Multifunctional flexible magnetic particle grinding equipment

Abstract

The utility model relates to multifunctional flexible magnetic particle grinding equipment, an electromagnetic grinding unit comprises special iron cores, coils, a supporting seat and a clamp, the special iron cores are flexibly connected in a chain link type row, the special iron cores are attached to the surface of a workpiece according to the shape of the workpiece, the coils are connected to the special iron cores, the coils are connected with an electric control unit, and the electric control unit is connected with the supporting seat. The clamps are arranged on the side faces of the two sides of the grinding box body, the clamp on one side is fixed to the side face of the grinding box body through a reserved groove, and the clamp on the other side moves in a groove sliding way in the grinding box body through a supporting plate. And the machining efficiency is improved, the cost is saved, the application range is wide, pressure can be monitored in real time and accurately measured, noise is low, pollution is avoided, safety and reliability are achieved, and automatic work can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible grinding, in particular to a multifunctional flexible magnetic particle grinding device. Background Art

[0002] With the progress in the field of mechanical manufacturing, more and more high-precision thin plates and thin-walled tubes and other structural parts are widely used in the aviation, aerospace and other industries. Ultra-precision machining technology has now become the most important part of the mechanical manufacturing industry. However, traditional grinding processing generally requires special machine tools and equipment to achieve, with high processing costs, low processing slopes, limited processing accuracy, and difficulty in adapting to new materials and complex processes. It often cannot meet the requirements for processing surfaces with complex curvature changes.

[0003] Patent with announcement number CN 214186719U: A curved surface grinding device, which drives the second feed shaft to rotate to achieve the axial displacement of the tool on the second feed shaft, thereby achieving the change of the position of the tool relative to the workpiece to complete the curved surface processing. However, it is a modified machine tool with high processing cost and uncontrollable processing accuracy. The processing degree of complex curved surfaces and the inner wall of thin-walled tubes is limited, and the maintenance requirements for the working environment are high. Patent with announcement number CN 215789071U: An automatic grinding and polishing equipment for grinding and polishing special-shaped curved surfaces, which drives the mounting disk to rotate around its own axis through a driving device, so that the grinding block grinds the parts. This process is uncontrollable, and the grinding tool has a relatively precise requirement for the distance to the workpiece, otherwise it will affect the grinding accuracy, and it is impossible to process large workpieces and complex curved surfaces. In addition, the complex device has high requirements for the working environment. Summary of the invention

[0004] In order to solve the technical difficulties existing in the existing workpiece grinding devices in the background technology, the utility model provides a multifunctional flexible magnetic particle grinding equipment, which utilizes the characteristics of the flexible structure of the special iron core itself to achieve perfect fitting of various flat plates, curved plates, grooved plates and thin-walled tubes, and the abrasive particles on the surface of the workpiece are rolled by the continuous conversion of the electromagnetic field of the coil on the special iron core, so as to achieve the grinding processing of the flat surface, curved surface, grooved surface of the non-magnetic thin plate and the inner surface of the thin-walled tube. The operation is simple, the processing efficiency is improved, the cost is saved, and the application range is wide. When grinding the workpiece, the abrasive particle processing route and processing speed can be controlled by adjusting the magnetic field to meet the actual requirements. This device only inputs direct current without other interference, and is equipped with a pressure tester, which can monitor the pressure in real time and perform precise measurement. It has low noise, no pollution, is safe and reliable, and can realize automatic work.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A multifunctional flexible magnetic particle grinding equipment comprises an electromagnetic grinding unit and an electric control unit. The electromagnetic grinding unit is arranged in a grinding box and the grinding operation is controlled by the electric control unit. The electromagnetic grinding unit comprises a special iron core, a coil, a support seat and a clamp. The special iron core is flexibly connected in a chain link manner. The special iron core fits on the surface of the workpiece according to the shape of the workpiece. The chain links of the special iron core are connected by fixed plugs. A plurality of coils are connected to the special iron core, and the coils are connected to the electric control unit. A support seat is arranged at the lower part of the special iron core. The support seat is a telescopic structure. A base track for movement is arranged at the bottom of the support seat. The clamp is arranged on both sides of the grinding box. One side clamp is fixed to the side of the grinding box through a reserved groove, and the other side clamp moves in the groove slide in the grinding box through a support plate.

[0007] Furthermore, the multifunctional flexible magnetic particle grinding equipment also includes a sliding door, which is arranged on the front side of the grinding box, and a front door glass and a handle are arranged on the sliding door.

[0008] Furthermore, an observation glass is provided on the top of the grinding box.

[0009] Furthermore, a touch screen is arranged on the outside of the grinding box.

[0010] Furthermore, a pressure tester is arranged between the special iron core and the support seat.

[0011] Furthermore, the grinding box body is provided with hanging ears for fixing the special iron core on both sides.

[0012] Furthermore, a thermometer is arranged in the grinding box.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1) The electronic control unit controls the magnitude and direction of the current in the coil to achieve control of the strength and direction of the machining magnetic field. The magnetic field controls the movement of the abrasive particles. The abrasive particles fit perfectly with the surface of the workpiece and move at a certain speed to complete the grinding process of the workpiece without other interference. It can achieve precise control and measurement of the cutting force to reduce errors.

[0015] 2) According to different needs, special grinding can be performed on different workpiece surfaces. The abrasive particles can be precisely controlled by changing the different parameters of the processing magnetic field. Precision processing can be performed according to the required processing range, surface roughness, etc. to achieve the best effect. There is no other interference affecting the magnetic field to prevent heat. In addition, a thermometer is provided for real-time monitoring to prevent danger.

[0016] 3) Only magnetic particle grinding technology is used, and chemical reactions such as rust and oxidation will not occur, achieving zero emissions and zero pollution. It has a simple structure, obvious cost advantages, and is easy to operate.

[0017] 4) The flexible-connected special iron core fits the workpiece surface perfectly for abrasive grinding, and can perform precision grinding on various complex planes, curved surfaces, grooved surfaces and thin-walled pipes made of different non-magnetic materials. It is easy to operate, improves processing efficiency, saves costs, and has a wide range of applications.

[0018] 5) The screen operation is simple and easy to understand. It is equipped with a pressure tester, which can monitor the pressure in real time and make accurate measurements. It has low noise, is safe and reliable, and can realize automated work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a multifunctional flexible magnetic particle grinding device described in the utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the reserved groove fixing fixture described in the utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the electromagnetic grinding unit described in the utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the grinding groove plate described in the utility model.

[0023] Figure 5 It is a schematic diagram of the structure of the grinding curved panel described in the utility model.

[0024] Figure 6 This is a schematic diagram of the structure of the ground thin-walled tube described in the utility model.

[0025] Figure 7 This is the electrical control principle diagram of the grinding groove plate and the curved plate described in the utility model.

[0026] Figure 8 This is the electrical control principle diagram of the thin-walled tube described in the utility model.

[0027] In the figure: 1-grinding box; 2-thermometer; 3-groove slide; 4-observation glass; 5-touch screen; 6-sliding door; 7-front door glass; 8-handle; 9-base track; 10-support seat; 11-coil; 12-special iron core; 13-fixed plug; 14-free end fixture; 15-support plate; 16-hanging ear; 17-reserved groove; 18-fixed end fixture; 19-electric control cabinet; 20-abrasive; 21-groove plate; 22-curved plate; 23-motor; 24-thin-walled tube. DETAILED DESCRIPTION

[0028] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0029] like Figure 1-Figure 6As shown, a multifunctional flexible magnetic particle grinding device includes an electromagnetic grinding unit and an electric control unit. The electromagnetic grinding unit is arranged in a grinding box 1 and the grinding operation is controlled by the electric control unit. The electromagnetic grinding unit includes a special iron core 12, a coil 11, a support seat 10 and a clamp. The special iron core 12 is flexibly connected in a chain link manner. The special iron core 12 fits on the surface of the workpiece according to the shape of the workpiece. The flexibly connected special iron core 12 fits perfectly with the surface of the workpiece. A fixed plug 13 is used to connect the chain link structure of the special iron core 12 to prevent it from falling off and ensure A certain free space for movement is provided. When grinding thin plates and curved plates 22, the chain link structure of the special iron core 12 is attached to the lower surface of the long thin plates and the curved plates 22. When processing thin-walled tubes 24, the special iron core 12 forms a ring around the thin-walled tube 24 and is fixed to the outside of the thin-walled tube 24. According to the width of the thin-walled tube 24, multiple special iron cores 12 with circular chain link structures are connected in parallel on the outside. Multiple coils 11 are connected to the special iron core 12, and the coils 11 are connected to the electric control unit to control the current size and direction in the coils 11 to realize the control of the strength and direction of the processing magnetic field. The magnetic field controls the movement of the abrasive grains 20, and the abrasive grains 20 are perfectly attached to the surface of the workpiece and have a certain moving speed to complete the grinding process of the workpiece. A support seat 10 is arranged at the lower part of the special iron core 12. The support seat 10 is a telescopic structure. The support seat 10 is mainly used to support the special iron core 12. A movable base track 9 is arranged at the bottom of the support seat 10. One or more support seats 10 can be moved according to the size and width of the workpiece to cooperate with the support of the workpiece and the special iron core 12; the clamp is arranged on both sides of the grinding box 1, and one side is a fixed end clamp 18 through The reserved groove 17 is fixed on the side of the grinding box 1, and the free end clamp 14 on the other side moves in the groove slide 3 in the grinding box 1 through the support plate 15. The groove slide 3 enables the free end clamp 14 connected to the support plate 15 and the fixed end clamp 18 on the other side to cooperate to clamp workpieces of different lengths. When processing the thin-walled tube 24, the free end clamp 14 can be equipped with a motor 23 placed on the support plate 15 and connected to the electric control cabinet 19. The reserved groove 17 is used to assemble the fixed end clamp 18, and the fixed end clamp 18 can be assembled in one or more reserved grooves 17 as required.

[0030] like Figure 1-Figure 2 As shown, further, the multifunctional flexible magnetic particle grinding equipment also includes a sliding door 6, which is arranged on the front side of the grinding box 1, and a front door glass 7 is arranged on the sliding door 6. A handle 8 is arranged on the sliding door 6. The sliding door 6 is used to prevent internal cutting splashes and loading and unloading of materials, and the front door glass is conducive to observing the grinding condition of the workpiece.

[0031] like Figure 1 As shown, further, an observation glass 4 is provided on the top of the grinding box 1 to observe the grinding effect of the workpiece.

[0032] like Figure 1As shown, further, a touch screen 5 is arranged on the outer side of the grinding box 1.

[0033] Furthermore, a pressure tester is provided between the special iron core 12 and the support seat 10 .

[0034] Furthermore, the grinding box 1 is provided with lugs 16 on both sides for fixing the special iron core 12 , and when grinding a long thin plate workpiece or a curved plate 22 , the special iron core 12 is fixed to the lugs 16 on both sides.

[0035] like Figure 1 As shown, further, a thermometer 2 is arranged in the grinding box 1, and the thermometer 2 and the pressure tester on the supporting base 10 are mainly used for real-time monitoring.

[0036] The processing method of the multifunctional flexible magnetic particle grinding device comprises the following processing steps:

[0037] 1) Inputting parameters such as magnetic field direction, cycle time, speed of magnetic particles 20 and processing time on the touch screen 5;

[0038] 2) The electronic control unit receives instructions from the touch screen 5, operates, and then controls the coil 11;

[0039] 3) When direct current is passed into the coil 11, a traveling wave magnetic field is generated and the abrasive particles are cut, generating electromotive force and current, which in turn interact with the magnetic field and act on the abrasive particles, thereby causing the abrasive particles 20 to move, and the speed is set according to the requirements;

[0040] 4) When processing the thin-walled tube 24 workpiece, it is also necessary to set the rotation speed and time of the thin-walled tube 24 in the forward and reverse directions on the touch screen, so as to further improve the grinding efficiency through the reverse movement of the abrasive particles 20 and the thin-walled tube 24.

[0041] 5) Thermometers and pressure testers will monitor in real time. If any abnormality is found, an alarm will be triggered and processing will be stopped immediately.

[0042] The operating process method of the multifunctional flexible magnetic particle grinding device comprises the following steps:

[0043] 1) Select an appropriate amount of abrasive and stir it evenly according to actual needs to make a grinding liquid;

[0044] 2) Turn on the device and enter instructions on the touch screen to move it to the initial test position;

[0045] 3) Place the workpiece in the designated position; adjust the position of the free end support plate 15 on the groove slide 3, adjust the appropriate size, fix the two ends of the workpiece between the free end fixture 14 and the fixed end fixture 18, and fit the special iron core 12 to the lower surface or outer surface of the workpiece;

[0046] 4) placing the abrasive particles 20 on the upper surface or inner surface of the workpiece according to the requirements, and separating the abrasive particles 20 and the special iron core 12 by the workpiece;

[0047] 5) Input processing parameters on the touch screen, including:

[0048] The magnetic field runs in the positive and negative directions + / -, which are the same as the arrangement direction of the coil 11. After a single run, it can run in the reverse direction according to the set parameters;

[0049] The abrasive particles 20 move in forward and reverse directions at speeds va and vb to control their moving speed;

[0050] The abrasive particle 20 moves in forward and reverse directions, ta and tb, and the time required for a single reciprocating movement to avoid splashing;

[0051] When processing the thin-walled tube 24, it is also necessary to set the clockwise and counterclockwise speeds vc and vd of the thin-walled tube 24 to control its rotation speed;

[0052] When processing the thin-walled tube 24, it is also necessary to set the clockwise and counterclockwise rotation times tc and td of the thin-walled tube 24, and to process the thin-walled tube 24 according to the requirements with the abrasive particles 20;

[0053] The single round trip time t controls the forward and reverse cycle time of the abrasive particles 20 as a whole;

[0054] 6) Start processing, the electric control unit energizes the coil. If the workpiece to be processed is a thin-walled tube 24, the electric control unit can also simultaneously start the additional motor 23 on the free end fixture 14 to further improve the grinding efficiency through the reverse movement of the abrasive particles 20 and the thin-walled tube 24.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

[0056] The following examples are implemented based on the technical solution of the utility model, and provide detailed implementation methods and specific operation processes, but the protection scope of the utility model is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.

[0057] [Example 1]

[0058] like Figure 1-Figure 4 , Figure 7As shown, for a slot plate 21 made of SUS304 with a size of 800mmx50mm and a thickness of 0.5mm, its surface is ground, fifteen coils 11 connected in threes are set on the special iron core 12, and the slot plate 21 is set above the special iron core 12. The chain link flexible structure of the special iron core 12 fits on the lower surface of the slot plate 21, and the ears 16 on both sides of the grinding box 1 are connected and fixed to the special iron core 12. The support base 10 is supported under the special iron core 12, and the support base 10 plays a supporting role. The non-magnetic slot plate 21 is clamped by the free end clamp 14 and the fixed end clamp 18. After the electromagnetic grinding unit receives the working parameters of the touch display screen 5, the magnetic field begins to change back and forth according to the set different speeds and times, driving the abrasive particles 20 to grind the non-magnetic slot plate 21; the specific implementation process is: start the equipment, enter the parameters on the touch display screen 5, and adjust the equipment to the initial state; select the average The diamond abrasive grains 20 have a particle size of 15 μm, and the diamond abrasive grains 20 are adhered to the bottom of the magnetic abrasive tool with a bottom radius of 6 mm and a thickness of 1 mm. The magnetic abrasive tool with irregular diamond abrasive grains 20 adhered to the bottom is placed on the groove plate 21, and the magnetic abrasive tool will automatically move to the position above the first special iron core 12 on the far left; the coil current is 0.5A, and the abrasive grains move forward at a set forward motion speed of 20 mm / s and a motion time of 30 s. After reaching the set value, the magnetic abrasive tool moves in the reverse direction as the magnetic field changes, and then automatically moves in the reverse direction at a set reverse motion speed of 25 mm / s and a motion time of 24 s. The cycle is repeated for 30 minutes, and the magnetic abrasive tool grinds the surface of the groove plate 21. The surface condition of the ground groove plate 21 is observed, and it is found that the surface roughness Ra of most local planes is reduced from 0.2 μm to 0.028 μm, and the surface processing texture, oxide scale and scratches can be evenly removed, and the grinding effect is good.

[0059] [Example 2]

[0060] like Figure 1-Figure 3 , Figure 5 , Figure 7As shown, for a curved panel 22 made of T2 pure copper with a length and width of 200mmx50mm and a thickness of 0.5mm, its surface is ground, two three-by-three connected coils 11 are arranged on a special iron core 12, and above the special iron core 12 is a non-magnetic curved panel 22, the special iron core fits the lower surface of the curved panel 22, the ears 16 on both sides of the grinding box 1 are connected to the special iron core 12, and the special iron core 12 is supported by the support base 10, one side of the support plate 15 is inserted into the groove slide 3 on the box 1, and can slide in the groove slide 3, the tail end of the free end clamp 14 is provided with a groove, the groove cooperates with the support plate 15, the free end clamp 14 can slide on the support plate 15, select a suitable position, and cooperate with the fixed end clamp 18 to clamp the non-magnetic curved panel 22. After the electromagnetic grinding unit receives the working parameters of the touch screen 5, the magnetic field begins to change according to the set parameters, driving the abrasive particles 20 to grind the non-magnetic curved panel 22. The specific operation process is: start the equipment, input the required parameters on the touch screen 5, and debug the equipment in the initial test state; select the Fe and Al2O3 mixed sintered abrasive particles 20 with an average particle size of 96μm; place the abrasive particles 20 on the grinding surface of the curved panel 22, and the abrasive particles 20 will automatically move to the top of the leftmost special iron core 12; the coil 11 is supplied with a current of 0.75A, and the abrasive particles are pressed according to the pressure. It moves forward at the set forward speed of 10 mm / s and the movement time of 15 s. When it reaches the set value, the magnetic field gradually changes, driving the magnetic particles 20 to move in the reverse direction. Then it automatically moves in the reverse direction at the set reverse speed of 25 mm / s and the movement time of 6 s, and repeats the cycle for 30 minutes. The surface condition of the ground curved plate 22 is observed, and it is found that the surface roughness Ra is reduced from 0.168 μm to 0.079 μm. Compared with the traditional grinding method, the workpiece surface processing texture, oxide scale and scratch removal efficiency is higher, the grinding effect is better, and the efficiency is higher.

[0061] [Example 3]

[0062] like Figure 1-Figure 3 , Figure 6 , Figure 8As shown, for a T2 pure copper thin-walled tube 24 with a thickness of 0.5 mm, a diameter of Ф8 mm and a length of 150 mm, the inner surface is ground. A plurality of three-to-three connected coils 11 are set on the special iron core 12, and the special iron core 12 uses its own chain-type flexible structure to form a circle and is connected and fixed with a fixed plug, so that the special iron core 12 can perfectly fit the workpiece, and a plurality of special iron cores 12 in the form of circles are connected in parallel on the outer circle of the thin-walled tube 24 as required, and the support base 10 provides support, and the appropriate support position of the support base 10 is adjusted, and the best grinding position is selected by using the flexible characteristics of the special iron core 12 itself and the elasticity of the support base 10, and the free end clamp 14 selects a suitable position in the groove slide 3 in the support plate 15 and the grinding box 1, and cooperates with the fixed end clamp 18 to clamp the non-magnetic thin-walled tube 24, and a motor 23 is installed behind the free end clamp 14 so that the non-magnetic thin-walled tube 24 can rotate. After the electromagnetic grinding unit receives the working parameters of the touch screen 5, the motor 23 rotates the thin-walled tube 24 according to the set parameters, and the magnetic field changes back and forth according to the set parameters, driving the abrasive particles 20 to process the workpiece. The thin-walled tube 24 and the abrasive particles 20 rotate relative to each other, and the grinding is faster. The specific implementation process is: start the equipment, enter the required parameters on the touch screen 5, and adjust the equipment to the initial test position; select the Fe and Al2O3 mixed sintered abrasive particles 20 with an average particle size of 120μm; place the abrasive particles 20 in the area to be processed of the thin-walled tube, and the abrasive particles 20 will automatically move to the position above the special iron core 12 of the magnetic position coil 11, and control the coil current and direction through the electronic control unit to control the change of the magnetic field of the special iron core in the coil position. The abrasive particles 20 will rotate and move along the tube wall in the thin-walled tube as the magnetic field changes; the thin-walled tube 24 rotates at a forward speed of 1000r / min, and the forward rotation time is 2mi n, the reverse rotation speed is 1500r / min and the reverse rotation speed is 3min. The abrasive particles rotate at the set forward motion speed of 30mm / s and the motion time is 4s. After reaching the set value, the magnetic field changes and drives the magnetic particles 20 to move in the reverse direction. Then it automatically moves at the set reverse motion speed of 20mm / s and reverse motion for 6s. This cycle is repeated for 0.5h. The two move relative to each other, and the grinding is faster. The inner surface of the thin-walled tube 24 is observed and the surface roughness Ra is reduced from 0.171μm to 0.098μm. The grinding effect is good, and the surface processing texture, oxide scale and scratches can be evenly removed.

Claims

1. A multifunctional flexible magnetic particle grinding device, comprising an electromagnetic grinding unit and an electric control unit, wherein the electromagnetic grinding unit is arranged in a grinding box and the grinding operation is controlled by the electric control unit, characterized in that: The electromagnetic grinding unit includes a special iron core, a coil, a support seat and a clamp. The special iron core is flexibly connected in a chain link manner. The special iron core fits the surface of the workpiece according to the shape of the workpiece. The chain links of the special iron core are connected by fixed plugs. Multiple coils are connected to the special iron core, and the coils are connected to the electronic control unit. A support seat is arranged at the lower part of the special iron core. The support seat is a telescopic structure. A base track for movement is arranged at the bottom of the support seat. The clamp is arranged on both sides of the grinding box. One side of the clamp is fixed to the side of the grinding box through a reserved groove, and the other side of the clamp moves in the groove slide in the grinding box through a support plate.

2. The multifunctional flexible magnetic particle grinding device according to claim 1, characterized in that: The multifunctional flexible magnetic particle grinding device also includes a sliding door, which is arranged on the front side of the grinding box body, and a front door glass and a handle are arranged on the sliding door.

3. The multifunctional flexible magnetic particle grinding device according to claim 1, characterized in that: An observation glass is arranged on the top of the grinding box.

4. The multifunctional flexible magnetic particle grinding device according to claim 1, characterized in that: A touch screen is arranged on the outside of the grinding box.

5. The multifunctional flexible magnetic particle grinding device according to claim 1, characterized in that: A pressure tester is arranged between the special iron core and the support seat.

6. The multifunctional flexible magnetic particle grinding device according to claim 1, characterized in that: The grinding box body has two side surfaces provided with hanging ears for fixing the special iron core.

7. The multifunctional flexible magnetic particle grinding device according to claim 1, characterized in that: A thermometer is arranged in the grinding box.

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