Hexagonal handle reamer

Abstract

The utility model discloses a hexagonal handle reamer which comprises a hexagonal handle part, a reamer head and a cutting edge, the tool bit comprises a nose cone tip, a drilling section and a reaming blade section; the drilling section is provided with a large-diameter end and a small-diameter end, the nose cone tip is arranged at the small-diameter end, a first end of the reaming blade section is connected with the large-diameter end of the drilling section, a second end of the reaming blade section is connected with the hexagonal handle part, cutting blades are arranged on the drilling section and the reaming blade section, and the cutting blades are circumferentially arranged on the drilling section and the reaming blade section. The cutting edges are spirally arranged on the surfaces of the drilling section and the reaming edge sections, and a chip groove is formed between every two adjacent reaming edge sections. According to the utility model, the loss of the reamer in the punching process can be reduced, and the service life of the reamer is ensured.

Description

Technical Field

[0001] This utility model relates to the field of reamer technology, and in particular to a hexagonal shank reamer. Background Technology

[0002] A hexagonal shank reamer is a hole-finishing tool with a hexagonal shank. This design allows for direct clamping with a standard wrench, providing reliable clamping and excellent anti-rotation performance, making it particularly suitable for manual operation and repair work. It is primarily used for calibrating pre-drilled holes, significantly improving hole dimensional accuracy and surface finish. It is an economical and practical key tool in fitter assembly and small-batch production. In existing technologies, the reamer tip diameter remains constant. While this tip can directly drill holes of the required diameter, it generates heat during drilling, resulting in significant wear and tear on the reamer and affecting its lifespan. Summary of the Invention

[0003] According to an embodiment of the present invention, a hexagonal shank reamer is provided, comprising: a hexagonal shank, a cutting head, a cutting edge, and a cooling system;

[0004] The cutting head includes: a cone tip, a drilling section, and a reaming section;

[0005] The drilling section has a large-diameter end and a small-diameter end. The tip of the head cone is located at the small-diameter end. The first end of the reaming section is connected to the large-diameter end of the drilling section. The second end of the reaming section is connected to the hexagonal shank. Both the drilling section and the reaming section are provided with cutting edges. The cutting edges are arranged circumferentially on the drilling section and the reaming section. The cutting edges are spirally arranged on the surface of the drilling section and the reaming section. Chip removal grooves are provided between two adjacent reaming sections.

[0006] The cooling system is located inside the hexagonal shank and the cutting head. Cooling holes are provided on the wall of the chip removal groove. The cooling holes are connected to the cooling system. During the drilling process, the lubricating oil in the cooling system flows out from the cooling holes.

[0007] Furthermore, the tilt angle of one side surface of the drilled section is 3°~8°.

[0008] Furthermore, the helix angle of the cutting edge is 6°~20°.

[0009] Furthermore, the cutting edge includes: a first cutting edge and a second cutting edge;

[0010] The first cutting edge is located on the drilling section, and the second cutting edge is located on the reaming section.

[0011] Furthermore, the outer surface of the first cutting edge is tapered, the angle of the tapering is 5°~18°, and the right side of the cross-section of the first cutting edge is inclined, the angle between the right side and the vertical plane is -5°~5°.

[0012] Furthermore, the outer surface of the second cutting edge is spirally arranged, the spiral angle is 6°~20°, and the right side of the cross-section of the second cutting edge is inclined, the angle between the right side and the vertical plane is -5°~10°.

[0013] Furthermore, the outer surface of the second cutting edge is provided with a cutting edge band, the width of which is 0.1cm to 0.4cm.

[0014] Furthermore, the hexagonal handle is in the shape of a regular hexagon, and a groove is provided on the hexagonal handle.

[0015] Furthermore, the cooling system includes: an oil reservoir, an oil supply pipe, and an oil drain pipe;

[0016] The oil storage chamber is located in the hexagonal handle. One end of the oil storage chamber is connected to the oil injection pipe, and the other end is connected to the oil delivery pipe. The oil delivery pipe is located in the cutter head, and several oil discharge pipes are connected to the oil delivery pipe. The oil discharge pipes are connected to the cooling holes on the wall of the chip removal groove.

[0017] Furthermore, the oil drain pipe includes: a guide section, an oil outlet section, and a one-way valve;

[0018] One end of the guide section is connected to the oil supply pipe and the other end is connected to the oil outlet section. One end of the oil outlet section is connected to the cooling hole. Both the guide section and the oil outlet section are arc-shaped and have opposite arc directions. The one-way valve is located at the connection between the guide section and the oil outlet section and is used to allow the lubricating oil in the guide section to enter the oil outlet section.

[0019] According to an embodiment of this utility model, a hexagonal shank reamer is provided. The hexagonal shank drives the cutter head to rotate. The tip of the head cone first contacts the material to be drilled and positions it. The cutting edge on the drilling section drills the hole, gradually increasing the diameter of the hole. The reaming section forms a cylindrical hole. During the drilling process, the lubricating oil in the cooling system reaches the surface of the cutter head through the cooling hole to lubricate and cool the cutter head, reducing wear on the reamer during the drilling process and ensuring the service life of the reamer.

[0020] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0021] Figure 1 This is a structural diagram of a hexagonal shank reamer according to an embodiment of the present utility model;

[0022] Figure 2 This is a side view of a hexagonal shank reamer according to an embodiment of the present utility model;

[0023] Figure 3This is a cross-sectional view of the first cutting edge of a hexagonal shank reamer according to an embodiment of the present invention;

[0024] Figure 4 This is a cross-sectional view of the second cutting edge of a hexagonal shank reamer according to an embodiment of the present invention;

[0025] Figure 5 This is a cross-sectional view of the hexagonal shank of a hexagonal shank reamer according to an embodiment of the present invention;

[0026] Figure 6 This is a structural diagram of a cooling system for a hexagonal shank reamer according to an embodiment of the present invention.

[0027] The attached figures are labeled as follows: 1 is the hexagonal shank, 2 is the tip of the cone, 3 is the drilling section, 4 is the reaming section, 5 is the first cutting edge, 6 is the second cutting edge, 7 is the groove, 8 is the oil storage chamber, 9 is the oil supply pipe, and 10 is the oil discharge pipe. Detailed Implementation

[0028] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0029] First, combine Figures 1-6 This invention describes a hexagonal shank reamer according to an embodiment of the present invention, used for cutting drill holes.

[0030] like Figures 1-6 As shown, an embodiment of the present invention provides a hexagonal shank reamer, comprising: a hexagonal shank 1, a cutting head and a cutting edge, and a cooling system;

[0031] The cutting head includes: a head cone tip 2, a drilling section 3, and a reaming section 4;

[0032] The drilling section 3 has a large-diameter end and a small-diameter end. The head cone tip 2 is located at the small-diameter end. The first end of the reaming section 4 is connected to the large-diameter end of the drilling section. The second end of the reaming section 4 is connected to the hexagonal shank 1. Both the drilling section 3 and the reaming section 4 are provided with cutting edges. The cutting edges are arranged circumferentially on the drilling section 3 and the reaming section 4. The cutting edges are spirally arranged on the surface of the drilling section and the reaming section 4. A chip removal groove is provided between two adjacent reaming sections 4.

[0033] The cooling system is located inside the hexagonal shank 1 and the cutting head. Cooling holes are provided on the groove wall of the chip removal groove. The cooling holes are connected to the cooling system. During the drilling process, the lubricating oil in the cooling system flows out from the cooling holes.

[0034] This application uses a hexagonal shank 1 to drive the cutter head to rotate. The tip 2 of the head cone first contacts the material to be drilled and positions it. The cutting edge on the drilling section 3 drills the hole, gradually increasing the diameter of the hole. The reaming section 4 forms a cylindrical hole. During the drilling process, the lubricating oil in the cooling system reaches the surface of the cutter head through the cooling hole to lubricate and cool the cutter head, reducing the wear on the reamer during the drilling process and ensuring the service life of the reamer.

[0035] like Figure 1 As shown, the inclination angle of one side of the drilled section 3 is 3°~8°. The helix angle of the cutting edge is 6°~20°.

[0036] In this embodiment, the diameter of the hole is gradually increased by the drilling section 3 during the drilling process, and the drilling efficiency is improved by the spirally arranged cutting edge.

[0037] like Figures 2-4 As shown, the cutting edge includes: a first cutting edge 5 and a second cutting edge 6;

[0038] The first cutting edge 5 is provided on the drilling section 3, and the second cutting edge 6 is provided on the reaming section 4.

[0039] like Figure 3 The figure shows a cross-sectional view of the first cutting edge 5. The outer surface of the first cutting edge 5 is tapered, and the angle of the tapered angle is 5° to 18°. The right side of the cross-section of the first cutting edge 5 is inclined, and the angle between the right side and the vertical plane is -5° to 5°.

[0040] like Figure 4 The figure shows a cross-sectional view of the second cutting edge 6. The outer surface of the second cutting edge 6 is spirally arranged with a spiral angle of 6° to 20°. The right side of the cross-section of the second cutting edge 6 is inclined, and the angle between the right side and the vertical plane is -5° to 10°.

[0041] The outer surface of the second cutting edge 6 is provided with a cutting edge band, the width of which is 0.1cm to 0.4cm.

[0042] In this embodiment, by setting the outer surface of the first cutting edge 5 to be tapered and the right side face of the first cutting edge 5 to be inclined, the drilling efficiency of the first cutting edge 5 can be effectively improved. Similarly, by setting the outer surface of the second cutting edge 6 to be inclined and the right side face of the second cutting edge 6 to be inclined, the drilling efficiency of the second cutting edge 6 can be effectively improved. This, in turn, improves the drilling efficiency of the reamer.

[0043] The hexagonal handle 1 is in the shape of a regular hexagon, and a groove 7 is provided on the hexagonal handle 1.

[0044] The cooling system includes: an oil storage chamber 8, an oil supply pipe 9, and an oil discharge pipe 10;

[0045] The oil storage chamber 8 is located in the hexagonal handle. One end of the oil storage chamber 8 is connected to the oil injection pipe, and the other end is connected to the oil delivery pipe 9. The oil delivery pipe 9 is located in the cutter head. Several oil discharge pipes 10 are connected to the oil delivery pipe 9. The oil discharge pipes 10 are connected to the cooling holes on the wall of the chip removal groove.

[0046] The oil drain pipe 10 includes: a guide section, an oil outlet section, and a one-way valve;

[0047] One end of the guide section is connected to the oil supply pipe 9 and the other end is connected to the oil outlet section. One end of the oil outlet section is connected to the cooling hole. Both the guide section and the oil outlet section are arc-shaped and have opposite arc directions. The one-way valve is located at the connection between the guide section and the oil outlet section and is used to allow the lubricating oil in the guide section to enter the oil outlet section.

[0048] In this embodiment, during the drilling process, the rotation of the reamer generates centrifugal force. The lubricating oil in the oil supply pipe 9 enters the guide section under the action of centrifugal force. The thrust generated by the centrifugal force allows the lubricating oil to enter the oil outlet section through the one-way valve. By making the arc direction of the guide section and the oil outlet section different, the speed of the lubricating oil leaving the oil outlet section can be slowed down, so that the lubricating oil adheres to the cutting head, thereby lubricating and cooling the cutting head.

[0049] Above, refer to Figures 1-6 This application describes a hexagonal shank reamer according to an embodiment of the present invention. The hexagonal shank 1 drives the cutter head to rotate. The tip 2 of the head cone first contacts the material to be drilled and positions it. The cutting edge on the drilling section 3 drills the hole, gradually increasing the diameter of the hole. The reaming section 4 forms a cylindrical hole. During the drilling process, the lubricating oil in the cooling system reaches the surface of the cutter head through the cooling hole to lubricate and cool the cutter head, reducing wear on the reamer during the drilling process and ensuring the service life of the reamer.

[0050] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0051] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A six-fluted arbor reamer, characterized in that, The utility model relates to a six square handle, tool head, cutting edge and cooling system are included: The tool head includes: head cone top, drill hole section and hinge blade section; The drill hole section has a large diameter end and a small diameter end, the head cone top is arranged at the small diameter end, the first end of the hinge blade section is connected with the large diameter end of the drill hole section, the second end of the hinge blade section is connected with the six square handle, the cutting edge is arranged on the drill hole section and the hinge blade section, the cutting edge is circumferentially arranged on the drill hole section and the hinge blade section, the cutting edge is helically arranged on the surface of the drill hole section and the hinge blade section, and a chip groove is arranged between two adjacent hinge blade sections; The cooling system is arranged in the six square handle and the tool head, the groove wall of the chip groove is provided with a cooling hole, the cooling hole is communicated with the cooling system, and lubricating oil in the cooling system flows out from the cooling hole during the drilling process. The single-side surface of the drill hole section is inclined at an angle of 3-8 degrees.

2. A hexagonal shank reamer according to claim 1, wherein The helix angle of the cutting edge is 6-20 degrees.

3. The hexagonal shank reamer according to claim 1, wherein The cutting edge includes: first cutting edge and second cutting edge; 4. The hexagonal shank reamer according to claim 1, wherein The first cutting edge is arranged on the drill hole section, and the second cutting edge is arranged on the hinge blade section. The outer surface of the first cutting edge is tapered, the angle of the taper is 5-18 degrees, and the right side surface of the cross section of the first cutting edge is inclined, and the included angle between the right side surface and the vertical surface is -5-5 degrees.

5. The hexagonal shank reamer as set forth in claim 4, wherein The outer surface of the second cutting edge is helically arranged, the helix angle is 6-20 degrees, the right side surface of the cross section of the second cutting edge is inclined, and the included angle between the right side surface and the vertical surface is -5-10 degrees.

6. The hexagonal shank reamer as set forth in claim 4, wherein The outer surface of the second cutting edge is provided with a blade belt, and the width of the blade belt is 0.1-0.4 cm.

7. A hexagonal shank reamer as defined in claim 6 wherein, The six square handle is in the shape of a regular hexagon, and a groove is arranged on the six square handle.

8. The hexagonal shank reamer as set forth in claim 1, wherein The cooling system includes: oil storage cavity, oil conveying pipe and oil discharge pipe; 9. The hexagonal shank reamer as set forth in claim 1, wherein The oil storage cavity is arranged in the six square handle, one end of the oil storage cavity is communicated with the oil injection pipe, the other end is communicated with the oil conveying pipe, the oil conveying pipe is arranged in the tool head, a plurality of oil discharge pipes are communicated with the oil conveying pipe, and the oil discharge pipes are communicated with the cooling holes in the groove wall of the chip groove. The oil discharge pipe includes: flow guide part, oil outlet part and one-way valve; 10. The hexagonal shank reamer according to claim 9, wherein One end of the flow guide part is communicated with the oil conveying pipe, the other end is communicated with the oil outlet part, one end of the oil outlet part is communicated with the cooling hole, the flow guide part and the oil outlet part are both arc-shaped and have different arc directions, and the one-way valve is arranged at the communication position of the flow guide part and the oil outlet part, so that the lubricating oil in the flow guide part enters the oil outlet part. ​

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