Hole making device

Abstract

The utility model provides a drilling device, which relates to the technical field of drilling and comprises a sleeve, a tool bit and a pushing component. The tool bit is provided with a through hole communicated with an inner cavity of the sleeve in the axial direction of the sleeve, the sleeve is provided with a first limiting groove and a second limiting groove, and part of the material pushing assembly is in sliding fit with the first limiting groove and the second limiting groove. On the basis, due to the fact that the second limiting groove communicates with the end, close to the tool bit, of the first limiting groove, in the process that the material pushing assembly slides to the second limiting groove from the first limiting groove, the material pushing assembly gradually stretches out of the through hole to push excess materials. Besides, due to the fact that the included angle exists between the extending direction of the second limiting groove and the extending direction of the first limiting groove, the pushing assembly is locked under the condition that the part of the pushing assembly is matched with the second limiting groove, and it is guaranteed that hard or sticky remaining materials can be discharged out of the drilling device. On the basis, according to the drilling device provided by the invention, blockage and abrasion are reduced, the drilling precision is improved, and the working life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of punching, in particular to a hole-making device. Background Art

[0002] In current manufacturing processes, particularly those involving drilling operations, ejector pins are widely used to remove the remaining material after the drilling operation. This conventional method typically involves a mechanically driven ejector pin assembly designed to penetrate the workpiece and push out the remaining material fragments after the hole is formed.

[0003] However, when encountering hard or sticky material, the ejector pin tends to automatically reset, leaving incompletely cleaned debris inside the drilling mechanism. This cumulative effect not only blocks the subsequent drilling path, affecting machining accuracy, but also increases unnecessary wear on the equipment. In severe cases, it can even cause damage to the drilling components or malfunction, shortening the service life of the entire equipment. Utility Model Content

[0004] The purpose of the present utility model includes providing a hole-making device, which can temporarily lock the ejector pin when it is extended, so as to improve the problem of debris remaining inside the hole-making device, thereby reducing the blockage and wear of the hole-making device and ensuring the drilling accuracy and service life of the hole-making device.

[0005] The embodiment of the present utility model can be implemented as follows:

[0006] In a first aspect, the utility model provides a hole-making device, comprising a sleeve, a cutter head, and a pusher assembly;

[0007] The cutter head is connected to the sleeve, and a through hole communicating with the inner cavity of the sleeve is opened along the axial direction of the sleeve;

[0008] The sleeve is provided with a first limiting groove and a second limiting groove, and the first limiting groove extends along the axial direction of the sleeve, the second limiting groove is connected to an end of the first limiting groove close to the cutter head, and an angle is formed between the extension direction of the second limiting groove and the extension direction of the first limiting groove;

[0009] The pusher assembly is located in the inner cavity of the sleeve and is partially slidably matched with the first limiting groove and the second limiting groove.

[0010] In an optional embodiment, one end of the second limiting groove is connected to the first limiting groove, and the other end extends along the circumference of the sleeve.

[0011] In an optional embodiment, the pusher assembly includes a pin and a shift rod, the pin is coaxially arranged with the sleeve and extends along the axial direction of the sleeve; the shift rod is connected to the pin and slidably engages with the first limiting groove and the second limiting groove.

[0012] In an optional embodiment, the ejector pin includes a connecting portion and a pushing portion that are connected to each other, the connecting portion is connected to the shifting rod, and the pushing portion extends along the axial direction of the sleeve.

[0013] In an optional embodiment, the pushing assembly further includes an elastic member, which is sleeved on the pushing portion, and has two ends respectively abutting against the connecting portion and the cutter head.

[0014] In an optional embodiment, the connecting portion is provided with a mounting groove, and the shifting rod is threadedly connected to the mounting groove.

[0015] In an optional embodiment, a circular protrusion is provided on one end of the shifting rod away from the ejector pin, and the maximum diameter of the circular protrusion is greater than the width of the first limiting groove and the second limiting groove.

[0016] In an optional embodiment, the hole-making device further comprises a handle connected to an end of the sleeve away from the cutter head.

[0017] In an optional embodiment, the handle includes a mounting portion and a gripping portion, the mounting portion is threadedly connected to the sleeve, and the gripping portion is connected to the mounting portion.

[0018] In an optional embodiment, the gripping portion is symmetrically arranged on the mounting portion with the axis of the sleeve as the symmetry line.

[0019] The beneficial effects of the hole-making device provided by the embodiment of the utility model include:

[0020] The utility model provides a hole-making device, comprising a sleeve, a cutter head and a pusher assembly. The cutter head is connected to the sleeve, and along the axial direction of the sleeve, the cutter head is provided with a through hole connected to the inner cavity of the sleeve, the sleeve is provided with a first limiting groove and a second limiting groove, and a part of the pusher assembly slides with the first limiting groove and the second limiting groove. On the basis of the above, since the second limiting groove is connected to the end of the first limiting groove close to the cutter head, in the process of the pusher assembly sliding from the first limiting groove to the second limiting groove, the pusher assembly gradually extends from the through hole to push the residual material. Moreover, since there is an angle between the extension direction of the second limiting groove and the extension direction of the first limiting groove, when the part cooperates with the second limiting groove, the pusher assembly is locked and remains in an extended state, thereby ensuring that harder or stickier residual materials can also be discharged from the hole-making device. Based on this, the hole-making device provided by the present application reduces blockage and wear, and improves punching accuracy and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of the hole-making device provided in this embodiment;

[0023] Figure 2 Another structural schematic diagram of the hole-making device provided in this embodiment;

[0024] Figure 3 A schematic diagram of the structure of the cutter head provided in this embodiment;

[0025] Figure 4 A schematic structural diagram of the sleeve provided in this embodiment;

[0026] Figure 5 A schematic diagram of the structure of the ejector pin provided in this embodiment;

[0027] Figure 6 A schematic structural diagram of the lever provided in this embodiment;

[0028] Figure 7 A schematic structural diagram of the elastic member provided in this embodiment;

[0029] Figure 8 This is a schematic structural diagram of the handle provided in this embodiment.

[0030] Icon: 10-hole making device; 100-sleeve; 110-first limiting groove; 130-second limiting groove; 200-handle; 210-mounting part; 230-gripping part; 300-cutter head; 310-through hole; 400-pushing assembly; 410-thimble; 411-connecting part; 412-mounting groove; 413-pushing part; 430-lever; 431-circular protrusion; 450-elastic part. DETAILED DESCRIPTION

[0031] The hole-making device in the related art generally uses an ejector structure to discharge the residual material left after the punching operation, which has the problem of incompletely cleaned debris remaining inside the hole-making device.

[0032] In response to the above problems, the present invention provides a hole-making device 10, which can temporarily lock the ejector pin 410 when it is extended, so as to improve the problem of debris remaining inside the hole-making device 10, thereby reducing the blockage and wear of the hole-making device 10 and ensuring the drilling accuracy and service life of the hole-making device 10.

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0036] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0037] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0038] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0039] The overall structure, working principle and technical effects of the hole-making device 10 provided by the present invention are described in detail below through embodiments and in conjunction with the accompanying drawings. Figure 1 This is a schematic structural diagram of the hole-making device 10 provided in this embodiment. Figure 2 For another structural diagram of the hole-making device 10 provided in this embodiment, please refer to Figure 1 and Figure 2 The present invention provides a hole-making device 10, which is applied in the field of hole-punching technology, and includes a sleeve 100, a cutter head 300 and a pusher assembly 400.

[0040] The cutter head 300 is connected to the sleeve 100 and has a through hole 310 formed along the axial direction of the sleeve 100, which communicates with the inner cavity of the sleeve 100. Furthermore, since the pusher assembly 400 is located in the inner cavity of the sleeve 100, when the sleeve 100 moves axially, the pusher assembly 400 can extend into or out of the through hole 310 to push out the remaining material after punching.

[0041] To facilitate the axial movement of the pusher assembly 400, the sleeve 100 is provided with a first limiting groove 110 and a second limiting groove 130, and a portion of the pusher assembly 400 slides in cooperation with the first limiting groove 110 and the second limiting groove 130. Therefore, based on the first limiting groove 110 extending along the axial direction of the sleeve 100, as the portion slides in cooperation with the first limiting groove 110, the pusher assembly 400 slides in the axial direction of the sleeve 100.

[0042] Based on the above, since the second limiting groove 130 is connected to the end of the first limiting groove 110 close to the cutter head 300, in the process of the pushing assembly 400 sliding from the first limiting groove 110 to the second limiting groove 130, the pushing assembly 400 gradually extends from the through hole 310 to push the residual material.

[0043] Moreover, since there is an angle between the extension direction of the second limiting groove 130 and the extension direction of the first limiting groove 110, when partially engaged with the second limiting groove 130, the pushing assembly 400 is locked and remains in an extended state, thereby ensuring that harder or stickier residual materials can also be discharged from the hole-making device 10 under the continuous action of the pushing assembly 400.

[0044] In addition, it should be noted that Figure 3 The illustrated cutter head 300 can be machined to the desired design and then quenched to achieve the desired hardness and specifications. Based on this design, when drilling holes in expanded polytetrafluoroethylene (EPF) material attached to equipment, the cutter head 300 can achieve the desired hole diameter while avoiding damage to the material being drilled and the equipment to which it is attached.

[0045] In some embodiments, such as Figure 4 As shown, one end of the second limiting groove 130 is connected to the first limiting groove 110, and the other end extends along the circumference of the sleeve 100. It is easy to understand that, on the one hand, the circumferentially extending second limiting groove 130 can ensure that the pusher assembly 400 is in the maximum extended position, ensuring the extended length; on the other hand, as the second limiting groove 130 extends circumferentially, the pusher assembly 400 can rotate to a certain extent while sliding, applying a certain tangential force to the excess material, thereby improving the pushing efficiency. In other embodiments, the second limiting groove 130 can also extend upward or downward to achieve a certain locking effect.

[0046] See also Figure 5 and Figure 6 Specifically, the pusher assembly 400 includes an ejector pin 410 and a lever 430. The ejector pin 410 is coaxially arranged with the sleeve 100 and extends axially of the sleeve 100, thereby being able to extend into and out of the through-hole 310. The lever 430 is connected to the ejector pin 410 and slidably engages with the first limiting groove 110 and the second limiting groove 130, thereby driving the ejector pin 410 to slide along the axial direction of the sleeve 100 and locking the ejector pin 410.

[0047] In other embodiments, the ejector pin 410 and the lever 430 may also be integrally formed to ensure that the pin 410 partially slides with the first limiting groove 110 and the second limiting groove 130, and the pin 430 partially slides along the axial direction of the sleeve 100 and extends out of the through hole 310. Furthermore, to prevent the lever 430 from affecting the ejector pin 410's pushing function, the ejector pin 410 includes a connecting portion 411 and a pushing portion 413 that are interconnected. The connecting portion 411 is connected to the lever 430, and the pushing portion 413 extends along the axial direction of the sleeve 100. In some embodiments, as in Figure 5 As shown, ejector pin 410 is arranged in a T-shaped structure. Furthermore, connecting portion 411 defines a mounting slot 412, and lever 430 is threadedly connected to mounting slot 412. It is understood that a threaded connection provides a stable connection. When external force is applied to lever 430, the irregularly shaped threads resist the force, preventing lever 430 and connecting portion 411 from loosening.

[0048] It is also very important to consider the reset performance of the hole making device 10. In order to ensure that the pusher assembly 400 can be accurately reset along the axial direction of the sleeve 100 when the external force is reduced or absent, please refer to Figure 7 The pusher assembly 400 further includes an elastic member 450, which is sleeved over the pusher portion 413, with its two ends respectively abutting against the connecting portion 411 and the cutter head 300. It is easy to understand that as the ejector pin 410 approaches and extends out of the through-hole 310, the elastic member 450 is compressed and deformed, accumulating energy. When the lever 430 slides from the second limiting groove 130 to the second limiting groove 130, and the ejector pin 410 is unlocked, the elastic reset member can act on the connecting portion 411, releasing energy, allowing the pusher assembly 400 to be precisely reset along the axial direction of the sleeve 100.

[0049] Furthermore, if Figure 6As shown, a circular protrusion 431 is provided on the end of the lever 430 away from the ejector pin 410. The maximum diameter of the circular protrusion 431 is greater than the width of the first and second limiting grooves 110, 130. This means that there is a significant size difference between the circular protrusion 431 and the grooves, effectively preventing the lever 430 from accidentally retracting completely into the first or second limiting grooves 110, 130 during operation. Furthermore, it should be noted that the circular protrusion 431 provides a larger contact area, making it easier for operators to apply force. Especially when high torque is required, the larger contact area can better distribute the force, making operation more labor-saving.

[0050] Accordingly, in order to improve the convenience of the operator when drilling, the hole making device 10 further includes a handle 200, which is connected to the end of the sleeve 100 away from the cutter head 300. Figure 8 As shown, the handle 200 includes a mounting portion 210 and a grip portion 230. The mounting portion 210 is threadedly connected to the sleeve 100 to facilitate assembly and disassembly of the handle 200; the grip portion 230 is connected to the mounting portion 210 to facilitate operator use. Furthermore, the grip portion 230 is symmetrically arranged on the mounting portion 210 with the axis of the sleeve 100 as the symmetry line, ensuring that the blade 300 applies even force during drilling.

[0051] It should also be noted that the grip portion 230 and the mounting portion 210 are integrally formed. Specifically, a mold can be made based on the specific structures of the grip portion 230 and the mounting portion 210, and the properly proportioned materials can be injected into the mold and cured. The cured handle 200 can then be drilled according to the drawings. Similarly, the sleeve 100, ejector pin 410, and lever 430 described above can also be designed in this manner.

[0052] Taking this embodiment as an example, the working principle and workflow of the hole-making device 10 are as follows:

[0053] When using the hole-making device 10 to make holes, the bottom of the cutter head 300 is aligned with the location where the hole is to be made in the material. The operator applies pressure through the grip 230, causing the relatively sharp cutter head 300 to penetrate the material. The penetrated waste material is stuck in the through hole 310 in the cutter head 300.

[0054] Afterwards, the staff pushes the lever 430 to slide along the first limiting groove 110, causing the ejector pin 410 to slide along the axial direction of the sleeve 100 and extend into the through hole 310 to push the remaining material. During this process, the elastic member 450 is compressed and deformed, accumulating energy.

[0055] Afterwards, the staff pushes the lever 430 to slide from the first limit groove 110 to the second limit groove 130, the lever 430 is locked, and the ejector pin 410 remains in the extreme position where it can be extended, continuously applying force to the harder or stickier residual material, thereby causing the residual material to detach and be discharged from the hole-making device 10.

[0056] After confirming that the remaining material has been drained, the staff member slides the lever 430 from the second limiting groove 130 to the first limiting groove 110. At this time, the deformed elastic member 450 releases the elastic force to restore the original shape, resetting the ejector pin 410 and the lever 430.

[0057] In summary, the present invention provides a hole-making device 10, comprising a sleeve 100, a cutter head 300, and a pusher assembly 400. The cutter head 300 is connected to the sleeve 100, and along the axial direction of the sleeve 100, the cutter head 300 is provided with a through hole 310 connected to the inner cavity of the sleeve 100, the sleeve 100 is provided with a first limiting groove 110 and a second limiting groove 130, and a part of the pusher assembly 400 is slidably matched with the first limiting groove 110 and the second limiting groove 130. On the basis of the above, since the second limiting groove 130 is connected to the end of the first limiting groove 110 close to the cutter head 300, in the process of the pusher assembly 400 sliding from the first limiting groove 110 to the second limiting groove 130, the pusher assembly 400 gradually extends from the through hole 310 to push the residual material. Furthermore, because the extension direction of the second limiting groove 130 forms an angle with the extension direction of the first limiting groove 110, when the pusher assembly 400 is partially engaged with the second limiting groove 130, it is locked and remains in the extended state, thereby ensuring that even hard or sticky residual materials can be discharged from the hole-making device 10. Based on this, the hole-making device 10 provided by the present application reduces clogging and wear, and improves drilling accuracy and service life.

[0058] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A hole-making device, characterized in that: It comprises a sleeve (100), a cutter head (300) and a pusher assembly (400); The cutter head (300) is connected to the sleeve (100), and a through hole (310) communicating with the inner cavity of the sleeve (100) is provided along the axial direction of the sleeve (100); The sleeve (100) is provided with a first limiting groove (110) and a second limiting groove (130), and the first limiting groove (110) extends along the axial direction of the sleeve (100), the second limiting groove (130) is connected to an end of the first limiting groove (110) close to the cutter head (300), and an angle is formed between the extension direction of the second limiting groove (130) and the extension direction of the first limiting groove (110); The pusher assembly (400) is located in the inner cavity of the sleeve (100) and is partially slidably engaged with the first limiting groove (110) and the second limiting groove (130).

2. The hole making device according to claim 1, characterized in that: One end of the second limiting groove (130) is communicated with the first limiting groove (110), and the other end extends along the circumference of the sleeve (100).

3. The hole making device according to claim 1, characterized in that: The pusher assembly (400) includes a push pin (410) and a shift rod (430), wherein the push pin (410) is coaxially arranged with the sleeve (100) and extends along the axial direction of the sleeve (100); the shift rod (430) is connected to the push pin (410) and is slidably engaged with the first limiting groove (110) and the second limiting groove (130).

4. The hole making device according to claim 3, characterized in that: The ejector pin (410) comprises a connecting portion (411) and a pushing portion (413) connected to each other, the connecting portion (411) is connected to the shifting rod (430), and the pushing portion (413) extends along the axial direction of the sleeve (100).

5. The hole making device according to claim 4, characterized in that: The pushing assembly (400) further comprises an elastic member (450), which is sleeved on the pushing portion (413), and has two ends respectively abutting against the connecting portion (411) and the cutter head (300).

6. The hole making device according to claim 4, characterized in that: The connecting portion (411) is provided with a mounting groove (412), and the shifting rod (430) is threadedly connected to the mounting groove (412).

7. The hole making device according to claim 3, characterized in that: A circular protrusion (431) is provided on one end of the shifting rod (430) away from the ejector pin (410), and the maximum diameter of the circular protrusion (431) is greater than the width of the first limiting groove (110) and the second limiting groove (130).

8. The hole-making device according to any one of claims 1 to 7, characterized in that: The hole-making device (10) further comprises a handle (200), wherein the handle (200) is connected to an end of the sleeve (100) away from the cutter head (300).

9. The hole making device according to claim 8, characterized in that: The handle (200) comprises a mounting portion (210) and a gripping portion (230), wherein the mounting portion (210) is threadedly connected to the sleeve (100), and the gripping portion (230) is connected to the mounting portion (210).

10. The hole making device according to claim 9, characterized in that: The gripping portion (230) is symmetrically arranged on the mounting portion (210) with the axis of the sleeve (100) as a symmetry line.

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