A soft ferrite magnetic core grinding device and a grinding method

Abstract

The present invention discloses a soft ferrite magnetic core grinding device and a grinding method, including a liquid guide disc cover, a driving cylinder, and a grinding disc detachably installed at the end of the driving cylinder. The surface of the grinding disc is provided with an installation groove, and a plurality of discharge grooves extending to be flush with the outer wall of the grinding disc are formed on the inner side wall of the installation groove. The present invention can achieve the purpose of synchronous flushing during the process of the grinding disc grinding the surface of the workpiece through the cooperation of the liquid guide disc cover and the discharge grooves. During implementation, external liquid is directly guided into the fixed column tube, and at the same time, the driving cylinder is guided by a driver to drive the grinding disc to grind the workpiece. During the process of the grinding disc grinding the workpiece, waste materials will be ground out and guided into the discharge grooves. The liquid guide disc cover can rotate together with the grinding disc. Therefore, when the waste materials enter the discharge grooves, the liquid in the liquid guide disc cover will be thrown out, thereby flushing out the waste materials in the discharge grooves.

Description

Technical Field

[0001] The present invention relates to the technical field of ferrite cores, and particularly relates to a grinding device and a grinding method for soft ferrite cores. Background Art

[0002] Soft ferrite, as the name implies, is a magnetic material, and its application feature is "magnetic conduction". Just like metal conduction, there are some materials that are magnetic conductive, and we call them magnetic materials. The soft magnet itself has no magnetism, and only when an external energized solenoid is applied, a magnetic field will be generated. When the external current is removed, the magnetic field will no longer exist. Soft ferrite is a ferrimagnetic oxide with Fe2O3 as the main component, and is produced by powder metallurgy method. There are several types such as Mn-Zn, Cu-Zn, Ni-Zn, etc. Among them, the output and usage of Mn-Zn ferrite are the largest. The resistivity of Mn-Zn ferrite is low, 1-10 ohm / m, and it is generally used at frequencies below 100 kHz. The resistivity of Cu-Zn and Ni-Zn ferrites is 102-104 ohm / m, and the loss is small in the radio frequency band of 100 kHz to 10 MHz, and it is mostly used in radio antenna coils and radio intermediate frequency transformers. When grinding a soft ferrite core, both ends need to be ground. In the traditional grinding process, the soft ferrite core needs to be flipped, which affects the grinding efficiency.

[0003] In view of this problem, in the prior art such as the patent document with the application number CN202210321701.X, it discloses a grinding device and a grinding method for soft ferrite cores, which can realize that the soft ferrite core body penetrates through the limiting through hole and contacts the upper end of the feeding support plate, and then the soft ferrite core body is conveyed into the grinding cavity through the conveying belt. The inner top end and the inner bottom end of the grinding cavity simultaneously grind the upper end and the lower end of the soft ferrite core body. During the grinding process, the conveying of the conveying belt enables longitudinal grinding between the soft ferrite core body and the grinding cavity, and the rotation of the high-toughness grinding belt enables transverse grinding between the soft ferrite core body and the grinding cavity, so as to perform double grinding on the upper end and the lower end of the soft ferrite core body, and greatly improve the grinding efficiency while being able to grind both ends of the soft ferrite core body.

[0004] And the patent document with the application number CN201220369896.7, which discloses a soft ferrite core grinding device with an automatic turning function, realizes grinding the bottom and the surface simultaneously in one process by setting a rotating impeller that can automatically turn the soft ferrite core, greatly reducing the labor cost and the additional material cost. The present invention effectively solves the problem of completing grinding the surface and the bottom at one time on the basis of the existing grinding equipment, saves the equipment cost and the expenditure of auxiliary materials, and at the same time greatly reduces the labor cost.

[0005] However, the above operations have limitations when faced with waste residue on the surface of the magnetic core. For example, during the grinding process of the magnetic core workpiece, waste residue will remain on the surface of the magnetic core workpiece. Especially in the central area of the magnetic core grinding, since the grinding head is in close contact with the surface of the magnetic core workpiece during grinding, the waste residue ground by the grinding head will be pressed by the grinding head on the surface of the magnetic core workpiece. Although some waste residue will be carried out during the movement of the grinding head (part of the waste residue will be carried out by the edge of the rotating grinding head and the waste residue left when the grinding head moves from the current processing area to the next processing area), the area pressed by the grinding head is difficult to quickly remove due to the waste residue being pressed by the grinding head, so there will be waste residue remaining on the surface of the workpiece, resulting in scratches on the processed surface of the magnetic core.

[0006] Therefore, in the soft ferrite magnetic core grinding device in the prior art, when in use, it is easy for the grinding head to press the waste residue on the surface of the magnetic core workpiece, resulting in a certain probability of scratching on the surface of the magnetic core workpiece. Summary of the Invention

[0007] The purpose of the present invention is to provide a soft ferrite magnetic core grinding device and a grinding method to solve the technical problem that in the prior art, when in use, it is easy for the grinding head to press the waste residue on the surface of the magnetic core workpiece, resulting in a certain probability of scratching on the surface of the magnetic core workpiece.

[0008] To solve the above technical problems, the present invention specifically provides the following technical solutions.

[0009] A soft ferrite magnetic core grinding device includes a liquid guide disk cover, a driving cylinder, and a grinding disk detachably installed at the end of the driving cylinder. The grinding disk can be driven by the driving cylinder to rotate to polish the surface of the workpiece. An installation groove is provided on the surface of the grinding disk, and a plurality of lead-out grooves extending to be flush with the outer side wall of the grinding disk are opened on the inner side wall of the installation groove; the liquid guide disk cover is arranged in the installation groove, and a plurality of liquid outlet heads are provided at the edge of the liquid guide disk cover, and each liquid outlet head is respectively arranged in one-to-one correspondence with each lead-out groove. A fixed column tube for injecting liquid into the liquid guide disk cover is sleeved in the driving cylinder; when the driving cylinder drives the grinding disk to polish the surface of the workpiece, the liquid guide disk cover injects liquid into all the lead-out grooves simultaneously.

[0010] As a preferred solution of the present invention, the liquid guide disk cover includes a closed disk body detachably and fixedly installed in the installation groove. All the liquid outlet heads are arranged along the outer side wall of the closed disk body. A spiral liquid extraction column is arranged in the closed disk body. One end of the spiral liquid extraction column is detachably and fixedly connected to the inner wall of the closed disk body far from the driving cylinder, and the other end of the spiral liquid extraction column extends into the fixed column tube; the spiral liquid extraction column can extract the liquid in the fixed column tube during the rotation of the closed disk body following the grinding disk.

[0011] As a preferred embodiment of the present invention, the liquid outlet head includes an insertion body installed on the outer side wall of the closed disk body. An inclined groove communicating with the inside of the closed disk body is provided in the insertion body, and one end of the insertion body away from the closed disk body extends into the corresponding outlet groove;

[0012] The inclined groove can guide the liquid to impact the inner side wall of the outlet groove.

[0013] As a preferred embodiment of the present invention, the grinding disk includes a grinding body and fixing blocks arranged on the surface of the grinding body. One side surface of the fixing block away from the grinding body is fixedly connected to the end of the driving cylinder, and the installation groove is arranged in the central area of the grinding body;

[0014] A fixing ring is detachably and fixedly installed on the outer side of the fixing block. A plurality of mounting frames are installed on the fixing ring. A cleaning brush is movably connected to the surface of each mounting frame, and each mounting frame corresponds to each outlet groove one by one.

[0015] As a preferred embodiment of the present invention, one end of the mounting frame away from the fixing block is inclined towards the side away from the driving cylinder. A sliding groove for restricting the cleaning brush is provided on the surface of the mounting frame, and the cleaning brush can slide along the sliding groove;

[0016] A support frame is arranged on the side of the mounting frame away from the cleaning brush. A traction block is penetrated through the support frame. One end of the traction block close to the mounting frame is fixedly connected to the cleaning brush, and a return member with an end surface connected to the traction block is sleeved on the side wall of the support frame.

[0017] As a preferred embodiment of the present invention, a liquid guide ring is sleeved on the outer side of the fixing block. A liquid ring clamping block sleeved on the outer side of the driving cylinder is installed on the liquid guide ring, and a plurality of threaded liquid guide heads are provided on the side wall of the liquid guide ring;

[0018] A plurality of spray heads for flushing the cleaning brush are threadedly connected to the threaded liquid guide heads, and the spray heads can rotate around the threaded liquid guide heads as the rotation center.

[0019] As a preferred embodiment of the present invention, a guiding strip is provided between every two adjacent outlet grooves, and all the guiding strips are arranged on the inner side wall of the closed disk body. The guiding strips are used to guide the liquid into the outlet grooves;

[0020] The thickness of the guiding strip is arranged in an increasing trend from the end close to the spiral liquid extraction column to the end away from the spiral liquid extraction column, and an inclined surface is provided on the surface of the guiding strip.

[0021] As a preferred solution of the present invention, it also includes a workpiece fixing frame for carrying the workpiece and guiding the workpiece to move to face the grinding body, a mounting cover is installed on the workpiece fixing frame, a limiting groove for limiting the driving cylinder is provided in the mounting cover, a height adjuster connected to the side wall of the driving cylinder and used for bringing the grinding body closer to or away from the workpiece is installed on the surface of the mounting cover, and a driver for rotating the driving cylinder is provided on the surface of the mounting cover.

[0022] In order to solve the above technical problems, the present invention further provides the following technical solution, a grinding method of a soft ferrite core grinding device, comprising the following steps:

[0023] S100, starting the driving cylinder and guiding the rotating driving cylinder to descend until the grinding body contacts the surface of the workpiece;

[0024] S200, lowering the grinding body position at a set height so that the current processed position of the workpiece surface is ground to the set height, and at the same time injecting liquid into the fixed column tube to guide the liquid to impact the inner wall of the lead-out groove and the workpiece contact area and flush the grinding waste entering the lead-out groove area out of the lead-out groove;

[0025] S300, cleaning the grinding waste flushed out of the guide groove by a cleaning brush that moves synchronously with the grinding body, and injecting liquid into the liquid guide ring to flush all the cleaning brushes;

[0026] S100, adjust the position of the workpiece, and repeat S100-S300 until the surface of the workpiece is ground.

[0027] As a preferred solution of the present invention, in step S300, the grinding waste flushed out of the guide groove is cleaned by a cleaning brush that moves synchronously with the grinding body, and liquid is injected into the liquid guide ring to rinse all the cleaning brushes. The specific steps are:

[0028] S301, guiding the cleaning brush that rotates synchronously with the grinding body to move toward a side away from the lead-out groove through the mounting frame, and pushing the cleaning brush to cling to the surface of the workpiece, so as to push the grinding waste that has rushed out of the lead-out groove away from the grinding body;

[0029] S302, guiding the liquid in the liquid guide ring to flush the cleaning brush;

[0030] S303, when the current processing position of the workpiece surface is ground to a set height, the grinding body stops moving, and the traction block moves with the cleaning brush toward one side of the guide groove and leaves the workpiece surface to change the position of the liquid in the liquid guide ring to flush the cleaning brush.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention can achieve the purpose of synchronous flushing during the process of the grinding disc polishing the surface of the workpiece through the cooperation of the liquid guide disc cover and the discharge groove. During specific implementation, the external liquid is directly guided into the fixed column tube, and at the same time, the driving column cylinder is guided by the driver to drive the grinding disc to polish the workpiece. During the process of the grinding disc polishing the workpiece, waste materials will be ground out and guided into the discharge groove. The liquid guide disc cover can rotate together with the grinding disc. Therefore, when the waste materials enter the discharge groove, the liquid in the liquid guide disc cover will be thrown out, thereby flushing out the waste materials in the discharge groove. Description of the Drawings

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0034] Figure 1 Schematic diagram of the liquid guide disc cover structure in the embodiment of the present invention;

[0035] Figure 2 Schematic diagram of the grinding disc structure in the embodiment of the present invention;

[0036] Figure 3 Schematic diagram of the liquid outlet head structure in the embodiment of the present invention;

[0037] Figure 4 For Figure 3 Enlarged view at position A in

[0038] Figure 5 Schematic diagram of the spiral liquid extraction column structure in the embodiment of the present invention;

[0039] Figure 6 Schematic diagram of the workpiece fixing frame structure in the embodiment of the present invention;

[0040] Figure 7 For Figure 6 Enlarged view at position B in

[0041] The reference numerals in the drawings are respectively represented as follows,

[0042] 1 - Liquid guide disc cover; 2 - Driving column cylinder; 3 - Grinding disc; 4 - Installation groove; 5 - Discharge groove; 6 - Liquid outlet head; 7 - Fixed column tube; 8 - Workpiece fixing frame;

[0043] 11 - Closed disc body; 12 - Spiral liquid extraction column;

[0044] 31 - Grinding body; 32 - Fixed block; 33 - Fixed ring; 34 - Mounting bracket; 35 - Cleaning brush; 36 - Sliding groove; 37 - Support frame; 38 - Traction block; 39 - Return member; 310 - Liquid guide ring; 311 - Liquid ring clamping block; 312 - Liquid spraying head; 313 - Threaded liquid guide head;

[0045] 51 - Guide bar; 61 - Insert body; 62 - Oblique groove. Detailed implementation manner

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] As Figures 1-7 shown, the present invention provides a soft ferrite magnetic core grinding device, including a liquid guide disc cover 1, a driving cylinder 2, and a grinding disc 3 detachably installed at the end of the driving cylinder 2. The grinding disc 3 can be driven by the driving cylinder 2 to rotate to polish the surface of the workpiece. An installation groove 4 is provided on the surface of the grinding disc 3, and a plurality of lead-out grooves 5 extending to be flush with the outer side wall of the grinding disc 3 are opened on the inner side wall of the installation groove 4.

[0048] The liquid guide disc cover 1 is arranged in the installation groove 4. A plurality of liquid outlet heads 6 are provided at the edge of the liquid guide disc cover 1, and each liquid outlet head 6 is respectively arranged in one-to-one correspondence with each lead-out groove 5. A fixed column tube 7 for injecting liquid into the liquid guide disc cover 1 is sleeved in the driving cylinder 2.

[0049] When the driving cylinder 2 drives the grinding disc 3 to polish the surface of the workpiece, the liquid guide disc cover 1 injects liquid into all the lead-out grooves 5 simultaneously.

[0050] The present invention can achieve the purpose of synchronous flushing during the process of the grinding disc 3 polishing the surface of the workpiece through the cooperation of the liquid guide disc cover 1 and the lead-out grooves 5. Specifically, during implementation, the external liquid is directly guided into the fixed column tube 7, and at the same time, the driving cylinder 2 is guided by a driver to drive the grinding disc 3 to polish the workpiece. During the process of the grinding disc 3 polishing the workpiece, waste materials will be ground out and guided into the lead-out grooves 5. The liquid guide disc cover 1 can rotate together with the grinding disc 3. Therefore, when the waste materials enter the lead-out grooves 5, the liquid in the liquid guide disc cover 1 will be thrown out, thereby flushing out the waste materials in the lead-out grooves 5.

[0051] In this embodiment, the grinding disc 3 can be a thickened grinding wheel, but the surface of this grinding wheel is provided with grooves, such as the diamond bowl-shaped grinding wheel in the prior art.

[0052] Because when the liquid enters the fixed column tube 7 and passes through the liquid guide disc cover 1, the liquid is likely to directly impact the liquid guide disc cover 1, causing the liquid guide disc cover 1 to vibrate. At this time, the grinding disc 3 is also likely to vibrate accordingly (because the grinding disc 3 and the liquid guide disc cover 1 are fixedly installed, and when the liquid guide disc cover 1 vibrates, the grinding disc 3 will also vibrate), which will affect the grinding of the workpiece surface. Therefore, preferably, the liquid guide disc cover 1 includes a closed disc body 11 that is detachably and fixedly installed in the installation groove 4. All the liquid outlet heads 6 are arranged along the outer side wall of the closed disc body 11. A spiral liquid extraction column 12 is provided in the closed disc body 11. One end of the spiral liquid extraction column 12 is detachably and fixedly connected to the inner wall of the closed disc body 11 on the side away from the driving column cylinder 2, and the other end of the spiral liquid extraction column 12 extends into the fixed column tube 7; the spiral liquid extraction column 12 can extract the liquid in the fixed column tube 7 during the rotation of the closed disc body 11 following the grinding disc 3.

[0053] In this embodiment, the closed disc body 11 and the inner wall of the installation groove 4 (that is, the grinding disc 3) can be connected by screws or threads. Here, screws are preferably used. When the closed disc body 11 is fully attached to the inner wall of the installation groove 4, a chamber for storing liquid is formed in the closed disc body 11, and the spiral liquid extraction column 12 and the closed disc body 11 can also be fixedly connected by screws or directly welded.

[0054] When the grinding disc 3 rotates, the closed disc body 11 and the spiral liquid extraction column 12 will rotate accordingly. At this time, since the end of the spiral liquid extraction column 12 directly extends into the fixed column tube 7, a spiral suction force will be formed when the spiral liquid extraction column 12 rotates, sucking the liquid in the fixed column tube 7 into the closed disc body 11, and guiding the liquid to spread spirally in the closed disc body 11 during the suction process, rather than directly impacting the inner wall of the closed disc body 11 and spreading, thereby reducing the probability of the closed disc body 11 shaking.

[0055] If the liquid ejected from the liquid outlet head 6 is parallel to the discharge groove 5, it is easy to occur that the waste chips in the discharge groove 5 are pushed by the grinding disc 3 and accumulate at the edge of the discharge groove 5 and at the position corresponding to the workpiece surface. Therefore, preferably, the liquid outlet head 6 includes an insertion body 61 installed on the outer side wall of the closed disc body 11. An inclined groove 62 communicating with the inside of the closed disc body 11 is provided in the insertion body 61. The end of the insertion body 61 away from the closed disc body 11 extends into the corresponding discharge groove 5; the inclined groove 62 can guide the liquid to impact the inner side wall of the discharge groove 5.

[0056] In this embodiment, as Figure 5As shown, it shows that the diagonal groove 62 is triangular, and the ejected liquid is a single stream, or it can be two or more parallel rectangles (presumably inclined), so that the ejected liquid is multiple streams. All the liquids will impact the inner wall of the discharge groove 5 after ejection. The more the ancient trees are ejected, that is, the more liquids come into contact with different areas of the inner wall of the discharge groove 5, so that the waste chips entering the discharge groove 5 will not easily be impacted by the liquid to one place and accumulate. The following takes the diagonal groove 62 being triangular as an example to illustrate, that is, when ejecting a large flow of liquid:

[0057] When the liquid enters the closed disk body 11, at this time the closed disk body 11 is always in a rotating state (the grinding disk 3 is performing a grinding operation). That is to say, the closed disk body 11 will quickly guide the liquid into the diagonal groove 62, and then directly rush into the discharge groove 5 from the insert body 61 and impact the inner wall of the discharge groove 5.

[0058] When the waste chips are washed out of the grinding disk 3, they are easily accumulated on the edge of the grinding disk 3. At this time, once the grinding disk 3 stops moving, it is easy for the waste chips to follow the liquid into the discharge groove 5, thus there is a risk of scratching. Therefore, preferably, the grinding disk 3 includes a grinding body 31 and fixing blocks 32 arranged on the surface of the grinding body 31. The surface of the fixing block 32 away from the grinding body 31 is fixedly connected to the end of the driving cylinder 2, and the installation groove 4 is arranged in the central area of the grinding body 31.

[0059] By setting the fixing block 32 and the grinding body 31 in this way, it is to ensure that the fixing block 32 will not be affected by the grinding body 31 when fixing the fixing ring 33 and the driving cylinder 2, and the diameter of the fixing block 32 is larger than that of the grinding body 31, so that the cleaning brush 35 will not hit the grinding body 31 during movement.

[0060] The fixing ring 33 is detachably and fixedly installed on the outside of the fixing block 32. A plurality of mounting frames 34 are installed on the fixing ring 33. Each cleaning brush 35 is movably connected to the surface of each mounting frame 34, and each mounting frame 34 is respectively arranged in one-to-one correspondence with each discharge groove 5.

[0061] When the driving cylinder 2 drives the fixing block 32 and the fixing ring 33 to rotate simultaneously, the grinding body 31 will perform a grinding operation, while the fixing ring 33 will drive all the mounting frames 34 and the cleaning brushes 35 to move, and perform a cleaning action on the outside of the grinding body 31. Because each mounting frame 34 is respectively arranged in one-to-one correspondence with each discharge groove 5, when the waste chips are washed out, they will immediately be swept away by the cleaning brush 35, avoiding the accumulation of the washed-out waste chips on the edge of the grinding body 31.

[0062] In this embodiment, the angle between the cleaning brush 35 and the grinding body 31 can be parallel to the discharge groove 5, or the end of the cleaning brush 35 away from the discharge groove 5 can be inclined in a direction opposite to the rotation direction of the grinding body 31, so that when the cleaning brush 35 sweeps the waste chips, it will push the waste chips to move gradually away from the grinding body 31.

[0063] Because the surface of the workpiece is lowered after being ground by the grinding body 31, the distance between the cleaning brush 35 and the workpiece surface increases, and it is difficult for the cleaning brush 35 to apply a cleaning force to the workpiece surface. Therefore, preferably, the end of the mounting frame 34 away from the fixed block 32 is inclined away from the driving cylinder 2. A sliding groove 36 for restricting the cleaning brush 35 is formed on the surface of the mounting frame 34, and the cleaning brush 35 can slide along the sliding groove 36.

[0064] A support frame 37 is arranged on the side of the mounting frame 34 away from the cleaning brush 35. A traction block 38 is penetrated through the support frame 37. One end of the traction block 38 close to the mounting frame 34 is fixedly connected to the cleaning brush 35. A return member 39 with an end surface connected to the traction block 38 is sleeved on the side wall of the support frame 37.

[0065] When the fixed block 32 is driven to rotate, a centrifugal force will be applied to the mounting frame 34 and the cleaning brush 35 in the sliding groove 36, throwing the cleaning brush 35 away from the grinding body 31. At this time, the cleaning brush 35 in the sliding groove 36 will slide along the sliding groove 36 and pull the traction block 38 to gradually move away from the fixed block 32. During the process of the cleaning brush 35 moving away, the cleaning brush 35 will gradually approach the workpiece surface, that is, increasing the contact force between the cleaning brush 35 and the workpiece surface, so that the cleaning brush 35 can clean the workpiece with a lowered surface or the attached waste chips.

[0066] When the fixed block 32 stops rotating, the return member 39 (a spring can be selected) will push the traction block 38 to reset, so that the cleaning brush 35 returns to its original position.

[0067] In order to prevent waste chips from adhering to the cleaning brush 35, preferably, a liquid guide ring 310 is sleeved outside the fixed block 32. A liquid ring block 311 sleeved outside the driving cylinder 2 is installed on the liquid guide ring 310. A plurality of threaded liquid guide heads 313 are arranged on the side wall of the liquid guide ring 310.

[0068] Each threaded liquid guide head 313 is correspondingly connected to a spray head 312 for flushing the cleaning brush 35, and the spray head 312 can rotate with the threaded liquid guide head as the rotation center.

[0069] When the fixed block 32 is driven to rotate and the cleaning brush 35 is pulled to perform a cleaning action, liquid will enter the liquid guide ring 310 and then be sprayed out from the spray head 312 to flush the cleaning brush 35.

[0070] In this embodiment, the angle between the liquid spraying head 312 and the cleaning brush 35 has the following embodiments:

[0071] The liquid spraying head 312 faces the cleaning brush 35 directly. At this time, the liquid spraying head 312 can spray a large amount of liquid towards the cleaning brush 35, making the waste chips more fluid when the cleaning brush 35 sweeps the waste chips.

[0072] The cleaning brush 35 is parallel to the discharge groove 5, and the liquid sprayed by the liquid spraying head 312 is sprayed obliquely in the direction opposite to the rotation direction of the grinding body 31. When the cleaning brush 35 sweeps the waste chips, there will be liquid impacting the waste chips to prevent the waste chips from being pushed by the cleaning brush 35 to form an accumulation phenomenon.

[0073] The cleaning brush 35 is inclined in the direction opposite to the rotation direction of the grinding body 31, and the liquid sprayed by the liquid spraying head 312 is sprayed obliquely in the direction opposite to the rotation direction of the grinding body 31. When the cleaning brush 35 sweeps the waste chips, there will be liquid pushing the waste chips to flow along the cleaning brush 35, thereby further improving the discharge efficiency of the waste chips.

[0074] In order to prevent the liquid from forming a rotating shape in the closed disk body 11 and not fully entering the discharge groove 5 (the entry amount is limited) or having a small impact force after entering the discharge groove 5, preferably, a guiding strip 51 is provided between every two adjacent discharge grooves 5. All the guiding strips 51 are arranged on the inner side wall of the closed disk body 11, and the guiding strip 51 is used to guide the liquid into the discharge groove 5.

[0075] The thickness of the guiding strip 51 is set to increase from the end close to the spiral liquid extraction column 12 to the end far from the spiral liquid extraction column 12, and the surface of the guiding strip 51 is provided with an inclined surface.

[0076] When the closed disk body 11 rotates, the liquid in the closed disk body 11 will also rotate. Once the liquid contacts the guiding strip 51, the rotation trend of the liquid is restricted. At this time, the guiding strip 51 will intercept part of the liquid, and most of the liquid will flow away along the inclined surface. Then, the intercepted part of the liquid will enter the inclined groove 62 and flow along the inclined groove 62.

[0077] In order to complete the grinding operation of the workpiece, preferably, it further includes a workpiece fixing frame 8 for carrying the workpiece and guiding the workpiece to move opposite to the grinding body 31. An installation cover 81 is installed on the workpiece fixing frame 8. A limiting groove 82 for limiting the driving cylinder 2 is provided in the installation cover 81. A height adjuster connected to the side wall of the driving cylinder 2 and used to bring the grinding body 31 closer to or farther away from the workpiece is installed on the surface of the installation cover 81. A driver for rotating the driving cylinder 2 is provided on the surface of the installation cover 81.

[0078] The height adjuster can be a hydraulic push rod or an electric push rod or a lead screw, and reference can be made to Figure 6Installed in the manner shown, the drive can be composed of a gear provided with a motor and a gear column sleeved on the side wall of the drive cylinder 2.

[0079] The workpiece fixture 8 can carry the workpiece and guide the workpiece to move directly opposite the grinding body 31. Then, the drive cylinder 2 is lowered by an appropriate height through the height adjuster, and at the same time, the drive cylinder 2 is rotated through the drive, so that the fixing block 32 drives the grinding body 31 to rotate, thereby performing the grinding action.

[0080] The working principle of the present invention: When the grinding device is in use, first guide the workpiece to move directly opposite the grinding body 31 (refer to Figure 6 ). When the workpiece moves below the grinding body 31 and is directly opposite the grinding body 31, the drive cylinder 2 can be lowered by an appropriate height through the height adjuster, and at the same time, the drive cylinder 2 is rotated through the drive, so that the fixing block 32 drives the grinding body 31 to rotate, thereby performing the grinding action (here, an example of a machined surface is used for illustration. If other machined surfaces need to be processed, only the position of the workpiece needs to be adjusted).

[0081] When the fixing block 32 drives the grinding body 31 to rotate, directly guide the external liquid into the fixed column tube 7. At this time, the sealing disk body 11 and the spiral liquid extraction column 12 will rotate together. Since the end of the spiral liquid extraction column 12 directly extends into the fixed column tube 7, a spiral suction force will be formed when the spiral liquid extraction column 12 rotates, sucking the liquid in the fixed column tube 7 into the sealing disk body 11. And because the sealing disk body 11 is rotating, the liquid in the sealing disk body 11 will also rotate. Once the liquid contacts the guiding strip 51, the rotation trend of the liquid is restricted. At this time, the guiding strip 51 will intercept part of the liquid, and most of the liquid will flow away along the inclined surface. Then, the intercepted part of the liquid will enter the inclined groove 62 and flow along the inclined groove 62. Such an operation can ensure that during the suction process, the liquid will be guided to spread in a spiral shape in the sealing disk body 11, rather than directly impacting the inner wall of the sealing disk body 11 and spreading, thereby reducing the probability of the sealing disk body 11 shaking.

[0082] That is to say, the sealing disk body 11 will quickly guide the liquid into the inclined groove 62, and then directly flush into the export groove 5 from the insert body 61 and impact the inner side wall of the export groove 5. Since the grinding body 31 is always rotating and grinding out waste chips (if there is no export groove 5, the grinding body 31 will always press the grinding waste, and the setting of the export groove 5 can make the grinding body 31 temporarily release the pressing on the waste), when the waste enters the export groove 5, the liquid in the liquid guide disk cover 1 will be thrown out, thereby flushing out the waste in the export groove 5.

[0083] When the drive cylinder 2 rotates simultaneously with the fixing block 32 and the fixing ring 33, the grinding body 31 will perform a grinding operation, and the fixing ring 33 will drive all the mounting brackets 34 and the cleaning brushes 35 to move, and perform a cleaning action on the outer side of the grinding body 31. Since each mounting bracket 34 is respectively arranged in one-to-one correspondence with each discharge groove 5, when the waste chips are flushed out, they will immediately be swept away by the cleaning brush 35, preventing the flushed waste chips from accumulating at the edge of the grinding body 31.

[0084] Moreover, when the fixing block 32 is driven to rotate, it will apply a centrifugal force to the mounting bracket 34 and the cleaning brush 35 in the sliding groove 36, throwing the cleaning brush 35 away from the grinding body 31. At this time, the cleaning brush 35 in the sliding groove 36 will slide along the sliding groove 36 and pull the traction block 38 gradually away from the fixing block 32. During the process of the cleaning brush 35 moving away, the cleaning brush 35 will gradually approach the workpiece surface, that is, increasing the contact force between the cleaning brush 35 and the workpiece surface, enabling the cleaning brush 35 to clean the surface of the workpiece with a reduced surface or the attached waste chips.

[0085] When the fixing block 32 stops rotating, the return member 39 (which can be a spring) will push the traction block 38 to reset, so that the cleaning brush 35 returns to its original position.

[0086] When the fixing block 32 is driven to rotate and the cleaning brush 35 is pulled to perform a cleaning action, liquid will enter the liquid guide ring 310 and then be sprayed out from the liquid spraying head 312 to wash the cleaning brush 35, preventing waste chips from adhering to the cleaning brush 35.

[0087] The height of the cleaning brush 35 after resetting and pressing on the workpiece surface is variable (because, for example, Figures 1-6 , the mounting bracket 34 is inclined). And this will be reflected in the situation where the grinding body 31 does not rotate and rotates. Once the grinding body 31 does not rotate, the cleaning brush 35 will reset. At this time, the position of the liquid sprayed out by the liquid spraying head 312 is higher than the position when the cleaning brush 35 presses on the workpiece surface, because the position when the cleaning brush 35 presses on the workpiece surface will drop, and after resetting, the cleaning brush 35 no longer presses on the workpiece surface. In this way, it means that the liquid spraying head 312 can perform a cleaning action on the cleaning brush 35 that moves up and down while the spraying position of the liquid remains unchanged.

[0088] Compared with the prior art, the present invention can achieve the purpose of synchronous flushing during the process of the grinding disc 3 grinding the workpiece surface through the cooperation of the liquid guide disc cover 1 and the discharge groove 5. During specific implementation, the external liquid is directly guided into the fixed column tube 7, and at the same time, the drive cylinder 2 is guided by the driver to drive the grinding disc 3 to grind the workpiece. During the process of the grinding disc 3 grinding the workpiece, waste materials will be ground out and guided into the discharge groove 5. And the liquid guide disc cover 1 can rotate together with the grinding disc 3. Therefore, when the waste materials enter the discharge groove 5, the liquid in the liquid guide disc cover 1 will be thrown out, thereby flushing out the waste materials in the discharge groove 5.

[0089] The present invention also provides a grinding method of a soft ferrite core grinding device, comprising the following steps:

[0090] S100, starting the driving cylinder 2, and guiding the rotating driving cylinder 2 to descend until the grinding body 31 contacts the surface of the workpiece;

[0091] S200, lowering the grinding body 31 to a set height so that the current processed position of the workpiece surface is ground to the set height, and at the same time injecting liquid into the fixed column tube 7 to guide the liquid to impact the inner wall of the contact area between the outlet groove 5 and the workpiece and flush the grinding waste entering the outlet groove 5 area out of the outlet groove 5;

[0092] S300, cleaning the grinding waste flushed out of the guide groove 5 by the cleaning brush 35 that moves synchronously with the grinding body 31, and injecting liquid into the liquid guide ring 310 to flush all the cleaning brushes 35;

[0093] S100, adjust the position of the workpiece, and repeat S100-S300 until the surface of the workpiece is ground.

[0094] In step S300, the cleaning brush 35 that moves synchronously with the grinding body 31 cleans the grinding waste washed out of the guide groove 5, and injects liquid into the liquid guide ring 310 to rinse all the cleaning brushes 35. The specific steps are as follows:

[0095] S301, guiding the cleaning brush 35 that rotates synchronously with the grinding body 31 to move toward the side away from the outlet groove 5 through the mounting frame 34, and pushing the cleaning brush 35 to cling to the workpiece surface, so as to push the grinding waste that rushes out of the outlet groove 5 away from the grinding body 31;

[0096] S302, guiding the liquid in the liquid guide ring 310 to flush the cleaning brush 35;

[0097] S303, when the current processing position of the workpiece surface is ground to a set height, the grinding body 31 stops moving, and the traction block 38 moves with the cleaning brush 35 toward the side of the outlet groove 5 and leaves the workpiece surface to change the position of the liquid in the liquid guide ring 310 to flush the cleaning brush 35.

[0098] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A grinding device for soft magnetic ferrite cores, characterized in that, it includes a liquid guide disc cover (1), a driving cylinder (2), and a grinding disc (3) detachably installed at the end of the driving cylinder (2). The grinding disc (3) can be driven by the driving cylinder (2) to rotate to polish the surface of the workpiece. An installation groove (4) is provided on the surface of the grinding disc (3), and a plurality of discharge grooves (5) extending to be flush with the outer wall of the grinding disc (3) are provided on the inner side wall of the installation groove (4); The liquid guide disc cover (1) is arranged in the installation groove (4). A plurality of liquid outlet nozzles (6) are provided at the edge of the liquid guide disc cover (1). Each liquid outlet nozzle (6) is respectively arranged in one-to-one correspondence with each discharge groove (5). A fixed column tube (7) for injecting liquid into the liquid guide disc cover (1) is sleeved in the driving cylinder (2); When the driving cylinder (2) drives the grinding disc (3) to polish the surface of the workpiece, the liquid guide disc cover (1) injects liquid into all the discharge grooves (5) simultaneously; The liquid guide disc cover (1) includes a closed disc body (11) detachably and fixedly installed in the installation groove (4). All the liquid outlet nozzles (6) are arranged along the outer wall of the closed disc body (11). A spiral liquid extraction column (12) is arranged in the closed disc body (11). One end of the spiral liquid extraction column (12) is detachably and fixedly connected to the inner wall of the closed disc body (11) far from the driving cylinder (2), and the other end of the spiral liquid extraction column (12) extends into the fixed column tube (7); The spiral liquid extraction column (12) can extract the liquid in the fixed column tube (7) during the rotation of the closed disc body (11) following the grinding disc (3).

2. The grinding device for soft magnetic ferrite cores according to claim 1, characterized in that, the liquid outlet nozzle (6) includes an insertion body (61) installed on the outer wall of the closed disc body (11). An inclined groove (62) communicating with the inside of the closed disc body (11) is provided in the insertion body (61). One end of the insertion body (61) far from the closed disc body (11) extends into the corresponding discharge groove (5); The inclined groove (62) can guide the liquid to impact the inner side wall of the discharge groove (5).

3. The grinding device for soft magnetic ferrite cores according to claim 1, characterized in that, the grinding disc (3) includes a grinding body (31) and a fixing block (32) arranged on the surface of the grinding body (31). The surface of the fixing block (32) far from the grinding body (31) is fixedly connected to the end of the driving cylinder (2). The installation groove (4) is arranged in the central area of the grinding body (31); A fixing ring (33) is detachably and fixedly installed on the outer side of the fixing block (32). A plurality of mounting brackets (34) are installed on the fixing ring (33). A cleaning brush (35) is movably connected to the surface of each mounting bracket (34). Each mounting bracket (34) is respectively arranged in one-to-one correspondence with each discharge groove (5).

4. The grinding device for soft magnetic ferrite cores according to claim 3, characterized in that, One end of the mounting bracket (34) away from the fixed block (32) is inclined away from the driving cylinder (2). A sliding groove (36) for restricting the cleaning brush (35) is formed on the surface of the mounting bracket (34), and the cleaning brush (35) can slide along the sliding groove (36). A support frame (37) is arranged on one side of the mounting bracket (34) away from the cleaning brush (35). A traction block (38) is penetrated through the support frame (37). One end of the traction block (38) close to the mounting bracket (34) is fixedly connected to the cleaning brush (35), and a return member (39) with an end surface connected to the traction block (38) is sleeved on the side wall of the support frame (37).

5. A soft ferrite magnetic core grinding device according to claim 4, characterized in that, A liquid guide ring (310) is sleeved outside the fixed block (32). A liquid ring clamping block (311) sleeved outside the driving cylinder (2) is installed on the liquid guide ring (310), and a plurality of threaded liquid guide heads (313) are arranged on the side wall of the liquid guide ring (310); Each of the threaded liquid guide heads (313) is correspondingly connected to a liquid spraying head (312) for flushing the cleaning brush (35), and the liquid spraying head (312) can rotate with the threaded liquid guide head as the rotation center.

6. A soft ferrite magnetic core grinding device according to claim 5, characterized in that, A guiding strip (51) is arranged between every two adjacent liquid outlet grooves (5). All the guiding strips (51) are arranged on the inner side wall of the closed disk body (11), and the guiding strip (51) is used for guiding liquid into the liquid outlet groove (5); The thickness of the guiding strip (51) increases from the end close to the spiral liquid pumping column (12) to the end away from the spiral liquid pumping column (12), and an inclined surface is arranged on the surface of the guiding strip (51).

7. A soft ferrite magnetic core grinding device according to claim 6, characterized in that, It further includes a workpiece fixing frame (8) for carrying the workpiece and guiding the workpiece to move to face the grinding body (31). An installation cover (81) is installed on the workpiece fixing frame (8). A limiting groove (82) for limiting the driving cylinder (2) is arranged in the installation cover (81). A height adjuster connected to the side wall of the driving cylinder (2) and used for driving the grinding body (31) to approach or move away from the workpiece is installed on the surface of the installation cover (81), and a driver for driving the driving cylinder (2) to rotate is arranged on the surface of the installation cover (81).

8. A grinding method for a soft ferrite magnetic core grinding device based on claim 7, characterized in that, It includes the following steps: S100. Start the driving cylinder (2), and guide the rotating driving cylinder (2) to descend until the grinding body (31) contacts the surface of the workpiece; S200. Lower the position of the grinding body (31) by a set height so that the current machined position on the surface of the workpiece is ground by a set height. At the same time, inject liquid into the fixed column tube (7) to guide the liquid to impact the inner wall of the contact area between the liquid outlet groove (5) and the workpiece and flush out the grinding waste entering the area of the liquid outlet groove (5). S300. The grinding waste chips flushed out of the discharge groove (5) are cleaned by the cleaning brushes (35) that move synchronously with the grinding body (31), and liquid is injected into the liquid guide ring (310) to flush all the cleaning brushes (35). S100. Adjust the position of the workpiece, and repeat S100 - S300 until the surface of the workpiece is ground.

9. The grinding method of a soft magnetic ferrite core grinding device according to claim 8, characterized in that in step S300, the grinding waste chips flushed out of the discharge groove (5) are cleaned by the cleaning brushes (35) that move synchronously with the grinding body (31), and liquid is injected into the liquid guide ring (310) to flush all the cleaning brushes (35). The specific steps are as follows: S301. The cleaning brushes (35) that rotate synchronously with the grinding body (31) are guided by the mounting frame (34) to move away from the discharge groove (5), and the cleaning brushes (35) are pushed against the surface of the workpiece to push the grinding waste flushed out of the discharge groove (5) away from the grinding body (31). S302. Guide the liquid in the liquid guide ring (310) to flush the cleaning brushes (35). S303. When the currently machined position on the surface of the workpiece reaches the set grinding height, the grinding body (31) stops moving, and the traction block (38) drives the cleaning brushes (35) to move towards the discharge groove (5) and away from the surface of the workpiece to change the position where the liquid in the liquid guide ring (310) flushes the cleaning brushes (35).

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