Micro-small-diameter tungsten steel spiral reamer

Abstract

The utility model relates to a micro-small-diameter tungsten steel spiral reamer which comprises a reamer body. The front end of the reamer body is fixedly connected with a connecting part. The front end of the connecting part is fixedly connected with a bearing part. The front end of the bearing part is provided with a second connecting part. The front end of the second connecting part is provided with a second bearing part. The tungsten steel drill bit comprises a spiral cutter part, a spiral cutter head is arranged at the front end of the spiral cutter part, a protrusion is arranged in the center of the front end of the spiral cutter head, abutting parts are evenly arranged on the two sides of the protrusion, the spiral cutter part is connected to the rear sides of the abutting parts, and flow guide grooves are formed in the left side and the right side of the connecting position of the abutting parts and the spiral cutter part. The abrasion resistance of the front end of the micro-diameter cutter is improved, the service life of the whole micro-diameter cutter is prolonged, then the diameter of the whole cutter is reasonably and gradually reduced by arranging the connecting part, the bearing part, the second connecting part and the second bearing part, and the micro-diameter reamer is large in rigidity strength and not prone to being broken.

Description

Technical Field

[0001] This utility model relates to the field of reamer technology, and in particular to a micro-diameter tungsten steel spiral reamer. Background Technology

[0002] In the field of machining, drill bits or reamers are already very common. When machining, if ordinary drill bits are used directly, they have poor wear resistance and short service life. A lot of chips are generated during the drilling process. If the chips are not discharged or are not discharged smoothly, it will easily lead to low drilling accuracy. In order to machine small diameter holes, the tool needs to be not easy to break during the machining process, which makes the machining difficult.

[0003] Patent No. CN201720765246.7 discloses a drill reamer, which consists of a drill section, a reamer section, and a shank arranged from left to right. The drill section and the reamer section are provided with chip removal grooves. One end and the outer periphery of the drill section are respectively provided with an end cutting edge and a peripheral cutting edge. The side of the chip removal groove facing the rotation direction of the tool forms a machining surface. The side of the machining surface near the end cutting edge is provided with a chip breaking groove. The reamer section has a conical structure with a smaller left side and a larger right side. The outer periphery of the reamer section is provided with a reaming edge. The diameter of the right side of the reamer section is the same as the diameter of the shank. The helix angle of the chip removal groove in the drill section is greater than that in the reamer section. The chip breaking groove can effectively break aluminum chips and improve processing efficiency. The reamer can clean burrs inside the hole, making the machined hole of aluminum material smoother and the processing efficiency higher. When processing aluminum material, drilling and reaming can be completed in one process. However, this tool has the following problems: First, small diameter tools are easy to break. Second, the tool has a short service life, is difficult to remove chips, and has poor wear resistance. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by setting an abutment part to increase the wear resistance of the tip of the micro-diameter tool and extend the service life of the entire micro-diameter tool. Then, by setting a connecting part, a receiving part, a second connecting part, and a second receiving part, the diameter of the entire tool is reasonably and gradually reduced, thus solving the technical problems of easy breakage and poor rigidity of micro-diameter tools in existing technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A micro-diameter tungsten carbide spiral reamer includes a tool body, a connecting part fixedly connected to the front end of the tool body, a receiving part fixedly connected to the front end of the connecting part, a second connecting part provided at the front end of the receiving part, a second receiving part provided at the front end of the second connecting part, and a tungsten carbide drill bit connected to the front end of the second receiving part.

[0007] A tungsten carbide drill bit, comprising a spiral cutter section, a spiral head at the front end of the spiral cutter section, a protrusion at the center of the front end of the spiral head, and abutment portions evenly distributed on both sides of the protrusion. The rear sides of the abutment portions are connected to the spiral cutter section, and guide grooves are provided on both the left and right sides of the connection position between the abutment portions and the spiral cutter section.

[0008] As a preferred embodiment, the diameter of the connecting part is the same as the diameter of the tool body, and the surface of the connecting part is uniformly provided with groove arcs. The rear end of the tool body is provided with a limiting installation groove, which is a rectangular structure and has an arc-shaped groove at the front end.

[0009] As a preferred embodiment, the diameter of the front end of the receiving part is smaller than that of the rear end, the diameter of the second connecting part is the same as that of the front receiving part, and the surface of the second connecting part is uniformly provided with a second groove arc.

[0010] As a preferred embodiment, the diameter of the rear end of the second receiving part is larger than that of the front end, and the diameter of the tungsten carbide drill bit is the same as the diameter of the front end of the second receiving part.

[0011] As another preferred embodiment, the tungsten carbide drill bit is a two-bladed spiral drill bit, wherein the outermost edge of the spiral cutter is a plane, and a spiral guide groove is provided near the outermost edge of the spiral cutter.

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

[0013] (1) In this utility model, by setting a protrusion, the protrusion is used to abut against the center point of the hole to be processed, ensuring the accurate position of the hole. Then, the abutment part is used as the first contact surface for opening the hole, thereby improving the wear resistance of the entire tool.

[0014] (2) In this utility model, a spiral cutter is provided, and a flat surface is provided on the outermost side of the spiral cutter to prevent manual scratching. Then, a spiral guide groove is provided on the spiral cutter to ensure that chip removal is more convenient during the drilling process.

[0015] (3) In this utility model, by setting a connecting part, a receiving part, a second connecting part and a second receiving part, the diameter becomes smaller and smaller, ensuring that the rigidity of the micro-diameter tool is large and not easy to break.

[0016] In summary, this tool has the advantages of high rigidity, resistance to breakage, precise machining of small diameters, high wear resistance, and convenient chip removal, making it particularly suitable for the field of reamer 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 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the spiral cutter head in this utility model.

[0020] Figure 3 This is a schematic diagram of the protrusion structure in this utility model. Detailed Implementation

[0021] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0022] Example 1

[0023] like Figures 1 to 3 As shown, this utility model provides a micro-diameter tungsten carbide spiral reamer, including a tool body 1, a connecting part 2 fixedly connected to the front end of the tool body 1, a receiving part 3 fixedly connected to the front end of the connecting part 2, a second connecting part 4 provided at the front end of the receiving part 3, a second receiving part 5 provided at the front end of the second connecting part 4, and a tungsten carbide drill bit 6 connected to the front end of the second receiving part 5.

[0024] A tungsten carbide drill bit 6 includes a spiral cutter section 61, a spiral cutter head 62 at the front end of the spiral cutter section 61, a protrusion 63 at the center of the front end of the spiral cutter head 62, and abutment portions 64 evenly distributed on both sides of the protrusion 63. The rear sides of the abutment portions 64 are connected to the spiral cutter section 61, and guide grooves 65 are provided on both the left and right sides of the connection position between the abutment portions 64 and the spiral cutter section 61.

[0025] Furthermore, the diameter of the connecting part 2 is the same as the diameter of the tool body 1, and the surface of the connecting part is uniformly provided with groove arc 21. The rear end of the tool body 1 is provided with a limiting installation groove 11. The limiting installation groove 11 has a rectangular structure, and the front end of the limiting installation groove 11 is provided with an arc groove. The arc groove 21 is designed to facilitate workers to pick up and hold the tool, facilitate workers to install the tool, and save material costs. The limiting installation groove 11 facilitates the installation and fixation of the tool.

[0026] Furthermore, the diameter of the front end of the receiving part 3 is smaller than that of the rear end, and the diameter of the second connecting part 4 is the same as that of the front end of the receiving part 3. The surface of the second connecting part 4 is uniformly provided with a second groove arc 31, with the diameter gradually decreasing to ensure the rigidity of the micro-diameter tool, making it less prone to breakage and with a long service life. The second groove arc 31 and the groove arc 21 have the same function, saving material costs while making it easy to hold, and ensuring high rigidity at the connection position, thereby increasing the overall rigidity.

[0027] Furthermore, the rear diameter of the second receiving part 5 is larger than that of the front end, and the diameter of the tungsten carbide drill bit 6 is the same as that of the front end of the second receiving part 5. The overall smoothness of the cutting tool is better, and the design is more reasonable.

[0028] Furthermore, the tungsten carbide drill bit 6 is a two-bladed spiral drill bit. The outermost edge of the spiral cutter 61 is flat, and a spiral guide groove 66 is provided near the outermost edge of the spiral cutter 61. The flat outer edge can effectively prevent accidental injury to workers, making the installation and holding process safer for workers. The spiral guide groove 66 is designed to facilitate the flow and removal of chips, reducing the impact of drilling debris on drilling accuracy.

[0029] Working process: First, the worker holds the tool body 1 at the position of the connecting part 2 or the second connecting part 4 to limit the installation groove 11 at the rear end of the tool body 1 and connect it to the drilling tool. Then, the protrusion 63 is aligned with the center position of the hole to be drilled, and the drilling tool is turned on. The abutment part 64 first contacts the drilling position to improve the wear resistance and service life of the entire tool. Then, the guide groove 65 is set so that when the chip removal begins, the waste chips can be guided by the guide groove 65 to improve the drilling accuracy.

[0030] It is worth noting that the outer side of the spiral cutter is flat, which can prevent scratches and ensure safety. In addition, a spiral guide groove 66 is set on the outer side to ensure a large chip removal capacity and more orderly and convenient chip removal.

[0031] 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.

[0032] 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.

[0033] 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 micro-diameter tungsten carbide spiral reamer, characterized in that: include The tool body (1) has a connecting part (2) fixedly connected to the front end of the tool body (1), a receiving part (3) fixedly connected to the front end of the connecting part (2), a second connecting part (4) provided at the front end of the receiving part (3), a second receiving part (5) provided at the front end of the second connecting part (4), and a tungsten carbide drill bit (6) connected to the front end of the second receiving part (5). A tungsten carbide drill bit (6) includes a spiral cutter part (61), a spiral cutter head (62) is provided at the front end of the spiral cutter part (61), a protrusion (63) is provided at the center of the front end of the spiral cutter head (62), and abutment parts (64) are evenly provided on both sides of the protrusion (63). The rear side of the abutment parts (64) is connected to the spiral cutter part (61), and guide grooves (65) are provided on both the left and right sides of the connection position between the abutment parts (64) and the spiral cutter part (61).

2. The micro-diameter tungsten carbide spiral reamer according to claim 1, characterized in that, The diameter of the connecting part (2) is the same as the diameter of the tool body (1), and the surface of the connecting part is uniformly provided with groove arc (21). The tool body (1) is provided with a limiting installation groove (11) at the rear end. The limiting installation groove (11) is a rectangular structure, and the front end of the limiting installation groove (11) is provided with an arc groove.

3. The micro-diameter tungsten carbide spiral reamer according to claim 1, characterized in that, The front end diameter of the receiving part (3) is smaller than that of the rear end, the diameter of the second connecting part (4) is the same as that of the front end receiving part (3), and the surface of the second connecting part (4) is uniformly provided with a second groove arc (31).

4. The micro-diameter tungsten carbide spiral reamer according to claim 1, characterized in that, The diameter of the rear end of the second receiving part (5) is larger than that of the front end, and the diameter of the tungsten carbide drill bit (6) is the same as that of the front end of the second receiving part (5).

5. A micro-diameter tungsten carbide spiral reamer according to claim 1, characterized in that, The tungsten carbide drill bit (6) is a two-bladed spiral drill bit. The outermost edge of the spiral cutter (61) is a plane, and a spiral guide groove (66) is provided near the outermost edge of the spiral cutter (61).

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