TWI889142B - Magnetic grinding and polishing machine - Google Patents

Abstract

The magnetic grinding and polishing machine of the present invention comprises a base; a magnetic grinding container, which is arranged on the base and has a tube edge and a grinding space for containing a plurality of magnetic medium abrasives; a magnetic disk motor is arranged on the base; a permanent magnetic disk, which is located below the magnetic grinding container and connected to the magnetic disk motor, and the permanent magnetic disk is driven by the magnetic disk motor to rotate relative to the magnetic grinding container; a plurality of electromagnets, which are arranged outside the tube edge of the magnetic grinding container; and a control device, which is connected to the magnetic disk motor and the plurality of electromagnets and is used to control the magnetic disk motor and the plurality of electromagnets so that the plurality of electromagnets generate different magnetic poles for the magnetic grinding container. The magnetic grinding and polishing machine of the present invention solves the problem that the conventional magnetic grinding and polishing machine cannot perform all-round grinding by forming a magnetic field from the side of the magnetic grinding container by the electromagnetic irons, and can produce a better grinding and polishing effect.

Description

Magnetic grinding and polishing machine

The present invention relates to a magnetic grinding machine, in particular to a permanent magnet plane rotating magnetic grinding machine combined with a fixed electromagnetic magnet and a magnetic grinding and polishing machine with a variable magnetic field array structure.

FIG. 1 shows a conventional magnetic grinding and polishing machine, which includes a base 20, a magnetic grinding container 30, a magnetic disk motor 40 and a permanent magnetic disk 50, and only provides a simple magnetic grinding effect of bottom magnetic force variation.

The applicant's Taiwan patent M585686 provides a magnetic grinding machine, comprising a machine base; a drive unit, which is arranged in the machine base and has an upward drive shaft; and a magnetic conductive container, which has a bottom plate, an inner annular wall, and an outer annular wall. The bottom plate is fixed to the drive shaft and is located above the drive unit, and the inner annular wall and the outer annular wall are fixed to the bottom plate and are located above the bottom plate. The inner annular wall, the outer annular wall and the bottom plate form an annular groove; the bottom plate is embedded with a first magnetic unit, and the first magnetic unit has a plurality of magnets; the inner annular wall is embedded with a second magnetic unit, and the second magnetic unit has a plurality of magnets; the outer annular wall is embedded with a third magnetic unit, and the third magnetic unit has a plurality of magnets. Thereby, when the magnetic container contains a plurality of magnetic medium abrasive particles, the plurality of magnets in the magnetic container will absorb the plurality of magnetic medium abrasive particles to the annular groove, thereby producing a three-dimensional grinding passivation effect and improving the grinding passivation efficiency.

The applicant's Taiwan patent M617859 provides a magnetic grinding and polishing machine including a base and a magnetic grinding container arranged on the base. A rotating unit is arranged above the magnetic grinding container. The rotating unit has a main motor, an auxiliary motor support frame connected to the main motor, an auxiliary motor arranged on the auxiliary motor support frame, and a workpiece fixing mechanism connected to the auxiliary motor. The workpiece fixing mechanism can revolve relative to the magnetic grinding container on one hand, and can rotate relative to the magnetic grinding container on the other hand. In addition, a magnetic disk motor and a magnetic disk connected to the magnetic disk motor are arranged below the magnetic grinding container. The magnetic disk is driven by the magnetic disk motor to rotate relative to the magnetic grinding container to generate a rotating alternating magnetic field. As can be seen from the above, the workpiece fixing mechanism revolves relative to the magnetic grinding container through the auxiliary motor support frame, and is driven by the auxiliary motor to rotate relative to the magnetic grinding container, so that the magnetic grinding polishing machine can produce better grinding and polishing effects.

The applicant's Taiwan patent M630385 provides a continuous magnetic grinder, which includes a base. A driving device is arranged on the base. A turntable is connected to the driving device and is driven to rotate by the driving device. Each alternating magnetic field generating device has a support frame, a motor and a magnetic disk. The support frame is fixed to the turntable, the motor is fixed to the support frame, and the magnetic disk is provided with magnets with N poles and S poles. The magnetic disk is driven to rotate by the motor. And a controller is electrically connected to the driving device and each of the motors. The magnetic grinder can perform magnetic grinding operations continuously, saving the operation time of the overall grinding operation and reducing the cost of the magnetic grinding operation. By controlling the driving device to rotate the turntable and each of the alternating magnetic field generating devices through the controller, the magnetic grinding machine can continuously perform magnetic grinding operations, saving the operation time of the overall grinding operation and reducing the cost of the magnetic grinding operation.

However, these known magnetic grinding and polishing machines still lack an all-round grinding effect and thus need to be further improved.

The main purpose of the present invention is to provide a magnetic grinding and polishing machine, which can form a full-dimensional three-dimensional structure magnetic field distribution to enhance the magnetic grinding effect.

In order to achieve the above-mentioned main purpose, the magnetic grinding and polishing machine of the present invention includes a base; a magnetic grinding container, which is arranged on the base and has a tube edge and a grinding space for containing multiple magnetic medium abrasives; a magnetic disk motor, which is arranged on the base; a permanent magnetic disk, which is located below the magnetic grinding container and connected to the magnetic disk motor, and the permanent magnetic disk is driven by the magnetic disk motor to rotate relative to the magnetic grinding container; multiple electromagnets, which are arranged outside the tube edge of the magnetic grinding container; and a control device, which is connected to the magnetic disk motor and the multiple electromagnets and is used to control the magnetic disk motor and the multiple electromagnets so that the multiple electromagnets generate different magnetic poles for the magnetic grinding container.

By combining permanent magnet plane rotation magnetic grinding with a fixed electromagnetic ferromagnetic field variable array structure, the grinding magnetic field and the jumping of magnetic medium abrasive can be increased and expanded upwards, solving the problem that conventional magnetic grinding machines are limited by the bottom magnetic field and improving the magnetic grinding effect.

Preferably, the plurality of electromagnetic magnets are arranged at first height intervals on the tube edge of the magnetic grinding container.

Preferably, the plurality of electromagnetic magnets are arranged at intervals along a second height on the tube edge of the magnetic grinding container, and the second height is higher than the first height.

Preferably, the control device includes a first control unit, a second control unit and a plurality of DC power supply units, the first control unit is connected to the disk motor to control the disk motor to drive the permanent disk to rotate, the plurality of DC power supply units are connected to the second control unit and the plurality of electromagnets, and the second control unit is used to control the plurality of DC power supply units to supply power to the plurality of electromagnets so that the adjacent plurality of electromagnets generate different magnetic poles.

Preferably, generating different magnetic poles of the plurality of electromagnets includes switching the magnetic poles of each electromagnet over a time period.

Preferably, the switching of the magnetic poles includes a delay time.

Preferably, the control device includes a human-machine interface connected to the first control unit and the second control unit.

Preferably, the permanent magnetic disk includes a disk body and a plurality of permanent magnets, and the plurality of permanent magnets are disposed on the disk body.

Preferably, each of the plurality of electromagnetic irons includes an iron core and a coil, the coil is wound around the iron core, and the iron core has a fixing hole.

The detailed structure, features, assembly or use of the magnetic grinding and polishing machine provided by the present invention will be described in the detailed description of the implementation method that follows. However, those with ordinary knowledge in the field of the present invention should understand that the detailed description and the specific embodiments listed for implementing the present invention are only used to illustrate the present invention and are not used to limit the scope of the patent application of the present invention.

The applicant first explains that in the entire specification, including the embodiments described below and the claims of the patent application, the terms related to direction are based on the directions in the drawings. Secondly, in the embodiments and drawings to be described below, the same component numbers represent the same or similar components or their structural features.

2 to 5 , a magnetic grinding and polishing machine 10 according to a preferred embodiment of the present invention includes a base 20 , a magnetic grinding container 30 , a magnetic disk motor 40 , a permanent magnetic disk 50 , a plurality of electromagnetic magnets 60 and a control device 70 .

The magnetic grinding container 30 is located on the top surface of the base 20. The magnetic grinding container 30 has a tube edge 31 and a grinding space 32 for containing a plurality of magnetic medium abrasives 34. The magnetic medium abrasives 34 can be stainless steel magnetic needles, granular magnetic abrasives, liquid magnetic fluid abrasives, or composite abrasives of magnetic abrasives combined with hard abrasives (such as aluminum oxide), which are not limited here. As shown in FIG. 3, in this embodiment, the magnetic grinding container 30 is cylindrical.

The magnetic disk motor 40 is disposed at the bottom of the base 20 .

The permanent magnetic disk 50 is located below the magnetic grinding container 30 and connected to the magnetic disk motor 40, so that the permanent magnetic disk 50 can be driven by the magnetic disk motor 40 to rotate relative to the magnetic grinding container 30. The permanent magnetic disk 50 has a disk body 51 and a plurality of permanent magnets 52, and the permanent magnets 52 are arranged on the disk body 51, as shown in FIG. 4 . When the permanent magnetic disk 50 rotates, the magnetic poles (N or S) of the plurality of permanent magnets 52 generate a rotating alternating magnetic field to sense the magnetic medium abrasive 34 contained in the grinding space 32, so that the magnetic medium abrasive 34 rotates along with the direction of the magnetic field lines generated by the permanent magnets 52, so that the magnetic medium abrasive 34 can be used to perform passivation, grinding, polishing, etc. on the workpiece to be processed. The shape and magnetic pole direction of the permanent magnet 52 can be adjusted arbitrarily according to actual needs, and are only used as examples here for illustration and are not limited.

Each electromagnetic iron 60 is respectively arranged outside the tube edge 31 of the magnetic grinding container 30. Each electromagnetic iron 60 has an iron core 61 and a coil 62. The coil 62 is wound around the iron core 61. Each electromagnetic iron 60 is arranged at intervals along a first height H1 and a second height H2 of the tube edge 31 of the magnetic grinding container 30. The second height H2 is higher than the first height H1. In other embodiments, each electromagnetic iron 60 can also be installed at the first height H1, or each electromagnetic iron 60 can also be installed at the second height H2. As shown in FIG. 5, the electromagnetic iron 60 has an end portion 601 close to the tube edge near the outer side of the magnetic grinding container 30, which is an arc surface, matching the outer peripheral shape of the magnetic grinding container 30.

As shown in FIG2 , the control device 70 is electrically connected to the magnetic disk motor 40 and the plurality of electromagnets 60 to control the operation of the magnetic disk motor 40 and the electromagnets 60 , wherein the control device 70 can control the electromagnets 60 to generate different magnetic poles or alternating magnetic poles. In this embodiment, adjacent electromagnets 60 generate different magnets. The control device 70 is a computer control unit of the magnetic machine NC, and the control unit can be programmed to control the actuation sequence and direction of the electromagnets 60 . The structure of the control device is shown in FIG6 , and the control device 70 includes a first control unit 71, a second control unit 72, a plurality of DC power supply units 73 and a human-machine interface 74. The first control unit 71 is connected to the magnetic disk motor 40 to control the magnetic disk motor 40 to drive the permanent magnetic disk 50 to rotate to generate an alternating magnetic field. The plurality of DC power supply units 73 are connected to the second control unit 72 and the plurality of electromagnets 60. The second control unit 72 is used to control the plurality of DC power supply units 73 to connect the plurality of electromagnets 60 so that the adjacent plurality of electromagnets 60 generate different magnetic poles.

The above embodiment forms a combination permanent magnetic disk structure and an electromagnetic array combination structure, and a program controls the electromagnetic 60 to start and stop (ON/OFF) operation, so that the magnetic poles (N or S) of each electromagnetic 60 are switched with the time cycle, and even a delay time is included in the switching of the magnetic poles in each time cycle, so as to realize that the magnetic poles of each electromagnetic 60 are repeatedly switched with the time cycle to generate an array-like rotation and a dynamically changing magnetic field, as shown in FIG. 7. The magnetic pole output timing diagram of each electromagnetic iron in the embodiment shows that each time cycle has the results of N-pole output, no output, and S-pole output. In other embodiments, each time cycle can also start with no output and S-pole output, and is not limited to starting with N-pole output. This guides the magnetic medium abrasive 34 such as stainless steel or magnetic conductive material to produce a three-dimensional multifunctional controlled three-dimensional grinding structure magnetic grinding machine, which can form an all-round three-dimensional structure magnetic field distribution and improve the magnetic grinding effect.

As shown in FIG8 , another embodiment of the present invention, the magnetic grinding container 30 is in a square cylindrical shape. The electromagnetic iron 60 has a cylindrical end 601 near the outer side of the magnetic grinding container 30 and is flat. As shown in FIG9 , the electromagnetic iron 60 has a cylindrical end 601 near the outer side of the magnetic grinding container 30 and is flat. As shown in FIG. 10 , the N and S pole output schematic diagram of the electromagnetic array of the present embodiment does not limit the position and sequence of the electromagnetics 60 , wherein the fifth electromagnetic 60 output timing cycle is the same as the first electromagnetic 60 output timing cycle, the sixth electromagnetic 60 output timing cycle is the same as the second electromagnetic 60 output timing cycle, the seventh electromagnetic 60 output timing cycle is the same as the third electromagnetic 60 output timing cycle, and the eighth electromagnetic 60 output timing cycle is the same as the fourth electromagnetic 60 output timing cycle, and the aforementioned electromagnetic action doubling effect of the present invention can also be achieved, and the desired effect of the present invention can also be achieved.

In addition to the above, the electromagnetic iron 60 of the present invention can also be implemented in the following ways: As shown in FIG. 11, the iron core 61 of the electromagnetic iron 60 has a fixing hole 611. As shown in FIG. 12, the electromagnetic iron 60 has an end 601 close to the outer side of the magnetic grinding container 30 and is in the shape of an arc in the direction shown in the figure. As shown in FIG. 13, the electromagnetic iron 60 has an end 601 close to the outer side of the magnetic grinding container 30 and is in the shape of a sharp point. The above-mentioned implementation of the transformation can achieve the above-mentioned electromagnetic effect of the present invention and also achieve the desired effect of the present invention.

In addition to the above, the permanent magnetic disk 50 of the present invention can be implemented in a different manner as shown in Figures 14 to 18, and the permanent magnet 52 can have other different shapes and different arrangements. The above-mentioned changes can achieve the aforementioned magnetic force effect of the present invention and also achieve the desired effect of the present invention.

In order to effectively utilize the magnetic force generated by the electromagnetic magnet 60 , a concave portion (not shown) may be formed on the side wall of the magnetic grinding container 30 to accommodate the electromagnetic magnet 60 .

In addition, when there is only one electromagnet 60, the output can be performed in the aforementioned embodiment; when there are two electromagnets 60, the output can be performed in the aforementioned embodiment; and when there are three electromagnets 60, the output can be performed in the aforementioned embodiment.

Furthermore, the output of each electromagnet 60 is not limited to the above, and can be changed to have the magnetic pole output timing of the electromagnet 60 switch output according to the N and S poles, and another magnetic pole output timing of the electromagnet 60 switch output according to the S and N poles, and omit the state of no output.

In summary, the magnetic grinding and polishing machine 10 of the present invention is provided with an electromagnet 60 to form an omnidirectional three-dimensional structure magnetic field distribution to guide the grinding material (stainless steel needle or magnetic material, etc.) to rotate in a three-dimensional space to achieve three-dimensional multifunctional controlled three-dimensional grinding, so that the workpiece can obtain a better grinding effect; and the control device 70 controls the output magnetic poles of the electromagnet 60 with a program to generate an array of rotating and dynamically changing magnetic fields, which can make the grinding effect more convenient to adjust.

10: Magnetic grinding and polishing machine 20: Base 30: Magnetic grinding container 31: Cylinder edge 32: Grinding space 34: Magnetic medium abrasive 40: Magnetic disk motor 50: Permanent magnetic disk 51: Disk body 52: Permanent magnet 60: Electromagnet 61: Iron core 62: Coil 601: End near the cylinder edge 611: Fixing hole 70: Control device 71: First control unit 72: Second control unit 73: DC power supply unit H1: First height H2: Second height

FIG. 1 is a combined cross-sectional view of a known magnetic grinding and polishing machine. FIG. 2 is a combined cross-sectional view of a preferred embodiment of the magnetic grinding and polishing machine of the present invention. FIG. 3 is a top combined view of a preferred embodiment of the magnetic grinding and polishing machine of the present invention. FIG. 4 is a schematic diagram of a permanent magnetic disk of a preferred embodiment of the present invention. FIG. 5 is a schematic diagram of an electromagnet of a preferred embodiment of the present invention. FIG. 6 is a schematic diagram of the control device structure of a preferred embodiment of the present invention. FIG. 7 is a timing diagram of the magnetic pole output of the electromagnet of a preferred embodiment of the present invention. FIG. 8 is a top combined view of another preferred embodiment of the magnetic grinding and polishing machine of the present invention. Figure 9 is a schematic diagram of an electromagnet of another preferred embodiment of the present invention. Figure 10 is a timing diagram of the magnetic pole output of an electromagnet of another preferred embodiment of the present invention. Figure 11 is a schematic diagram of another electromagnet of the present invention. Figure 12 is a schematic diagram of another electromagnet of the present invention. Figure 13 is a schematic diagram of another electromagnet of the present invention. Figure 14 is a schematic diagram of another permanent magnetic disk of the present invention. Figure 15 is a schematic diagram of another permanent magnetic disk of the present invention. Figure 16 is a schematic diagram of another permanent magnetic disk of the present invention. Figure 17 is a schematic diagram of another permanent magnetic disk of the present invention. Figure 18 is a schematic diagram of another permanent magnetic disk of the present invention.

10: Magnetic grinding and polishing machine

20: Base

30: Magnetic grinding container

40: Disk motor

50: Permanent disk

60: Magnet

70: Control device

Claims (9)

A magnetic grinding and polishing machine comprises: a base; a magnetic grinding container, which is arranged on the base and has a tube edge and a grinding space for containing a plurality of magnetic medium abrasives; a magnetic disk motor, which is arranged on the base; a permanent magnetic disk, which is located below the magnetic grinding container and connected to the magnetic disk motor, and the permanent magnetic disk is driven by the magnetic disk motor to rotate relative to the magnetic grinding container; a plurality of electromagnets, which are arranged outside the tube edge of the magnetic grinding container; and a control device, which is connected to the magnetic disk motor and the plurality of electromagnets and is used to control the magnetic disk motor and the plurality of electromagnets so that the plurality of electromagnets generate different magnetic poles for the magnetic grinding container. A magnetic grinding and polishing machine as described in claim 1, wherein the multiple electromagnetic magnets are arranged on the tube edge of the magnetic grinding container along a first height interval. A magnetic grinding and polishing machine as described in claim 2, wherein the plurality of electromagnetic magnets are arranged at intervals along a second height on the tube edge of the magnetic grinding container, and the second height is higher than the first height. A magnetic grinding and polishing machine as described in claim 1, wherein the control device includes a first control unit, a second control unit and a plurality of DC power supply units, the first control unit is connected to the magnetic disk motor to control the magnetic disk motor to drive the permanent magnetic disk to rotate, the plurality of DC power supply units are connected to the second control unit and the plurality of electromagnets, and the second control unit is used to control the plurality of DC power supply units to supply power to the plurality of electromagnets so that the adjacent plurality of electromagnets produce different magnetic poles. A magnetic grinding and polishing machine as described in claim 4, wherein the multiple electromagnetic magnets generate different magnetic poles including each electromagnetic magnet switching its magnetic pole over a time period. A magnetic grinding and polishing machine as described in claim 5, wherein the switching of magnetic poles includes a delay time. A magnetic grinding and polishing machine as described in claim 4, wherein the control device includes a human-machine interface connecting the first control unit and the second control unit. A magnetic grinding and polishing machine as described in claim 1, wherein the permanent magnetic disk includes a disk body and a plurality of permanent magnets, and the plurality of permanent magnets are arranged on the disk body. A magnetic grinding and polishing machine as described in claim 1, wherein each of the multiple electromagnetic irons includes an iron core and a coil, the coil is wound around the iron core, and the iron core has a fixing hole.

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