Pencil core processing-based core nozzle hole wall grinding device and method thereof

Abstract

The invention discloses a core nozzle hole wall grinding device and method based on pencil lead machining, and relates to the technical field of hole wall grinding, the core nozzle hole wall grinding device comprises a machine tool and a core drilling rod, a clamping disc is arranged in the machine tool, a clamping piece is arranged in the machine tool, a push rod is arranged on one side of the interior of the clamping piece, and the push rod is arranged on the other side of the interior of the clamping piece; and a dust collection mechanism for cleaning dust is arranged in the clamping piece. By means of the design of the stable drilling assembly, highly stable support can be provided, so that deviation or shaking cannot occur in the grinding process, the periphery of the hole wall is evenly and finely ground, friction resistance is reduced, pencil lead mud materials can be more smoothly extruded out through a die hole, and the quality of the pencil lead mud materials is improved. Burrs and irregular parts on the hole wall are removed through fine grinding, and the problem that the pencil lead is broken or the surface of the pencil lead is uneven due to defects of the hole wall is solved.

Description

Technical Field

[0001] The invention relates to the technical field of hole wall grinding, and in particular to a core tip hole wall grinding device based on pencil lead processing and a method thereof. Background Art

[0002] The core tip of the pencil lead is the mold used in the processing of the pencil lead. By drilling a hole in the middle of the workpiece and grinding the hole wall, it is processed into a workpiece that can extrude pencil lead mud for production.

[0003] For example, the publication number is CN105538057B, a method for grinding the center hole of a roller on a CNC horizontal lathe, which includes starting the CNC horizontal lathe, moving the grinding wheel into the hole of the center hole of the roller, and after aligning the tool, feeding the grinding wheel obliquely according to the semi-cone angle of the center hole of the roller while rotating; after one cut, feeding the second cut along the diameter direction of the center hole of the roller; and repeating this process until the size and smoothness of the center hole of the roller meet the requirements.

[0004] For example, the publication number is CN115157034A, which is a core tip grinding device and grinding method, belonging to the field of pen refill production. It solves the problems that the existing core tip grinding has high technical requirements for operators and low operating efficiency, and the core tips produced have low dimensional accuracy, low smoothness and low product qualification rate.

[0005] When the above-mentioned grinding device is used, the workpiece produced is blocked from extrusion of pencil lead material, broken finished products or uneven surfaces due to uneven grinding of the hole wall, burrs or dead corners, and the vibration of the small-diameter core drill rod during high-speed rotation causes processing errors and equipment wear. The present application provides a core nozzle hole wall grinding device and method, which ensures smooth and uniform hole walls by optimizing grinding coverage and vibration reduction design, and improves processing accuracy and product consistency. Summary of the invention

[0006] The purpose of the present application is to provide a pencil tip hole wall grinding device and method based on pencil lead processing, which can effectively solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a core tip hole wall grinding device based on pencil lead processing, comprising a machine tool and a core drill rod, wherein a clamping disc is arranged inside the machine tool, a clamping member is arranged inside the machine tool, a push rod is arranged on one side inside the clamping member, a dust suction mechanism for cleaning dust is arranged inside the clamping member, a clamping pipe is arranged inside the dust suction mechanism, and a hole cutting mechanism for grinding a workpiece is arranged inside the clamping pipe;

[0008] The hole cutting mechanism comprises a supporting drilling assembly for stably supporting a core drill rod to drill a workpiece, a stabilizing drilling assembly for adjusting an angle deviation of the core drill rod, and a grinding mechanism for grinding the core nozzle hole wall.

[0009] Among them, the dust suction mechanism includes a fan and an inner cavity, the inner cavity is installed inside the clamping member, a support frame is provided on one side of the inner cavity, a ring sheet is provided at one end of the support frame, and the clamping pipe is installed inside the support frame, an air duct that passes through the clamping member and communicates with the fan is provided inside the inner cavity, and the fan is installed on one side of the clamping member.

[0010] Among them, the support drilling assembly includes a mounting tube, which is installed inside the support frame. A support block is arranged on one side of the interior of the mounting tube. A support ring is slidably installed inside the support block, and the support ring is sleeved on the outer surface of the core drilling rod.

[0011] A plurality of mounting blocks distributed in a circular array are arranged in the middle of the inner wall of the mounting tube, a support rod is rotatably installed inside the mounting block, a clamping block is rotatably installed at one end of the support rod, and a slider is arranged on the outer surface of the clamping block.

[0012] A top column is slidably mounted inside the mounting tube, a screw rod for adjusting the position of the top column is arranged on one side of the top column, and a sliding groove is arranged on the inner wall of the top column.

[0013] The sliding block is slidably mounted inside the sliding groove, the clamping block is fitted on the outer surface of the core drill rod, and the mounting tube is mounted inside the clamping tube.

[0014] Among them, the stable drilling assembly includes a first clamping tube, an internal control is opened inside the first clamping tube, a cover column is slidably installed inside the first clamping tube, a flat spring is arranged on one side of the cover column, a stable pipe sleeve is arranged at one end of the cover column, an inner pipe sleeve is arranged inside the stable pipe sleeve, the inner pipe sleeve is arranged on the outer surface of the core drilling rod, and the core drilling rod extends to the inside of the internal control.

[0015] Wherein, the outer surface of the stabilizing sleeve is provided with a grinding sheet, and the first clamping tube is installed inside the clamping tube.

[0016] Among them, the grinding mechanism includes a second clamping tube, a push rod is slidably installed inside the second clamping tube, a baffle is sleeved on the outer surface of the push rod, a spring is sleeved on the outer surface of the push rod and located inside the second clamping tube, a connecting column is provided at one end of the spring, a limiting block is provided on one side of the inner wall of the second clamping tube, the connecting column is slidably installed on the outer surface of the limiting block, one end of the connecting column is connected to the grinding rod, the second clamping tube is installed inside the clamping pipe, and one end of the push rod is in contact with the pushing end of the push rod.

[0017] The present invention also provides a method for using a core tip hole wall grinding device for pencil lead processing, and the specific method of use is as follows:

[0018] S1. When grinding the hole wall of the core tip of the pencil lead, the stable drilling assembly, the supporting drilling assembly and the grinding mechanism in the hole cutting mechanism can be replaced to meet the different grinding requirements of the workpiece. When grinding the workpiece, the dust collection mechanism can be used to remove the debris generated during grinding;

[0019] S2. When the workpiece is ground by the stable drilling assembly, the stable drilling assembly cooperates with the core drill rod to grind the workpiece clamped inside the clamping plate, and the stable drilling assembly can grind the periphery of the core nozzle hole wall, so that the pencil core mud material can be smoothly extruded through the die hole;

[0020] S3. When the support drilling assembly is used in conjunction with the core drilling rod to grind the workpiece clamped inside the clamping plate, the support drilling assembly can adjust the position of the core drilling rod to support the workpiece, thereby reducing the vibration of the core drilling rod when drilling the workpiece;

[0021] S4. When the grinding mechanism is replaced to grind the workpiece, the clamping plate drives the workpiece to rotate and approach the grinding mechanism, and the grinding mechanism cooperates with the push rod to grind the core nozzle hole wall, and the push rod used enables the grinding mechanism to move back and forth in the workpiece mold hole for grinding.

[0022] In summary, the technical effects and advantages of the present invention are as follows:

[0023] 1. The present invention can provide highly stable support through the design of a stable drilling component, so that there will be no deviation or jitter during the grinding process, thereby achieving uniform and fine grinding of the hole wall around it, reducing friction resistance, allowing the pencil lead mud material to be extruded more smoothly through the die hole, and removing burrs and irregular parts on the hole wall through fine grinding, thereby reducing the problem of pencil lead breakage or uneven surface caused by hole wall defects.

[0024] 2. The clamping plate in the present invention drives the workpiece to rotate, so that the grinding mechanism can contact the workpiece surface from multiple angles, ensuring that the core nozzle hole wall is evenly and carefully ground. The use of the push rod allows the grinding mechanism to move back and forth accurately in the workpiece die hole, ensuring the consistency and flatness of the hole wall surface. Since the clamping plate can rotate continuously, and the push rod drives the grinding mechanism to move inside the die hole, through all-round and multi-level grinding treatment, it can ensure that the hole wall surface reaches a very high degree of finish, reduce friction resistance, and enable the pencil lead material to be extruded more smoothly through the die hole, avoiding the problem of pencil lead breakage or surface unevenness caused by hole wall defects.

[0025] 3. When the clamping disc drives the workpiece to rotate, the core drill rod in the present invention can directly grind the workpiece to form the preliminary shape of the hole wall. When the grinding disc contacts the workpiece, the hole wall after drilling is further finely ground to ensure a smooth surface without burrs. The "drilling + grinding" combined process combines the rough grinding of the core drill rod with the fine grinding of the grinding disc to ensure the dimensional accuracy and surface finish of the hole wall and meet the requirements of smooth extrusion of pencil lead materials. When the grinding disc contacts the workpiece, the reaction force generated will push the cover column to compress the flat spring, thereby driving the inner sleeve to move along the core drill rod, and adjusting the support point position of the core drill rod in real time through elastic deformation. In addition, the rubber material of the inner sleeve and the stabilizing sleeve can absorb vibration energy and reduce the amplitude of the core drill rod during high-speed rotation or feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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 of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of the three-dimensional structure of a core tip hole wall grinding device for processing pencil leads;

[0028] Figure 2 A schematic diagram of a partial three-dimensional structure of a core tip hole wall grinding device for processing pencil leads;

[0029] Figure 3 A cross-sectional view of a three-dimensional connection structure supporting a drilling assembly and a dust suction mechanism;

[0030] Figure 4 It is a schematic diagram of the three-dimensional connection structure of the dust collection mechanism and the grinding mechanism;

[0031] Figure 5 It is a schematic diagram of the three-dimensional connection structure of the dust collection mechanism;

[0032] Figure 6 It is a cross-sectional view of the three-dimensional connection structure of the grinding mechanism;

[0033] Figure 7 It is a schematic diagram of the local three-dimensional connection structure of the grinding mechanism;

[0034] Figure 8 A schematic diagram of a three-dimensional connection structure supporting a drilling assembly;

[0035] Fig. 9 A cross-sectional view of a three-dimensional connection structure supporting a drilling assembly from a first perspective;

[0036] Fig.10A sectional view of a stereoscopic connection structure supporting a drilling assembly from a second perspective;

[0037] Fig.11 A sectional view of a three-dimensional connection structure supporting a drilling assembly from a third perspective;

[0038] Fig.12 It is a schematic diagram of the three-dimensional connection structure of the card block and the support rod;

[0039] Fig.13 A schematic diagram of a three-dimensional connection structure for stabilizing the drilling assembly;

[0040] Fig.14 A cross-sectional view of a three-dimensional connection structure for stabilizing a drilling assembly;

[0041] Fig.15 A cross-sectional view of the three-dimensional connection structure for stabilizing the pipe sleeve;

[0042] Fig.16 It is a schematic diagram of the three-dimensional connection structure of the grinding disc;

[0043] Fig.17 It is a schematic diagram of the three-dimensional connection structure of the grinding mechanism;

[0044] Fig.18 It is a cross-sectional view of the three-dimensional connection structure of the grinding mechanism.

[0045] In the figure: 1, machine tool; 2, clamping plate; 3, clamping member; 4, dust suction mechanism; 41, fan; 42, air duct; 43, ring plate; 44, support frame; 45, inner cavity; 5, stable drilling assembly; 51, first clamping tube; 52, internal control; 53, flat spring; 54, cover column; 55, grinding plate; 56, stable pipe sleeve; 57, inner pipe sleeve; 6, support drilling assembly; 61, mounting tube; 62, support block; 63, support ring; 64, mounting block; 65, support rod; 66, clamping block; 67, ejector column; 68, screw rod; 69, slide groove; 60, slider; 7, grinding mechanism; 71, ejector rod; 72, baffle; 73, spring; 74, second clamping tube; 75, connecting column; 76, limit block; 77, grinding rod; 8, push rod; 9, core drilling rod; 10, clamping pipe fittings. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Example 1, Reference Figures 1 to 18The core tip hole wall grinding device based on pencil lead processing shown in the figure comprises a machine tool 1 and a core drill rod 9, a clamping plate 2 is arranged inside the machine tool 1, a clamping member 3 is arranged inside the machine tool 1, a push rod 8 is arranged on one side of the clamping member 3, a dust collecting mechanism 4 for cleaning dust is arranged inside the clamping member 3, a clamping pipe 10 is arranged inside the dust collecting mechanism 4, and a hole cutting mechanism for grinding a workpiece is arranged inside the clamping pipe 10;

[0048] The hole cutting mechanism comprises a supporting drilling assembly 6 for stably supporting the core drill rod 9 to drill a workpiece, a stabilizing drilling assembly 5 for adjusting the angle deviation of the core drill rod 9 and a grinding mechanism 7 for grinding the core nozzle hole wall.

[0049] It is worth noting that when grinding the core tip hole wall of the pencil lead, the different grinding requirements of the workpiece can be met by replacing the stable drilling component 5, the supporting drilling component 6 and the grinding mechanism 7 in the hole cutting mechanism. When grinding the workpiece, the dust suction mechanism 4 can be used to remove the debris generated during grinding. Since the diameter of the pencil lead is small, the diameter of the core drill rod 9 used is also the same as the diameter of the pencil lead.

[0050] When the stable drilling assembly 5 is used to grind the workpiece, the stable drilling assembly 5 cooperates with the core drill rod 9 to grind the workpiece clamped inside the clamping plate 2, and the stable drilling assembly 5 can grind the periphery of the core nozzle hole wall, so that the pencil core mud material can be smoothly extruded through the die hole;

[0051] Among them, the design of the stable drilling component 5 can provide highly stable support, so that there will be no deviation or shaking during the grinding process, thereby achieving uniform and fine grinding of the hole wall around it, reducing friction resistance, so that the pencil lead mud material can be extruded more smoothly through the die hole, and the burrs and irregular parts on the hole wall are removed by fine grinding, reducing the problem of pencil lead breakage or uneven surface caused by hole wall defects.

[0052] When the support drilling assembly 6 is used in conjunction with the core drilling rod 9 to grind the workpiece clamped inside the clamping plate 2, the support drilling assembly 6 can adjust the position of the core drilling rod 9 to support the core drilling rod 9, thereby reducing the vibration of the core drilling rod 9 when drilling the workpiece;

[0053] The support drilling assembly 6 can adjust the position of its support point as needed to ensure that the core drill rod 9 remains stable during the entire grinding process, thereby reducing vibration and shaking caused by imbalance or mechanical instability of the core drill rod 9.

[0054] By reducing the vibration, the hole wall can be polished more evenly, the smoothness of the hole wall can be improved, and the consistency of the hole diameter can be ensured, which helps the pencil lead material to be extruded smoothly through the die hole.

[0055] When the grinding mechanism 7 is replaced to grind the workpiece, the clamping plate 2 drives the workpiece to rotate and approach the grinding mechanism 7, and the grinding mechanism 7 cooperates with the push rod 8 to grind the core nozzle hole wall, and the push rod 8 used enables the grinding mechanism 7 to move back and forth in the workpiece mold hole for grinding.

[0056] The clamping plate 2 drives the workpiece to rotate, so that the grinding mechanism 7 can contact the workpiece surface from multiple angles, ensuring that the core nozzle hole wall is evenly and carefully ground around.

[0057] The use of the push rod 8 allows the grinding mechanism to move back and forth accurately in the die hole of the workpiece, ensuring the consistency and flatness of the hole wall surface. Since the clamping plate 2 can rotate continuously, and the push rod 8 drives the grinding mechanism to move inside the die hole, through all-round and multi-level grinding treatment, it can ensure that the hole wall surface reaches a very high degree of smoothness, reduce friction resistance, and enable the pencil lead material to be extruded through the die hole more smoothly, avoiding the problem of pencil lead breakage or surface unevenness caused by hole wall defects.

[0058] Embodiment 2: Based on the dust collection mechanism 4 provided in Embodiment 1, this embodiment provides a further technical solution of the dust collection mechanism 4.

[0059] The dust suction mechanism 4 includes a fan 41 and an inner cavity 45, the inner cavity 45 is installed inside the clamping member 3, a support frame 44 is provided on one side of the inner cavity 45, a ring sheet 43 is provided at one end of the support frame 44, and the clamping pipe 10 is installed inside the support frame 44, and an air duct 42 that passes through the clamping member 3 and communicates with the fan 41 is provided inside the inner cavity 45, and the fan 41 is installed on one side of the clamping member 3.

[0060] It is worth mentioning that when the workpiece inside the clamping plate 2 is processed, the dust generated by the grinding of the clamping plate 2 is sucked into the support frame 44, and the ring plate 43 is used to adopt an arc shape to converge the air inlet, so that the dust can more easily enter the inner cavity 45, and the dust inside the inner cavity 45 is sucked into the inside of the fan 41 through the ring plate 43.

[0061] Embodiment 3: Based on the hole cutting mechanism provided in Embodiment 1, this embodiment provides a further technical solution for supporting the drilling assembly 6.

[0062] The support drilling assembly 6 includes a mounting tube 61, which is installed inside the support frame 44. A support block 62 is provided on one side of the mounting tube 61. A support ring 63 is slidably installed inside the support block 62, and the support ring 63 is sleeved on the outer surface of the core drilling rod 9.

[0063] A plurality of mounting blocks 64 distributed in a circular array are arranged in the middle of the inner wall of the mounting tube 61 , a support rod 65 is rotatably mounted inside the mounting block 64 , a clamping block 66 is rotatably mounted at one end of the support rod 65 , and a slider 60 is arranged on the outer surface of the clamping block 66 .

[0064] A top column 67 is slidably mounted inside the mounting tube 61 . A screw rod 68 for adjusting the position of the top column 67 is disposed on one side of the top column 67 . A sliding groove 69 is disposed on the inner wall of the top column 67 .

[0065] It is worth noting that when in use, the core drill rod 9 is extended through the support ring 63 to the position of the block 66, and then the top column 67 is pushed to move by rotating the screw 68, and the movement of the top column 67 drives the slider 60 to slide inside the slide groove 69, and the movement of the top column 67 squeezes a plurality of blocks 66 to move relatively, and the blocks 66 are arranged to be Fig.11 and Fig.12 The shape shown in the figure can clamp and fix the core drill rod 9 by squeezing the clamping block 66, and then the mounting tube 61 can be fixedly installed inside the clamping tube 10. When in use, the support ring 63 inside the support block 62 can be pushed to extend the support ring 63, and the support ring 63 and the support block 62 are both made of plastic material, which can reduce the amplitude of the core drill rod 9 during use.

[0066] The sliding block 60 is slidably installed inside the sliding groove 69 , and the clamping block 66 is attached to the outer surface of the core drilling rod 9 , and the mounting tube 61 is installed inside the clamping pipe 10 .

[0067] By rotating the screw rod, the top column pushes the slider 60 to slide in the slide groove 69, thereby squeezing the block 66. Fig.11 and 12 The special shape design shown achieves the clamping of the core drill rod 9 through mechanical linkage. The extrusion block 66 is designed as a conical or arc-shaped clamping jaw structure, which can generate a uniform radial clamping force through extrusion to ensure that the core drill rod is firmly fixed and prevent it from loosening during high-speed rotation or processing.

[0068] Embodiment 4: Based on the hole cutting mechanism provided in Embodiment 1, this embodiment provides a further technical solution for stabilizing the drilling assembly 5.

[0069] The stable drilling assembly 5 includes a first clamping tube 51, an internal control 52 is opened inside the first clamping tube 51, a cover column 54 is slidably installed inside the first clamping tube 51, a flat spring 53 is arranged on one side of the cover column 54, a stable pipe sleeve 56 is arranged at one end of the cover column 54, an inner pipe sleeve 57 is arranged inside the stable pipe sleeve 56, the inner pipe sleeve 57 is sleeved on the outer surface of the core drilling rod 9, and the core drilling rod 9 extends to the inside of the internal control 52.

[0070] The outer surface of the stabilizing sleeve 56 is sleeved with a grinding disc 55 , and the first clamping pipe 51 is installed inside the clamping pipe 10 .

[0071] It is worth noting that when in use, the core drill rod 9 is extended through the inner tube sleeve 57 to the inner control 52, and then the tail end of the first clamping tube 51 is tightened by bolts to tighten the inner control 52 to fix the core drill rod 9 inside the inner control 52. When in use, the clamping plate 2 drives the workpiece to rotate, and the core drill rod 9 grinds the workpiece on the clamping plate 2 through the core drill rod 9. When the grinding disc 55 contacts the workpiece, the hole wall after the core drill rod 9 is drilled is ground, and the inner tube sleeve 57 and the stabilizing tube sleeve 56 are both adopted. The pencil lead is made of rubber material. Since the pencil lead itself has a small diameter, the core drill rod 9 has a diameter similar to that of the pencil lead. Therefore, the core drill rod 9 can be supported by the inner sleeve 57 to grind the workpiece. When the grinding disc 55 contacts the workpiece, the stabilizing sleeve 56 pushes the cover column 54 to move inside the first clamping tube 51. The cover column 54 squeezes the flat spring 53 to contract. The movement of the cover column 54 drives the inner sleeve 57 to interact with the outer surface of the core drill rod 9. The movement of the inner sleeve 57 changes the force support point of the core drill rod 9.

[0072] The rear end of the first clamping tube 51 is tightened by bolts to apply radial pressure to the inner control 52, so that the core drill rod 9 is firmly clamped inside the inner control 52, ensuring that the core drill rod will not loosen or deviate during the processing.

[0073] The inner tube sleeve 57 and the stabilizing tube sleeve 56 made of rubber material can dynamically adjust the supporting point according to the processing load, thereby enhancing the stability of the core drill rod, which is particularly effective on a core drill rod with a small diameter similar to that of a pencil lead.

[0074] When the clamping plate 2 drives the workpiece to rotate, the core drill rod 9 can directly grind the workpiece to form the preliminary shape of the hole wall. When the grinding disc contacts the workpiece, the hole wall after drilling is further finely ground to ensure a smooth surface without burrs. The "drilling + grinding" combined process combines the rough grinding of the grinding disc 55 of the core drill rod 9 with the fine grinding of the grinding disc to ensure the dimensional accuracy and surface finish of the hole wall and meet the requirements of smooth extrusion of pencil lead material.

[0075] When the grinding disc 55 contacts the workpiece, the reaction force generated will push the cover column 54 to compress the flat spring 53, thereby driving the inner sleeve 57 to move along the core drill rod, and adjust the support point position of the core drill rod in real time through elastic deformation. In addition, the rubber material of the inner sleeve 57 and the stabilizing sleeve 56 can absorb vibration energy and reduce the amplitude of the core drill rod when it rotates or feeds at high speed.

[0076] Embodiment 5: Based on the hole cutting mechanism provided in embodiment 1, this embodiment provides a further technical solution for the grinding mechanism 7.

[0077] The grinding mechanism 7 includes a second clamping tube 74, a push rod 71 is slidably installed inside the second clamping tube 74, a baffle 72 is sleeved on the outer surface of the push rod 71, a spring 73 is sleeved on the outer surface of the push rod 71 and located inside the second clamping tube 74, a connecting column 75 is provided at one end of the spring 73, a limiting block 76 is provided on one side of the inner wall of the second clamping tube 74, the connecting column 75 is slidably installed on the outer surface of the limiting block 76, one end of the connecting column 75 is connected to a grinding rod 77, the second clamping tube 74 is installed inside the clamping pipe 10, and one end of the push rod 71 is in contact with the pushing end of the push rod 8.

[0078] It is worth mentioning that when in use, the grinding rod 77 is installed on the connecting column 75, and then the second clamping tube 74 is installed inside the clamping pipe 10. When the second clamping tube 74 is installed, the push rod 71 is made to contact the pushing end of the push rod 8. When the core nozzle hole wall is ground, the grinding rod 77 extends into the hole wall, and the grinding rod 77 grinds the hole wall. While the grinding rod 77 is grinding, the push rod 8 pushes the push rod 71 back and forth to move, and the push rod 71 contracts through the blocking piece 72 to squeeze the spring 73, so that the connecting column 75 slides on the outer surface of the limit block 76, and the core nozzle hole wall can be ground back and forth through the push of the connecting column 75.

[0079] Among them, the push rod 8 serves as a power source, which drives the grinding rod 77 to move back and forth in the hole wall by pushing the push rod 71 back and forth, thereby ensuring the continuity and uniformity of the grinding process. When the push rod 8 pushes the push rod 71, the baffle 72 squeezes the spring 73 to contract, and the spring releases its elastic potential energy to push the push rod to move in the opposite direction, forming an automatic reset function to ensure the continuity of the reciprocating motion. The reciprocating motion enables the grinding rod 77 to grind various areas of the hole wall multiple times, avoiding uneven grinding caused by unidirectional motion.

[0080] The present invention also provides a method for using a core tip hole wall grinding device for pencil lead processing, and the specific method of use is as follows:

[0081] S1. When grinding the hole wall of the core tip of the pencil lead, the stable drilling component 5, the supporting drilling component 6 and the grinding mechanism 7 in the hole cutting mechanism can be replaced to meet the different grinding requirements of the workpiece. When grinding the workpiece, the dust collection mechanism 4 can be used to remove the debris generated during grinding;

[0082] S2. When the workpiece is ground by the stable drilling assembly 5, the stable drilling assembly 5 cooperates with the core drill rod 9 to grind the workpiece clamped inside the clamping plate 2, and the stable drilling assembly 5 can grind the periphery of the core nozzle hole wall so that the pencil core mud material can be smoothly extruded through the die hole;

[0083] S3, when the support drilling assembly 6 is used in conjunction with the core drilling rod 9 to grind the workpiece clamped inside the clamping plate 2, the support drilling assembly 6 can adjust the position of the core drilling rod 9 to support the core drilling rod 9, thereby reducing the shaking of the core drilling rod 9 when drilling the workpiece;

[0084] S4. When the grinding mechanism 7 is replaced to grind the workpiece, the clamping plate 2 drives the workpiece to rotate and approach the grinding mechanism 7, and the grinding mechanism 7 cooperates with the push rod 8 to grind the core nozzle hole wall, and the push rod 8 used enables the grinding mechanism 7 to move back and forth in the workpiece mold hole for grinding.

[0085] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A core tip hole wall grinding device based on pencil lead processing, comprising a machine tool (1) and a core drill rod (9), wherein a clamping plate (2) is arranged inside the machine tool (1), and characterized in that: The machine tool (1) is provided with a clamping member (3) inside, a push rod (8) is provided on one side of the inside of the clamping member (3), a dust collecting mechanism (4) for cleaning dust is provided inside the clamping member (3), a clamping pipe (10) is provided inside the dust collecting mechanism (4), and a hole cutting mechanism for grinding a workpiece is provided inside the clamping pipe (10); The hole cutting mechanism comprises a supporting drilling assembly (6) for stably supporting a core drill rod (9) for drilling a workpiece, a stabilizing drilling assembly (5) for adjusting an angle deviation of the core drill rod (9), and a grinding mechanism (7) for grinding the core nozzle hole wall.

2. The pencil tip hole wall grinding device based on pencil lead processing according to claim 1, characterized in that: The dust collecting mechanism (4) comprises a fan (41) and an inner cavity (45), wherein the inner cavity (45) is installed inside the clamping member (3), a support frame (44) is provided on one side of the inner cavity (45), a ring sheet (43) is provided on one end of the support frame (44), and the clamping pipe (10) is installed inside the support frame (44), and an air duct (42) is provided inside the inner cavity (45) and passes through the clamping member (3) and communicates with the fan (41), and the fan (41) is installed on one side of the clamping member (3).

3. The pencil tip hole wall grinding device based on pencil lead processing according to claim 2, characterized in that: The support drilling assembly (6) comprises a mounting tube (61), wherein the mounting tube (61) is mounted inside the support frame (44), a support block (62) is arranged on one side inside the mounting tube (61), a support ring (63) is slidably mounted inside the support block (62), and the support ring (63) is sleeved on the outer surface of the core drilling rod (9).

4. The pencil tip hole wall grinding device based on pencil lead processing according to claim 3, characterized in that: A plurality of mounting blocks (64) distributed in a circular array are arranged in the middle of the inner wall of the mounting tube (61); a support rod (65) is rotatably mounted inside the mounting block (64); a clamping block (66) is rotatably mounted on one end of the support rod (65); and a sliding block (60) is arranged on the outer surface of the clamping block (66).

5. The pencil tip hole wall grinding device based on pencil lead processing according to claim 4, characterized in that: A top column (67) is slidably mounted inside the mounting tube (61), a screw rod (68) for adjusting the position of the top column (67) is arranged on one side of the top column (67), and a sliding groove (69) is provided on the inner wall of the top column (67).

6. The pencil tip hole wall grinding device based on pencil lead processing according to claim 5, characterized in that: The slider (60) is slidably mounted inside the slide groove (69), and the clamping block (66) is attached to the outer surface of the core drill rod (9), and the mounting tube (61) is mounted inside the clamping tube (10).

7. The pencil tip hole wall grinding device based on pencil lead processing according to claim 1, characterized in that: The stable drilling assembly (5) comprises a first clamping tube (51), an internal control (52) is provided inside the first clamping tube (51), a cover column (54) is slidably installed inside the first clamping tube (51), a flat spring (53) is provided on one side of the cover column (54), a stable pipe sleeve (56) is provided at one end of the cover column (54), an inner pipe sleeve (57) is provided inside the stable pipe sleeve (56), the inner pipe sleeve (57) is sleeved on the outer surface of the core drilling rod (9), and the core drilling rod (9) extends to the inside of the internal control (52).

8. The pencil tip hole wall grinding device based on pencil lead processing according to claim 7, characterized in that: The outer surface of the stabilizing sleeve (56) is sleeved with a grinding sheet (55), and the first clamping tube (51) is installed inside the clamping tube (10).

9. The pencil tip hole wall grinding device based on pencil lead processing according to claim 1, characterized in that: The grinding mechanism (7) comprises a second clamping tube (74), a push rod (71) is slidably mounted inside the second clamping tube (74), a blocking sheet (72) is sleeved on the outer surface of the push rod (71), a spring (73) is sleeved on the outer surface of the push rod (71) and located inside the second clamping tube (74), a connecting column (75) is arranged at one end of the spring (73), a limiting block (76) is arranged at one side of the inner wall of the second clamping tube (74), the connecting column (75) is slidably mounted on the outer surface of the limiting block (76), one end of the connecting column (75) is connected to a grinding rod (77), the second clamping tube (74) is mounted inside the clamping pipe (10), and one end of the push rod (71) is in contact with the pushing end of the push rod (8).

10. A method for using the core tip hole wall grinding device for pencil lead processing based on any one of the machine tools of claims 1 to 9, characterized in that: The specific usage is as follows: S1. When grinding the hole wall of the core tip of a pencil lead, different grinding requirements of the workpiece can be met by replacing the stable drilling component (5), the supporting drilling component (6) and the grinding mechanism (7) in the hole cutting mechanism. When grinding the workpiece, the dust collecting mechanism (4) can be used to remove the debris generated during grinding. S2. When the workpiece is ground by the stable drilling assembly (5), the stable drilling assembly (5) cooperates with the core drill rod (9) to grind the workpiece clamped inside the clamping plate (2), and the stable drilling assembly (5) can grind the periphery of the core nozzle hole wall so that the pencil core mud material can be smoothly extruded through the die hole; S3. When the support drilling assembly (6) is used in conjunction with the core drilling rod (9) to grind the workpiece clamped inside the clamping plate (2), the support drilling assembly (6) can adjust the position of the core drilling rod (9) to support the core drilling rod, thereby reducing the vibration of the core drilling rod (9) when drilling the workpiece; S4. When the grinding mechanism (7) is replaced to grind the workpiece, the clamping plate (2) drives the workpiece to rotate and approach the grinding mechanism (7), and the grinding mechanism (7) cooperates with the push rod (8) to grind the core nozzle hole wall, and the push rod (8) enables the grinding mechanism (7) to move back and forth in the workpiece die hole for grinding.

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