Drill bit convenient to drill and feed

Abstract

The utility model discloses a drill bit convenient for drilling and feeding. The drill bit comprises a drill rod; the spiral drill edges are arranged at the front end of the drill rod; the number of the spiral drill edges is two; the tip part extends to the front end of the spiral drill edge, the tip part is linear and is provided with a rear straight handle part and a front triangular tip part, and the spiral drill edge extends to the front end of the rear straight handle part; the sawtooth blocks are arranged on the two sides of the rear straight handle part; and the inner chute cutting edge is arranged at the top of the front triangular tip part. According to the utility model, the straight tip part is used for positioning, the front triangular tip part and the rear straight shank part with the sawtooth block are used for feeding, continuous drilling is realized, the abrasion is reduced, the spiral drill edge is matched for drilling, and the efficiency and the durability are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill bits, and in particular relates to a drill bit which is convenient for drilling and feeding. Background Art

[0002] A drill is a tool used to drill through holes or blind holes in solid materials, and can expand existing holes. Drills can be divided into those for rough machining and those for fine machining. Drills for rough machining generally have a large cutting volume, which will cause great wear on the cutting edge during the cutting process, eventually causing the drilling to become slower and slower, resulting in jamming.

[0003] Therefore, a drill bit that is convenient for drilling feed is in urgent need of research. Utility Model Content

[0004] In view of this, the technical problem to be solved by the utility model is to provide a drill bit that is easy to drill and feed, so as to avoid the troubles of slow drilling and jamming of the drill bit and easy wear of the drilling edge in the past.

[0005] In order to solve the above technical problems, the utility model discloses a drill bit that is convenient for drilling and feeding, comprising:

[0006] Drill pipe;

[0007] A spiral drill blade is arranged at the front end of the drill rod, and two spiral drill blades are arranged;

[0008] A tip portion extending from the front end of the spiral drill blade, the tip portion is in a straight line shape and has a rear straight shank portion and a front triangular tip portion, and the spiral drill blade extends to the front end of the rear straight shank portion;

[0009] Sawtooth blocks arranged on both sides of the rear straight handle;

[0010] The inner bevel cutting edge is arranged at the top of the front triangular tip.

[0011] According to one embodiment of the utility model, the top end of the front triangular tip is flat, and the inner bevel groove edge extends backward from the top end of the front triangular tip in a triangular shape.

[0012] According to one embodiment of the utility model, the axial length of the inner bevel groove cutting edge is 3-6 mm.

[0013] According to an embodiment of the utility model, the depth of the inner bevel groove edge gradually decreases from the top of the front triangular tip to the inside.

[0014] According to an embodiment of the present invention, the sawtooth blocks are configured as a plurality of 2 mm equilateral triangle tooth blocks.

[0015] Compared with the prior art, the utility model can obtain the following technical effects:

[0016] Through the positioning of the straight tip, the front triangular tip and the rear straight shank with serrated blocks are fed at the same time, drilling is continuous, wear is reduced, and drilling with the spiral drill blade improves efficiency and enhances durability.

[0017] Of course, any product implementing the present utility model does not necessarily need to achieve all of the above-mentioned technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is a schematic diagram of a drill bit for facilitating drilling feeding according to an embodiment of the utility model;

[0020] Figure 2 yes Figure 1 Schematic diagram of the top part.

[0021] Figure ID

[0022] Drill rod 10, spiral drill blade 20, top portion 30, rear straight shank portion 31, front triangular tip portion 32, sawtooth block 40, inner bevel groove cutting edge 50. DETAILED DESCRIPTION

[0023] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0024] Please refer to Figure 1 and Figure 2 , Figure 1 It is a schematic diagram of a drill bit for facilitating drilling feeding according to an embodiment of the utility model; Figure 2 yes Figure 1 Schematic diagram of the top part.

[0025] As shown in the figure, a drill bit that is convenient for drilling and feeding includes: a drill rod 10; a spiral drill blade 20 arranged at the front end of the drill rod 10, and the spiral drill blade 20 is provided with two strips; a tip portion 30 extending from the front end of the spiral drill blade 20, the tip portion 30 is in a straight line shape, and has a rear straight shank portion 31 and a front triangular tip portion 32, and the spiral drill blade 20 extends to the front end of the rear straight shank portion 32; sawtooth blocks 40 arranged on both sides of the rear straight shank portion 32; an inner bevel groove cutting edge 50 arranged at the top of the front triangular tip portion 31.

[0026] In one embodiment of the utility model, the drill rod 10 can be set to a round handle, and the front end is arranged and formed by the spiral drill blade 20 for drilling feed and chip removal. The top portion 30 is located at the top to achieve positioning and drilling work. Among them, the top portion 30 is arranged in a straight line, and the two sides are extended forward by the spiral drill blade 20 to facilitate feeding, and the spiral drill blade 20 includes a rear straight handle portion 31 and a front triangular tip portion 32. The triangular tip portion 32 is positioned by its top, and an inner bevel groove cutting edge 50 is additionally provided on the top, which can increase the efficiency of drilling and accelerate feeding. The two ends of the rear straight handle portion 31 are respectively provided with protruding serrated blocks 40, which can increase the efficiency of feeding, continuously drill chips, reduce the wear of the rear spiral drill blade, and enhance durability.

[0027] Preferably, the top of the front triangular tip 32 is flat, which is convenient for positioning and drilling, and the inner bevel cutting edge 50 extends backward in a triangular shape from the top of the front triangular tip 32 to facilitate the discharge of debris during drilling, while enhancing the guiding property and improving the drilling efficiency.

[0028] Furthermore, the axial length of the inner bevel groove edge 50 is 3-6 mm to avoid being too long to affect its strength.

[0029] In addition, the depth of the inner bevel groove edge 50 gradually decreases from the top of the front triangular tip 32 to the inside, and continuously transitions to a plane, with high smoothness.

[0030] In a preferred embodiment, the sawtooth block 40 is configured as a plurality of 2 mm equilateral triangle tooth blocks, which has a high drilling feed efficiency.

[0031] In summary, the utility model uses the straight tip portion 30 for positioning, while the front triangular tip portion and the rear straight shank portion 31 with the sawtooth block 40 are fed, drilling is continued, wear is reduced, and the spiral drill blade 20 is used for drilling to improve efficiency and enhance durability.

[0032] 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 drill bit for convenient drilling feed, characterized in that: include: Drill pipe; A spiral drill blade is arranged at the front end of the drill rod, and two spiral drill blades are arranged; A tip portion extending from the front end of the spiral drill blade, the tip portion is in a straight line shape and has a rear straight shank portion and a front triangular tip portion, and the spiral drill blade extends to the front end of the rear straight shank portion; Sawtooth blocks arranged on both sides of the rear straight handle; An inner bevel cutting edge is arranged at the top of the front triangular tip.

2. The drill bit for facilitating drilling feed according to claim 1, characterized in that: The top of the front triangular tip is flat, and the inner bevel cutting edge extends backward from the top of the front triangular tip in a triangular shape.

3. The drill bit for facilitating drilling feed according to claim 1, characterized in that: The axial length of the inner bevel groove cutting edge is 3-6 mm.

4. The drill bit for facilitating drilling feed according to claim 1, characterized in that: The depth of the inner bevel groove edge gradually decreases from the top of the front triangular tip to the inside.

5. The drill bit for facilitating drilling feed according to claim 1, characterized in that: The sawtooth blocks are configured as a plurality of 2 mm equilateral triangle tooth blocks.

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