Coating drill bit capable of adjusting drilling depth

Abstract

The utility model belongs to the technical field of coating drill bits, particularly relates to a drill bit capable of adjusting drilling depth, and aims to solve the problem that the existing drill bit cannot be adjusted, and adopts the following scheme that the drill bit comprises a connecting end, a clamping groove is formed in the top end of the connecting end, a sleeve is fixedly mounted at the bottom end of the connecting end, and the bottom end of the sleeve penetrates out of a drill bit body; according to the telescopic drill bit, the drill rod drives the drill bit body to be connected in the sleeve in a sliding mode through a telescopic structure composed of the fixing block and the sleeving block, the drill bit body stably slides along the limiting groove through the limiting block, the limiting effect is achieved, and the drill bit body is prevented from loosening during drilling operation; the first abutting ring, the connecting plate and the second abutting ring can abut against the limiting block and drive the limiting block to slide when rotating along the sleeve to adjust the position, so that the drill rod is driven to adjust the position of the drill bit body, adjustment can be conducted according to the needed drilling depth, and the comprehensiveness and applicability in the using process are improved.

Description

Technical Field

[0001] This utility model relates to a coated drill bit, specifically a coated drill bit with adjustable drilling depth, belonging to the field of drill bit technology. Background Technology

[0002] Coated drill bits are drill bits with one or more layers of special materials coated on the surface of a traditional drill bit substrate. The high hardness and wear resistance of the coating enhance the drill bit's ability to resist wear during cutting, extend its service life, reduce the frequency of drill bit replacement, and improve processing efficiency. They can be used for drilling various metal materials, such as steel, aluminum alloys, copper, and cast iron. In industries such as automobile manufacturing, machining, and aerospace, they are used to process engine blocks, gearbox housings, aircraft structural components, and other parts.

[0003] In the prior art, such as the coated alloy drill bit disclosed in announcement number CN213288814U, this utility model achieves the effect of positioning the connecting plate through the locking block and the locking groove, avoiding the situation where it cannot be fixed. The groove and the support rod facilitate the connection between the drill body and the drill bit body. The slider and the sliding groove facilitate the fixing of the support rod. The positioning groove facilitates the fixing of the drill body.

[0004] However, in implementing the relevant technology, the following problems were found in the above-mentioned coated alloy drill bit design: In the prior art, the drill bit can be easily disassembled and assembled by the cooperation of components such as the chuck and the slot, but in actual use, the drill bit and drill rod are integral structures and cannot be adjusted according to the required drilling depth, resulting in poor applicability. In view of this, an adjustable drilling depth coated drill bit is provided to overcome the above defects. Utility Model Content

[0005] This invention addresses the problem that the aforementioned drill bit and drill rod are integral structures, which cannot be adjusted according to the required drilling depth and have poor applicability. Therefore, it provides a coated drill bit with adjustable drilling depth.

[0006] The present invention achieves the above objectives through the following technical solution: a coated drill bit with adjustable drilling depth, comprising a connecting end, a slot being provided at the top of the connecting end, and a sleeve being fixedly installed at the bottom of the connecting end, a drill bit body extending through the bottom of the sleeve, and a drill rod being fixedly installed at one end of the drill bit body located inside the sleeve, and an adjustment mechanism being provided on the outside of the sleeve.

[0007] The adjustment mechanism includes a limiting groove, which is formed on the outer wall of the sleeve. A limiting block is fixedly installed on the outer wall of the drill rod at the position corresponding to the limiting groove. A first abutting ring is slidably connected to one side of the limiting groove on the outer wall of the sleeve, and a connecting plate is fixedly installed at the bottom end of the first abutting ring. A second abutting ring is fixedly installed at the bottom end of the connecting plate.

[0008] As a further embodiment of this utility model: the bottom end of the connecting end is fixedly installed with a sleeve block inside the sleeve, and the bottom end of the sleeve block has a fixing block protruding through it.

[0009] As a further improvement of this utility model: the limiting block and the limiting groove form a sliding structure, and the limiting block is in close contact with the first abutting ring.

[0010] As a further embodiment of this utility model: the first abutment ring is threadedly connected to the sleeve, and the sleeve is threadedly connected to the second abutment ring.

[0011] As a further improvement of this utility model: a fixing plate is fixedly installed on the lower part of the outer wall of the sleeve, and a positioning mechanism is provided on one side of the fixing plate.

[0012] As a further improvement of this utility model: the positioning mechanism includes a positioning hole, which is opened at the top of the fixed plate, and a connecting post extends through the inside of the positioning hole.

[0013] As a further embodiment of this utility model: a telescopic rod is fixedly installed at the top of the connecting column, and a support rod extends through the top of the telescopic rod, with connecting frames rotatably connected to both ends of the support rod.

[0014] The beneficial effects of this utility model are as follows: Firstly, the telescopic structure composed of the fixing block and the sleeve block allows the drill rod to slide and connect the drill bit body inside the sleeve. When the limiting block slides stably along the limiting groove, it also has a limiting effect, preventing the drill bit body from becoming loose during drilling operations. The first abutting ring, the connecting plate, and the second abutting ring can abut against the limiting block and drive the limiting block to slide when the position is adjusted by rotating along the sleeve, thereby driving the drill rod to adjust the position of the drill bit body. It can be adjusted according to the required drilling depth, improving the comprehensiveness and applicability of the use process.

[0015] The bottom of the second contact ring is connected by a fixed connecting frame and rotated via a support rod and a telescopic rod. After the drill rod and drill bit body are adjusted, the telescopic rod is retracted or extended, and the connecting column is inserted into the positioning hole of the fixed plate for limiting. The fixed plate, which is fixed by the sleeve, can limit the second contact ring, preventing it from loosening due to inertia during drilling. This would cause the connecting plate and the second contact ring to slide, resulting in the limiting block becoming loose, affecting the drilling stability of the drill bit body, and thus failing to make tight contact with the processed material. This would affect the drilling operation and even damage the processed material, rendering it unusable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the limiting block structure of this utility model;

[0018] Figure 3 This utility model Figure 1 Enlarged view of point A in the middle;

[0019] Figure 4 This is a schematic diagram of the support rod structure of this utility model.

[0020] In the diagram: 1. Connecting end; 2. Slot; 3. Sleeve; 4. Drill bit body; 5. Drill rod; 6. Adjusting mechanism; 601. Limiting groove; 602. Limiting block; 603. First abutment ring; 604. Connecting plate; 605. Second abutment ring; 606. Fixing block; 607. Sleeve block; 7. Fixing plate; 8. Positioning mechanism; 801. Positioning hole; 802. Connecting column; 803. Telescopic rod; 804. Support rod; 805. Connecting frame. Detailed Implementation

[0021] 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. Example 1

[0022] like Figures 1 to 4As shown, an adjustable drilling depth coated drill bit includes a connecting end 1, a groove 2 at the top of the connecting end 1, a sleeve 3 fixedly installed at the bottom of the connecting end 1, a drill bit body 4 extending from the bottom of the sleeve 3, a drill rod 5 fixedly installed at one end of the drill bit body 4 inside the sleeve 3, and an adjustment mechanism 6 provided on the outside of the sleeve 3. The adjustment mechanism 6 includes a limiting groove 601, which is formed on the outer wall of the sleeve 3. A limiting block 602 is fixedly installed on the outer wall of the drill rod 5 at a position corresponding to the limiting groove 601. A first abutment ring 603 is slidably connected to one side of the limiting groove 601 on the outer wall of the sleeve 3. A connecting plate 604 is fixedly installed at the bottom of the first abutment ring 603, and a second abutment ring 605 is fixedly installed at the bottom of the connecting plate 604. A sleeve block 607 is fixedly installed at the bottom of the connecting end 1 inside the sleeve 3, and a fixed... Block 606, limiting block 602 and limiting groove 601 form a sliding structure. Limiting block 602 is tightly fitted with first abutment ring 603. First abutment ring 603 is threadedly connected to sleeve 3. Sleeve 3 is threadedly connected to second abutment ring 605. Firstly, through the telescopic structure composed of fixing block 606 and sleeve block 607, drill rod 5 drives drill bit body 4 to slide inside sleeve 3. When limiting block 602 slides stably along limiting groove 601, it also has a limiting effect, preventing drill bit body 4 from loosening during drilling. First abutment ring 603, connecting plate 604 and second abutment ring 605 can abut against limiting block 602 and drive limiting block 602 to slide when rotating along sleeve 3 to adjust position, thereby driving drill rod 5 to adjust the position of drill bit body 4. It can be adjusted according to the required drilling depth, improving the comprehensiveness and applicability of the use process. Example 2

[0023] In addition to all the technical features in Embodiment 1, this embodiment also includes: a fixing plate 7 fixedly installed on the lower outer wall of the sleeve 3; a positioning mechanism 8 provided on one side of the fixing plate 7; the positioning mechanism 8 includes a positioning hole 801, which is located at the top of the fixing plate 7; a connecting post 802 extends through the interior of the positioning hole 801; a telescopic rod 803 is fixedly installed at the top of the connecting post 802; a support rod 804 extends through the interior of the top of the telescopic rod 803; and connecting frames 805 are rotatably connected to both ends of the support rod 804; the bottom end of the second abutment ring 605 rotates via the fixed connecting frame 805, the support rod 804, and the telescopic rod 803. After the positions of drill rod 5 and drill bit body 4 are adjusted, the telescopic rod 803 is retracted or extended, and the connecting column 802 is inserted into the positioning hole 801 of the fixing plate 7 for limiting. This allows the fixing plate 7, which is fixed by the sleeve 3, to limit the second contact ring 605, preventing the second contact ring 605 from loosening due to inertia during drilling operations. This would cause the connecting plate 604 and the second contact ring 605 to slide, resulting in the limiting block 602 becoming loose, affecting the drilling stability of the drill bit body 4, and thus preventing it from making tight contact with the processed material. This would affect the drilling operation and even damage the processed material, rendering it unusable.

[0024] Working principle: Connecting end 1 and slot 2 are used to connect with the machine tool or power end. The fixing block 606 and sleeve block 607 slide and engage, allowing the drill rod 5 to slide and connect the drill bit body 4 inside the sleeve 3. The limiting block 602 slides along the limiting groove 601. The first abutting ring 603 and the second abutting ring 605 abut against the top and bottom ends of the limiting block 602 respectively, and are connected by the connecting plate 604. By rotating the first abutting ring 603 and the second abutting ring 605, and sliding them along the sleeve 3, the limiting block 602 can be adjusted to change the position of the drill rod 5, facilitating the displacement of the drill bit body 4 to adapt to different drilling depths. The overall design ensures comprehensiveness, while the limiting groove 601 limits the limiting block 602, preventing the drill bit body 4 from becoming loose during drilling. Once the position is determined, the connecting frame 805, fixed at the bottom of the second abutment ring 605, works with the support rod 804 to rotate the telescopic rod 803, thereby aligning the connecting column 802 with the positioning hole 801 in the fixing plate 7 and inserting it. This limits the second abutment ring 605, preventing it from rotating during the drilling rotation of the drill bit body 4, which would cause the connecting plate 604 and the first abutment ring 603 to loosen and shift, affecting the limiting block 602 and causing the drill bit body 4 to become loose.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A coated drill bit with adjustable drilling depth, comprising a connecting end (1), characterized in that: The top end of the connecting end (1) is provided with a slot (2), and the bottom end of the connecting end (1) is fixedly installed with a sleeve (3). The bottom end of the sleeve (3) has a drill bit body (4) extending out, and the drill bit body (4) is fixedly installed with a drill rod (5) at one end inside the sleeve (3). An adjustment mechanism (6) is provided on the outside of the sleeve (3). The adjustment mechanism (6) includes a limiting groove (601), which is formed on the outer wall of the sleeve (3). A limiting block (602) is fixedly installed on the outer wall of the drill rod (5) at the position corresponding to the limiting groove (601). A first abutting ring (603) is slidably connected to one side of the limiting groove (601) on the outer wall of the sleeve (3), and a connecting plate (604) is fixedly installed at the bottom end of the first abutting ring (603). A second abutting ring (605) is fixedly installed at the bottom end of the connecting plate (604).

2. The coated drill bit with adjustable drilling depth according to claim 1, characterized in that: The bottom end of the connecting end (1) is located inside the sleeve (3) and a sleeve block (607) is fixedly installed thereon, and a fixing block (606) protrudes from the bottom end of the sleeve block (607).

3. The coated drill bit with adjustable drilling depth according to claim 1, characterized in that: The limiting block (602) and the limiting groove (601) form a sliding structure, and the limiting block (602) is in close contact with the first abutment ring (603).

4. The coated drill bit with adjustable drilling depth according to claim 1, characterized in that: The first abutment ring (603) is threadedly connected to the sleeve (3), and the sleeve (3) is threadedly connected to the second abutment ring (605).

5. The coated drill bit with adjustable drilling depth according to claim 1, characterized in that: A fixing plate (7) is fixedly installed on the lower part of the outer wall of the sleeve (3), and a positioning mechanism (8) is provided on one side of the fixing plate (7).

6. The coated drill bit with adjustable drilling depth according to claim 5, characterized in that: The positioning mechanism (8) includes a positioning hole (801), which is located at the top of the fixing plate (7), and a connecting post (802) extends through the interior of the positioning hole (801).

7. The coated drill bit with adjustable drilling depth according to claim 6, characterized in that: The top end of the connecting column (802) is fixedly installed with a telescopic rod (803), and a support rod (804) extends through the top end of the telescopic rod (803). The two ends of the support rod (804) are rotatably connected to a connecting frame (805).

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