Wear-resistant precision alloy drill bit

Abstract

The utility model relates to the technical field of drill bits, and provides a wear-resistant precision alloy drill bit which comprises a connector, one end of the connector is fixedly connected with an extension block, one end of the extension block is provided with an adjusting assembly, and the adjusting assembly comprises a connecting rod fixedly connected to one end of the extension block. A threaded rod is arranged on the outer surface of the connecting rod, and a drill bit body is arranged at one end of the connecting rod. A threaded rod is rotated to be separated from a threaded groove, at the moment, a drill bit body can be rotated to drive a transverse plate to rotate in an annular groove through a round rod until a second marking line is rotated to a first marking line on the other side, at the moment, the transverse plate can be rotated to a notch, and at the moment, the drill bit body can be pulled to drive the transverse plate to slide along the notch; and at the moment, the drill bit body can be maintained or replaced, so that the problem that the drill bit body cannot be conveniently and rapidly disassembled to be maintained or replaced is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits, and more specifically, to a wear-resistant precision alloy drill bit. Background Art

[0002] An alloy drill bit generally refers to a cemented carbide drill bit, which is divided into integral type, welded type, indexable insert type and replaceable head type. The main components of cemented carbide are tungsten carbide, cobalt, etc. It has a relatively high hardness and is suitable for batch processing and difficult and hard processing occasions.

[0003] The patent specification with the publication number CN217044736U discloses a wear-resistant precision alloy drill bit, which includes a connecting head and a drill bit body. The drill bit body is installed below the connecting head. The top of the drill bit body is fixedly connected with an installation block. An installation groove matching with the installation block is arranged inside the connecting head. A threaded sleeve is threadedly connected to the outside of the connecting head. The top of the threaded sleeve is rotatably connected with a fixing sleeve slidably connected to the connecting head. Two sliding plates are symmetrically and slidably connected inside the connecting head. Clamping blocks are fixedly connected to the middle parts of the two sliding plates. A clamping groove matching with the clamping block is arranged inside the installation block. The above device simplifies the operation steps through the structures such as the threaded sleeve, the fixing sleeve, the installation block, the clamping block and the clamping groove, facilitates the installation and disassembly of the drill bit body by people, reduces the operation time and improves the work efficiency.

[0004] However, it is found in the implementation of the related technology that the above technical solution has the following problems: The existing drill bit installation and disassembly steps in the above device are relatively cumbersome, not only taking a lot of time, but also requiring special tools for operation, and cannot well meet the usage needs of people. Therefore, further improvement is needed. Summary of the Utility Model

[0005] The utility model provides a wear-resistant precision alloy drill bit, which solves the problem in the related technology that it is not convenient to quickly disassemble the drill bit body for maintenance or replacement.

[0006] The technical solution of the utility model is as follows:

[0007] A wear-resistant precision alloy drill bit includes a connecting head. One end of the connecting head is fixedly connected with an extension block. An adjusting component is arranged at one end of the extension block. The adjusting component includes a connecting rod fixedly connected to one end of the extension block. A threaded rod is arranged on the outer surface of the connecting rod. One end of the connecting rod is provided with a drill bit body.

[0008] Preferably, a notch is opened at one end of the connecting rod. A first scale line is fixedly connected to the outer surface of the connecting rod. A through groove is opened on the outer surface of the connecting rod.

[0009] Preferably, a ring groove is formed on the inner wall of the bottom of the notch.

[0010] Preferably, the ring groove communicates with the through groove.

[0011] Preferably, a second marking line is fixedly connected to the outer surface of the drill bit body, and a round rod is fixedly connected to one end of the drill bit body.

[0012] Preferably, the second marking line corresponds to the first marking line, a cross plate is fixedly connected to one end of the round rod, and threaded grooves are formed on both sides of the cross plate.

[0013] Preferably, the cross plate is slidably connected to the notch, the cross plate is rotatably connected to the ring groove, and the threaded groove communicates with the through groove.

[0014] Preferably, the threaded rod passes through the inside of the through groove and is threadedly connected to the threaded groove.

[0015] The working principle and beneficial effects of the present utility model are as follows:

[0016] By rotating the threaded rod to separate it from the threaded groove, the drill bit body can be rotated at this time to drive the cross plate to rotate inside the ring groove through the round rod until the second marking line is rotated to the first marking line on the other side. At this time, the cross plate can be rotated to the notch, and then the drill bit body can be pulled to drive the cross plate to slide along the notch until the cross plate is separated from the notch. At this time, the drill bit body can be maintained or replaced, solving the problem that it is not convenient to quickly disassemble the drill bit body for maintenance or replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the connecting rod structure of the present utility model;

[0020] Figure 3 is a schematic diagram of the drill bit body structure of the present utility model.

[0021] In the figure: 1, connecting head; 2, extension block; 3, adjustment assembly; 31, threaded rod; 32, connecting rod; 321, notch; 3211, ring groove; 322, first marking line; 323, through groove; 33, drill bit body; 331, second marking line; 332, round rod; 3321, cross plate; 33211, threaded groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0023] As Figure 1 shown, this embodiment proposes a wear-resistant precision alloy drill bit, including a connection head 1. One end of the connection head 1 is fixedly connected with an extension block 2, and one end of the extension block 2 is provided with an adjustment assembly 3.

[0024] As Figure 1 shown, a threaded rod 31 is arranged on the outer surface of the connecting rod 32. The threaded rod 31 passes through the inside of the through groove 323 and is threadedly connected with the threaded groove 33211. The threaded rod 31 is used to fix the cross plate 3321 in the annular groove 3211, that is, to fixedly connect the connecting rod 32 and the drill bit body 33.

[0025] As Figure 2 shown, the adjustment assembly 3 includes a connecting rod 32 fixedly connected to one end of the extension block 2. A notch 321 is opened at one end of the connecting rod 32. A first scale line 322 is fixedly connected to the outer surface of the connecting rod 32. A through groove 323 is opened on the outer surface of the connecting rod 32. An annular groove 3211 is opened on the bottom inner wall of the notch 321. The annular groove 3211 communicates with the through groove 323. The existence of the annular groove 3211 facilitates the free rotation of the cross plate 3321 inside it, so that the threaded groove 33211 can face the through groove 323. The existence of the notch 321 facilitates the round rod 332 to enter the annular groove 3211 from the outside.

[0026] As Figure 3As shown, one end of the connecting rod 32 is provided with a drill bit body 33. A second marking line 331 is fixedly connected to the outer surface of the drill bit body 33. One end of the drill bit body 33 is fixedly connected to a round rod 332. The second marking line 331 corresponds to the first marking line 322. One end of the round rod 332 is fixedly connected to a cross plate 3321. Thread grooves 33211 are formed on both sides of the cross plate 3321. The cross plate 3321 is slidably connected to the notch 321 and rotatably connected to the annular groove 3211. The thread grooves 33211 communicate with the through grooves 323. The cross plate 3321 is a limit fixing block. When the cross plate 3321 is located in the annular groove 3211, the notch 321 is used to prevent the cross plate 3321 from detaching from the annular groove 3211. The threaded rod 31 is fixedly connected to the thread grooves 33211 to prevent the cross plate 3321 from rotating inside the annular groove 3211, that is, to prevent the drill bit body 33 from rotating when the connecting rod 32 is fixed. The second marking line 331 and the first marking line 322 are used to judge the position of the cross plate 3321 in the annular groove 3211 from the outside.

[0027] The working principle and usage instructions of the present utility model are as follows: When maintenance or replacement of the drill bit body 33 is required, first, the staff needs to rotate the threaded rod 31 to separate it from the thread grooves 33211. At this time, the drill bit body 33 can be rotated to drive the cross plate 3321 to rotate inside the annular groove 3211 through the round rod 332 until the second marking line 331 is rotated to the position of the first marking line 322 on the other side. At this time, the cross plate 3321 can be rotated to the notch 321. Then, the drill bit body 33 can be pulled to drive the cross plate 3321 to slide along the notch 321 until the cross plate 3321 is separated from the notch 321. At this time, the drill bit body 33 can be maintained or replaced.

[0028] The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A wear-resistant precision alloy drill bit, comprising a connector (1), one end of the connector (1) being fixedly connected to an extension block (2), one end of the extension block (2) being provided with an adjustment component (3), characterized in that: The adjustment assembly (3) comprises a connecting rod (32) fixedly connected to one end of the extension block (2), a threaded rod (31) being provided on the outer surface of the connecting rod (32), and a drill body (33) being provided at one end of the connecting rod (32).

2. The wear-resistant precision alloy drill according to claim 1, characterized in that: One end of the connecting rod (32) is provided with a notch (321), a first marking line (322) is fixedly connected to the outer surface of the connecting rod (32), and a through groove (323) is provided on the outer surface of the connecting rod (32).

3. The wear-resistant precision alloy drill according to claim 2, characterized in that: An annular groove (3211) is provided on the inner wall of the bottom of the notch (321).

4. The wear-resistant precision alloy drill according to claim 3, characterized in that: The annular groove (3211) is communicated with the through groove (323).

5. The wear-resistant precision alloy drill according to claim 1, characterized in that: A second marking line (331) is fixedly connected to the outer surface of the drill body (33), and a round rod (332) is fixedly connected to one end of the drill body (33).

6. The wear-resistant precision alloy drill according to claim 5, characterized in that: The second marking line (331) corresponds to the first marking line (322); one end of the round rod (332) is fixedly connected to a horizontal plate (3321); and thread grooves (33211) are provided on both sides of the horizontal plate (3321).

7. The wear-resistant precision alloy drill according to claim 6, characterized in that: The transverse plate (3321) is slidably connected to the notch (321), the transverse plate (3321) is rotatably connected to the annular groove (3211), and the thread groove (33211) is in communication with the through groove (323).

8. The wear-resistant precision alloy drill according to claim 1, characterized in that: The threaded rod (31) passes through the interior of the through groove (323) and is connected to the thread groove (33211) via threads.

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