Magnetic core air gap grinding machine and grinding method thereof

Abstract

The invention relates to a magnetic core air gap grinding machine which comprises a working platform, and a grinding mechanism is installed on the working platform. A graduator is mounted below the working platform, the graduator is vertically connected with a rotating shaft, and a lower positioning seat is fixedly mounted at the top of the rotating shaft; a pressing support is installed above the working platform, a pressing mechanism is installed at the top of the pressing support, a vertical pressing rod is rotatably installed at the lower end of the pressing mechanism, and an upper positioning seat is installed at the lower end of the pressing rod; the upper positioning seat and the lower positioning seat define a positioning space for containing a magnetic core, and avoiding positions for the grinding mechanism to grind air gaps are formed in the upper positioning seat and the lower positioning seat respectively. The magnetic core is fixed through the upper positioning base capable of rotating along with the lower positioning base, the graduator is used for driving the lower positioning base to rotate by the set angle, a plurality of air gaps can be formed in the magnetic core, the machining efficiency of the magnetic core is improved, and the machining precision of the magnetic core is improved.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic core production, and in particular to a magnetic core air gap grinder and a grinding method thereof. Background Art

[0002] In order to prevent the magnetic core from being saturated during operation, an air gap is usually required on the magnetic core to increase the stability of the core temperature and magnetic field. At the same time, in order to reduce magnetic leakage, some magnetic core products need to have multiple air gaps.

[0003] The existing magnetic core air gap is mainly manually operated, and the air gap accuracy is difficult to ensure consistency; and the existing air grinding equipment can only open one air gap for the magnetic core. When multiple air gaps need to be opened, the magnetic core needs to be re-clamped and repositioned, which seriously affects the production efficiency of the magnetic core.

[0004] Based on the above technical problems, the present application proposes a magnetic core air gap grinding machine and a grinding method thereof. Summary of the invention

[0005] The object of the present invention is to provide a magnetic core air gap grinding machine and a grinding method thereof to solve the technical problems mentioned in the background technology. The object of the present invention is achieved through the following technical solutions: A magnetic core air gap grinding machine comprises a working platform, on which a grinding mechanism is installed; a divider is installed below the working platform, the rotating part of the divider is vertically connected to a rotating shaft, and a lower positioning seat is fixedly installed on the top of the rotating shaft; a clamping bracket is installed above the working platform, a clamping mechanism is installed on the top of the clamping bracket, a vertical pressure rod is rotatably installed on the lower end of the clamping mechanism, and an upper positioning seat is installed on the lower end of the pressure rod; when the clamping mechanism is pressed downward, the upper positioning seat and the lower positioning seat form a positioning space for accommodating the magnetic core, and the upper positioning seat and the lower positioning seat are respectively provided with avoidance positions that match the air gap of the magnetic core, and the grinding mechanism performs air gap grinding at the avoidance positions; a guide rod is vertically installed on the clamping bracket, and there are at least two guide rods, a clamping platform is slidably installed on the guide rod, a clamping mechanism is installed on the clamping platform, and the clamping mechanism is sleeved on the outer side of the pressure rod.

[0006] Furthermore, the grinding mechanism includes a moving mechanism, a grinding motor and a grinding wheel. The grinding motor is installed on the moving mechanism, and the moving mechanism can drive the grinding motor to move along the X direction and the Y direction. The grinding wheel is connected to the driving shaft of the grinding motor, and the center position of the grinding wheel matches the center position of the magnetic core.

[0007] Furthermore, a supporting platform is installed on the working platform through a supporting rod, a rotating shaft is arranged through the supporting platform, and the rotating shaft is connected to the supporting platform through a bearing.

[0008] Furthermore, the clamping bracket includes a vertical plate, an upper platform is horizontally installed on the top of the vertical plate, a lower platform is horizontally installed on the lower side of the upper platform, the clamping mechanism is installed on the upper platform, and the guide rod is installed between the upper platform and the lower platform; the pressure rod passes through the lower platform, and the pressure rod is connected to the lower platform through a linear bearing.

[0009] Furthermore, an installation cavity is provided on the lower end surface of the upper positioning seat, and an insertion hole is provided on the top surface of the installation cavity and passes through the upper positioning seat, and the cross-section of the insertion hole is a regular hexagon; a stopper is fixed to the lower end of the pressure rod, and the outer diameter of the stopper is larger than the outer diameter of the pressure rod; a regular hexagonal prism matching the insertion hole is fixed to the lower end of the stopper, and a compression spring is sleeved on the regular hexagonal prism, and the regular hexagonal prism passes through the insertion hole so that the compression spring is located between the stopper and the upper positioning seat, and an anti-slip block is installed at the lower end of the regular hexagonal prism.

[0010] Furthermore, the lower positioning seat includes a bottom plate and an outer rib, the outer rib is fixed to the outer edge of the upper end surface of the bottom plate, and the inner diameter of the outer rib matches the outer diameter of the magnetic core.

[0011] Furthermore, the upper positioning seat includes a top plate and an inner stopper, the inner stopper is fixed at the center of the lower end surface of the top plate, and the outer diameter of the inner stopper matches the inner diameter of the magnetic core.

[0012] Furthermore, the lower half of the outer wall of the inner stopper is inclined inwards.

[0013] Furthermore, the magnetic core is one of circular, rectangular or square.

[0014] A grinding method using the magnetic core air gap grinding machine comprises the following steps: Step S1, adjusting the angle of the upper positioning seat so that the avoidance position on the upper positioning seat coincides with the avoidance position on the lower positioning seat, moving the clamping mechanism to the upper part of the pressure rod and locking it to prevent the pressure rod from rotating; Step S2, placing the magnetic core on the lower positioning seat, driving the upper positioning seat downward through the clamping mechanism, and fixing the magnetic core between the upper positioning seat and the lower positioning seat; Step S3, loosen the clamping mechanism to allow the upper positioning seat to rotate synchronously with the lower positioning seat; Step S4, moving the first avoidance position to the grinding mechanism through the indexer, and opening a first air gap at the first avoidance position through the grinding mechanism; Step S5, moving the next avoidance position to the grinding mechanism through the indexer, and opening a second air gap at the next avoidance position through the grinding mechanism; Step S6, repeat the actions of step S4 and step S5 until all air gaps are ground; lock the locking mechanism, drive the upper positioning seat upward through the clamping mechanism, and take out the ground magnetic core.

[0015] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages: 1. The magnetic core is fixed by the upper positioning seat which can rotate with the lower positioning seat. The lower positioning seat is driven by the indexer to rotate to a set angle, so that multiple air gaps can be opened on the magnetic core, thereby improving the processing efficiency and accuracy of the magnetic core; 2. The grinding motor is driven by the moving mechanism to move along the Y direction, so that the grinding of magnetic core air gaps of different thicknesses can be realized; the grinding motor is driven by the moving mechanism to move along the X direction, so that the grinding of magnetic core air gaps of different widths or multiple X directions can be realized, which improves the practicality of the grinding device; 3. The rotating shaft is supported by the supporting platform, and the pressure rod is supported by the lower platform, which improves the structural stability of the upper and lower positioning seats and ensures the processing accuracy of the magnetic core; 4. By locking the pressure rod in the non-working state through the clamping mechanism, it is possible to prevent the pressure rod from rotating relative to the rotating shaft, causing the avoidance position of the upper positioning seat to be misaligned with the avoidance position of the lower positioning seat, thereby ensuring the stability of the device during operation; 5. By floatingly installing the upper positioning seat on the lower end of the pressure rod through a regular hexagonal prism and buffering it through a compression spring, damage to the magnetic core when the upper positioning seat is pressed down can be avoided, thereby ensuring the quality of the magnetic core. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the grinding machine according to the embodiment of the present application; Figure 2 This is a schematic diagram of the installation structure of the positioning seat in the embodiment of the present application; Figure 3 This is a schematic diagram of the structure of the upper positioning seat in the embodiment of the present application; Figure 4 This is a cross-sectional view of the upper positioning seat of the embodiment of the present application; Figure 5 This is a schematic diagram of the positioning seat structure in an embodiment of the present application; Figure 6 This is a schematic diagram of magnetic core positioning according to an embodiment of the present application; Figure 7 This is a schematic diagram of the grinding mechanism structure of an embodiment of the present application.

[0018] Figure numerals: 1. working platform; 11. supporting platform; 2. grinding mechanism; 21. moving mechanism; 22. grinding motor; 23. grinding wheel; 3. indexer; 31. rotating shaft; 4. lower positioning seat; 41. bottom plate; 42. outer retaining edge; 43. lower avoidance position; 5. magnetic core; 6. clamping bracket; 61. vertical plate; 62. upper platform; 63. lower platform; 64. reinforcing plate; 65. guide rod; 7. clamping mechanism; 71. pressure rod; 72. block; 73. regular hexagonal prism; 74. compression spring; 75. anti-slip block; 8. clamping platform; 81. clamping mechanism; 9. upper positioning seat; 91. top plate; 92. inner block; 93. upper avoidance position; 94. installation cavity. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0020] Example 1 like Figure 1 , Figure 7 A magnetic core air gap grinding machine shown in the figure comprises a working platform 1, and a grinding mechanism 2 is installed at the rear portion above the working platform 1. The grinding mechanism 2 comprises a moving mechanism 21, a grinding motor 22 and a grinding wheel 23. The grinding motor 22 is installed on the moving mechanism 21. The moving mechanism 21 is composed of two lead screw linear modules, which are used to drive the grinding motor 22 to move along the X direction and the Y direction. The grinding wheel 23 is connected to the driving shaft of the grinding motor 22 through a synchronous wheel assembly, and the axis of the grinding wheel 23 is parallel to the X direction, and the center position of the grinding wheel 23 is at the same height as the center position of the magnetic core 5.

[0021] When the moving mechanism 21 drives the grinding click 22 to move along the X direction, the grinding wheel 23 can be driven to move along the X direction, so as to process air gaps of different widths or to open multiple air gaps. When the moving mechanism 21 drives the grinding click 22 to move along the Y direction, the grinding wheel 23 can be driven to move along the Y direction, so as to change the feeding depth of the grinding wheel 23, so as to process air gaps of different depths.

[0022] like Figure 1 , Figure 5As shown, a divider 3 is installed at the front part below the working platform 1, and the rotating part of the divider 3 is vertically connected to the rotating shaft 31. The rotating shaft 31 passes through the working platform 1 and extends to the top of the working platform 1. A lower positioning seat 4 is fixedly installed on the top of the rotating shaft 31. The lower positioning seat 4 includes a bottom plate 41 and an outer rib 42. The bottom plate 41 is circular, rectangular or square. The geometric center of the lower end face of the bottom plate 41 is fixedly connected to the rotating shaft 31, and the outer rib 42 is fixed to the outer edge of the upper end face of the bottom plate 41. The thickness of the outer rib 42 is less than or equal to the thickness of the magnetic core 5, and the inner diameter of the outer rib 42 matches the outer diameter of the magnetic core 5. Two lower avoidance positions 43 are provided on the base 41 and the outer rib 42, and the size of the lower avoidance position 43 is larger than the air gap size of the magnetic core 5.

[0023] The lower positioning seat 4 is connected to the indexer 3 by the rotating shaft 31, which can avoid interference during grinding. The support platform 11 is fixedly mounted on the working platform 1 through four support rods, the rotating shaft 31 passes through the center of the support platform 11, and the rotating shaft 31 is connected to the support platform 11 through a bearing, so as to support the rotating shaft 31 to ensure the stability of the rotation of the rotating shaft 31.

[0024] like Figure 1 , Figure 2 As shown, a clamping bracket 6 is installed above the working platform 1. The clamping bracket 6 includes a vertical plate 61, which is vertically installed on one side of the lower positioning seat 4, and an upper platform 62 and a lower platform 63 are installed on the right side of the top of the vertical plate 61 from top to bottom, respectively. Reinforcement plates 64 are installed between the vertical plate 61 and the working platform 1, and between the upper platform 62, the lower platform 63 and the vertical plate 61, respectively, to improve the structural strength of the clamping bracket 6.

[0025] The upper platform 62 and the lower platform 63 are provided with through holes coaxial with the rotating shaft 31. The through hole of the upper platform 62 is provided with a clamping mechanism 7, which is a cylinder. The telescopic shaft of the cylinder passes through the through hole of the upper platform 62 and is rotatably connected with a pressure rod 71. Specifically, a connecting sleeve is installed between the telescopic shaft of the cylinder and the pressure rod 71. The telescopic shaft of the cylinder is connected to the upper end of the connecting sleeve through a bearing. The upper end of the pressure rod 71 is fixedly connected to the connecting sleeve, so that the pressure rod 71 can rotate relative to the telescopic shaft of the cylinder. The lower end of the pressure rod 71 passes through the through hole of the lower platform 63 and extends downward from the lower platform 63. The pressure rod 71 is slidably connected to the lower platform 63 through a linear bearing to ensure the stability of the pressure rod 71 when it is raised or lowered.

[0026] like Figure 1 , Figure 2As shown, two guide rods 65 are installed between the upper platform 62 and the lower platform 63, and a clamping platform 8 is slidably installed on the two guide rods 65 through a linear bearing, and a clamping mechanism 81 is installed on the clamping platform 8, and the clamping mechanism 81 is sleeved on the outside of the pressure rod 71. When the clamping mechanism 81 clamps the pressure rod 71, the pressure rod 71 cannot rotate but can be lifted and lowered to prevent the pressure rod 71 from rotating in a non-working state. The clamping mechanism 81 is a pneumatic, hydraulic or electromagnetic structure, such as a brake of a motor. The structure and principle of the clamping mechanism 81 are both existing technologies and will not be described in detail here.

[0027] like Figure 1-Figure 4 , Figure 6 As shown, the upper positioning seat 9 includes a top plate 91 and an inner stopper 92, and the top plate 91 is a circular, rectangular or square shape. The inner stopper 92 is fixed at the center of the lower end surface of the top plate 91, and the thickness of the inner stopper 92 is less than the thickness of the magnetic core 5, and the outer diameter of the inner stopper 92 matches the inner diameter of the magnetic core 5. Two upper avoidance positions 93 are provided on the top plate 91 and the inner stopper 92, and the size of the upper avoidance position 93 is larger than the air gap size of the magnetic core 5, and the position of the upper avoidance position 93 coincides with the position of the lower avoidance position 43, and the upper avoidance position 93 and the lower avoidance position 43 together constitute the avoidance position. When the clamping mechanism 7 is pressed down, the upper positioning seat 9 and the lower positioning seat 4 enclose a positioning space for accommodating the magnetic core 5, and the grinding mechanism 2 performs air gap grinding at the avoidance position. Preferably, the lower half of the outer wall of the inner stopper 92 is tilted inward to facilitate the insertion of the inner stopper 92 into the inner circle of the magnetic core 5.

[0028] like Figure 2 , Figure 4 As shown, the lower end surface of the inner stopper 92 is provided with a mounting cavity 94, and the top surface of the mounting cavity 94 is provided with an insertion hole that penetrates the upper positioning seat 9, and the cross section of the insertion hole is a regular hexagon. The lower end of the pressure rod 71 is fixed with a stopper 72, and the outer diameter of the stopper 72 is larger than the outer diameter of the pressure rod 71. The lower end of the stopper 72 is fixed with a regular hexagonal prism 73 that cooperates with the insertion hole, and a compression spring 74 is sleeved on the regular hexagonal prism 73. The lower end of the regular hexagonal prism 73 is provided with an anti-slip block 75 through the insertion hole, so that the compression spring 74 is located between the stopper 73 and the upper positioning seat 9. Among them, the anti-slip block 75 is a nut, and the lower end of the regular hexagonal prism 73 is provided with an external thread, and the anti-slip block 75 is screwed to the lower end of the regular hexagonal prism 73. Through the arrangement of the above structure, the upper positioning seat 9 can play a buffering role when pressed down to avoid damage to the magnetic core 5; at the same time, the upper positioning seat 9 can be prevented from rotating to ensure the overlap of the upper avoidance position 93 and the lower avoidance position 43.

[0029] Example 2 Embodiment 1 The grinding method of the magnetic core air gap grinding machine comprises the following steps: Step S1, adjust the angle of the upper positioning seat 9 so that the upper avoidance position 93 on the upper positioning seat 9 overlaps with the lower avoidance position 43 on the lower positioning seat 4, move the clamping mechanism 81 to the upper part of the pressure rod 71 and lock it to prevent the pressure rod 71 from rotating, and ensure that the upper avoidance position 93 overlaps with the lower positioning seat 4.

[0030] Step S2, place the magnetic core 5 in the outer retaining edge 42 of the lower positioning seat 4, drive the upper positioning seat 9 downward through the clamping mechanism 7, so that the inner stop block 92 of the upper positioning seat 9 is inserted into the inner hole of the magnetic core 5 to achieve the positioning of the magnetic core 5; at the same time, the top plate 91 of the upper positioning seat 9 presses the magnetic core 5 against the bottom plate 41 of the lower positioning seat 4 to achieve the fixation of the magnetic core 5.

[0031] Step S3, loosen the clamping mechanism 81, so that the upper positioning seat 9 can rotate synchronously with the lower positioning seat 4; Step S4, moving the first avoidance position to the grinding mechanism 2 through the indexer 3, and opening a first air gap at the first avoidance position through the grinding mechanism 2; Step S5, moving the next avoidance position to the grinding mechanism 2 through the indexer 3, and opening a second air gap at the next avoidance position through the grinding mechanism 2.

[0032] When the magnetic core 5 is circular, the rotation angle of the indexer 3 can be 90°, 120° or 180°; when the magnetic core 5 is rectangular or square, the rotation angle of the indexer 3 can be 90° or 180°. When the magnetic core 5 is rectangular, the moving mechanism 21 can drive the grinding wheel 23 to move along the X direction, and a plurality of air gaps are opened along the long side of the magnetic core 5.

[0033] Step S6, repeat the actions of step S4 and step S5 until all air gaps are ground; lock the clamping mechanism 81 to prevent the pressure rod 71 from rotating. Drive the upper positioning seat 9 upward through the clamping mechanism 7 to take out the ground magnetic core 5. When the pressure rod 71 moves upward, the clamping platform 8 moves upward with the pressure rod 71.

[0034] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages: 1. The magnetic core is fixed by the upper positioning seat which can rotate with the lower positioning seat. The lower positioning seat is driven by the indexer to rotate to a set angle, so that multiple air gaps can be opened on the magnetic core, thereby improving the processing efficiency and accuracy of the magnetic core; 2. The grinding motor is driven by the moving mechanism to move along the Y direction, so that the grinding of magnetic core air gaps of different thicknesses can be realized; the grinding motor is driven by the moving mechanism to move along the X direction, so that the grinding of magnetic core air gaps of different widths or multiple X directions can be realized, which improves the practicality of the grinding device; 3. The rotating shaft is supported by the supporting platform, and the pressure rod is supported by the lower platform, which improves the structural stability of the upper and lower positioning seats and ensures the processing accuracy of the magnetic core; 4. By locking the pressure rod in the non-working state through the clamping mechanism, it is possible to prevent the pressure rod from rotating relative to the rotating shaft, causing the avoidance position of the upper positioning seat to be misaligned with the avoidance position of the lower positioning seat, thereby ensuring the stability of the device during operation; 5. By floatingly installing the upper positioning seat on the lower end of the pressure rod through a regular hexagonal prism and buffering it through a compression spring, damage to the magnetic core when the upper positioning seat is pressed down can be avoided, thereby ensuring the quality of the magnetic core.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A magnetic core air gap grinding machine, characterized in that: It includes a working platform, wherein a grinding mechanism is installed on the working platform; a divider is installed below the working platform, the rotating part of the divider is vertically connected to a rotating shaft, and a lower positioning seat is fixedly installed on the top of the rotating shaft; a clamping bracket is installed above the working platform, a clamping mechanism is installed on the top of the clamping bracket, a vertical pressure rod is rotatably installed on the lower end of the clamping mechanism, and an upper positioning seat is installed on the lower end of the pressure rod; when the clamping mechanism is pressed down, the upper positioning seat and the lower positioning seat form a positioning space for accommodating a magnetic core, and avoidance positions matching the air gap of the magnetic core are respectively opened on the upper positioning seat and the lower positioning seat, and the grinding mechanism performs air gap grinding at the avoidance position; a guide rod is vertically installed on the clamping bracket, and there are at least two guide rods, a clamping platform is slidably installed on the guide rod, a clamping mechanism is installed on the clamping platform, and the clamping mechanism is sleeved on the outer side of the pressure rod.

2. A magnetic core air gap grinding machine according to claim 1, characterized in that: The grinding mechanism includes a moving mechanism, a grinding motor and a grinding wheel. The grinding motor is installed on the moving mechanism, and the moving mechanism can drive the grinding motor to move along the X direction and the Y direction. The grinding wheel is drivingly connected to the driving shaft of the grinding motor, and the center position of the grinding wheel matches the center position of the magnetic core.

3. A magnetic core air gap grinding machine according to claim 1, characterized in that: A supporting platform is installed on the working platform via a supporting rod, the rotating shaft passes through the supporting platform, and the rotating shaft is connected to the supporting platform via a bearing.

4. A magnetic core air gap grinding machine according to claim 1, characterized in that: The clamping bracket includes a vertical plate, an upper platform is horizontally installed on the top of the vertical plate, a lower platform is horizontally installed on the lower side of the upper platform, the clamping mechanism is installed on the upper platform, and the guide rod is installed between the upper platform and the lower platform; the pressure rod passes through the lower platform, and the pressure rod is connected to the lower platform through a linear bearing.

5. A magnetic core air gap grinding machine according to claim 1, characterized in that: The lower end surface of the upper positioning seat is provided with an installation cavity, and the top surface of the installation cavity is provided with an insertion hole that passes through the upper positioning seat, and the cross-section of the insertion hole is a regular hexagon; a stopper is fixed to the lower end of the pressure rod, and the outer diameter of the stopper is larger than the outer diameter of the pressure rod; a regular hexagonal prism that cooperates with the insertion hole is fixed to the lower end of the stopper, and a compression spring is sleeved on the regular hexagonal prism, and the regular hexagonal prism passes through the insertion hole so that the compression spring is located between the stopper and the upper positioning seat, and an anti-slip block is installed at the lower end of the regular hexagonal prism.

6. A magnetic core air gap grinding machine according to claim 1, characterized in that: The lower positioning seat comprises a bottom plate and an outer rib, wherein the outer rib is fixed to the outer edge of the upper end surface of the bottom plate, and the inner diameter of the outer rib matches the outer diameter of the magnetic core.

7. A magnetic core air gap grinding machine according to claim 1, characterized in that: The upper positioning seat comprises a top plate and an inner stopper, wherein the inner stopper is fixed at the center of the lower end surface of the top plate, and the outer diameter of the inner stopper matches the inner diameter of the magnetic core.

8. A magnetic core air gap grinding machine according to claim 7, characterized in that: The lower half of the outer wall of the inner stopper is arranged to be inclined inwards.

9. A magnetic core air gap grinding machine according to claim 1, characterized in that: The magnetic core is circular, rectangular or square.

10. The grinding method of the magnetic core air gap grinding machine according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step S1, adjusting the angle of the upper positioning seat so that the avoidance position on the upper positioning seat coincides with the avoidance position on the lower positioning seat, moving the clamping mechanism to the upper part of the pressure rod and locking it to prevent the pressure rod from rotating; Step S2, placing the magnetic core on the lower positioning seat, driving the upper positioning seat downward through the clamping mechanism, and fixing the magnetic core between the upper positioning seat and the lower positioning seat; Step S3, loosen the clamping mechanism to allow the upper positioning seat to rotate synchronously with the lower positioning seat; Step S4, moving the first avoidance position to the grinding mechanism through the indexer, and opening a first air gap at the first avoidance position through the grinding mechanism; Step S5, moving the next avoidance position to the grinding mechanism through the indexer, and opening a second air gap at the next avoidance position through the grinding mechanism; Step S6, repeat the actions of step S4 and step S5 until all air gaps are ground; lock the locking mechanism, drive the upper positioning seat upward through the clamping mechanism, and take out the ground magnetic core.

Images