JP2001179598A - Polishing vessel of magnetic polishing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polishing vessel for improving polishing efficiency in a magnetic polishing machine. SOLUTION: An auxiliary piece 15 extending in the height direction is disposed at a position away from the central point P on the bottom surface of the polishing vessel 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polishing vessel in a magnetic polishing machine suitable for polishing components such as extremely small screws made of non-magnetized material.

[0002]

2. Description of the Related Art Conventionally, components such as extremely small screws made of non-magnetized material, such as aluminum screws for a mobile phone case or brass terminals of a connector for an electronic circuit, are small components made of non-magnetized material. A magnetic polisher capable of polishing a large amount at a time is known from, for example, JP-A-3-161267.

[0003] The above-mentioned known magnetic polisher comprises an S pole zone and an N pole in a circumferential direction defined by radiation on a disk surface.
The pole zones are alternately arranged, and a fixed plate made of a non-magnetized material is provided on the upper portion of the magnet disk horizontally rotated by the motor with a small interval therebetween. A polishing container made of synthetic resin is fixed, and a magnetized pin-shaped abrasive and a small part to be polished (hereinafter referred to as an object to be polished) are stored together with the polishing liquid in the polishing container. By rotating the magnet disk at a high speed by a motor, the abrasive is turned along the bottom surface of the polishing container, and in the turning process, the object to be polished is polished by a contact action with the abrasive.

As an abrasive, a diameter of 0.2 to 0.8 m is used.
m, magnetized stainless steel having a length of 1 to 7 mm. Nickel copper, chromium copper, or the like is used. Small parts made of non-magnetized material such as brass or hard synthetic resin are targeted.

[0005] When the magnet disk is rotated at a high speed by the motor, the abrasive rotates along the bottom surface of the polishing container in the rotating direction of the magnet disk along with the rotation due to the magnetic action with the magnet disk. In the turning process, the abrasives also move intricately while repeating adsorption and repulsion. Further, the abrasives come into complicated contact with the object to be polished in conjunction with the circulation of the polishing liquid generated by the turning of the abrasives. Due to the contact action, fine burrs and the like are removed from the material to be polished, and the surface is polished to be glossy.

[0006] In the above, when the magnet disk rotates at high speed, the abrasive and the object to be polished are moved from the center of the bottom surface of the polishing container in the circumferential direction by the action of centrifugal force, and are polished near the peripheral side of the polishing container. The liquid, the abrasive and the object to be polished swirl vigorously. On the other hand, in the center of the bottom surface of the polishing container, the water flow is swirled, and the abrasive and the object to be polished are almost stopped, and the amount of the abrasive and the object to be polished existing in the central part is reduced. Therefore, there is a disadvantage that the polishing action is hardly performed.

Therefore, conventionally, in order to improve the polishing effect, a cylindrical auxiliary part is provided at the center of the bottom surface of the polishing container so that the abrasive and the object to be polished do not stay at the center of the bottom surface of the polishing container. There exists a thing of the composition.

[0008]

According to this configuration, the retention of the abrasive and the object to be polished in the central portion of the polishing container can be eliminated by the auxiliary piece, and therefore, even at the outer periphery of the auxiliary piece. A swirling flow of the abrasive can be obtained, and the polishing effect can be improved.

However, the swirling flow of the abrasive and the polishing liquid in the polishing container caused by the high-speed rotation of the magnet disk is formed concentrically because both the polishing container and the auxiliary part are perfectly circular in plan view. You. That is, since the swirling flow of the polishing material and the polishing liquid becomes a perfect circle, the movement of the polishing material in the diameter direction of the polishing container is small, and therefore, the object to be polished is mainly polished in the flow of the polishing material in the turning direction. Will be.

[0010] In view of the above, the present application breaks the perfectly circular swirling flow of the polishing liquid and the abrasive so that the movement of the abrasive can also occur in the diametrical direction, so that the abrasive can move with respect to the object to be polished. The purpose is to remarkably improve the polishing effect by expanding the contact action.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a magnetic disk which is arranged with S-pole zones and N-pole zones alternately on the surface of a disk and which is rotated at a high speed by a motor. Through a fixing plate made of a magnetized material, a polishing container made of a non-magnetized material is fixed, and a polishing object and a polishing liquid made of a magnetized abrasive and a non-magnetized material are stored in the polishing container, respectively. By rotating the magnet disk, the abrasive is swirled along the bottom surface of the polishing container, so that the polishing container in the magnetic polishing machine configured to polish the object to be polished is located at a position deviated from the center point of the bottom surface of the container. And an auxiliary part extending in the height direction is provided.

In addition, the present invention is based on the assumption that an S pole zone and an N
On the upper part of the magnet disk that rotates at high speed by a motor with alternating pole zones, via a fixed plate made of non-magnetized material,
A polishing container made of a non-magnetized material is fixed, and a polishing object and a polishing liquid made of a magnetized abrasive and a non-magnetic material are stored in the polishing container, and the polishing material is rotated by rotating the magnet disk. In a polishing container in a magnetic polishing machine configured to polish an object to be polished by turning along a bottom surface of the polishing container, an auxiliary portion extending in a height direction is provided at least at two positions separated from the bottom surface of the polishing container. It is characterized in that each piece is provided.

In the above, preferably, the polishing container and the auxiliary piece are integrally formed of a synthetic resin.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a main part of a magnetic polisher, which is partially cut away. A motor 1 driven by a commercial power supply is not shown in the drawing, but as shown in Japanese Patent Application Laid-Open No. 3-161267, A magnet disk 2 having S-pole zones and N-pole zones arranged alternately is connected to the surface of a disk divided in the circumferential direction by a connecting mechanism 3.

A fixed plate 5 made of a non-magnetized material is provided on the upper portion of the magnet disk 2 with a small space 4 therebetween, and the periphery of the upper surface thereof is a cylindrical support made of a non-magnetized material, preferably an elastic material. A piece 6 is provided, which forms a polishing container charging portion 7 on the fixed plate 5.

A polishing container 8 made of a non-magnetized material and made of, for example, a synthetic resin is detachably accommodated in the polishing container charging section 7.

When the polishing container 8 is housed in the polishing container loading portion 7, a locking piece 9 protruding from the upper peripheral edge of the polishing container 8 is fixed to the support portion so as to be fixed in the circumferential direction. It is locked in a locking recess 10 provided on the upper surface of the piece 6. Polishing container 8
Is provided with a lid 11.

In the magnetic polisher constructed as described above, the polishing vessel 8 has a diameter of 0.2 to 0.8 mm and a length of 1 mm.
A number of pin-shaped abrasives having a size of about 7 mm, such as magnetized stainless steel, nickel copper, chromium copper, etc., and aluminum stopper screws made of a non-magnetized material, for example, a case for a cellular phone or a connector for an electronic circuit. A large number of objects to be polished, such as brass terminals, are stored together with the polishing liquid,
When the motor 1 is rotated at a high speed in these stored states, the abrasive material is caused by the magnetic action with the magnet disk 2 as the motor 1 rotates.
This is basically the same as the conventional structure in that the magnet disk 2 is rotated along the bottom surface in the polishing container 8 in the rotation direction, and the object to be polished is crushed by an abutting action of the abrasive and the object to be polished in the turning process. There is no difference.

The present invention relates to a polishing container 8 having the above-described configuration.
As shown in FIG. 2, an auxiliary part 15 made of a non-magnetized material and extending in the height direction is provided at a position deviated from the center point P of the bottom surface.

The auxiliary piece 15 is cylindrical and formed separately from the polishing container 8 and may be fixed to the bottom surface of the polishing container 8. When it is made of resin, it is provided by integral molding.

As described above, when the auxiliary piece 15 is provided on the bottom surface of the polishing container 8 at a position deviated from the center point P, the swirling flow of the abrasive generated by the high-speed rotation of the magnet disk 2, that is, the magnet disk 2 Due to the centrifugal force caused by the high-speed rotation of the abrasive disk, the abrasive material concentrically turns in the rotation direction of the magnet disk 2 while moving toward the peripheral wall of the polishing container 8, and the concentric swirl flow In the above, the swirling flow is disturbed by abutting with the auxiliary piece 15, and the abrasive is once diverted at the position of the auxiliary piece 15 as shown by the arrow in FIG. Form.

The manner in which the abrasive is divided and merged is the same for the object to be polished and the polishing liquid contained in the polishing container 8. As a result, the abrasive and the object to be polished near the auxiliary piece 15. Can perform an extremely complicated contact operation to significantly improve the polishing effect.

FIG. 4 shows that auxiliary parts 16a and 16b are separated at two positions on the bottom surface of the polishing vessel 8 in order to further complicate the swirling flow of the abrasive, the object to be polished and the polishing liquid. According to this configuration, one part of the swirling flow split by one auxiliary part 16a is replaced with the other auxiliary part 16b as shown by an arrow in the drawing. To form a more complex swirl flow, which also takes place between the auxiliary pieces 16a and 16b,
The polishing material and the object to be polished come into more complicated contact, and the polishing effect can be further improved.

In the above embodiment, the auxiliary pieces 15, 16a, 1
Although the case where each of 6b is a perfect circular shape in plan view is illustrated,
The shape is not limited to the above, but is shown in FIG.
As shown in (a) to (d) above, round non-circular objects such as egg-shaped, rounded square, rounded triangular or elliptical ones Is also effective.

The above-described embodiment exemplifies a case where one or two auxiliary parts 15 to 16a and 16b are provided on the bottom surface of the polishing container 8, and the number of auxiliary parts is not limited thereto. Although the swirl flow becomes more complicated when the number of auxiliary pieces is increased, the storage amount of the abrasive and the pressure object to be polished is increased when the number of auxiliary pieces is increased. Inconveniences such as reduction, inferior current of swirl flow,
Therefore, the number of auxiliary pieces is limited by itself in relation to the size of the grinding vessel and the working efficiency.

[0026]

As described above, according to the present invention, the presence of the auxiliary piece complicates the swirling flow accompanying the rotation of the magnet disk and increases the contact action of the abrasive with the object to be polished. Polishing efficiency can be improved.

In particular, according to the second aspect of the invention, the swirling flow can be made more complicated, and the polishing efficiency can be further improved.

According to the third aspect of the present invention, there is an advantage that the auxiliary part can be formed integrally with the polishing container, which is convenient for manufacturing.

[Brief description of the drawings]

FIG. 1 is a side view showing a main part of a magnetic polishing machine with a part cut away.

FIG. 2 is a plan view of a polishing container.

FIG. 3 is a sectional view taken along line II of FIG. 2;

FIG. 4 is another plan view of the polishing container.

FIG. 5 is a diagram showing a planar shape of an auxiliary piece;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Motor 2 Magnet disk 4 Fixing plate 6 Support piece 8 Polishing container 15, 16a, 16b Auxiliary piece

Claims (3)

[Claims] 1. Polishing made of non-magnetized material via a fixed plate made of non-magnetized material above a magnet disk rotated at high speed by a motor by alternately arranging S-pole zones and N-pole zones on the surface of the disc. The container is fixed, and the object to be polished comprising a magnetized abrasive and a non-magnetized material and a polishing liquid are stored in the polishing container, and the abrasive is moved along the bottom surface of the polishing container by rotation of the magnet disk. In the polishing container of the magnetic polishing machine configured to polish an object to be polished by turning, an auxiliary piece extending in the height direction is provided at a position deviated from a center point of a bottom surface of the polishing container. Polishing vessel in magnetic polishing machine 2. Polishing made of non-magnetized material via a fixed plate made of non-magnetized material, above a magnet disk rotated at high speed by a motor with S-pole zones and N-pole zones alternately arranged on the surface of the disc. The container is fixed, and the object to be polished comprising a magnetized abrasive and a non-magnetized material and a polishing liquid are stored in the polishing container, and the abrasive is moved along the bottom surface of the polishing container by rotation of the magnet disk. In a polishing container in a magnetic polishing machine configured to polish an object to be polished by turning,
At least two distant positions on the bottom surface of the polishing container,
A polishing container in a magnetic polishing machine, wherein auxiliary members extending in a height direction are provided. 3. A polishing container in a magnetic polishing machine according to claim 1, wherein the polishing container and the auxiliary member are integrally formed of synthetic resin.