Drill bit special for punching thin plate

Abstract

The utility model discloses a special drill bit for punching a thin plate. The special drill bit comprises a drill body and a drilling part, the drilling tool further comprises a positioning part which is arranged at the front end of the drilling part, the drilling part is in a conical shape, and the diameter of the positioning part is smaller than that of the front end of the drilling part. The drilling part is arranged to be in the conical shape and matched with the positioning part, rapid and accurate positioning can be achieved, the conical drilling part can reduce drilling resistance, rapid hole expanding and drilling can be achieved after a hole is drilled in the positioning part, and the drill bit is suitable for thin plate drilling machining.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill bits, and specifically relates to a special drill bit for punching thin plates. Background Art

[0002] Existing thin plate punching is carried out with ordinary drill bits. During drilling with ordinary drill bits, the hole position is not accurately positioned. During the thin plate punching process, the hole diameter is prone to deviation due to the influence of the feed rate and feed speed. Since the plate is relatively thin, it is mostly drilled through at one time. The ordinary drill bit bears a large resistance and is prone to overheating and becoming blunt after a long time of punching. Therefore, the drill bit needs to have excellent performance of accurate positioning and adaptability to a relatively fast drilling speed. To solve this problem, a special drill bit for punching thin plates is provided. Summary of the Utility Model

[0003] In view of this, the technical problem to be solved by the utility model is to provide a special drill bit for punching thin plates, which solves the problem of poor performance of the thin plate punching drill bit in the prior art.

[0004] To solve the above technical problem, the utility model discloses a special drill bit for punching thin plates, including: a drill body and a cutting part; it further includes a positioning part, the positioning part is arranged at the front end of the cutting part, the cutting part is in a conical shape, the diameter of the positioning part is smaller than the diameter of the front end of the cutting part, the cutting part is in a double-edge spiral shape, the pitch of the spiral edge gradually decreases from the tail end to the front end, and the cone angle of the cutting part is 1-5°.

[0005] Further, the length of the cutting part is less than the length of the drill body.

[0006] Further, the positioning part is in a pointed shape and has double spiral grooves.

[0007] Further, the front end of the cutting part is in a flat shape.

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

[0009] The utility model sets the cutting part in a conical shape and cooperates with the positioning part, which can quickly and accurately position. The conical cutting part can reduce the cutting resistance and can quickly ream and drill after the hole is drilled by the positioning part, and is suitable for thin plate drilling processing.

[0010] Of course, any product implementing the present application does not necessarily need to achieve all the above-mentioned technical effects 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 schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0012] Figure 1 It is a schematic diagram of a drill bit according to an embodiment of the present utility model.

[0013] Reference numerals

[0014] Drill body 1, drilling part 2, positioning part 3. Specific embodiments

[0015] The following will describe in detail the embodiments of the present application in conjunction with the accompanying drawings and examples, so as to fully understand how the present application uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0016] Please refer to Figure 1 , Figure 1 It is a schematic diagram of a drill bit according to an embodiment of the present utility model. A special drill bit for punching holes in thin plates includes: a drill body 1 and a drilling part 2; it further includes a positioning part 3, the positioning part 3 is arranged at the front end of the drilling part 2, the drilling part 2 is in a conical shape, and the diameter of the positioning part 3 is smaller than the diameter of the front end of the drilling part 2.

[0017] The drilling part 2 is in a double-edge spiral shape, the pitch of the spiral edge gradually decreases from the tail end to the front end, the cone angle of the drilling part 2 is 1-5°, and the length of the drilling part 2 is less than the length of the drill body 1; the positioning part 3 is in a pointed shape and has double spiral grooves, and the front end of the drilling part 2 is in a flat shape.

[0018] Example: The total length L1 of the drill bit is 70 mm, the length L2 of the drilling part 2 is 31 mm, the diameter D of the drill body 1 is 6 mm, and the taper A of the drilling part 2 is 1.5°.

[0019] The present utility model sets the drilling part 2 in a conical shape and cooperates with the positioning part 3, which can quickly and accurately position. The conical drilling part 2 can reduce the drilling resistance and can quickly ream and drill after the hole is drilled by the positioning part 3, and is suitable for drilling thin plates.

[0020] The above description shows and describes several preferred embodiments of the present utility model. However, as mentioned above, it should be understood that the present utility model is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be within the scope of the inventive concept described herein, and can be modified by the above teachings or the technology or knowledge in related fields. And the modifications and changes made by those skilled in the art without departing from the spirit and scope of the present utility model should all be within the protection scope of the appended claims of the present utility model.

Claims

1. A special drill bit for punching holes in thin plates, comprising: Drill body and drilling part; It is characterized in that it further includes a positioning part, the positioning part is arranged at the front end of the drilling part, the drilling part is in a conical shape, the diameter of the positioning part is smaller than the diameter of the front end of the drilling part, the drilling part is in a double-edge spiral shape, and the pitch of the spiral edge gradually decreases from the tail end to the front end, and the cone angle of the drilling part is 1 to 5°.

2. The special drill bit for punching holes in thin plates according to claim 1, characterized in that, The length of the drilling part is less than the length of the drill body.

3. The special drill bit for punching holes in thin plates according to claim 1, characterized in that, The positioning part is in a pointed shape and has double spiral grooves.

4. The special drill bit for punching holes in thin plates according to claim 1, characterized in that, The front end of the drilling part is in a flat shape.

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