Integral hard alloy four-blade aluminum drilling reamer
By designing a solid carbide four-flute aluminum drill and reamer, the problems of precision and lifespan in the machining of holes in high-precision aluminum alloy products were solved, and efficient and low-cost aluminum alloy hole machining was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-06
AI Technical Summary
In the automotive industry, the machining of holes in high-precision aluminum alloy products faces challenges in meeting high standards in terms of accuracy, surface roughness, and tool life, which impacts production efficiency and costs.
A one-piece cemented carbide four-flute aluminum drill and reamer is designed. It adopts a one-piece molded drill and reamer body with specific cutting edge and angle design. It uses tungsten steel and tungsten carbide as a binder to realize a composite tool that integrates drilling and reaming, ensuring machining accuracy and efficiency.
It enables efficient precision machining of holes in aluminum alloy products, avoids burr residue, improves appearance quality and tool life, and reduces production costs.
Smart Images
Figure CN223970908U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts processing and manufacturing, specifically to a solid carbide four-flute aluminum drill and reamer. Background Technology
[0002] In the automotive industry, machining holes in high-precision aluminum alloy products is a highly challenging and critical process. Automotive products, due to their complex applications and stringent performance requirements, demand extremely high precision, surface roughness, and tool life.
[0003] In hole machining, precision is the primary consideration. Even minute deviations can affect the assembly accuracy of automotive parts, thereby impacting the overall vehicle performance and safety. Surface roughness is equally crucial; a smooth surface not only improves the appearance of parts but also reduces frictional wear and extends service life. Tool life directly affects production efficiency and cost. Frequent tool changes not only slow down production progress but also increase production costs.
[0004] Therefore, in the machining of holes in high-precision aluminum alloy products in the automotive industry, advanced machining technologies and high-precision cutting tools are required, and various parameters must be strictly controlled to ensure that the high standards required by the automotive industry are met. Utility Model Content
[0005] In order to overcome the above-mentioned defects of the prior art, the purpose of this utility model is to provide a solid carbide four-flute aluminum drill reamer.
[0006] We developed a composite tool for drilling and reaming aluminum alloy products, which can precisely machine holes in one step, greatly improving processing efficiency. The unique tool angle design ensures that there are no burrs left after processing, guaranteeing the appearance quality of the product.
[0007] To achieve the objective of this utility model, the technical solution adopted is as follows:
[0008] A solid carbide four-flute aluminum drill reamer, comprising:
[0009] A one-piece drill and reamer body, wherein a first drill head, a first reamer part, a second drill head, and a second reamer part are sequentially arranged at the front part of the drill and reamer body;
[0010] The outer periphery of the first drill bit is the first cutting edge;
[0011] The outer periphery of the first reamer portion is the second cutting edge;
[0012] The outer periphery of the second drill bit is the third cutting edge;
[0013] The outer periphery of the second reamer part is the fourth cutting edge;
[0014] The top of the first drill bit is provided with a drill tip, and the angle of the drill tip is 118-119°;
[0015] The front end of the second drill bit is provided with an inclined portion, and the inclined portion has an inclination angle of 90°;
[0016] The diameters of the first drill head, the first reamer section, the second drill head, and the second reamer section increase progressively.
[0017] In a preferred embodiment of this utility model, the diameter of the first drill bit is 9.8±0.01mm.
[0018] In a preferred embodiment of this utility model, the diameter of the first reamer portion is 10±0.012mm.
[0019] In a preferred embodiment of this utility model, the diameter of the second reamer is 16±0.012mm.
[0020] In a preferred embodiment of this utility model, the diameter of the second drill bit is 15.8±0.01mm.
[0021] In a preferred embodiment of this utility model, the integrally formed drill and reamer body is integrally machined from tungsten steel.
[0022] The beneficial effects of this utility model are as follows:
[0023] This utility model discloses a four-flute carbide drill and reamer for aluminum, which is a composite tool developed for aluminum alloy products. It integrates drilling and reaming, and can precisely shape the hole in one step, which greatly improves the processing efficiency. The unique tool angle design can ensure that there are no burr residues after the product is processed, and the appearance quality is guaranteed. Attached Figure Description
[0024] The present invention will be further described below with reference to the accompanying drawings:
[0025] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, in the following descriptions, well-known structures and technologies have been omitted to avoid unnecessary confusion regarding the concept of this utility model.
[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] like Figure 1 The drill and reamer for aluminum with a solid carbide four-flute blade shown includes a one-piece drill and reamer body 100. A first drill head 110, a first reamer part 120, a second drill head 130 and a second reamer part 140 are sequentially arranged at the front of the drill and reamer body 100. A shank part 150 is arranged after the second reamer part 140. The diameter of the connecting section 151 of the shank part is 15mm.
[0029] The outer periphery of the first drill head 110 is the first cutting edge 110a, the outer periphery of the first reamer part 120 is the second cutting edge 120a, the outer periphery of the second drill head 130 is the third cutting edge 130a, and the outer periphery of the second reamer part 140 is the fourth cutting edge 140a.
[0030] The four-blade design allows this invention to perform integrated drilling and reaming on aluminum alloy products, saving processing costs and improving processing speed.
[0031] The top of the first drill head 110 is provided with a drill tip 111, and the angle of the drill tip 111 is 118-119°, which is 118.76° in this embodiment.
[0032] At the start of drilling, the drill tip 111 first contacts the workpiece surface. Due to the improved shape, it can be accurately positioned on the workpiece, guiding the drill reamer to begin machining along the predetermined center position.
[0033] This helps ensure that the hole has the correct center position in subsequent reaming, which is crucial for ensuring the fit accuracy of the hole with other related components (such as the concentricity of the shaft and the hole).
[0034] The front end of the second drill head 130 is provided with an inclined part 131, and the inclined part 131 has an inclination angle of 90°.
[0035] The diameters of the first drill head 110, the first reamer section 120, the second drill head 130, and the second reamer section 140 increase progressively, which allows for better force application.
[0036] The diameter of the first drill bit 110 is 9.8±0.01mm.
[0037] The diameter of the first reamer section 120 is 10±0.012mm.
[0038] The diameter of the second reamer section 140 is 16±0.012mm.
[0039] The diameter of the second drill bit 130 is 15.8 ± 0.01 mm.
[0040] The integrally molded drill and reamer body of this invention is machined from tungsten steel. Its main component is tungsten carbide (WC), a high-hardness alloy material made with Co as a binder. Tungsten carbide (WC) is an extremely hard material, second only to diamond, and can effectively withstand high-intensity cutting and drilling operations, extending the tool's service life.
[0041] Due to the high wear resistance of tungsten carbide, cutting tools can maintain a sharp cutting edge during use, reducing wear and improving machining accuracy and efficiency.
[0042] By adopting one-piece molding technology, the problems of weak connection or stress concentration that may occur in the segmented manufacturing of traditional cutting tools are avoided, further improving the overall strength and reliability of the cutting tools.
[0043] The above shows and describes the basic principles, main features, and advantages of this utility model.
[0044] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of this utility model as defined by the appended claims and their equivalents.
Claims
1. A solid carbide four-flute aluminum drill reamer characterized in that, The application relates to a one-piece drill-reamer body, which is provided with a first drill head, a first reamer, a second drill head and a second reamer in sequence from front to back. The outer periphery of the first drill head is a first cutting edge. The outer periphery of the first reamer is a second cutting edge. The outer periphery of the second drill head is a third cutting edge. The outer periphery of the second reamer is a fourth cutting edge. The top of the first drill head is provided with a drill tip, and the angle of the drill tip is 118-119 DEG. The front end of the second drill head is provided with an inclined part, and the inclination angle of the inclined part is 90 DEG. The diameters of the first drill head, the first reamer, the second drill head and the second reamer increase in sequence. The diameter of the first drill head is 9.8+ / -0.01 mm.
2. A solid carbide four-flute drill reamer for aluminum as set forth in claim 1, characterized in that, The diameter of the first reamer is 10+ / -0.012 mm.
3. A solid carbide four-lip drill reamer for aluminum as set forth in claim 1, characterized in that, The diameter of the second reamer is 16+ / -0.012 mm.
4. A solid carbide four-lip drill reamer for aluminum as set forth in claim 1, characterized in that, The diameter of the second drill head is 15.8+ / -0.01 mm.
5. A solid carbide four-lip drill reamer for aluminum as defined in claim 1 wherein, The one-piece drill-reamer body is integrally processed by using tungsten steel.
6. A solid carbide four-lip drill reamer for aluminum as defined in claim 1 wherein,