CN112676922B - Magnetic grinding device and method for vibrating composite elliptical motion - Google Patents
Magnetic grinding device and method for vibrating composite elliptical motion Download PDFInfo
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- CN112676922B CN112676922B CN202011541201.4A CN202011541201A CN112676922B CN 112676922 B CN112676922 B CN 112676922B CN 202011541201 A CN202011541201 A CN 202011541201A CN 112676922 B CN112676922 B CN 112676922B
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- 239000002131 composite material Substances 0.000 title description 5
- 230000001360 synchronised effect Effects 0.000 claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims abstract description 19
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 26
- 230000000694 effects Effects 0.000 claims description 15
- 230000003028 elevating effect Effects 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 12
- 230000005389 magnetism Effects 0.000 claims description 7
- 239000003082 abrasive agent Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
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- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 5
- 230000002153 concerted effect Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
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Abstract
A magnetic grinding device and method for vibrating compound elliptical motion are characterized by comprising an electric thrust cylinder (1), a lifting table (2), a permanent magnetic loop (3), a synchronous belt module (4), a voice coil motor (5), a clamp system (6) and a rack (7); the lifting platform (2) is sleeved on the support (7) and can move up and down along the rack (7) under the driving of the electric thrust cylinder (1), the permanent magnetic loop (3) is installed at the lower part of the lifting platform (2) and synchronously lifted with the lifting platform, and the vertical reciprocating motion of magnetic abrasive particles in a workpiece is realized; the synchronous belt module (4) is installed on a workbench at the bottom of the rack (7), a base of the voice coil motor (5) is installed on a sliding block of the synchronous belt module (4), the sliding block is driven by the sliding block to reciprocate along the front and back directions of a horizontal plane, and a clamp system (6) for clamping workpieces is installed on the voice coil motor (5) and driven by the voice coil motor (5) to realize high-frequency transverse vibration, so that the synchronous belt module belongs to main cutting motion. The invention has novel design, compact structure and easy operation and regulation.
Description
Technical Field
The invention relates to the technical field of vibration-assisted magnetic grinding, in particular to a method for grinding an inner cavity of a workpiece by using a magnetic grinding material under the combined action of a magnetic field, high-frequency vibration and an elliptical cutting effect.
Background
With the development of ultra-precision technology, 3D printed products with complex internal cavities, represented by a special-shaped waveguide, have been widely applied to the radio fields of radio communication, radar, navigation, and the like. The 3D printing technology can realize rapid forming and free manufacturing, but is influenced by factors such as a step effect, a spheroidizing effect and powder adhesion, and the inner surface of a formed workpiece is rough. The traditional surface finishing technology is difficult to grind and polish the inner wall because of the limitation of the process condition.
At present, the magnetic grinding technology has high adaptivity, and can play a good grinding and polishing effect on inner holes, blind grooves, blind cavities, dead corners and tiny cracks of workpieces. However, the simple magnetic grinding technology has the defects of low processing efficiency, uneven processing quality, difficult adjustment of processing clearance and the like. Therefore, there is a need for an improved composite magnetic polishing apparatus and method.
Disclosure of Invention
The invention aims to design a magnetic grinding device with vibration composite elliptical motion and simultaneously provide a corresponding grinding method aiming at the problems of low processing efficiency and uneven processing quality of the existing single magnetic grinding device. The invention utilizes the magnetic abrasive to press the surface of a workpiece under the action of magnetic force and realizes material removal under high-frequency vibration. The coordinated motion relation of adjusting electric thrust cylinder and hold-in range module can make the cutting orbit of grit present complicated ellipse, and then makes to grind more evenly, high-efficient.
One of the technical schemes of the invention is as follows:
a magnetic grinding device for vibrating compound elliptical motion is characterized by comprising an electric thrust cylinder 1, a lifting table 2, a permanent magnet loop 3, a synchronous belt module 4, a voice coil motor 5, a clamp system 6 and a rack 7; the lifting platform 2 is sleeved on the support 7 and can move up and down along the rack 7 under the driving of the electric thrust cylinder 1, and the permanent magnet loop 3 is arranged at the lower part of the lifting platform 2 and can synchronously lift up and down with the lifting platform to realize the vertical reciprocating motion of magnetic abrasive particles in a workpiece; the synchronous belt module 4 is arranged on a workbench at the bottom of the rack 7, a base of the voice coil motor 5 is arranged on a sliding block of the synchronous belt module 4 and reciprocates along the front and back directions of a horizontal plane under the driving of the sliding block, and a clamp system 6 for clamping a workpiece is arranged on the voice coil motor 5 and realizes high-frequency transverse vibration under the driving of the voice coil motor 5, belonging to main cutting motion; under the combined action under magnetic field and high frequency vibration, the magnetic abrasive material in the work piece realizes getting rid of work piece material, adjusts electric thrust cylinder 1 and hold-in range module 4 concerted motion, makes the grit in the work piece produce the effect of oval cutting, and then makes and grind more even, high-efficient.
The permanent magnetic circuit comprises a locking slide block 8, a bent plate 9, a magnetic pole array 10 and a guide rail 11, wherein the guide rail 11 is fixedly arranged at the bottom of the lifting platform 2, the locking slide block 8 with a positioning and locking function is arranged in the guide rail 11, a top plate of the bent plate 9 is fixedly connected with the locking slide block 8, permanent magnets 101 are arranged at intervals and form the magnetic pole array 10 on a magnetic conduction plate 102, and a magnetic field area with variable intensity is formed in a space nearby the permanent magnets; the distance between the workpiece and the magnetic pole can be changed by adjusting the position of the locking slide block 8 on the guide rail 11; the magnetic conduction plate 102 is installed on the vertical plate of the bent plate 9 and the position of the magnetic conduction plate is adjustable.
The workpiece is fixed on a power output platform of the voice coil motor under the clamping of the clamp system; the workpiece can generate transverse high-frequency vibration by adjusting the voice coil motor driver; under the combined action of a magnetic field and high-frequency vibration, the magnetic grinding materials in the workpiece remove the workpiece materials.
The slider of hold-in range module links to each other with voice coil motor's base, gives the magnetic grinding material increase lateral motion weight in the work piece when horizontal high-frequency vibration.
Under the combined action of a magnetic field and high-frequency vibration, the magnetic grinding materials in the workpiece remove the workpiece materials; the vertical and the fore-and-aft horizontal movement components have synergistic effect, so that the abrasive particles can generate an elliptical cutting effect, and the grinding is more uniform and efficient.
The second technical scheme of the invention is as follows:
a magnetic grinding method for vibrating compound elliptical motion is characterized by comprising the following steps:
1) magnetic grinding materials are loaded into a workpiece, and the workpiece is clamped on a voice coil motor through a clamp system;
2) adjusting the position of a locking slide block 8 on the permanent magnetic loop 3 to determine a proper machining gap;
3) starting the voice coil motor, the synchronous belt module 4 and the electric thrust cylinder in sequence, and processing;
4) the grinding material in the workpiece is subjected to relative displacement with the inner wall of the workpiece under the comprehensive action of a magnetic field, high-frequency vibration and an elliptical cutting effect; the magnetic brush continuously scratches and collides the inner surface of the workpiece, so that the inner surface is ground and polished;
5) and after the processing is finished, all power supplies are turned off, and the workpiece is taken down to be cleaned and dried.
The invention has the beneficial effects that:
the lifting platform drives the permanent magnet loop 3 on the lifting platform to vertically reciprocate under the action of the electric thrust cylinder; the clamp system 6 is driven by the voice coil motor 5 to realize high-frequency transverse vibration; the base of the voice coil motor is connected with the synchronous belt sliding block, and the clamp system can realize transverse reciprocating motion. The magnetic abrasive in the workpiece is pressed to the surface of the workpiece under the action of magnetic force, and material removal is realized under high-frequency vibration. The coordinated motion relation of adjusting electric thrust cylinder and hold-in range module can make the cutting orbit of grit present complicated oval orbit, and then makes and grinds more evenly, high-efficient.
The invention has novel design, compact structure and easy operation and regulation.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the permanent magnetic circuit structure of the present invention.
Fig. 3 is a schematic view of the housing of the present invention.
Fig. 4 is a schematic view of a workpiece to be processed according to the present invention.
Fig. 5 is a schematic cross-sectional structure of fig. 4.
In the figure: 1-electric thrust cylinder, 2-elevating platform, 3-permanent magnetism return circuit, 4-hold-in range module, 5-voice coil motor, 6-work piece and anchor clamps system, 7-frame, 8-locking slider, 9-bent plate, 10-magnetic pole array, 11-guide rail, 12-last backup pad, 13-lower support pad, 14-guide pillar.
Detailed Description
The invention will be further described with reference to the accompanying drawings:
the first embodiment.
As shown in fig. 1-5.
A magnetic grinding device for vibrating composite elliptical motion comprises an electric thrust cylinder 1, a lifting table 2, a permanent magnet loop 3, a synchronous belt module 4 (which is a conventional mechanical accessory and can be designed and manufactured by self, and generally consists of a motor, a sliding block and a synchronous belt), a voice coil motor 5 (which can be directly purchased from the market), a clamp system 6 (which can be designed and manufactured by self according to the structural shape of a workpiece by utilizing the prior art) and a frame 7, wherein the electric thrust cylinder 1 is shown in figure 1; the permanent magnetic circuit is shown in fig. 2 and comprises a locking slide block 8, a bent plate 9, a magnetic pole array 10 and a guide rail 11, wherein the guide rail 11 is fixedly arranged at the bottom of the lifting platform 2, the locking slide block 8 with a positioning and locking function is arranged in the guide rail 11, the top plate of the bent plate 9 is fixedly connected with the locking slide block 8, permanent magnets 101 are distributed at intervals and form the magnetic pole array 10 on a magnetic conduction plate 102, and a magnetic field area with variable intensity is formed in a space nearby the permanent magnets; the distance between the workpiece and the magnetic pole can be changed by adjusting the position of the locking slide block 8 on the guide rail 11; the magnetic conductive plate 102 is installed on the vertical plate of the bent plate 9 and the position of the magnetic conductive plate is adjustable, and the bent plate 9 and the magnetic conductive plate 102 are provided with long grooves for adjusting the position, as shown in fig. 2. The frame 7 is as shown in fig. 3, it includes backup pad 12, bottom suspension fagging 13 and direction stand 14, electric thrust cylinder 1 installs on backup pad 12, hold-in range module 4 installs on bottom suspension fagging 13, elevating platform 2 suit is on direction stand 14, electric thrust cylinder 1's lower extreme links to each other with elevating platform 2, electric thrust cylinder 1 drives elevating platform 2 and reciprocates, and then drives the permanent magnetism return circuit 3 of 2 lower part installations of elevating platform and produces vertical reciprocating motion, thereby make the magnetic abrasive material in the work piece produce vertical motion component. The lifting platform 2 is sleeved on the support 7 and can move up and down along the rack 7 under the driving of the electric thrust cylinder 1, and the permanent magnet loop 3 is arranged at the lower part of the lifting platform 2 and can synchronously lift up and down with the lifting platform to realize the vertical reciprocating motion of magnetic abrasive particles in a workpiece; the synchronous belt module 4 is arranged on a workbench at the bottom of the rack 7, the base of the voice coil motor 5 is arranged on a sliding block of the synchronous belt module 4 and driven by the sliding block to reciprocate along the front-back direction of a horizontal plane, and the clamp system 6 for clamping a workpiece is arranged on the voice coil motor 5 and driven by the voice coil motor 5 to realize high-frequency transverse vibration, belonging to main cutting motion; under magnetic field and high-frequency vibration's combined action, the removal of work piece material is realized to the magnetism abrasive material in the work piece, adjusts electric thrust cylinder 1 and hold-in range module 4 concerted movement, makes the grit in the work piece produce the effect of oval cutting, and then makes and grind more even, high-efficient.
The working principle of the invention is as follows:
the clamp system 6 realizes high-frequency transverse vibration under the driving of the voice coil motor 5, and belongs to main cutting motion; the lifting platform 2 drives the permanent magnet loop 3 on the lifting platform to vertically reciprocate under the action of the electric thrust cylinder 1; the base of the voice coil motor is connected with the sliding block of the synchronous belt module 4, and the clamp system can realize transverse reciprocating motion. Under the combined action of the magnetic field and the high-frequency vibration, the magnetic abrasive in the workpiece (shown in figures 4 and 5) realizes the removal of the workpiece material. The coordinated motion relation of adjusting electric thrust cylinder and hold-in range module can make the grit produce the effect of oval cutting, and then makes to grind more even, high-efficient.
The permanent magnetic loop comprises a locking sliding block, a bent plate, a magnetic pole array and a guide rod. The permanent magnets are arranged on the magnetic conduction plate at intervals to form a magnetic pole array 10, and a magnetic field domain with variable intensity is formed in the space near the magnetic pole array.
The workpiece to be processed is shown in fig. 4 and 5, and is fixed on a power output table of a voice coil motor by a clamp system. The workpiece can generate transverse high-frequency vibration by adjusting the voice coil motor driver. Under the combined action of a magnetic field and high-frequency vibration, the magnetic grinding materials in the workpiece remove the workpiece materials. The slider of hold-in range guide rail links to each other with voice coil motor's base, increases the lateral motion weight for the magnetism abrasive material when horizontal high-frequency vibration. Under the combined action of a magnetic field and high-frequency vibration, the magnetic grinding materials in the workpiece remove the workpiece materials. The vertical and transverse motion components have synergistic effect, so that the abrasive particles can generate an elliptical cutting effect, and the grinding is more uniform and efficient.
Example two.
A magnetic grinding method for vibrating compound elliptical motion specifically comprises the following steps:
1) the magnetic grinding material is loaded into a workpiece, and the workpiece is clamped on the voice coil motor through a clamp system;
2) adjusting the position of a locking slide block 8 on the permanent magnetic loop 3 to determine a proper machining gap;
3) starting the voice coil motor, the synchronous belt module 4 and the electric thrust cylinder in sequence for processing;
4) the grinding material in the workpiece is subjected to relative displacement with the inner wall of the workpiece under the comprehensive action of a magnetic field, high-frequency vibration and an elliptical cutting effect; the magnetic brush continuously scratches and collides the inner surface of the workpiece, so that the inner surface is ground and polished;
5) and after the processing is finished, all power supplies are turned off, and the workpiece is taken down to be cleaned and dried.
The device provided by the invention combines magnetic field, vibration and elliptical cutting effect, the grinding track is more complex and uniform, and the device has the advantages of reasonable design, simple structure, high processing efficiency and easiness in adjustment and assembly.
The present invention is not concerned with parts which are the same as or can be implemented using prior art techniques.
Claims (5)
1. A magnetic grinding device for vibrating compound elliptical motion is characterized by comprising an electric thrust cylinder (1), a lifting table (2), a permanent magnetic loop (3), a synchronous belt module (4), a voice coil motor (5), a clamp system (6) and a rack (7); the lifting platform (2) is sleeved on the rack (7) and can move up and down along the rack (7) under the driving of the electric thrust cylinder (1), the permanent magnetic loop (3) is installed at the lower part of the lifting platform (2) and synchronously lifted with the lifting platform, and the vertical reciprocating motion of magnetic abrasive particles in a workpiece is realized; the synchronous belt module (4) is arranged on a workbench at the bottom of the rack (7), a base of the voice coil motor (5) is arranged on a sliding block of the synchronous belt module (4), and is driven by the sliding block to reciprocate along the front-back direction of a horizontal plane, and a clamp system (6) for clamping a workpiece is arranged on the voice coil motor (5) and is driven by the voice coil motor (5) to realize high-frequency transverse vibration, belonging to main cutting motion; under the combined action of a magnetic field and high-frequency vibration, the magnetic grinding materials in the workpiece are removed, and the electric thrust cylinder (1) and the synchronous belt module (4) are regulated to move cooperatively, so that abrasive particles in the workpiece generate an elliptical cutting effect, and further, the grinding is more uniform and efficient; the permanent magnetic circuit comprises a locking slide block (8), a bent plate (9), a magnetic pole array (10) and a guide rail (11), wherein the guide rail (11) is fixedly arranged at the bottom of the lifting platform (2), the locking slide block (8) with a positioning and locking function is arranged in the guide rail (11), a top plate of the bent plate (9) is fixedly connected with the locking slide block (8), permanent magnets (101) are distributed at intervals to form the magnetic pole array (10) with a magnetic conduction plate (102), and a magnetic field area with variable intensity is formed in a space near the magnetic pole array; the distance between the workpiece and the magnetic pole can be changed by adjusting the position of the locking slide block (8) on the guide rail (11); the magnetic conduction plate (102) is arranged on the vertical plate of the bent plate (9) and the position of the magnetic conduction plate is adjustable; frame (7) are including last backup pad (12), bottom suspension fagging (13) and direction stand (14), install on last backup pad (12) electric thrust cylinder (1), hold-in range module (4) are installed on bottom suspension fagging (13), elevating platform (2) suit is on direction stand (14), the lower extreme and elevating platform (2) of electric thrust cylinder (1) link to each other, electric thrust cylinder (1) drive elevating platform (2) reciprocate, and then drive permanent magnetism return circuit (3) of elevating platform (2) lower part installation and produce vertical reciprocating motion, thereby make the magnetic abrasive material in the work piece produce vertical motion component.
2. The magnetic grinding device for the vibration combined elliptical motion of claim 1, characterized in that the workpiece is fixed on a power output table of a voice coil motor under the clamping of the fixture system; the workpiece can generate transverse high-frequency vibration by adjusting the voice coil motor driver; under the combined action of a magnetic field and high-frequency vibration, the magnetic grinding materials in the workpiece remove the workpiece materials.
3. The magnetic grinder of claim 1, wherein the slide block of the timing belt module is connected to the base of the voice coil motor to add a lateral motion component to the magnetic abrasive in the workpiece while vibrating laterally at a high frequency.
4. The magnetic grinding device with the vibration compound elliptical motion according to claim 1, characterized in that under the compound action of the magnetic field and the high-frequency vibration, the magnetic grinding material in the workpiece realizes the removal of the workpiece material; the vertical and the fore-and-aft horizontal movement components have synergistic effect, so that the abrasive particles can generate an elliptical cutting effect, and the grinding is more uniform and efficient.
5. A magnetic grinding method of vibration compound elliptical motion based on the magnetic grinding device of vibration compound elliptical motion of claim 1, characterized in that it comprises the following steps:
1) magnetic grinding materials are loaded into a workpiece, and the workpiece is clamped on a voice coil motor through a clamp system;
2) adjusting the position of a locking slide block (8) on the permanent magnetic loop (3) to determine a proper machining gap;
3) starting the voice coil motor, the synchronous belt module (4) and the electric thrust cylinder in sequence, and processing;
4) the grinding material in the workpiece is subjected to relative displacement with the inner wall of the workpiece under the comprehensive action of a magnetic field, high-frequency vibration and an elliptical cutting effect; the magnetic brush continuously scratches and collides the inner surface of the workpiece, so that the inner surface is ground and polished;
5) and after the processing is finished, all power supplies are turned off, and the workpiece is taken down to be cleaned and dried.
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| CN202011541201.4A CN112676922B (en) | 2020-12-23 | 2020-12-23 | Magnetic grinding device and method for vibrating composite elliptical motion |
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| CN202011541201.4A CN112676922B (en) | 2020-12-23 | 2020-12-23 | Magnetic grinding device and method for vibrating composite elliptical motion |
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| CN113319730B (en) * | 2021-06-01 | 2022-06-24 | 南京航太机电有限公司 | Magnetic grinding device and method for pipe fitting with complex inner cavity |
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| JPS5458297A (en) * | 1977-10-18 | 1979-05-10 | Sumitomo Metal Ind Ltd | Surface grinding method of non-magnetic tube and surface grinding device being used in this method |
| US6139407A (en) * | 1997-01-30 | 2000-10-31 | Kyoei Denko Co., Ltd. | Method for processing using beam of magnetic line of force, apparatus for carrying out said method, and carriage member for hard disk drive processed by said method |
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