Novel thin plate w-shaped drill bit

Abstract

A novel thin plate w-shaped drill bit is characterized by comprising a w-shaped drill bit body, a cutting part is arranged at the front end of the w-shaped drill bit body, a guide part is arranged at the rear end of the cutting part, an installation part is arranged at the rear end of the guide part, a positioning drill core is arranged in the center of the most front end of the cutting part, and an auxiliary flat angle is arranged on the outer side of the positioning drill core. A main cutting edge is arranged on the outer side of the auxiliary flat angle, spiral grooves are evenly formed in the outer side of the guide part, spiral groove edges are arranged on the outer sides of the spiral grooves, and chip removal guide grooves are formed in the inner sides of the spiral grooves. The drill bit has the advantages that the stability when the drill bit cuts into a workpiece is guaranteed, the punching quality is guaranteed, and the service life of the drill bit is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of thin plate drill bit technology, and in particular to a novel thin plate W-type drill bit. Background Technology

[0002] Thin plate drill bits are a type of drill bit specifically designed for drilling through thin plate materials. They work by cutting the material through rotation and forward propulsion. Thin plate drill bits are typically made of carbide or high-speed steel and have sharp cutting edges. When using thin plate drill bits, it is necessary to select an appropriate drill diameter and adjust the drill rotation speed and feed rate according to the thickness and hardness of the material.

[0003] Patent No. CN202322652814.0 discloses a tapping drill bit suitable for thin plates, including a connecting rod. The bottom of the outer wall of the connecting rod is provided with a drill bit for drilling. The drill bit and the connecting rod are connected by a fixing component. The outer wall of the connecting rod and the upper part of the drill bit are provided with a tapping component for tapping. In this utility model, the drill bit is connected to the connecting rod through a connecting plug and a connecting slot. The arc-shaped block is connected through an upper fixing block, a lower fixing block and a fixing groove, and is fixed to the outer wall of the connecting rod by a locking bolt. As can be seen from the above method, when the tapping block is damaged or the arc-shaped block does not meet the requirements, the personnel can remove and replace the arc-shaped block, so that the personnel do not need to prepare multiple tapping drill bits for use. However, this drill bit has the following problems: firstly, the drilling process of this drill bit is unstable; secondly, the front end of the drill bit gets hot during the drilling process and cannot be internally cooled. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by setting an auxiliary flat angle on the outside of the positioning drill core to solve the technical problem of instability in the drilling process of the drill bit, and by setting an internal cooling heat pipe in the center of the drill bit to solve the technical problem of the drill bit tip getting hot and unable to be internally cooled during the drilling process.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A novel thin-plate W-type drill bit, characterized in that: it includes a W-type drill bit body, a cutting section at the front end of the W-type drill bit body, a guide section at the rear end of the cutting section, a mounting section at the rear end of the guide section, a positioning drill core at the center of the front end of the cutting section, an auxiliary flat angle on the outer side of the positioning drill core, a main cutting edge on the outer side of the auxiliary flat angle, and a spiral groove evenly distributed on the outer side of the guide section, with spiral groove edges on the outer side of each spiral groove, and chip removal guide grooves on the inner side of each spiral groove.

[0007] As a preferred embodiment, the W-shaped drill bit has a channel at its center, and the channel is equipped with an internal cooling heat pipe.

[0008] As a preferred embodiment, the outer side of the internal cooling heat pipe is provided with a seamless copper tube, the inner side of the seamless copper tube is provided with a liquid-absorbing core layer, the inner side of the liquid-absorbing core layer is provided with a vacuum channel, and the vacuum channel is filled with refrigerant.

[0009] As a preferred embodiment, the auxiliary flat angles are all lower than the height of the positioning drill core.

[0010] As a preferred embodiment, the outer side of the main cutting edge is provided with a working surface, the upper end of the main cutting edge is provided with a cutting tip, and a side cutting surface is provided between the working surface and the cutting tip.

[0011] As another preferred option, the side cutting surface is generally rough.

[0012] The beneficial effects of this utility model are:

[0013] (1) In this utility model, by setting an auxiliary flat angle on the outside of the positioning drill core, the stability of the positioning drill core cutting into the workpiece is enhanced. Due to the characteristics of thin plate material, the positioning drill core alone will be unstable, resulting in unstable hole quality. The auxiliary flat angle can stabilize the upper surface of the workpiece after the positioning drill core cuts into the workpiece, ensuring stability when cutting into the workpiece and ensuring the quality of drilling.

[0014] (2) In this utility model, the internal cooling heat pipe of the W-shaped drill bit achieves the effect of internal self-cooling of the cutting part. As the drill bit rotates continuously, friction will cause wear on the surface of the cutting part and generate a lot of heat, which will cause the drill bit to overheat and be damaged. When the front end of the cutting part gets hot, the upper end of the internal cooling heat pipe is at the cold end. When the front end of the internal cooling heat pipe receives the high temperature of the cutting part, the internal refrigerant will vaporize. The vapor will flow to the cold end and release heat at the cold end, condensing into liquid. The condensed liquid returns to the hot end through the capillary action of the liquid-absorbing core layer, completing a cycle, thereby dissipating the heat of the cutting part to the upper end, avoiding the cutting part from overheating and increasing the service life of the drill bit.

[0015] (3) In this utility model, the side cutting surface is set to be rough, which solves the problem of large roughness of the hole wall. After the main cutting edge cuts the workpiece hole, the side cutting surface will advance downward and use the overall rough surface to rub and polish the hole wall, making the hole wall surface smooth and ensuring the quality of drilling.

[0016] In summary, this drill bit has the advantages of ensuring stability when cutting into the workpiece, ensuring drilling quality, and extending the service life of the drill bit, making it particularly suitable for the field of thin plate drill bit technology. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 This is an enlarged structural diagram of point A in this utility model.

[0020] Figure 3 This is a schematic diagram showing the location of the internal cooling heat pipe in this utility model.

[0021] Figure 4 This is a schematic diagram of the internal structure of the internal cooling heat pipe in this utility model.

[0022] Figure 5 This is a schematic diagram of the main cutting edge structure in this utility model. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0024] Example 1

[0025] like Figures 1 to 5 As shown, this utility model provides a novel thin-plate W-shaped drill bit, characterized in that: it includes a W-shaped drill bit body 10, the front end of the W-shaped drill bit body 10 is provided with a cutting part 1, the rear end of the cutting part 1 is provided with a guide part 2, the rear end of the guide part 2 is provided with a mounting part 3, the center of the front end of the cutting part 1 is provided with a positioning drill core 11, the outer side of the positioning drill core 11 is provided with an auxiliary flat angle 12, the outer side of the auxiliary flat angle 12 is provided with a main cutting edge 13, and the outer side of the guide part 2 is uniformly provided with spiral grooves 21, the outer side of the spiral grooves 21 is provided with spiral groove edges 22, and the inner side of the spiral grooves 21 is provided with chip removal guide grooves 23.

[0026] Furthermore, the W-shaped drill bit 10 has a channel in the center inside, and the channel is equipped with an internal cooling heat pipe 3, which plays a self-cooling role when the cutting part 1 gets hot. The internal cooling heat pipe 3 has high overall strength and can also provide internal upright support for the drill bit.

[0027] Furthermore, a seamless copper tube 31 is provided on the outer side of the inner cooling heat pipe 3, and a liquid-absorbing core layer 32 is provided on the inner side of the seamless copper tube 31. A vacuum channel 33 is provided on the inner side of the liquid-absorbing core layer 32. The vacuum channel 33 is filled with refrigerant. As the drill bit rotates continuously, friction will cause wear on the surface of the cutting part 1, and at the same time, it will generate a lot of heat, which will cause the drill bit to overheat and be damaged. When the front end of the cutting part 1 gets hot, the upper end of the inner cooling heat pipe 3 is at the cold end. When the front end of the inner cooling heat pipe 3 receives the high temperature of the cutting part 1, the refrigerant inside will vaporize. The vapor will flow to the cold end and release heat at the cold end, condensing into liquid. The condensed liquid returns to the hot end through the capillary action of the liquid-absorbing core layer 32, completing a cycle, thereby dissipating the heat of the cutting part 1 to the upper end, avoiding overheating of the cutting part, and extending the service life of the drill bit.

[0028] Furthermore, the auxiliary flat angles 12 are all lower than the height of the positioning drill core 11. The auxiliary flat angles 12 can stabilize the upper surface of the workpiece after the positioning drill core 11 cuts into the workpiece, ensuring stability when cutting into the workpiece and ensuring the quality of drilling.

[0029] Furthermore, a working surface 132 is provided on the outer side of the main cutting edge 13, a cutting tip 131 is provided at the upper end of the main cutting edge 13, and a side cutting surface 133 is provided between the working surface 132 and the cutting tip 131.

[0030] Furthermore, the side cutting surface 133 is an overall rough surface. After the main cutting edge 13 cuts the workpiece hole, the side cutting surface 133 will advance downwards and use the overall rough surface to rub and polish the hole wall, making the surface of the hole wall smooth and ensuring the quality of drilling.

[0031] Working process: First, the mounting part of the W-type drill bit body 10 is installed on the external device. Then, the positioning drill core 11 cuts into the workpiece for positioning. Next, the auxiliary flat angle 12 can stabilize the upper surface of the workpiece after the positioning drill core 11 cuts into the workpiece. Then, the W-type drill bit body 10 is continuously rotated by the driving force of the external device to drill holes in the workpiece. The spiral groove 21 and the chip removal guide groove 23 allow the chips generated during the cutting process to be smoothly discharged upwards. At the same time, as the drill bit rotates continuously, friction will cause wear on the surface of the cutting part 1 and generate a lot of heat. When the front end of the cutting part 1 gets hot, the upper end of the internal cooling heat pipe 3 is at the cold end. When the front end of the internal cooling heat pipe 3 receives the high temperature of the cutting part, the internal refrigerant will vaporize. The vapor will flow to the cold end and release heat at the cold end, condensing into liquid. The condensed liquid returns to the hot end through the capillary action of the liquid absorption core layer 32, completing a cycle, thereby dissipating the heat of the cutting part 1 to the upper end and preventing the cutting part 1 from getting too hot.

[0032] Secondly, after the main cutting edge 13 cuts the workpiece hole, the side cutting edge 133 will advance downwards and use the overall rough surface to rub and polish the hole wall, making the hole wall surface smooth and ensuring the quality of drilling.

[0033] In the description of this utility model, it should be understood that the terms "front and back", "left and right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0034] Of course, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0035] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A novel thin-plate W-type drill bit, characterized in that: The drill bit includes a W-shaped drill body (10), which has a cutting part (1), a guide part (2) at the rear end of the cutting part (1), and a mounting part (3) at the rear end of the guide part (2). The cutting part (1) has a positioning drill core (11) at the center of its foremost end. The positioning drill core (11) has an auxiliary flat angle (12) on its outer side. The auxiliary flat angle (12) has a main cutting edge (13) on its outer side. The guide part (2) has a spiral groove (21) evenly distributed on its outer side. The spiral groove (21) has a spiral groove edge (22) on its outer side. The spiral groove (21) has a chip removal guide groove (23) on its inner side.

2. The novel thin-plate W-type drill bit according to claim 1, characterized in that, The W-shaped drill bit (10) has a channel in the center inside, and the channel is equipped with an internal cooling heat pipe (3).

3. A novel thin-plate W-type drill bit according to claim 2, characterized in that, The inner cooling heat pipe (3) is provided with a seamless copper pipe (31) on the outside, and a liquid-absorbing core layer (32) is provided on the inside of the seamless copper pipe (31). A vacuum channel (33) is provided on the inside of the liquid-absorbing core layer (32), and the vacuum channel (33) is filled with refrigerant.

4. A novel thin-plate W-type drill bit according to claim 1, characterized in that, The auxiliary flat angles (12) are all lower than the height of the positioning drill core (11).

5. A novel thin-plate W-type drill bit according to claim 1, characterized in that, The main cutting edge (13) has a working surface (132) on its outer side, and a cutting tip (131) is provided at the upper end of the main cutting edge (13). A side cutting surface (133) is provided between the working surface (132) and the cutting tip (131).

6. A novel thin-plate W-type drill bit according to claim 5, characterized in that, The side cutting surface (133) is generally rough.

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