Core body grinding machine tool and grinding method for composite insulating glue impregnated paper sleeve

Abstract

The invention relates to a core body grinding machine tool and a grinding method for a composite insulation glue impregnated paper sleeve, and relates to the technical field of sleeve core body machining. The machine tool comprises a sliding frame, a grinding wheel used for grinding a core body column is movably connected to the sliding frame, a machine box is arranged on one side of the sliding frame, and a receding groove is formed in the sliding frame; the upper end of the machine box is rotationally connected with a clamping assembly used for clamping the core column, when the clamping assembly clamps the core column, the core column penetrates through the clamping assembly, the upper end of the sliding frame is slidably connected with a sliding block, the upper end of the sliding block is provided with a driving assembly used for driving the grinding wheel to rotate, a sliding groove is formed in the upper end of the sliding frame, and the sliding block is located in the sliding groove. And the core column is convenient to polish, the core column does not need to be taken down from the clamping assembly, and convenience is high.

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: 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.

[0007] By adopting the above technical scheme, the core column is installed on the clamping assembly, and then the slider is slid to one grinding part, and then the driving assembly is started by operating to drive the grinding wheel to rotate, and then one end of the core column in the length direction is grinded by the movable grinding wheel; then the slider is operated to slide, the slider is slid along the slide groove, the slider is slid to the position of the second grinding part, and then the other end of the core column in the length direction is grinded by the movable grinding wheel. It is convenient to grind the core column without removing the core column from the clamping assembly, and it is very convenient.

[0008] Optionally, a slide groove is provided at the upper end of the sliding frame, and the horizontal projection of the slide groove is arc-shaped. The slider is located inside the slide groove, and the upper end of the slider is vertically slidably connected to a support platform, and the support platform is rotatably connected to a connecting shaft, and the connecting shaft is detachably connected to the grinding wheel.

[0009] By adopting the above technical solution, when installing the grinding wheel, the connection of the grinding wheel can be completed by installing the grinding wheel on the connecting shaft. 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.

[0010] Optionally, the driving assembly includes a motor 1, which is arranged at the upper end of the support platform, a synchronous wheel 1 is installed outside the output shaft of the motor 1, a synchronous wheel 2 is installed outside the connecting shaft, a synchronous belt is provided on the outer side of the synchronous wheel 1 and the synchronous wheel 2, and the diameter of the synchronous wheel 1 is larger than the diameter of the synchronous wheel 2.

[0011] By adopting the above technical solution, the output shaft of motor 1 is operated to rotate, which drives synchronous wheel 1 to rotate, drives synchronous wheel 2 to rotate, and then drives the connecting shaft and the grinding wheel to rotate, which is used to grind the core column. The structure is simple and the core column is easy to process.

[0012] Optionally, a slide table is provided at the upper end of the slider, and a slide plate is horizontally slidably connected to the upper end of the slide table. A plurality of cylinders are provided at the upper end of the support table, and piston rods of the cylinders pass through the support table and are fixedly connected to the slide plate.

[0013] By adopting the above technical solution, by operating the piston rods of several cylinders to extend, the support platform can be driven to move away from the slide plate, thereby driving the grinding wheel to move in the height direction. By operating the slide plate to slide along the length direction of the slide plate, the support platform can be driven to slide, thereby driving the grinding wheel to move in the horizontal direction. The structure is simple and easy to drive.

[0014] Optionally, the slide is rotatably connected to a threaded rod, a limit rod is horizontally arranged on the slide, the threaded rod and the limit rod are arranged parallel to each other, the slide plate is threadedly connected to the threaded rod, and the slide plate is sleeved on the outside of the limit rod.

[0015] By adopting the above technical solution, the slide plate can be driven to move back and forth along the length direction of the slide table by operating the threaded rod to rotate, which has a simple structure and is easy to drive.

[0016] Optionally, gear teeth are arranged at equal intervals on the outer surface of the sliding frame, the slider is fixedly connected to a driving frame, the driving frame extends to the outside of the sliding frame, the lower end of the driving frame is rotatably connected to a gear, the gear is meshed with the gear teeth, and the upper end of the driving frame is provided with motor 2, the output shaft of motor 2 passes through the driving frame and is fixedly connected to the axis of the gear.

[0017] By adopting the above technical solution, the output shaft of motor 2 is operated to rotate, thereby driving the gear to rotate, and the gear moves along the layout of the gear teeth, thereby driving the slider to move inside the slide groove. The structure is simple, the drive is convenient, and it is relatively convenient to move the slider.

[0018] Optionally, a horizontal platform is provided at the upper end of the chassis, and the horizontal platform is provided with a through hole. The clamping assembly includes two three-jaw chucks, and the two three-jaw chucks are respectively arranged at both ends of the length direction of the horizontal platform, and the two three-jaw chucks are arranged in opposite directions.

[0019] By adopting the above technical solution, the core column is passed through the horizontal platform and two three-jaw chucks, and then the core column is clamped by the two three-jaw chucks. The structure is simple and the clamping is convenient. When the core column is clamped by the two three-jaw chucks, the force on the core column is more uniform and the clamping of the core column is more stable.

[0020] Optionally, a motor three is arranged in the chassis, a synchronous wheel three is installed outside the output shaft of the motor three, one end of the horizontal platform in the length direction is rotatably connected to a synchronous wheel four, a synchronous belt is also sleeved on the outside of the synchronous wheel three and the synchronous wheel four, the synchronous wheel four is fixedly connected to one of the three-jaw chucks, and a clearance hole for passing the core column is opened at the axis center of the synchronous wheel four.

[0021] By adopting the above technical solution, after the core column is clamped by two three-jaw chucks, the output shaft of the motor three can be rotated to drive the synchronous wheel three and the synchronous wheel four to rotate, thereby driving the three-jaw chuck fixed to the synchronous wheel four to rotate, and then driving the core column to rotate. The structure is simple and the driving is convenient.

[0022] Optionally, a grinding device for grinding a grinding wheel is arranged on a side of the sliding frame away from the chassis, and the grinding device comprises a grinding box, in which a grinding wheel for grinding the grinding wheel is movably connected.

[0023] By adopting the above technical solution, if the grinding wheel needs to be polished, the grinding wheel is moved to the polishing box and polished with the grinding wheel, thereby improving the accuracy of subsequent grinding of the core column by the grinding wheel.

[0024] In a second aspect, the present application provides a grinding method, which adopts the following technical solution: A grinding method comprises the following steps: S1: Install the core column on the clamping assembly, move the slider to a grinding part, operate the motor 42 to rotate to drive the grinding wheel to rotate, and operate the clamping assembly to rotate; S2: The support table is driven to move vertically by operating the air cylinder, thereby driving the grinding wheel to move vertically, and the core column is ground by the grinding wheel and the rotation of the clamping assembly; S3: The rotation of the threaded rod is manipulated to drive the slide plate to slide, thereby driving the grinding wheel to move horizontally, grinding multiple positions of the core column to complete the grinding of the trapezoidal part; S4: operate the slider to slide, slide the slider to the second position of the grinding part, and the grinding wheel and the core column form an angle; S5: The cylinder is operated to drive the support table to move in the vertical direction, and then the grinding wheel is driven to move in the vertical direction. The rotation of the threaded rod is operated to drive the slide plate to slide, and then the grinding wheel is driven to move in the horizontal direction. The grinding wheel moves toward the core column, and the other end of the core column in the length direction is ground into a cone, thereby completing the grinding of the tapered portion.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. Install the core column on the clamping assembly, then slide the slider to the first grinding part, then start the driving assembly by operating it, drive the grinding wheel to rotate, and then grind one end of the core column in the length direction through the movable grinding wheel; then operate the slider to slide, slide the slider along the slide groove, slide the slider to the position of the second grinding part, and then grind the other end of the core column in the length direction through the movable grinding wheel. It is convenient to grind the core column, and there is no need to remove the core column from the clamping assembly, which is very convenient; 2. By operating the piston rods of several cylinders to extend, the support table can be driven to move away from the slide plate, thereby driving 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 table can be driven to slide, thereby driving the grinding wheel to move in the horizontal direction. The structure is simple and easy to drive. 3. By operating the output shaft of motor 2 to rotate, the gear is driven to rotate, and the gear moves along the arrangement of the gear teeth, thereby driving the slider to move inside the slide groove. The structure is simple, the drive is convenient, and the slider is easy to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the core column after grinding.

[0027] Figure 2 The present invention is a schematic diagram of the overall structure of a core grinding machine tool for composite insulating rubber-impregnated paper bushings.

[0028] Figure 3 The figure is a schematic diagram of the overall structure from another angle of a core grinding machine tool for composite insulating rubber-impregnated paper bushing.

[0029] Figure 4 It is a cross-sectional diagram of the chassis.

[0030] Figure 5 yes Figure 2 Enlarged schematic diagram of part A.

[0031] Description of reference numerals: 100, core column; 200, trapezoidal portion; 300, conical portion; 1, sliding frame; 11, clearance groove; 12, grinding portion 1; 13, grinding portion 2; 14, sliding groove; 15, gear teeth; 2, grinding wheel; 3, chassis; 31, clamping assembly; 32, horizontal platform; 33, perforation; 34, three-jaw chuck; 35, motor 3; 351, synchronous wheel 3; 352, synchronous wheel 4; 353, clearance groove Position hole; 4, slider; 41, support table; 411, connecting shaft; 412, synchronous wheel 2; 42, motor 1; 421, synchronous wheel 1; 422, synchronous belt; 43, slide; 431, slide plate; 432, threaded rod; 433, limit rod; 434, motor 4; 44, drive frame; 441, motor 2; 442, gear; 5, grinding device; 51, grinding box; 52, grinding wheel; 6, cylinder. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0033] The embodiment of the present application discloses a core grinding machine tool for composite insulating rubber-impregnated paper bushings.

[0034] Reference 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.

[0035] 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.

[0036] Reference Figure 3 and Figure 5The outer surface of the sliding frame 1 is provided with gear teeth 15 at equal intervals, the slider 4 is fixedly connected with 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 with 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 with the axis of the gear 442; the output shaft of the second motor 441 is operated to rotate, thereby driving the gear 442 to rotate, and the gear 442 moves along the arrangement of the gear teeth 15, thereby driving the slider 4 to move inside the slide groove 14, the structure is simple, the driving is convenient, and it is more convenient to move the slider 4.

[0037] Reference Figure 3 and Figure 5 , move the slider 4 to the grinding part 12, the grinding part 12 includes a limit plate 1, the limit plate 1 and the core column 100 are arranged perpendicular to each other. When grinding the trapezoidal part 200, first move the slider 4 to the position abutting against the limit plate 1.

[0038] Reference Figure 3 and Figure 5 The upper end of the slider 4 is vertically slidably connected to a support platform 41, and 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 component includes a motor 42, which 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, and a synchronous wheel 412 is installed outside the connecting shaft 411. A synchronous belt 422 is also sleeved on the outside of 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; the connecting shaft 411 is threadedly arranged at one end away from the support platform 41, and the grinding wheel 2 is sleeved on the outside of the connecting shaft 411, and then a nut is threadedly connected to the connecting shaft 411, and the grinding wheel 2 is fixed to one side of the synchronous wheel 412 by the nut; by operating the output shaft of the motor 42 to rotate, the synchronous wheel 421 and the synchronous wheel 412 are driven to rotate, and then the grinding wheel 2 is driven to rotate.

[0039] Reference Figure 3 and Figure 5 A slide table 43 is provided at the upper end of the slider 4, and a slide plate 431 is horizontally slidably connected to the upper end of the support platform 41. A plurality of cylinders 6 are provided at the upper end of the support platform 41, and the piston rods of the cylinders 6 pass through the support platform 41 and are fixedly connected to the slide plate 431; by operating the piston rods of the plurality of cylinders 6 to retract, the grinding wheel 2 is driven to descend, and the grinding wheel 2 moves toward the direction close to the core column 100, and by operating the synchronous wheel three 351 and the synchronous wheel four 352 to rotate, 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.

[0040] Reference Figure 3 and Figure 5 A threaded rod 432 is rotatably connected to the slide 43, and 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, and the slide plate 431 is threadedly connected to the threaded rod 432, and the slide plate 431 is sleeved on the outside of the limit rod 433; by operating the output shaft of the driving motor to rotate, the threaded rod 432 is driven to rotate, and the slide plate 431 is driven to move, and then the support platform 41 and the grinding wheel 2 are driven to move. A motor 434 is provided on the slide 43, and the output shaft of the motor 434 is coaxially fixedly connected with the threaded rod 432. By operating the output shaft of the motor 434 to rotate, the threaded rod 432 is driven to rotate, and then the slide plate 431 is driven to move, and then the support platform 41 and the grinding wheel 2 are driven to move. By operating the piston rod of the cylinder 6 to extend, the grinding wheel 2 is driven to move in the vertical direction, and then the circumference of the core column 100 is ground.

[0041] Reference Figure 2 , Figure 3 and Figure 5 , by operating the output shaft of the second motor 441 to rotate, thereby driving the gear 442 to rotate, the gear 442 moves along the arrangement of the gear teeth 15, thereby driving the slider 4 to move inside the slide groove 14; thereby changing the direction of the grinding wheel 2, and then operating the slide table to slide again to drive the grinding wheel to move, and continue to grind the core column 100 until the trapezoidal portion 200 is completed (refer to Figure 1 ) processing.

[0042] Reference Figure 2 and Figure 3 , for the trapezoidal portion 200 (refer to Figure 1 ) is processed, the output shaft of the operating motor 2 441 continues to rotate, driving the slider 4 to move inside the slide groove 14; a grinding device 5 for grinding the grinding wheel 2 is arranged on the side of the sliding frame 1 away from the chassis 3, and the grinding device 5 includes a grinding box 51, and a grinding wheel 52 for grinding the grinding wheel 2 is movably connected in the grinding box 51; if it is necessary to grind the grinding wheel 2, the grinding wheel 2 is moved to the grinding box 51, and the grinding wheel 52 is used to grind the grinding wheel 2, thereby improving the accuracy of the subsequent grinding of the core column 100 by the grinding wheel 2.

[0043] 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 will not be described in detail in this embodiment.

[0044] Reference Figure 2 and Figure 3, slide the slider 4 to the grinding part 13, the grinding part 13 includes a limit plate 2, the limit plate 2 forms an angle with the core column 100, by moving the slider 4 to a position abutting against the limit plate 2, the grinding wheel 2 and the core column 100 also form an angle, 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 motor 4 434 to rotate and drive the grinding wheel 2 to move horizontally, the grinding wheel 2 contacts the core column 100 to grind the core column 100, and the tapered portion 300 (refer to Figure 1 ) grinding and forming to complete the processing of the core column 100.

[0045] The working principle of a core grinding machine for composite insulating rubber impregnated paper sleeves according to an embodiment of the present application is as follows: the core column 100 is passed through the horizontal platform 32, and the core column 100 is clamped by two three-jaw chucks 34; the motor 2 441 is operated to rotate, and the slider 4 is moved to the grinding part 12, and the motor 1 42 is operated to rotate, thereby driving the synchronous wheel 1 421 and the synchronous wheel 2 412 to rotate, and then driving the grinding wheel 2 to rotate, and then the motor 3 35 is operated to rotate to drive the synchronous wheel 3 351 and the synchronous wheel 4 352 to rotate, and then driving the core column 100 to rotate, and the height of the grinding wheel 2 is controlled by operating a plurality of cylinders 6 to grind the core column 100, and the output shaft of the motor 434 is operated to rotate to drive the threaded rod 432 to rotate, thereby driving The movable slide 431 moves, thereby driving the support platform 41 and the grinding wheel 2 to move horizontally to grind the core column 100; after grinding one end of the core column 100 in the length direction, the output shaft of the second motor 441 is operated to rotate, thereby driving the gear 442 to rotate, and the gear 442 moves along the arrangement of the gear teeth 15, and the slider 4 is slid to the grinding part 13, and the grinding wheel 2 forms an angle with the core column 100, and the grinding wheel 2 is operated to rotate, and then the cylinder 6 is operated to adjust the height of the grinding wheel 2, and the grinding wheel 2 contacts the core column 100 to grind the core column 100, and then the output shaft of the fourth motor 434 is operated to rotate to drive the grinding wheel 2 to move horizontally, and the other end of the core column 100 in the length direction is ground and formed, and the processing of the core column 100 is completed.

[0046] The embodiment of the present application also discloses a grinding method.

[0047] A grinding method 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 to rotate, and operate the clamping assembly 31 to rotate; S2: The support 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 grinding wheel 2 in cooperation with the rotation of the clamping assembly 31; S3: The slide plate 431 is driven to slide by manipulating the rotation of the threaded rod 432, thereby driving the grinding wheel 2 to move horizontally, grinding multiple positions of the core column 100, and completing the grinding of the trapezoidal portion 200; S4: operating the slider 4 to slide, sliding the slider 4 to the grinding portion 2 13, so that the grinding wheel 2 forms an angle with the core column 100; S5: Operate the cylinder 6 to drive the support platform 41 to move in the vertical direction, and then drive the grinding wheel 2 to move in the vertical direction. Operate the rotation of the threaded rod 432 to drive the slide plate 431 to slide, and then drive the grinding wheel 2 to move in the horizontal direction. The grinding wheel 2 moves toward the direction close to the core column 100, and grinds the other end of the core column 100 in the length direction into a cone, thereby completing the grinding of the tapered portion 300.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present 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.

2. A core grinding machine for composite insulating rubber-impregnated paper bushing according to claim 1, characterized in that: 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).

3. The core grinding machine tool for composite insulating rubber-impregnated paper bushing according to claim 2 is 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).

4. A core grinding machine for composite insulating rubber-impregnated paper bushing according to claim 3, 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).

5. The core grinding machine tool for composite insulating rubber-impregnated paper bushing according to claim 4 is 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).

6. The core grinding machine tool for composite insulating rubber-impregnated paper bushing according to claim 1, characterized in that: 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).

7. 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.

8. 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).

9. 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).

10. 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 5 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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