Nail cutting drill

Abstract

The utility model discloses a nail cutting drill which comprises a threaded drill bit, a drill body and a handle body. A threaded drill bit is arranged at the front end of the drill body, the surface of the threaded drill bit is in an arc shape, the top of the threaded drill bit is a tip end, drilling threads are arranged on the surface of the threaded drill bit, a chip groove is formed in the drill body, a cutting edge is arranged at the front end of the drill body, and the cutting edge is located on the groove wall of the front end of the chip groove. The cutting edge is connected with the tail end of the drilling thread, and the rear end of the drill body is connected with the handle body. When the threaded drill bit is damaged, the threaded drill bit can be taken down to be replaced, the material drilling efficiency is guaranteed, and the replacement cost of the nail cutting drill is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wood processing tools, and in particular to a nail-cutting drill. Background Technology

[0002] Nail cutters are essential tools for woodworking renovations and demolition. Their cutting heads are made of superhard alloy, meaning they become stronger under strong conditions. When drilling into old wood, if a hidden nail or screw is encountered, it can easily cut or break it, protecting itself and allowing for a smooth drilling process. However, in existing technology, especially when working with old wood containing nails, the threads on the nail cutter's bit can chip when it encounters a nail, preventing normal drilling and necessitating frequent replacements, thus reducing drilling efficiency. Utility Model Content

[0003] According to an embodiment of the present invention, a thread cutting drill is provided, comprising: a thread drill bit, a drill body, and a shank;

[0004] The front end of the drill body is provided with a threaded drill bit. The surface of the threaded drill bit is arc-shaped, and the top of the threaded drill bit is pointed. The surface of the threaded drill bit is provided with drilling threads. The drill body is provided with a chip removal groove. The front end of the drill body is provided with a cutting edge. The cutting edge is located on the front wall of the chip removal groove and receives the end of the drilling thread. The rear end of the drill body is connected to the shank.

[0005] One end of the threaded drill bit is provided with a positioning block, and the front end of the drill body is provided with a positioning groove. The positioning block is inserted into the positioning groove and connected to the drill body.

[0006] Furthermore, the positioning block is provided with a plurality of positioning protrusions, the surface of the positioning protrusions is a smooth arc shape, one side of the positioning block is provided with an directional protrusion, the positioning groove is provided with an directional groove, and the directional groove is provided corresponding to the directional protrusion.

[0007] Furthermore, the thread pitch of the drilled thread is 1.5mm to 3.0mm.

[0008] Furthermore, the tip angle of the cross-section of the drilled thread is 58.5°~61.5°.

[0009] Furthermore, the front end of the drill body is a shovel back, which is spiral ramp-shaped, with the outer side of the shovel back tilting downwards, and the tilt angle of the shovel back is 8°~16°.

[0010] Furthermore, the fan-shaped angle of the shovel back is greater than 180°.

[0011] Further, the outer side of the shovel back is provided with a reinforcing guard plate, the reinforcing guard plate is located on the outer surface of the drill body front end, and the thickness of the reinforcing guard plate is 0.2mm-0.7mm.

[0012] Further, the handle body is provided with an annular groove, and the annular groove is provided with a connecting hole.

[0013] According to the cutting drill, the drill body is rotated, the threaded drill bit is used for drilling the material to be drilled, the threaded drill bit drills a conical hole, the end of the threaded drill bit is matched with the cutting edge, the threaded drill bit and the cutting edge are smoothly connected, the cutting edge is used for cutting around the hole, a specific specification of a round hole is drilled, the cutting chip generated in the drilling process is discharged through the chip removal groove, the cutting chip is prevented from being blocked, the threaded drill bit can be taken down and replaced when the threaded drill bit is damaged, the drilling efficiency of the material is ensured, and the replacement cost of the cutting drill is reduced.

[0014] It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology claimed. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology claimed.

[0016] Figure 2 It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology claimed.

[0017] Figure 3 It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology claimed.

[0018] Figure 4 It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology claimed.

[0019] Figure 5 It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology claimed.

[0020] Figure 6 It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology claimed.

[0021] Figure 7 It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology claimed.

[0022] Figure 8 It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology claimed.

[0023] Figure 9 It is to be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further explanation of the subject technology claimed.

[0024] Figure 10 Figure 1 is a structure diagram of a positioning block of a nail drill according to an embodiment of the present application.

[0025] In the figure, reference numeral 1 is a threaded drill bit, 11 is a drilling thread, 2 is a drill body, 21 is a chip removal groove, 22 is a cutting edge, 23 is a reinforcing guard, 3 is a shank, 31 is an annular groove, 32 is a connecting hole, 4 is a positioning block, 41 is a positioning protrusion, and 42 is a directional protrusion. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings, and the present application will be further described.

[0027] Firstly, the present application will be described in combination with Figures 1-10 a nail drill according to an embodiment of the present application, which is a drilling tool used in woodworking renovation and demolition operations.

[0028] As shown in Figures 1-10 the figure, a nail drill according to an embodiment of the present application comprises a threaded drill bit 1, a drill body 2, and a shank 3.

[0029] The front end of the drill body 2 is provided with the threaded drill bit 1, the surface of the threaded drill bit 1 is arc-shaped, the top of the threaded drill bit 1 is a pointed end, the surface of the threaded drill bit 1 is provided with the drilling thread 11, the drill body 2 is provided with the chip removal groove 21, the front end of the drill body 2 is provided with the cutting edge 22, the cutting edge 22 is located on the front end groove wall of the chip removal groove 21, the cutting edge 22 receives the end of the drilling thread 11, and the rear end of the drill body 2 is connected with the shank 3.

[0030] One end of the threaded drill bit 1 is provided with the positioning block 4, the front end of the drill body is provided with the positioning groove, and the positioning block 4 is inserted into the positioning groove and connected with the drill body.

[0031] The present application rotates the drill body 2 through the shank 3, drills a hole in the material to be drilled through the threaded drill bit 1, drills a conical hole through the threaded drill bit 1, cooperates the end of the drilling thread 11 with the cutting edge 22, smoothly connects the drilling thread 11 with the cutting edge 22, cuts the hole through the cutting edge 22, drills a circular hole of a specific specification, removes the chips generated in the drilling process through the chip removal groove 21, avoids the chips from being blocked, and removes the threaded drill bit 1 for replacement when the threaded drill bit 1 is damaged, thereby ensuring the drilling efficiency of the material and reducing the replacement cost of the nail drill.

[0032] As shown in Figures 9-10As shown, the positioning block 4 is provided with a plurality of positioning protrusions 41, the surface of the positioning protrusions 41 is smooth and arc-shaped, one side of the positioning block 4 is provided with a directional protrusion 42, and the positioning groove is provided with a directional groove corresponding to the directional protrusion 42.

[0033] In this embodiment, the threaded drill bit 1 is positioned by the positioning protrusions 41, the surface of the positioning protrusions 41 is smooth and arc-shaped, so as to avoid damage of the positioning protrusions 41 due to torsion during the punching process, and the directional protrusion 42 is used to determine the installation position of the threaded drill bit 1, so that the thread end of the threaded drill bit 1 corresponds to the position of the cutting edge 22 after installation, and the cutting edge 22 can smoothly cut.

[0034] The connection mode of the corresponding positioning block 4 and the drill body is not limited in this application, and it is conceivable that a bolt can be used to connect the positioning block 4 from the side of the front end of the drill body, and when the threaded drill bit 1 is replaced, the bolt only needs to be removed.

[0035] The thread pitch of the drilling thread 11 is 1mm-3.0mm. The cross-sectional tip angle of the drilling thread 11 is 58.5°-61.5°.

[0036] The front end of the drill body 2 is a backhoe, the backhoe is in the shape of a spiral ramp, the outer side of the backhoe is inclined downward, and the inclination angle of the backhoe is 8°-16°. The fan angle of the backhoe is greater than 180°. The outer side of the backhoe is provided with a reinforcing guard plate, the reinforcing guard plate is located on the outer surface of the front end of the drill body, and the thickness of the reinforcing guard plate is 0.2mm-0.7mm. The included angle of the two sides of the cutting edge 22 is 58°-62°. The edge edge of the cutting edge 22 is parallel to the axis of the drill body 2.

[0037] In this embodiment, the included angle of the two sides of the cutting edge 22 is set, and the reinforcing guard plate 23 is arranged on the outer surface of the front end of the drill body 2, so as to improve the strength of the cutting edge 22, avoid the phenomenon of chipping of the cutting edge when the cutting nail drill hits the iron nail, and ensure that the cutting nail drill can normally drill holes.

[0038] The cross section of the drill body 2 is circular, and in the circular cross section, the area of the chip removal groove 21 is greater than the area of the drill body 2.

[0039] By setting a larger volume of the chip removal groove 21, the chip removal efficiency of the chip removal groove 21 is improved, and the phenomenon of blockage of debris is avoided.

[0040] The handle body 3 is provided with an annular groove 31, and the annular groove 31 is provided with a connecting hole 32.

[0041] In this embodiment, the cutting nail drill can be fixed through the connecting hole 32, and the cutting nail drill can be driven to rotate for drilling.

[0042] The above, with reference to Figures 1-10 The application describes a kind of cutting nail drill according to the embodiments of the utility model, the hole of the material to be drilled is drilled by the threaded drill bit 1 by the handle body 3 rotation drill body 2, threaded drill bit 1 drills out the hole of the hole shape of cone, by the end of drilling thread 11 and cutting edge 22 cooperation, make drilling thread 11 and cutting edge 22 smoothly link, cutting edge 22 is cut around the hole, to drill out the round hole of specific specification, the debris generated in the drilling process is discharged through the chip groove 21, avoid the blockage of debris, when threaded drill bit 1 is damaged, threaded drill bit 1 can be taken down and replaced, guarantee the drilling efficiency of material, reduce the replacement cost of cutting nail drill.

[0043] It should be noted that in the present specification, the terms "comprising", "containing" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment. Without more limitations, the elements defined by the statement "comprising" do not exclude the existence of other identical elements in the process, method, article or equipment including the elements.

[0044] Although the content of the utility model has been introduced in detail by the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and alternatives of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. A nail-cutting drill, characterized in that, include: Threaded drill bit, drill body, and shank; The front end of the drill body is provided with a threaded drill bit. The surface of the threaded drill bit is arc-shaped, and the top of the threaded drill bit is pointed. The surface of the threaded drill bit is provided with drilling threads. The drill body is provided with a chip removal groove. The front end of the drill body is provided with a cutting edge. The cutting edge is located on the front wall of the chip removal groove and receives the end of the drilling thread. The rear end of the drill body is connected to the shank. One end of the threaded drill bit is provided with a positioning block, and the front end of the drill body is provided with a positioning groove. The positioning block is inserted into the positioning groove and connected to the drill body.

2. The nail-cutting drill as described in claim 1, characterized in that, The positioning block has several positioning protrusions with smooth arc surfaces. One side of the positioning block has an directional protrusion, and the positioning groove has an directional groove corresponding to the directional protrusion.

3. A nail-cutting drill as described in claim 1, characterized in that, The thread pitch of the drilled thread is 1.5mm to 3.0mm.

4. A nail-cutting drill as described in claim 1, characterized in that, The tip angle of the drilled thread section is 58.5°~61.5°.

5. A nail-cutting drill as described in claim 1, characterized in that, The front end of the drill body is a shovel back, which is spiral ramp-shaped. The outer side of the shovel back slopes downward, and the slope angle of the shovel back is 8°~16°.

6. A nail-cutting drill as described in claim 5, characterized in that, The fan-shaped angle of the shovel back is greater than 180°.

7. A nail-cutting drill as described in claim 5, characterized in that, The outer side of the shovel back is provided with a reinforcing guard plate, which is located on the outer surface of the front end of the drill body, and the thickness of the reinforcing guard plate is 0.2mm~0.7mm.

8. A nail-cutting drill as described in claim 1, characterized in that, The handle has an annular groove, and a connecting hole is formed in the annular groove.

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