JP4159751B2 - Sphere processing method and jig used in the method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for performing spherical polishing of a spherical workpiece and a jig used in the method.
[0002]
[Prior art]
For example, in polishing of ferrimagnetic single crystal spheres such as YIG (yttrium iron garnet) spheres used in magnetic resonators, the material must be hard and brittle and processing strain must not remain. Therefore, a method of performing spherical polishing using a polishing disk is employed.
FIG. 3 shows a configuration in which a flat polishing machine is used as a conventional example of polishing of such a spherical workpiece.
[0003]
A guide ring 12 mounted on the periphery of a polishing disk (lower polishing disk) 11 has a cylindrical shape, and an outer peripheral surface thereof is supported by a support arm 13. The support arm 13 includes an arm portion 13a extended from a housing (not shown), an arc-shaped support portion 13b attached to the tip thereof, and bearings 13c attached to both ends of the support portion 13b. 13 c is in contact with the outer peripheral surface of the guide ring 12.
The guide ring 12 is supported by such a support arm 13 so as to be freely rotatable (rotatable) on the polishing disk 11, and the polishing disk so as not to move in the rotating direction as the polishing disk 11 rotates. 11 movement in the circumferential direction is restricted.
[0004]
A disc-shaped carrier 14 and an upper polishing disc (load disc) 15 are accommodated in the guide ring 12. For example, six accommodation holes 14a are formed at equiangular intervals on the circumference of the carrier 14, and workpieces 16 to be polished are movably disposed in the accommodation holes 14a. The upper polishing disk 15 is loaded on these workpieces 16, and a necessary load is applied to each workpiece 16 by the upper polishing disk 15.
In the planar polishing machine having the above-described configuration, when the polishing plate 11 is rotated, the carrier 14 holding the guide ring 12 and the workpiece 16 is rotated (rotated) on the polishing plate 11 by the acting peripheral speed difference. Since the workpiece 16 moves while rolling in a state sandwiched between the polishing disc 11 and the upper polishing disc 15, the surface thereof is polished. At this time, the support arm 13 is appropriately reciprocated as indicated by an arrow 17. In the figure, reference numeral 18 denotes a rotating shaft for rotating the polishing board 11.
[0005]
[Problems to be solved by the invention]
By the way, in the polishing process using the planar polishing machine as described above, since the spherical workpiece 16 is supported at two points by the polishing disk 11 and the upper polishing disk 15, the polishing process proceeds. Accordingly, there is a problem that the workpiece 16 tends to have a shape like a so-called triangular rice ball, and a sphere with good sphericity cannot be obtained. On the other hand, in the polishing process, there is a method of using a V polishing machine having a configuration as shown in FIG.
[0006]
In this V polishing machine, an upper polishing disk 21 and a lower polishing disk 22 called a so-called V polishing disk are arranged so as to face each other. The lower polishing disk 22 has V grooves 23 on the circumference of the opposing surface. Is formed.
The upper polishing disk 21 and the lower polishing disk 22 are attached to and supported by rotating shafts 24 and 25, respectively, and the upper polishing disk 21 and the rotating shaft 24 are movable in the vertical direction, for example, and a required load is applied. It has a structure that can be added.
In this V polishing machine, the required number of workpieces 16 are arranged in the V-groove 23, the upper polishing disc 21 is brought into contact with the workpiece 16, and a load is applied to the upper polishing disc 21 and the lower polishing disc. 22 is rotated in the opposite direction, for example, and the workpiece 16 moves while rolling on the V-groove 23, whereby the workpiece 16 is polished. At this time, the workpiece 16 is Since the structure is supported at three points, a sphere with good sphericity can be obtained.
[0007]
In this way, if a V grinder is used, a sphere with good sphericity can be obtained, but for that purpose, a new V grinder must be introduced, which introduces a large burden due to the introduction cost. It was.
In view of this problem, an object of the present invention is to provide a sphere processing method in which a sphere having a good sphericity can be obtained by using a general-purpose plane polishing machine without newly introducing a V polishing machine. And providing a jig used in the method.
[0008]
[Means for Solving the Problems]
According to the invention of claim 1, a plurality of spherical workpieces are arranged in the V groove of the V polishing disk in which V grooves are formed on the circumference, and the upper polishing disk is loaded on the workpieces. In addition, in a processing method of performing spherical polishing of a workpiece by rotating the V polishing disk relative to the polishing disk, the V polishing disk is attached and fixed to the bottom surface of the cylindrical guide ring, and the guide ring Is mounted on the periphery of a polishing disk of a surface polishing machine by regulating the circumferential movement thereof, and rotating the polishing disk to perform the spherical polishing by the peripheral speed difference acting on the V polishing disk. The above-mentioned rotation of the V polishing machine is obtained.
[0009]
According to the second aspect of the present invention, the circumferential movement of the surface polishing machine is restricted by the support arm, and is rotatably supported and mounted on the circumference of the rotating polishing machine of the flat surface polishing machine, and acts by the rotation of the polishing machine. The jig that is structured to rotate on the polishing disk due to the difference in peripheral speed consists of a cylindrical guide ring and a V polishing disk that is fixedly attached to the bottom surface of the guide ring. And V-grooves formed on the circumference.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a sectional view showing the structure of an embodiment of a ball processing jig according to the present invention. In this example, the jig 31 includes a cylindrical guide ring 32 and a V polishing disk 33 attached and fixed to the guide ring 32.
The V-polishing disc 33 has a V-groove 34 formed on the circumference, and the surface on which the V-groove 34 is formed is the inner surface side, and is attached to the bottom surface of the guide ring 32 so as to cover the opening. Yes.
[0011]
As in the case of the guide ring 12 in FIG. 3, the jig 31 configured as described above has its circumferential movement restricted by the support arm on the periphery of the polishing machine of the surface polishing machine, and is rotatable (autorotated). It is supposed to be supported and mounted.
FIG. 2A shows a state in which the jig 31 is mounted on the periphery of a polishing machine of a plane polishing machine, and parts corresponding to those in FIG.
When the polishing plate 11 is rotated, the jig 31 supported by the support arm 13 rotates on the polishing plate 11 due to the peripheral speed difference acting on the V polishing plate 33. Accordingly, by arranging the required number of spherical workpieces 16 to be polished in the V-groove 34 as shown in FIG. 2B, and loading the upper polishing board 15 on these workpieces 16 and applying the required load. Then, spherical polishing of the workpiece 16 is performed.
[0012]
Since the workpiece 16 is supported at three points by the V-groove 34 and the upper polishing board 15, a sphere having a good sphericity can be obtained, that is, by adopting such a processing method, surface polishing is performed. This makes it possible to perform spherical polishing of the spherical workpiece 16 with good sphericity.
In FIG. 2A, reference numeral 35 denotes a polishing liquid supply pipe fixed to the support arm 13, and the polishing liquid is supplied into the jig 31 through the polishing liquid supply pipe 35. The V polishing disk 33 rotates relatively well with respect to the upper polishing disk 15 so that the workpiece 16 rolls well on the V groove 34, that is, the upper polishing disk 15 rotates the V polishing disk 33. The upper polishing board 15 is preferably fixed so as not to rotate in conjunction with the rotation. Although not shown in the figure, the fixing can be performed using the support arm 13.
[0013]
【The invention's effect】
As described above, according to the sphere processing method according to the present invention, spherical polishing of a spherical workpiece can be performed with good sphericity by using a general-purpose surface polishing machine without newly introducing a V polishing machine. It can be carried out.
Further, according to the sphere processing jig according to the present invention, the spherical polishing using the above-described flat polishing machine can be easily performed.
[Brief description of the drawings]
FIG. 1 is a sectional view showing an embodiment of a ball processing jig according to the present invention.
FIG. 2 is a view for explaining a ball processing method according to the present invention.
FIG. 3 is a view for explaining a conventional sphere processing method using a plane polishing machine.
FIG. 4 is a view for explaining a conventional sphere processing method using a V polishing machine.

Claims (2)

A plurality of spherical workpieces are arranged in the V-groove of a V-polishing machine in which V-grooves are formed on the circumference, and an upper polishing machine is loaded on these workpieces, and V-polishing is performed on the upper grinding machine. A processing method for performing spherical polishing of a workpiece by relatively rotating a board,
Attach and fix the above V grinding machine to the bottom of the cylindrical guide ring,
The guide ring is mounted on the circumference of the polishing machine of the surface polishing machine, with its circumferential movement restricted.
A sphere processing method characterized in that the rotation of the V polishing disk for performing the spherical polishing is obtained by rotating the polishing disk by a peripheral speed difference acting on the V polishing disk. The circumferential movement of the surface grinder is controlled by the support arm and supported by the support arm so that it can rotate freely. A jig having a rotating structure,
A cylindrical guide ring;
It consists of a V grinding machine attached and fixed to the bottom of the guide ring,
The V-grinding machine has a V-groove formed on the circumference on the inner surface side thereof.

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