Information
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Patent Grant
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6231426
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Patent Number
6,231,426
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Date Filed
Friday, June 16, 200024 years ago
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Date Issued
Tuesday, May 15, 200123 years ago
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Inventors
-
-
Examiners
Agents
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CPC
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US Classifications
Field of Search
US
- 451 32
- 451 326
- 451 327
- 451 328
- 451 329
- 451 74
- 451 113
- 451 114
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International Classifications
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Abstract
A magnetic polishing machine comprises a polishing tub and an alternating magnetic field generator for producing a magnetic field effect to induce a number of magnetic media to travel at a high speed to polish by rubbing a workpiece contained in the polishing tub. The magnetic polishing machine further comprises a built-in separation tub and a homomagnetic field generator for generating a unidirectional magnetic field effect to separate the cohered magnetic media from the workpiece which is transferred from the polishing tub to the separation tub upon completion of the polishing process.
Description
FIELD OF THE INVENTION
The present invention relates generally to a polishing machine, and more particularly to a magnetic polishing machine.
BACKGROUND OF THE INVENTION
The U.S. Pat. Nos. 5,662,516 and 5,044,128 disclose a polishing machine comprising a polishing tub in which a plurality of magnetic media are activated by a magnetic field effect to bring about the rubbing of work pieces so as to make them bright and lustrous.
Such prior art polishing machines as described above are defective in design in that the magnetic media are apt to be attracted to the surface of a workpiece. The removal of the magnetic media from the surface of a polished work piece is a costly operation, which is often done by an expensive peripheral equipment. It is conceivable that an extra floor space must be allocated for disposition of the peripheral equipment.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a magnetic polishing machine which is free from the drawbacks of the prior art polishing machines described above.
In keeping with the principle of the present invention, the foregoing objective of the present invention is achieved by the magnetic polishing machine comprising a housing in which a polishing tub, a separation tub, an alternating magnetic field generator, and a homomagnetic field generator are disposed such that the polishing tub is corresponding in location to the alternating magnetic field generator, and that the separation tub is corresponding in location to the homomagnetic field generator. The polishing tub contains a plurality of magnetic polishing media, which are induced by the homomagnetic field effect to move in one direction to polish the surface of a workpiece by rubbing. The process of removing the cohered magnetic media from the surface of the workpiece is carried out in the separation tub.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
shows a perspective view of a magnetic polishing machine of a preferred embodiment of the present invention.
FIG. 2
shows a sectional view of a portion taken along the direction indicated by a line
2
—
2
as shown in FIG.
1
.
FIG. 3
shows a sectional view of a portion taken along the direction indicated by a line
3
—
3
as shown in FIG.
2
.
FIG. 4
shows a sectional schematic view of the preferred embodiment of the present invention at work.
FIG. 5
shows a sectional schematic view of another preferred embodiment of the present invention.
FIG. 6
shows a sectional view of a portion taken along the direction indicated by a line
6
—
6
as shown in FIG.
5
.
DETAILED DESCRIPTION OF THE INVENTION
As shown in
FIGS. 1-3
, a magnetic polishing machine
100
embodied in the present invention comprises a housing
10
, an alternating magnetic field generator
20
, and a homomagnetic field generator
30
.
The housing
10
contains a polishing tub
11
and a separation tub
12
. The housing
10
is provided with a hinged soundproof lid
13
for covering the polishing tub
11
and the separation tub
12
. The housing
10
is further provided with a control panel
14
having a power switch
141
, a timer switch
142
, a speed adjustment switch
143
, and a forward-reverse switch
144
, which are all electrically connected with the alternating magnetic field generator
20
and the homomagnetic field generator
30
.
The polishing tub
11
is provided with a container
15
having an open top. The container
15
contains a polishing fluid
151
and a plurality of needle-shaped metal magnetic polishing media
152
.
The separation tub
12
is provided with a cylindrical container
16
in which a screen container
17
is disposed such that there is a gap
18
between the cylindrical container
16
and the screen container
17
. The screen container
17
is provided in the side wall and the bottom thereof with a number of meshes
171
which are dimensioned to allow the passage of the magnetic polishing media
152
.
The alternating magnetic field generator
20
is disposed in the interior of the housing
10
and is formed of a motor
21
, a fixation seat
22
, and a rotary disk
23
. The motor
21
is mounted under the polishing tub
11
by the fixation seat
22
. The motor
21
has an output shaft
211
which is fastened with the rotary disk
23
located under the polishing tub
11
. The rotary disk
23
is provided in the top thereof with a plurality of permanent heteropolar magnets
24
and
25
, with each having the magnetic N and S poles. The permanent magnets
24
and
25
are circularly arranged at an interval of 90 degrees.
The homomagnetic field generator
30
is disposed in the interior of the housing
10
and is formed of a motor
31
, a fixation seat
32
, and a rotary disk
33
. The motor
31
is mounted under the separation tub
12
by the fixation seat
32
. The motor
31
has an output shaft
311
which is fastened with the rotary disk
33
located under the separation tub
12
. The rotary disk
33
is provided in the top thereof with a plurality of permanent homopolar magnets
34
.
As shown in
FIG. 4
, a workpiece A is placed in the container
15
of the polishing tub
11
before the motor
21
is started to actuate the rotary disk
23
to turn. In light of the N poles and the S poles of the magnets
24
and
25
being different in location, an alternating magnetic field is brought about as the rotary disk
23
is rotated, thereby resulting in the induction of the magnetic polishing media
152
by the magnetic force B. The magnetic polishing media
152
are thus caused to travel at a high speed to smooth and brighten the surface of the workpiece A by rubbing. The polishing fluid
151
serves to bring about the cooling effect and the cleansing effect.
Upon completion of the polishing process, the workpiece A, the magnetic polishing media
152
, and the polishing fluid
151
are poured together into the screen container
17
of the separation tub
12
. The workpiece A and the magnetic polishing media
152
are kept in the screen container
17
, whereas the polishing fluid
151
is kept in the cylindrical container
16
. As the motor
31
is started, the rotary disk
33
is driven by the motor
31
to rotate. As a result, the homopolar magnets
34
bring about a unidirectional magnetic field effect to separate the cohered magnetic media
152
from the polished workpiece A. The separated magnetic media
152
are collected in the cylindrical container
16
via the meshes
171
.
As shown in
FIGS. 5 and 6
, an alternating magnetic field generator
40
of the second preferred embodiment of the present invention comprises a rotating member
41
and three magnetic field generating units
42
.
The rotating member
41
has an action motor
411
mounted in the bottom of the housing, a rotary seat
412
, and an index head
413
connecting the motor
411
and the rotary seat
412
. The action motor
411
drives via the index head
413
the rotary seat
412
to turn back and forth in a predetermined range, such as a range of 90 degrees.
Each of the magnetic field generating units
42
is formed of a motor
421
, a fixation seat
422
, and a rotary disk
423
. The units
42
are equidistantly arranged on the rotary seat
412
such that the motor
412
is mounted on the top of the rotary seat
412
by the fixation seat
422
for driving the rotary disk
423
corresponding to the polishing tub
11
. The rotary disk
423
is provided with a plurality of magnets
424
and
425
, with the magnets
424
having the N pole, and with the magnets
425
having the S pole.
As the rotary seat
412
turns, the rotary disks
423
of the units
42
turn at the same time such that each unit brings about an induction magnetic field. As a result, any space in the container
15
is provided with a time-lapse polar alternating magnetic field capable of inducing the magnetic polishing media
152
to travel in all directions and at all angles to polish the surface of the workpiece A with a greater efficiency.
Claims
- 1. A magnetic polishing machine comprising:a housing; a polishing tub disposed in said housing and provided with a plurality of magnetic polishing media; an alternating magnetic field generator disposed in said housing such that said alternating magnetic field generator is corresponding in location to said polishing tub whereby said alternating magnetic field generator brings about a magnetic field effect to induce said magnetic polishing media to travel in a direction to polish by rubbing a workpiece contained in said polishing tub; a separation tub disposed in said housing; and a homomagnetic field generator disposed in said housing such that said homomagnetic field generator is corresponding in location to said separation tub whereby said homomagnetic field generator brings about a unidirectional magnetic field effect to separate the cohered magnetic polishing media from the workpiece which is transferred from said polishing tub to said separation tub.
- 2. The magnetic polishing machine as defined in claim 1, wherein said alternating magnetic field generator is formed of a motor, and a rotary disk fastened with an output shaft of said motor such that said rotary disk is corresponding in location to said polishing tub whereby said rotary disk is provided with a plurality of heteropolar magnets.
- 3. The magnetic polishing machine as defined in claim 1, wherein said homomagnetic field generator comprises a motor, and a rotary disk fastened with an output shaft of said motor such that said homomagnetic field generator is corresponding in location to said separation tub whereby said rotary disk is provided with a plurality of homopolar magnets.
- 4. The magnetic polishing machine as defined in claim 1, wherein said alternating magnetic field generator comprises:a rotating member disposed in said housing and formed of an action motor and a rotary seat driven by said action motor; and at least two magnetic field generating units, with each comprising a motor mounted on said rotary seat such that an output shaft of said motor is fastened with a rotary disk corresponding in location to said polishing tub whereby said rotary disk is provided with a plurality of heteropolar magnets.
- 5. The magnetic polishing machine as defined in claim 4, wherein said rotating member is further formed of an index head whereby said index head is connected with said rotary seat to enable said rotary seat to turn in a reciprocating manner within a predetermined range.
- 6. The magnetic polishing machine as defined in claim 1, wherein said polishing tub is provided with a container fitted thereinto; wherein said magnetic polishing media are disposed in said container.
- 7. The magnetic polishing machine as defined in claim 6, wherein said container contains a polishing fluid.
- 8. The magnetic polishing machine as defined in claim 1, wherein said separation tub is provided with a cylindrical container fitted thereinto whereby said cylindrical container is provided with a screen container fitted thereinto such that said screen container is not in contact with said cylindrical container.
- 9. The magnetic polishing machine as defined in claim 1, wherein said housing is provided with a control panel having a power switch, a timer switch, a speed adjustment switch, and a rotational direction switch, which are electrically connected with said alternating magnetic field generator and said homomagnetic field generator.
US Referenced Citations (3)