JP2003062742A - Polishing device for end face and method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polishing device for the end face of bar member and a method therefor which reduce a curvature eccentricity of the end face of bar member, decrease a cost and increase polishing efficiency by using an abrasive sheet efficiently. SOLUTION: The polishing device polishes the end face of a bar member which is mounted on a fixture plate, with an abrasive part 12 which is mounted on a polishing plate 10 being supported rotatably and rockably onto the device body 20. The fixture plate is fixed to a first virtual disk providing a prescribed diameter. A driving means drives the polishing plate 10 relatively with the fixture plate, so that the first virtual disk is revolved and also moved along the circumference of a second virtual disk, and the second virtual disk is revolved and also moved along the circumference of a third virtual disk.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end face polishing apparatus and method for polishing an end face of a rod-shaped member such as an optical fiber.

[0002]

2. Description of the Related Art A fiber for optical communication is used by bonding and fixing the fiber in the center hole of a ferrule, which is a main member of a connector, and then polishing the end face of the ferrule and the end face of the fiber simultaneously to make them mirror-finished. If the polished surface of the ferrule and the optical fiber that have been polished is not a surface perpendicular to the center axis of the ferrule, or if the polished surface is scratched, the optical connector in which the ferrules are connected to each other will face each other with a matching position accuracy. Deteriorates and the loss increases. Therefore, it is necessary to polish the polished surface of the ferrule including the optical fiber with high accuracy.

As a conventional optical fiber end face polishing apparatus, for example, there is one disclosed in Japanese Patent Application Laid-Open No. 3-26456. The optical fiber end face polishing device disclosed in this publication has an eccentric disc that rotates on a concentric circle of a rotating disc, and has a planetary gear that transmits the rotation of a revolution motor to the eccentric disc, and couples these to the polishing disc. While rotating and revolving the polishing plate, the polishing member fixed to this polishing plate,
The end faces of a large number of ferrules held on a jig board are pressed and polished.

[0004]

FIG. 10 shows a locus representing the relative movement of the ferrule with respect to the jig plate when the tip surface of the ferrule is polished by using a polishing sheet as the polishing member.

As shown in FIG. 10 (a), the locus representing the relative movement of the conventional polishing disk with respect to the jig disk is the first virtual disk with the ferrule fixed to the circumference of the first virtual disk 110. The 110 moves along the circumference of the second virtual disk 111 while rotating on its own axis. Due to such relative movement, the locus indicating the relative movement of the polishing plate with respect to the jig plate becomes an internal cycloid as shown in FIG. 10B, and when polishing is continued, the locus becomes dense on the center side of the polishing plate and outside. Becomes sparse.

[0006] In such polishing, there is no problem in the initial state of polishing, but if polishing is continued, the polishing efficiency decreases in the inner dense region, and the polishing efficiency decreases on both sides of the ferrule, that is, on the center side and outside of the polishing sheet. There is a problem that the eccentricity of the curvature of the ferrule becomes large because the polishing amount is different.

Further, by locally using the polishing sheet, there is a problem that consumption of the polishing sheet is severe, replacement of the polishing sheet is frequent, and polishing cost increases.

Further, in the conventional polishing apparatus, the locus of the end face on the polishing sheet is composed of a circle moving on the circumference, and it is necessary to increase the revolution speed of revolution or rotation in order to increase the polishing speed. Therefore, when the rotation speed is increased, the polishing liquid is scattered due to the centrifugal force, and there is a problem that polishing becomes difficult.

In view of the above circumstances, the present invention provides an end surface polishing apparatus and method that reduces the curvature eccentricity of the end surface of a rod-shaped member and efficiently uses a polishing sheet to reduce cost and improve polishing efficiency. The challenge is to provide.

[0010]

According to a first aspect of the present invention for solving the above problems, a jig plate is mounted on a jig plate by a polishing member mounted on a polishing plate rotatably and swingably supported by an apparatus main body. In an end face polishing device for pressing and polishing a rod-shaped member, the jig plate is fixed to a first virtual disc having a predetermined diameter, and the first virtual disc is rotated around the circumference of the second virtual disc. Drive for driving the polishing disk so as to move relative to the jig disk so as to move along the circumference of the third virtual disk while rotating along the circumference of the second virtual disk. The end surface polishing apparatus is provided with a means.

According to a second aspect of the present invention, in the first aspect, the driving means drives the polishing disc so that the diameter of the second virtual disc is smaller than the radius of the third virtual disc. An end surface polishing apparatus characterized by being driven.

According to a third aspect of the present invention, in the first or second aspect, the driving means performs the polishing so that the diameter of the first virtual disk is smaller than the radius of the second virtual disk. It is an end surface polishing device characterized by driving a board.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the driving means slides on the circumference of the second virtual disk while the first virtual disk rotates. In the end surface polishing apparatus, the polishing disk is driven so as to move without moving.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the driving means slides on the circumference of the third virtual disc while the second virtual disc rotates. In the end surface polishing apparatus, the polishing disk is driven so as to move without moving.

A sixth aspect of the present invention is characterized in that, in any one of the first to fifth aspects, a locus drawn by the jig plate relative to the second virtual disc is a roulette shape. It is in the end face polishing device.

According to a seventh aspect of the present invention, in the sixth aspect, the fixing position of each rod-shaped member to the polishing disc is on the circumference of the first virtual disc, and the roulette shape is an inner cycloid. The end surface polishing apparatus is characterized in that

According to an eighth aspect of the present invention, in the sixth aspect, the fixing position of each rod-shaped member to the polishing disc is on the radius of the first disc or an extension line on the outer side in the radial direction, and the roulette. The end surface polishing apparatus is characterized in that the shape is an inner trochoid.

In a ninth aspect of the present invention, in any one of the first to eighth aspects, the drive means includes a first revolution shaft connected to an eccentric position from the center of the polishing plate, and the first revolution shaft. The end surface polishing apparatus is characterized by comprising a rotation axis having the revolution axis as the center of rotation and a second revolution axis provided at the eccentric position.

In a tenth aspect of the present invention, in any one of the first to eighth aspects, the drive means is provided with a rotation shaft connected to the center of the polishing plate and the rotation shaft at an eccentric position. An end surface polishing apparatus comprising a first revolution shaft and a second revolution shaft provided with the first revolution shaft at an eccentric position.

According to an eleventh aspect of the present invention, in the ninth or tenth aspect, the drive means includes an internal gear fixed to the apparatus main body, and a first transmission gear meshing with the internal gear.
An end surface polishing apparatus comprising: a rotary shaft having a second transmission gear at an end opposite to the first transmission gear side end; and an external gear meshing with the second transmission gear. is there.

A twelfth aspect of the present invention is the end face according to any one of the eighth to eleventh aspects, characterized in that the first revolution shaft is connected to a drive motor via a revolution timing belt. It is in the polishing machine.

A thirteenth aspect of the present invention is the end face polishing apparatus according to the twelfth aspect, characterized in that the rotation shaft is connected to the drive motor via a rotation timing belt.

A fourteenth aspect of the present invention is an end surface polishing method for polishing by pressing a rod-shaped member mounted on a jig plate by a polishing member mounted on a polishing plate rotatably and swingably supported by an apparatus main body. , Fixing the jig disk to a first virtual disk having a predetermined diameter, moving the first virtual disk around the circumference of the second virtual disk while rotating the first virtual disk, and moving the second virtual disk to the second virtual disk. End face polishing, characterized in that the polishing plate is driven so as to move relative to the jig plate so as to move along the circumference of the third virtual disk while rotating, and the rod-shaped member is polished. On the way.

A fifteenth aspect of the present invention is characterized in that, in the fourteenth aspect, the polishing disc is driven so that the diameter of the second virtual disc is smaller than the radius of the third virtual disc. There is a method of polishing the end surface.

The sixteenth aspect of the present invention is the fourteenth or fifteenth aspect.
In another aspect, there is provided an end surface polishing method characterized in that the polishing disk is driven so that the diameter of the first virtual disk becomes smaller than the radius of the second virtual disk.

In a seventeenth aspect of the present invention according to any one of the fourteenth to sixteenth aspects, the first virtual disk rotates on the polishing disk while rotating on the circumference of the second virtual disk. There is an end surface polishing method characterized by driving so as to move without movement.

In an eighteenth aspect of the present invention, in any one of the fourteenth to seventeenth aspects, the polishing disk is slid on the circumference of the third virtual disk while the second virtual disk is rotating. There is an end surface polishing method characterized by driving so as to move without movement.

A nineteenth aspect of the present invention is characterized in that, in any one of the fourteenth to eighteenth aspects, a locus drawn by the relative movement of the polishing disc with the second disc is a roulette shape. End face polishing A polishing method.

In a twentieth aspect of the present invention according to the nineteenth aspect, the position where each rod-shaped member is fixed to the polishing disc is on the circumference of the first virtual disc, and the roulette shape is an inner cycloid. There is an end surface polishing method characterized by the above.

In a twenty-first aspect of the present invention based on the nineteenth aspect, the position where each rod-shaped member is fixed to the polishing disc is on the radius of the first virtual disc or on an extension line radially outward. A method of polishing an end face is characterized in that the roulette shape is an inner trochoid.

A twenty-second aspect of the present invention is the end surface polishing method according to any one of the fourteenth to twenty-first aspects, characterized in that the driving is performed by an XY table.

A twenty-third aspect of the present invention is the end face polishing method according to any one of the fourteenth to twenty-second aspects, characterized in that the drive speed of the polishing plate is varied.

In the present invention, it is possible to eliminate a dense or sparse region difference in the trajectory drawn by the rod-shaped member on the polishing sheet. As a result, the curvature eccentricity can be reduced and the wear of the polishing sheet can be reduced without prolonging the polishing amount of the end surface of the rod-shaped member, and the life of the polishing sheet can be extended.

[0034]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of a main part of an end surface polishing apparatus according to Embodiment 1 of the present invention.

As shown in FIG. 1, an elastic body 11 and a polishing sheet 12 on the elastic body 11 are arranged on the upper surface of the polishing surface plate 10 through a main body 20 of the apparatus. The end surface of the rod-shaped member is pressed to perform polishing.

The lower side of the polishing platen 10 and the first revolution shaft 30.
The upper flange portion 31 is connected to the polishing surface plate 10 at a position eccentric by a predetermined amount via a plurality of fixing pins 32,
The polishing platen 10 is rotatably supported by the first revolution shaft 30. Further, the first revolution shaft 30 is the rotation shaft 40.
A transmission unit 41 and a fixing pin 42 are connected to a position eccentric to the rotation shaft 40 by a predetermined amount.

The lower portion of the first revolution shaft 30 meshes with the first transmission gear 50, and the first transmission gear 50 meshes with the second transmission gear 51. Further, the second transmission gear 51 is coaxially connected to the third transmission gear 52. The third transmission gear 52 meshes with the internal teeth of the device body 20.

The lower part of the rotation shaft 40 meshes with the internal teeth of the rotating portion 53 connected via a rotation timing belt 63 arranged outside the rotation pulley 62 connected to the drive shaft 61 of the drive motor 60. It is like this.

The second revolution shaft 70 is the drive motor 60.
The drive shaft 61 is connected to a revolving pulley 64 via a revolving timing belt 65. And the second
Inside the revolution shaft 70, the rotation shaft 40 is arranged at a position eccentric by a predetermined amount.

The first revolution shaft 30 and the rotation shaft 40 as described above.
Further, a driving means for driving the polishing platen 10 is constituted by the second revolution shaft 70 and the like.

Here, the characteristic portion of the drive means of the end surface polishing apparatus of this embodiment will be described. Note that FIG. 2 is a schematic view showing a rotary shaft of the end surface polishing apparatus.

In the figure, the entire body makes an orbital revolution RE1, and the rotation shaft 40 which is eccentric to the center of rotation of the second revolution shaft 70 and is rotated by the external tooth EG1 meshing with the internal tooth IG1.
The inside of the above is revolved around the rotation shaft 40 by the gear G2 meshing with the gear G1 driven by the external tooth EG2 meshing with the internal tooth IG2 via the gear G3.

On the other hand, a jig board 80 to which a plurality of rod-shaped members W such as ferrules are fixed by a support mechanism 21 is supported on the apparatus main body 20, as shown in FIG. In addition,
FIG. 3 is a perspective view of the jig board and a partial cross-sectional view of the end surface polishing apparatus.

As shown in FIG. 3, the jig board 80 has a polygonal shape in which two concave portions 91 to which the side surfaces of the rod-shaped member W are fitted are provided on each side surface, in the present embodiment, a hexagonal shape. A jig board main body 90 and a holding member 100 provided at a position facing the recess 91 so as to be movable in the surface direction of the jig board main body 90 are provided.

In the approximate center of the jig board main body 90, the support mechanism 2
A boss portion 92 is attached which is urged toward the polishing platen 10 by 1 and whose movement in the rotational direction is restricted.

Further, the holding member 100 includes the fixing pin 101.
It is fixed to the side surface of the jig board main body 90 by. Specifically, the fixing pin 101 is inserted through the holding member 100, and the tip end is screwed onto the side surface of the jig board body 90, so that the holding member 100 is movably held in the surface direction of the jig board body 90. . The rod-shaped member W can be sandwiched and fixed between the holding member 100 and the recess 91.

Further, such a jig board 80 is supported by a holding shaft 22 which is urged downward by a predetermined pressing force on a supporting portion 21a fixed to the apparatus body 20. Here, the tip end of the pressing shaft 22 is a conical portion 22a, and this is engaged with the tapered fitting hole 92a of the boss portion 92 provided in the central portion of the jig board 80. Further, the support portion 21a has a rotation stop pin 23 parallel to the pressing shaft 22.
Is provided, and the tip of the rotation stop pin 23 has a boss portion 9
The jig board 80 is inserted into the second locking hole 92b.
Rotation is restricted.

The following is a detailed description of the locus drawn by the drive means of such an end surface polishing apparatus by the drive for moving the polishing platen relative to the jig plate. Note that FIG.
Is a diagram for explaining a virtual disk for drawing a locus,
FIG. 5 is a trajectory showing the relative movement of the rod-shaped member with respect to the polishing sheet.

As shown in FIG. 4, the driving means fixes the jig disk to the first virtual disk 110 having a predetermined diameter and rotates the first virtual disk 110 while rotating the second virtual disk 111. A second virtual disk 111 that moves along the circumference and
The polishing surface plate 10 is driven so as to move relative to the jig plate so as to move along the circumference of the third virtual disk 112 while rotating. As a result, the locus indicating the relative movement of the rod-shaped member W with respect to the polishing sheet is drawn as shown in FIG.

Here, the rotation of the first virtual disk 110 corresponds to the rotation of the rotation shaft 40, and the movement of the first virtual disk 110 along the circumference of the second virtual disk 111 is the first. This corresponds to the revolution rotation RE2 of the revolution shaft 30 of. Further, the rotation of the second virtual disk 111 corresponds to the revolution rotation RE2 by the first revolution axis 30, and the movement of the second virtual disk 111 along the circumference of the third virtual disk 112 is the second. Revolution axis 70
It corresponds to the revolution revolution RE1 of. That is, the first virtual disk 110 is the rotation axis 40, the second virtual disk 111 is the eccentric amount of the rotation axis 40 in the first revolution axis 30, and the third virtual disk 1 is.
12, the rotation radius and the eccentric radius are determined by the eccentric amount of the first revolution shaft 30 in the second revolution shaft 70. It should be noted that such an axis of rotation, a first axis of revolution and a second axis of revolution
The relationship between the virtual disk, the second virtual disk, and the third virtual disk is when the rod-shaped member W is fixed on the circumference of the first virtual disk, and the position where the rod-shaped member W is fixed is It is not limited to this when it is on the radius of the first virtual disk or on the extension line outside in the radial direction.

The driving means drives the jig disk so that the diameter of the second virtual disk 111 becomes smaller than the radius of the third virtual disk 112, and the diameter of the first virtual disk 110 becomes the second virtual disk. It is preferable to drive so that the radius is smaller than the radius of the virtual disk 111. That is, with such a setting, the rotation shaft 40, the first revolution shaft 30, and the second revolution shaft 7 of the drive means.
It is preferable to set a radius of 0 and an eccentricity amount. This is because the diameter of the second virtual disk 111 is the third virtual disk 11
2 is larger than the radius and the diameter of the first virtual disk 110 is larger than the radius of the second virtual disk 111, the loci representing the relative movement of the rod-shaped member W with respect to the polishing sheet overlap and are dense. Area becomes uneven, and the polishing sheet 12
This is because it cannot be used uniformly.

Further, when the driving means moves the polishing platen 10 while rotating the first virtual disk 110 along the circumference of the second virtual disk 111 and the second virtual disk 11 as well.
When 1 is moved while rotating around the circumference of the third virtual disk 112, the axes may be set so as to move so that the circumferences come into contact with each other, or they may contact each other. It may be set to drive so that it does not move without moving, or each axis may be set to drive so as to slide relative to each other when touching each other, or move so as not to slide Each axis may be set so as to be driven as described above.

In this embodiment, the driving means is the polishing platen 10.
Each axis is set so that the first virtual disk 110 and the second virtual disk 111 and the second virtual disk 111 and the third virtual disk 112 can be driven so as not to slip. In this case, the locus of the relative movement of the first virtual disk 110 and the second virtual disk 111 has a roulette shape. Here, the roulette shape means that when another fixed curve rolls without sliding on one fixed fixed curve,
The latter is a curve drawn by a fixed point on a fixed curve.

Further, in the present embodiment, the position of each rod-shaped member W fixed to the first virtual disk 110 is on the circumference of the first virtual disk 110, so that the first virtual disk 11 is formed.
The locus of relative movement between 0 and the second virtual disk 111 is set to be a substantially rhombic inner cycloid as shown in FIG.

That is, in the present embodiment, the locus representing the relative movement of the rod-shaped member W with respect to the polishing sheet 12 becomes the inner cycloid by the first virtual disk 110 and the second virtual disk 111. By moving along the circumference of the virtual disk 112 without rotating while rotating on its own axis, the locus shown in FIG. 5B was obtained.

With such a locus, the density of the loci representing the relative movement of each rod-shaped member W with respect to the polishing sheet can be prevented from being biased, and the polishing sheet 12 can be used uniformly. It is possible to reduce the local consumption of. Thereby, the polishing cost can be reduced. Further, since the polishing of the rod-shaped member W can be performed by the uniformly worn polishing sheet 12, it is possible to reduce the deviation of the polishing amount at the tip of the rod-shaped member W and perform high-precision polishing. Therefore, when the ferrule is polished as the rod-shaped member W, it is possible to reduce the difference in the polishing amount between the both sides of the ferrule, that is, between the center side and the outer side of the polishing sheet 12 and reduce the eccentricity of the curvature of the ferrule.

Incidentally, in such an end surface polishing apparatus, the jig plate can be driven by the driving means by the XY table, so that the complicated rotation system such as the planetary gear for the conventional self-revolution is driven. The end face polishing apparatus can be designed without using a mechanism. XY, which has a longer travel distance
By using the table, the polishing sheet 12 is largely separated from the rod-shaped member W, the state of the end face of the rod-shaped member W is confirmed during polishing, and the polishing sheets 12 having different roughness are placed in other regions of the XY table. A series of polishing steps from placement to rough polishing to finish polishing can be performed using the same apparatus.

Further, by using a single or a plurality of polishing sheets 12 and varying the drive speed, the polishing speed is lowered during rough polishing in the initial state, and the load on the drive system in the state where the frictional resistance is large. Can be reduced. further,
Since the frictional resistance is small during the finish polishing, the entire polishing time can be reduced by increasing the driving speed and the polishing speed. In this way, by varying the drive speed with the polishing sheet 12 or the like, it is possible to reduce scattering of the polishing liquid or the like, improve polishing efficiency, and perform highly efficient polishing.

(Embodiment 2) FIG. 6 is a diagram showing a locus representing relative movement of a rod-shaped member with respect to a polishing sheet according to Embodiment 2.

The second embodiment is an example in which the position where the rod-shaped member is fixed to the first virtual disk 110 is on the extension line on the outer side in the radial direction of the first virtual disk 110. As shown in FIG. 6, the locus drawn by the relative movement of the first virtual disk 111 and the second virtual disk 111 is an inner trochoid.

Even as a driving means for drawing such a locus,
Of course, the same effect as that of the above-described first embodiment can be obtained.

(Embodiment 3) FIG. 7 is a diagram showing a locus indicating relative movement of a rod-shaped member with respect to a polishing sheet according to Embodiment 3.

The third embodiment is an example in which the revolution radius R of the first revolution shaft 30 of the end surface polishing apparatus is made smaller than that of the second embodiment. In such an end surface polishing apparatus, the polishing surface plate 10 is used.
The locus drawn by the relative movement with respect to the second virtual disk 111 is a fine inner trochoid as shown in FIG.

As a driving means for drawing such a locus,
Of course, the same effect as that of the above-described first embodiment can be obtained.

(Embodiment 4) In Embodiments 1 to 3 described above, as the end surface polishing apparatus, the first revolution shaft 30 is provided inside the rotation shaft 40, and the second revolution shaft 70 is provided outside the rotation shaft 40.
Although there is an example of the end surface polishing apparatus, this embodiment is an example in which the arrangement of each shaft of the driving means is changed.

FIG. 8 is a schematic sectional view showing the shaft structure of an end surface polishing apparatus according to Embodiment 4 of the present invention.

As shown in FIG. 8, in the drive means of the end surface polishing apparatus of the fourth embodiment, the first revolution shaft 30 is arranged at a position eccentric by a predetermined amount in the second revolution shaft 70, and the first revolution shaft is rotated. Axis 3
The rotation shaft 40 is arranged at a position decentered by a predetermined amount within 0.

Even with the end surface polishing apparatus having such a shaft structure, the polishing surface plate 10 can be driven so as to follow the loci of Embodiments 1 to 3 described above.

(Embodiment 5) FIG. 9 is a schematic sectional view showing the shaft structure of an end surface polishing apparatus according to Embodiment 5 of the present invention.

In the fifth embodiment, the above-mentioned first to fourth embodiments are provided.
This is an example of a shaft structure different from.

As shown, the drive shaft of the fifth embodiment is
The first revolution shaft 30 is arranged at a position eccentric to the second revolution shaft 70 by a predetermined amount, and a rotation gear 40A is arranged on the polishing surface plate 10 side of the first revolution shaft 30 instead of the rotation shaft. The rotation gear 40A is adapted to rotate on its own axis by meshing with the transmission shaft 43 arranged at a position eccentric to the second revolution shaft 70 by a predetermined amount.

Even with the end surface polishing apparatus having such a shaft structure, the polishing surface plate 10 can of course be driven so as to follow the loci of Embodiments 1 to 3 described above.

As described above, the axial structure of the end surface polishing apparatus of the present invention is not particularly limited.

(Other Embodiments) The first to fifth embodiments of the present invention have been described above, but the basic structure of the end face polishing apparatus and the end face polishing method is not limited to the above.

For example, in the above-described first to third embodiments, the locus drawn by the relative movement of the polishing platen with the second virtual disc 111 is the inner cycloid or the inner trochoid, but the present invention is not limited to this. The locus may be an outer cycloid or an outer trochoid.

In the first to third embodiments described above, the drive means is the first virtual disk 110 and the second virtual disk 11
1, the second virtual disk 111 and the third virtual disk 112
The polishing surface plate 10 was driven so that and move while rotating without rotating, and the trajectory of each relative movement was made to be a roulette shape. However, the present invention is not limited to this, and sliding while rotating. The polishing platen may be driven so as to move. Even if the driving means drives the polishing platen in this manner, the same effects as those of the above-described first to fifth embodiments can be obtained.

[0078]

As described above, according to the end surface polishing apparatus and the end surface polishing method of the present invention, the jig disk is fixed to the first virtual disk having a predetermined diameter, and the first virtual disk is rotated. While moving along the circumference of the second virtual disk and
Since the driving means for driving the polishing disk is provided so as to move relative to the jig disk so as to move along the circumference of the third virtual disk while rotating the virtual disk of FIG. Can be lengthened and the accuracy of polishing the rod-shaped member can be improved. Further, by using the polishing sheet efficiently, the polishing time can be shortened.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a main part of an end surface polishing apparatus according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram showing a characteristic portion of a driving unit of the end surface polishing apparatus according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a jig board and a cross-sectional view of a main part of an end surface polishing apparatus according to Embodiment 1 of the present invention.

FIG. 4 is a diagram illustrating a virtual disk for drawing a trajectory according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a locus indicating relative movement of the rod-shaped member with respect to the polishing sheet according to the first embodiment of the present invention.

FIG. 6 is a diagram showing a locus indicating relative movement of a rod-shaped member with respect to a polishing sheet according to a second embodiment of the present invention.

FIG. 7 is a diagram showing a locus indicating relative movement of a rod-shaped member with respect to a polishing sheet according to a third embodiment of the present invention.

FIG. 8 is a schematic sectional view showing a shaft structure of an end surface polishing apparatus according to a fourth embodiment of the present invention.

FIG. 9 is a schematic sectional view showing a shaft structure of an end surface polishing apparatus according to a fifth embodiment of the present invention.

FIG. 10 is a diagram showing a locus representing relative movement of a rod-shaped member with respect to a polishing sheet according to a conventional technique.

[Explanation of symbols]

10 Polishing surface plate 11 elastic body 12 Polishing sheet 20 Device body 30 First revolution axis 31 Flange 40 rotation axis 40A rotating gear 50, 51, 52 transmission gears 60 drive motor 70 Second revolution axis 80 jig board 90 Jig board body 100 holding member 110 First virtual disk 111 Second virtual disk 112 Third virtual disk

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G02B 6/00 335 G02B 6/00 335 F term (reference) 2H038 CA22 3C034 AA07 AA19 BB01 BB21 BB26 CB20 DD08 3C043 BC00 CC04 CC07 DD02 3C049 AA07 AA11 AB08 CA01 3C058 AA07 AA11 AA16 CA01 CB01 CB03 DA09

Claims (23)

[Claims] 1. An end surface polishing apparatus for pressing and polishing a rod-shaped member mounted on a jig plate by a polishing member mounted on a polishing plate, which is rotatably and rotatably supported by an apparatus body, wherein the jig plate is predetermined. It is fixed to a first virtual disk having a diameter, moves along the circumference of the second virtual disk while rotating the first virtual disk, and rotates while rotating the second virtual disk to the third virtual disk. An end surface polishing apparatus comprising a drive means for driving the polishing disk so as to move relative to the jig disk so as to move along the circumference of a virtual disk. 2. The end surface polishing apparatus according to claim 1,
In the driving means, the diameter of the second virtual disk is the third
2. An end surface polishing apparatus which drives the polishing disk so as to be smaller than the radius of the virtual disk. 3. The end surface polishing apparatus according to claim 1, wherein the driving unit drives the polishing disk so that a diameter of the first virtual disk is smaller than a radius of the second virtual disk. An end surface polishing device characterized by: 4. The end surface polishing apparatus according to any one of claims 1 to 3, wherein the drive means moves without sliding on the circumference of the second virtual disk while the first virtual disk rotates. An end surface polishing apparatus, characterized in that the polishing disk is driven so that 5. The end surface polishing apparatus according to any one of claims 1 to 4, wherein the driving unit moves without sliding on the circumference of the third virtual disk while the second virtual disk rotates. An end surface polishing apparatus, characterized in that the polishing disk is driven so that 6. The end surface polishing apparatus according to claim 1, wherein a locus drawn by the jig plate relative to the second virtual disk has a roulette shape. Polishing equipment. 7. The end surface polishing apparatus according to claim 6,
An end surface polishing apparatus, wherein a fixing position of each rod-shaped member to the polishing disk is on a circumference of the first virtual disk, and the roulette shape is an inner cycloid. 8. The end surface polishing apparatus according to claim 6,
An end surface polishing apparatus, wherein a fixing position of each rod-shaped member to the polishing disk is on a radius of the first disk or on an extension line outside in the radial direction, and the roulette shape is an inner trochoid. 9. The end surface polishing apparatus according to claim 1, wherein the drive means includes a first revolution shaft connected to an eccentric position from the center of the polishing plate, and the first revolution shaft. An end surface polishing apparatus comprising: a rotation shaft having a rotation center as a rotation center; and a second revolution shaft having the rotation shaft provided at an eccentric position. 10. The end surface polishing apparatus according to any one of claims 1 to 8, wherein the drive means has a rotation shaft connected to the center of the polishing plate and a first rotation shaft provided at an eccentric position. And an orbital revolving shaft, and a second revolving shaft having the first orbital revolving shaft provided at an eccentric position. 11. The end surface polishing apparatus according to claim 9, wherein the driving means includes an internal gear fixed to the apparatus main body, a first transmission gear meshed with the internal gear, and the first transmission. An end surface polishing apparatus comprising: a rotating shaft having a second transmission gear at an end opposite to a gear-side end; and an external gear that meshes with the second transmission gear. 12. The end surface polishing apparatus according to claim 8, wherein the first revolving shaft is connected to a drive motor via a revolving timing belt. 13. The end surface polishing apparatus according to claim 12, wherein the rotation shaft is connected to the drive motor via a rotation timing belt. 14. An end surface polishing method in which a rod-shaped member mounted on a jig plate is pressed by a polishing member mounted on a polishing plate, which is rotatably and oscillatably supported by an apparatus main body, to polish the jig plate. It is fixed to a first virtual disk having a diameter, moves along the circumference of the second virtual disk while rotating the first virtual disk, and rotates while rotating the second virtual disk to the third virtual disk. An end surface polishing method comprising: driving the polishing plate so as to move relative to the jig plate so as to move along the circumference of the disk to polish the rod-shaped member. 15. The end surface polishing method according to claim 14, wherein the polishing disk has a diameter of the second virtual disk that is the third virtual disk.
The end surface polishing method is characterized by driving so as to be smaller than the radius of the virtual disk. 16. The end surface polishing method according to claim 14, wherein the polishing disk is driven so that the diameter of the first virtual disk is smaller than the radius of the second virtual disk. End face polishing method. 17. The end surface polishing method according to any one of claims 14 to 16, wherein the polishing disk is moved without sliding on the circumference of the second virtual disk while the first virtual disk rotates. A method for polishing an end surface, characterized in that the end surface polishing method comprises: 18. The end surface polishing method according to claim 14, wherein the polishing disk is moved without sliding on the circumference of the third virtual disk while the second virtual disk is rotating. A method for polishing an end surface, characterized in that the end surface polishing method comprises: 19. The end surface polishing method according to claim 14, wherein a locus drawn by the relative movement of the polishing disk with respect to the second disk has a roulette shape. Method. 20. The end surface polishing method according to claim 19, wherein the fixing position of each rod-shaped member to the polishing disk is on the circumference of the first virtual disk, and the roulette shape is an inner cycloid. A characteristic end surface polishing method. 21. The end surface polishing method according to claim 19, wherein a fixing position of each rod-shaped member to the polishing disk is on a radius of the first virtual disk or an extension line on an outer side in a radial direction,
An end surface polishing method, wherein the roulette shape is an inner trochoid. 22. The end surface polishing method according to any one of claims 14 to 21, wherein the driving is performed by an XY table. 23. The end surface polishing method according to any one of claims 14 to 22, wherein the drive speed of the polishing disk is varied.