Drill bit

Abstract

The utility model relates to the technical field of drill bits, in particular to a drill bit which comprises a sleeve used for being connected with an external driving unit. The deep hole drill is fixedly arranged at the bottom end of the sleeve and is used for drilling a deep hole; the countersunk head drill is arranged on the outer surface of the sleeve and is in sliding connection with the deep hole drill, a second blade is arranged at the contact position of the countersunk head drill and the deep hole drill, and the second blade is used for removing burrs on the upper edge of the deep hole; the countersunk drill is arranged on the outer surface of the sleeve, the sliding sleeve is arranged on the outer surface of the sleeve and connected with the countersunk drill in a sliding mode, a first blade is arranged at the contact position of the sliding sleeve and the countersunk drill, and the first blade is used for removing burrs on the upper edge of a counter bore. Manual removal is not needed, and the machining quality of the counterbore is improved.

Description

Technical Field

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

[0002] The countersink drill is used to process countersinks. The function of the countersink is to bury the bolt head into the interior of the part without any protruding part, without affecting the appearance or external structure.

[0003] After searching, a countersink drill bit is disclosed in the Chinese utility model patent database, with application number: CN201320223678.7, including a clamp handle and a drill bit, the drill bit is composed of a main drill bit and an auxiliary drill bit, the clamp handle is hollow inside, one end of the clamp handle is connected to the drilling machine, the other end of the clamp handle is provided with an auxiliary drill bit, the main drill bit is plug-connected inside the clamp handle, the main drill bit is below the auxiliary drill bit, the main drill bit and the auxiliary drill bit form a step, and the center lines of the main drill bit, the auxiliary drill bit and the clamp handle are basically located in a straight line. The utility model has the advantages of reducing manufacturing costs and facilitating the replacement of drill bits.

[0004] However, during the use of the above-mentioned countersink drill, burrs will appear on the upper edge of the countersink and deep hole. In subsequent use, the burrs will affect the processing accuracy and easily cause scratches to the workers. Therefore, the workers will use a scraper to scrape off the burrs on the upper edges of the countersink and deep holes after drilling the countersink holes, which greatly increases the labor intensity of the workers. Utility Model Content

[0005] The utility model aims to provide a drill bit to solve the problems in the prior art.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A drill bit, comprising:

[0008] A sleeve, which is used to connect with an external drive unit;

[0009] A deep hole drill, which is fixedly arranged at the bottom end of the sleeve and is used for drilling a deep hole;

[0010] A countersunk drill, which is arranged on the outer surface of the sleeve and is slidably connected with the deep hole drill, and a second blade is arranged at the contact position between the countersunk drill and the deep hole drill, and the second blade is used to remove burrs on the upper edge of the deep hole;

[0011] A sliding sleeve is arranged on the outer surface of the sleeve and is slidably connected with the countersink drill. A blade 1 is arranged at the contact position between the sliding sleeve and the countersink drill, and the blade 1 is used to remove burrs on the upper edge of the countersink hole.

[0012] Preferably, a conical positioning drill is provided at the bottom end of the deep hole drill, the central axis of the positioning drill is consistent with the central axis of the deep hole drill, and the diameter of the conical positioning drill gradually decreases from top to bottom.

[0013] Preferably, the outer surface of the positioning drill is provided with a threaded protrusion.

[0014] Preferably, the outer surfaces of the countersunk drill and the sliding sleeve are both provided with countersunk bolts, and the ends of the countersunk bolts abut against the sleeve.

[0015] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0016] In the utility model, the burrs on the upper surfaces of the deep hole and the countersunk hole can be removed by the provided blade one and blade two, without manual removal, thereby improving the processing quality of the countersunk hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a drill bit in this application.

[0018] In the attached drawings: 10-sleeve, 20-sliding sleeve, 21-blade one, 30-countersunk drill, 31-blade two, 40-deep hole drill, 41-positioning drill, 42-threaded boss, 50-countersunk bolt. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0021] See also Figure 1 In this application, a technical solution is provided;

[0022] A drill bit, comprising:

[0023] A sleeve 10, which is used to connect with an external drive unit;

[0024] A deep hole drill 40, which is fixedly arranged at the bottom end of the sleeve 10 and is used for drilling a deep hole;

[0025] The countersunk drill 30 is arranged on the outer surface of the sleeve 10 and is slidably connected with the deep hole drill 40. A second blade 31 is arranged at the contact position between the countersunk drill 30 and the deep hole drill 40. The second blade 31 is used to remove burrs on the upper edge of the deep hole;

[0026] The sliding sleeve 20 is arranged on the outer surface of the sleeve 10 and is slidably connected with the countersunk drill 30. A blade 21 is arranged at the contact position between the sliding sleeve 20 and the countersunk drill 30. The blade 21 is used to remove burrs on the upper edge of the countersunk hole.

[0027] In the above, during the drilling process, the drill bit can remove burrs on the upper surface of the deep hole and the countersunk hole by using the provided blade 1 21 and blade 2 31, without manual removal, thereby improving the processing quality of the countersunk hole.

[0028] Specifically, Figure 1 As shown in the figure: a conical positioning drill 41 is provided at the bottom end of the deep hole drill 40, the central axis of the positioning drill 41 is consistent with the central axis of the deep hole drill 40, and the diameter of the conical positioning drill 41 gradually decreases from top to bottom, so that the positioning of the deep hole drill 40 is facilitated to avoid deviation during the drilling process.

[0029] Specifically, Figure 1 As shown in FIG. 4 , the outer surface of the positioning drill 41 is provided with a threaded protrusion 42 , and the threaded protrusion 42 further improves the guiding function.

[0030] Specifically, Figure 1 As shown in the figure: the outer surfaces of the countersunk drill 30 and the sliding sleeve 20 are both provided with countersunk bolts 50, and the ends of the countersunk bolts 50 abut against the sleeve 10, which are used for adjusting and positioning the countersunk drill 30 and the sliding sleeve 20, thereby realizing the length adjustment of the countersunk hole and the deep hole.

[0031] It should be noted that the above-mentioned driving unit can be a pistol drill, a drilling machine, or other equipment used to drive the drill bit to rotate and feed.

[0032] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A drill bit, characterized in that: include: A sleeve (10) for connecting with an external drive unit; A deep hole drill (40), which is fixedly arranged at the bottom end of the sleeve (10) and is used for drilling a deep hole; A countersunk drill (30) is arranged on the outer surface of the sleeve (10) and is slidably connected to the deep hole drill (40). A second blade (31) is arranged at the contact position between the countersunk drill (30) and the deep hole drill (40). The second blade (31) is used to remove burrs on the upper edge of the deep hole; A sliding sleeve (20) is arranged on the outer surface of the sleeve (10) and is slidably connected to the countersunk drill (30). A blade (21) is arranged at the contact position between the sliding sleeve (20) and the countersunk drill (30). The blade (21) is used to remove burrs on the upper edge of the countersunk hole.

2. A drill bit according to claim 1, characterized in that: A conical positioning drill (41) is provided at the bottom end of the deep hole drill (40), the central axis of the positioning drill (41) is consistent with the central axis of the deep hole drill (40), and the diameter of the conical positioning drill (41) gradually decreases from top to bottom.

3. A drill bit according to claim 2, characterized in that: The outer surface of the positioning drill (41) is provided with a threaded protrusion (42).

4. A drill bit according to claim 1, characterized in that: The outer surfaces of the countersunk drill (30) and the sliding sleeve (20) are both provided with countersunk bolts (50), and the ends of the countersunk bolts (50) are in contact with the sleeve (10).

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