Drill bit

Abstract

The utility model provides a drill bit, and belongs to the technical field of cutters. The problem that resources are wasted due to the fact that a tool bit of an existing drill bit needs to be integrally replaced after being abraded is solved. The drill bit comprises a tool bit and a tool apron for installing the tool bit, the tail end of the tool bit extends to form a tool body, two positioning grooves which are not communicated with each other are symmetrically formed in the tail end of the tool body, a positioning table protruding outwards is formed at the bottom end of the tool body through the two positioning grooves, an open groove is transversely formed in the positioning table in a penetrating mode, and a hollow inner threaded shaft is assembled in the open groove. A mounting groove for mounting the positioning table is formed in the top of the tool apron, and a threaded hole communicated with the internal threaded shaft is formed in the peripheral wall of the tool apron in a penetrating mode. The tool bit has the advantages that the worn tool bit can be conveniently and independently replaced, and waste of tool industry resources is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutters and relates to a drill bit. Background Art

[0002] Currently, most drill tools on the market are one-piece. After long-term work, they will wear out and need to be replaced as a whole. However, the worn part is usually the cutter head, and the cutter body will not be damaged. However, after the cutter head is worn, the entire tool needs to be replaced, resulting in a waste of resources. Summary of the invention

[0003] The utility model aims to provide a drill bit with a separately replaceable cutter head in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a drill bit, characterized in that it includes a cutter head and a cutter seat for mounting the cutter head, a cutter body extending from the end of the cutter head, two mutually unconnected positioning grooves symmetrically provided at the end of the cutter body, a positioning platform protruding outward is formed at the bottom end of the cutter body through the two positioning grooves, a slot is transversely penetrated on the positioning platform, and a hollow internal threaded shaft is assembled in the slot, a mounting groove for mounting the positioning platform is provided on the top of the cutter seat, and a threaded hole connected to the internal threaded shaft is penetrated through the peripheral wall of the cutter seat.

[0005] In the above-mentioned drill bit, the internal threaded shaft and the threaded hole are fixed by screws.

[0006] In the above-mentioned drill bit, the outer wall of the tool holder is provided with a process groove.

[0007] Compared with the prior art, the drill bit has the advantages of being easy to replace worn cutter heads individually and reducing the waste of cutter industry resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is an exploded perspective view of the drill.

[0009] Figure 2 It is a three-dimensional diagram of the knife body.

[0010] In the figure, 1, cutter head; 2, cutter seat; 3, cutter body; 4, positioning groove; 5, positioning platform; 6, internal threaded shaft; 7, mounting groove; 8, threaded hole; 9, process groove. DETAILED DESCRIPTION

[0011] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0012] like Figure 1 , Figure 2As shown, the drill bit comprises a cutter head 1 and a cutter seat 2 for mounting the cutter head 1, a cutter body 3 is extended from the end of the cutter head 1, two mutually unconnected positioning grooves 4 are symmetrically provided at the end of the cutter body 3, a positioning platform 5 protruding outward is formed at the bottom of the cutter body 3 through the two positioning grooves 4, a slot is transversely penetrated through the positioning platform 5, and a hollow internal threaded shaft 6 is assembled in the slot, a mounting groove 7 for mounting the positioning platform 5 is provided at the top of the cutter seat 2, and a threaded hole 8 connected to the internal threaded shaft 6 is penetrated through the peripheral wall of the cutter seat 2.

[0013] To elaborate further, the internal threaded shaft 6 and the threaded hole 8 are fixed by screws. When the worn cutter head 1 needs to be replaced, the screws are removed, the cutter head 1 is separated from the cutter seat 2, and the cutter head 1 is replaced; radial positioning is achieved through the positioning table 5 to prevent the cutter head 1 from radial deviation.

[0014] To be more specific, the outer wall of the tool holder 2 is provided with a process groove 9 for clamping the corresponding mold.

[0015] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0016] Although the terminology such as cutter head 1, cutter seat 2, cutter body 3, positioning groove 4, positioning platform 5, internal threaded shaft 6, mounting groove 7, threaded hole 8, process groove 9 is used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model; interpreting them as any additional limitation is contrary to the spirit of the utility model.

Claims

1. A drill bit, characterized in that: The present invention comprises a cutter head (1) and a cutter seat (2) for mounting the cutter head (1), wherein a cutter body (3) is extended from the end of the cutter head (1), and two mutually unconnected positioning grooves (4) are symmetrically provided at the end of the cutter body (3), and a positioning platform (5) protruding outward is formed at the bottom end of the cutter body (3) through the two positioning grooves (4), and a slot is transversely penetrated on the positioning platform (5), and a hollow internal threaded shaft (6) is installed in the slot, and a mounting groove (7) for mounting the positioning platform (5) is provided at the top of the cutter seat (2), and a threaded hole (8) communicating with the internal threaded shaft (6) is penetrated through the peripheral wall of the cutter seat (2).

2. A drill bit according to claim 1, characterized in that: The internal threaded shaft (6) and the threaded hole (8) are fixed by means of screws.

3. A drill bit according to claim 1, characterized in that: The outer wall of the knife seat (2) is provided with a process groove (9).

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