JP2008114301A - Tilting type magnetic abrasive finishing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a magnetic abrasive finishing machine, capable of polishing a large quantity of subject material, or tall subject material at a time by more highly splashing magnetic pieces, so as to enlarge a range of applicable subject material. <P>SOLUTION: On the surface of a disc comprising non-magnetic material, N-pole zones and S-pole zones are alternately provided. On the N-pole zones, permanent magnets are embedded, putting the N-pole upward, and on the S-pole zones, permanent magnets are embedded to put the S-pole upward. A magnet disc is thus provided to rotate at high speed. Above the disc, a container including the subject material and the polishing pieces is provided at a closest possible distance to the disc without getting in contact with it in the magnetic abrasive finishing machine. A center line through a first motor to rotate the magnetic disc, the magnetic disc, and the container is inclined to a perpendicular line by 10-40 deg., and at least one rotor is provided on a lower side surface of the inclined container to be rotated by a second motor. The rotor rotates the container in the opposite direction to the rotation direction of the magnetic disc. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an inclined magnetic polishing machine for improving a magnetic polishing machine, expanding a polishing area in a polishing container, and efficiently polishing a large amount of a large-sized or upper-back workpiece.

  The magnetic polishing machine is a polishing machine of the type disclosed in Patent Document 1. As shown in FIG. 4, a container provided as close as possible without contact with the magnet disk by rotating a magnet disk in which N-pole zones and S-pole zones are alternately arranged at high speed, as shown in FIG. The small magnetic piece jumps violently while rotating, and can be polished without changing the shape of fine irregularities of the material to be polished. In many cases, the container is charged with a surfactant solution or a polishing aid solution.

  The magnetic piece is a pin-shaped stainless steel rod having weak magnetism. This magnetic piece is pulled by the N pole (or S pole) formed by the magnet disk, and the S pole (or N pole) pin tip is pulled to the bottom surface and stands up, and then approaches the S pole zone (or N It falls in the direction of the magnetic field in the polar zone) and then rises up inverted by the magnetic field of the south pole. When a container filled with a large number of magnetic pieces and a material to be polished is mounted and the magnet disk is rotated, each of the large number of magnetic pieces rotates and jumps violently. It can polish without deforming unevenness.

  However, in the magnetic polishing machine, the range in which the magnetic piece rotates vigorously is the range affected by the fluctuating strong magnetic field, in reality, around 10 cm from the bottom of the container, and the polishing efficiency becomes worse beyond that. Therefore, there is only a method of polishing the material to be polished having a height of 10 cm or more by inverting it upside down twice. In the case of an object to be polished having a height of 20 cm or more, the limit of the function of the magnetic polishing machine is reached. Further, as the rotational speed of the magnet disk increases, the movement of the magnetic piece becomes more intense, but the limit is about 3000 rpm, and the upper limit of the height at which the magnetic piece jumps even if the rotational speed is further increased.

Since the magnetic polishing machine is processed in a fixed container, the present inventors have disclosed Patent Document 2 in order to polish a long object to be polished that does not enter the container. This is achieved by supporting the magnet disk and rotary motor on the base 3, rotating the pinion separately by a swinging motor, and swinging the base back and forth or left and right by moving relative to the rack engaged with the pinion. A rail is provided on the frame, and a slider provided at the lower end of the base straddles and swings on the rail.
Although Patent Document 2 makes it possible to polish a long object to be polished, it is difficult to polish an object to be polished with an upper back.

In the magnetic polishing machine, there is a rotating shaft at the center of the magnet disk, and neither the S pole zone nor the N pole zone can exist. For this reason, a dead zone in which the magnet piece does not rotate violently occurred in the center of the container. In Patent Document 2, the problem of the dead zone can be solved by swinging the magnet disk.
Further, Patent Document 3 considered that the polishing pieces jumped more violently. By arranging another permanent magnet on the side of the polishing vessel, the movement of the magnet piece is complicated by disturbing the magnetic field, thereby increasing the polishing efficiency.
Japanese Patent Laid-Open No. 03-66560 JP 2001-138208 A Japanese Patent No. 2627994 Japanese Patent No. 2954904

  The present inventors have studied a method of flying a magnet piece high. However, the range of the container under the strong magnetic influence of the magnet disk was about 10 cm. For the present inventors, it was an indispensable problem to improve the performance of the magnetic sander by eliminating the dead zone and making the movement of the material to be polished more active even with one magnetic sander. It was.

  An object of the present invention is to solve the above-mentioned problems, and the constitution thereof is such that a north pole zone and a south pole zone are alternately provided on the surface of a disk made of a non-magnetic material, and the top face is a north pole in the north pole zone. A permanent magnet is embedded in the S pole zone, and a permanent magnet is embedded in the S pole zone with the S pole as the top surface. A magnet disk rotating at high speed is provided on the disk as close as possible without contacting the disk. In a magnetic polishing machine of a type in which a container charged with a material to be polished and a small piece for polishing is provided at a predetermined distance, a first motor for rotating a magnet disk, a center line passing through the magnet disk and the container, At least one rotor that is inclined by 10 to 40 degrees and is rotated by a second motor on the lower side surface of the inclined container is provided, and the rotor rotates the container in a direction opposite to the rotation direction of the magnet disk. .

  The magnetic polishing machine of the present invention tilts the polishing machine itself. As a result, the first motor, the magnet disk, and the container are inclined at the same angle in the range of 10 to 40 degrees. The rotational height of the magnetic piece was about 10 cm from the bottom due to the relationship between the influence range of the magnetic force of the magnetic disk and the gravity applied to the magnetic piece. As a result of tilting, the influence of gravity is reduced on the upper side of the container. Therefore, it is possible to fly the magnetic piece as high as about 20 cm from the bottom.

Further, in the magnetic polishing machine, there is a phenomenon in which the magnetic piece slowly rotates in the rotating direction of the magnet disk together with the material to be polished while moving violently.
In the present invention, only the inclined container and its contents are rotated using a second motor in a direction opposite to the rotating direction of the magnet disk. As a result, the agitation by the influence of magnetism and the agitation caused by the screw-like water flow generated by the rotation of the container are complicatedly affected in the container contents, so that the polishing efficiency is remarkably improved. Furthermore, the dead zone that is a problem in the magnetic polishing machine has been eliminated, and the amount of material to be polished that can be polished at one time has increased approximately twice.

  According to the present invention, the movement of the magnetic piece was activated and succeeded in spinning up while rotating to a higher position of the container. As a result, it has become possible to polish an abrasive material with an upper back, which could not be polished until now, while taking advantage of the advantages of a magnetic sander. In conventional barrel polishing, the protrusions are particularly severely polished, so that it is difficult to maintain the shape of the material to be polished, and materials having sharp corners or materials with complicated shapes cannot be polished. According to the present invention, the time for rotating the container is short, the substantial polishing is due to the magnetic pieces, the problem of the dead zone is solved, and the processing efficiency of the material to be polished is doubled.

  FIG. 4 shows a plan view of the magnet disk 1 of the present invention. The material of the magnet disk 1 may be any non-magnetic material such as aluminum, plastics, ceramics, etc., which are smooth on the upper and lower surfaces. Reference numeral 2 denotes a rotating shaft, which is driven by the first motor and vigorously rotates the magnet disk. Strong permanent magnets 20 and 21 such as rare earth magnets are embedded in the disk, and the permanent magnet 20 is embedded in the north pole zone N separated by the phantom line with the north pole facing up. A permanent magnet 21 is embedded with the pole facing up.

  A cross-sectional view of the magnetic polishing machine of the present invention is shown in FIG. 1, and a cross-sectional view taken along line II-II in FIG. 1 is shown in FIG. The first motor 3 and the magnet disk 1 were attached to the frame body 4 with an inclination of 30 degrees with respect to the vertical. This inclination angle is 10 to 40 degrees, preferably 20 to 35 degrees. If it is less than 10 degrees, the effect of inclining is small, and there is little way to fly the magnetic pieces, which is not much improved compared to the prior art. When the inclination angle exceeds 40 degrees, collision between non-abrasive materials due to rotation of the container increases, and the advantages of the magnetic polishing machine are reduced, which is not suitable for polishing non-abrasive materials with complicated shapes.

A separator 5 made of a non-magnetic material is fixed on the magnet disk 1 while maintaining a slight gap so as not to contact. For example, a tough material such as a tempered glass plate, an aluminum plate, or a reinforced plastic plate is used. A container can be placed directly on the separator plate 5.
The container may be a non-magnetic material such as non-magnetic metal such as aluminum, ABS resin, plastic such as polypropylene. A lid 13 that can seal the inside is provided at the top, and the lid may be a fitting lid, a screw lid, or a fitting lid. In FIG. 1, flanges that coincide with each other are provided on the container and the lid, and a fastener that closely engages the lid and the flange of the main body via packing is provided (not shown). Furthermore, a handle for carrying may be provided.

When the polishing container 6 charged on the separator plate 5 is rotated in the direction opposite to the rotation direction of the magnet disk, the movement of the magnetic pieces becomes more active. In order to rotate, the 2nd motor 10 is attached to the north body 4 of the position applicable to the side edge part of the container 6 which inclined. One or a pair of rotors 8 extending from the second motor 10 and in close contact with the side wall of the container being operated are rotated by the second motor. Since the container 6 is placed on the inclined separator 5, the crimping tool 7 is attached to the side of the container opposite to the second motor 10.
Furthermore, although not shown, a removable stirring blade may be provided on the bottom of the container. As the container rotates, the stirring blades generate an upward flow, and have the effect of lifting the magnetic pieces high.

The crimping tool 7 can be separated toward the centrifugal direction of the container diameter, or can be brought close to the side surface of the container. The crimping tool extends two rotors 9 from the main body, and the rotors 9 are rotatable in the same direction as the container. By bringing the main body close to the side surface of the container, the rotor 9 rotates in accordance with the container, and the container 6 can be reliably held at an inclined position without hindering the rotation of the rotor 8 of the second motor.
1 and 2, two arms are extended in the container direction, and a rotor 9 is provided at the tip of the arm. However, the object of the present invention can also be achieved by providing a crimping tool that is a rotor that can rotate freely while pressing the container, and rotating the container while holding the container.

  Reference numeral 11 denotes a positioning rotating body. In FIG. 1 and FIG. 3, three are used at equal intervals, but two or four or more may be in close contact with the lowermost end of the side surface of the container at equal intervals. The positioning rotating body 11 has a truncated cone shape and can freely rotate about 12 as a central axis. Due to the presence of the positioning rotator 11, the container 6 can be accurately placed on the top of the magnet disk 1 via the separator plate 5, and can rotate freely during operation, so that the rotation of the container 6 is not hindered.

As shown in Patent Document 4, the magnetic piece is a material such as stainless steel having weak magnetism, and the maximum value (HB) _{max of the} demagnetization curve in the second quadrant of the hysteresis loop is 0.006 to 0.15 MGOe, Preferably it exists in the range of 0.002-0.1MGOe.
The shape is not limited, and includes a rod shape, a plate shape, and the like, but a rod-shaped body having a diameter of 0.2 to 1.5 mm and a length of 3 to 10 mm is desirable. As these magnetic pieces jump and jump while rotating, even the inside of the small depression is polished without changing the shape of the non-abrasive material.

  When polishing, it is desirable to put a magnetic piece and a material to be polished in a container, and further to be charged with a surfactant solution. In the presence of a surfactant such as a detergent, oil stains can also be washed. it can. Moreover, a rust preventive agent etc. can also be added. The presence of moisture makes it easier to rotate the magnetic piece, but rarely adding a solution, and polishing may be performed with only the magnetic piece and the material to be polished. The polishing time is 5 minutes to 2 hours, preferably 10 minutes to 1 hour.

  After polishing, the container lid 13 is opened, and the crimping tool 7 is released in the container centrifugal direction. Next, the container 6 is further tilted about the rotation shaft 14. In tilting, when the container 6 is located at the position shown in FIG. 1, the magnetic disk 1 and the magnetic piece in the container may be pulled together and cannot be separated by one person. In such a case, it is preferable to provide a handle for rotating the rotation shaft 14. As the bottom of the container 6 moves away from the magnet disk 1, the magnets are no longer pulled together and can be rotated with a weak force.

  FIG. 2 is a cross-sectional view when the container 6 is further rotated 90 degrees from the state of FIG. 1 when the contents are discharged. The container becomes light just by rotating the container 6 by 20 to 30 degrees. Thereafter, the contents can be taken out by rotating little by little. 90 degrees of rotation of the container 6 is sufficient. Furthermore, it is possible to remove only the container 6 away from the polishing machine.

FIG. 1 is a cross-sectional view of the present invention during operation. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is a cross-sectional view showing the positional relationship between the container and the magnetic polishing machine during discharge. FIG. 4 is a plan view of the magnet disk.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Magnet disk 2 Rotating shaft 3 1st motor 4 Frame body 5 Separating plate 6 Container 7 Crimping tool 8, 9 Rotor 10 2nd motor 11 Positioning rotating body 12 Center shaft 13 Lid 14 Rotating shaft 20, 21 Permanent magnet S S pole Zone N North pole zone

Claims (6)

N-pole zones and S-pole zones are alternately provided on the surface of a disk made of a non-magnetic material. The N-pole zone is embedded with a permanent magnet with the top surface being N-pole, and the top surface is made S-pole in the S-pole zone. A container in which a permanent magnet is embedded and a magnet disk that rotates at high speed is provided, and a material to be polished and a small piece for polishing are placed on the disk at a distance as close as possible without contacting the disk. In a magnetic polishing machine of the type provided with
An inclined magnetic polishing machine characterized in that a first motor for rotating a magnet disk, a center line penetrating the magnet disk and the container are inclined by 10 to 40 degrees with respect to a vertical line. 2. The inclined mold according to claim 1, wherein at least one rotor that is rotated by a second motor is provided on a lower surface of the inclined container, and the rotor rotates the container in a direction opposite to the rotation direction of the magnet disk. Magnetic polishing machine. There is at least one rotor on the upper side of the inclined container, and the rotor can be pressed against or released from the container. The inclined magnetic polishing machine according to claim 1, wherein the inclined magnetic polishing machine is provided. 4. A rotating shaft for rotating the container further in the inclination angle direction by 0 to 90 degrees when the motor is not operated is provided outside the inclined lower surface of the container. Tilt type magnetic polishing machine. When mounting the container with the crimping tool separated, at least two positioning rotators with a rotating part closely contacting from the outside of the container are provided at equal intervals on the lowermost side of the container to ensure positioning of the container and smooth rotation An inclined magnetic polishing machine according to any one of claims 1 to 4. 6. The inclined magnetic polishing machine according to claim 1, wherein a rotary blade that generates an upward flow with the rotation of the container is detachably attached to the center of the container bottom.