An integrated high-efficiency forming drill bit

Abstract

The utility model discloses an integrated high -efficient forming drill bit, including integrated forming drill bit main part, the integrated forming drill bit main part drill tip is equipped with cutting section, the integrated forming drill bit main part other end is equipped with handle section, be equipped with transition section between cutting section and handle section. The utility model discloses a spiral chip removal groove is set up on the drill bit, forms the continuous chip discharge channel, promotes the chip removal efficiency, the spiral angle of cutting section is relatively steep, can enhance the chip removal capacity, prevents the chip accumulation, the spiral chip removal groove that sets up gradually changes, optimizes the chip flow, sets up the dimple in the spiral chip removal groove, forces the chip fracture, avoids the long chip winding, improves the processing efficiency, sets up the spiral cooling channel in the drill bit inboard, and the coolant flows along the drill bit rotation direction, enhances the heat exchange efficiency, and sprays through the multistage branch microchannel distribution all around, can reduce the cutting temperature, reduces the drill wear.

Description

Technical Field

[0001] This utility model relates to the field of metal cutting tool technology, specifically to an integrated high-efficiency forming drill bit. Background Technology

[0002] Many existing drill bits use a split welded structure, such as the separation of the cutting head and the shank, which results in low strength of the welded parts and easy breakage. To address this, a one-piece high-efficiency forming drill bit is proposed.

[0003] The prior art, disclosed in patent document CN222001969U, presents the following technical solution: a shaped groove twist drill bit, comprising a shank, one end of which is fixedly connected to a drill rod, one end of which is provided with a drill tip cutting edge, the surface of which is provided with a spiral backing, which extends to the surface of the drill tip cutting edge, the backing and the surface of the drill rod forming a spiral chip removal groove, which extends to the surface of the drill tip cutting edge, and the cross-section of the chip removal groove is a concave semi-circle recessed towards the center of the drill rod.

[0004] The fixed helix angle of the chip removal groove in the above technical solution leads to uneven chip removal efficiency. In addition, traditional drill bits use external cooling or simple straight hole internal cooling, which has low cooling efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an integrated high-efficiency forming drill bit to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an integrated high-efficiency forming drill bit, comprising an integrated forming drill bit body, wherein the tip of the integrated forming drill bit body is provided with a cutting section, the other end of the integrated forming drill bit body is provided with a shank section, and a transition section is provided between the cutting section and the shank section.

[0007] The outer side of the transition section is provided with a spiral chip removal groove. The depth of the spiral chip removal groove gradually decreases from the cutting section to the shank section and ends at the front end of the shank section. The spiral angle of the spiral chip removal groove is steeper near the cutting section and gentler near the shank section. The inner wall of the spiral chip removal groove is provided with a pit.

[0008] In the above technical solution, a spiral chip removal groove is set on the drill bit to form a continuous chip discharge channel, thereby improving chip removal efficiency. The spiral angle near the cutting section is steeper, which can enhance chip removal capacity and prevent chip accumulation. The spiral chip removal groove is gradually changed to optimize chip flow. A pit is set inside the spiral chip removal groove to force chip breakage, avoid long chip entanglement, and improve processing efficiency.

[0009] A spiral cooling channel is provided on the inner side of the transition section. The spiral cooling channel is formed synchronously with the spiral chip removal groove. A liquid inlet channel is provided at the upper end of the transition section and is connected to the spiral cooling channel. A multi-level branched microchannel is provided below the spiral cooling channel and distributed around the drill bit tip.

[0010] In the above technical solution, a spiral cooling channel is set on the inside of the drill bit, and the coolant flows along the rotation direction of the drill bit to enhance the heat exchange efficiency. It is also sprayed out through multi-level branched microchannels distributed around the perimeter, which can reduce the cutting temperature and reduce drill bit wear.

[0011] As a further preferred embodiment of this technical solution, the cutting section includes a main cutting edge and an auxiliary cutting edge. The main cutting edge is located at the tip of the drill bit, and the auxiliary cutting edge connects the main cutting edge and the outer edge of the drill bit. The main cutting edge and the auxiliary cutting edge are symmetrically distributed at the tip of the drill bit.

[0012] In the above technical solution, the main cutting edge and the auxiliary cutting edge can reduce burrs in the drill hole and improve the surface finish of the hole wall.

[0013] As a further preferred embodiment of this technical solution, the helix angle of the spiral chip removal groove is 35°-45° in the cutting section and 20°-30° at the front end of the shank section 13.

[0014] As a further preferred embodiment of this technical solution, the bottom of the spiral chip removal groove is arc-shaped and the surface is polished.

[0015] As a further preferred embodiment of this technical solution, the integrally formed drill bit body is made of high-hardness alloy or composite material.

[0016] As a further preferred embodiment of this technical solution, the tips of the main cutting edge and the auxiliary cutting edge are treated with a nano-coating.

[0017] This utility model provides an integrated high-efficiency forming drill bit, which has the following beneficial effects:

[0018] (1) This utility model improves chip removal efficiency by setting a spiral chip removal groove on the drill bit to form a continuous chip removal channel. The spiral angle near the cutting section is steeper, which can enhance chip removal ability and prevent chip accumulation. The spiral chip removal groove is gradually changed to optimize chip flow. The pit is set inside the spiral chip removal groove to force chip breakage, avoid long chip entanglement, and improve processing efficiency.

[0019] (2) This utility model provides a spiral cooling channel inside the drill bit, and the coolant flows along the rotation direction of the drill bit, which enhances the heat exchange efficiency. The coolant is sprayed out through multi-level branched microchannels distributed around the drill bit, which can reduce the cutting temperature and reduce drill bit wear. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the spiral chip removal groove of this utility model;

[0022] Figure 3 This is a cross-sectional view of the present invention;

[0023] Figure 4 This is an enlarged view of Figure A of this utility model;

[0024] In the figure: 1. One-piece molded drill bit body; 11. Cutting section; 12. Transition section; 13. Shank section; 14. Spiral cooling channel; 141. Liquid inlet channel; 142. Multi-level branched microchannel; 111. Main cutting edge; 112. Auxiliary cutting edge; 121. Dent; 122. Spiral chip removal groove. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] This utility model provides a technical solution: such as Figure 1 As shown in this embodiment, an integrated high-efficiency forming drill bit includes an integrated forming drill bit body 1. The integrated forming drill bit body 1 is made of high-hardness alloy or composite material. The drill bit tip of the integrated forming drill bit body 1 is provided with a cutting section 11, and the other end of the integrated forming drill bit body 1 is provided with a shank section 13. A transition section 12 is provided between the cutting section 11 and the shank section 13. The cutting section 11, the transition section 12 and the shank section 13 are integrally formed, and the integral forming avoids breakage at the connection.

[0027] like Figure 1 and Figure 4 As shown, the cutting section 11 includes a main cutting edge 111 and an auxiliary cutting edge 112. The main cutting edge 111 is located at the tip of the drill bit, and the auxiliary cutting edge 112 connects the main cutting edge 111 to the outer edge of the drill bit. The main cutting edge 111 and the auxiliary cutting edge 112 are symmetrically distributed at the tip of the drill bit. The tips of the main cutting edge 111 and the auxiliary cutting edge 112 are treated with a nano-coating. The main cutting edge 111 and the auxiliary cutting edge 112 can reduce burrs in the drill hole and improve the surface finish of the hole wall.

[0028] like Figure 1 and Figure 2As shown, a spiral chip removal groove 122 is provided on the outer side of the transition section 12. The spiral angle of the spiral chip removal groove 122 is 35°-45° in the cutting section 11 and 20°-30° at the front end of the shank section 13. The bottom of the spiral chip removal groove 122 is arc-shaped and the surface is polished. The depth of the spiral chip removal groove 122 gradually decreases from the cutting section 11 to the shank section 13, ending at the front end of the shank section 13. The spiral angle of the spiral chip removal groove 122 is steeper near 11. The helix angle of section 13 is relatively gentle, and the inner wall of the helical chip removal groove 122 is provided with a pit 121. By setting the helical chip removal groove 122 on the drill bit, a continuous chip discharge channel is formed, which improves chip removal efficiency. The helix angle near the cutting section 11 is relatively steep, which can enhance chip removal ability and prevent chip accumulation. The helical chip removal groove 122 is gradually changed to optimize chip flow. The pit 121 is set inside the helical chip removal groove 122 to force chip breakage, avoid long chip entanglement, and improve processing efficiency.

[0029] like Figure 2 and Figure 3 As shown, a spiral cooling channel 14 is provided on the inner side of the transition section 12. The spiral cooling channel 14 is formed synchronously with the spiral chip removal groove 122. A liquid inlet channel 141 is provided at the upper end of the transition section 12 and is connected to the spiral cooling channel 14. A multi-level branched microchannel 142 is provided below the spiral cooling channel 14 and distributed around the drill tip. By setting the spiral cooling channel 14 on the inner side of the drill, the coolant flows along the rotation direction of the drill, enhancing the heat exchange efficiency. The coolant is sprayed out through the multi-level branched microchannel 142 distributed around the drill, which can reduce the cutting temperature and reduce drill wear.

[0030] This utility model provides an integrated high-efficiency forming drill bit, the specific working principle of which is as follows: the main cutting edge 111 and the auxiliary cutting edge 112 can reduce burrs in the drill hole and improve the surface finish of the hole wall. The chips are discharged through 122, and the gradually changing spiral chip removal groove 122 can enhance the chip removal capacity and prevent chip accumulation. In addition, the recess 121 is set inside the spiral chip removal groove 122 to force the chips to break and avoid long chips from entanglement. During the drilling process, the coolant enters the spiral cooling channel 14 through the liquid inlet channel 141. The coolant flows along the rotation direction of the drill bit to enhance the heat exchange efficiency, and is sprayed out through the multi-level branch microchannels 142 distributed around the perimeter, which can reduce the cutting temperature and reduce drill bit wear.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated high performance profile drill bit comprising an integrated profile drill bit body (1), characterized in that: The one-piece molded drill bit body (1) has a cutting section (11) at the tip of the drill bit, and a shank section (13) at the other end of the one-piece molded drill bit body (1). A transition section (12) is provided between the cutting section (11) and the shank section (13). The outer side of the transition section (12) is provided with a spiral chip removal groove (122). The spiral chip removal groove (122) gradually becomes shallower from the cutting section (11) to the shank section (13) and ends at the front end of the shank section (13). The spiral angle of the spiral chip removal groove (122) is steeper near the cutting section (11) and gentler near the shank section (13). The inner wall of the spiral chip removal groove (122) is provided with a pit (121). The inner side of the transition section (12) is provided with a spiral cooling channel (14), which is formed synchronously with the spiral chip removal groove (122). The upper end of the transition section (12) is provided with a liquid inlet channel (141), which is connected to the spiral cooling channel (14). The spiral cooling channel (14) is provided with multi-level branch microchannels (142) below it, which are distributed around the tip of the drill bit.

2. The one-piece high performance forming bit of claim 1, wherein: The cutting section (11) includes a main cutting edge (111) and an auxiliary cutting edge (112). The main cutting edge (111) is located at the tip of the drill bit, and the auxiliary cutting edge (112) connects the main cutting edge (111) to the outer edge of the drill bit. The main cutting edge (111) and the auxiliary cutting edge (112) are symmetrically distributed at the tip of the drill bit.

3. The one-piece high performance forming bit of claim 1, wherein: The helix angle of the helical chip removal groove (122) is 35°-45° in the cutting section (11) and 20°-30° at the front end of the shank section (13).

4. The one-piece high performance forming bit of claim 1, wherein: The bottom of the spiral chip removal groove (122) is arc-shaped and the surface is polished.

5. The one-piece high performance forming bit of claim 1, wherein: The one-piece molded drill bit body (1) is made of high-hardness alloy or composite material.

6. The one-piece high performance forming bit of claim 2, wherein: The tips of the main cutting edge (111) and the auxiliary cutting edge (112) are treated with a nano-coating.

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