Multifunctional bottoming drill

Abstract

The utility model relates to a multifunctional bottoming drill which comprises a drill handle and a drill bit body, the drill handle and the drill bit body are fixedly connected together, a first spiral blade body and a second spiral blade body are arranged on the drill bit body, and the drill bit body is provided with a symmetry axis. The first spiral blade body and the second spiral blade body spirally extend anticlockwise or clockwise around the symmetry axis, and the first spiral blade body and the second spiral blade body intersect together. The first spiral blade body is provided with a first end face, the second spiral blade body is provided with a second end face, the first end face and the second end face are connected together, the first end face and the second end face are aligned to form a plane, and the vertical section of the plane is linear.

Description

Technical Field

[0001] This utility model relates to the field of drill bits, specifically to a multifunctional flat-bottom drill. Background Technology

[0002] Currently, most drill bits on the market are equipped with a pointed tip. This type of drill bit has a narrow range of applications and cannot drill on any surface, such as curved surfaces, bevels, semi-circular holes, etc. The drilling effect of this type of drill bit on these surfaces is generally poor. Therefore, the drilling performance of this type of drill bit is not good, and it is only suitable for enlarging holes. Moreover, the resistance during the drilling process is large, and the cutting edge cannot be discharged in time, which can easily cause blockage. In addition, this type of drill bit is directly coated after production without post-treatment of the cutting edge fluid passivation, resulting in a low surface finish after machining. Summary of the Invention

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a multifunctional flat-bottom drill.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a multifunctional flat-bottom drill, comprising: a drill shank and a drill bit body, wherein the drill shank and the drill bit body are fixedly connected together, the drill bit body is provided with a first helical cutting edge and a second helical cutting edge, the drill bit body has an axis of symmetry, the first helical cutting edge and the second helical cutting edge extend counterclockwise or clockwise around the axis of symmetry, and the first helical cutting edge and the second helical cutting edge intersect together; the first helical cutting edge has a first end face, the second helical cutting edge has a second end face, the first end face and the second end face are connected together, and the first end face and the second end face are aligned to form a plane, the vertical cross-section of the plane being in the shape of a line.

[0005] Furthermore, the first helical blade body includes a first helical blade body base and a first cutting edge, the first cutting edge and the first helical blade body base being fixedly connected together; the second helical blade body includes a second helical blade body base and a second cutting edge, the second cutting edge and the second helical blade body base being fixedly connected together.

[0006] Furthermore, the first spiral blade also includes a first cutting edge, which is disposed on the base of the first spiral blade and is fixedly connected to the first cutting edge, and the first cutting edge is aligned with the first cutting edge and the first end face.

[0007] Furthermore, the second spiral blade also includes a second cutting edge, which is disposed on the base of the second spiral blade and is fixedly connected to the second cutting edge, and the second cutting edge is aligned with the second cutting edge and the second end face.

[0008] Furthermore, the flat-bottom drill is also provided with a first cutting groove and a second cutting groove. The first cutting groove is located between the first spiral cutting body and the second spiral cutting body, and the second cutting groove is located between the first spiral cutting body and the second spiral cutting body. The first cutting groove and the second cutting groove are located on both sides of the first spiral cutting body, and the first cutting groove and the second cutting groove are located on both sides of the second spiral cutting body.

[0009] Furthermore, the outer surfaces of the first and second cutting grooves are polished.

[0010] Furthermore, the flat-bottom drill is also equipped with a first arc-shaped structure and a second arc-shaped structure.

[0011] The beneficial effects of this application are: the multi-functional flat-bottom drill provided by this application has a simple structure and is easy to process. This flat-bottom drill can directly drill holes on any surface, such as curved surfaces, inclined surfaces, semi-circular holes, etc., and can replace drill tips for hole machining operations; the structure of this tool is slightly more complex than that of drill tips, making it difficult to imitate, and the drilling effect is greatly related to the structure, while its efficiency and lifespan are comparable to those of drill tips; it can be used for pre-drilled holes, which is convenient and quick, and its slag removal and cutting volume are superior to those of reamers. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of a multifunctional flat-bottom drill provided by this utility model.

[0013] Figure 2 for Figure 1 The image shown is a partial enlarged view of a multifunctional flat-bottom drill.

[0014] Figure 3 for Figure 1 Another enlarged view of a multifunctional flat-bottom drill is shown.

[0015] Figure 4 Another structural schematic diagram of a multifunctional flat-bottom drill provided by this utility model. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0017] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0018] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0019] Please refer to Figure 1-4 This application provides a multifunctional flat-bottom drill (hereinafter referred to as "the flat-bottom drill"), which includes: a drill shank 1 and a drill bit body 2. The drill shank 1 and the drill bit body 2 are fixedly connected together. The drill bit body 2 is provided with a first helical cutting edge 3 and a second helical cutting edge 4. The drill bit body 2 has a symmetry axis 7. The first helical cutting edge 3 and the second helical cutting edge 4 extend counterclockwise or clockwise around the symmetry axis 7 and intersect together. The first helical cutting edge 3 has a first end face 32 and the second helical cutting edge 4 has a second end face 42. The first end face 32 and the second end face 42 are connected together and aligned to form a plane 5. The vertical cross-section of the plane 5 is in the shape of a line.

[0020] In one embodiment of this application, the first spiral blade body 3 includes a first spiral blade body base 30 and a first cutting edge 31, the first cutting edge 30 and the first spiral blade body base 30 being fixedly connected together; the second spiral blade body 4 includes a second spiral blade body base 40 and a second cutting edge 41, the second cutting edge 41 and the second spiral blade body base 40 being fixedly connected together.

[0021] In one embodiment of this application, the first spiral blade body 3 further includes a first cutting edge 33, which is disposed on the first spiral blade body base 30, and the first cutting edge 33 and the first blade 31 are fixedly connected together, and the first cutting edge 33 and the first blade 31 are aligned, and the first cutting edge 33 and the first end face 32 are aligned.

[0022] In one embodiment of this application, the second helical blade 4 further includes a second cutting edge 43, which is disposed on the second helical blade base 40. The second cutting edge 43 and the second cutting edge 41 are fixedly connected together, and the second cutting edge 43 is aligned with the second cutting edge 41 and the second end face 42. The first and second cutting edges increase the probability of chipping resistance of the cutting edge, making cutting easier and improving the probability of handling intermittent machining.

[0023] In one embodiment of this application, the flat-bottom drill is further provided with a first cutting groove 8 and a second cutting groove 9. The first cutting groove 8 is located between the first spiral cutting body 3 and the second spiral cutting body 4, and the second cutting groove 9 is located between the first spiral cutting body 3 and the second spiral cutting body 4. The first cutting groove 8 and the second cutting groove 9 are located on both sides of the first spiral cutting body 3, and the first cutting groove 8 and the second cutting groove 9 are located on both sides of the second spiral cutting body 4.

[0024] In one embodiment of this application, the outer surfaces of the first cutting groove 8 and the second cutting groove 9 are polished. The first and second cutting grooves increase the cutting space, making slag removal smooth.

[0025] In one embodiment of this application, the flat-bottom drill is further provided with a first arc-shaped structure 10 and a second arc-shaped structure 11. The first arc-shaped structure 10 and the second arc-shaped structure 11 are a cuttings-breaking XR structure, which makes the borehole more durable and the cuttings removal smoother. Here, XR structure refers to a structure that... Figure 4 The structure in the image looks like an XR, so it was named the XR structure.

[0026] The multi-functional flat-bottom drill provided in this application has a simple structure and is easy to manufacture. It can drill directly on any surface, such as curved surfaces, inclined surfaces, and semi-circular holes, and can replace drill tips for hole machining. The structure of this tool is slightly more complex than that of drill tips, making it difficult to imitate. The drilling effect is greatly related to the structure, and its efficiency and lifespan are comparable to those of drill tips. It can be used for pre-drilled holes, which is convenient and quick. Its slag removal and cutting volume are superior to those of reamers.

[0027] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A multifunctional flat-bottom drill, characterized in that, include: The drill bit body comprises a drill shank and a drill bit body, the drill shank and the drill bit body being fixedly connected together. The drill bit body is provided with a first helical cutting edge and a second helical cutting edge. The drill bit body has an axis of symmetry, and the first helical cutting edge and the second helical cutting edge extend counterclockwise or clockwise around the axis of symmetry, and the first helical cutting edge and the second helical cutting edge intersect together. The first helical cutting edge has a first end face, and the second helical cutting edge has a second end face. The first end face and the second end face are connected together and aligned to form a plane. The vertical cross-section of the plane is in the shape of a straight line.

2. The multifunctional flat-bottom drill according to claim 1, characterized in that, The first spiral blade body includes a first spiral blade body base and a first cutting edge, the first cutting edge and the first spiral blade body base are fixedly connected together; the second spiral blade body includes a second spiral blade body base and a second cutting edge, the second cutting edge and the second spiral blade body base are fixedly connected together.

3. The multifunctional flat-bottom drill according to claim 2, characterized in that, The first spiral blade also includes a first cutting edge, which is disposed on the base of the first spiral blade and is fixedly connected to the first cutting edge. The first cutting edge is aligned with the first cutting edge and is aligned with the first end face.

4. The multifunctional flat-bottom drill according to claim 3, characterized in that, The second spiral blade also includes a second cutting edge, which is disposed on the base of the second spiral blade and is fixedly connected to the second cutting edge. The second cutting edge is aligned with the second cutting edge and the second end face is aligned with the second cutting edge.

5. The multifunctional flat-bottom drill according to claim 4, characterized in that, The flat-bottom drill is also provided with a first cutting groove and a second cutting groove. The first cutting groove is located between the first spiral cutting body and the second spiral cutting body, and the second cutting groove is located between the first spiral cutting body and the second spiral cutting body. The first cutting groove and the second cutting groove are located on both sides of the first spiral cutting body, and the first cutting groove and the second cutting groove are located on both sides of the second spiral cutting body.

6. The multifunctional flat-bottom drill according to claim 5, characterized in that, The outer surfaces of the first and second cutting grooves are polished.

7. The multifunctional flat-bottom drill according to claim 6, characterized in that, The flat-bottom drill is also equipped with a first arc-shaped structure and a second arc-shaped structure.

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