JPH1034518A - Ornament side face polishing method and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively polish only the side face of an ornament that has horizontal surface not to be polished by revolving a container containing a polishing medium, within a vertical plane, and bringing the polishing medium of relative resultant acceleration of gravity and vertical acceleration received by the polishing medium in the container, into contact with the side face. SOLUTION: At the time of polishing the side faces of temples forming a spectacle frame, a polishing medium is filled in a container 36 so as to occupy volume of about 60% of internal space, and a temple group with a large number of temples T parallelly arranged in a vertical direction is fixed to a fixing means provided on the inner surface side of a container cover. A start button is then pressed to drive a revolving motor 5. Four fitting frames 31A, 31B,... with the containers 36 respectively fitted thereto are thereby rotated at equal angular velocity integrally with rotary discs 12, but at this time, four fitting frames are controlled to be always in the same attitude, that is, to face a vertical direction, by planetary means 14, 15A, 15B,..., and the polishing medium is moved only vetically to polish only the side faces of the temples T.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for polishing a side surface of a decorative article. More specifically, the present invention relates to a decorative article side polishing method and apparatus for polishing the side of a decorative article whose upper and lower surfaces must not be polished.

[0002]

BACKGROUND OF THE INVENTION The added value of mass produced eyeglass frames is enhanced by design and finish. Of the finishing processes for eyeglasses completed through about 300 steps, the polishing step is extremely important. It is no exaggeration to say that the value of glasses is determined by the quality of polishing.

[0003] The temples constituting the spectacle frame have upper and lower surfaces (the side surfaces which are perpendicular to the direction of gravity in the state of use of the completed spectacles, but in consideration of the state during the processing step, in this specification, One of the upper and lower sides), a brand name and a patterned and distinctive design are given. The temple is manufactured by partially shaping a round bar by pressing. The design is applied to the flat part by press molding. At the time of such molding, a wrinkled or wavy uneven surface is formed on the side surface. Such uneven surfaces are formed with invisible smaller wrinkles and lack luster. Such side surfaces require polishing. Poor polishing results in poor gloss even after a multi-step process including a subsequent plating process.

According to a conventionally known polishing method, that is, a centrifugal polishing method in which an article to be polished is put in a container containing a polishing medium and the container is revolved and rotated, the container is rotated by a polishing medium rotating with respect to the container. The entire circumference, that is, the upper and lower surfaces and side surfaces of the article to be polished is polished, and even the pattern or design imprinted on the upper surface is polished.

At present, there is a manual operation in which a workpiece to be polished is held by hand so that the upper surface is not polished, and the side surface thereof is brought into contact with a polishing member to polish only the side surface. In order to overcome this situation, the present inventor has set an article to be polished so that the side face is vertical in a container that reciprocates linearly in the vertical direction, and the relative acceleration between the side face and the polishing medium is vertical. We tried a polishing method to make it suitable for, but there was a grudge that the mechanical system that vibrates the container in the vertical direction was violent, the durability of the mechanical system was lacking, and the noise was not able to overcome the disadvantage Was.

[0006]

SUMMARY OF THE INVENTION The present invention has been made based on such a technical background, and achieves the following objects.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and an apparatus for polishing a side surface of a decorative article in which the side surface is polished without polishing the upper and lower surfaces.

It is another object of the present invention to provide a method and an apparatus for polishing a side surface of a decorative article which mainly polishes the side surface without polishing the upper and lower surfaces as much as possible.

It is still another object of the present invention to provide a method and an apparatus for polishing a side surface of a decorative article having a high polishing efficiency by polishing the side surface without polishing the upper and lower surfaces.

It is still another object of the present invention to provide a method and an apparatus for polishing a side surface of a decorative article having a high work efficiency by polishing the side surface without polishing the upper and lower surfaces.

It is still another object of the present invention to provide a method and an apparatus for polishing a side surface of a decorative article in which the side surface is polished without polishing the upper and lower surfaces so that no severe vibration and noise are generated in a mechanical system.

[0012]

Means for Solving the Problems To solve the above-mentioned problems, the following means are adopted.

The decorative article side polishing method according to the first aspect of the present invention is a decorative article side polishing method for polishing the side face of a decorative article in which upper and lower surfaces must not be polished or need not be polished. Revolving the set container substantially in a vertical plane without substantially rotating, fixing the decorative article in the container so that the upper and lower surfaces face substantially horizontal, and receiving the polishing medium in the container in a vertical direction. The polishing medium is brought into contact with the side surface at a relative combined acceleration obtained by combining the acceleration and gravity and the side surface is polished by the polishing medium.

According to a second aspect of the present invention, in the method for polishing a side surface of a decorative article according to the first aspect, a large number of the decorative articles are vertically arranged, and a gap is provided between vertically adjacent decorative articles.

According to a third aspect of the present invention, in the first aspect, the relative acceleration α is α = g + Acos {ω (t−T)}, where ω is a rotational angular velocity A is a rotational radius and a period. It is characterized in that the acceleration constant is approximately represented by t: time g: gravitational acceleration T: delay phase.

A fourth aspect of the present invention is a method of polishing a side surface of a decorative article according to one of the first, second, and third inventions, wherein the revolution comprises forward rotation and reverse rotation.

A fifth aspect of the present invention is a method for polishing a side surface of a decorative article according to the fourth aspect, wherein the upper and lower surfaces are inverted by inverting the container.

A method of polishing a decorative article according to a sixth aspect of the present invention is characterized in that, in the fifth aspect, a combination of the two states of the forward and reverse rotations and the two states of the reverse rotation are four different states.

According to a seventh aspect of the present invention, there is provided a decorative article side polishing apparatus comprising: a rotating body that rotates about a substantially horizontal axis; a container attached to the rotating body and having a polishing medium therein; Ornament mounting means for fixing and mounting the ornament in the container so that the upper and lower surfaces face substantially horizontally, and rotating the container with respect to the rotating body so as not to rotate the revolving container. Planetary means for planetary with respect to the horizontal axis.

According to an eighth aspect of the present invention, there is provided the decorative article side polishing apparatus according to the seventh aspect, wherein the decorative article mounting means includes a fixing body for fixing the decorative articles substantially vertically. Is characterized in that it has a corrugated surface forming a sandwiching surface sandwiching it from both sides, and the fixed body is a metal body having elasticity so that the interval between the waves on the uneven surface can be expanded and contracted.

According to a ninth aspect of the present invention, in the ninth aspect, the fixed body is detachable from the container.

A tenth aspect of the present invention is the decorative side polishing apparatus according to the eighth aspect, wherein the container is detachable from the rotating body, and the fixed body is detachable from the container. And

[0023] An eleventh aspect of the present invention is directed to the decorative article side polishing apparatus according to the tenth aspect, wherein the rotation angle of the container with respect to the stopped rotating body can be changed.

Further, the present invention provides, in any combination of the inventions selected from the above inventions 1 to 10, positioning means capable of inserting the container by positioning it on the mounting frame which revolves and does not rotate, and simple opening and closing of the container and the container lid. Means are provided, and the fixed body is composed of a both-side holding body, a center-side holding body, and a spacer. Other configurations and means will be apparent through the embodiments.

[0025]

According to the method for polishing a side face of a decorative article of the present invention, a container which moves circularly in a vertical plane generally revolves in a circular motion but does not rotate. The polishing medium in such a container,
Although it receives the centrifugal force of the horizontal component periodically, it is sandwiched between the side walls facing each other in the horizontal direction, so that the polishing medium, which is a fluid, behaves like a rigid body in the horizontal direction, and vibrates in the horizontal direction Do not do. However, the polishing medium, which is a fluid that is flowable because it is not clogged in the container and flows in the vertical direction of the container, that is, the direction of action of gravity, that is, the vertical direction, vibrates freely and vertically in the vertical direction. I do.

Such a relative acceleration is represented by the relative acceleration between the polishing medium floating in the air in the container and the object to be polished fixed to the container. And a large synthetic acceleration is obtained once during one revolution.

Since the means for generating the relative acceleration in the linear direction between the polishing medium and the article to be polished is the revolving means, the container moves at a constant angular velocity and no sharp acceleration occurs at both ends on the straight line. There is almost no noise.

Such a polishing medium which does not vibrate in the horizontal direction and vibrates in the vertical direction does not move relative to the upper and lower surfaces of the spectacle frame in the container, but moves relative to the side surface of the spectacle frame in the container. Are moved relative to each other, so that the upper and lower surfaces of the spectacle frame are not polished, and the side surfaces are polished. This was completely confirmed by the apparatus of the embodiment described later.

The method for polishing a side face of a decorative article according to the present invention further comprises:
Since the revolving direction is reversed, the asymmetry regarding the position of each of a large number of articles to be polished in the container is alleviated, and the asymmetry regarding the vertical direction of the article to be polished is also alleviated due to the upside down of the polished article. The finished state is averaged.

Since the container is detachable from the rotating body for revolving, the polished product and the unpolished product can be exchanged for the container removed from the rotating body. An unpolished product is set in another container during polishing, and when polishing is completed, a new container can be attached to the rotating body, so that work efficiency is high. Since the fixed body for directly setting the articles to be polished is detachable from the container, it is easy to set a large number of articles to be polished on the fixed body.

The fixed body, which is an elastic body and fixes a large number of articles to be polished between repetitive uneven surfaces formed in a wavy shape, can reliably fix a large number of articles to be polished.

[0032]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a spectacle frame to which a method according to the present invention is applied will be described. FIG.
(A), (b), and (c) show a sample of an unpolished product that is polished by the decorative product side surface polishing method of the present invention. This unpolished product becomes a temple of the spectacle frame after completion.

The temple shown in FIG. 1 is an unfinished product,
Hereinafter, it is referred to as a temple T for convenience. The material of Temple T is
It is a titanium alloy. The temple T is obtained by deforming a round bar having a circular cross section by press molding, and is not formed by casting. The temple T is formed of a root portion (portion closer to the lens) T1, an intermediate portion T2, and a tip portion (portion closer to the ear) T3.

Most of the tip T3 is a round bar before press molding. The root part T1 and the intermediate part T2 are deformed substantially flat. The thickness of the root portion T1 is larger than the thickness of the intermediate portion T2. The upper and lower surfaces and side surfaces of the temple T are defined as follows. The root portion T1 and the intermediate portion T2 have two opposing surfaces having a large area and two opposing surfaces which are substantially perpendicular to the two opposing surfaces and have a small area.

A surface having a large area is called upper and lower surfaces, and a surface having a small area is called both side surfaces (however, generally, it will be described in more detail with reference to FIG. 20). With the finished glasses attached to a person's face, the names by such a definition are reversed. That is, the upper and lower surfaces defined above are both side surfaces in the use state, and the both side surfaces defined above are upper and lower surfaces in the use state.
On one surface of the upper and lower surfaces of the root portion T1, a pattern / design T4 for brand display or the like formed by an uneven surface is stamped and applied by press molding. Since the intermediate portion T2 is press-molded thinner, both side surfaces have the same shape as in FIG.
The wrinkled and wavy uneven surface T5 shown in FIG.

The wavy uneven surface T5 has two or three streaky waveforms and is visible, but small invisible uneven surfaces are formed between the waves. Although small irregularities on both side surfaces T5 are not visible, it can be seen that the surface is rough when touched with a finger.
T1 must not be polished and T5 must be polished. In such a technical sense, the term “side polishing” is used in the name of the present invention.

Next, an embodiment of the present invention will be described. FIG. 1 shows an embodiment of an eyeglass frame side surface polishing apparatus according to the present invention. The apparatus main body of the eyeglass frame side polishing apparatus includes a frame 1. The frame 1 includes both side walls 2 and upper and lower walls 3. The sturdy frame 1 is firmly supported on a base 4.

A revolving motor 5 for revolving the following means is mounted on the base 4. The revolution motor 5 can rotate at a constant speed. A revolving drive shaft 6 is rotatably supported on both side walls 2. Drive shaft for revolution 6
Is the horizontal direction. A flywheel 7 is mounted on the revolving drive shaft 6.

A driven pulley 8 is connected to an end of the revolving drive shaft 6 that passes through the flywheel 7. A driving pulley 9 is connected to an output shaft of the revolution motor 5. A power transmission belt 11 is stretched between the driven pulley 8 and the driven pulley 9. Two rotating disks 12 on both sides in frame 1
Are coaxially fixed to the revolving drive shaft 6.

The rotating disks 12 each rotate in a vertical plane. Four rotating shafts 13A, 13B, 13C, and 13D (hereinafter, collectively referred to as rotating shafts 13) are provided between the rotating disks 12 on both sides. Rotating shaft 1
3 are arranged at equal angular intervals on the same circumference.

Each of the four rotation shafts 13 rotates with respect to the rotating disk 12, but does not rotate with respect to the frame 1, that is, in the coordinate system fixed to the apparatus system. Therefore, the rotation shafts 13 are rotatably supported by the rotating disk 12.

Conventional means are used as a planetary device that revolves but does not rotate. The sun as planetary means
Planetary gear devices, epicyclic chain means, etc. are known,
The planetary means shown in FIG. 2 is an orbital chain means. Two sun sprockets 14 are coaxially mounted and fixed to the other end of the revolving drive shaft 6.

Four rotating shafts 13A, 13B, 13
One end of each of C and 13D has a planetary sprocket 1
5A, 15B, 15C and 15D are rotatably mounted. One endless chain 16 orbits around two planetary sprockets 15A and 15B and one sun sprocket 14. The other two planetary sprockets 15
C, 15D and the other one of the sun sprockets 14, another one endless chain 17 orbits.

Sprockets 18 and 19 for tensioning the two chains 16 and 17 are arranged on the orbits of the two chains so as to be movable in the radial direction. A planetary gear can be used instead of the chain type. The revolving cycle of the chains 16 and 17 revolving around the revolving drive shaft 6 in the same manner as the rotating disc 12 is the same as the revolving cycle of the rotating disc 12.

The planetary sprocket 15 is one of the rotating disks 12
Since the planetary sprocket 15 rotates once in the reverse direction with respect to the rotating disk 12 for the revolution, the planetary sprocket 15 does not rotate in the apparatus system. That is, the rotation shaft 13 does not rotate.

The sun sprocket 14 can be fixed at an arbitrary rotation position by a motor for rotation (an inverter motor, a motor that can be completely stopped by inertia) 21. A chain 23 is hung on the sprocket 22 and the sun sprocket 14 of the output shaft of the rotation motor 21. Even if the revolution drive shaft 6 rotates, the sun sprocket 14 is stopped by the rotation motor 21 and does not rotate.

The rotation of the sun sprocket 14 is possible only when the output shaft of the rotation motor 21 is rotated. Since such a planetary means is a conventional means, further description will be omitted.

As shown in FIG. 1, four rotating shafts 1 for rotation are used.
Mounting frames 31A, 31B, 31C for attaching containers described below to 3A, 13B, 13C, 13D, respectively.
31D is fixedly mounted. Therefore,
The mounting frame 31 does not rotate. That is, as shown in FIG.
The upper and lower surfaces or the vertical direction UD of the mounting frame 31 are always upper and lower surfaces, respectively.

The mounting frame 31 is a rectangular parallelepiped box, and the rotating shaft 13 for rotation is connected to both end faces. A window 32 is opened for weight reduction. A partition 33 is provided at the center. As shown in FIG.
4 is provided so as to extend in the axial direction (the direction of the axis of the rotation shaft 13).

Two support portions 34 divided in the axial direction
A positioning dielectric 35 is formed on the upper surface side of. As shown in FIG. 5, the positioning dielectric 35 has guiding slopes 36a symmetrically formed on both sides. Guiding slope 36
a is a guide surface for guiding a container to be described later so as to be easily fitted into the mounting frame 31.

One mounting frame 31 has two containers 36.
Are fitted as shown in FIG. Container 36
Has a fitting member 37 on the bottom side, as shown in FIG. As shown in FIG. 8, the fitting member 37 has a concave surface 38 on the bottom surface side. The concave surface 38 matches the convex surface having the guiding slope 36a shown in FIG.

As shown in FIG. 6, the container 36 inserted into the mounting frame 31 is pressed down by the lid 39 and fixed to the mounting frame 31. Bolt holes are formed in both ends of the push lid 39. A screw hole 41 (FIG. 3) is provided on the upper surface side of the mounting frame 31 corresponding to the bolt through hole.

The container 36 can be firmly fixed to the mounting frame 31 by tightening the push lid 39 to the mounting frame 31 via the container 36 with the bolt 42. That is, the upper surface of the container 36 is pressed against the lower surface of the push lid 39.

The container 36 comprises a container body 42 and a container lid 43 as shown in FIG. Container lid 43
When the handle lever 44 on the side of the container lid 43 is tilted to the position indicated by the solid line, it is firmly fastened and fixed to the container body 42 by itself. The container body 42 has a rectangular flange 4
9 are formed.

A lever support member 51 for rotatably supporting the handle lever 44 is attached to the flange 49.
The rotation base of the handle lever 44 has a bulging portion that is asymmetric with respect to the rotation axis. When the handle lever 44 is tilted to the position shown by the chain line, the bulging portion
1 and the upper surface of the container lid 43 are sandwiched by a strong force, and the container lid is strongly pressed to the container main body 42.

When the container 36 is mounted on the polishing apparatus, the vertical direction is indicated by a double arrow 45. When the container 36 is detached from the polishing apparatus, the vertical direction is a double arrow 46.
Indicated by That is, when the container 36 is not attached to the polishing apparatus, the container lid 43 is located above the container main body 42. In the container 36, 6 of the internal space
A polishing medium (such as conventional sand for metal polishing, walnut powder, etc.) is placed so as to occupy a volume of about 0%.

9 and 10, the container lid 43 appears.
A fixing means for fixing the temple group T is fitted on the inner surface side of the container lid 43. This fixing means includes a temple tip side fixing base 54 for fixing the temple tip side T3 and a temple root side fixing base 55 for fixing the temple root side T1.

The temple tip fixing base 54 is divided into three parts, a center base 54A and left and right bases 54B, 54C.
It is composed of At the upper and lower ends of the central base 54A (the left and right ends in FIG. 10, and the upper and lower ends when the apparatus is mounted on the side surface polishing device for the spectacle frame), two columns 56 are erected.

A mounting member 57 is fixed at the upper end of each column by a nut or the like in the horizontal direction. One fixed body 59 is fastened and mounted between each one end of the two mounting members 57. The other fixed body 59 is fastened and mounted between the other ends of the two mounting members 57. The two fixed bodies 59 are parallel.

As shown in FIG. 10, two through holes 61 are formed in the temple distal end fixing base 54 in the horizontal direction. A positioning rod 62 is passed through the through hole 61. As shown in FIG. 11, the positioning rod 62 is passed through the central base 54A and the left and right bases 54B and 54C.

A screw hole (not visible) is provided in the center base 54A in parallel with the through hole 61. Bolt through holes 63 are coaxial with the screw holes, and
C is open. The central base 54A and the left and right bases 54B and 54C are integrated by tightening bolts through the bolt holes 63 from both sides into the screw holes.
As will be described later, a number of temples T
Is fixed to the temple distal-side fixing base 54.

FIG. 11 is a sectional view taken along line XI-XI of FIG. The center base 54A is the right (or right) side base 54C.
A raised portion 64 is formed at the end opposite to. A slope 64 a is formed in the raised portion 64. A raised portion 65 is formed at an end of the left base 54B facing the central base 54A.

An inclined surface 65 a is formed on the raised portion 65. A gap S is provided between the surfaces of the raised portion 64 and the raised portion 65 facing the central base 54A. An elastic plate (rubber plate) 66 is provided on one side between both surfaces forming such a gap S. The central base 54A also has a slope opposite to the slope 654a. The slope and the slope 65 facilitate the relative flow of the abrasive during polishing.

The central base 54A and the left and right bases 5 are bolted.
When 4B and 54C are fastened together and integrated, they are sandwiched between a raised portion 64 and a raised portion 65 which approach each other, and the tip end (round bar portion) of the temple T is tightened. The vertical vibration direction of the temple T is perpendicular to the plane of FIG.

The fixed body 59 of the temple root-side fixing base 55 is composed of both-side holding bodies 68 and 69, a center-side holding body 71, and a spacer 72. Center side holding body 71
Extend in the vertical direction (the direction when the device is mounted on the side surface polishing device of the spectacle frame). The center holding member 71 includes two holding plates 71a and 71b.

The two holding plates 71a and 71b are formed by bending a thin plate material, and the material is an elastic metal plate. The two holding plates 71a and 71b are opposed and substantially parallel.
The holding plates 71a and 71b are bent inside on the respective sides to form bent portions 73a and 73b. FIG.
FIG. 12 is a view of the holding plates 71a and 71b of FIG. 11 viewed in the direction of arrow a.

The bent portions 73a and 73b face each other. A gap 7 is provided between the opposite ends of the bent portions 73a and 73b.
4 are provided. The opposite end face of the bent portion 73a is formed in a rectangular uneven wavefront 75. The uneven wavefront 75
The concave side surface 75a and the convex side surface 75b are formed in a rectangular tooth shape. The opposite end face of the bent portion 73b is formed as a saw-toothed uneven wavefront 76. The saw-shaped uneven wavefront 76 is composed of a V-shaped concave surface 76a and an inverted V-shaped convex surface 76b.

The convex side surface 75b of the bent portion 73a and the convex surface 76b of the bent portion 73b have the same phase. That is, the convex side surface 75b of the bent portion 73a and the convex surface 76 of the bent portion 73b
b faces directly in front. The convex side surface 75a of the bent portion 73a and the concave surface 76a of the bent portion 73b have the same phase.

That is, the concave side surface 75a of the bent portion 73a and the concave surface 76a of the bent portion 73b face directly in front. A narrow slit 79 is opened at the center of the adjacent concave surface 76a, that is, at the center of the convex surface 76b. As shown in FIG. 11, the slit 79 is opened from the distal end surface of the convex surface 76b to a part of the holding plate 71b and is continuous.

One side T of the temple T indicated by a chain line
5 is fitted into the concave side surface 75a, and the other side surface T5 of the temple T is fitted into the concave surface 76a.

As shown in FIG. 11, the both-side holding members 68 and 69 are tightened with bolts 77 and nuts 78.
The bent part 73a and the bent part 73b, which were opened and closed,
When being clamped and clamped by the clamping body 68 and the clamping body 69, they approach each other, the width of the gap 74 shown in FIG. 12 is reduced, and the temple T is clamped between the concave side surface 75a and the concave surface 76a.

At the time of the pinching, the protruding portion formed between the adjacent slits 79 so as to protrude in a peninsula shape is slightly but freely deflected according to the variation in the shape of the outline of the temple T. Due to such a deflection, the saw-tooth uneven wavefront 7
The wavelength of 6 changes elastically freely, and all temples T
Is strongly pressed and held by the holding plates 71a and 71b.

A large number of temples T are inserted into a concave and convex wavy gap 74 formed by the holding plate 71a and the holding plate 71b. As shown in FIG. 12, the insertion depth is substantially
3a and 73b. Base T1 of temple T
The outer end faces (upper and lower faces, faces not on both sides) of the
2 is in contact with the inner surface.

The fixed body 59 can be removed from the support 56. Loosen the nut 78 to widen the width of the uneven wavy gap 74 formed by the holding plate 71a and the holding plate 71b,
Each end of the large number of temples T is inserted into the widened gap 74 and the nut 78 is tightened to assemble the fixed body 59 to which the large number of temples T are fixed.

Two such assemblies are assembled, and
The set is fixed to the column 56 via the mounting member 57. The other end of each of the multiple temples T of the fixed body 59 thus assembled is loosened with respect to the central base 54A.
C. When the central base 54A and the left and right bases 54B, 54C are tightened and integrated, as shown in FIG. 11, each tip T3 of a large number of temples T is raised between the raised portion 64 and the raised portion 65. 65
Is firmly tightened through.

At the time of such an assembling, the distal end half of the distal end portion T3 of the temple T is connected to the temple distal end fixing base 5.
4 protrudes outside. As shown in FIG. 10, the temple tip side fixing base 54 is attached to the container lid 43.
As shown in FIG. 7, the container body 4 placed on the worktable
2, the container lid 43 is placed from above with the temple root-side fixing base 55 facing downward.

When the handle lever 44 is turned down,
And the container lid 43 are integrated to assemble the container 36. At this time, the polishing medium having a volume of about 60% of the internal space is already sealed in the container 36. Since the polishing medium contains moisture, a packing is interposed between the container body 42 and the container lid 43.

In this assembled state, in FIG. 7, the side surface T5 of the intermediate portion T2 of the temple T is parallel to the drawing sheet, and a large number of temples T are arranged in the horizontal direction.
Therefore, in the polishing step, many temples T are arranged in the vertical direction, that is, in the vertical direction.

The two containers 36 assembled as shown in FIG. 7 are inserted into the integral mounting frame 31 shown in FIG. 3 from above, and as shown in FIG. And the container 36 is integrated with the mounting frame 31. FIG.
8, eight containers 36 are mounted on four mounting frames 31.

At the time of such mounting, both side surfaces T5 of the intermediate portion T2 of the temple T are substantially vertical. Many temples T are arranged in the vertical direction. One group of the parallel bodies of the temples T arranged in this manner is arranged in two rows in a direction perpendicular to the paper surface of FIG.

FIG. 13 shows the entire polishing apparatus. The upper portion 81 of the front casing opens with its lower edge rising upward. A control device 82 is provided on the side of the body frame. The control panel of the control device 82 includes a power switch 83, an input means 84 for a sequencer, an automatic / manual operation mode changeover switch 85, a manual switch 86 for jogging the revolution motor 5, and a jogging motor 21. A manual switch 87 and a start button 88 are provided. With the sequencer, the following combinations of the forward and reverse operation modes can be set from the input means 84. (1) Forward rotation / reverse rotation / vertical inversion / reverse rotation / forward rotation (2) Forward rotation / reverse rotation / vertical inversion / forward rotation / reverse rotation (3) Forward rotation / vertical inversion / forward rotation / vertical inversion / reverse rotation (4) forward Rotation / vertical reversal / reverse rotation / vertical reversal / reverse rotation The rotation speed of the revolving motor 5 can be input from the input means 84 to the sequencer. The upper portion 81 of the casing is opened, and the manual switch 86 is turned ON momentarily to guide one of the four mounting frames 31 to an intermediate position in the height direction, that is, a rotational position that requires the most trouble.

When the manual switch 87 is turned ON momentarily,
The vertically oriented mounting frame 31 is positioned substantially horizontally or at a gentle inclination angle desired by the operator. The lid 39 is removed, and the two prepared containers 36 are mounted on the mounting frame 31 as described above. The mounting frame 31 is returned to the original vertical direction. Similarly, the above-mentioned two inchings are performed, and the remaining six containers 36 are mounted on the other mounting frames 31,
Return to the original vertical orientation.

The upper part 81 of the casing is closed, and the mode is switched from the manual mode to the automatic mode by the switch 85. The forward / reverse operation mode has already been selected. The rotation speed of the revolution motor 5 is also set.

The start button 88 is pressed to drive the revolution motor 5. The four attachment frames 31 rotate at the same angular speed as the rotating disk 12 and the same body. Due to the planetary means, the four mounting frames 31 are always in the same posture, that is, in the vertical direction.

FIG. 14 is an oblique axis projection view for explaining the operation. At any of the positions a, b, c, and d, both side surfaces T5 of the temple T are vertical. At position a,
A horizontal centrifugal force acts on the polishing medium. FIG.
(A) shows the flow state of the polishing medium in the container 31 at the position a.

In the steady state in which the position d shifts to the position a, as shown in FIG. 15A, the polishing medium is floating inside the container. The outer part of the polishing medium that is subjected to centrifugal force,
It forms a meniscus and rises up the container wall, but does not flow horizontally in general. At position b, FIG.
As shown in (b), the polishing medium moves upward due to the inertia given at the position a, but the container wall is rapidly decelerated upward and gathers on the ceiling wall.

At the position c, as shown in FIG.
The polishing medium receives a constant gravitational acceleration at the position b, but the container has a low downward acceleration at the position b, and is in a state of being suspended in the air. From the position c, the acceleration of the container is reduced but the gravity is constant, so that the polishing medium perforated from the container is landed on the bottom wall.

The cycle ω of the vertical oscillation of the polishing medium is determined by four parameters: the rotational angular velocity, the radius of rotation, the volume ratio of the polishing medium, and the mass of the polishing medium per unit volume. The above described cycles shown in FIGS. 15A to 15D are examples. Changing the parameters can cause various other aspects of the cycle, but the cycles that occur during one or more revolutions include:
One cycle of the relative vertical vibration between the polishing member and the temple T is always included.

The polishing amount is determined by the relative speed and relative acceleration on the contact surface between the article to be polished and the polishing medium. Next, the relative acceleration that should occur on the contact surface between the workpiece and the polishing medium will be discussed. Relative acceleration α between the particles of the polishing medium located in contact with the side surface of the workpiece and the side surface
Is mathematically expressed by the following equation.

Α = g + Acos {ω (t−T)}. (1) ω: Rotational angular velocity A: Acceleration constant represented by radius of rotation and cycle t: Time g: Gravitational acceleration T: Delayed phase The acceleration represented by the second term on the right side of this equation is calculated from the vertical plane of the container wall. This is the average acceleration that the entire polishing medium receives due to viscous resistance. The constant T is a phase delay time. That is, when the upper and lower walls of the container are stopped in the vertical direction at the vertical position, a relative acceleration is generated, so that the delay phase ωT is approximately π /
4.

This relative acceleration is the maximum value of the polishing medium whose frictional resistance is determined by the pressure of the polishing medium, the viscous resistance of the polishing medium containing moisture, and the like. That is, the vertical frictional resistance between the polishing medium and the object to be polished is a value obtained by multiplying a value smaller than the acceleration represented by the above equation by a mass constant. The actual frictional resistance can be roughly expressed by a formula obtained by multiplying the above formula by a mass constant and a dimensionless constant. When the constant is represented by K, the actual frictional force F can be expressed by the following equation if the delay phase is ignored.

F = K {g + Acos (ωt)}. (2) FIGS. 16 and 17 show two examples of realistic relative speeds, respectively. 16 and 17 show the acting force of the polishing medium per unit volume acting on both side surfaces of the article to be polished. The gravity is represented as unit 1. In reality, the centrifugal force is one to three times the gravity. FIG. 16 shows the case where it is twice, and FIG. 17 shows the case where it is one time.

In order to increase the amplitude of the vibration motion in the vertical direction, the area indicated by oblique lines in FIG.
It is sufficient to apply a large centrifugal force and a large initial upward speed (a peripheral speed of the container at the position a, a speed that increases as the centrifugal force increases) in a section from the position to the position c.

As shown in FIG. 14, the polishing medium particles in contact with both side surfaces 101 of a large number of temples T lined up and down move periodically in a direction substantially perpendicular to the contact surface 101. Because it does not rotate with respect to the direction of gravity, that is, does not rotate about the horizontal axis, the fluid or fluid that is the abrasive medium does not convect the container in the container.

Therefore, the polishing medium does not enter the gap 102 between the articles to be polished which are vertically adjacent to each other. Little horizontal force acts on media that has already penetrated. The upper and lower surfaces 103 of the article to be polished are hardly polished as shown in FIG. However, the rounded portion 104 formed in advance on the ridge portion is subjected to a polishing action.

FIG. 19 shows both sides 101 of the article to be polished and upper and lower faces 103 which must not be polished.
Various cross-sectional examples are shown. FIG. 20 is a table showing the shapes of the upper and lower surfaces and both side surfaces. As shown in the table of FIG. 20, the upper and lower surfaces are not necessarily horizontal, and both sides are not necessarily vertical. 19 (a), (c), (d), (h),
It is desirable that the object to be polished having the cross-sectional shape shown in (i) and (j) be polished by turning it upside down. In particular, FIG.
It is desirable that the object to be polished having the cross-sectional shape shown in FIGS.

It is desirable that the polished product having the cross-sectional shape shown in FIGS. 19 (h) and 19 (i) be polished by a combination of normal rotation and reverse rotation. The article to be polished shown in FIG. 19 (k) has no upper and lower surfaces, so that polishing of the upper and lower surfaces is not necessary.

The object to be polished by the side surface polishing method according to the present invention is not limited to temples of eyeglasses. It covers a wide range of ornaments, such as the hands and sides of watches, metal fittings for necklaces and handbags.

[Brief description of the drawings]

FIG. 1 is a front view showing the inside of Embodiment 1 of a side surface polishing apparatus for decorative articles of the present invention.

FIG. 2 is a side view showing the inside of the first embodiment.

FIG. 3 is an oblique axis projection view showing a mounting frame 31 according to the first embodiment.

FIG. 4 is a plan view showing a mounting frame 31;

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a front view of a part of FIG. 1;

FIG. 7 is a front view showing the container 36. FIG.

FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 7;

FIG. 9 is a plan view showing a fixing unit.

FIG. 10 is a front view showing a fixing means.

FIG. 11 is a sectional view taken along line XI-XI in FIG. 9;

FIG. 12 is a plan view seen in the direction of arrow a in FIG. 11;

FIG. 13 is a front view showing the appearance of the polishing apparatus.

FIG. 14 is an oblique axis projection view for explaining the operation.

FIG. 15A, FIG. 15B, FIG. 15C, FIG.
FIG. 16 is a cross-sectional view showing a movement state of the polishing medium at each of positions a, b, c, and d in FIG. 15.

FIG. 16 is a graph showing acceleration.

FIG. 17 is a graph showing acceleration.

FIG. 18 is a cross-sectional view for explaining a polishing operation.

19 (a) to 19 (k) are cross-sectional views showing modified examples of the article to be polished.

FIG. 20 is a table showing the shape of a product to be polished;

FIGS. 21 (a), (b) and (c) are an oblique projection view, a side view, and a plan view showing an eyeglass temple to which the method for polishing a side surface of a decorative article according to the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... The grinding apparatus 5 ... Revolution motor 6 ... Revolution drive shaft 12 ... Rotating disk 13 ... Rotation rotation shaft 14 ... Sun sprocket 15 ... Planetary sprocket 19 ... Sprocket 21 ... Rotation motor 31 ... Mounting frame 36 ... Container 39 ... lid 42 ... container body 43 ... container lid 44 ... handle lever 54 ... temple tip side fixing base 55 ... temple root side fixing base 59 ... fixed body

Claims (11)

[Claims] The present invention relates to a method of polishing a side surface of a decorative article in which the upper and lower surfaces must not be polished or need not be polished, wherein the container containing the polishing medium is not rotated substantially. Revolving in a substantially vertical plane, fixing the decorative article in the container so that the upper and lower surfaces are oriented substantially horizontally, and the relative acceleration obtained by combining the vertical acceleration and gravity received by the polishing medium in the container. A method of polishing a side surface of a decorative article, comprising: bringing the polishing medium having a combined acceleration into contact with the side surface and polishing the side surface with the polishing medium. 2. The method of polishing a decorative article according to claim 1, wherein a large number of the decorative articles are vertically arranged, and a gap is provided between the vertically adjacent decorative articles. 3. The method according to claim 1, wherein the relative acceleration α is α = g + Acos (ωt), ω: angular velocity of rotation A: acceleration constant represented by radius of rotation and cycle t: time g: gravitational acceleration T: delay A side surface polishing method for a decorative article, characterized by being approximately represented by a phase. 4. The method for polishing a side surface of a decorative article according to claim 1, wherein the revolution is constituted by forward rotation and reverse rotation. 5. The method according to claim 4, wherein the upper and lower surfaces are inverted by inverting the container. 6. The method for polishing a side surface of a decorative article according to claim 5, wherein a combination of the two states of the normal and reverse rotations and the two states of the reversal are four different states. 7. A rotator rotating about a generally horizontal axis, a container mounted on the rotator and having a polishing medium therein, and an upper and lower surface of each of the plurality of decorative articles is oriented substantially horizontally. A decoration mounting means for fixing and mounting the decoration in the container; a planet for rotating the container so that the container revolves around the rotating body so that the container does not rotate. Means for polishing a side surface of a decorative article, comprising: 8. The decorative article mounting means according to claim 7, further comprising a fixing body for fixing the ornaments in a substantially vertical arrangement, wherein the fixing body forms a clamping surface sandwiching the side surface from both sides. A side surface polishing apparatus for a decorative article, comprising: a fixed body having an irregular shape, wherein the fixed body is a metal body having elasticity so that a wave interval of the uneven surface can be expanded and contracted. 9. An apparatus according to claim 8, wherein said fixed body is detachable from said container. 10. The decorative article side polishing apparatus according to claim 8, wherein the container is detachable from the rotating body, and the fixed body is detachable from the container. 11. The apparatus according to claim 10, wherein the rotation angle of the container with respect to the stopped rotating body can be changed.