A multi-stage directional drill bit for deep hole machining

Abstract

This utility model discloses a multi-stage guide drill bit for deep hole machining, belonging to the field of deep hole machining. It includes a connecting block, one side of which is movably connected to a locking arc block, and one side of which is fixedly connected to an inner spring. One end of the inner spring is fixedly connected to a mating block, and the bottom of the mating block is fixedly connected to an mounting drill bit. An insertion post is movably connected inside the mating block, and the top of the connecting block is fixedly connected to a limiting circular frame with an internal threaded strip. Through the design of the connecting block, locking arc block, inner spring, mating block, mounting drill bit, and insertion post, the multi-stage guide drill bit for deep hole machining becomes more convenient to use, reducing the complexity of drill bit replacement, reducing the time required for drill bit replacement, accelerating the subsequent work process, improving overall work efficiency, and facilitating long-term use in deep hole machining.

Description

Technical Field

[0001] This utility model relates to the field of deep hole machining technology, specifically a multi-stage directional drill bit for deep hole machining. Background Technology

[0002] Deep hole machining is a machining process for holes with a depth-to-diameter ratio greater than 5 (10 in some industry standards). Due to the long hole depth, the machining process faces many challenges, such as difficulty in chip removal, insufficient tool cooling and lubrication, and poor tool rigidity leading to easy deviation and hole axis misalignment. Specialized deep hole drilling tools (such as gun drills, BTA drills, etc.) and deep hole drilling machines are required, along with high-pressure cooling and lubrication systems, guiding devices, and other auxiliary equipment. By rationally selecting cutting parameters, high-precision and high-quality deep hole machining can be achieved. It is widely used in the processing of key components in aerospace, energy equipment, automobile manufacturing and other fields. Multi-stage guided drills are an indispensable component.

[0003] An investigation revealed that a Chinese utility model patent (CN211680167U) discloses a multi-guided drill bit for deep hole machining. The drill bit includes a drill bit, a guide assembly connected to the drill bit, and a drive rod connected to the guide assembly. A first connecting structure is provided at the end of the drill bit furthest from the main cutting edge. The guide assembly comprises several guide rods with identical structures. The advantages of this utility model are: adjusting the number of guide rods allows for adjustment of the drilling depth; the oil supply and drill rod box connected to the drive rod move only a short distance during drilling, facilitating a reduction in drill size; the drive rod is fixed to the drill rod box, eliminating the need for disassembly and extending the lifespan of the drill rod box; multiple guide rods provide multi-guiding within the hole, stabilizing the drilling direction and improving drilling accuracy; the connection structure between the drill bit and guide rods is the same as the connection structure between the guide rods and drive rods, allowing the drill bit to be combined with any number of guide rods, facilitating installation and disassembly and effectively improving work efficiency.

[0004] The aforementioned patent is not very convenient for users. When the drill bit is damaged, it cannot be replaced quickly, which increases the tediousness of drill bit replacement for workers, increases the time required for drill bit replacement, affects the progress of subsequent work, reduces the overall work efficiency, and is not conducive to long-term use in deep hole machining.

[0005] Therefore, this utility model provides a multi-stage guide drill bit for deep hole machining to solve the above problems. Utility Model Content

[0006] This invention provides a multi-stage directional drill bit for deep hole machining, aiming to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage guide drill bit for deep hole machining, comprising a connecting block, a locking arc block movably connected to one side of the connecting block, an inner spring fixedly connected to one side of the locking arc block, and a docking block fixedly connected to one end of the inner spring.

[0008] The bottom of the docking block is fixedly connected to a drill bit, and the interior of the docking block is movably connected to a mating post. This makes the use of multi-stage guide drill bits for deep hole machining more convenient, thereby reducing the complexity of drill bit replacement for workers, reducing the time required for drill bit replacement, speeding up the subsequent work process, improving the overall work efficiency, and facilitating long-term use in deep hole machining.

[0009] As a preferred technical solution of this application, the top of the connecting block is fixedly connected to a limiting circular frame, and the inside of the limiting circular frame is provided with an internal thread strip to facilitate the limiting of external components.

[0010] As a preferred technical solution of this application, the top of the limiting circular frame is fixedly connected to a locking arc plate, and a locking bolt is movably connected to one side of the locking arc plate, which facilitates further fixing of the overall position of the structure.

[0011] As a preferred technical solution of this application, the connecting block is internally connected to a mating block, and the length, width and height of the mating block are all smaller than the length, width and height of the connecting block, which facilitates quick fitting and removal with the overall structure.

[0012] As a preferred technical solution of this application, a rotating column is fixedly connected to one side of the mating block, and a rotating handle is fixedly connected to one end of the rotating column, so as to facilitate the rotation of the mating block during the position locking process.

[0013] As a preferred technical solution of this application, one side of the locking arc block is movably connected to the interior of the docking block through an inner spring, and there are two inner springs and two locking arc blocks, which facilitates the positioning of the docking block.

[0014] As a preferred technical solution of this application, the top end of the insertion post is fixedly connected to the interior of the connecting block, the outer wall of the insertion post is movably connected to the interior of the docking block, and there are two insertion posts to provide support for the rotating opening for installing the drill bit. Beneficial effects

[0015] This utility model provides a multi-stage guide drill bit for deep hole machining. By setting a connecting block, a locking arc block, an inner spring, a docking block, a mounting drill bit, and a plugging post, the multi-stage guide drill bit for deep hole machining can be used more conveniently, thereby reducing the complexity of drill bit replacement for workers, reducing the time required for drill bit replacement, speeding up the subsequent work process, improving the overall work efficiency, and being conducive to long-term use in deep hole machining.

[0016] This utility model provides a multi-stage guide drill bit for deep hole machining. By setting a limiting circular frame, internal threaded strip, locking arc plate and locking bolt, it can provide stable position locking for the drill bit, avoid the situation of falling off during operation, improve the stability of the drill bit during operation, and facilitate the long-term operation of the drill bit. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0019] Figure 2 This is a bottom view of the structure of this utility model;

[0020] Figure 3 This is a top view of the structure of this utility model;

[0021] Figure 4 This is a side sectional view of the structure of this utility model;

[0022] Figure 5 This is the utility model Figure 4 Enlarged view of the structure at point A in the middle.

[0023] In the picture:

[0024] 1. Connecting block; 2. Engaging arc block; 3. Inner spring; 4. Connecting block; 5. Drill bit mounting block; 6. Insertion post; 7. Limiting circular frame; 8. Internal threaded strip; 9. Locking arc plate; 10. Locking bolt; 11. Insertion block; 12. Rotating post; 13. Rotating handle. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-5 The present invention provides a technical solution: a multi-stage guide drill bit for deep hole machining, including a connecting block 1, a locking arc block 2 movably connected to one side of the connecting block 1, an inner spring 3 fixedly connected to one side of the locking arc block 2, and a docking block 4 fixedly connected to one end of the inner spring 3.

[0027] The bottom of the docking block 4 is fixedly connected to a drill bit 5, and the internal part of the docking block 4 is movably connected to a mating post 6. This makes the multi-stage guide drill bit used for deep hole machining more convenient to use, thereby reducing the complexity of changing drill bits and the time required for changing drill bits, speeding up the subsequent work process, improving the overall work efficiency, and being conducive to long-term use in deep hole machining.

[0028] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: the top of the connecting block 1 is fixedly connected to a limiting circular frame 7, the inside of the limiting circular frame 7 is provided with an internal threaded strip 8, which facilitates the external components to limit it, the top of the limiting circular frame 7 is fixedly connected to a locking arc plate 9, and one side of the locking arc plate 9 is movably connected to a locking bolt 10, which facilitates further fixing of the overall position of the structure.

[0029] The connecting block 1 has an internal movable connection to a mating block 11, and the length, width and height of the mating block 11 are all smaller than the length, width and height of the connecting block 1, so as to facilitate quick fitting and removal with the whole structure. A rotating column 12 is fixedly connected to one side of the mating block 11, and a rotating handle 13 is fixedly connected to one end of the rotating column 12, so as to facilitate the rotation of the connecting block 1 during the position locking process.

[0030] One side of the locking arc block 2 is movably connected to the interior of the docking block 4 via an inner spring 3, and there are two inner springs 3 and two locking arc blocks 2, which facilitates limiting the position of the docking block 4. The top of the insertion post 6 is fixedly connected to the interior of the connecting block 1, and the outer wall of the insertion post 6 is movably connected to the interior of the docking block 4. There are two insertion posts 6, which provide support for the rotating opening for installing the drill bit 5.

[0031] like Figure 1-5As shown, when a user needs to use a multi-stage guide drill bit for deep hole machining, the limiting round frame 7 is aligned with the installation point. By turning the rotating handle 13, the connecting block 1 and the limiting round frame 7 are rotated, so that the internal threaded strip 8 can be tightened with the installation point. Then, by turning the locking bolt 10, the locking arc plate 9 can be locked with the working position. Then, the insertion block 11 is pulled out, so that the rotating column 12 and the rotating handle 13 are separated from the overall structure. This completes the fixing of the overall position of the drill bit. If the installation drill bit 5 needs to be replaced, the locking arc block 2 is pressed, so that the inner spring 3 is contracted, so that the locking arc block 2 retracts into the interior of the docking block 4. At this time, the installation drill bit 5 is pulled out downwards, and the docking block 4 will also leave the connecting block 1 and the insertion column 6 at the same time. Then, the new docking block 4 and the installation drill bit 5 are taken out, and the docking block 4 and the insertion column 6 are aligned and pressed, so that the arc surface of the locking arc block 2 is compressed and then popped out to one side of the connecting block 1, thus completing the replacement of the installation drill bit 5.

[0032] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-stage guide drill bit for deep hole machining, comprising a connecting block (1), characterized in that: One side of the connecting block (1) is movably connected to a locking arc block (2), one side of the locking arc block (2) is fixedly connected to an inner spring (3), and one end of the inner spring (3) is fixedly connected to a docking block (4). The bottom of the docking block (4) is fixedly connected to a drill bit (5), and the interior of the docking block (4) is movably connected to a mating post (6).

2. The multi-stage guide drill bit for deep hole machining according to claim 1, characterized in that: The top of the connecting block (1) is fixedly connected to a limiting circle frame (7), and the inside of the limiting circle frame (7) is provided with an internal threaded strip (8).

3. A multi-stage guide drill bit for deep hole machining according to claim 2, characterized in that: The top of the limiting circular frame (7) is fixedly connected to a locking arc plate (9), and a locking bolt (10) is movably connected to one side of the locking arc plate (9).

4. A multi-stage guide drill bit for deep hole machining according to claim 1, characterized in that: The connecting block (1) is internally connected to a mating block (11), and the length, width and height of the mating block (11) are all smaller than the length, width and height of the connecting block (1).

5. A multi-stage guide drill bit for deep hole machining according to claim 4, characterized in that: A rotating column (12) is fixedly connected to one side of the insertion block (11), and a rotating handle (13) is fixedly connected to one end of the rotating column (12).

6. A multi-stage guide drill bit for deep hole machining according to claim 1, characterized in that: One side of the locking arc block (2) is movably connected to the inside of the docking block (4) via an inner spring (3), and there are two inner springs (3) and two locking arc blocks (2).

7. A multi-stage directional drill bit for deep hole machining according to claim 1, characterized in that: The top of the insertion post (6) is fixedly connected to the inside of the connecting block (1), and the outer wall of the insertion post (6) is movably connected to the inside of the docking block (4). There are two insertion posts (6).

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