A core grinding machine and grinding method for a composite insulation glue-impregnated paper bushing

Abstract

The present invention relates to a core grinding machine tool and a grinding method for composite insulating rubber-impregnated paper bushings, and relates to the technical field of bushing core processing. The machine tool comprises a sliding frame, on which a grinding wheel for grinding a core column is movably connected, a machine box is arranged on one side of the sliding frame, a clearance groove is provided on the sliding frame, a clamping assembly for clamping the core column is rotatably connected at the upper end of the machine box, when the clamping assembly clamps the core column, the core column passes through the clamping assembly, a slider is slidably connected at the upper end of the sliding frame, a driving assembly for driving the grinding wheel to rotate is provided at the upper end of the sliding frame, a slide groove is provided at the upper end of the sliding frame, and the slider is located inside the slide groove. Grinding the core column is relatively convenient, and there is no need to remove the core column from the clamping assembly, which is highly convenient.

Description

Technical Field

[0001] The invention relates to the technical field of bushing core processing, in particular to a core grinding machine tool and a grinding method for a composite insulating rubber-impregnated paper bushing. Background Art

[0002] Reference Figure 1 A composite insulating rubber-impregnated paper bushing core comprises a core column, one end of the core column in the length direction is tapered and arranged as a tapered portion, and the other end of the core column in the length direction is a trapezoidal cylinder and arranged as a trapezoidal portion; before leaving the factory, the cylindrical core column will be polished, and both ends of the core column in the length direction will be polished into shape.

[0003] Currently, when grinding the core column, the core column is first fixed on the clamping device, and then the grinding device is used to grind one end of the core column in the length direction. After the grinding on this side is completed, the core column needs to be removed from the clamping device, and then the other end of the core column to be ground is aligned with the grinding device, and the core column is ground again by adjusting the grinding device.

[0004] With regard to the above-mentioned related technologies, the length of the core column is about 0.67m to 0.75m, which is relatively long, and the staff consumes a lot of manpower to remove it; and after removing the core column, the staff also needs to locate the position where the core column needs to be clamped, and align the end of the core column to be polished with the polishing device. The steps of polishing the core column are numerous, complicated, and less convenient. Summary of the invention

[0005] In order to improve the convenience of grinding the core column, the present application provides a core grinding machine tool and a grinding method for a composite insulating rubber-impregnated paper bushing.

[0006] In the first aspect, the present application provides a core grinding machine tool for composite insulating rubber-impregnated paper bushing, which adopts the following technical solution:

[0007] A core grinding machine tool for a composite insulating rubber-impregnated paper sleeve comprises a sliding frame, a grinding wheel for grinding a core column is movably connected to the sliding frame, a chassis is arranged on one side of the sliding frame, a yield groove is opened on the sliding frame, the sliding frame comprises a grinding part 1 and a grinding part 2, the upper end of the chassis is rotatably connected to a clamping assembly for clamping the core column, when the clamping assembly clamps the core column, the core column passes through the clamping assembly, one end of the core column in the length direction is located on one side of the clamping assembly, and the other end of the core column in the length direction is located on the other side of the clamping assembly, the upper end of the sliding frame is slidably connected to a slider, and the upper end of the slider is provided with a driving assembly for driving the grinding wheel to rotate.

[0008] By adopting the above technical solution, the core column is installed on the clamping assembly, and then the slider is slid to a grinding part. Then, by operating the driving assembly to start, the grinding wheel is driven to rotate. Then, by moving the grinding wheel, one end of the core column in the length direction is ground. Then, by operating the slider to slide, the slider is slid along the chute to the position of the second grinding part, and then the other end of the core column in the length direction is ground by moving the grinding wheel. It is more convenient to grind the core column without removing the core column from the clamping assembly, and the convenience is higher.

[0009] Optionally, a chute is provided at the upper end of the sliding frame. The horizontal projection of the chute is arc-shaped. The slider is located inside the chute. A support platform is vertically slidably connected to the upper end of the slider. A connecting shaft is rotatably connected to the support platform, and the connecting shaft is detachably connected to the grinding wheel.

[0010] By adopting the above technical solution, when installing the grinding wheel, the grinding wheel can be connected to the connecting shaft to complete the connection of the grinding wheel. When the grinding wheel rotates, the support platform can support the connecting shaft and the grinding wheel, thereby improving the stability of the grinding wheel rotation.

[0011] Optionally, the driving assembly includes a first motor. The first motor is arranged at the upper end of the support platform. A first synchronous pulley is installed outside the output shaft of the first motor. A second synchronous pulley is installed outside the connecting shaft. A synchronous belt is sleeved outside the first synchronous pulley and the second synchronous pulley. The diameter of the first synchronous pulley is larger than that of the second synchronous pulley.

[0012] By adopting the above technical solution, by operating the output shaft of the first motor to rotate, the first synchronous pulley is driven to rotate, the second synchronous pulley is driven to rotate, and then the connecting shaft and the grinding wheel are driven to rotate for grinding the core column. The structure is simple and it is convenient to process the core column.

[0013] Optionally, a sliding table is provided at the upper end of the slider. A sliding plate is horizontally slidably connected to the upper end of the sliding table. A plurality of cylinders are arranged at the upper end of the support platform. The piston rods of the cylinders pass through the support platform and are fixedly connected to the sliding plate.

[0014] By adopting the above technical solution, by operating the piston rods of the plurality of cylinders to extend, the support platform can be driven to move away from the sliding plate, and then the grinding wheel is driven to move in the height direction. By operating the sliding plate to slide along the length direction of the sliding table, the support platform is driven to slide, and then the grinding wheel is driven to move in the horizontal direction. The structure is simple and the driving is convenient.

[0015] Optionally, a threaded rod is rotatably connected to the sliding table. A limiting rod is horizontally arranged on the sliding table. The threaded rod and the limiting rod are arranged in parallel. The sliding plate is threadedly connected to the threaded rod, and the sliding plate is sleeved outside the limiting rod.

[0016] By adopting the above technical solution, rotating the threaded rod can drive the sliding plate to reciprocate along the length direction of the sliding table, with a simple structure and convenient driving.

[0017] Optionally, the outer surface of the sliding frame is equidistantly provided with gear teeth. The slider is fixedly connected with a driving frame. The driving frame extends to the outside of the sliding frame. The lower end of the driving frame is rotatably connected with a gear, and the gear meshes with the gear teeth. The upper end of the driving frame is provided with a second motor. The output shaft of the second motor passes through the driving frame and is fixedly connected to the center of the gear.

[0018] By adopting the above technical solution, rotating the output shaft of the second motor can drive the gear to rotate. The gear moves along the arrangement of the gear teeth, and then drives the slider to move inside the chute. The structure is simple, the driving is convenient, and it is relatively convenient to move the slider.

[0019] Optionally, a horizontal platform is arranged at the upper end of the chassis. The horizontal platform is provided with a perforation. The clamping assembly includes two three-jaw chucks, which are respectively arranged at both ends of the horizontal platform in the length direction, and the two three-jaw chucks are arranged in opposite directions.

[0020] By adopting the above technical solution, by passing the core body column through the horizontal platform and the two three-jaw chucks, and then clamping the core body column with the two three-jaw chucks, the structure is simple and the clamping is convenient. When clamping the core body column with the two three-jaw chucks, the force on the core body column is relatively uniform, and the clamping of the core body column is relatively stable.

[0021] Optionally, a third motor is arranged inside the chassis. A third synchronous pulley is installed outside the output shaft of the third motor. One end of the horizontal platform in the length direction is rotatably connected with a fourth synchronous pulley. The outside of the third synchronous pulley and the fourth synchronous pulley is also sleeved with a synchronous belt. The fourth synchronous pulley is fixedly connected with one of the three-jaw chucks, and a relief hole for passing the core body column is opened at the center of the fourth synchronous pulley.

[0022] By adopting the above technical solution, after clamping the core body column with the two three-jaw chucks, rotating the output shaft of the third motor can drive the third synchronous pulley and the fourth synchronous pulley to rotate, and then drive the three-jaw chuck fixed to the fourth synchronous pulley to rotate, and then drive the core body column to rotate. The structure is simple and the driving is convenient.

[0023] Optionally, a grinding device for grinding the grinding wheel is arranged on the side of the sliding frame away from the chassis. The grinding device includes a grinding box, and a grinding wheel for grinding the grinding wheel is movably connected inside the grinding box.

[0024] By adopting the above technical solution, when the grinding wheel needs to be ground, the grinding wheel is moved to the grinding box, and the grinding wheel is ground with the grinding wheel, thereby improving the precision of the subsequent grinding of the core body column by the grinding wheel.

[0025] In a second aspect, the present application provides a grinding method, adopting the following technical solution:

[0026] A grinding method includes the following steps:

[0027] S1: Install the core column on the clamping assembly, move the slider to a position in the grinding part, operate the first motor 42 to rotate and drive the grinding wheel to rotate, and operate the clamping assembly to rotate;

[0028] S2: Drive the support platform to move in the vertical direction by operating the cylinder, and then drive the grinding wheel to move in the vertical direction. Use the grinding wheel to cooperate with the rotation of the clamping assembly to grind the core column;

[0029] S3: Drive the slide plate to slide by operating the rotation of the threaded rod, and then drive the grinding wheel to move in the horizontal direction, grind multiple positions of the core column, and complete the grinding of the trapezoidal part;

[0030] S4: Operate the slider to slide, slide the slider to a position in the second grinding part, and form an angle between the grinding wheel and the core column;

[0031] S5: Drive the support platform to move in the vertical direction by operating the cylinder, and then drive the grinding wheel to move in the vertical direction. Operate the rotation of the threaded rod to drive the slide plate to slide, and then drive the grinding wheel to move in the horizontal direction. The grinding wheel moves towards the core column, grind the other end of the core column in the length direction into a conical shape, and complete the grinding of the conical part.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. Install the core column on the clamping assembly, then slide the slider to a position in the first grinding part, then start the driving assembly by operating it to drive the grinding wheel to rotate, and then move the grinding wheel to grind one end of the core column in the length direction; then operate the slider to slide, slide the slider along the chute, slide the slider to the position of the second grinding part, and then move the grinding wheel to grind the other end of the core column in the length direction. It is more convenient to grind the core column without removing the core column from the clamping assembly, and the convenience is higher;

[0034] 2. By operating the piston rods of several cylinders to extend, the support platform can be driven to move away from the slide plate, and then drive the grinding wheel to move in the height direction. By operating the slide plate to slide along the length direction of the slide table, the support platform can be driven to slide, and then drive the grinding wheel to move in the horizontal direction. The structure is simple and the driving is convenient;

[0035] 3. By manipulating the output shaft of the second motor to rotate, thereby driving the gear to rotate. The gear moves along the arrangement of the teeth, thereby driving the slider to move inside the chute. The structure is simple, the driving is convenient, and it is relatively convenient to move the slider. Description of the Drawings

[0036] Figure 1 It is a schematic diagram of the core column after grinding.

[0037] Figure 2 It is a schematic diagram of the overall structure of a core grinding machine for composite insulation glue-impregnated paper sleeves.

[0038] Figure 3 It is a schematic diagram of the overall structure of a core grinding machine for composite insulation glue-impregnated paper sleeves from another angle.

[0039] Figure 4 It is a schematic sectional view of the chassis.

[0040] Figure 5 It is Figure 2 An enlarged schematic diagram of part A in

[0041] Description of the reference numerals: 100, core column; 200, trapezoidal part; 300, conical part; 1, sliding frame; 11, relief groove; 12, grinding part one; 13, grinding part two; 14, chute; 15, teeth; 2, grinding wheel; 3, chassis; 31, clamping assembly; 32, horizontal platform; 33, perforation; 34, three-jaw chuck; 35, third motor; 351, third synchronous pulley; 352, fourth synchronous pulley; 353, relief hole; 4, slider; 41, support platform; 411, connecting shaft; 412, second synchronous pulley; 42, first motor; 421, first synchronous pulley; 422, synchronous belt; 43, sliding table; 431, sliding plate; 432, threaded rod; 433, limiting rod; 434, fourth motor; 44, driving frame; 441, second motor; 442, gear; 5, grinding device; 51, grinding box; 52, grinding wheel; 6, cylinder. Detailed Implementation Modes

[0042] The following further describes the present application in detail with reference to all the drawings.

[0043] The embodiment of the present application discloses a core grinding machine for composite insulation glue-impregnated paper sleeves.

[0044] Refer to Figure 2 and Figure 3A core grinding machine tool for composite insulating rubber impregnated paper bushing, comprising a sliding frame 1, a grinding wheel 2 for grinding a core column 100 is movably connected to the sliding frame 1, a chassis 3 is arranged on one side of the sliding frame 1, the sliding frame 1 is provided with a clearance groove 11, the sliding frame 1 comprises a grinding part 12 and a grinding part 2 13, the upper end of the chassis 3 is rotatably connected with a clamping assembly 31 for clamping the core column 100, the upper end of the sliding frame 1 is slidably connected with a slider 4, the upper end of the slider 4 is provided with a driving assembly for driving the grinding wheel 2 to rotate, the upper end of the sliding frame 1 is provided with a slide groove 14, the horizontal projection of the slide groove 14 is arc-shaped, and the slider 4 is located inside the slide groove 14; first, the core column 100 is installed on the clamping assembly 31. After installation, one end of the core column 100 in the length direction is located on one side of the clamping assembly 31, and the other end of the core column 100 in the length direction is located on the other side of the clamping assembly 31; by operating the slider 4 to move to the grinding part 12, and then starting by operating the driving assembly, the grinding wheel 2 is driven to rotate, and then the movable grinding wheel 2 is used to grind one end of the core column 100 in the length direction; then the slider 4 is operated to slide, the slider 4 is slid along the slide groove 14, the slider 4 is slid to the position of the grinding part 2 13, and then the other end of the core column 100 in the length direction is grinded by the movable grinding wheel 2, which is very convenient.

[0045] Reference Figure 3 and Figure 4 A horizontal platform 32 is provided at the upper end of the chassis 3, and a through hole 33 is opened on the horizontal platform 32. The clamping assembly 31 includes two three-jaw chucks 34, which are respectively arranged at the two ends of the length direction of the horizontal platform 32, and the two three-jaw chucks 34 are arranged in opposite directions; a motor 35 is provided in the chassis 3, and a synchronous wheel 351 is installed outside the output shaft of the motor 35, and one end of the horizontal platform 32 in the length direction is rotatably connected to a synchronous wheel 452, and the outer ends of the synchronous wheel 351 and the synchronous wheel 452 are connected to the horizontal platform 32. A synchronous belt 422 is provided, and a synchronous wheel 352 is fixedly connected to one of the three-jaw chucks 34. A clearance hole 353 for passing the core column 100 is opened at the axis of the synchronous wheel 352. When installing the core column 100, after the core column 100 passes through the three-jaw chuck 34, the clearance hole 353, the through hole 33 and the other three-jaw chuck 34, the core column 100 is fixed by using two three-jaw chucks 34. The force on the core column 100 is more uniform, and the clamping of the core column 100 is more stable.

[0046] Reference Figure 3 and Figure 5, the outer surface of the sliding carriage 1 is provided with equally spaced teeth 15. The slider 4 is fixedly connected with a driving frame 44. The driving frame 44 extends to the outside of the sliding carriage 1. The lower end of the driving frame 44 is rotatably connected with a gear 442. The gear 442 meshes with the teeth 15. The upper end of the driving frame 44 is provided with a second motor 441. The output shaft of the second motor 441 passes through the driving frame 44 and is fixedly connected to the axis of the gear 442. By operating the rotation of the output shaft of the second motor 441, the gear 442 is driven to rotate. The gear 442 moves along the arrangement of the teeth 15, thereby driving the slider 4 to move inside the chute 14. The structure is simple, the driving is convenient, and it is relatively convenient to move the slider 4.

[0047] Refer to Figure 3 and Figure 5 , move the slider 4 to the first grinding part 12. The first grinding part 12 includes a first limiting plate. The first limiting plate is arranged perpendicular to the core column 100. When grinding the trapezoidal part 200, first move the slider 4 to the position where it abuts against the first limiting plate.

[0048] Refer to Figure 3 and Figure 5 , the upper end of the slider 4 is vertically and slidably connected with a support platform 41. A connecting shaft 411 is rotatably connected to the support platform 41. The connecting shaft 411 is detachably connected to the grinding wheel 2. The driving assembly includes a first motor 42. The first motor 42 is arranged at the upper end of the support platform 41. A first synchronous pulley 421 is installed outside the output shaft of the first motor 42. A second synchronous pulley 412 is installed outside the connecting shaft 411. A synchronous belt 422 is also sleeved outside the first synchronous pulley 421 and the second synchronous pulley 412. The diameter of the first synchronous pulley 421 is larger than the diameter of the second synchronous pulley 412. One end of the connecting shaft 411 away from the support platform 41 is provided with a thread. The grinding wheel 2 is sleeved outside the connecting shaft 411, and then a nut is threadedly connected to the connecting shaft 411. The grinding wheel 2 is fixed to one side of the second synchronous pulley 412 by the nut. By operating the rotation of the output shaft of the first motor 42, the first synchronous pulley 421 and the second synchronous pulley 412 are driven to rotate, thereby driving the grinding wheel 2 to rotate.

[0049] Refer to Figure 3 and Figure 5 , the upper end of the slider 4 is provided with a sliding table 43. The upper end of the sliding table 43 is horizontally and slidably connected with a sliding plate 431. The upper end of the support platform 41 is provided with a plurality of cylinders 6. The piston rods of the cylinders 6 pass through the support platform 41 and are fixedly connected to the sliding plate 431. By operating the retraction of the piston rods of the plurality of cylinders 6, the grinding wheel 2 is driven to descend, and the grinding wheel 2 moves towards the direction close to the core column 100. By operating the rotation of the third synchronous pulley 351 and the fourth synchronous pulley 352, the two three-jaw chucks 34 and the core column 100 are driven to rotate, and the grinding wheel 2 grinds the circumference of the core column 100.

[0050] Refer toFigure 3 and Figure 5 On the sliding table 43, a threaded rod 432 is rotatably connected. On the sliding table 43, a limiting rod 433 is horizontally arranged. The threaded rod 432 and the limiting rod 433 are arranged parallel to each other. The sliding plate 431 is threadedly connected to the threaded rod 432, and the sliding plate 431 is sleeved outside the limiting rod 433. By manipulating the rotation of the output shaft of the driving motor, the threaded rod 432 is driven to rotate, and then the sliding plate 431 is driven to move, and then the support table 41 and the grinding wheel 2 are driven to move. A fourth motor 434 is arranged on the sliding table 43, and the output shaft of the fourth motor 434 is coaxially and fixedly connected to the threaded rod 432. By manipulating the rotation of the output shaft of the fourth motor 434, the threaded rod 432 is driven to rotate, and then the sliding plate 431 is driven to move, and then the support table 41 and the grinding wheel 2 are driven to move. By manipulating the piston rod of the cylinder 6 to extend, the grinding wheel 2 is driven to move in the vertical direction, and then the circumferential direction of the core column 100 is ground.

[0051] Refer to Figure 2 、 Figure 3 and Figure 5 By manipulating the rotation of the output shaft of the second motor 441, the gear 442 is driven to rotate. The gear 442 moves along the arrangement of the teeth 15, and then the slider 4 is driven to move inside the chute 14; thus, the orientation of the grinding wheel 2 is changed. Then, by manipulating the sliding of the sliding table again to drive the grinding wheel to move, the core column 100 is continuously polished until the processing of the trapezoidal part 200 (refer to Figure 1 ) is completed.

[0052] Refer to Figure 2 and Figure 3 After the processing of the trapezoidal part 200 (refer to Figure 1 ) is completed, the output shaft of the second motor 441 is continuously rotated to drive the slider 4 to move inside the chute 14; on the side of the sliding frame 1 away from the chassis 3, there is a grinding device 5 for grinding the grinding wheel 2. The grinding device 5 includes a grinding box 51, and a grinding wheel 52 for grinding the grinding wheel 2 is movably connected inside the grinding box 51; when the grinding wheel 2 needs to be ground, the grinding wheel 2 is moved to the grinding box 51, and the grinding wheel 2 is ground by the grinding wheel 52, thereby improving the grinding accuracy of the subsequent grinding wheel 2 for the core column 100.

[0053] Among them, the grinding device 5 is a prior art, and the grinding wheel 2 can be ground by the movement of the grinding wheel 52, and no more details will be described in this embodiment.

[0054] Refer to Figure 2 and Figure 3, slide the slider 4 to the second grinding part 13. The second grinding part 13 includes a second limiting plate. The second limiting plate forms an angle with the core column 100. By moving the slider 4 to a position where it abuts against the second limiting plate, the grinding wheel 2 also forms an angle with the core column 100. Operate the grinding wheel 2 to rotate, operate the cylinder 6 to adjust the height of the grinding wheel 2, operate the output shaft of the fourth motor 434 to rotate, and then drive the grinding wheel 2 to move in the horizontal direction. The grinding wheel 2 contacts the core column 100 to grind the core column 100, and grind the conical part 300 (refer to Figure 1 ) into a formed shape, completing the processing of the core column 100.

[0055] The working principle of a core grinding machine for a composite insulation paper impregnated sleeve in an embodiment of the present application is as follows: Pass the core column 100 through the horizontal platform 32, and clamp the core column 100 using two three-jaw chucks 34; Operate the second motor 441 to rotate, move the slider 4 to the first grinding part 12, operate the first motor 42 to rotate, and then drive the first synchronous wheel 421 and the second synchronous wheel 412 to rotate, and then drive the grinding wheel 2 to rotate. Then, operate the third motor 35 to rotate, and then drive the third synchronous wheel 351 and the fourth synchronous wheel 352 to rotate, and then drive the core column 100 to rotate. Control the height of the grinding wheel 2 by operating a number of cylinders 6, and then grind the core column 100. Drive the threaded rod 432 to rotate by operating the output shaft of the fourth motor 434 to rotate, and then drive the slide plate 431 to move, and then drive the support platform 41 and the grinding wheel 2 to move in the horizontal direction to grind the core column 100; After grinding one end of the core column 100 in the length direction, operate the output shaft of the second motor 441 to rotate, and then drive the gear 442 to rotate. The gear 442 moves along the arrangement of the teeth 15, slide the slider 4 to the second grinding part 13, the grinding wheel 2 forms an angle with the core column 100, operate the grinding wheel 2 to rotate, then operate the cylinder 6 to adjust the height of the grinding wheel 2, the grinding wheel 2 contacts the core column 100 to grind the core column 100, and then drive the grinding wheel 2 to move in the horizontal direction by operating the output shaft of the fourth motor 434 to rotate, grind the other end of the core column 100 in the length direction into a formed shape, and complete the processing of the core column 100.

[0056] An embodiment of the present application also discloses a grinding method.

[0057] A grinding method includes the following steps:

[0058] S1: Install the core column 100 on the clamping assembly 31, move the slider 4 to the first grinding part 12, operate the first motor 42 to rotate to drive the grinding wheel 2 to rotate, and operate the clamping assembly 31 to rotate;

[0059] S2: Drive the support table 41 to move in the vertical direction by manipulating the cylinder 6, and then drive the grinding wheel 2 to move in the vertical direction. Use the rotation of the grinding wheel 2 in cooperation with the clamping assembly 31 to grind the core column 100;

[0060] S3: Drive the slide plate 431 to slide by manipulating the rotation of the threaded rod 432, and then drive the grinding wheel 2 to move in the horizontal direction to grind multiple positions of the core column 100, completing the grinding of the trapezoidal portion 200;

[0061] S4: Manipulate the slider 4 to slide, slide the slider 4 to the second grinding portion 13, and form an angle between the grinding wheel 2 and the core column 100;

[0062] S5: Drive the support table 41 to move in the vertical direction by manipulating the cylinder 6, and then drive the grinding wheel 2 to move in the vertical direction. Drive the slide plate 431 to slide by manipulating the rotation of the threaded rod 432, and then drive the grinding wheel 2 to move in the horizontal direction. The grinding wheel 2 moves in the direction close to the core column 100, and grind the other end of the core column 100 in the length direction into a conical shape, completing the grinding of the conical portion 300.

[0063] The above are all preferred embodiments of this application. It does not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A core grinding machine for composite insulating rubber-impregnated paper bushing, comprising a sliding frame (1), characterized in that: The sliding frame (1) is movably connected with a grinding wheel (2) for grinding the core column (100), a case (3) is arranged on one side of the sliding frame (1), the sliding frame (1) is provided with a clearance groove (11), the sliding frame (1) comprises a grinding part 1 (12) and a grinding part 2 (13), the upper end of the case (3) is rotatably connected with a clamping assembly (31) for clamping the core column (100), when the clamping assembly (31) clamps the core column (100), the core column (100) passes through the clamping assembly (31), one end of the core column (100) in the length direction is located on one side of the clamping assembly (31), and the other end of the core column (100) in the length direction is located on the other side of the clamping assembly (31), the upper end of the sliding frame (1) is slidably connected with a slider (4), and the upper end of the slider (4) is provided with a driving assembly for driving the grinding wheel (2) to rotate; The upper end of the sliding frame (1) is provided with a sliding groove (14), the horizontal projection of the sliding groove (14) is arc-shaped, the sliding block (4) is located inside the sliding groove (14), the upper end of the sliding block (4) is vertically slidably connected to a support platform (41), the support platform (41) is rotatably connected to a connecting shaft (411), and the connecting shaft (411) is detachably connected to the grinding wheel (2); The grinding part 1 (12) and the grinding part 2 (13) are respectively arranged at two ends of the slide groove (14); The outer surface of the sliding frame (1) is provided with gear teeth (15) at equal intervals, the slider (4) is fixedly connected to a driving frame (44), the driving frame (44) extends to the outside of the sliding frame (1), the lower end of the driving frame (44) is rotatably connected to a gear (442), the gear (442) is meshed with the gear teeth (15), and the upper end of the driving frame (44) is provided with a second motor (441), the output shaft of the second motor (441) passes through the driving frame (44) and is fixedly connected to the axis of the gear (442).

2. A core grinding machine for composite insulating rubber-impregnated paper bushing according to claim 1, characterized in that: The driving assembly comprises a motor (42), wherein the motor (42) is arranged at the upper end of the support platform (41), a synchronous wheel (421) is installed outside the output shaft of the motor (42), a synchronous wheel (412) is installed outside the connecting shaft (411), a synchronous belt (422) is sleeved outside the synchronous wheel (421) and the synchronous wheel (412), and the diameter of the synchronous wheel (421) is larger than the diameter of the synchronous wheel (412).

3. The core grinding machine tool for composite insulating rubber-impregnated paper bushing according to claim 2 is characterized in that: The upper end of the slider (4) is provided with a slide table (43), the upper end of the slide table (43) is horizontally slidably connected to a slide plate (431), and the upper end of the support platform (41) is provided with a plurality of cylinders (6), the piston rods of the cylinders (6) pass through the support platform (41) and are fixedly connected to the slide plate (431).

4. A core grinding machine for composite insulating rubber-impregnated paper bushing according to claim 3, characterized in that: The slide (43) is rotatably connected to a threaded rod (432), a limit rod (433) is horizontally arranged on the slide (43), the threaded rod (432) and the limit rod (433) are arranged parallel to each other, the slide plate (431) is threadably connected to the threaded rod (432), and the slide plate (431) is sleeved on the outside of the limit rod (433).

5. The core grinding machine tool for composite insulating rubber-impregnated paper bushing according to claim 1, characterized in that: The upper end of the chassis (3) is provided with a horizontal platform (32), the horizontal platform (32) is provided with a through hole (33), and the clamping assembly (31) comprises two three-jaw chucks (34), the two three-jaw chucks (34) are respectively arranged at two ends of the horizontal platform (32) in the length direction, and the two three-jaw chucks (34) are arranged in opposite directions.

6. The core grinding machine tool for composite insulating rubber-impregnated paper bushing according to claim 1, characterized in that: The chassis (3) is provided with a motor three (35), the output shaft of the motor three (35) is provided with a synchronous wheel three (351), one end of the horizontal platform (32) in the length direction is rotatably connected with a synchronous wheel four (352), the outsides of the synchronous wheel three (351) and the synchronous wheel four (352) are also sleeved with a synchronous belt (422), the synchronous wheel four (352) is fixedly connected to one of the three-jaw chucks (34), and a clearance hole (353) for passing the core column (100) is opened at the axis of the synchronous wheel four (352).

7. The core grinding machine tool for composite insulating rubber-impregnated paper bushing according to claim 1, characterized in that: A grinding device (5) for grinding the grinding wheel (2) is arranged on a side of the sliding frame (1) away from the chassis (3), and the grinding device (5) comprises a grinding box (51), and a grinding wheel (52) for grinding the grinding wheel (2) is movably connected inside the grinding box (51).

8. A grinding method, characterized in that: Grinding the core column (100) using the core grinding machine tool for composite insulating rubber-impregnated paper bushing as claimed in claim 4 comprises the following steps: S1: Install the core column (100) on the clamping assembly (31), move the slider (4) to the grinding part (12), operate the motor (42) to rotate to drive the grinding wheel (2), and operate the clamping assembly (31) to rotate; S2: The supporting platform (41) is driven to move in the vertical direction by operating the air cylinder (6), thereby driving the grinding wheel (2) to move in the vertical direction, and the core column (100) is ground by the rotation of the grinding wheel (2) in cooperation with the clamping assembly (31); S3: The slide plate (431) is driven to slide by operating the rotation of the threaded rod (432), thereby driving the grinding wheel (2) to move in the horizontal direction, grinding multiple positions of the core column (100), and completing the grinding of the trapezoidal portion (200); S4: operating the slider (4) to slide, and sliding the slider (4) to the second grinding part (13), so that the grinding wheel (2) and the core column (100) form an angle; S5: The air cylinder (6) is operated to drive the support platform (41) to move in the vertical direction, thereby driving the grinding wheel (2) to move in the vertical direction. The rotation of the threaded rod (432) is operated to drive the slide plate (431) to slide, thereby driving the grinding wheel (2) to move in the horizontal direction. The grinding wheel (2) moves in the direction close to the core column (100), and the other end of the core column (100) in the length direction is ground into a cone, thereby completing the grinding of the tapered portion (300).

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