Stainless steel fixed point drill provided with a wear-resistant tip structure

Abstract

The utility model belongs to drill bit technical field especially, more particularly in a kind of stainless steel fixed-point drill with wear-resistant tip structure, to the problem that the drill rod of existing stainless steel fixed-point drill cannot be reused, waste is generated, the following scheme is presented, including drill rod, and the drill bit installed below drill rod, the connecting place of drill bit and drill rod is provided with connecting assembly, and the inside of drill bit and drill rod is provided with cooling assembly;The connecting assembly includes the connecting rod fixed at the top of drill bit, and the connecting groove opened in the bottom of drill rod, the surface of drill rod is provided with mounting hole, the side of connecting rod is provided with the installation plug rod compatible with the aperture of mounting hole, the utility model is inserted into the inside of connecting groove by the connecting assembly set, makes installation plug rod insert inside mounting hole, the connection of drill rod and drill bit can be realized, it is convenient to replace the drill bit of wear, and drill rod can be reused.

Description

Technical Field

[0001] This utility model relates to an adjustable drilling depth drill bit, specifically a stainless steel point drill with a wear-resistant tip structure, belonging to the field of drill bit technology. Background Technology

[0002] A stainless steel centering drill, also known as a centering drill or centering drill, is a specialized drill bit whose core function is to precisely fix the initial position of the drilled hole. Before drilling, an initial hole with a depth of approximately 1-2 times the diameter is pre-drilled using a rigid centering drill to ensure the accuracy of subsequent drilling and to reserve chamfer space for tapping.

[0003] Most stainless steel spot drills currently on the market have a drill rod and drill bit as a single unit. After long-term use, the drill bit is prone to wear on its surface. If the stainless steel spot drill is replaced directly at this time, the intact drill rod cannot be reused, resulting in waste. Utility Model Content

[0004] This invention addresses the problem of waste caused by the inability to reuse drill rods in existing stainless steel spot drills by providing a stainless steel spot drill with a wear-resistant cutting tip structure.

[0005] The present invention achieves the above objectives through the following technical solution: a stainless steel fixed-point drill with a wear-resistant cutting tip structure, including a drill rod and a drill bit installed below the drill rod, wherein a connecting component is provided at the connection between the drill bit and the drill rod, and a cooling component is provided inside the drill bit and the drill rod.

[0006] The connecting assembly includes a connecting rod fixed to the top of the drill bit and a connecting groove opened at the bottom of the drill rod. The surface of the drill rod has an installation hole, and one side of the connecting rod has an installation insert that matches the diameter of the installation hole.

[0007] As a further embodiment of this utility model, the connecting assembly further includes a positioning groove formed on the inner wall of the connecting groove, and a positioning element fixed on one side of the connecting rod that is adapted to the structural dimensions of the positioning groove. The positioning element can be inserted into the interior of the positioning groove to position the connecting rod.

[0008] As a further improvement of this utility model: a guide groove is also provided on one side of the inner wall of the connecting groove, and the depth of the guide groove gradually decreases from the surface of the connecting groove. The guide groove is connected to the mounting hole, and the size of the guide groove is adapted to the size of the mounting rod. The deepest part of the guide groove is adapted to the exposed length of the mounting rod under normal conditions. The mounting rod can retract inward along the compression of the guide groove. After reaching the position of the mounting hole, the mounting rod can be inserted into the mounting hole to connect the drill bit and the drill rod.

[0009] As a further embodiment of this utility model: the connecting assembly further includes a limiting groove formed at the connection between the mounting rod and the connecting rod. A support frame is fixed to the surface of the connecting rod, and a return spring is fixed to one side of the support frame. The other end of the return spring is fixed inside the limiting groove, and the return spring is sleeved on the surface of the connecting rod. The support frame can slide inside the limiting groove, and the support frame cannot disengage from the limiting groove. When the mounting rod moves inward, the return spring can be compressed inward by the support frame. When the mounting rod loses external force, the mounting rod can be pushed outward by the elastic action of the return spring.

[0010] As a further embodiment of this utility model: the cooling assembly includes a guide channel opened inside the drill rod, and a connector is fixed at the water inlet end of the guide channel, and a conical nozzle is fixed at the water outlet end of the guide channel, with the conical nozzle located at the center of the connecting channel. One end of the connector can be connected to a cold water tank, and the coolant enters the guide channel through the connector and flows along the guide channel to the conical nozzle.

[0011] As a further embodiment of this utility model: the cooling assembly also includes a cooling tank opened inside the drill bit, and the water outlet end of the cooling tank is provided with a water outlet hole. The conical nozzle coincides with the axis of the cooling tank and is adapted to the size of the cooling tank. The conical nozzle can be inserted into the interior of the cooling tank, so that the conical nozzle and the cooling tank form a passage, which facilitates the coolant to enter the cooling tank from the conical nozzle.

[0012] As a further improvement of this utility model: the surface of the drill bit is provided with a chip removal groove, and the surface of the drill bit is sprayed with a wear-resistant coating. The water outlet is located on one side of the chip removal groove, and the water outlet is located on the side of the chip removal groove closer to the connecting rod. When the coolant in the cooling tank flows downward, it can flow out through the water outlet and flow down along the chip removal groove to cool the drill bit. The wear-resistant coating can increase the wear resistance of the drill bit.

[0013] The beneficial effects of this utility model are:

[0014] By using the set connection components, the connecting rod is inserted into the inside of the connecting groove, and the mounting rod is inserted into the inside of the mounting hole, thus realizing the connection between the drill rod and the drill bit. This makes it convenient to replace worn drill bits, and the drill rod can be reused.

[0015] The cooling components are designed to connect with the cooling tank via a conical nozzle, creating a passageway. Cooling water can then flow through the guide channel and out through the outlet hole, facilitating the cooling and temperature reduction of the drill bit. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the drill rod structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the drill bit structure of this utility model;

[0019] Figure 4 This is a schematic diagram of a half-section of the present invention;

[0020] Figure 5 This utility model Figure 4 A magnified structural diagram of part A in the middle.

[0021] In the diagram: 1. Drill rod; 2. Drill bit; 3. Connecting assembly; 301. Connecting groove; 302. Positioning groove; 303. Guide groove; 304. Connecting rod; 305. Positioning component; 306. Mounting rod; 307. Support frame; 308. Return spring; 309. Limiting slide; 310. Mounting hole; 4. Cooling assembly; 401. Cooling tank; 402. Connector; 403. Guide channel; 404. Conical nozzle; 405. Water outlet; 5. Chip removal channel; 6. Wear-resistant coating. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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. Example 1

[0023] like Figures 1 to 5 As shown, a stainless steel fixed-point drill with a wear-resistant cutting tip structure includes a drill rod 1 and a drill bit 2 installed below the drill rod 1. A connecting component 3 is provided at the connection between the drill bit 2 and the drill rod 1, and a cooling component 4 is provided inside the drill bit 2 and the drill rod 1.

[0024] The connecting assembly 3 includes a connecting rod 304 fixed to the top of the drill bit 2 and a connecting groove 301 opened at the bottom of the drill rod 1. The surface of the drill rod 1 is provided with a mounting hole 310. A mounting insert 306 adapted to the diameter of the mounting hole 310 is inserted through one side of the connecting rod 304. The drill rod 1 and the drill bit 2 are detachably connected. When the drill bit 2 is installed, the connecting rod 304 is inserted into the inside of the connecting groove 301, and the mounting insert 306 is inserted into the inside of the mounting hole 310, so that the connection between the drill rod 1 and the drill bit 2 can be realized. This makes it convenient to replace the worn drill bit 2, and the drill rod 1 can be reused. Example 2

[0025] In addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0026] The connecting assembly 3 also includes a positioning groove 302 formed on the inner wall of the connecting groove 301, and a positioning member 305 fixed on one side of the connecting rod 304 and adapted to the structural dimensions of the positioning groove 302. The positioning member 305 can be inserted into the interior of the positioning groove 302 to position the connecting rod 304.

[0027] A guide groove 303 is also provided on one side of the inner wall of the connecting groove 301, and the depth of the guide groove 303 gradually decreases from the surface of the connecting groove 301. The guide groove 303 is connected to the mounting hole 310. The guide groove 303 is adapted to the size of the mounting rod 306. The deepest part of the guide groove 303 is adapted to the exposed length of the mounting rod 306 under normal conditions. The mounting rod 306 can retract inward along the compression of the guide groove 303. After reaching the position of the mounting hole 310, the mounting rod 306 can be inserted into the mounting hole 310 to connect the drill bit 2 and the drill rod 1.

[0028] The connecting assembly 3 also includes a limiting groove 309 formed at the connection between the mounting rod 306 and the connecting rod 304. A support frame 307 is fixed to the surface of the connecting rod 304, and a return spring 308 is fixed to one side of the support frame 307. The other end of the return spring 308 is fixed inside the limiting groove 309, and the return spring 308 is sleeved on the surface of the connecting rod 304. The support frame 307 can slide inside the limiting groove 309, and the support frame 307 cannot disengage from the limiting groove 309. When the mounting rod 306 moves inward, the support frame 307 can press the return spring 308 inward. When the mounting rod 306 loses external force, the elastic action of the return spring 308 can push the mounting rod 306 outward. Example 3

[0029] In addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0030] The cooling assembly 4 includes a guide channel 403 formed inside the drill pipe 1, and a connector 402 is fixed at the water inlet end of the guide channel 403. A conical nozzle 404 is fixed at the water outlet end of the guide channel 403, and the conical nozzle 404 is located at the center of the connecting channel 301. One end of the connector 402 can be connected to a cold water tank. The coolant enters the guide channel 403 through the connector 402 and flows along the guide channel 403 to the conical nozzle 404.

[0031] The cooling assembly 4 also includes a cooling groove 401 formed inside the drill bit 2, and the water outlet end of the cooling groove 401 is provided with a water outlet hole 405. The conical nozzle 404 is aligned with the axis of the cooling groove 401 and is adapted to the size of the cooling groove 401. The conical nozzle 404 can be inserted into the interior of the cooling groove 401, so that the conical nozzle 404 and the cooling groove 401 form a passage, which facilitates the coolant to enter the cooling groove 401 from the conical nozzle 404.

[0032] The surface of the drill bit 2 is provided with a chip removal groove 5, and the surface of the drill bit 2 is coated with a wear-resistant coating 6. The water outlet 405 is located on one side of the chip removal groove 5, near the connecting rod 304. When the coolant in the cooling tank 401 flows downward, it can flow out through the water outlet 405 and then flow down along the chip removal groove 5 to cool the drill bit 2. The wear-resistant coating 6 can increase the wear resistance of the drill bit 2. The cooling component 4 can be connected to the cooling tank 401 through the conical nozzle 404 to achieve a passage. The cooling water can flow out through the guide groove 403 and the water outlet 405 to facilitate the cooling of the drill bit 2.

[0033] Working Principle: When using this stainless steel point drill with a wear-resistant cutting tip structure, during drill bit 2 installation, when the connecting rod 304 is inserted into the connecting groove 301, the positioning element 305 is inserted into the positioning groove 302. At this time, the mounting rod 306 can retract inward along the compression of the guide groove 303. Under the action of the guide groove 303, the mounting rod 306 moves inward. It can be compressed inward by the support frame 307 pressing the return spring 308. After reaching the position of the mounting hole 310, the mounting rod 306 loses external force. Under the elastic action of the return spring 308, it can be pushed outward, and the mounting rod 306 can be inserted into the mounting hole 310 to connect the drill bit 2 and the drill rod 1. The drill bit 2 needs to be... During disassembly, a needle-like tool can be used to push the mounting rod 306 inward, allowing it to re-enter the guide groove 303. Pulling the drill bit 2 upward will separate the drill bit 2 from the drill rod 1. When the drill bit 2 is connected to the drill rod 1, the connecting rod 304 is inserted into the connecting groove 301, and the conical nozzle 404 can be inserted into the cooling groove 401, forming a passage between the conical nozzle 404 and the cooling groove 401. One end of the connector 402 can be connected to a cold water tank. The coolant enters the guide groove 403 through the connector 402 and flows along the guide groove 403 to the conical nozzle 404. The coolant enters the cooling groove 401 through the conical nozzle 404, flows out through the water outlet 405, and then flows down the chip removal groove 5 to cool the drill bit 2.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stainless steel spot drill with a wear-resistant cutting tip structure, characterized in that: It includes a drill rod (1) and a drill bit (2) installed below the drill rod (1). A connecting component (3) is provided at the connection between the drill bit (2) and the drill rod (1), and a cooling component (4) is provided inside the drill bit (2) and the drill rod (1). The connecting assembly (3) includes a connecting rod (304) fixed to the top of the drill bit (2) and a connecting groove (301) opened at the bottom of the drill rod (1). The surface of the drill rod (1) is provided with a mounting hole (310). A mounting insert (306) adapted to the diameter of the mounting hole (310) is passed through one side of the connecting rod (304).

2. A stainless steel locating drill with a wear-resistant cutting tip structure according to claim 1, characterized in that: The connecting assembly (3) also includes a positioning groove (302) formed on the inner wall of the connecting groove (301), and a positioning element (305) fixed on one side of the connecting rod (304) and adapted to the structural dimensions of the positioning groove (302).

3. A stainless steel locating drill with a wear-resistant cutting tip structure according to claim 2, characterized in that: A guide groove (303) is also provided on one side of the inner wall of the connecting groove (301), and the depth of the guide groove (303) gradually decreases from the surface of the connecting groove (301). The guide groove (303) is connected to the mounting hole (310).

4. A stainless steel spot drill with a wear-resistant tip structure according to claim 3, characterized in that: The connecting assembly (3) further includes a limiting groove (309) opened at the connection between the mounting rod (306) and the connecting rod (304). A support frame (307) is fixed on the surface of the connecting rod (304), and a return spring (308) is fixed on one side of the support frame (307). The other end of the return spring (308) is fixed inside the limiting groove (309), and the return spring (308) is sleeved on the surface of the connecting rod (304).

5. A stainless steel locating drill with a wear-resistant cutting tip structure according to claim 1, characterized in that: The cooling assembly (4) includes a guide channel (403) opened inside the drill rod (1), and a connector (402) is fixed at the water inlet end of the guide channel (403), and a conical nozzle (404) is fixed at the water outlet end of the guide channel (403), and the conical nozzle (404) is located at the center of the connecting groove (301).

6. A stainless steel locating drill with a wear-resistant cutting tip structure according to claim 5, characterized in that: The cooling assembly (4) also includes a cooling groove (401) inside the drill bit (2), and the water outlet end of the cooling groove (401) is provided with a water outlet hole (405).

7. A stainless steel locating drill with a wear-resistant cutting tip structure according to claim 6, characterized in that: The surface of the drill bit (2) is provided with a chip removal groove (5), and the surface of the drill bit (2) is sprayed with a wear-resistant coating (6). The water outlet (405) is located on one side of the chip removal groove (5).

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