KR20150007421A - grinding apparatus of optical fiver - Google Patents

Abstract

The present invention relates to a grinding apparatus for an optical fiber, which comprises: a grinding table which is installed in a main body unit with a control panel unit, and rotates and revolves; a driving unit which is installed in the main body unit in order to rotate and revolve the grinding table; a grinding pad which adheres to the grinding table; a grinding jig unit which is positioned on the top surface of the grinding pad in order to support multiple ferrules supported by optical fibers; and a welding force regulating unit which is installed in a support member installed in the main body unit in order to support so that the grinding jig unit cannot rotate, and adjusts welding force in order to pressurize the ferrules, supported by the grinding jig unit, to the grinding pad. Therefore, the grinding apparatus for an optical fiber can simultaneously grind multiple ferrules supported by optical fibers at a fixed angle.

Description

[0001] The present invention relates to a grinding apparatus for optical fiver,

The present invention relates to an optical fiber grinding apparatus, and more particularly, to an optical fiber grinding apparatus which can polish a plurality of ferrules supported by optical fibers at the same time and can easily adjust the polishing angle of an optical fiber.

2. Description of the Related Art In general, optical fibers used in optical communication, medical equipment, optical equipment, etc., use optical connectors for their connection. The optical fiber connected by the optical connector is fixed with an adhesive through the center hole of the ferrule, and then the end face is finished by polishing the end face for each ferrule.

The connection cross-section polishing order of such an optical connector is finished in a mirror-finished state after the polishing step of several steps from the abrasive film of rough abrasive to the abrasive film of fine abrasive grains. In each polishing step, it is necessary to set various kinds of processing conditions such as the type of the used polishing film, the selection of the polishing liquid, and the polishing time.

In the connecting end face of the optical connector, there are provided a right angle flat polishing having a rectangular cross section perpendicular to the axis of the optical fiber, a right angle spherical polishing having a right angle section having a spherical surface, a sloping cross section inclined with respect to an orthogonal plane orthogonal to the axis of the optical fiber There are four types of planar inclined plane grinding and inclined spherical surface polishing in which the inclined cross section is spherical, and the processing conditions of the grinding process are different depending on these types. In addition, the processing conditions of the polishing process are different depending on the shape and material of the ferrule.

An optical fiber end face polishing machine capable of polishing a plurality of such optical connectors at the same time has been proposed. However, such a conventional optical fiber polishing machine has a great advantage that a plurality of optical connectors can be collected and polished at one time. However, since the operator has to set the processing conditions for each polishing step, various knowledge and skill are required for the operator, The movement is very inconvenient because the grinding machine is large and heavy, and the skill to operate the grinding machine is required.

Korean Patent Laid-Open Publication No. 1987-7000454 discloses a polishing bar for a ferrule of an optical connector and a ferrule polishing method thereof. The disclosed polishing pad has at least a low elastic body layer and a polishing pad having an abrasive layer integrally laminated on the surface of the low elastic body layer.

Open No. 2003-0074913 discloses an apparatus and method for polishing a lens surface of an optical fiber lens. The disclosed polishing apparatus comprises a fixing device for fixing one side of an optical fiber, and a polishing device which is coated with a fiber having a material having a higher hardness than that of glass, the surface of which is circularly vibrated up and down along the central axis of the optical fiber.

In addition, Japanese Patent Laid-Open No. 2003-0015867 discloses an optical fiber end face polishing machine. The above-mentioned grinding machines have relatively various functions and are complicated in structure.

Meanwhile, a table on which a polishing pad is installed rotates and revolves around a curved surface of a conventional soft magnetic device. In order to realize such a table that rotates and revolves, the structure is relatively complex and the production cost rises. Particularly, the table of the conventional polishing machine has a problem that the vibration is relatively large because the rotation and the revolving are formed by using the eccentric cam, and the reliability of the polishing of the optical fiber can not be improved.

An object of the present invention is to provide an optical fiber polishing apparatus which is simple in structure and can be miniaturized, and can easily adjust the polishing angle during polishing of the optical fiber.

An object of the present invention is to provide an optical fiber polishing apparatus capable of improving the reliability for driving the drive table for polishing and driving at the time of polishing according to the present invention and easily adjusting the pressure of the polishing jig unit for supporting a plurality of ferrules.

It is still another object of the present invention to provide an optical fiber polishing apparatus which can be easily used regardless of the degree of abrasion of the optical fiber, and can improve the adhesion between the end portion of the optical fiber and the polishing pad, thereby preventing uneven wear of the optical fiber.

According to an aspect of the present invention, there is provided an optical fiber polishing apparatus comprising:

A polishing table provided on a main body portion having an operation panel portion,

A drive unit installed in the main body for rotating and revolving the polishing table,

A polishing pad adhered to the polishing table;

A polishing jig unit positioned on the upper surface of the polishing pad and supporting a plurality of ferrules supported by the optical fiber;

And a pressure adjusting unit installed on the support member provided on the main body to support the polishing jig unit so as not to rotate and to adjust the pressing force for pressing the ferrules supported on the polishing jig unit to the polishing pad.

In the present invention, the driving unit for rotating and revolving the polishing table may include a ring gear having a first gear portion on an inner circumferential surface provided on the main body portion, a housing rotatably rotated by the driving bolt provided on the main body portion, A plurality of planetary gears installed at predetermined intervals on the first planetary gears so as to be rotatable with respect to the first planetary gears and meshing with the center of the housing, As shown in Fig.

The polishing jig unit comprises a disk and a fixing block formed on the outer circumferential surface of the disk at regular intervals in the ferrule holding groove and capable of pressing a ferrule supported on the ferrule holding groove on the outer circumferential surface of the disk, Lt; / RTI >

A pressing member is provided at the center of the upper surface of the disk and formed in the supporting groove at a position spaced apart from the pressing groove by a predetermined distance.

Alternatively, the polishing jig unit may include a fixing block having a pressing groove for pressing and a holding groove for preventing rotation from being formed on an upper surface thereof and having a plurality of supporting surfaces on an outer circumferential surface thereof,

A movable block rotatably installed on the support surface of the fixed block and having a ferrule fixing part for supporting the ferrule; and an angle adjusting unit for adjusting the angle of the movable block with respect to the fixed block.

The pressure regulating unit includes a weight member which is provided in the main body and is threadably engaged with a weight supporting member rotatably mounted on a horizontal supporting portion of a support member, and a weight member which is slidably mounted on the polishing table side, A rotation preventing shaft which is installed adjacent to the pressing shaft and is lifted and raised like a pressing shaft and coupled with the supporting groove to prevent rotation of the polishing jig unit, And a control pin screwed to the weight supporting member corresponding to the end of the pressure applying shaft and applying a load of the weight supporting member to the upper end side of the pressing shaft.

The optical fiber polishing apparatus according to the present invention is characterized in that a ferrule having a plurality of optical fibers mounted thereon is mounted on a plane perpendicular to the axis of the optical fiber at right angles to a plane perpendicular to the axis of the optical fiber and to a plane perpendicular to the axis of the optical fiber, It is possible to improve the productivity due to the polishing of the optical fiber, and the rotation and the process of the polishing table can be accurately performed, thereby improving the reliability of the polishing.

1 is a perspective view of an optical fiber polishing apparatus according to the present invention,
FIG. 2 is a side view of the optical fiber softening device shown in FIG. 1,
FIG. 3 is an exploded perspective view of the driving unit shown in FIG. 1,
4 is a perspective view of the first polishing jig unit,
Fig. 5 is a plan view of the first polishing jig unit shown in Fig. 4,
6 is a perspective view of the second polishing jig unit,
7 is a sectional view of the second polishing jig unit,
8 is a perspective view showing a state of being polished by the first polishing jig unit,
9 is a perspective view showing a state of being polished by the second polishing jig unit;

The optical fiber polishing apparatus according to the present invention is for polishing a ferrule supporting an optical fiber by rotating and revolving the polishing table, one embodiment of which is shown in Figs.

An optical fiber polishing apparatus 10 according to the present invention includes a polishing table 15 mounted on a main body 12 having an operation panel 11 and rotated and processed, And a drive unit (20) installed to rotate and revolve the polishing table (15). A polishing pad 16 is provided on the upper surface of the polishing table 15, and the polishing pad 16 is formed in a sheet form. The upper surface of the polishing table 15 may be provided with a resin or rubber pad having elasticity, and the close contact with the polishing pad 16 may be adhered using the viscosity of the fluid.

The optical fiber polishing apparatus 10 includes first and second polishing jig units 30 and 40 disposed on the upper surface of the polishing pad 16 and supporting a plurality of ferrules 100 supported by optical fibers, The first and second polishing jig units 30 and 40 are mounted on a support member 60 provided on the first and second polishing jig units 30 and 40 so that the first and second polishing jig units 30 and 40 are not rotated, 100) to the polishing pad (16).

The optical fiber polishing apparatus according to the present invention configured as described above will be described in more detail as follows.

The driving unit 20 installed in the main body 11 of the present invention for rotating and polishing the polishing table 15 is installed in the main body 12 or the driving motor 23 as shown in FIG. A ring gear 22 formed with a first gear portion 21 and a housing 24 rotated by a drive motor 23 mounted on the main body portion 12. The planetary gears 26, 27 and 28 are rotatably installed in the housing 24 at regular intervals of 120 degrees. A part of the planetary gears 26-28 protrudes from the outer peripheral surface of the housing 24 and engages with the first gear portion 21 of the ring gear 22. [ A rotary shaft 29 coupled to the polishing table 15 is rotatably installed in the housing 24 and a drive gear 29a is provided on the rotary shaft 29 to engage with a single oil well 26 . The drive motor 23 preferably uses a geared motor provided with a reduction gear to increase the deceleration and drive torque. The rotary shaft 29 is rotatably installed at a position eccentric to the center of the housing 24. The planetary gears 26-28 rotate with the first gear portion 21 when the housing 24 rotates inside the ring gear 22 because the housing 20 is rotated. The housing 24 rotates the polishing table 15 and the rotary shaft 29 rotated by the drive gear 29a meshed with the oil well gear 26 rotates the polishing table 15.

The first or second polishing jig unit 30 or 40 is located on the upper surface of the polishing pad 16 provided on the polishing table 15 and is capable of holding a plurality of ferrules 100 supported by optical fibers , And one embodiment is shown in Figs. 4 and 5.

Referring to the drawing, the first polishing jig unit 30 is provided with a disk 31 and is formed in the ferrule holding groove 32 at regular intervals on the outer peripheral surface of the disk 31. A fixing block 33 capable of pressing the ferrule 100 supported by the ferrule holding groove 32 is coupled to the outer peripheral surface of the circular plate 31 by a fixing bolt 34. The ferrule holding groove 32 is formed in a V (V) shape. The inner circumferential surface of the fixing block 33 which is in close contact with the outer circumferential surface of the circular plate 31 is formed of a plurality of inclined surfaces in order to increase the adhesion with the circular plate 31. In the inner circumferential surface, A plurality of guide pins 35 are provided. A pressing member 36 having a pressing groove 36a formed at the center of the upper surface of the circular plate 31 and a supporting groove 36b formed at a position spaced apart from the pressing groove 36a is provided on the upper surface of the circular plate 31.

6 and 7 show the second polishing jig unit 40 according to the present invention.

Referring to the drawings, a pressing groove 41a for pressing and a holding groove 41b for preventing rotation are formed on the upper surface of the second polishing jig unit 40, and a plurality of supporting surfaces 41c are formed on the outer peripheral surface, A movable block 42 rotatably mounted on a supporting surface of the supporting surface 41c of the fixed frame 41 and a movable block 42 fixed to the fixed frame 41, 42 for adjusting the angle (the polishing angle)

The movable block 42 is installed on the support surface 41 so as to be vertically rotatable by a hinge pin. When the movable block 42 maintains the horizontal state, the lower surface of the fixed frame 41 and the movable block 42 42 can be positioned on the same line. The movable block 42 is provided with a ferrule fixing portion 43 for holding the ferrule 100. The ferrule fixing portion 43 is provided with a ferrule holding groove 43a on the end side of the movable block 42, And a ferrule fixing block 43c is provided at an end of the movable block 42 to be coupled to the movable block 42 by a fixing bolt 43b. The ferrule fixing portion 43 is not limited to the above-described embodiment, but may be a structure capable of vertically supporting the ferrule 100 supporting the optical fiber.

The angle adjusting unit 45 is for adjusting the angle of the movable block 42 with respect to the fragile fixing frame 41, that is, the polishing angle of the ferrule 100 supported by the optical fiber, An adjustment shaft 46 rotatably mounted on a first support member 45b coupled to the first bracket 45a provided on the movable block 42 by a hinge pin and having a screw on the outer periphery thereof, And a second support member 45d which is rotatably installed on the second bracket 45c installed on the hinge pin and is screwed with the adjustment shaft 46. [ A knob may be provided on the end of the coarse adjustment shaft 46 to facilitate rotation, or may be formed in a polygonal shape. The angle adjusting unit is not limited to the above-described embodiment, but may be a structure capable of adjusting the angle of the movable block.

The pressure regulating unit 70 includes a weight supporting member 71 installed on the main body 12 and rotatably mounted on the horizontal supporting portion 61 of the support member 60, And a weight member (72) coupled thereto. The weight supporting member 71 is attached to the horizontal supporting portion 61 by providing a fixing bracket 73 at the end of the horizontal supporting portion 61 and fixing the front end portion of the weight supporting member 71 to the fixing bracket 73 By a hinge pin. A handle 74 for rotating the weight supporting member 71 is provided on the front end side of the weight supporting member 71.

The horizontal support part 61 is slidably installed on the polishing table 15 side and is coupled to the pressing groove 41a of the polishing jig unit to press the polishing jig unit 40, And a rotation preventing shaft 76 which is installed adjacently to the pressing shaft 75 and is movable up and down like the pressing shaft 75 and is coupled with the supporting groove 41b to prevent rotation of the polishing jig unit 40. [ The head portion 75a is disposed on the upper surface of the horizontal support portion 61 so that the upper end side of the pressing shaft 75 is not separated from the horizontal support portion 61. [ The weight member 72 screwed to the weight supporting member 71 is screwed to the weight supporting member 71 corresponding to the end of the pressing shaft 75 so that a load of the weight member 72 screwed to the weight supporting member 71 is transmitted to the upper end side of the pressing shaft 75 And an adjusting pin 77 for applying a voltage. It is preferable that the rotation preventing shaft 76 is supported by the pressing shaft 75 so that the rotation preventing shaft 76 can be raised and lowered.

In order to polish the end face of the optical faber supported on the ferrule by using the optical fiber polishing apparatus constructed as described above, the ferrules (100) supporting the optical fiber for polishing are attached to the first and second polishing jig units (30 or 40) Fixed. The optical fiber is fixed to the first polishing jig unit 30 shown in Figs. 4 and 5 for the purpose of rectangular plane polishing in which a rectangular cross section orthogonal to the axis of the optical fiber has a plane, and the optical fiber is inclined with respect to an orthogonal plane orthogonal to the axis of the optical fiber For the inclined plane polishing in which the inclined cross section is flat, it is fixed to the second polishing jig unit 40 shown in Figs. 6 and 7.

The fixing of the ferrule 100 to the first and second polishing jig units 30 and 40 is carried out by releasing the fixing bolts 34 and separating them from the original plate 31 to the fixing block 33 The ferrule 100 is inserted into the ferrule holding groove 32 and then the fixing bolt 34 is tightened to fix the fixing block 34 to the circular plate or the second polishing jig unit 40, The ferrule 100 is inserted into the ferrule holding groove 43a after the ferrule fixing block 43c is detached from the movable block 42 of the movable block 42 and the ferrule fixing block 43c is fixed to the movable block 42 .

At this time, in order to adjust the angle of the ferrule, the adjustment shaft 46 of the second polishing jig unit 40 shown in Figs. 6 and 7 is rotated to adjust the angle of the movable block 42 with respect to the fixed frame 41 do. At this time, the angle of the movable block 42 with respect to the fixed frame 41 is an angle for tilting the ferrule 100.

When the fixing of the ferrule 100 supporting the optical fiber is completed as described above, the first or second polishing jig unit is mounted on the polishing pad 16 provided on the cotton base table 15 as shown in Figs. 8 and 9 Place it on the top.

 The pressing shaft 75 is inserted into the pressing groove 36 or 41a and the rotation preventing shaft 76 is inserted into the supporting groove 41b. The weight member 72 supported by the weight supporting member 71 is moved forward and backward with respect to the weight supporting member 71 so that the pressure to be applied to the first or second polishing jig unit 30 And the adjusting pin 77 is brought into close contact with the head portion 75a to apply pressure to the first or second polishing jig unit 30 or 40 for polishing. In this state, fine adjustment can be achieved by adjusting the adjustment pin 77 to adjust the weight supporting member 71 at a fine angle.

In this state, the drive motor 23 is driven to rotate the housing 24 in the ring gear 22 to fix the polishing table 15, and the ring gear 22 is fixed to the first gear portion 21 are rotated so that the rotary shaft 29 provided with the polishing table 15 can be rotated.

Thus, the polishing table is rotated and revolved to polish the ferrules 100 supported by the first polishing jig unit 30 or the second polishing jig unit 40.

As described above, the optical fiber polishing apparatus according to the present invention can ensure the uniformity of the polishing and the polishing pressure can be controlled by the clearance and rotation for the polishing. Therefore, the polishing efficiency of the optical fiber- .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (6)

A polishing table provided on a main body portion having an operation panel portion,
A drive unit installed in the main body for rotating and revolving the polishing table,
A polishing pad adhered to the polishing table;
A polishing jig unit positioned on the upper surface of the polishing pad and supporting a plurality of ferrules supported by the optical fiber;
And a pressing force adjusting unit installed on the support member provided on the main body to support the polishing jig unit so as not to rotate and to adjust the pressing force for pressing the ferrules supported on the polishing jig unit to the polishing pad The optical fiber polishing apparatus comprising: The method according to claim 1,
The driving unit for rotating and revolving the polishing table includes a ring gear having a first gear portion formed on an inner circumferential surface of the main body portion, a housing rotatably rotated by a driving bolt provided on the main body portion, A plurality of planetary gears installed to be engaged with the first gear portion and a drive gear provided eccentrically from the center of the housing and coupled to a rotary shaft coupled with the face table, Wherein the optical fiber grinding apparatus comprises: The method according to claim 1,
The polishing jig unit comprises a disk and a fixing block formed on the outer circumferential surface of the disk at regular intervals in the ferrule holding groove and capable of pressing a ferrule supported on the ferrule holding groove on the outer circumferential surface of the disk, Lt; / RTI >
Wherein a pressing member is provided at a center of the upper surface of the disk and formed in a supporting groove at a position spaced apart from the pressing groove by a predetermined distance. The method according to claim 1,
The polishing jig unit includes a fixing block having a pressing groove for pressing and a holding groove for preventing rotation from being formed on an upper surface thereof and having a plurality of supporting surfaces on an outer circumferential surface thereof,
A movable block rotatably installed on the support surface of the fixed block and having a ferrule fixing part for supporting the ferrule and an angle adjusting unit for adjusting the angle of the movable block with respect to the fixed block, Abrasive device. 5. The method of claim 4,
Wherein the angle adjusting unit comprises an adjusting shaft rotatably mounted on the movable block, and a support member rotatably installed on the fixed block and screwed to the adjusting shaft. The method according to claim 1,
Wherein the pressing force adjusting unit comprises a weight member which is provided in the main body and is transportably mounted on a weight supporting member rotatably mounted on the horizontal supporting portion of the support member, A rotation preventing shaft provided adjacent to the pressing shaft and movable up and down as the pressing shaft and coupled with the supporting groove to prevent rotation of the polishing jig unit, And an adjusting pin screwed to the weight supporting member corresponding to an end of the pressure applying shaft and applying a load by the weight supporting member to the upper end side of the pressing shaft.

Images