Blind hole drill bit for drilling aluminum alloy laminated board

Abstract

The utility model discloses a blind hole drill bit for drilling an aluminum alloy laminated board, which comprises an alloy head part, a chip groove part and a handle part, the handle part and the chip groove part jointly form a drill bit base body, the alloy head part and the drill bit base body jointly form a blind hole drill bit structure, the alloy head part comprises a center tip and a main cutting edge, and the chip groove part comprises a main chip groove and an auxiliary chip groove. Based on improvement of an existing standard European-type blind hole drill bit, an original cutting edge is omitted, the problems of cutting resistance and burrs possibly generated in the drilling process are reduced, the surface machining quality is improved, the main cutting edge is designed to be of a V-shaped structure, cutting force can be dispersed more effectively through the design, and the machining efficiency is improved. The cutting resistance during drilling is reduced, meanwhile, the stability and the cutting efficiency of the drill bit are improved, and according to the characteristics of the aluminum laminated board, the machining quality is further improved and the service life of the drill bit is further prolonged through the joint design of canceling the cutting edge and adopting the V-shaped main cutting edge.

Description

Technical Field

[0001] The utility model relates to the technical field of blind hole drill bits, in particular to a blind hole drill bit for drilling aluminum alloy veneer panels. Background Art

[0002] When drilling aluminum veneers (such as aluminum-plastic veneers), blind hole drill bits are primarily used to create blind holes in workpieces—holes that are open at one end and closed at the other. The design of these drill bits requires consideration of several factors, including drill geometry, cutting performance, chip evacuation, durability, and machining accuracy.

[0003] Traditional European-type blind hole drill bits are prone to encountering large cutting resistance during the drilling process, which not only affects the drilling speed, but may also cause damage to the drill bit or deformation of the workpiece. In addition, the presence of the cutting edge makes it easy to produce burrs and uneven surfaces when processing aluminum veneer panels, affecting the appearance quality and subsequent use effects of the product. At the same time, due to the problems of cutting resistance and surface processing quality, traditional drill bits wear out faster when processing aluminum veneer panels, have a shorter service life, and increase production costs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a blind hole drill bit for drilling aluminum alloy veneer panels.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The utility model discloses a blind hole drill bit for drilling aluminum alloy veneer panels, comprising an alloy head, a chip groove portion, and a shank portion. The shank portion and the chip groove portion together constitute a drill bit base, and the alloy head and the drill bit base together constitute a blind hole drill bit structure. The alloy head comprises a center tip and a main cutting edge, the chip groove portion comprises a main chip groove and a secondary chip groove, one end of the main cutting edge is fixedly connected to the shank portion, the other end of the main cutting edge is provided with a center tip, a chip groove is provided inside the main cutting edge, and the main cutting edge is V-shaped.

[0007] As a preferred technical solution of the present invention, the diameter of the tool body of the chip groove portion is d1, and the diameter of the shank portion is d2.

[0008] As a preferred technical solution of the present invention, the center tip angle β is 60°-120°, and the main cutting edge angle θ is 120°-170°.

[0009] As a preferred technical solution of the present invention, the outer diameter of the alloy head is D, and the diameter d1 of the chip groove portion is smaller than the diameter D of the alloy head.

[0010] As a preferred technical solution of the present invention, the difference between the outer diameter D of the alloy head and the diameter d1 of the chip groove portion increases as the value of D increases.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] The utility model is improved based on the existing standard European blind hole drill bit. By eliminating the original cutting edge, the cutting resistance and burr problems that may be generated during the drilling process are reduced, the surface processing quality is improved, and the main cutting edge is designed into a V-shaped structure. This design can more effectively disperse the cutting force, reduce the cutting resistance when drilling, and at the same time improve the stability and cutting efficiency of the drill bit. In addition, according to the characteristics of aluminum veneer panels, the cutting edge is eliminated and the V-shaped main cutting edge is adopted to further improve the processing quality and the service life of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This utility model Figure 1 Left side view;

[0016] Figure 3 This utility model Figure 1 Cross-sectional view in the MM direction;

[0017] Figure 4 This utility model Figure 1 Cross-sectional view along the KK axis;

[0018] In the figure: 1. alloy head; 101. center tip; 102. main cutting edge; 2. chip groove; 201. main chip groove; 202. secondary chip groove; 3. shank. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0020] In the drawings, the same reference numerals all refer to the same components.

[0021] like Figure 1-4As shown, the utility model provides a blind hole drill bit for drilling aluminum alloy veneer panels, including an alloy head 1, a chip groove portion 2, and a shank 3. The shank 3 and the chip groove portion 2 together constitute a drill bit base, and the alloy head 1 and the drill bit base together constitute a blind hole drill bit structure. The alloy head 1 includes a center tip 101 and a main cutting edge 102. The chip groove portion 2 includes a main chip groove 201 and a secondary chip groove 202. One end of the main cutting edge 102 is fixedly connected to the shank 3, and the other end of the main cutting edge 102 is provided with a center tip 101. By designing the main cutting edge 102 into a V-shaped structure, this design can more effectively disperse the cutting force, reduce the cutting resistance during drilling, and improve the stability and cutting efficiency of the drill bit. The main cutting edge 102 is V-shaped.

[0022] Furthermore, the diameter of the tool body of the chip groove portion 2 is d1, the diameter of the shank portion 3 is d2, and the vertical projection length of the shank portion 3 is B.

[0023] Furthermore, the included angle β of the center tip 101 is 60°-120°, the included angle θ of the main cutting edge 102 is 120°-170°, the vertical projection length of the center tip 101 is h, and the sum of the lengths of the center tip 101 and the main cutting edge 102 is H.

[0024] Furthermore, the outer diameter of the alloy head 1 is D, and the diameter d1 of the chip groove portion 2 is smaller than the diameter D of the alloy head 1, mainly to avoid air, reduce frictional resistance, and reduce heat generation.

[0025] Furthermore, the difference between the outer diameter D of the alloy head 1 and the diameter d1 of the chip groove portion 2 increases as the value of D increases.

[0026] Working principle: The utility model is improved based on the existing standard European blind hole drill bit. By eliminating the original cutting edge, the cutting resistance and burr problems that may occur during the drilling process are reduced, the surface processing quality is improved, and the main cutting edge 102 is designed to be a V-shaped structure. This design can more effectively disperse the cutting force, reduce the cutting resistance when drilling, and at the same time improve the stability and cutting efficiency of the drill bit. In view of the characteristics of aluminum veneer panels, the cutting edge is eliminated and the V-shaped main cutting edge 102 is adopted in the joint design, which further improves the processing quality and the service life of the drill bit. The size of the discharge groove 2 is smaller than that of the alloy head 1, mainly to avoid air, reduce frictional resistance, and reduce heat.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A blind hole drill bit for drilling aluminum alloy veneer panels, characterized in that: The drill bit comprises an alloy head (1), a chip groove portion (2), and a shank portion (3); the shank portion (3) and the chip groove portion (2) together constitute a drill base; the alloy head (1) and the drill base together constitute a blind hole drill structure; the alloy head (1) comprises a center tip (101) and a main cutting edge (102); the chip groove portion (2) comprises a main chip groove (201) and a secondary chip groove (202); one end of the main cutting edge (102) is fixedly connected to the shank portion (3); the other end of the main cutting edge (102) is provided with a center tip (101); and the main cutting edge (102) is V-shaped.

2. A blind hole drill bit for drilling aluminum alloy veneer panels according to claim 1, characterized in that: The diameter of the tool body of the chip removal groove portion (2) is d1, and the diameter of the shank portion (3) is d2.

3. The blind hole drill bit for drilling aluminum alloy veneer panels according to claim 1, characterized in that: The included angle β of the center tip (101) is 60°-120°, and the included angle θ of the main cutting edge (102) is 120°-170°.

4. The blind hole drill bit for drilling aluminum alloy veneer panels according to claim 1, characterized in that: The outer diameter of the alloy head (1) is D, and the diameter d1 of the chip groove portion (2) is smaller than the diameter D of the alloy head (1).

5. The blind hole drill bit for drilling aluminum alloy veneer panels according to claim 4, characterized in that: The difference between the outer diameter D of the alloy head (1) and the diameter d1 of the chip groove portion (2) increases as the value of D increases.

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