JP2725729B2 - Ball polishing method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a ball polishing method.

[Prior Art] Conventionally, as shown in FIGS. 5 (a) and 5 (b), a polishing method for polishing a ball is known.

In the apparatus used in this polishing method, a disk-shaped upper plate 1 and a lower plate 2 are coaxially opposed to each other. And the upper plate 1
Each of the opposed surfaces 1a and 2a of the lower plate 2 is formed of a grinding wheel. The upper plate 1 is provided so as to be able to reciprocate in a direction (horizontal direction) orthogonal to the axis, and the lower plate 2 is provided so as to be rotatable around the axis. Further, a ring-shaped V-shaped groove 3 is formed on the facing surface 2a of the lower plate 2. On the other hand, on the side of the upper plate 1 and the lower plate 2, a working fluid supply device (not shown) is arranged to supply a working fluid between the two.

The polishing method for polishing the ball by the polishing apparatus having such a configuration is such that a ball 4 as a work and a buffer ball 5 for preventing generation of scratches due to collision between the balls 4 are provided in a V groove 3 of the lower plate 2. Arrange alternately. Thereafter, the upper plate 1 is lowered until the upper plate 1 contacts the ball 4. And the upper plate 1
While the machining liquid is being supplied between the lower plate 2 and the lower plate 2, the lower plate 2 is rotated, and a load is applied to the upper plate 1 to reciprocate in the horizontal direction to polish the ball 4.

[Problems to be Solved by the Invention] However, in the conventional ball polishing method, the ball 4
Must be arranged over the entire circumference of the V-groove 3, and a large number of balls 4 must be machined by a single polishing operation.

The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a ball polishing method that can easily and efficiently polish a large number of small balls.

[Means for Solving the Problems] In order to achieve the above object, the present invention relates to a method of arranging at least two cylindrical rollers, one of which is made of a polisher or a grinding wheel, in proximity to each other, and grinding the balls with the rollers. In the polishing method, a step of interposing a ball by contacting between the cylindrical rollers, a step of supplying a slurry or a working fluid to a contact portion between the roller and the ball, and rotating at least one roller about an axis. And grinding the ball by moving at least one roller in the axial direction.

Also, in a ball polishing method in which at least two rollers, one of which is a polisher or a grinding wheel, are arranged in close proximity to each other, a plurality of independent grooves formed in at least one roller and another roller are provided. A step of interposing a ball by contacting between the two, a step of supplying a slurry or a working fluid to a contact portion between the roller and the ball, and rotating at least one roller about the axis and rotating at least one roller about the axis. Moving and polishing the ball.

In the present invention, when the roller is a polisher (polishing dish), a slurry which is a turbid liquid of abrasive grains and a processing liquid is used as a polishing liquid, and when the roller is a polishing wheel, the processing liquid is polished. It is generally used as a liquid,
It is not limited to these combinations depending on the degree of polishing.

Further, the two rollers are not limited to the case where the axes are arranged in parallel, and the roller axes may be obliquely arranged so that the distance between the rollers increases sequentially in accordance with the combination of the ball diameters.

FIG. 1 is a conceptual diagram showing a ball polishing method according to the present invention, in which two cylindrical rollers 6, 7 are closely arranged such that their axes 6a, 7a are parallel and horizontally displaced. Have been. At least one of the rollers 6, 7 is made of a polisher or a grinding wheel. Then, the ball 4 is polished by rotating at least one of the rollers 6 and 7 while supplying a slurry or a working liquid while bringing the ball 4 into contact with the rollers 6 and 7. In FIG. 1, polishing is performed while rotating both rollers 6 and 7 in the same direction and reciprocating the upper roller 6 in the axial direction.

[Operation] According to the ball polishing method having the above structure, the ball 4 rolls between the rollers 6 and 7 and is polished by the rollers 6 and 7 and a polishing liquid (slurry or working liquid). Ball 4
May be used simultaneously, and it is not necessary to grind a large number of them at the same time.

Embodiment 1 First Embodiment FIGS. 2 (a) and 2 (b) show an embodiment of a ball polishing apparatus used for carrying out the method of the present invention. 9 are placed. Frame 9
Has two cylindrical rollers 10 and 11 rotatably mounted thereon, a driving device 12 for rotating these rollers 10 and 11, and a polishing liquid (a processing liquid in this embodiment) on the surfaces of the rollers 10 and 11. And a polishing liquid supply device 13 for supplying the same.

Each of the rollers 10, 11 has a surface formed of a grinding wheel, and is rotatably mounted on the frame 9 via a bearing 14 by roller shafts 10a, 11a. The roller shafts 10a and 11a are arranged in parallel with a shift in the horizontal direction, and the two rollers 10 and 11 are arranged close to each other with a slight gap so that the surfaces do not contact each other. On the surface of the lower roller 11, a plurality of grooves 15 having a semicircular cross section are formed obliquely to the roller axis. Each groove 15 is formed independently.

On the other hand, as the drive device 12, the frame 9 includes a motor 16
Is fixed, and a pulley 17 is fixed to the tip of the motor shaft 16a. Also, the roller shafts 10a, 1 of the rollers 10, 11
Pulleys 18 and 19 are fixed to one end of 1a, respectively, and belts 20 and 21 are respectively wound around the pulleys 18 and 19 and the pulley 17 by an open belt.

The polishing liquid supply device 13 supplies a polishing liquid to the surface of the rollers 10 and 11 and a tank 22 for storing the polishing liquid fixed to the frame 9, a pump 23 for sucking the polishing liquid from the tank 22. A polishing liquid supply nozzle 24 is provided. The tip of the polishing liquid supply nozzle 24 extends above the rollers 10 and 11, and a plurality of discharge ports 25 are formed near the tip. A processing liquid (polishing liquid) 26 is supplied from the discharge port 25 to the roller 10,
Supplied on 11.

In order to polish a ball with the polishing apparatus having such a configuration, the ball 4 is placed in a groove 15 provided in the lower roller 11 so as to be in contact with both rollers 10, 11. Then, the processing liquid 26 is supplied to the surfaces of the rollers 10 and 11 by driving the pump 23, and the motor 16 is driven to pull the pulleys 17, 18, 1
9. Both rollers 10, 11 are driven to rotate in the same direction via belts 20, 21, and the like. As a result, the ball 4 reciprocates along the roller shafts 10a and 11a while being guided by the groove 15,
It rolls between the rollers 10 and 11 and is polished.

According to the present embodiment, it is suitable for polishing a small amount of balls 4, and in particular, by changing the size of the groove 15, it is possible to simultaneously and efficiently polish various kinds of small amounts of balls 4 having different diameters. it can.

(Second Embodiment) FIG. 3 shows a second embodiment of the method of the present invention, and is a schematic perspective view showing a main part of a polishing apparatus used for carrying out the method, which is similar to the first embodiment. Then, each roller 27, 28
Each surface is formed by a grinding wheel. Also,
The roller shafts 27a and 28a are arranged in parallel so as to be shifted from each other in the horizontal direction, and the two rollers 27 and 28 are arranged close to each other with a slight gap so that the surfaces do not contact each other. Further, flanges 29 are formed at both ends of the lower roller 28 to prevent the balls 4 from scattering.

In order to polish the ball 4 with a polishing apparatus having the rollers 27 and 28 having such a configuration, the ball 4 is
Cushioning ball 5 that is placed so as to be in contact with
Between the balls 4. Then, while supplying the processing liquid to the processing section, the two rollers 27, 28 are rotated in the same direction, and the upper roller 27 is reciprocated in the direction of the roller shaft 27a to perform the polishing.

This embodiment is also suitable for polishing a small amount of balls 4, and can easily and efficiently polish various small amounts of balls 4 having different diameters.

Third Embodiment FIG. 4 shows a third embodiment of the present invention, and is a schematic perspective view showing a main part of a polishing apparatus used for carrying out the method.
In the same manner as in the first embodiment, each of the rollers 30, 31 has a surface formed of a grinding wheel. Further, the roller shafts 30a and 31a are arranged so as to be parallel and displaced in the horizontal direction, and the two rollers 30 and 31 are arranged close to each other with a slight gap so that the surfaces do not contact each other.
A groove having a semicircular cross section is formed on the surface of the lower roller 31.
A plurality of 32 are formed at right angles to the roller shaft 31a.
Each groove 32 is formed independently.

In order to polish the ball 4 with a polishing apparatus having the rollers 30 and 31 having such a configuration, the ball 4 is
And is placed in a groove 32 provided in the lower roller 31 so as to contact the roller. Then, while supplying the processing liquid to the processing section, both rollers
Rotate 30, 31 in the same direction and
Polishing is performed by reciprocating the roller 30 in the direction of the roller shaft 30a.

This embodiment is also suitable for polishing a small amount of balls 4 as in the first embodiment. In particular, by changing the size of the groove 32, various kinds of small amounts of balls 4 having different diameters can be simultaneously and simply obtained. Polishing can be performed efficiently.

In each of the above embodiments, the roller and the polishing liquid were used.
Although the combination of the grinding wheel and the working fluid is used, the present invention is not limited to this embodiment, and may be, for example, a combination of a polisher and a slurry. Further, the cross-sectional shape of the grooves 15, 32 is not limited to a semicircular shape, and may be a V-shaped or U-shaped.

[Effect of the Invention] As described above, according to the ball polishing method of the present invention,
Since the balls 4 are brought into contact with the two rollers, at least one of which is made of a polisher or a grinding wheel, the balls 4 are brought into contact with each other, so that a large number of small balls can be easily and efficiently polished.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a ball polishing method of the present invention,
2 (a) and 2 (b) are a side view and a partially cutaway front view, respectively, showing a first embodiment of an apparatus used in the ball polishing method of the present invention, and FIG. 3 is a second embodiment of the present invention. FIG. 4 is a schematic perspective view showing a main part for explaining a third embodiment of the present invention, and FIGS. 5 (a) and (b) are conventional grinding of a ball. It is a partially broken plan view and a front view showing a polishing device used in the method. 4 Ball 6 7, 10, 11, 27, 28, 30, 31 Roller 12 Driving device 13 Polishing liquid supply device 26 Processing fluid

Claims (2)

(57) [Claims] 1. A ball polishing method in which at least two cylindrical rollers, one of which is a polisher or a grinding wheel, are arranged close to each other, and the balls are polished by the rollers. Interposing, a step of supplying a slurry or a working liquid to a contact portion between the roller and the ball, and grinding the ball by rotating at least one roller in the axial direction and rotating at least one roller in the axial direction. A ball polishing method, comprising the steps of: 2. A method of polishing a ball, comprising: arranging at least two rollers made of one polisher or a grinding wheel in close proximity to each other, wherein the plurality of independent grooves formed in the at least one roller and the other are formed. A step of interposing a ball in contact with a roller, a step of supplying a slurry or a working liquid to a contact portion between the roller and the ball, and a step of rotating at least one roller around an axis and rotating at least one roller. Polishing the ball by moving the ball in the axial direction.