CN209811310U - Detachable drill bit - Google Patents

Abstract

The utility model discloses a detachable drill bit, comprising a threaded rod, the lower end of the threaded rod is fixedly connected with the drill bit connecting rod, the drill bit connecting rod is detachably connected with the drill bit, the upper end of the threaded rod is fixedly connected with the connecting rod, The connecting rod is detachably connected to the connecting neck through a pin, and the connecting neck is fixedly connected to the mounting rod, and the mounting rod is provided with a mounting groove. The drill bit detachable connection composed of the first connecting block, the connecting groove and the connecting column and the second connecting block, the drilling groove, the connecting protrusion, the connecting cylinder and the connecting hole are adopted, and the connecting rod and the connecting The neck is slidingly connected by a pin. When the drill bit or the screw rod is damaged, replace the damaged part, and then continue to use the drill bit, which effectively solves the problem that the front end of the drill bit and the screw thread part of the drill bit in the traditional technology are due to hard substances. And the problem of wear and tear has to replace the entire drill bit as a last resort.

Description

A detachable drill bit

technical field

The utility model relates to the technical field of drill equipment, in particular to a detachable drill.

Background technique

An electric drill is a drilling tool that uses electricity as power. It is a conventional product in electric tools, and it is also the most demanded electric tool product. The working principle of the electric drill is that the motor rotor of the electromagnetic rotary or electromagnetic reciprocating small-capacity motor performs magnetic field cutting and works, drives the working device through the transmission mechanism, and drives the gear to increase the power of the drill bit, so that the drill bit scrapes the surface of the object and penetrates the object better. . When the drill bit is working, due to the uncertainty of the composition of the drilled object, the front end of the drill bit and the threaded part of the screw rod may be worn due to hard substances, which will affect the drilling effect. If one of them fails, the entire drill must be replaced. This will waste other good parts, resulting in higher drilling costs. For this problem, it is necessary to propose a detachable drill bit.

Utility model content

The purpose of this utility model is to solve the problem that the front end drill tooth part of the drill bit and the thread part of the screw rod may be worn due to hard substances in the traditional technology, and the whole drill bit has to be replaced, and a detachable drill bit is proposed.

In order to achieve the above object, the utility model adopts the following technical solutions:

A detachable drill bit, including a screw rod, the lower end of the screw rod is fixedly connected with the drill bit connecting rod, the drill bit connecting rod is detachably connected with the drill bit, and the connection between the drill bit connecting rod and the drill bit is provided with an inwardly recessed rectangular groove, the rectangular groove is chamfered at an acute angle, the lower end of the drill bit is provided with a drilling groove, the upper end of the screw rod is fixedly connected with the connecting rod, the connecting rod is slidably connected with the connecting neck, and the connecting rod is slidably connected with the pin Connection, the pin is slidingly connected to the connecting neck, the side of the connecting neck is provided with an arc edge, the connecting neck is fixedly connected to the mounting rod, and the mounting rod is provided with mounting grooves on both sides.

Preferably, the drill connecting rod is composed of a first connecting block, a connecting groove and a connecting column, a connecting column is provided at the middle of the lower end of the first connecting block, a connecting groove is provided at the lower end of the first connecting block, and the The first connection block is fixedly connected with the screw rod.

Preferably, the drill bit is composed of a second connecting block, a drilling groove, a connecting protrusion, a connecting cylinder, and a connecting hole, and four symmetrically distributed connecting protrusions are arranged on the upper end of the second connecting block.

Preferably, the middle position of the upper end of the second connecting block is fixedly connected with a connecting cylinder, a connecting hole is provided inside the connecting cylinder, and a drilling groove is provided at the lower end of the second connecting block.

Preferably, the shape of the connection hole is the same as that of the connection post, the shape of the connection protrusion is the same as that of the connection groove, and the shape of the connection protrusion and the connection groove are the same for interference fit connection.

Preferably, a connecting projection is provided at the upper end of the connecting rod, a pin hole is provided in the middle of the connecting projection, and a pin hole is provided in the middle of the connecting neck.

Compared with the prior art, the utility model has the following advantages:

The drill bit detachable connection composed of the first connecting block, the connecting groove and the connecting column and the second connecting block, the drilling groove, the connecting protrusion, the connecting cylinder and the connecting hole are adopted, and the connecting rod and the connecting The neck is slidingly connected by a pin. When the drill bit or the screw rod is damaged, replace the damaged part, and then continue to use the drill bit, which effectively solves the problem that the front end of the drill bit and the screw thread part of the drill bit in the traditional technology are due to hard substances. And the problem of wear and tear has to replace the entire drill bit as a last resort.

Description of drawings

Fig. 1 is the structural representation of a kind of detachable drill bit that the utility model proposes;

Fig. 2 is the front view of the drill connecting rod of a detachable drill proposed by the utility model;

Fig. 3 is a side view of a drill connecting rod of a detachable drill proposed by the utility model;

Fig. 4 is a drill bit front view of a detachable drill bit proposed by the utility model;

Fig. 5 is a drill bit side view of a detachable drill bit proposed by the utility model;

Fig. 6 is a front view of a connecting rod of a detachable drill proposed by the utility model;

Fig. 7 is a side view of a connecting rod of a detachable drill proposed by the utility model;

Fig. 8 is a front view of the connecting neck of a detachable drill proposed by the utility model;

Fig. 9 is a side view of the connecting neck of a detachable drill proposed by the utility model.

In the figure: 1 screw rod, 2 drill bit connecting rod, 21 first connecting block, 22 connecting groove, 23 connecting column, 3 drill bit, 31 second connecting block, 32 drilling groove, 33 connecting protrusion, 34 connecting cylinder, 35 connecting holes, 4 connecting rods, 5 connecting necks, 6 mounting rods, 7 rectangular grooves, 8 arc edges, 9 mounting grooves, 10 pins, 11 connecting projections, 12 pin holes.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Referring to Figures 1 to 9, a detachable drill bit includes a screw rod 1, the lower end of the screw rod 1 is fixedly connected to the drill bit connecting rod 2, the drill bit connecting rod 2 is detachably connected to the drill bit 3, and the drill bit connecting rod 2 is connected to the drill bit 3 There is an inwardly recessed rectangular groove 7, the rectangular groove 7 is chamfered at an acute angle, the lower end of the drill bit 3 is provided with a drilling groove 32, the upper end of the screw rod 1 is fixedly connected with the connecting rod 4, and the thread length on the screw rod 1 is slightly less than Rod length, connecting rod 4 is slidingly connected with connecting neck 5, connecting rod 4 is slidingly connected with pin 10, pin 10 is slidingly connected with connecting neck 5, the side of connecting neck 5 is provided with arc edge 8, connecting neck 5 is fixedly connected with mounting rod 6 , the mounting rod 6 is provided with mounting grooves 9 on the front and rear sides;

Referring to 2 and 3, the drill connecting rod 2 is composed of a first connecting block 21, a connecting groove 22 and a connecting column 23, the middle position of the lower end of the first connecting block 21 is provided with a connecting column 23, and the lower end of the first connecting block 21 is provided with a connecting groove 22, the first connecting block 21 is fixedly connected with the screw rod 1;

Referring to 4 and 5, the drill bit 3 is composed of a second connection block 31, a drilling groove 32, a connection protrusion 33, a connection cylinder 34, and a connection hole 35. The upper end of the second connection block 31 is provided with four symmetrically distributed connection protrusions 33, the middle position of the upper end of the second connecting block 31 is fixedly connected with a connecting cylinder 34, the connecting cylinder 34 is provided with a connecting hole 35, and the lower end of the second connecting block 31 is provided with a drilling groove 32;

With reference to 4 and 5, the shape of the connection hole 35 is the same as that of the connection post 23, the connection protrusion 33 is the same shape as the connection groove 22, and the connection protrusion 33 is the same interference fit connection as the connection groove 22;

Referring to 6 and 7, the upper end of the connecting rod 4 is provided with a connecting lug 11, the middle of the connecting lug 11 is provided with a pin hole 12, and the middle position of the connecting neck 5 is provided with a pin hole 12.

Now the operating principle of the utility model is described as follows:

When the utility model is used, the installation groove 9 on the installation rod 6 is connected with the electric drill, and the drilling work is carried out by the drill teeth on the screw rod 1 and the drill bit 3, but the screw rod 1 or the drill bit 3 are due to hard substances. When wear and tear needs to be replaced, extract the pin 10 in the pin hole 12 of the connecting rod 4 and the connecting neck 5, the screw rod 3 and the mounting rod 6 can be separated, and the drill bit 3 is composed of the second connecting block 31, the drilling groove 32, the connecting convex 33, connecting cylinder 34, connecting hole 35 are formed, drill bit connecting rod 2 is made up of first connecting block 21, connecting groove 22 and connecting post 23, the shape of connecting hole 35 is identical with connecting post 23 shapes, and connecting protrusion 33 is connected with connecting post 23. The connecting groove 22 has the same shape, and the connecting protrusion 33 is connected with the same shape as the connecting groove 22 with an interference fit. The drill bit 3 is removed from the drill bit connecting rod 2, and the screw rod 1 or the drill bit 3 can be replaced.

In this utility model, unless otherwise clearly specified and limited, terms such as "sliding", "rotating", "fixed", and "equipped" should be understood in a broad sense, for example, it can be a welded connection or a bolt Connected, or integrated; may be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediary, and may be an internal communication between two elements or an interactive relationship between two elements, unless otherwise stated Clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (6)

1. A detachable drill bit, comprising a screw rod (1), is characterized in that, the lower end of the screw rod (1) is fixedly connected with the drill bit connecting rod (2), and the drill bit connecting rod (2) is connected with the drill bit (3) ) is detachably connected, the connection between the drill bit connecting rod (2) and the drill bit (3) is provided with an inwardly recessed rectangular groove (7), the rectangular groove (7) is chamfered at an acute angle, and the drill bit (3) is lowered The bottom end is provided with a drilling groove (32), the upper end of the screw rod (1) is fixedly connected with the connecting rod (4), the connecting rod (4) is slidingly connected with the connecting neck (5), and the connecting rod (4) ) is slidingly connected with the pin (10), the pin (10) is slidingly connected with the connecting neck (5), the side of the connecting neck (5) is provided with an arc edge (8), and the connecting neck (5) is connected with the mounting rod (6) Fixedly connected, the mounting rod (6) is provided with mounting grooves (9) on the front and rear sides. 2. A detachable drill bit according to claim 1, characterized in that the drill bit connecting rod (2) consists of a first connecting block (21), a connecting groove (22) and a connecting column (23), The middle position of the lower end of the first connecting block (21) is provided with a connecting column (23), the lower end of the first connecting block (21) is provided with a connecting groove (22), and the first connecting block (21) and the screw The rod (1) is fixedly connected. 3. A detachable drill bit according to claim 1, characterized in that, the drill bit (3) is connected by a second connecting block (31), a drilling groove (32), a connecting protrusion (33), and The second connecting block (31) is provided with four symmetrically distributed connecting protrusions (33) on the upper end. 4. A detachable drill bit according to claim 3, characterized in that, a connecting cylinder (34) is fixedly connected to the middle position of the upper end of the second connecting block (31), and the connecting cylinder (34) is provided with a There is a connection hole (35), and the lower end of the second connection block (31) is provided with a drilling groove (32). 5. A detachable drill bit according to claim 4, characterized in that, the shape of the connecting hole (35) is the same as that of the connecting post (23), and the connecting protrusion (33) and the connecting groove (22) have the same shape, and the connection protrusion (33) is connected with the connection groove (22) with the same shape and interference fit. 6. A detachable drill bit according to claim 1, characterized in that, the upper end of the connecting rod (4) is provided with a connecting lug (11), and the middle of the connecting lug (11) is provided with a pin hole (12), the middle position of the connecting neck (5) is provided with a pin hole (12).