Drilling device for cutting blade

Abstract

The invention discloses a drilling device for a cutting blade, and belongs to the technical field of drilling, and the drilling device can adapt to and be provided with various drill bits of different models. And through tight connection of the fixing pin and the rotating column, the stability of the drill bit in the rotating process is ensured. Meanwhile, the stability of the fixator is enhanced through the design of the conical head at the end of the fixing pin, and it is ensured that the fixator can be effectively fixed through cooperation with corresponding components. In the aspect of rotation stability, the device realizes smooth rotation of the rotating column through meshing connection of the driving gear and the driving gear sleeve. A mounting hole for mounting a fixing pin is formed in the end part of the rotating column, and a pre-tightening cavity and a plurality of clamping jaws are arranged in the rotating column. When the curved surface on the clamping jaw is tightly attached to the conical surface of the conical head, strong clamping force can be generated, the conical head is firmly locked in the mounting hole, and therefore it is guaranteed that the rotating column can smoothly drive the fixing device and a drill bit mounted on the fixing device to rotate together in the rotating process.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling, and particularly to a drilling device for cutting blades. Background Art

[0002] In the metal processing industry, the drilling operation of cutting products is a common and important technological process. Traditionally, such operations usually rely on manual operation or simple mechanical equipment to complete, but these methods often have problems such as low efficiency, insufficient precision, and complex operation.

[0003] During the drilling process, how to ensure the stable rotation of the drill bit is also a key issue. Traditional devices may have poor rotation due to unreasonable design or excessive friction between components, which not only reduces the drilling efficiency but may also damage the equipment.

[0004] In addition, the process of disassembling and replacing the drill bit is also a link that needs to be optimized. Traditional disassembly methods may be too complex, requiring the use of special tools or consuming a lot of effort, which not only increases the operation difficulty but may also affect the reliability and service life of the equipment. Summary of the Invention

[0005] Aiming at the above-mentioned existing technical deficiencies, the purpose of the present invention is to provide a drilling device for cutting blades that can reduce friction and facilitate the disassembly of the drill bit.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a drilling device for cutting blades, including a drilling assembly and a workbench for placing cutting products. A fixing member for fixing the cutting products is installed on the workbench. The drilling assembly includes: A drill bit and a retainer. The drill bit is installed on the retainer. A fixing pin is provided at one end of the retainer away from the drill bit. A conical head is provided at the end of the fixing pin. The conical head is a cylindrical shape with an inner concave in the middle. A rotating column, which is rotatably installed inside the tool holder. An installation hole for installing the fixing pin is provided at the end of the rotating column. A preloading chamber is also provided inside the rotating column. A plurality of jaws are rotatably installed inside the preloading chamber. A curved surface adapted to the conical head is provided on the inner side of the jaws. A locking ring, which is sleeved outside the plurality of jaws. When the locking ring moves in a specific direction, the locking ring drives the jaws to rotate inward and fixes the fixing pin in the installation hole. Among them, a pushing component is slidably installed inside the preloading chamber through an elastic body. When the locking ring is separated from the jaws, the pushing component can apply an outward thrust to the fixing pin through a second elastic body.

[0007] Preferably, the pushing component includes a sliding rod and a push rod. The sliding rod is slidably installed inside the rotating column through a second elastic body. The push rod is fixed to the end of the sliding rod, and the end of the push rod away from the sliding rod is movably connected to the end of the fixing pin.

[0008] Preferably, a circular protrusion is provided in the middle of the push rod, and an inclined surface is provided on the inner side of the claw. When the circular protrusion slides towards the fixing pin, the circular protrusion can exert an outward thrust on the claw.

[0009] Preferably, the locking ring is slidably installed in the pre-tightening chamber. One side of the locking ring is connected to the end of the pre-tightening chamber through a first elastic body. A convex plate is connected to the outer side of the locking ring, and the convex plate extends to the outside of the rotating column.

[0010] Preferably, the outer side surface of the claw is an inclined surface, and the end of the inclined surface facing the bottom is outwardly expanding. The inner ring surface of the locking ring is a conical surface adapted to the inclined surface.

[0011] Preferably, an annular groove is provided inside the tool holder. The annular groove is adapted to a plurality of convex plates. A driving ring is slidably installed inside the annular groove. The driving ring is connected to the inside of the annular groove through an oil cylinder, and the driving ring is movably connected to the convex plate.

[0012] Preferably, a conical connection is provided at the connection between the installation hole and the fixing pin. A clamping groove is provided at the orifice of the installation hole, and a clamping block adapted to the clamping groove is provided on the fixator.

[0013] Preferably, a driving gear sleeve is fixed to the outside of the rotating column, and a driving gear is rotatably installed inside the tool holder. The driving gear is meshed with the driving gear sleeve.

[0014] Preferably, the number of claws is multiple, and the multiple claws are circumferentially arranged inside the pre-tightening chamber.

[0015] The beneficial effects of the present invention are as follows: The present invention realizes the stable fixation of the fixator by the close cooperation between the conical head and the claw and the pressing action of the locking ring, effectively preventing loosening caused by vibration or high-speed rotation during the drilling process, and ensuring the drilling accuracy.

[0016] Through the design of the pushing component, when the fixator needs to be disassembled, only the clamping force of the claw needs to be released, and the second elastic body can push the fixing pin to move outward, and the operator can easily hold the fixator for disassembly, greatly simplifying the operation steps and improving the work efficiency.

[0017] The connection design between the clamping block and the clamping groove effectively prevents the self-rotation phenomenon of the fixator when the rotating column rotates, ensures the axial positioning accuracy of the drill bit, and improves the drilling accuracy and quality. Brief Description of the Drawings

[0018] Figure 1 It is a state diagram of the locking and fixing pin of the internal chuck of the drilling device.

[0019] Figure 2 It is a state diagram of the releasing and fixing pin of the internal chuck of the drilling device.

[0020] Figure 3 It is a schematic diagram of the rotating column.

[0021] Figure 4 It is an internal view of the rotating column of the present invention.

[0022] Figure 5 It is a schematic diagram of the drilling device.

[0023] In the figure: 1, tool holder; 2, rotating column; 3, drill bit; 4, oil cylinder; 5, push rod; 6, locking ring; 7, driving ring; 8, through groove; 9, fixture; 10, chuck; 11, first elastic body; 12, sliding rod; 13, second elastic body; 14, workbench; 15, driving gear; 16, driving gear sleeve; 17, fixing pin; 18, pre-tightening chamber; 19, convex plate; 20, annular groove. Detailed Description of the Invention

[0024] The following uses specific embodiments to illustrate the present invention, but it does not limit the invention.

[0025] Embodiment 1 As Figures 1 - 5 shown, in this embodiment, a drilling device for cutting blades is provided, including a drilling assembly and a workbench 14 for placing cutting products. A fixing member for fixing the cutting products is installed on the workbench 14. The fixing member can be components such as bolts. The fixing member is a commonly used component in the prior art. Therefore, the installation method of the cutting products is not specifically explained in the present invention. The drilling assembly includes a drill bit 3, a fixture 9, a rotating column 2, and a locking ring 6.

[0026] The drill bit 3 is installed on the holder 9. The holder 9 has a high degree of flexibility and can adapt to and install various different models of drill bits 3. This means that the drill bit 3, as a detachable and replaceable component, its connection method with the holder 9 follows the standardized connection scheme widely used in the field of machining. Given that this connection method is already very common in the industry, the present invention does not describe it in detail here. One end of the holder 9 away from the drill bit 3 is provided with a fixing pin 17. The end of the fixing pin 17 is provided with a tapered head, and the tapered head is a cylindrical shape with a concave middle. The fixing pin 17 serves as a component connecting the holder 9 and the drill bit 3 in the device. When the holder 9 is firmly fixed, the drill bit 3 is also firmly fixed. At this time, if the holder 9 is driven to rotate, the drill bit 3 will rotate synchronously. The tapered head design at the end of the fixing pin 17 plays a role in enhancing the stability of the holder 9. It ensures that the holder 9 can be effectively fixed through cooperation with the corresponding components. In short, the fixing pin 17 not only connects the holder 9 and the drill bit 3, but also enhances the overall fixing effect through its tapered head design.

[0027] The rotating column 2 is rotatably installed inside the tool holder 1. The tool holder 1 is a basic component on the drilling machine and can move horizontally and vertically above the workbench 14. The moving method of the tool holder 1 is prior art, so the present invention does not make a specific explanation. An actuating gear sleeve 16 is fixed to the outside of the rotating column 2. A driving gear 15 is rotatably installed inside the tool holder 1. The driving gear 15 is meshed and connected with the actuating gear sleeve 16. When the driving gear 15 rotates, it can drive the rotating column 2 to rotate inside the tool holder 1 through the actuating gear sleeve 16. An installation hole for installing the fixing pin 17 is provided at the end of the rotating column 2. An opening is provided on the installation hole so that the fixing pin 17 can be smoothly inserted into the installation hole from this opening. A pre-tightening chamber 18 is also provided inside the rotating column 2. A plurality of pawls 10 are rotatably installed inside the pre-tightening chamber 18. The inner side of the pawl 10 is provided with a curved surface adapted to the tapered head. When the curved surface on the pawl 10 closely fits the conical surface of the tapered head, a strong clamping force will be generated to firmly lock the tapered head in the installation hole, ensuring that the fixing pin 17 cannot slip out of the installation hole. In this way, the holder 9 is firmly fixed. During the rotation of the rotating column 2, since the holder 9 and the rotating column 2 are closely connected by the fixing pin 17, the rotation of the rotating column 2 can smoothly drive the holder 9 and the drill bit 3 installed on the holder 9 to rotate together.

[0028] The locking ring 6 is sleeved outside a plurality of jaws 10. When the locking ring 6 moves in a specific direction, the locking ring 6 drives the jaws 10 to rotate inward and fixes the fixing pin 17 in the mounting hole. The locking ring 6 is designed to be connectable to the rotating column 2 and has the ability to freely rotate with the rotating column 2. When the locking ring 6 is sleeved outside a plurality of jaws 10, it can effectively lock the plurality of jaws 10 simultaneously, enabling the jaws 10 to apply a necessary clamping force to the fixing pin 17, thereby ensuring that the fixing pin 17 is firmly fixed. At the same time, the locking ring 6 also generates a pressing force on the jaws 10, further enhancing the overall stability. The number of jaws 10 is multiple, and the multiple jaws 10 are circumferentially arranged inside the pre-tightening chamber 18. The synchronous pressing of the multiple circumferentially arranged jaws 10 can achieve a better locking effect. A tapered surface connection is provided at the connection between the mounting hole and the fixing pin 17, and a clamping groove is provided at the orifice of the mounting hole. A clamping block adapted to the clamping groove is provided on the fixture 9. The tapered surface connection can more accurately determine the axis of the fixing pin 17, thereby achieving higher accuracy in the axial positioning of the drill bit 3. At the same time, the connection design of the clamping block and the clamping groove ensures that when the rotating column 2 drives the fixture 9 to rotate, the fixture 9 can be effectively prevented from rotating relative to the rotating column 2.

[0029] Wherein, a pushing component is slidably installed inside the pre-tightening chamber 18 through an elastic body. When the locking ring 6 is separated from the jaws 10, the pushing component can apply an outward thrust to the fixing pin 17 through the second elastic body 13. The elastic force provided by the elastic body serves as the driving force for the fixing pin 17, and can effectively offset the adsorption effect generated due to the large locking force between the jaws 10 and the fixing pin 17. This adsorption effect may cause the fixture 9 to be difficult to remove. Through the action of this driving force, the problem that the fixture 9 is difficult to disassemble due to excessive adsorption force can be avoided, ensuring the convenience and efficiency of the operation.

[0030] Embodiment 2 As Figures 1 - 5 shown, on the basis of Embodiment 1, this embodiment provides the structure of the pushing component, which is specifically as follows: The pushing component includes a sliding rod 12 and a pushing rod 5. The sliding rod 12 is slidably installed inside the rotating column 2 through the second elastic body 13. The pushing rod 5 is fixed to the end of the sliding rod 12. One end of the pushing rod 5 away from the sliding rod 12 is movably connected to the end of the fixing pin 17. Under the driving force of the second elastic body 13, the sliding rod 12 and the pushing rod 5 can achieve synchronous displacement. When a thrust acts on the end of the fixing pin 17 and at this time the jaws 10 have stopped applying a clamping force to the fixing pin 17, this thrust is sufficient to push the fixture 9 out of the mounting hole. At this time, the operator only needs to simply hold the fixture 9 to easily complete the disassembly work.

[0031] A circular protrusion is provided in the middle of the push rod 5, and an inclined surface is provided on the inner side of the claw 10. When the circular protrusion slides in the direction of the fixed pin 17, the circular protrusion can exert an outward thrust on the claw 10. The inclined surface on the claw 10 is a surface with the bottom contracting inward. While the push rod 5 exerts a downward thrust on the fixed pin 17, the circular protrusion will also exert an outward force on the multiple claws 10, making it easier for the claws 10 to open outward and making it easier for the claws 10 to separate from the fixed pin 17.

[0032] Embodiment III As Figures 1 - 5 shown, on the basis of Embodiment I and Embodiment II, this embodiment provides the locking effect of the claw 10, which is specifically as follows: The locking ring 6 is slidably installed in the pre-tightening chamber 18. One side of the locking ring 6 is connected to the end of the pre-tightening chamber 18 through the first elastic body 11. A convex plate 19 is connected to the outer side of the locking ring 6, and the convex plate 19 extends to the outside of the rotating column 2. A through groove 8 is opened on the rotating column 2, and the through groove 8 communicates with the pre-tightening chamber 18. Under the thrust of the first elastic body 11, the locking ring 6 has a clamping force to lock the multiple claws 10 simultaneously. The number of the first elastic bodies 11 can be multiple, and the multiple first elastic bodies 11 are evenly distributed circumferentially inside the pre-tightening chamber 18 and can exert a stable thrust on the locking ring 6. The convex plate 19 extends to the outside of the rotating column 2, and a driving device for the convex plate 19 can be arranged outside the rotating column 2, avoiding arranging the driving device inside the rotating column 2 and being able to avoid arranging the driving device inside the rotating column 2 rotating at high speed.

[0033] The outer side surface of the claw 10 is an inclined surface, and the end of the inclined surface facing the bottom is outwardly expanding. The inner ring surface of the locking ring 6 is a conical surface adapted to the inclined surface. When the locking ring 6 slides upward, the acting force on the claw 10 can be stopped, and the claw 10 can stop acting on the fixed pin 17.

[0034] An annular groove 20 is provided inside the tool holder 1, and the annular groove 20 is adapted to the multiple convex plates 19. A driving ring 7 is slidably installed inside the annular groove 20. The driving ring 7 is connected inside the annular groove 20 through the oil cylinder 4. The driving ring 7 is movably connected to the convex plate 19. To ensure that the rotating column 2 rotates smoothly during the rotation process, the convex plate 19 is designed not to contact the side wall of the annular groove 20, thereby avoiding the resistance or additional friction brought by other components and making the rotation operation of the rotating column 2 more convenient. In addition, under normal working conditions, the driving ring 7 also does not contact the convex plate 19. However, when it is necessary to stop the rotating column 2 and disassemble the fixture 9 and the drill bit 3, the oil cylinder 4 will drive the driving ring 7 to move. Subsequently, the driving ring 7 pushes the locking ring 6 to move through the convex plate 19, and the locking ring 6 will release the acting force on the claw 10 during the sliding process.

[0035] Working principle: Fix the cutting product to be drilled on the workbench 14, select a suitable drill bit 3 and install it on the holder 9. The holder 9 is connected to the turret 2 through the fixing pin 17. The tapered head of the fixing pin 17 fits tightly with the curved surface of the jaw 10, and the locking ring 6 further presses the jaw 10 to ensure the stable fixation of the holder 9.

[0036] Start the drilling machine. The tool holder 1 moves to the corresponding position according to the preset drilling position. The driving gear 15 drives the turret 2 to rotate through the driving gear sleeve 16. Since the holder 9 is tightly connected to the turret 2 through the fixing pin 17, the rotation of the turret 2 will smoothly drive the holder 9 and the drill bit 3 to rotate together, realizing the drilling operation on the cutting product.

[0037] When it is necessary to disassemble the holder 9 or replace the drill bit 3, first drive the driving ring 7 to move through the oil cylinder 4. The driving ring 7 pushes the locking ring 6 to slide through the convex plate 19, releasing the force applied to the jaw 10. At this time, the jaw 10 no longer applies a clamping force to the fixing pin 17, and the second elastic body 13 pushes the slide bar 12 and the push rod 5 in the pushing-out assembly to move synchronously, applying an outward thrust to the fixing pin 17 to push the holder 9 out of the mounting hole. The operator only needs to hold the holder 9 to easily complete the disassembly work, and then the drill bit 3 can be replaced or the holder 9 can be reinstalled.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or equivalently replaced. Any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims

1. A drilling device for a cutting blade, comprising a drilling assembly and a workbench (14) for placing a cutting product, wherein a fixing member for fixing the cutting product is installed on the workbench (14), and it is characterized in that, The described drilling assembly includes: A drill bit (3) and a holder (9), the drill bit (3) is installed on the holder (9), a fixing pin (17) is provided at one end of the holder (9) away from the drill bit (3), and a tapered head is provided at the end of the fixing pin (17), and the tapered head is a cylindrical shape with a concave middle part; A rotating column (2), the rotating column (2) is rotatably installed inside the tool holder (1), an installation hole for installing the fixing pin (17) is provided at the end of the rotating column (2), and a pre-tightening chamber (18) is further provided inside the rotating column (2), and a plurality of claw jaws (10) are rotatably installed inside the pre-tightening chamber (18), and a curved surface adapted to the tapered head is provided on the inner side of the claw jaws (10); A locking ring (6), the locking ring (6) is sleeved outside the plurality of claw jaws (10), when the locking ring (6) moves in a specific direction, the locking ring (6) drives the claw jaws (10) to rotate inwards and fixes the fixing pin (17) in the installation hole; Wherein, a pushing-out assembly is slidably installed inside the pre-tightening chamber (18) through an elastic body, and when the locking ring (6) is separated from the claw jaws (10), the pushing-out assembly can apply an outward thrust to the fixing pin (17) through the second elastic body (13).

2. The drilling device for a cutting blade according to claim 1, wherein The pushing-out assembly includes a sliding rod (12) and a pushing rod (5), the sliding rod (12) is slidably installed inside the rotating column (2) through the second elastic body (13), the pushing rod (5) is fixed at the end of the sliding rod (12), and one end of the pushing rod (5) away from the sliding rod (12) is movably connected to the end of the fixing pin (17).

3. A drilling device for a cutting blade according to claim 2, characterized in that, A circular protrusion is provided in the middle of the pushing rod (5), and an inclined surface is provided on the inner side of the claw jaws (10). When the circular protrusion slides towards the fixing pin (17), the circular protrusion can apply an outward thrust to the claw jaws (10).

4. A drilling device for a cutting blade according to claim 1, characterized in that, The locking ring (6) is slidably installed in the pre-tightening chamber (18), one side of the locking ring (6) is connected to the end of the pre-tightening chamber (18) through a first elastic body (11), and a convex plate (19) is connected to the outside of the locking ring (6), and the convex plate (19) extends to the outside of the rotating column (2).

5. A drilling device for a cutting blade according to claim 4, characterized in that, The outer side surface of the claw jaws (10) is an inclined surface, and the end of the inclined surface facing the bottom is outwardly expanded, and the inner ring surface of the locking ring (6) is a conical surface adapted to the inclined surface.

6. A drilling device for a cutting blade according to claim 4, characterized in that, An annular groove (20) is provided inside the tool holder (1), the annular groove (20) is adapted to the plurality of convex plates (19), a driving ring (7) is slidably installed inside the annular groove (20), the driving ring (7) is connected inside the annular groove (20) through an oil cylinder (4), and the driving ring (7) is movably connected to the convex plate (19).

7. A drilling device for a cutting blade according to claim 1, characterized in that, A conical surface connection is provided at the connection between the installation hole and the fixing pin (17), a clamping groove is provided at the orifice of the installation hole, and a clamping block adapted to the clamping groove is provided on the holder (9).

8. A drilling device for a cutting blade according to claim 1, characterized in that, A driving gear sleeve (16) is fixed outside the rotating column (2), a driving gear (15) is rotatably installed inside the tool holder (1), and the driving gear (15) is meshed and connected with the driving gear sleeve (16).

9. A drilling device for a cutting blade according to claim 1, characterized in that, The number of the jaws (10) is multiple, and the multiple jaws (10) are circumferentially arranged inside the pre-tightening chamber (18).

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