Portable multifunctional bench drill
Patent Information
- Application Number
- CN202522247410.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-24
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-24
AI Technical Summary
[0005]本实用新型的目的在于,提供一种便携式多功能台钻,能够解决现有传统台钻及现有钻孔设备仍存在明显短板,难以满足多样化加工需求,一方面便携性差,传统台钻多为固定式结构,体积大、重量沉且依赖外接电源,在户外无固定电源的野外维修、现场安装等场景中,需搭配冗长电源线或笨重移动电源,搬运与使用严重受限,另一方面定位与深度精度不足,工件定位多依赖人工目测,缺乏精准微调结构,易出现孔位偏移导致零件报废,且钻孔深度需人工记录初始刻度计算,无法实时观测,即便电机钻孔机具备高效、灵活的优势,在钳工及车工实习等场景中,批量加工时深度一致性仍较差,良品率低,此外操作效率低,钻孔后需手动提拉机台复位,批量钻孔时重复操作繁琐、耗时费力的问题
[0017]1、本申请通过设置可微调夹具、钻孔机构和深度可视组件,使用时,可微调夹具能对工件进行精准定位,避免人工目测导致的孔位偏移,减少零件报废,钻孔机构工作前,可先调整L型板竖直段前侧的限位结构高度,使其与实际所需钻孔深度匹配,以此限制机台带动电机下降后的最低高度,提前锁定钻孔深度,随后转动旋轴带动齿轮与齿板啮合,带动机台沿导向轴平稳下降,同时机台压缩复位弹簧,启动电机后,电机带动钻头夹内的钻头完成钻孔,钻孔结束后松开旋轴,被压缩的复位弹簧会推动机台自动复位,无需手动提拉,解决了批量钻孔操作繁琐的问题,而深度可视组件与机台的插孔插接,在机台带动电机下降的同时能实时显示下降深度,配合限位结构双重保障钻孔深度精准,无需人工记录刻度计算,进一步确保批量加工时的深度一致性,提升良品率;
Smart Images

Figure CN224779394U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bench drill technology, and in particular to a portable multifunctional bench drill. Background Technology
[0002] As a major manufacturing country, my country's high-end equipment manufacturing industry is developing rapidly. In the production process, efficiency and cost must be balanced. Drilling machines, as commonly used hole processing equipment, can process holes in various materials such as metal, wood, stone, and plastic through rotational impact. They are one of the core equipment in various processing scenarios. As the manufacturing industry is a key area for the country's strategy to build a manufacturing powerhouse, drilling machines play an irreplaceable and crucial role, directly affecting the efficiency and quality of processing and production.
[0003] However, existing traditional bench drills and drilling equipment still have significant shortcomings, making it difficult to meet diverse processing needs. On the one hand, they are not portable. Traditional bench drills are mostly fixed structures, large in size, heavy, and rely on external power. In outdoor repairs and on-site installations where there is no fixed power supply, they need to be equipped with long power cords or bulky portable power supplies, which severely limits their handling and use. On the other hand, their positioning and depth accuracy are insufficient. Workpiece positioning relies heavily on manual visual inspection and lacks a precise fine-tuning structure, which can easily lead to hole position deviation and scrapping of parts. Moreover, the drilling depth needs to be manually recorded and calculated based on the initial scale, making real-time observation impossible. Even though motor-driven drilling machines have the advantages of high efficiency and flexibility, in scenarios such as fitter and lathe training, the depth consistency is still poor during batch processing, resulting in a low yield rate. In addition, the operating efficiency is low. After drilling, the machine needs to be manually lifted and reset. Repeated operations are cumbersome, time-consuming, and labor-intensive during batch drilling.
[0004] Therefore, a portable multi-functional bench drill is proposed. Utility Model Content
[0005] The purpose of this utility model is to provide a portable multi-functional bench drill that can solve the obvious shortcomings of existing traditional bench drills and drilling equipment, which are difficult to meet diverse processing needs. On the one hand, they are not portable. Traditional bench drills are mostly fixed structures, which are large, heavy and rely on external power. In outdoor repair and on-site installation scenarios without fixed power, they need to be equipped with long power cords or bulky mobile power supplies, which severely restricts their handling and use. On the other hand, their positioning and depth accuracy are insufficient. Workpiece positioning mostly relies on manual visual inspection and lacks a precise fine-tuning structure, which can easily lead to hole position deviation and scrapping of parts. Moreover, the drilling depth needs to be manually recorded and calculated based on the initial scale, which cannot be observed in real time. Even though motor-driven drilling machines have the advantages of high efficiency and flexibility, the depth consistency is still poor and the yield rate is low when batch processing in scenarios such as fitter and lathe practice. In addition, the operating efficiency is low. After drilling, the machine needs to be manually lifted and reset. The repetitive operation is cumbersome, time-consuming and laborious when batch drilling.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a portable multi-functional bench drill, comprising a base, wherein an adjustable clamp and an L-shaped plate are respectively provided on the front and rear sides of the top of the base, a drilling mechanism is provided on the front side of the L-shaped plate, a depth-viewing component is provided on the left side of the base, and a protective power supply structure is provided on the top of the base.
[0007] The drilling mechanism includes guide shafts welded to both sides of the top of the horizontal end of the L-shaped plate. A return spring is sleeved on the outer side of the guide shaft. A machine base is slidably connected to the outer side of the guide shaft. An insertion hole is opened on the left side of the machine base. The inside of the insertion hole is inserted into the right side of the depth-visualization component. Toothed plates are bolted to both sides of the L-shaped plate. A rotating shaft is rotatably connected to the rear side inside the machine base. Gears are fixedly connected to both sides of the rotating shaft. The gears mesh with the toothed plates. A motor is installed inside the machine base. A drill bit clamp is fixedly connected to the output end of the motor. A limit structure is provided on the front side of the vertical end of the L-shaped plate.
[0008] Preferably, the depth-visualization component includes a fixing groove formed on the left side of the base, and a fixing block is welded inside the fixing groove.
[0009] Preferably, a clamping block is bolted to the top of the fixing block, and a depth viewing device is provided inside the clamping block, the depth viewing device being located on the left side of the machine.
[0010] Preferably, a plug is fixedly connected to the right side of the movable end of the depth visualization device, and the plug is inserted into the inside of the socket.
[0011] Preferably, the limiting structure includes an adjustment groove formed on the front side of the vertical end of the L-shaped plate, and a limiting block is slidably connected inside the adjustment groove, the limiting block being located at the bottom of the machine.
[0012] Preferably, a locking bolt is provided on the rear side of the vertical end of the L-shaped plate, the front side of the locking bolt passes through the adjustment groove, and the front side of the locking bolt is threadedly connected to the rear side of the limiting block.
[0013] Preferably, the protective power supply structure includes a protective shell bolted to the rear side of the top of the base, the protective shell being located outside the L-shaped plate, and a frame bolted to the top of the protective shell.
[0014] Preferably, a power supply base is bolted to the top of the frame, a removable rechargeable lithium battery is inserted into the interior of the rear side of the power supply base, and an adjustment controller is provided on the right side of the power supply base. The adjustment controller is electrically connected to the power supply base and the motor respectively.
[0015] Preferably, the bottom of the return spring contacts the top of the horizontal end of the L-shaped plate, the top of the return spring contacts the bottom of the machine base, and an operating handle is welded to the right side of the rotating shaft.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1. This application incorporates a fine-tunable fixture, a drilling mechanism, and a depth-visualizing component. During use, the fine-tunable fixture precisely positions the workpiece, preventing hole misalignment caused by manual visual inspection and reducing part scrap. Before drilling, the height of the limiting structure on the front of the vertical section of the L-shaped plate can be adjusted to match the required drilling depth, thus limiting the minimum height of the machine tool after the motor descends and locking the drilling depth in advance. Then, rotating the shaft engages the gear and gear plate, causing the machine tool to descend smoothly along the guide shaft. Simultaneously, the machine tool compresses the return spring. After starting the motor, the motor drives the drill bit in the drill chuck to complete the drilling. After drilling, releasing the shaft causes the compressed return spring to automatically reset the machine tool, eliminating the need for manual lifting and solving the problem of cumbersome batch drilling operations. The depth-visualizing component connects to the machine tool's insertion hole, displaying the descent depth in real time while the machine tool descends. Combined with the limiting structure, this double-layered protection ensures accurate drilling depth, eliminating the need for manual recording and calculation, further ensuring consistent depth during batch processing and improving yield.
[0018] 2. This application features a protective power supply structure that eliminates the need for long power cords or portable power supplies, enabling outdoor use in environments without a fixed power source. It also protects components such as L-shaped plates and toothed plates from damage during use. Furthermore, it provides power to the motor while flexibly adjusting its operating status to suit different processing needs. Overall, this makes the equipment lighter and more flexible in terms of power supply, significantly improving portability and usability. Attached Figure Description
[0019] Figure 1 This is an overall structural diagram of the portable multi-functional bench drill of this utility model;
[0020] Figure 2 This is a structural diagram of the base of this utility model;
[0021] Figure 3 This is a structural diagram of the drilling mechanism of this utility model;
[0022] Figure 4 This is a structural diagram of the limiting structure of this utility model;
[0023] Figure 5 This is a structural diagram of the depth-visualization component of this utility model;
[0024] Figure 6 This is a structural diagram of the protective power supply structure of this utility model.
[0025] In the diagram: 1. Base; 2. Adjustable clamp; 3. L-shaped plate; 4. Drilling mechanism; 401. Guide shaft; 402. Return spring; 403. Machine base; 404. Insertion hole; 405. Gear plate; 406. Rotating shaft; 407. Gear; 408. Motor; 409. Limiting structure; 4091. Adjustment groove; 4092. Limiting block; 4093. Locking bolt; 5. Depth viewing component; 501. Fixing groove; 502. Fixing block; 503. Clamping block; 504. Depth viewing device; 505. Insertion post; 6. Protective power supply structure; 601. Protective shell; 602. Frame; 603. Power supply base; 604. Removable rechargeable lithium battery; 605. Adjustment controller; 7. Operating handle. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figure 1-6 The present invention provides the following technical solution:
[0028] A portable multi-functional bench drill includes a base 1, with an adjustable clamp 2 and an L-shaped plate 3 respectively provided on the front and rear sides of the top of the base 1, a drilling mechanism 4 provided on the front side of the L-shaped plate 3, a depth visualization component 5 provided on the left side of the base 1, and a protective power supply structure 6 provided on the top of the base 1.
[0029] The drilling mechanism 4 includes guide shafts 401 welded to the top two sides of the horizontal end of the L-shaped plate 3. A return spring 402 is sleeved on the outside of the guide shaft 401. A machine base 403 is slidably connected to the outside of the guide shaft 401. An insertion hole 404 is opened on the left side of the machine base 403. The inside of the insertion hole 404 is inserted into the right side of the depth visualization component 5. Toothed plates 405 are bolted to both sides of the L-shaped plate 3. A rotating shaft 406 is rotatably connected to the rear side inside the machine base 403. Gears 407 are fixedly connected to both sides of the rotating shaft 406. The gears 407 mesh with the toothed plates 405. A motor 408 is installed inside the machine base 403. A drill bit clamp is fixedly connected to the output end of the motor 408. A limit structure 409 is provided on the front side of the vertical end of the L-shaped plate 3.
[0030] In this embodiment: by setting up a base 1, a fine-tuning fixture 2, an L-shaped plate 3, a depth-visible component 5, and a protective power supply structure 6, during use, the workpiece is placed on top of the base 1. The fine-tuning fixture 2 can be moved along the X and Y axes to fix the workpiece in place, ensuring that it will not shift during processing. Then, according to the required drilling depth, the height of the limiting structure 409 on the front side of the vertical back end of the L-shaped plate 3 is adjusted to determine the lowest position of the machine tool 403. Subsequently, the power supply in the protective power supply structure 6 is checked to ensure that it is normal. The required operating parameters of the motor 408 are set. During processing, the rotating shaft 406 of the drilling mechanism 4 is rotated. The rotating shaft 406 drives the gears 407 on both sides to rotate. The gears 407 mesh with the toothed plates 405 on both sides of the L-shaped plate 3, thereby driving the machine tool 403 to slide downward along the guide shaft 401. At the same time, the machine tool... 403 compresses the outer return spring 402. During the descent of the machine platform 403, the left-side insertion hole 404 cooperates with the depth visualization component 5 to display the descent depth in real time. The operator can control the drilling progress by observing the depth. When the machine platform 403 descends to the position of the limit structure 409, it can no longer move down. At this time, the motor 408 is started. The motor 408 drives the drill bit in the drill bit chuck to rotate and drill the workpiece. After drilling is completed, the motor 408 is turned off and the rotating shaft 406 is released. The compressed return spring 402 generates elastic force and pushes the machine platform 403 to slide upward along the guide shaft 401 to reset, waiting for the next operation. Throughout the process, the protective power supply structure 6 not only provides power to the motor 408, but also protects components such as the L-shaped plate 3 and the toothed plate 405, ensuring stable operation of the equipment.
[0031] Specifically, such as Figure 5 As shown, the depth-visualization component 5 includes a fixing groove 501 opened on the left side of the base 1, and a fixing block 502 is welded inside the fixing groove 501.
[0032] Specifically, such as Figure 5 As shown, a clamping block 503 is bolted to the top of the fixing block 502, and a depth viewing device 504 is provided inside the clamping block 503. The depth viewing device 504 is located on the left side of the machine base 403.
[0033] Specifically, such as Figure 5 As shown, a pin 505 is fixedly connected to the right side of the movable end of the depth visualization device 504, and the pin 505 is inserted into the inside of the socket 404.
[0034] In this embodiment: By setting a depth-visualizing component 5, a fixing groove 501 is opened on the left side of the base 1. The fixing block 502 welded inside the fixing groove 501 provides a stable installation base for the clamping block 503. The clamping block 503 is bolted to the top of the fixing block 502. The depth-visualizing device 504 fixed inside it is located on the left side of the machine tool 403 and can correspond with the machine tool 403. When the machine tool 403 slides up and down along the guide shaft 401, the insertion post 505 on the right side of the moving end of the depth-visualizing device 504 will move synchronously with the insertion hole 404. The insertion post 505 is inserted into the insertion hole 404 on the left side of the machine tool 403. When the machine tool 403 descends, it drives the insertion post 505 to move. The depth-visualizing device 504 will record and display the moving distance synchronously. The operator can directly read the drilling depth through the device without manually recording the initial scale or estimating, ensuring that the drilling depth can be accurately controlled each time. It is especially suitable for ensuring the consistency of depth during batch processing.
[0035] Specifically, such as Figure 4 As shown, the limiting structure 409 includes an adjustment groove 4091 opened on the front side of the vertical end of the L-shaped plate 3, and a limiting block 4092 is slidably connected inside the adjustment groove 4091. The limiting block 4092 is located at the bottom of the machine base 403.
[0036] Specifically, such as Figure 4 As shown, a locking bolt 4093 is provided on the rear side of the vertical end of the L-shaped plate 3. The front side of the locking bolt 4093 passes through the adjustment groove 4091, and the front side of the locking bolt 4093 is threadedly connected to the rear side of the limit block 4092.
[0037] In this embodiment: By setting a limiting structure 409, an adjusting groove 4091 is opened on the front side of the vertical end of the L-shaped plate 3. The limiting block 4092, which is slidably connected inside the adjusting groove 4091, is located at the bottom of the machine base 403. The height can be adjusted by sliding. When it is necessary to determine the drilling depth, first loosen the locking bolt 4093 on the rear side of the vertical end of the L-shaped plate 3, push the limiting block 4092 to slide in the adjusting groove 4091 to a position that matches the required drilling depth, and then tighten the locking bolt 4093 to fix the limiting block 4092 in the adjusting groove 4091. At this time, the machine base 403 descends along the guide shaft 401. When the bottom of the machine base 403 contacts the limiting block 4092, it can no longer move down, thereby accurately limiting the drilling depth without relying on manual real-time observation, further improving the efficiency and accuracy of batch drilling.
[0038] Specifically, such as Figure 6 As shown, the protective power supply structure 6 includes a protective shell 601 bolted to the rear side of the top of the base 1. The protective shell 601 is located on the outside of the L-shaped plate 3, and a frame 602 is bolted to the top of the protective shell 601.
[0039] Specifically, such as Figure 6As shown, a power supply base 603 is bolted to the top of the frame 602. A removable rechargeable lithium battery 604 is inserted into the interior of the rear side of the power supply base 603. An adjustment controller 605 is provided on the right side of the power supply base 603. The adjustment controller 605 is electrically connected to the power supply base 603 and the motor 408 respectively.
[0040] In this embodiment: By setting up a protective power supply structure 6, the protective shell 601 is bolted to the top rear side of the base 1 and located outside the L-shaped plate 3. It can enclose the L-shaped plate 3 and surrounding components such as the toothed plate 405 and guide shaft 401, preventing damage to components caused by foreign object impact or dust accumulation during use. The frame 602 bolted to the top of the protective shell 601 provides installation support for the power supply base 603. The removable rechargeable lithium battery 604 inserted inside the rear side of the power supply base 603 can replace the traditional external power supply, eliminating the need for a long power cord or mobile power supply, making it convenient for use in outdoor scenarios without a fixed power source. The adjustment controller 605 on the right side of the power supply base 603 is electrically connected to the power supply base 603 and the motor 408, respectively. It can control the power supply base 603 to supply power to the motor 408, and can also adjust the speed of the motor 408 according to processing requirements (such as drilling holes in different materials), allowing the equipment to adapt to more processing scenarios. The overall design takes into account protection, power supply and adjustment functions, improving the flexibility and safety of use.
[0041] Specifically, such as Figure 6 As shown, the bottom of the return spring 402 contacts the top of the horizontal end of the L-shaped plate 3, the top of the return spring 402 contacts the bottom of the machine base 403, and an operating handle 7 is welded to the right side of the rotating shaft 406.
[0042] In this embodiment: An operating handle 7 is provided and welded to the right side of the rotating shaft 406. The rotating shaft 406 is rotatably connected to the rear side of the machine base 403. Gears 407 that mesh with the toothed plates 405 are also fixed on both sides of the rotating shaft 406. When it is necessary to drive the machine base 403 to descend, the operator holds the operating handle 7 and rotates it clockwise. The operating handle 7 will drive the rotating shaft 406 to rotate synchronously. The rotating shaft 406 will then drive the gears 407 on both sides to mesh with the toothed plates 405 on both sides of the L-shaped plate 3, thereby driving the machine base 403 to descend smoothly along the guide shaft 401. When it is necessary to stop the descent or reset the machine base 403, the operator can release the operating handle 7 to achieve automatic reset in conjunction with the reset spring 402. Compared with directly rotating the rotating shaft 406, the operating handle 7 increases the lever arm of the force application point, making the rotation less strenuous. At the same time, it can avoid the slippage caused by the hand directly contacting the rotating shaft 406, ensuring a smoother lifting and lowering process of the machine base 403 and improving the safety and convenience of operation.
[0043] Working Principle: When using the portable multi-functional bench drill, first place the workpiece on top of the base 1. Adjust it by translating it in the X and Y axes using the adjustable clamp 2 to ensure the workpiece is properly positioned and prevent displacement during processing. Next, adjust the limiting structure 409 according to the required drilling depth. First, loosen the locking bolt 4093 on the rear side of the vertical end of the L-shaped plate 3, push the limiting block 4092 in the adjusting groove 4091 to slide to the appropriate height, and then tighten the locking bolt 4093 to fix it. This determines the lowest position of the machine 403. Afterward, check the protective power supply structure 6 to ensure that the removable rechargeable lithium battery 604 inserted on the rear side of the power supply base 603 is properly installed. The operating parameters required for the motor 408 are set via the adjustment controller 605 on the right side of the power supply base 603. At this time, the protective shell 601 will enclose and protect the L-shaped plate 3 and surrounding components such as the toothed plates 405 and guide shaft 401 to prevent them from being impacted by foreign objects or affected by dust during use. During processing, the operator holds the operating handle 7 on the right side of the rotating shaft 406 and rotates it clockwise. The operating handle 7 drives the rotating shaft 406 to rotate, and the gears 407 on both sides of the rotating shaft 406 mesh with the toothed plates 405 on both sides of the L-shaped plate 3, thereby driving the machine base 403 to slide downward along the guide shaft 401. At the same time, the machine base 403 compresses the outer return spring 402 (the bottom of the return spring 402 is attached to the L-shaped plate). 3. The top of the horizontal end contacts the bottom of the machine platform 403. During the descent of the machine platform 403, the insertion post 505 of the depth visualization component 5 inserted in the left insertion hole 404 will move synchronously. The insertion post 505 is connected to the moving end of the depth visualization device 504, and the depth visualization device 504 is fixed to the fixing block 502 in the fixing groove 501 on the left side of the base 1 by the clamping block 503. Therefore, the descent depth of the machine platform 403 can be recorded and displayed in real time. The operator can directly observe the device to read the depth and control the drilling progress. When the bottom of the machine platform 403 contacts the previously adjusted limit block 4092, it can no longer move down. At this time, the motor 408 is started. The drill bit inside the drill chuck rotates to drill a hole in the workpiece. After drilling is complete, the motor 408 is turned off, the operating handle 7 is released, and the compressed return spring 402 generates elastic force, pushing the machine base 403 to slide upward along the guide shaft 401 to return to its original position, ready for the next operation. This device has no fixed requirements for the operating environment. Powered by a removable rechargeable lithium battery 604, it can be used in environments without power. The overall structure is simple, lightweight, and easy to operate. Through the cooperation of the adjustable fixture 2, the limiting structure 409, and the depth-visible component 5, the accuracy of the processed parts can be effectively improved. The design of the return spring 402 and the operating handle 7 improves the operating efficiency and has good practicality.
[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A portable multi-functional bench drill, comprising a base (1), characterized in that: The base (1) is provided with a finely adjustable clamp (2) and an L-shaped plate (3) on the front and rear sides of the top, respectively. The L-shaped plate (3) is provided with a drilling mechanism (4) on the front side. The base (1) is provided with a depth-visual component (5) on the left side. The base (1) is provided with a protective power supply structure (6) on the top. The drilling mechanism (4) includes guide shafts (401) welded to the top two sides of the horizontal end of the L-shaped plate (3). A return spring (402) is sleeved on the outside of the guide shaft (401). A machine platform (403) is slidably connected to the outside of the guide shaft (401). An insertion hole (404) is opened on the left side of the machine platform (403). The inside of the insertion hole (404) is inserted into the right side of the depth visualization component (5). Tooth plates (405) are bolted to both sides of the L-shaped plate (3). A rotating shaft (406) is rotatably connected to the rear side inside the machine platform (403). Gears (407) are fixedly connected to both sides of the rotating shaft (406). The gears (407) mesh with the tooth plates (405). A motor (408) is installed inside the machine platform (403). A drill bit clamp is fixedly connected to the output end of the motor (408). A limit structure (409) is provided on the front side of the vertical end of the L-shaped plate (3).
2. The portable multi-functional bench drill according to claim 1, characterized in that: The depth-visualization component (5) includes a fixing groove (501) opened on the left side of the base (1), and a fixing block (502) is welded inside the fixing groove (501).
3. The portable multi-functional bench drill according to claim 2, characterized in that: A clamping block (503) is bolted to the top of the fixing block (502), and a depth viewing device (504) is provided inside the clamping block (503). The depth viewing device (504) is located on the left side of the machine base (403).
4. A portable multi-functional bench drill according to claim 3, characterized in that: A plug (505) is fixedly connected to the right side of the movable end of the depth visualization device (504), and the plug (505) is inserted into the inside of the socket (404).
5. A portable multi-functional bench drill according to claim 1, characterized in that: The limiting structure (409) includes an adjustment groove (4091) opened on the front side of the vertical end of the L-shaped plate (3), and a limiting block (4092) is slidably connected inside the adjustment groove (4091), and the limiting block (4092) is located at the bottom of the machine base (403).
6. A portable multi-functional bench drill according to claim 5, characterized in that: A locking bolt (4093) is provided on the rear side of the vertical end of the L-shaped plate (3). The front side of the locking bolt (4093) passes through the adjustment groove (4091), and the front side of the locking bolt (4093) is threadedly connected to the rear side of the limiting block (4092).
7. A portable multi-functional bench drill according to claim 1, characterized in that: The protective power supply structure (6) includes a protective shell (601) bolted to the rear side of the top of the base (1). The protective shell (601) is located on the outside of the L-shaped plate (3), and a frame (602) is bolted to the top of the protective shell (601).
8. A portable multi-functional bench drill according to claim 7, characterized in that: A power supply base (603) is bolted to the top of the frame (602). A removable rechargeable lithium battery (604) is inserted into the interior of the rear side of the power supply base (603). An adjustment controller (605) is provided on the right side of the power supply base (603). The adjustment controller (605) is electrically connected to the power supply base (603) and the motor (408) respectively.
9. A portable multi-functional bench drill according to claim 1, characterized in that: The bottom of the reset spring (402) contacts the top of the horizontal end of the L-shaped plate (3), the top of the reset spring (402) contacts the bottom of the machine base (403), and an operating handle (7) is welded to the right side of the rotating shaft (406).