TWM624985U - Improved structure of drill bit escape - Google Patents

Abstract

The present invention is an improved structure for drill bit escape, which includes a drill bit, which has a shank portion, and a blade portion extends from one side of the shank portion. A helical chip flute is extended, the top of the cutting edge has a drill point, and a blade surface is spirally extended downward on both sides of the drill point as the center, and one side of the surface of the blade surface is concavely provided with a drill point. Escape, the escape includes a first escape, a second escape, a third escape with the same depth as the first escape and a stepped arrangement, and the first escape, the first escape The design of the second escape and the third escape achieves the fast chip removal function of the auxiliary drill bit, and it is not easy to break and break the needle during the drilling process, thereby improving the overall yield and quality of the drilled products. .

Description

Drill bit escape improvement structure

The present invention relates to an improved structure for drill bit escape, especially a first escape recessed on one side of the surface of the blade surface and a second escape with the same depth as the first escape and a stepped arrangement, A third escape, so as to assist the rapid chip removal function of the drill bit and improve the overall stability of the drill bit, thereby improving the overall yield and quality of the drilled products.

According to the current trend of light, thin, short and small electronic products, the volume of various electronic products is gradually shrinking. The most important thing that affects electronic products is the mass production of printed circuit boards (PCBs). In the process of miniaturization of printed circuit boards, there is generally a step of drilling holes on the circuit board with a drill, the purpose of which is to connect The circuits on the inner layer of the circuit board supply the pins of the electronic components to be plugged in and form electrical connections.

However, since the printed circuit board is made of a laminated substrate formed by laminating various materials (such as glass fiber and copper foil, etc.), these materials will be melted at high temperature to form slag, and the slag is not only It will make the drill needle easy to reduce the quality and yield of drilling due to excessive cutting resistance, and even in the process of drilling, due to excessive debris and glue residue, the drill needle will be engaged, which will further affect the drilling process. The needle may therefore become sluggish and even break during the drilling process. Even if the needle does not break, the affected hole cannot be kept in good condition and can be It can leave uneven holes in many places, which will affect the printing process of the overall printed circuit board, and waste the materials and money of circuit board printing. the key.

Therefore, in view of the above problems and deficiencies, the creator collected relevant information, evaluated and considered from various parties, and based on years of experience accumulated in this industry, through continuous trials and revisions, before designing this kind of auxiliary rapid chip removal. A new patent for the improved structure of drill bit escape that is functional and is not prone to breakage and broken needles during the drilling process was born.

The main purpose of the present invention is that the drill bit escape improvement structure includes a drill bit, the drill bit has a shank portion, and a blade portion extends from one side of the shank portion, and at least one cutting edge is formed at the top of the blade portion. There is a helical chip flute extending to the inside, the top of the cutting edge has a drill point, and the drill point is the center on both sides extending downward respectively with a blade surface, and one side of the blade surface is concave. There is an escape, the escape includes a first escape, a second escape and a third escape with the same depth as the first escape and a stepped arrangement, so as to achieve the fast chip removal function of the auxiliary drill. , reduce the possibility of waste chips, and the phenomenon of breakage and broken needles is not easy to occur during the drilling process, and the quality of the drilling is improved, thereby improving the yield and quality of the drilling products as a whole.

The secondary purpose of this creation is that the drill bit is a general drill bit or a micro drill bit.

Another purpose of the present invention is that the blade surfaces are spiral-shaped.

Another objective of the present invention is that the first escape is concave in the shape of an arc, and the width of the first escape is 0.25mm.

Another object of the present invention is that the second escape gap is concave in the shape of an arc, and the The width of the second escape is 0.25mm.

Another purpose of the present invention is that the third escape is concave in the shape of an arc, and the width of the third escape is 0.25mm.

1: Drill

11: Handle

12: Blade

13: Cutting edge

131: Drill Tip

132: Blade face

14: Chip flutes

15: Escape

151: The first escape

152: Second Escape

153: The third escape

[Picture 1] is a three-dimensional external view of the improved structure of the drill bit escape created by this invention.

[Picture 2] is a side view of the improved structure of the drill bit for this creation.

[Picture 3] is a partial enlarged view of the second picture of the creation of the drill escape improvement structure.

[Picture 4] is the front view of the cutting edge direction of the improved structure for drill escape of the present invention.

In order to achieve the above purpose and effect, the technical means and structure used in this creation, the preferred embodiment of this creation is described in detail as follows, and its structure and function are as follows, so as to be fully understood.

Please refer to Figures 1 to 4, which are the three-dimensional appearance view, the side view, the partial enlarged view of Figure 2, and the front view of the cutting edge in the direction of the cutting edge. Creating a drill bit escape improvement structure mainly includes a drill bit 1, the drill bit 1 has a shank portion 11, and a blade portion 12 extends from one side of the shank portion 11. The top of the blade portion 12 is formed with at least one cutting edge 13. The cutting edge 13 extends inwardly with a helical chip flute 14, the aforementioned cutting edge 13 has a drill tip 131 at the top, and a cutting edge portion 132 extends downward on both sides with the drill tip 131 as the center. An escape 15 is recessed on the surface of the surface 132 , and the escape 15 includes a first escape 151 , a second escape 152 and a third escape 153 with the same depth as the first escape 151 , and the The first escape 151 , the second escape 152 and the third escape 153 are stepped arrangement, and the widths of the first escape 151, the second escape 152 and the third escape 153 are all 0.25mm, and the first escape 151, the second escape 152 and the third escape The three escape gaps 153 are concave in a circular arc shape.

During the actual drilling operation, the drill tip 131 of the cutting edge 13 is first contacted on the surface of a predetermined circuit board, and the cutting edge 13 is rotated by the drill 1 in the improved structure of the drill bit of the present invention. The cutting edge surfaces 132 are drilled into the predetermined circuit board to form a hole with an up and down penetration shape, and during the drilling process, the first escape 151 and the second escape on the cutting edge surface 132 The clearance 152 and the third clearance 153 can maintain the stability of the drill bit 1 and the cutting edge 13 , and the first clearance 151 , the second clearance 152 and the third clearance 153 have a stepped shape with the same depth The arrangement can further improve the fluency of chip removal of the chip removal groove 14 to assist the rapid chip removal function of the drill 1 and reduce the possibility of generating waste chips, so as to avoid the waste chips during the chip removal process from blocking the chip removal groove. 14, and the blade surface portion 132 having the first escape 151, the second escape 152 and the third escape 153 can improve the overall stability of the drill bit 1, so that the drill can be used in the drilling process. It is not easy to cause breakage and broken needles, and the quality of drilling is improved, thereby improving the overall yield and quality of drilling products.

The above is only the preferred embodiment of this creation, and therefore it limits the scope of the patent of this creation. Therefore, any simple modifications and equivalent structural changes made by using the contents of the description and drawings of this creation should be included in the same description. Within the scope of the patent of this creation, I agree to Chen Ming.

To sum up, in order to achieve the effect and purpose of the drill escape improvement structure of this creation, it is a creation with excellent practicality. I hope that the review committee will approve this case as soon as possible to protect the hard work of the creator. If the review committee has any doubts, please do not hesitate to send a letter for instructions, and the creator will be exhausted. Force cooperation, real sense of virtue.

1: Drill

11: Handle

12: Blade

13: Cutting edge

131: Drill Tip

132: Blade face

14: Chip flutes

15: Escape

151: The first escape

152: Second Escape

153: The third escape

Claims (6)

A drill bit escape improvement structure comprises a drill bit, the drill bit has a shank portion, and a blade portion extends from one side of the shank portion. A chip flute in the shape of a chip groove, the top of the cutting edge has a drill point, and the drill point is a center on both sides extending downwards with a blade surface, and one side of the surface of the blade surface is concave with an escape, the escape The gap includes a first gap, a second gap and a third gap with the same depth as the first gap and a stepped arrangement. The drill bit escape improvement structure according to claim 1, wherein the drill bit is a general drill bit or a micro drill bit. The drill bit escape improvement structure as claimed in claim 1, wherein the cutting surfaces are helical. The drill bit escape improvement structure as claimed in claim 1, wherein the first escape is concave in a circular arc shape, and the width of the first escape is 0.25mm. The drill bit escape improvement structure according to claim 1, wherein the second escape is concave in a circular arc shape, and the width of the second escape is 0.25mm. The drill bit escape improvement structure according to claim 1, wherein the third escape space is concave in a circular arc shape, and the width of the third escape space is 0.25mm.

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