Convex spherical surface grinding device

Abstract

To polish a convex spherical surface of an end of a rod-like member by composite operation of rotation around a central axis of the rod-like member, continuous or intermittent transfer of a polishing tape, and pressure-contact of the polishing tape by a pressure-contact member to the convex spherical surface of the rod-like member, and improve polishing accuracy and surface roughness of the convex spherical surface.SOLUTION: A convex spherical surface polishing device includes: a member holding mechanism A for holding a rod-like member W; a member rotation mechanism B for rotating the rod-like member around a central axis; a tape transfer mechanism C for continuously or intermittently transferring a polishing tape T; and a tape pressure-contact mechanism D for bringing the polishing tape into pressure-contact with the convex spherical surface R of the rod-like member by a pressure-contact member D1.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a convex spherical grinding machine used for polishing the convex spherical surfaces of the ends of rod-shaped members such as ferrules for optical connectors, measurement probes, plunger rods for engines, plastic lenses, and other rod-shaped members. Polished This concerns the placement. [Background technology]

[0002] Conventionally, as a polishing device for polishing the convex spherical surface at the end of this type of rod-shaped member, there has been known a structure using a flat polishing sheet or a ring-shaped grinding stone. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2001-246542 [Patent Document 2] Patent Publication No. 2005-028548 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the case of the above-mentioned conventional structure, for example, the convex spherical surface of the optical connector requires high polishing precision in order to suppress light reflection and connection loss, and there is a strong demand for improved polishing workability in order to reduce manufacturing costs. [Means for solving the problem]

[0005] The present invention aims to solve such problems, and claims of the present invention are as follows: 1The described device invention comprises a member holding mechanism which holds a rod-shaped member rotatably about the central axis of the rod-shaped member, a member rotating mechanism which rotates the rod-shaped member about the central axis, a polishing tape which polishes the convex spherical surface of the end of the rod-shaped member, a tape transport mechanism which is provided opposite the member holding mechanism and which transports the polishing tape continuously or intermittently, and a tape pressing mechanism which moves the tape transport mechanism in a pressing manner to press the polishing tape into contact with the convex spherical surface of the rod-shaped member with a pressing member. a swing mechanism for swinging the rod-shaped member held by the member holding mechanism in a direction in which the polishing tape is transferred around a center point of the convex spherical surface on the central axis; The present invention is provided with A pad member made of an elastic material for pressing the polishing tape against the convex spherical surface of the rod-shaped member is attached to the pressing member, and a pair of tape guide grooves for guiding the polishing tape across the pad member are formed in the pressing member, Rotation of the rod-shaped member around the central axis, continuous or intermittent transport of the polishing tape, and pressing of the polishing tape against the convex spherical surface of the rod-shaped member by a pressing member. and a swinging motion in the direction of conveyance of the polishing tape about the center point of the convex spherical surface on the central axis of the rod-shaped member. The convex spherical surface polishing device according to the present invention is characterized in that the convex spherical surface of the end of a rod-shaped member is polished by the combined operation of the above.

[0006] Also, claims 2 The invention of the described apparatus is characterized in that it comprises a pressure adjustment mechanism capable of adjusting the pressure applied by the pressing member between the polishing tape and the convex spherical surface of the rod-shaped member.

[0007] Also, claims 3 The invention of the described device is characterized in that the member holding mechanism includes a collet chuck mechanism capable of holding and releasing the rod-shaped member.

[0008] Also, claims 4 The invention of the described device is characterized in that the member holding mechanism comprises a collet chuck mechanism capable of holding and releasing the rod-like member, and a drawbar mechanism for operating the collet chuck mechanism to hold and release the rod-like member. Effect of the Invention

[0009] As described above, the present invention is Article 1In the above-mentioned invention, when polishing the convex spherical surface at the end of a rod-shaped member, the rod-shaped member is held by a member holding mechanism so as to be rotatable about the central axis of the rod-shaped member, the rod-shaped member is rotated about the central axis by a member rotation mechanism, a polishing tape for polishing the convex spherical surface at the end of the rod-shaped member is continuously or intermittently transported by a tape transport mechanism, and the tape transport mechanism is moved in a pressure-contact manner by a tape pressing mechanism to press the polishing tape against the convex spherical surface of the rod-shaped member by a pressing member, The rod-shaped member is caused to oscillate around the center point of the convex spherical surface on the central axis line by the oscillating mechanism in the direction of conveyance of the polishing tape; Rotation of the rod-shaped member around the central axis, continuous or intermittent transport of the polishing tape, and pressing of the polishing tape against the convex spherical surface of the rod-shaped member by a pressing member. and a swinging motion in the direction of conveyance of the polishing tape about the center point of the convex spherical surface on the central axis of the rod-shaped member. By this combined operation, the convex spherical surface of the end of the rod-shaped member can be polished, the polishing precision and surface roughness of the convex spherical surface can be improved, the polishing workability and polishing efficiency can be improved, and the polishing cost and manufacturing cost can be reduced. A pad member made of an elastic material that presses the polishing tape against the convex spherical surface of the rod-shaped member is attached to the pressure contact member, and a pair of tape guide grooves that can guide the polishing tape across the pad member are formed in the pressure contact member, so that the polishing accuracy and surface roughness of the convex spherical surface can be improved, polishing workability and polishing efficiency can be improved, and polishing costs and manufacturing costs can be reduced.

[0010] Also, claims 2 The described invention is provided with a pressure adjustment mechanism that can adjust the pressure between the polishing tape and the convex spherical surface of the rod-shaped member by the pressing member. Therefore, the pressure between the polishing tape and the convex spherical surface of the rod-shaped member can be appropriately adjusted depending on the material of the rod-shaped member and the size of the convex spherical surface, thereby improving the polishing accuracy and surface roughness of the convex spherical surface.

[0011] Also, claims 3 In the described invention, the member holding mechanism is configured to include a collet chuck mechanism capable of holding and releasing the rod-shaped member, so that the rod-shaped member can be easily held and released, thereby improving the workability and efficiency of polishing the convex spherical surface.

[0012] Also, claims 4 In the described invention, the member holding mechanism comprises a collet chuck mechanism capable of holding and releasing the rod-shaped member, and a drawbar mechanism for operating the collet chuck mechanism to hold and release the rod-shaped member, so that the rod-shaped member can be easily held and released. [Brief description of the drawings]

[0013] [Figure 1]1 is an overall front view of an embodiment of the present invention; [Diagram 2] 1 is an overall side view of an embodiment of the present invention; [Diagram 3] FIG. 1 is a partial cross-sectional plan view of an embodiment of the present invention. [Figure 4] FIG. 2 is a partial rear cross-sectional view of an embodiment of the present invention. [Diagram 5] FIG. 2 is a partially enlarged cross-sectional side view of an embodiment of the present invention. [Figure 6] FIG. 2 is a partially enlarged cross-sectional side view of an embodiment of the present invention. [Figure 7] FIG. 2 is a partially enlarged plan sectional view of an embodiment of the present invention. [Figure 8] FIG. 2 is a partially enlarged rear view of the embodiment of the present invention. [Figure 9] FIG. 2 is a partially enlarged front sectional view of an embodiment of the present invention. [Figure 10] FIG. 2 is a partially enlarged cross-sectional side view of an embodiment of the present invention. [Figure 11] FIG. 2 is a partially enlarged cross-sectional side view of an embodiment of the present invention. [Figure 12] FIG. 2 is a partially enlarged front sectional view of an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] 1 to 12 show an embodiment of the present invention. In this case, as shown in Figs. 1, 2, 3, 5 and 6, the present invention can be broadly divided into a member holding mechanism A that holds a rod-shaped member W rotatably around a central axis W1 of the rod-shaped member W, and a member holding mechanism B that holds the rod-shaped member W rotatably around the central axis W1. R a polishing tape T for polishing the convex spherical surface R of the end of the rod-shaped member W; a tape transfer mechanism C disposed opposite the member holding mechanism A for continuously or intermittently transferring the polishing tape T; a tape pressing mechanism D for pressing and moving the tape transfer mechanism C to press the polishing tape T against the convex spherical surface R of the rod-shaped member W with a pressing member D1; and a swiveling motion W for moving the rod-shaped member W held by the member holding mechanism A in the direction of transfer of the polishing tape around the center point O of the convex spherical surface R on the central axis W1. S and a swing mechanism E for swinging the head.

[0015] In this case, in the above-mentioned component holding mechanism A, as shown in Figures 1, 2 and 5, a machine frame 2 is attached to a machine body 1, a swivel axial shaft 3 of the above-mentioned swivel oscillation mechanism E is horizontally mounted on the upper part of the machine frame 2 so as to be freely swivelable about a swivel axis E1 via a bearing cylinder portion 4, a gear housing 5 is attached to one end of the swivel axial shaft 3, and a component holding mechanism A is attached to the gear housing 5, and in this case, the component holding mechanism A is composed of a collet chuck mechanism A1 capable of holding and releasing the rod-shaped component W, and further, in this case, the component holding mechanism A is composed of a collet chuck mechanism A1 capable of holding and releasing the rod-shaped component W, and a drawbar mechanism A2 which operates the collet chuck mechanism A1 to hold and release the collet chuck mechanism A1.

[0016] In this case, as shown in Figures 4 and 5, in the member rotating mechanism B, a horizontal transmission shaft 6 is rotatably installed horizontally on the same axis as the oscillation axis E1 of the oscillation cylinder shaft 3 of the oscillation mechanism E, a vertical transmission shaft 7 is rotatably installed vertically in the gear housing 5, a pair of transmission gears 6a and 7a are interposed between the horizontal transmission shaft 6 and the vertical transmission shaft 7, and a matching adjustment mechanism B1 is provided that can adjust the oscillation axis E1 of the member holding mechanism A by the oscillation mechanism E to match with the center point O of the convex spherical surface R on the central axis W1 of the rod-shaped member W held by the member holding mechanism A. In this case, the matching adjustment mechanism B1 is provided with a rotation transmission mechanism B2 that includes a movable gear 8 that is movable in the direction of the central axis W1 of the rod-shaped member W, and a fixed gear 9 that meshes with the movable gear 8 and is fixed in position so as not to move in the direction of the central axis W1 of the rod-shaped member W.

[0017] In this case, as shown in Figs. 1, 4, 5 and 9, the movable housing 10 of the member holding mechanism A is provided in the gear housing 5 by means of a long hole 10a and a bolt 10b so as to be vertically slidable, a cylindrical main shaft 11 of the member holding mechanism A is vertically provided in the movable housing 10 so as to be rotatable, a fixed gear 9 having a long tooth width taking into account the radius r from the center point O of various convex spherical surfaces R of the rod-shaped member W is attached to the vertical transmission shaft 7, a movable gear 8 meshing with the fixed gear 9 and movable in the direction of the central axis W1 of the rod-shaped member W is attached to the main shaft 11, and a rotating gear 8 is attached to the lower part of the machine frame 2. A motor 12 is attached, and a belt transmission mechanism 13 is interposed between the main shaft 12a of the rotating motor 12 and the horizontal transmission shaft 6. The rotation of the rotating motor 12 rotates the cylindrical main shaft 11 of the member holding mechanism A via the horizontal transmission shaft 6, the pair of transmission gears 6a and 7a, the vertical transmission shaft 7, the fixed gear 9 of the rotation transmission mechanism B2, and the movable gear 8. Furthermore, the movable housing 10 is configured to be adjusted up and down relative to the gear housing 5 by the long holes 10a and bolts 10b in accordance with the size of the radius r from the center point O of the various convex spherical surfaces R of the rod-shaped member W.

[0018] In this case, the tape transfer mechanism C and the tape pressing mechanism D are disposed above the member holding mechanism A, as shown in Figs. 1, 2 and 6. A mounting bracket 2a is attached to the upper surface of the machine frame 2. A tape body 14 is attached to the mounting bracket 2a so as to be vertically slidable by a sliding table 14a and a guide member 14b. A mounting piece 2b is attached to the mounting bracket 2a. A pressing cylinder D2 is attached to the mounting piece 2b. The tape body 14 is vertically pressed and moved by the pressing cylinder D2. A wound reel 15 is rotatably disposed on the tape body 14 by a support shaft 15a. An unused polishing tape T wound on the wound reel 15 is rotatably supported on a support shaft 19a via guide rolls 16a, 16b, a guide roll 17a, a pressing member D1 of the tape pressing mechanism D, the guide roll 17b, the guide roll 16c, a take-up roll 18a of the take-up shaft 18, and a guide roll 16d. The abrasive tape T is wound around the empty reel 19 that has been wound around it, the full-wound reel 15 is rotated for unwinding by an unwinding motor 20, the take-up shaft 18 is rotated for winding by a take-up motor 21, and the rotation of the take-up shaft 18 rotates the empty reel 19 for winding via a pulley mechanism 22. A swing arm 23a is pivotally attached to the tape body 14 by a support pin 23b so as to be swingable, and a pressure roll 23b is attached to one end of the swing arm 23a, which presses the abrasive tape T against the circumferential surface of the take-up roll 18a. 3c is provided, and an adjustment screw 23d is attached to the other end, a stopper 23e is attached to the tape body 14, and a spring 23f is interposed between the other end of the swing arm 23a and the stopper 23e. Then, the unwinding motor 20 and the winding motor 21 are rotated and controlled to wind the unused polishing tape T wound on the actual winding reel 15 onto the empty reel 19 via the tape pressing mechanism D, and the polishing tape T is transported continuously or intermittently. R At the same time, the tape unit 14 is moved up and down to press the polishing tape T against the convex spherical surface R of the rod-shaped member W with the pressing member D1, so as to press D3.

[0019] 1 and 2, an adjustment cylinder 24 is attached to the center of the tape unit 14, a pressure rod 25 is provided at the bottom of the adjustment cylinder 24 so as to be vertically slidable, the pressure member D1 is attached to the lower end of the pressure rod 25, a holding piece 26 is attached to the adjustment cylinder 24, and a pair of guide rolls 17a and 17b are supported on the holding piece 26 with the pressure member D1 as a boundary, and a pad member F1 made of an elastic material is attached to the bottom surface of the pressure member D1, as shown in FIG. Thus, tape guide grooves F2·F2 are formed to guide the polishing tape T in the running direction, an adjustment screw 27 is screwed into the upper part of the adjustment tube 24, and a pressure adjustment spring 28 is interposed between the lower end of the adjustment screw 27 and the upper end of the pressure contact rod 25. The pressure adjustment spring 28 elastically presses the pressure contact rod 25 against the stopper step portion 24a of the adjustment tube 24. The spring pressure of the pressure adjustment spring 28 is variably adjusted by rotating the adjustment screw 27 forward and backward, thereby making it possible to adjust the pressure contact force between the polishing tape T and the convex spherical surface R of the rod-shaped member W by the pressure contact member D1.

[0020] In this case, the polishing tape T has a structure in which abrasive particles of a predetermined grain size, such as aluminum oxide, chromium oxide, silicon carbide, diamond, etc., are coated on or bonded to a base material such as polyester film, metal, or cloth.

[0021] In this case, the oscillating mechanism E is composed of an eccentric link mechanism G, and as shown in Figs. 4, 5, 7 and 8, a oscillating plate 29 is attached to the rear of the oscillating cylindrical shaft 3, a swing motor 30 is arranged in parallel with the rotation motor 12 at the bottom of the machine frame 2, an eccentric adjustment member 31 is directly connected to the main shaft 30a of the swing motor 30, a T-shaped groove 31a is formed in the eccentric adjustment member 31, a moving piece member 32 is provided slidably in the T-shaped groove 31a, a connecting plate 33 is pivotally connected to the moving piece member 32 by a fastening bolt 33a, and the oscillating mechanism E is configured as follows: A crank rod 35 is pivotally supported between the pivot pin 34 of the movable plate 29 and the connecting plate 33, and a pair of opposing adjustment bolts 31b are provided on both the left and right sides of the eccentricity adjustment member 31. The opposing pair of adjustment bolts 31b are tightened, loosened, and rotated to slide the moving piece member 32 along the T-shaped groove portion 31a. The eccentricity amount ε between the axis O1 of the main shaft 30a of the oscillation motor 30 and the pivot center O2 of the moving piece member 32 is variably adjusted, and the oscillation motion W of the oscillation cylinder shaft 3 about the oscillation axis E1 is adjusted in accordance with the convex spherical surface R of the rod-shaped member W. S Swing range E R is configured to be adjustable.

[0022] In this case, as shown in Figs. 1, 5 and 6, in the collet chuck mechanism A1 capable of holding and releasing the rod-shaped member W of the member holding mechanism A and the drawbar mechanism A2 for holding and releasing the collet chuck mechanism A1, a drawbar shaft 36 is provided on the cylindrical main shaft 11 of the member holding mechanism A in the movable housing 10 so as to be vertically slidable, a collet chuck 37 capable of clamping the rod-shaped member W is attached to the upper end of the drawbar shaft 36, a tapered inner surface 11a that can be brought into contact with and separated from a tapered outer surface 37a of the collet chuck 37 is formed on the upper inner peripheral surface of the main shaft 11, and an adjustment restriction pin 38 having a different height that can be replaced depending on the size of the radius r from the center point O of various convex spherical surfaces R of the rod-shaped member W is arranged on the inner bottom surface of the collet chuck 37, and the drawbar shaft 36 is provided with a drawbar shaft 36 that can be vertically slidably mounted on the cylindrical main shaft 11 of the member holding mechanism A. An adjustment nut 39 is screwed onto the lower end of the drawbar shaft 36, a clamping spring 40 is hung between the adjustment nut 39 and the lower end of the cylindrical main shaft 11, and a rotation prevention mechanism 41 consisting of a rotation prevention pin 41a and a rotation prevention groove 41b capable of preventing rotation of the cylindrical main shaft 11 is provided. Further, a release mechanism 42 consisting of a protruding pin 42a and a protruding cylinder 42b is provided at the lower part of the machine frame 2 opposite the lower end of the drawbar shaft 36, and the clamping spring 40 elastically presses the drawbar shaft 36 downward to clamp the collet chuck 37, and the protruding cylinder 42b of the release mechanism 42 pushes up the protruding pin 42a against the clamping spring 40 to separate the tapered inner surface 11a of the cylindrical main shaft 11 and the tapered outer surface 37a of the collet chuck 37 from each other, thereby releasing the rod-shaped member W.

[0023] 43 is a positioning mechanism, which is arranged to position the central axis W1 of the rod-shaped member W held by the member holding mechanism A and the oscillating motion W S Swing range E RThe member holding mechanism A is configured to be positioned and fixed at a position where the center of oscillation distribution center E2 of the rod-shaped member W is on the same axis, in this case, the position where the rod-shaped member W stands upright, and this is also the origin of control of the machine. In this case, as shown in Figures 3, 4, and 12, a positioning groove 43a is formed in the oscillating plate 29 at the rear of the oscillating and swinging cylindrical shaft 3, a positioning cylinder 43b is attached to the rear of the machine frame 2, a positioning roll 43c that can be fitted into the positioning groove 43a is attached to the rod of the positioning cylinder 43b, the positioning roll 43c is moved forward and backward by the positioning cylinder 43b, and the central axis W1 of the rod-shaped member W held by the member holding mechanism A and the oscillating and swinging motion W of the rod-shaped member W are controlled by fitting and disengaging the positioning roll 43c into and from the positioning groove 43a. S Swing range E R The member holding mechanism A is positioned at a position where the oscillation distribution center E2 of the member holding mechanism A is on the same axis, and the oscillating oscillation movement of the oscillating cylindrical shaft 3 is permitted by disengagement of the positioning roll 43c from the positioning groove portion 43a.

[0024] Since this embodiment has the above-mentioned configuration, as shown in Figures 5, 9 and 12, when polishing the convex spherical surface R at the end of the rod-shaped member W, the rod-shaped member W is held by the member holding mechanism A so as to be rotatable about the central axis W1 of the rod-shaped member W, the rod-shaped member W is rotated about the central axis W1 by the member rotating mechanism B, the polishing tape T for polishing the convex spherical surface R at the end of the rod-shaped member W is continuously or intermittently transported by the tape transport mechanism C, the tape transport mechanism C is moved in pressure contact with the polishing tape T by the pressure contact member D1 by pressing the tape transfer mechanism C, and the rod-shaped member W is moved by the swinging mechanism E around the center point O of the convex spherical surface R on the central axis W1 to transport the polishing tape T. R Therefore, the rod-shaped member W rotates about the central axis W1. R , Continuous or intermittent transport of the polishing tape T R , pressing D3 of the polishing tape T against the convex spherical surface R of the rod-shaped member W by the pressing member D1, and conveying T of the polishing tape T around the center point O of the convex spherical surface R on the central axis W1 of the rod-shaped member W. R Swing movement in W direction SBy this combined operation, the convex spherical surface R at the end of the rod-shaped member W can be polished, thereby improving the polishing accuracy and surface roughness of the convex spherical surface R, improving the ease and efficiency of polishing, and reducing polishing and production costs.

[0025] In this case, as shown in Figs. 5 and 12, the alignment adjustment mechanism B1 is provided, which can adjust the alignment between the oscillating axis E1 of the member holding mechanism A by the oscillating mechanism E and the center point O of the convex spherical surface R on the central axis W1 of the rod-shaped member W held by the member holding mechanism A. Therefore, the alignment adjustment mechanism B1 can adjust the alignment between the oscillating axis E1 and the center point O of the convex spherical surface R on the central axis W1 of the rod-shaped member W according to the magnitude of the radius r from the center point O of various convex spherical surfaces R of the rod-shaped member W, thereby improving the polishing accuracy and surface roughness of the convex spherical surface R and responding to various changes in the specifications of the rod-shaped member W. Therefore, the polishing versatility can be improved. In this case, as shown in FIG. 5, the matching adjustment mechanism B1 is provided with a rotation transmission mechanism B2 including a movable gear 8 movable in the direction of the central axis W1 of the rod-shaped member W, and a fixed gear 9 meshed with the movable gear 8 and fixed in position so as not to move in the direction of the central axis W1 of the rod-shaped member W. Therefore, the structure of the matching adjustment mechanism B1 can be simplified, the manufacturing cost of the device can be reduced, and the polishing accuracy and surface roughness of the convex spherical surface R can be improved, thereby improving the polishing workability and polishing efficiency.

[0026] In this case, as shown in FIG. 2, a pressure adjustment mechanism F is provided that can adjust the pressure applied by the pressing member D1 between the polishing tape T and the convex spherical surface R of the rod-shaped member W. Therefore, the pressure applied by the pressing member D1 between the polishing tape T and the convex spherical surface R of the rod-shaped member W can be appropriately adjusted depending on the material of the rod-shaped member W and the size of the convex spherical surface R, and the polishing precision and surface roughness of the convex spherical surface R can be improved. In this case, as shown in FIG. 3 and FIG. 12, the central axis W1 of the rod-shaped member W held by the member holding mechanism A and the oscillating motion W of the rod-shaped member W can be adjusted appropriately depending on the material of the rod-shaped member W and the size of the convex spherical surface R. S Swing range E R The positioning mechanism 43 is provided to position the member holding mechanism A at a position where the center of oscillation distribution E2 of the rod-shaped member W is on the same axis, in this case, at a position where the rod-shaped member W stands upright.R The rod-shaped member W can be stopped and held at the swing distribution center E2 of the convex spherical surface R, improving the polishing accuracy and surface roughness of the convex spherical surface R, and can also be used as the origin of machine control. In this case, as shown in Figures 4 and 5, the swing mechanism E is made of an eccentric link mechanism G, so the structure of the swing mechanism E can be simplified and the manufacturing cost of the device can be reduced. Furthermore, the swing motion W S Swing range E R This makes it easy to change the size of the convex spherical surface R, and further improves the polishing accuracy and surface roughness.

[0027] In this case, as shown in FIG. 5, the member holding mechanism A is configured to include a collet chuck mechanism A1 capable of holding and releasing the rod-shaped member W, so that the rod-shaped member W can be easily held and released, improving the workability and efficiency of polishing the convex spherical surface R. In this case, as shown in FIG. 5, the member holding mechanism A is configured to include a collet chuck mechanism A1 capable of holding and releasing the rod-shaped member W, and a drawbar mechanism A2 that operates the collet chuck mechanism A1 to hold and release the rod-shaped member W, so that the rod-shaped member W can be easily held and released.

[0028] Incidentally, the present invention is not limited to the above-described embodiments, and the rod-shaped member W, member holding mechanism A, collet chuck mechanism A1, drawbar mechanism A2, member rotation mechanism B, alignment adjustment mechanism B1, rotation transmission mechanism B2, tape transfer mechanism C, tape pressure mechanism D, pressure member D1, oscillating mechanism E, pressure adjustment mechanism F, eccentric link mechanism G, structure of positioning mechanism 43, material and structure of polishing tape T, etc. may be designed and modified as appropriate.

[0029] Furthermore, the present invention is not limited to the above-described embodiments. For example, the above-described embodiments are of a dry polishing structure, but it may also be of a so-called wet polishing structure in which a processing liquid containing a chemical agent or a lubricant is supplied.

[0030] As described above, the intended purpose can be fully achieved. [Explanation of symbols]

[0031] W Rod-shaped member W1 center axis W R rotate A Component holding mechanism A1 collet chuck mechanism A2 drawbar mechanism B. Parts rotation mechanism C Tape transport mechanism D Tape pressure mechanism D1 Pressure Welding Material D3 Pressure Welding F Pressure adjustment mechanism F1 pad material F2 tape guide groove R convex sphere T Polishing Tape T R transfer

Claims

1. the member holding mechanism for holding a rod-shaped member rotatably about a central axis of the rod-shaped member, a member rotating mechanism for rotating the rod-shaped member about the central axis, a polishing tape for polishing the convex spherical surface of the end of the rod-shaped member, a tape transport mechanism provided opposite the member holding mechanism for transporting the polishing tape continuously or intermittently, a tape pressing mechanism for pressing the tape transport mechanism to press the polishing tape against the convex spherical surface of the rod-shaped member with a pressing member, and a swinging mechanism for swinging the rod-shaped member held by the member holding mechanism in a swinging direction of the polishing tape around the central point of the convex spherical surface on the central axis. a pad member made of an elastic material for pressing the polishing tape against the convex spherical surface of the rod-shaped member is attached to the pressing member, a pair of tape guide grooves for guiding the polishing tape across the pad member are formed in the pressing member, and the convex spherical surface of the end of the rod-shaped member is polished by a combined action of rotating the rod-shaped member about the central axis of the rod-shaped member, continuously or intermittently transporting the polishing tape, pressing the polishing tape against the convex spherical surface of the rod-shaped member by the pressing member, and oscillating in the transport direction of the polishing tape around the central point of the convex spherical surface on the central axis of the rod-shaped member.

2. 2. The convex spherical surface polishing apparatus according to claim 1, further comprising a pressure adjustment mechanism for adjusting the pressure of said pressing member between said polishing tape and said convex spherical surface of said rod-shaped member.

3. 2. The convex spherical surface polishing apparatus according to claim 1, wherein said member holding mechanism includes a collet chuck mechanism capable of holding and releasing said rod-shaped member.

4. 2. The convex spherical surface polishing apparatus according to claim 1, wherein said member holding mechanism comprises a collet chuck mechanism capable of holding and releasing said rod-shaped member, and a drawbar mechanism for operating said collet chuck mechanism to hold and release said rod-shaped member.

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