Self-locking type high-precision alloy drill bit

Abstract

The utility model relates to the technical field of alloy drill bits, and provides a self-locking type high-precision alloy drill bit which comprises a drill bit body, a positioning clamping groove is formed in the drill bit body, a limiting mechanism is installed on the outer wall of the drill bit body, and the limiting mechanism comprises a drilling machine connector installed on the outer wall of the drill bit body. A threaded groove is formed in the drilling machine connector, a threaded column is installed in the drilling machine connector, an annular protruding block is fixedly connected to the inner wall of the threaded column, and a limiting elastic piece is fixedly connected to the interior of the drilling machine connector. The drill bit main body is moved to be inserted into the drilling machine connector, the four positioning clamping grooves correspond to the four positioning clamping blocks in position, the rotating block is rotated, the threaded column rotates, the annular protruding block fixedly connected with the inner wall of the threaded column extrudes the four protruding inclined plates, and the drill bit main body is inserted into the drilling machine connector. And the four positioning clamping blocks are clamped into the four positioning clamping grooves for limiting, so that the drill bit main body and the drilling machine connector are stably mounted and connected.

Description

Technical Field

[0001] This utility model relates to the field of alloy drill bit technology, and in particular to a self-locking high-precision alloy drill bit. Background Technology

[0002] Alloy drill bits are tools used for drilling, typically consisting of a drill body and a cutting part. The cutting part or the entire drill is made of alloy material to improve the drill bit's hardness, wear resistance, heat resistance, and cutting performance. Drill bits are often mounted on connectors at the end of drilling rigs. In the machinery manufacturing industry, alloy drill bits are widely used for drilling various metal parts, such as automobile engine blocks and mounting holes for mechanical parts.

[0003] To this end, patent CN217166636U discloses a machining drill bit that is easy to install, including a drill bit 1, a connector 2, a connector 3, and a connecting mechanism 4. The connecting mechanism 4 includes a gear 401, a limiting groove 402, a rotating seat 403, a screw 404, a limiting block 405, and a handwheel 406. This utility model, by setting the connecting mechanism 4, allows the connector 2 to be inserted upwards along the inner wall of the connector 3. Simultaneously, the gear 401 meshes with the toothed block inside the limiting groove 402, causing the gear 401 to rotate in a limited position. When the connector 2 is inserted into the inner top of the connector 3, rotating the handwheel 406 drives the screw 404 to rotate, causing the screw 404 to move in a limited position along the inner wall of the rotating seat 403. At the same time, the screw 404 drives the limiting block 405 to move to the top of the gear 401, so that the bottom end of the limiting block 405 locks and fixes the gear 401, thereby achieving quick installation and fixation of the drill bit 1.

[0004] Existing high-precision alloy drill bits use gears and gear blocks for positioning and installation. However, the gears are controlled by a screw. Since the screw has a certain length, the entire connector is irregularly shaped, causing the center of gravity to be different when the drill bit and connector rotate synchronously. This results in poor stability of the installation between the drill bit and connector, affecting the use of the drill bit. Utility Model Content

[0005] The purpose of this invention is to provide a self-locking high-precision alloy drill bit to solve the problem that existing high-precision alloy drill bits are inconvenient for stable installation of the drill bit and connecting parts.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a self-locking high-precision alloy drill bit, including a drill bit body;

[0007] The drill bit body has a positioning slot inside, and a limit mechanism is installed on the outer wall of the drill bit body;

[0008] The limiting mechanism includes a drill rig connector installed on the outer wall of the drill bit body. The drill rig connector has a threaded groove inside and a threaded post installed inside. An annular protrusion is fixedly connected to the inner wall of the threaded post, and a limiting spring is fixedly connected inside the drill rig connector.

[0009] Preferably, a rotating block is fixedly connected to the bottom of the threaded column, a convex inclined plate is fixedly connected to the outer wall of the limiting spring, and a positioning block is fixedly connected to the inner wall of the convex inclined plate.

[0010] Preferably, the drill rig connector is threadedly connected to the threaded post via a threaded groove, and the rotating block forms a rotating structure with the drill rig connector via the threaded post. The threaded groove and the threaded post are adapted to each other, and the threaded post is a hollow design.

[0011] Preferably, the limiting springs are arranged in a ring around the central axis of the drill rig connector, and the threaded post is sleeved on the outside of the limiting springs.

[0012] Preferably, the annular protrusion is movably connected to the convex inclined plate, and the drill bit body is engaged with the positioning block through a positioning slot.

[0013] Preferably, a locking mechanism is fixedly connected to the outer wall of the drilling rig connector. The locking mechanism includes a baffle fixedly installed on the outer wall of the drilling rig connector. An annular spring plate is fixedly connected to the bottom of the baffle, and an anti-slip pad is fixedly connected to the bottom of the annular spring plate.

[0014] Preferably, the baffle is arranged in a ring shape, and the ring spring sheet is located between the baffle and the rotating block.

[0015] The self-locking high-precision alloy drill bit provided by this utility model has the following advantages:

[0016] By using the drill bit body, positioning slots, and limiting mechanism, the drill bit body is moved and inserted into the drill rig connector, with the four positioning slots corresponding to the four positioning blocks. Rotating the rotating block causes the threaded column to rotate. Since the threaded column is threadedly connected to the drill rig connector through the threaded slots, it can move upwards along the threaded slots. This causes the annular protrusion fixedly connected to the inner wall of the threaded column to press against the four convex inclined plates, which in turn causes the four limiting springs to deform inwards. This allows the four positioning blocks to engage in the four positioning slots for limiting, ensuring a stable installation and connection between the drill bit body and the drill rig connector, making the drill bit more stable and precise during use.

[0017] The drill bit body, drill rig connector, rotating block, and locking mechanism are designed so that the rotating block can rotate and move upward along the threaded groove after the threaded column rotates. This causes the top of the rotating block to press against the annular spring plate. Under the obstruction of the baffle, the annular spring plate can deform and apply pressure to the rotating block. At the same time, the anti-slip pad prevents the rotating block from loosening, thus locking the drill bit body and drill rig connector together and further improving the stability of the installation connection between the drill bit body and the drill rig connector. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional sectional view of the drilling rig connector of this utility model;

[0020] Figure 3 This is a structural breakdown diagram of the present invention;

[0021] Figure 4 This is a perspective view of the drill bit body of this utility model;

[0022] Figure 5 This is a perspective view of the annular spring sheet of this utility model.

[0023] The following are the annotations in the figure: 1. Drill bit body; 2. Positioning slot; 3. Limiting mechanism; 31. Drill rig connector; 32. Threaded groove; 33. Threaded post; 34. Rotary block; 35. Annular protrusion; 36. Limiting spring; 37. Convex inclined plate; 38. Positioning block; 4. Locking mechanism; 41. Baffle; 42. Annular spring sheet; 43. Anti-slip pad. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-5 The present invention provides a self-locking high-precision alloy drill bit, comprising a drill bit body 1.

[0026] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the drill bit body 1 has a positioning slot 2 inside, and a limiting mechanism 3 is installed on the outer wall of the drill bit body 1. The limiting mechanism 3 includes a drill rig connector 31 installed on the outer wall of the drill bit body 1. The drill rig connector 31 has a threaded groove 32 inside, and a threaded post 33 is installed inside the drill rig connector 31. An annular protrusion 35 is fixedly connected to the inner wall of the threaded post 33. A limiting spring 36 is fixedly connected inside the drill rig connector 31. A rotating block 34 is fixedly connected to the bottom of the threaded post 33. A convex inclined plate 37 is fixedly connected to the outer wall of the limiting spring 36. The inner wall of plate 37 is fixedly connected with positioning block 38. Drill rig connector 31 is threadedly connected to threaded post 33 through threaded groove 32. Rotary block 34 forms a rotating structure with drill rig connector 31 through threaded post 33. Threaded groove 32 and threaded post 33 are adapted to each other. Threaded post 33 is hollow. Limiting spring 36 is arranged in a ring around the central axis of drill rig connector 31. Threaded post 33 is sleeved on the outside of limiting spring 36. Annular protrusion 35 is movably connected to convex inclined plate 37. Drill bit body 1 is engaged with positioning block 38 through positioning groove 2.

[0027] By moving the drill bit body 1, it is inserted into the drill rig connector 31, and the four positioning slots 2 correspond to the four positioning blocks 38. Rotating the rotating block 34 causes the threaded column 33 to rotate. Since the threaded column 33 is threadedly connected to the drill rig connector 31 through the threaded groove 32, the threaded column 33 can move upward along the threaded groove 32, causing the annular protrusion 35 fixedly connected to the inner wall of the threaded column 33 to press against the four convex inclined plates 37, causing the four limiting spring pieces 36 to deform inward, so that the four positioning blocks 38 are locked into the four positioning slots 2 for limiting, and the drill bit body 1 and the drill rig connector 31 are stably installed and connected.

[0028] Reference Figure 1 and Figure 5 As shown, a locking mechanism 4 is fixedly connected to the outer wall of the drill rig connector 31. The locking mechanism 4 includes a baffle 41 fixedly installed on the outer wall of the drill rig connector 31. An annular spring plate 42 is fixedly connected to the bottom of the baffle 41. An anti-slip pad 43 is fixedly connected to the bottom of the annular spring plate 42. The baffle 41 is annularly arranged, and the annular spring plate 42 is located between the baffle 41 and the rotating block 34.

[0029] After the threaded column 33 rotates, it moves upward along the threaded groove 32, which can cause the rotating block 34 to rotate and move upward. This causes the top of the rotating block 34 to press against the annular spring plate 42. Under the obstruction of the baffle 41, the annular spring plate 42 can deform and apply pressure to the rotating block 34. At the same time, under the anti-slip action of the anti-slip pad 43, the rotating block 34 can be prevented from loosening, so that the drill bit body 1 and the drill rig connector 31 are locked together, which further improves the stability of the installation connection between the drill bit body 1 and the drill rig connector 31.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-locking high-precision alloy drill bit, comprising a drill bit body (1); Its features are: The drill bit body (1) has a positioning slot (2) inside, and a limit mechanism (3) is installed on the outer wall of the drill bit body (1). The limiting mechanism (3) includes a drill connector (31) installed on the outer wall of the drill bit body (1). The drill connector (31) has a threaded groove (32) inside. A threaded column (33) is installed inside the drill connector (31). An annular protrusion (35) is fixedly connected to the inner wall of the threaded column (33). A limiting spring (36) is fixedly connected inside the drill connector (31).

2. The self-locking high-precision alloy drill bit according to claim 1, characterized in that: The bottom of the threaded column (33) is fixedly connected to a rotating block (34), the outer wall of the limiting spring (36) is fixedly connected to a convex inclined plate (37), and the inner wall of the convex inclined plate (37) is fixedly connected to a positioning block (38).

3. The self-locking high-precision alloy drill bit according to claim 2, characterized in that: The drill rig connector (31) is threadedly connected to the threaded column (33) through the threaded groove (32). The rotating block (34) forms a rotating structure with the drill rig connector (31) through the threaded column (33). The threaded groove (32) and the threaded column (33) are adapted to each other. The threaded column (33) is a hollow design.

4. The self-locking high-precision alloy drill bit according to claim 1, characterized in that: The limiting springs (36) are arranged in a ring around the central axis of the drill rig connector (31), and the threaded post (33) is sleeved on the outside of the limiting springs (36).

5. A self-locking high-precision alloy drill bit according to claim 1, characterized in that: The annular protrusion (35) is movably connected to the convex inclined plate (37), and the drill bit body (1) is engaged with the positioning block (38) through the positioning slot (2).

6. A self-locking high-precision alloy drill bit according to claim 1, characterized in that: The outer wall of the drill connector (31) is fixedly connected to a locking mechanism (4). The locking mechanism (4) includes a baffle (41) fixedly installed on the outer wall of the drill connector (31). The bottom of the baffle (41) is fixedly connected to an annular spring plate (42), and the bottom of the annular spring plate (42) is fixedly connected to an anti-slip pad (43).

7. A self-locking high-precision alloy drill bit according to claim 6, characterized in that: The baffle (41) is arranged in a ring shape, and the ring spring sheet (42) is located between the baffle (41) and the rotating block (34).

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