the above-mentioned body, so that the contact area between the above-mentioned sleeve part and the above-mentioned fixing groove is less than 20 cm from the upper and lower sides of the contact surface between the grinding end surface of the above-mentioned optical fiber and the grinding surface; wherein The above-mentioned fixed rod is stressed and presses down on the above-mentioned body. 2. The optical fiber end face grinding device according to claim 1, wherein the above-mentioned fixing groove is arranged at the center of the above-mentioned body, and the periphery of the above-mentioned socket part and the above-mentioned fixing groove have shapes corresponding to the concave-convex surface, so as to The rotation between the above-mentioned fixed rod and the above-mentioned fixed groove will not occur. 3 . The optical fiber end face grinding device according to claim 1 , wherein a plurality of symmetrical fixing grooves are formed on the periphery of the body. 4 . 4. An optical fiber end face grinding device is used to combine the optical fiber to be polished, and is characterized in that it includes a body with a fixing groove; the fixing groove accommodates a fixing rod; the upper end of the fixing rod is combined with a bracket; the body is combined with a plurality of The optical fiber clamp is used to combine the optical fiber to be polished; the bottom of one of the above-mentioned fixing rod and the above-mentioned fixing groove has a protruding sleeve part, so that the above-mentioned fixing rod and the above-mentioned fixing groove are not separated from each other except at the above-mentioned sleeve part. Contact; the above-mentioned fixing groove is recessed below the above-mentioned body, so that the contact area between the above-mentioned socket part and the above-mentioned fixing groove is less than 20 cm from the upper and lower sides of the contact surface between the polished end surface of the above-mentioned optical fiber and the polished surface; wherein the above-mentioned The fixing groove is arranged at the center of the above-mentioned body, and the periphery of the above-mentioned sleeve part and the above-mentioned fixing groove have shapes corresponding to the concave-convex surface, so that there will be no rotation between the fixing rod and the above-mentioned fixing groove; wherein the side of the above-mentioned body near the periphery It has a plurality of symmetrical accommodation grooves for accommodating weights. 5 . The optical fiber end face grinding device according to claim 2 , wherein the contact surface between the bottom end of the fixing rod and the body is an arc surface. 6 . 6. The optical fiber end face grinding device according to claim 2, wherein the shape of the body is selected from one of a circle and a square. 7 . The optical fiber end face grinding device according to claim 4 , wherein the shape of the accommodating groove is selected from one of an arc groove shape, a cylindrical shape and a long groove shape. 8 . 8. An optical fiber end face grinding device, which is used to combine the optical fiber to be polished, is characterized in that it includes a body combined with multiple optical fiber clamps to combine the optical fiber to be polished; the side of the above-mentioned body has a plurality of symmetrically designed Contact member; a plurality of symmetrical brackets respectively have positioning members corresponding to the above-mentioned contact members; the above-mentioned multiple contact members and the above-mentioned multiple positioning members are respectively one of the corresponding fixing rods and accommodating slots, and the above-mentioned multiple fixing The rods are respectively placed in the above-mentioned corresponding accommodating slots, so that the above-mentioned multiple contact members are restricted by the above-mentioned corresponding positioning members during the grinding process; the contact area between the above-mentioned multiple contact members and the above-mentioned corresponding positioning members, the distance The upper and lower sides of the contact surface between the polished end surface of the optical fiber and the polished surface are less than 20 cm; wherein the above-mentioned fixing rod is forced to press down on the above-mentioned body. 9. The optical fiber end face grinding tool according to claim 1 or 8, wherein the above-mentioned clamp is combined with a ferrule arranged obliquely to connect the optical fiber to be polished arranged obliquely. 10. The optical fiber end face grinding device according to claim 1 or 8, wherein the above-mentioned clamp is combined with ferrules, and the gaps between the above-mentioned multiple ferrules are made of at least one material selected from wax, rosin and plastic materials. One that fills the above-mentioned multiple voids. 11. The optical fiber end face grinding device according to claim 1 or 8, wherein the clamp is combined with a ferrule, and the plurality of ferrules include at least one dummy ferrule. 12. The optical fiber end face grinding device according to claim 1 or 8, wherein the contact area between the above-mentioned sleeve part and the above-mentioned fixing groove is at a distance from the upper and lower sides of the contact surface between the grinding end face of the above-mentioned optical fiber and the above-mentioned grinding surface Less than 10 cm. 13. An optical fiber end face grinding device, which is used to combine the optical fiber to be polished, is characterized in that it includes a body combined with multiple optical fiber clamps to combine the optical fiber to be polished; the side of the body has a plurality of symmetrically designed Contact member; a plurality of symmetrical brackets respectively have positioning members corresponding to the above-mentioned contact members; the above-mentioned multiple contact members and the above-mentioned multiple positioning members are respectively one of the corresponding fixing rods and accommodating slots, and the above-mentioned multiple fixing The rods are respectively placed in the above-mentioned corresponding accommodating slots, so that the above-mentioned multiple contact members are restricted by the above-mentioned corresponding positioning members during the grinding process; the contact area between the above-mentioned multiple contact members and the above-mentioned corresponding positioning members, the distance The upper and lower sides of the contact surface between the polished end surface of the optical fiber and the polished surface are less than 20 cm; wherein the periphery of the above-mentioned body has a plurality of symmetrical accommodation grooves for accommodating weights. 14. The optical fiber end face grinding device according to claim 8, wherein one of the bottoms of the plurality of fixing rods and the corresponding fixing slots has a protruding socket. 15. The optical fiber end face grinding device according to claim 11, wherein the material of the dummy ferrule is selected from one of metal, plastic, glass and ceramics. 16 . The optical fiber end face grinding device according to claim 13 , wherein the bracket is frame-shaped and has a pair of concave sides, and the receiving groove is disposed on the concave sides. 17 . 17. The optical fiber end face grinding tool as claimed in claim 13, wherein the above-mentioned support is frame-shaped, and one end thereof is framed with one side of the base of the above-mentioned grinding surface; The detachable fastening unit is fastened with the above-mentioned base. 18. The optical fiber end face grinding tool according to claim 17, wherein the above-mentioned fastening unit includes one end of two buckle ears pivotally connected to the two sides of the above-mentioned base respectively; The tenons corresponding to the two buckle ears, and the buttonholes of the above-mentioned buckle ears can buckle the above-mentioned tenon, so that the above-mentioned bracket is combined with the above-mentioned base.

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