Detachable and replaceable drill bit

Abstract

The utility model discloses a detachable and replaceable drill bit which comprises a drill rod and a drill bit body. One end of the drill rod is provided with a connecting part, the connecting part is sleeved with a locking piece, a spring and a locking ring, the locking piece and the spring are limited through the locking ring, the end face of the connecting part is provided with a limiting hole, and the outer wall of the locking piece is provided with two protruding blocks; a connecting groove is formed in the end face of the drill bit, a protruding limiting block is arranged at the bottom of the connecting groove, an annular groove is formed in the side wall of the connecting groove, two guide grooves are formed from the annular groove to the end face of the drill bit, and two limiting grooves extending towards the connecting groove are formed in the annular groove. The locking piece, the spring and the locking ring are arranged on the drill rod, the locking piece is matched with the limiting groove in the connecting groove of the drill bit to achieve the locking function, the locking piece rotates to be disengaged from the limiting groove, namely the drill rod is separated from the drill bit, and therefore the convenience of quick disassembly and quick assembly can be achieved, one drill rod can be matched with a plurality of drill bits, and the drilling efficiency is improved. The space of the storage box is saved, the overall weight is reduced, and carrying is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill bits, and in particular relates to a detachable and replaceable drill bit. Background Art

[0002] Countersink drills are used in woodworking. The countersink drills include a drill rod and a drill bit. The two parts are integrated. Different sizes of countersink drills need to be replaced to drill different countersunk holes. Storing multiple countersink drills will take up space in a storage box. The drill rod of the countersink drill will also increase the weight of the storage box, making it more difficult to carry. Moreover, the drill bit will be discarded as a whole after it is worn, which will cause unnecessary waste. In order to solve this problem, a detachable and replaceable drill bit is provided. Utility Model Content

[0003] In view of this, the technical problem to be solved by the utility model is to provide a detachable and replaceable drill bit, which solves the problem in the prior art that the drill rod and the drill bit cannot be detached and replaced.

[0004] In order to solve the above technical problems, the utility model discloses a detachable and replaceable drill bit, comprising: a drill rod and a drill bit; one end of the drill rod is provided with a connecting part, the diameter of the connecting part is smaller than the diameter of the drill rod, a locking piece, a spring and a locking ring are sleeved on the connecting part, the locking piece and the spring are limited by the locking ring, the locking ring is threadedly connected to the end of the connecting part, the end face of the connecting part is provided with a polygonal limiting hole, and the outer wall of the locking piece is provided with two protrusions; one end of the drill bit is a multi-blade sharp angle head, and the other end face is provided with a connecting groove, the bottom of the connecting groove is provided with a raised polygonal limiting block, the side wall of the connecting groove is provided with an annular groove, two guide grooves are provided from the annular groove to the end face of the drill bit, and the annular groove is provided with two limiting grooves extending to the connecting groove.

[0005] Furthermore, the position angle between the guide groove and the limiting groove ranges from 20° to 90°.

[0006] Furthermore, the above-mentioned limiting hole is hexagonal.

[0007] Furthermore, one end of the drill bit is a five-edged sharp-angle head.

[0008] Compared with the prior art, the present application can obtain the following technical effects:

[0009] The utility model provides a locking piece, a spring and a locking ring on the drill rod, and the locking piece cooperates with the limiting groove in the connecting groove of the drill bit to realize the locking function. When the locking piece is rotated to disengage from the cooperation with the limiting groove, the drill rod and the drill bit are separated, so that the convenience of quick disassembly and assembly can be achieved. One drill rod can be equipped with multiple drill bits, which saves the space of the storage box and reduces the overall weight, making it more convenient to carry.

[0010] Of course, any product implementing this application does not necessarily need to achieve all of the technical effects described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0012] Figure 1 It is a cross-sectional schematic diagram of a countersunk drill according to one embodiment of the utility model;

[0013] Figure 2 It is a schematic diagram of the separation of the drill rod and the drill bit according to one embodiment of the utility model;

[0014] Figure 3 It is a schematic diagram of a drill rod according to one embodiment of the utility model.

[0015] Figure ID

[0016] Drill rod 1, drill bit 2, connecting part 3, locking piece 4, spring 5, locking ring 6, limiting hole 7, protrusion 8, connecting groove 9, limiting block 10, annular groove 11, guide groove 12, limiting groove 13. DETAILED DESCRIPTION

[0017] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0018] Please refer to Figures 1 to 3 , Figure 1 It is a cross-sectional schematic diagram of a countersunk drill according to one embodiment of the utility model; Figure 2 It is a schematic diagram of the separation of the drill rod and the drill bit according to one embodiment of the utility model; Figure 3 It is a schematic diagram of a drill rod according to one embodiment of the utility model.

[0019] A detachable and replaceable drill bit, comprising: a drill rod 1 and a drill bit 2; one end of the drill rod 1 is provided with a connecting portion 3, the diameter of the connecting portion 3 is smaller than the diameter of the drill rod 1, a locking piece 4, a spring 5 and a locking ring 6 are sleeved on the connecting portion 3, the locking piece 4 and the spring 5 are limited by the locking ring 6, the locking ring 6 is threadedly connected to the end of the connecting portion 3, the end face of the connecting portion 3 is provided with a hexagonal limiting hole 7, and the outer wall of the locking piece 4 is provided with two protrusions 8; one end of the drill bit 2 is a five-edged sharp angle head, the other end face is provided with a connecting groove 9, the bottom of the connecting groove 9 is provided with a raised hexagonal limiting block 10, the side wall of the connecting groove 9 is provided with an annular groove 11, two guide grooves 12 are provided from the annular groove 11 to the end face of the drill bit 2, the annular groove 11 is provided with two limiting grooves 13 extending to the connecting groove 9, and the position angle between the guide groove 12 and the limiting groove 13 is 90°.

[0020] Installation process: The locking piece 4 and the spring 5 are sequentially sleeved on the connecting part 3 of the drill rod 1, and the locking ring 6 is threadedly connected to the connecting part 3. Then, the connecting part 3 of the drill rod 1 is inserted into the connecting groove 9 of the drill bit 2, and the limiting block 10 is plugged into the limiting hole 7. The locking piece 4 is pressed down, and the protrusion 8 on the side wall of the locking piece 4 enters the annular groove 11 along the guide groove 12. Then, the locking piece 4 is rotated so that the protrusion 8 of the locking piece 4 cooperates with the limiting groove 13. The spring 5 plays the role of lifting the locking piece 4 to prevent it from shifting and disengaging from the limiting groove 13. The locking of the drill rod 1 and the drill bit 2 is completed. To disengage the drill rod 1 and the drill bit 2, you only need to press the locking piece 4 and rotate it to the guide groove 12. The spring 5 will push out the locking piece 4, and the two will be disengaged.

[0021] In summary, the utility model provides a locking member 4, a spring 5 and a locking ring 6 on the drill rod 1. The locking member 4 cooperates with the limiting groove 13 in the connecting groove 9 of the drill bit 2 to realize the locking function. The locking member 4 is rotated to disengage from the limiting groove 13, and the drill rod 1 and the drill bit 2 are separated. In this way, the convenience of quick disassembly and assembly can be achieved. One drill rod 1 can be equipped with multiple drill bits 2, saving space in the storage box and reducing the overall weight, making it more convenient to carry.

[0022] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A detachable and replaceable drill bit, comprising: Drill rods and drill bits; It is characterized in that one end of the drill rod is provided with a connecting part, the diameter of the connecting part is smaller than the diameter of the drill rod, a locking piece, a spring and a locking ring are sleeved on the connecting part, the locking piece and the spring are limited by the locking ring, the locking ring is threadedly connected to the end of the connecting part, the end face of the connecting part is provided with a polygonal limiting hole, and the outer wall of the locking piece is provided with two protrusions; one end of the drill bit is a multi-blade sharp angle head, and the other end face is provided with a connecting groove, the bottom of the connecting groove is provided with a raised polygonal limiting block, the side wall of the connecting groove is provided with an annular groove, two guide grooves are provided from the annular groove to the end face of the drill bit, and the annular groove is provided with two limiting grooves extending to the connecting groove.

2. The detachable and replaceable drill bit according to claim 1, characterized in that: The position angle between the guide groove and the limiting groove ranges from 20° to 90°.

3. The detachable and replaceable drill bit according to claim 1, characterized in that: The limiting hole is hexagonal.

4. The detachable and replaceable drill bit according to claim 1, characterized in that: One end of the drill bit is a five-edged sharp-angle head.

Images