Multi-size drilling device

Abstract

The invention relates to the technical field of drilling machining, and discloses a multi-size drilling device which comprises an operation frame and a driving assembly installed on the top of the operation frame in a matched mode. The drill bit is matched with the driving assembly to conduct drilling operation and is arranged under the driving assembly; the drill floor is fixedly connected to the outer surface of the operation frame and is matched with the drill bit for use; the driving assembly comprises a servo motor installed on the top of the operation frame in a matched mode and a first tape reel fixedly connected to the output end of the servo motor through a coupler. Through cooperation of all parts in the dismounting and mounting mechanism, connection looseness caused by high-frequency vibration generated by equipment operation of the inner threaded sleeve and the outer threaded sleeve can be prevented, after the drill bit is replaced, the drill bit can be automatically locked under the condition that manual tightening operation is not needed, and the dismounting and mounting efficiency is improved. The effects that the downtime for replacing the drill bit is shortened and the production efficiency is improved are achieved while it is guaranteed that the drill bit keeps the accurate position and posture during high-speed rotating drilling.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling processing, and particularly relates to a multi-size drilling device. Background Art

[0002] In industrial production and manufacturing, different products or components may require holes of different sizes to meet their specific design and functional requirements. A multi-size drilling device can quickly adapt to the processing requirements of various-sized holes by replacing the drill bit, without the need to separately equip dedicated drilling equipment for each size of hole, thereby improving the processing flexibility and production efficiency.

[0003] Most of the existing multi-size drilling devices usually use threaded connections to clamp and fix the drill bit. During actual operation, the high-frequency vibration generated by the equipment may cause periodic impact forces between the thread pairs, resulting in relative displacement. Over time, the original friction and pre-tightening force between the threads are gradually weakened, causing the connection to loosen. Continuing to operate in this working environment will greatly affect the fixed state of the drill bit, not only may it be difficult to ensure the drilling accuracy and quality, but also may cause the drill bit to fall off, posing a great safety hazard to production operations. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned existing multi-size drilling devices, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a multi-size drilling device.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: including, A drilling device body, including an operation frame and a driving component adaptively installed on the top of the operation frame; A drill bit for performing drilling operations in cooperation with the driving component, which is arranged directly below the driving component; And a drill table fixedly connected to the outer surface of the operation frame and used in cooperation with the drill bit; The driving component includes a servo motor adaptively installed on the top of the operation frame, a first belt pulley fixedly connected to the output end of the servo motor through a coupling, a synchronous belt sleeved on the outer surface of the first belt pulley, a second belt pulley sleeved on the inner surface of the other end of the synchronous belt, and a connecting rod fixedly installed on the outer end face of the second belt pulley; A disassembly and assembly mechanism, including a clamping component for fixing the connecting rod and the drill bit, which is arranged on the outer end face of the drill bit; And a locking component for preventing the clamping component from loosening due to high-frequency vibration during use, resulting in the detachment of the drill bit, which is arranged outside the clamping component; The clamping assembly includes an internally threaded sleeve fixedly connected to the outer end face of the connecting rod, a plurality of elastic clamping blocks fixedly installed on the inner wall of the internally threaded sleeve and used in cooperation with the drill bit, and an externally threaded sleeve threadedly connected to the inner surface of the internally threaded sleeve.

[0007] As a preferred solution of the multi-size drilling device of the present invention, wherein: the clamping assembly further includes a force-receiving end fixedly connected to the outer end face of the elastic clamping block, and a pressing port opened on the inner wall of the externally threaded sleeve and used in cooperation with the force-receiving end.

[0008] As a preferred solution of the multi-size drilling device of the present invention, wherein: the locking assembly includes a fixed frame fixedly sleeved on the outer surface of the internally threaded sleeve, a plurality of limiting grooves opened on the outer end face of the fixed frame, a spring fixedly installed on the inner wall of the limiting groove, a pawl fixedly connected to the other end of the spring, a fixed disk fixedly sleeved on the outer surface of the externally threaded sleeve, and a ratchet fixedly connected to the outer end face of the fixed disk and used in cooperation with the pawl.

[0009] As a preferred solution of the multi-size drilling device of the present invention, wherein: the elastic clamping blocks are used to clamp the drill bit and are arranged in a circumferential array on the inner wall of the internally threaded sleeve; When the externally threaded sleeve axially moves along the inner surface of the internally threaded sleeve, it can drive the pressing port to squeeze the force-receiving end, so that the plurality of elastic clamping blocks contract to clamp the drill bit.

[0010] As a preferred solution of the multi-size drilling device of the present invention, wherein: the inner wall of the limiting groove is in sliding contact with the outer surface of the pawl, and its end face can be engaged with the ratchet.

[0011] As a preferred solution of the multi-size drilling device of the present invention, wherein: the disassembly and assembly mechanism further includes a reset assembly for automatically controlling the clamping assembly and the locking assembly to lock the drill bit, which is arranged outside the fixed frame; And an unlocking assembly for controlling the pawl to move to a position disengaged from the ratchet, so that the externally threaded sleeve can axially move in the reverse direction, which is arranged directly above the fixed frame.

[0012] As a preferred solution of the multi-size drilling device of the present invention, wherein: the reset assembly includes a support block fixedly connected to the outer surface of the fixed frame, a rotating shaft rotatably connected to the inner surface of the support block, a long gear fixedly installed on the outer end face of the rotating shaft, a flat gear fixedly sleeved on the outer surface of the fixed disk and meshed with the long gear, and a torsion spring sleeved on the outer surface of the support block.

[0013] As a preferred embodiment of the multi-size drilling device of the present invention, the following is provided: A bearing sleeve for cooperative rotation is installed at the connection between the support block and the rotating shaft. The end face of the torsion spring is fixedly connected to the outer surface of the support block, and the other end of the torsion spring is fixedly connected to the outer surface of the rotating shaft.

[0014] As a preferred embodiment of the multi-size drilling device of the present invention, the following is provided: The unlocking assembly includes a force-applying ring disposed above the fixed frame, and a plurality of connecting columns fixedly connected to the bottom of the force-applying ring and configured to drive the pawl to move in cooperation.

[0015] As a preferred embodiment of the multi-size drilling device of the present invention, the following is provided: The number of the connecting columns corresponds to that of the pawls, and the outer surface of the connecting column is in sliding contact with the inner surface of the fixed frame.

[0016] Advantages of the present invention: Through the cooperation of the components in the disassembly and assembly mechanism, not only can the connection between the internal thread sleeve and the external thread sleeve be prevented from loosening due to the high-frequency vibration generated during the operation of the equipment, but also after replacing the drill bit, it can be automatically locked without manual tightening operation, so as to ensure that the drill bit maintains an accurate position and posture during high-speed rotary drilling, while reducing the downtime for replacing the drill bit and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them: Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 For the present invention Figure 1 It is a schematic diagram of the enlarged structure of part A in the present invention.

[0019] Figure 3 It is a schematic diagram of the overall structure of the disassembly and assembly mechanism in the present invention.

[0020] Figure 4 It is a schematic diagram of the internal structure of the internal thread sleeve in the present invention.

[0021] Figure 5 It is a schematic diagram of the connection structure between the internal thread sleeve and the external thread sleeve in the present invention.

[0022] Figure 6 It is a schematic diagram of the overall structure of the external thread sleeve in the present invention.

[0023] Figure 7This is a schematic diagram of the internal structure of the fixed frame in the present invention.

[0024] In the figure: 100, the drilling device body; 101, the operating frame; 102, the driving component; 102a, the servo motor; 102b, the first belt pulley; 102c, the synchronous belt; 102d, the second belt pulley; 102e, the connecting rod; 103, the drill bit; 104, the drill table; 200, the disassembly and assembly mechanism; 201, the clamping component; 201a, the internal thread sleeve; 201b, the elastic clamping block; 201c, the external thread sleeve; 201d, the stress end; 201e, the pressure application port; 202, the locking component; 202a, the fixed frame; 202b, the limiting groove; 202c, the spring; 202d, the pawl; 202e, the fixed disk; 202f, the ratchet; 203, the reset component; 203a, the support block; 203b, the rotating shaft; 203c, the long gear; 203d, the flat gear; 203e, the torsion spring; 204, the unlocking component; 204a, the force application ring; 204b, the connecting column. Detailed implementation manners

[0025] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings of the specification.

[0026] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0027] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that mutually excludes other embodiments.

[0028] Furthermore, the present invention is described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structures will be enlarged locally not in accordance with the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included. Embodiment

[0029] Refer to Figures 1 to 7 , which is the first embodiment of the present invention, and provides a multi-size drilling device. This device includes The drilling device body 100 includes an operating frame 101 and a driving component 102 adaptively installed on the top of the operating frame 101; The drill bit 103 that cooperates with the driving component 102 for drilling operations is disposed directly below the driving component 102; and the drill table 104 fixedly connected to the outer surface of the operating frame 101 and used in cooperation with the drill bit 103; It should be noted that the operating frame 101 is the basic support structure of the drilling device body 100, which is used to provide an installation position and stable support for other components, ensuring the stability of the device during operation. The driving component 102 is used to provide power for the rotation of the drill bit 103 and is the power source for drilling operations. The drill bit 103 directly acts on the surface of the workpiece and drills holes of various sizes in different materials through high-speed rotation. The drill table 104 is used to place the workpiece to be processed and provides a stable working platform for drilling operations.

[0030] The driving component 102 includes a servo motor 102a adaptively installed on the top of the operating frame 101, a first belt pulley 102b fixedly connected to the output end of the servo motor 102a through a coupling, a synchronous belt 102c sleeved on the outer surface of the first belt pulley 102b, a second belt pulley 102d sleeved on the inner surface of the other end of the synchronous belt 102c, and a connecting rod 102e fixedly installed on the outer end face of the second belt pulley 102d; It should be noted that the servo motor 102a is used to convert electrical energy into mechanical energy and provide initial power through the rotation of the output shaft. The first belt pulley 102b rotates together with the output shaft of the servo motor 102a and drives the second belt pulley 102d and the connecting rod 102e to rotate synchronously through cooperation with the synchronous belt 102c. Then, the connecting rod 102e transmits the rotational power to the drill bit 103.

[0031] The disassembly and assembly mechanism 200 includes a clamping component 201 for fixing the connecting rod 102e and the drill bit 103, which is disposed on the outer end face of the drill bit 103; and a locking component 202 for preventing the clamping component 201 from loosening due to high-frequency vibration during use, resulting in the detachment of the drill bit 103, which is disposed outside the clamping component 201; The clamping component 201 includes an internal thread sleeve 201a fixedly connected to the outer end face of the connecting rod 102e, a plurality of elastic clamping blocks 201b fixedly installed on the inner wall of the internal thread sleeve 201a and used in cooperation with the drill bit 103, and an external thread sleeve 201c threadedly connected to the inner surface of the internal thread sleeve 201a.

[0032] More specifically, the internal thread sleeve 201a is used to provide an installation position and support for other components of the clamping assembly 201. The elastic clamping block 201b is used to directly clamp the drill bit 103. When the elastic clamping block 201b is subjected to an external force, it will contract and generate elastic deformation, thereby clamping and fixing the drill bit 103. After the external force is removed, the external thread sleeve 201c restores itself through its own elastic force to release the fixation of the drill bit 103.

[0033] Specifically, the clamping assembly 201 further includes a force receiving end 201d fixedly connected to the outer end face of the elastic clamping block 201b, and a pressing port 201e opened on the inner wall of the external thread sleeve 201c and used in cooperation with the force receiving end 201d.

[0034] Wherein, the surfaces of the pressing port 201e and the force receiving end 201d corresponding to each other are both inclined surfaces. By axially moving along the inner surface of the internal thread sleeve 201a, the external thread sleeve 201c can drive the pressing port 201e to squeeze the force receiving end 201d, thereby controlling the contraction of the elastic clamping block 201b. When the force receiving end 201d is squeezed by the pressing port 201e, the elastic clamping block 201b will contract, thereby clamping the drill bit 103.

[0035] Furthermore, the locking assembly 202 includes a fixed frame 202a fixedly sleeved on the outer surface of the internal thread sleeve 201a, a plurality of limiting grooves 202b opened on the outer end face of the fixed frame 202a, a spring 202c fixedly installed on the inner wall of the limiting groove 202b, a pawl 202d fixedly connected to the other end of the spring 202c, a fixed disk 202e fixedly sleeved on the outer surface of the external thread sleeve 201c, and a ratchet wheel 202f fixedly connected to the outer end face of the fixed disk 202e and used in cooperation with the pawl 202d.

[0036] It should be explained that the fixed frame 202a is the basic structure of the locking assembly 202. The limiting groove 202b is used to provide an installation space and movement guidance for the spring 202c and the pawl 202d. The spring 202c is used to provide an elastic restoring force for the pawl 202d, so that when the pawl 202d contacts the ratchet wheel 202f, it can maintain a meshing tendency. When the fixed disk 202e rotates, it can drive the external thread sleeve 201c to rotate into the internal thread sleeve 201a, and at the same time, it can also drive the ratchet wheel 202f to gradually rotate to the position where it contacts the pawl 202d. The ratchet wheel 202f squeezes the pawl 202d into the limiting groove 202b for a certain distance, and then the pawl 202d is reset by the reaction force of the spring 202c. It is fixedly connected to the outer end face of the fixed disk 202e and cooperates with the pawl 202d to keep the pawl 202d meshed with the ratchet wheel 202f. Through the cooperation of the two, it can prevent the connection between the internal thread sleeve 201a and the external thread sleeve 201c from loosening due to the high-frequency vibration generated by the operation of the equipment, so as to achieve the effect of preventing the drill bit 103 from falling off.

[0037] Among them, the elastic clamping blocks 201b are used to clamp the drill bit 103 and are circumferentially arrayed on the inner wall of the internal thread sleeve 201a; When the external thread sleeve 201c axially moves along the inner surface of the internal thread sleeve 201a, it can drive the pressure application port 201e to squeeze the force receiving end 201d, so that several elastic clamping blocks 201b contract to clamp the drill bit 103.

[0038] Preferably, the inner wall of the limit groove 202b is in sliding contact with the outer surface of the pawl 202d, and its end surface can engage with the ratchet wheel 202f.

[0039] During use, Select a drill bit 103 with a suitable size, place the workpiece to be processed on the drill table 104 and firmly fix and accurately position it. Then insert the drill bit 103 into the internal thread sleeve 201a so that it is located at the center position of the elastic clamping blocks 201b; Then control the rotation of the rotating fixed disk 202e to drive the external thread sleeve 201c to axially move along the inner surface of the internal thread sleeve 201a. The pressure application port 201e on the inner wall of the external thread sleeve 201c squeezes the force receiving end 201d of the outer end surface of the elastic clamping block 201b, so that the elastic clamping block 201b contracts and generates elastic deformation to clamp the drill bit 103; During this process: the ratchet wheel 202f rotates synchronously with the fixed disk 202e. When the ratchet wheel 202f rotates to the position where it contacts the pawl 202d, after squeezing the pawl 202d into the limit groove 202b for a certain distance, the pawl 202d is reset by the reaction force of the spring 202c and remains engaged with the ratchet wheel 202f, preventing the connection between the internal thread sleeve 201a and the external thread sleeve 201c from loosening due to the high-frequency vibration generated by the equipment operation and avoiding the detachment of the drill bit 103; After the drill bit 103 is installed: start the servo motor 102a to drive the first belt pulley 102b to rotate. Through the cooperation of the first belt pulley 102b and the synchronous belt 102c, the second belt pulley 102d and the connecting rod 102e rotate synchronously. Then the rotational power is transmitted to the drill bit 103 through the connecting rod 102e, so that the drill bit 103 rotates at a high speed to drill the workpiece.

[0040] In summary, through the cooperation of the clamping assembly 201 and the locking assembly 202, not only can the drill bit 103 be clamped and fixed, but also the connection between the internal thread sleeve 201a and the external thread sleeve 201c can be prevented from loosening due to the high-frequency vibration generated by the equipment operation, ensuring that the drill bit 103 maintains an accurate position and posture during high-speed rotary drilling, so as to achieve the effect of ensuring that the drilled hole has accurate dimensions, a smooth inner wall, and a position that meets the design requirements, and improving the product qualification rate. Embodiment

[0041] Refer to Figure 3, Figure 4 and Figure 7 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that this embodiment provides a reset assembly 203 for automatically locking the drill bit 103 after replacement, and an unlocking assembly 204 for releasing the limit on the external thread sleeve 201c.

[0042] It should be noted that the disassembly and assembly mechanism 200 further includes a reset assembly 203 for automatically controlling the clamping assembly 201 and the locking assembly 202 to lock the drill bit 103, which is provided on the outer side of the fixed frame 202a; And an unlocking assembly 204 for controlling the pawl 202d to move to a position disengaged from the ratchet wheel 202f, so that the external thread sleeve 201c can move axially in the reverse direction, which is provided directly above the fixed frame 202a.

[0043] Furthermore, the reset assembly 203 includes a support block 203a fixedly connected to the outer surface of the fixed frame 202a, a rotating shaft 203b rotatably connected to the inner surface of the support block 203a, a long gear 203c fixedly installed on the outer end face of the rotating shaft 203b, a flat gear 203d fixedly sleeved on the outer surface of the fixed disk 202e and meshing with the long gear 203c, and a torsion spring 203e sleeved on the outer surface of the support block 203a.

[0044] It should be explained that the support block 203a is used to provide support and installation position for the rotating shaft 203b. Rotating the rotating shaft 203b can drive the long gear 203c to rotate, and then the long gear 203c drives the flat gear 203d to rotate. While rotating, the flat gear 203d can also move axially along the surface of the long gear 203c with the external thread sleeve 201c, so as to drive the pressure port 201e on the inner wall of the external thread sleeve 201c to gradually move away from the force receiving end 201d, so that the elastic clamping block 201b is restored by its own elastic force to release the fixation of the drill bit. When rotating the rotating shaft 203b, the torsion spring 203e can also be compressed to store elastic potential energy. After replacing the drill bit 103 with an appropriate size and releasing the rotating shaft 203b, the reverse force of the torsion spring 203e can drive the rotating shaft 203b to rotate in the reverse direction to achieve the effect of resetting the external thread sleeve 201c to clamp the drill bit 103.

[0045] Furthermore, a bearing sleeve for cooperative rotation is installed at the connection between the support block 203a and the rotating shaft 203b. The end face of the torsion spring 203e is fixedly connected to the outer surface of the support block 203a, and the other end of the torsion spring 203e is fixedly connected to the outer surface of the rotating shaft 203b.

[0046] Specifically, the unlocking component 204 includes a force - applying ring 204a disposed above the fixed frame 202a, and a plurality of connecting columns 204b fixedly connected to the bottom of the force - applying ring 204a and cooperating to drive the pawl 202d to move.

[0047] More specifically, the force - applying ring 204a is used to apply an external force to the connecting column 204b, so that the connecting column 204b drives the pawl 202d to overcome the elastic force of the spring 202c and move to a position disengaged from the ratchet wheel 202f, thereby unlocking the limit on the external - thread sleeve 201c.

[0048] Preferably, the number of the connecting columns 204b corresponds to that of the pawls 202d, and the outer surface of the connecting column 204b is in sliding contact with the inner surface of the fixed frame 202a.

[0049] During use, If it is necessary to replace the drill bit 103: turn off the servo motor 102a, stop the rotation of the drill bit 103, remove the processed workpiece from the drill table 104, pull the force - applying ring 204a to apply an external force to the connecting column 204b, so that the connecting column 204b drives the pawl 202d to overcome the elastic force of the spring 202c and move to a position disengaged from the ratchet wheel 202f; Then, overcome the elastic force of the torsion spring 203e, rotate the support block 203a, drive the long gear 203c to rotate through the support block 203a, and then drive the flat gear 203d to rotate by the long gear 203c. While rotating, the flat gear 203d can also move axially along the surface of the long gear 203c with the external - thread sleeve 201c, so as to drive the pressure - applying port 201e on the inner wall of the external - thread sleeve 201c to gradually move to a position away from the force - receiving end 201d, enabling the elastic clamping block 201b to recover by its own elastic force to release the fixation of the drill bit, remove the old drill bit 103, and then insert a drill bit of an appropriate model back into the internal - thread sleeve 201a so that it is located at the center of the elastic clamping block 201b; Subsequently, release the support block 203a, and drive the installation process in Embodiment 1 to automatically proceed through the reaction force of the torsion spring 203e to complete the replacement of the drill bit 103.

[0050] In summary, through the cooperation of the reset component 203 and the unlocking component 204, after replacing the drill bit 103, it can be automatically locked without manual tightening operation, greatly shortening the installation time after replacing the drill bit 103, so as to achieve the effect of reducing the downtime and improving the production efficiency. Embodiment

[0051] Refer to Figures 1 to 7 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a usage method, including a multi - size drilling device, and its method includes the following steps: S1: According to the requirements such as the size and material of the holes to be drilled on the workpiece, select a suitable drill bit 103. Place the workpiece to be processed on the drill table 104 and firmly fix it using tools such as jigs. Through measurement, calibration and other methods, accurately position it to ensure that the drilling position meets the design standards; S2: Pull the force - applying ring 204a, drive the pawl 202d to disengage from the ratchet wheel 202f through the connecting column 204b, release the limit of the external - thread sleeve 201c, and then rotate the support block 203a to drive the long gear 203c and the flat gear 203d to rotate, causing the external - thread sleeve 201c to move, and the elastic clamping block 201b to expand by its own elastic force: S3: Insert a drill bit 103 of appropriate size into the internal - thread sleeve 201a, ensure that it is at the center of the elastic clamping block 201b, and then release the support block 203a. Drive the rotating shaft 203b to rotate in the reverse direction through the torsion spring 203e, cause the external - thread sleeve 201c to reset, drive the pressure - applying port 201e to squeeze the force - receiving end 201d, and make the elastic clamping block 201b contract to clamp the drill bit 103; S4: When the external - thread sleeve 201c rotates, the fixed disk 202e and the ratchet wheel 202f rotate accordingly. After the ratchet wheel 202f contacts the pawl 202d, it squeezes it into the limit groove 202b, and then resets it through the reaction force of the spring 202c, making the pawl 202d engage with the ratchet wheel 202f to prevent the connection between the internal - thread sleeve 201a and the external - thread sleeve 201c from loosening.

[0052] S5: Start the servo - motor 102a to drive the first belt pulley 102b to rotate. Through the cooperation of the first belt pulley 102b and the synchronous belt 102c, drive the second belt pulley 102d and the connecting rod 102e to rotate synchronously, and then transmit the power to the drill bit 103 through the connecting rod 102e, making it rotate at high speed to drill the workpiece to be processed.

[0053] S6: After completing all drilling tasks, turn off the servo - motor 102a, remove all the processed workpieces from the drill table 104, clean the debris on the surface of the equipment, check the wear of each component, and lubricate and maintain the key parts to prepare for the next use.

[0054] In summary, through the cooperation of the components in the disassembly and assembly mechanism 200, it can not only prevent the connection between the internal - thread sleeve 201a and the external - thread sleeve 201c from loosening due to the high - frequency vibration generated during the operation of the equipment, but also automatically lock the drill bit 103 without manual tightening operation after replacing the drill bit 103, so as to ensure that the drill bit 103 maintains an accurate position and posture during high - speed rotary drilling, reduce the downtime for replacing the drill bit 103, and improve the production efficiency.

[0055] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application (e.g., the dimensions, scales, structures, shapes and proportions of various elements, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of discrete elements may be altered or changed. Accordingly, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be altered or reordered according to alternative embodiments. In the claims, any clause of "means-plus-function" is intended to cover the structures that perform the recited function herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims. In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently contemplated best mode of carrying out the present invention, or those features that are not relevant to the implementation of the present invention).

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A multi-size drilling device, characterized in that: including, a drilling device body (100), comprising an operating frame (101) and a driving assembly (102) adaptively mounted on the top of the operating frame (101); a drill bit (103) cooperating with the driving assembly (102) for drilling operations, which is arranged directly below the driving assembly (102); and a drill table (104) fixedly connected to the outer surface of the operating frame (101) and cooperating with the drill bit (103); the driving assembly (102) includes a servo motor (102a) adaptively mounted on the top of the operating frame (101), a first belt pulley (102b) fixedly connected to the output end of the servo motor (102a) through a coupling, a synchronous belt (102c) sleeved on the outer surface of the first belt pulley (102b), a second belt pulley (102d) sleeved on the inner surface of the other end of the synchronous belt (102c), and a connecting rod (102e) fixedly installed on the outer end face of the second belt pulley (102d); a disassembly and assembly mechanism (200), comprising a clamping assembly (201) for fixing the connecting rod (102e) and the drill bit (103), which is arranged on the outer end face of the drill bit (103); and a locking assembly (202) for preventing the clamping assembly (201) from loosening due to high-frequency vibration during use, resulting in the detachment of the drill bit (103), which is arranged outside the clamping assembly (201); the clamping assembly (201) includes an internal thread sleeve (201a) fixedly connected to the outer end face of the connecting rod (102e), a plurality of elastic clamping blocks (201b) fixedly installed on the inner wall of the internal thread sleeve (201a) and cooperating with the drill bit (103), and an external thread sleeve (201c) threadedly connected to the inner surface of the internal thread sleeve (201a).

2. The multi-size drilling device according to claim 1, wherein: The clamping assembly (201) further includes a force-receiving end (201d) fixedly connected to the outer end face of the elastic clamping block (201b), and a pressure application port (201e) formed on the inner wall of the external thread sleeve (201c) and cooperating with the force-receiving end (201d).

3. The multi-size drilling device according to claim 2, wherein: The locking assembly (202) includes a fixed frame (202a) fixedly sleeved on the outer surface of the internal thread sleeve (201a), a plurality of limiting grooves (202b) formed on the outer end face of the fixed frame (202a), a spring (202c) fixedly installed on the inner wall of the limiting groove (202b), a pawl (202d) fixedly connected to the other end of the spring (202c), a fixed disk (202e) fixedly sleeved on the outer surface of the external thread sleeve (201c), and a ratchet wheel (202f) fixedly connected to the outer end face of the fixed disk (202e) and cooperating with the pawl (202d).

4. The multi-size drilling device according to claim 3, characterized in that: The elastic clamping block (201b) is used to clamp the drill bit (103) and is arranged in a circumferential array on the inner wall of the internal thread sleeve (201a); When the external thread sleeve (201c) axially moves along the inner surface of the internal thread sleeve (201a), it can drive the pressure application port (201e) to extrude the force receiving end (201d), so that a plurality of the elastic clamping blocks (201b) contract to clamp the drill bit (103).

5. The multi-size drilling device according to claim 4, wherein: The inner wall of the limiting groove (202b) is in sliding contact with the outer surface of the ratchet pawl (202d), and its end face can be engaged with the ratchet wheel (202f).

6. The multi-size drilling device according to claim 5, wherein: The disassembly and assembly mechanism (200) further includes a reset assembly (203) for automatically controlling the clamping assembly (201) and the locking assembly (202) to lock the drill bit (103), and the reset assembly is arranged outside the fixed frame (202a); and an unlocking assembly (204) for controlling the ratchet pawl (202d) to move to a position disengaged from the ratchet wheel (202f) so that the external thread sleeve (201c) can axially move in the reverse direction, and the unlocking assembly is arranged directly above the fixed frame (202a).

7. The multi-size drilling device according to claim 6, characterized in that: The reset assembly (203) includes a support block (203a) fixedly connected to the outer surface of the fixed frame (202a), a rotating shaft (203b) rotatably connected to the inner surface of the support block (203a), a long gear (203c) fixedly installed on the outer end face of the rotating shaft (203b), a flat gear (203d) fixedly sleeved on the outer surface of the fixed disk (202e) and meshed with the long gear (203c), and a torsion spring (203e) sleeved on the outer surface of the support block (203a).

8. The multi-size drilling device according to claim 7, characterized in that: A bearing sleeve for cooperative rotation is installed at the connection between the support block (203a) and the rotating shaft (203b). The end face of the torsion spring (203e) is fixedly connected to the outer surface of the support block (203a), and the other end of the torsion spring (203e) is fixedly connected to the outer surface of the rotating shaft (203b).

9. The multi-size drilling device according to claim 8, characterized in that: The unlocking assembly (204) includes a force application ring (204a) arranged above the fixed frame (202a), and a plurality of connecting columns (204b) fixedly connected to the bottom of the force application ring (204a) and cooperatively driving the ratchet pawl (202d) to move.

10. The multi-size drilling device according to claim 9, characterized in that: The number of the connecting columns (204b) corresponds to that of the ratchet pawls (202d), and the outer surface of the connecting column (204b) is in sliding contact with the inner surface of the fixed frame (202a).

Images