KR101630194B1 - Portable apparatus of grinding optical connector using grinding wheel - Google Patents

Abstract

A portable optical connector polishing apparatus using a grinding wheel having a low connection loss comparable to hand polishing, polishing by one process, and easy to carry. The apparatus includes a polishing jig for polishing an optical fiber and a jig cradle on which the polishing jig is mounted, the polishing jig including a polishing lower jig coupled with the jig cradle, a path coupled to the polishing lower cradle for moving the optical fiber insertion jig in a diagonal direction, And a polishing auxiliary jig mounted on the polishing guide jig and mounted with an optical fiber inserting jig to be inserted into the path, wherein the optical fiber inserting jig is mounted on the polishing supporting jig, the path and the polishing lower surface, The optical fiber is brought into contact with the grinding wheel.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a grinding wheel,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing apparatus for a portable optical connector, and more particularly to a polishing apparatus using a grinding wheel such as a diamond wheel to polish an end of an optical connector of a plastic optical fiber (POF) will be.

Plastic optical fibers are widely used for in-vehicle data networks such as MOST (Media Oriented System Transport), transmission / reception systems for industrial equipment control signals, military industries, and medical devices. A POF cutter, a hand polishing machine, and a polishing machine are mainly used as a method of treating the end of such a plastic optical fiber. The POF cutter has the lowest number of processes but high connection loss. Hand polishing equipment has a relatively low connection loss and is easy to carry compared to a polishing machine, but requires a relatively long process time. That is, it is troublesome to perform the polishing process in a sequential three-stage to four-stage polishing process. The polishing machine has the ideal longitudinal profile and the lowest connection loss, but it is difficult to polish in the field and is not portable.

Korean Patent Publication No. 2004-0030437 discloses a fine polishing method using a porous compressed sponge-like material free from fixed abrasive particles and another kind of slurry containing abrasive particles of relatively small size. The patent can obtain a degree of illuminance of the desired vertical section, and the connection loss is small. However, the above-mentioned patent has a disadvantage that it is difficult to polish in the field and can not be carried. On the other hand, a portable optical connector polishing apparatus is polished by one process and should be simple. However, the above-mentioned requirements are difficult to meet with the conventional polishing apparatus.

SUMMARY OF THE INVENTION An object of the present invention is to provide a portable optical connector polishing apparatus using a grinding wheel having a low connection loss similar to hand polishing, polishing in one process, and easy to carry.

A portable optical connector polishing apparatus for solving the problems of the present invention includes a polishing jig for polishing an optical fiber and a jig base on which the polishing jig is mounted. The polishing jig includes a polishing lower jig coupled to the jig base, an abrasive guide jig coupled to the abrasive bottom jig and having a path for moving the optical fiber insertion jig in a diagonal direction, and a polishing guide jig mounted on the polishing guide jig, And a polishing auxiliary jig to which the optical fiber insertion jig is inserted. The optical fiber inserting jig penetrates the polishing assistant jig, the path, and the abrasive bottom surface to bring the optical fiber into contact with the grinding wheel mounted on the jig rest.

In the polishing apparatus of the present invention, a pressure adjusting spring for adjusting a pressure generated during the polishing process may be mounted on the polishing lower surface. The optical fiber insertion jig may have a wing for fixing between the lower polishing jig and the polishing guide jig. The abrasive guide jig can form a path through which the optical fiber inserting jig moves by a distance between the pair of segments.

In a preferred embodiment of the present invention, the grinding wheel is coupled to the motor connection portion, and the motor connection portion can be engaged with the motor shaft of the motor. The grinding wheel may include an abrasive layer coated with abrasive grains. The motor is connected to a power supply for supplying power to the motor, and the power supply can be charged.

According to the portable optical connector polishing apparatus using the grinding wheel of the present invention, the optical fiber can be polished into one process with a low connection loss comparable to hand polishing by utilizing a polishing jig that polishes the end of the optical fiber by the grinding wheel . Further, the apparatus of the present invention can be easily carried by reducing the size by utilizing a power source capable of charging.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing an assembled state of a portable optical connector polishing apparatus using a grinding wheel according to the present invention; FIG.
2 is a perspective view illustrating the power control unit of FIG.
3 is an exploded perspective view for explaining a polishing part according to the present invention.
FIG. 4A is a perspective view of the polishing jig according to the present invention, and FIG. 4B is a perspective view of the polishing jig viewed from the bottom.
5 to 8 are perspective views illustrating components constituting the polishing jig according to the present invention.
9 is a perspective view showing a grinding wheel according to the present invention and a motor connecting portion mounted on the grinding wheel.
10 is a perspective view showing a jig cradle according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. The embodiments of the present invention are provided to enable those skilled in the art to more fully understand the present invention.

The embodiment of the present invention suggests an optical connector polishing apparatus which has a low connection loss similar to hand polishing, polishes by a single process, and is easy to carry, by utilizing a polishing jig that polishes the end of an optical fiber by a grinding wheel. To this end, the structure of the polishing apparatus of the present invention will be described in detail, and the components constituting each part will be described in detail. The polishing apparatus of the present invention has an advantage that it can be carried. That is, the structure of the polishing apparatus is simplified, and the size of the polishing apparatus is reduced, so that the apparatus can be carried. If the polishing apparatus is carried, the optical fiber can be directly polished in the field, so that the efficiency of the work can be increased. On the other hand, since the optical fiber is polished and applied to an optical connector, the polishing apparatus of the present invention may be referred to as an optical connector polishing apparatus.

1 is a cross-sectional view showing an assembled state of a portable optical connector polishing apparatus using a grinding wheel according to an embodiment of the present invention. 2 is a perspective view showing the power control unit 14 of FIG.

1 and 2, a polishing apparatus according to the present invention includes a polishing section 100, a case 10, a power source section 12, a power source control section 14, a motor control section 16, a motor 18, ). The components are embedded in the case 10 except that a part of the polishing section 100 and the power supply control section 14 are exposed to the outside of the case 10. [ The support 20 includes a side wall 20a for mounting the polishing part 100 and a bottom plate 20b fixed to the bottom. A part of the power source control part 14, a motor control part 16 and a motor 18 are located on the side of the side wall 20a of the support frame. The motor 18 is directly connected to the polishing part 100 to allow the polishing part 100 to polish the optical fiber. The bottom plate 20b is coupled to the entire lower portion of the case 10.

The power supply control unit 14 includes a charging terminal input unit 14a, a charging ON / OFF unit 14b, a power ON / OFF unit 14c, and a motor speed control unit 14d. In some cases, the power supply control unit 14 may add other functions in addition to the above functions. Although not shown in detail in the drawing, the terminals of the power supply control unit 14 are connected to the power supply unit 12 and the motor control unit 16. [ The motor control unit 16 is provided with various components including a printed circuit board so as to control the operation of the motor 18. [ The operation of the motor 18 refers to the rotational speed, the rotational force, and the ON / OFF of the motor 18. The user can set the operation of the motor 18 through a separate monitor.

3 is an exploded perspective view for explaining a polishing unit 100 according to an embodiment of the present invention.

3, the polishing unit 100 is divided into a polishing jig 30 of the present invention and a jig base 40 to which the polishing jig 30 is fixed. A plastic optical fiber (POF) is inserted into the polishing jig 30 to polish its end. The respective components of the polishing jig 30 and the method of treating the end of the optical fiber will be described later in detail with reference to FIGS. 4 to 9. FIG. The jig cradle 40 is coupled to the side wall 20a of the support of Fig. The jig cradle 40 will be described later with reference to FIG. The polishing jig 30 is relatively small in size because the polishing jig 30 is large enough to allow the user to grasp it by hand.

FIG. 4A is a perspective view of the polishing jig 30 according to the embodiment of the present invention, and FIG. 4B is a perspective view of the polishing jig 30 seen from the bottom.

4A and 4B, the polishing jig 30 includes a polishing lower jig 31, a polishing guide jig 32, a polishing assist jig 33, and an optical fiber insertion jig 34. The polishing lower jig 31 is fixed to the jig rest 40 in Fig. 3 and the polishing guide jig 32 is mounted between the polishing lower jig 31 and the polishing assist jig 33. And a pair of polishing guide jigs 32. The optical fiber insertion jig 34 receives the optical fiber and is mounted so as to pass through the polishing auxiliary jig 33 and the polishing lower jig 31. The optical fiber inserting jig 34 is fixed to the polishing lower jig 31. When the optical fiber is inserted into the optical fiber insertion jig 34, the end of the optical fiber is brought into contact with the grinding wheel (see 60 in Fig. 9). The polishing lower jig 31 is equipped with a pressure adjusting spring 31f for adjusting the pressure applied when polishing.

5 to 8 are perspective views for explaining components constituting the polishing jig 30 according to the embodiment of the present invention. At this time, the polishing jig 30 will be described with reference to Figs. 4A and 4B.

5, the polishing lower jig 31 includes a polishing lower jig body 31a, a polishing lower jig coupling portion 31b, a spring insertion groove 31c, an optical fiber insertion jig 31c, A mounting hole 31d, a polishing guide jig fitting hole 31e, and a pressure adjusting spring 31f. The polishing lower jig coupling portion 31b is located on both sides of the lower polishing jig 31 and the spring insertion groove 31c is formed in the coupling portion 31b. The optical fiber insertion jig mounting hole 31d penetrates near the center of the lower polishing jig 31 and the polishing guide jig fitting hole 31e is located between the fitting portion 31b and the mounting hole 31d.

The polishing lower jig coupling portion 31b is in the form of a protruded and extended leg, and the portion where the optical fiber insertion jig mounting hole 31d is located has a depressed shape. That is, in the polishing lower jig body 31a, the vicinity of the mounting hole 31d is thinner than the vicinity thereof. Substantially, the vicinity of the center of the bottom of the polishing lower jig body 31a is made thinner in order to fix the optical fiber insertion jig 34 (34c in Fig. 8). Accordingly, it is preferable that the depth of the depressed portion coincides with the thickness of the optical fiber insertion jig blade 34c. Alternatively, the polishing lower jig 31 may be provided with a pressure adjusting spring 31f to control the pressure generated during the polishing of the optical fiber. The pressure regulating spring 31f can be any elastic body, and other types of elastic bodies other than the illustrated spring can be applied.

6, the polishing guide jig 32 is composed of a pair of guide segments 32a and 32b, and the segment pieces 32a and 32b are provided with a guide jig coupling hole 31e for coupling to the polishing lower jig hole 31e, (32c). Preferably, each of the slices 32a, 32b is fastened to the polishing lower jig engaging hole 31e by screwing. The polishing guide jig 32 provides a path 32d through which the polishing assist jig 33 moves. Meanwhile, the polishing auxiliary jig 33 moves in an oblique direction together with the optical fiber. When the optical fiber is moved in the diagonal direction, the longitudinal section of the optical fiber is polished so as to have a sloped surface. The reason for polishing the longitudinal section of the optical fiber obliquely is that the length of the grinding wheel differs from that of the optical fiber so that the optical fiber is polished uniformly.

In order to move the polishing auxiliary jig 33 in the oblique direction, the width of one side of each of the slices 32a and 32b is wider than the width of the other side, and the narrower portion is opposed to the wide portion. For this purpose, each of the slices 32a and 32b extends at one side while forming a predetermined angle?. The optical fiber insertion jig 34 reciprocates in the path 32d. For this purpose, it is preferable that the path 32d forms a constant distance L. It is sufficient that the interval L accommodates the optical fiber insertion jig 34 and that the optical fiber insertion jig 34 is not shaken during the reciprocating movement. The angle? And the interval L formed by the respective sections 32a and 32b can be set in consideration of the kind of the optical fiber to which the present invention is applied, characteristics of the polishing operation, and the like.

7, the polishing auxiliary jig 33 includes a polishing auxiliary jig body 33a, a polishing auxiliary jig knob 33b, an optical fiber insertion jig insertion hole 33c, and an optical fiber insertion jig fixing hole 33d. The polishing assist jig knob 33b is for grinding the optical fiber by the user holding the knob 33b and reciprocating along the path 32d of the polishing guide jig 32. [ The optical fiber insertion jig 34 is inserted into the optical fiber insertion jig insertion hole 33c and the optical fiber insertion jig 34 is fixed by using the optical fiber insertion jig fixing hole 33d. At this time, the optical fiber inserting jig 24 may be fixed with a tongue bolt or the like inserted into the fixing hole 33d. The polishing assistant jig handle 33b has such a size that it can be held by the user and can be easily handled.

8, the optical fiber insertion jig 34 includes an optical fiber insertion jig body 34a, an optical fiber insertion hole 34b, and an optical fiber insertion jig blade 34c. The optical fiber insertion jig body 34a passes through the path 32d of the polishing guide jig 32 and extends to the optical fiber insertion jig mounting hole 31d of the polishing lower jig 31. [ The optical fiber insertion jig blade 34c is mounted between the polishing lower jig 31 and the polishing guide jig 32. [ That is, the blade 34c is fixed between the polishing lower jig 31 and the polishing guide jig 32. [ The optical fiber inserted into the optical fiber insertion hole 34b passes through the insertion hole 34b and is brought into contact with the grinding wheel 60 (Fig. 9) described later.

9 is a perspective view showing a grinding wheel 60 according to an embodiment of the present invention and a motor connecting portion 50 mounted on the grinding wheel. At this time, the motor will refer to the reference numeral 18 in Fig.

9, the motor connection portion 50 includes a grinding wheel insertion hole 51 into which a grinding wheel is inserted, a grinding wheel fixing hole 52 that fixes the grinding wheel, a motor shaft insertion hole into which the shaft of the motor 18 is inserted, (53) and a motor shaft fixing hole (54) for fixing the motor shaft. When the motor shaft is inserted into the motor connecting portion 50, the motor connecting portion 50 is rotated by the rotation of the motor 18. That is, the rotational force of the motor connecting portion 50 is obtained by the motor 18. The grinding wheel and the motor shaft fixed by the grinding wheel fixing hole 52 and the motor shaft fixing hole 54 are not limited to this, but they can be fixed with a tongue bolt.

The polishing wheel 60 is composed of a polishing wheel body 60a and an abrasive layer 60b formed at an end of the body 60a. The polishing layer 60b contains abrasive grains such as diamond grains. When the grinding wheel body 60a is fixed to the grinding wheel insert hole 51, the grinding wheel 60 is rotated by the rotational force of the motor 18. [ When the optical fiber is brought into contact with the grinding wheel 60 in a rotating state, the end of the optical fiber is polished. When the user grasps the abrasive assist jig grip 33b and polishes along the path 32d of the polishing guide jig in a state where the optical fiber is in contact with the abrasive layer 60b, the end of the optical fiber is polished obliquely. The grinding of the optical fiber by the grinding apparatus of the present invention is performed by one step. This is different from the conventional hand polishing apparatuses that are polished in three to four steps.

10 is a perspective view for explaining a jig cradle 40 according to an embodiment of the present invention.

10, the jig cradle 40 includes a polishing jig pedestal 41, a pressure adjusting spring insertion groove 42, a motor insertion hole 43, and a cradle fixing plate 45. As shown in Fig. The polishing jig pedestal 41 is coupled to the cradle fixing plate 45 by the first coupling part 44 and the cradle fixing plate 45 is fixed to the side wall 20a of the supporting base by the second coupling part 46 . In the drawing, the polishing jig pedestal 41 is shown in a state in which half of the cylinder is removed, but it may be a shape in which a rectangular parallelepiped body is cut, not a cylinder in some cases. The pressure adjusting spring 31f described in the polishing lower jig 31 is inserted into the pressure adjusting spring insertion groove 42. [ The inserted spring 31f can adjust the pressure applied during the polishing operation.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications may be made without departing from the scope of the present invention. It is possible.

10; Case 12; Power supply
14; A power control unit 16; Motor control section
18; Motor 20; support fixture
20a; Support base side wall 20b; Support base plate
30; Polishing jig 31; Abrasive bottom jig
31a; A polishing lower jig body 31b; The lower polishing jig
31c; Spring insertion grooves 31d; Optical fiber insertion jig mounting hole
31e; A polishing lower jig engaging hole 31f; Pressure regulating spring
32; Polishing guide jigs 32a and 32b; Guide section
32c; Guide jig engaging hole 32d; Guide path
33; A polishing auxiliary jig 33a; Abrasive Auxiliary Jig Body
33b; A polishing auxiliary jig handle 33c; Optical fiber insertion jig insertion hole
33d; An optical fiber insertion jig fixing hole 34; Optical fiber insertion jig
34a; An optical fiber insertion jig body 34b; Optical fiber insertion hole
34c; Optical fiber insertion jig blade 50; Motor connection
51; Abrasive wheel insert hole 52; Grinding wheel fixing hole
53; Motor shaft insertion hole 54; Motor shaft fixing hole
60; Polishing wheel 100; Abrasive portion

Claims (7)

A polishing jig for polishing the optical fiber, and a jig base on which the polishing jig is mounted,
In the polishing jig,
A polishing lower jig coupled with the jig cradle;
An abrasive guide jig coupled to the abrasive undergarment and having a path for moving the optical fiber insertion jig in a diagonal direction; And
And a polishing auxiliary jig mounted on the polishing guide jig and on which the optical fiber insertion jig to be inserted into the path is mounted,
Wherein the optical fiber inserting jig penetrates the polishing auxiliary jig, the path, and the polishing lower surface to bring the optical fiber into contact with a grinding wheel mounted on the jig rest,
The polishing guide jig has a pair of slits spaced apart by a distance L to form a path through which the optical fiber insertion jig moves, the slice having a width larger than the width of the other side, and the narrower width Wherein the grinding wheel and the grinding wheel are arranged to face each other. The apparatus of claim 1, wherein a pressure adjusting spring for adjusting a pressure generated during the grinding process is mounted on the grinding lower surface. The apparatus of claim 1, wherein the optical fiber insertion jig has a blade for fixing between the lower polishing jig and the polishing guide jig. delete The apparatus of claim 1, wherein the grinding wheel is coupled to a motor connection part, and the motor connection part is coupled to a motor shaft of the motor. The apparatus of claim 1, wherein the grinding wheel includes an abrasive layer coated with abrasive grains. 6. The portable optical connector polishing apparatus according to claim 5, wherein the motor is connected to a power supply unit for supplying power to the motor, and the power supply unit is chargeable.

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