Composite formed milling cutter
By designing a composite forming milling cutter, the problem of low machining efficiency of traditional cutting tools is solved, enabling efficient machining of multiple contours or multiple workpieces, reducing production costs, and improving machining efficiency and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HPTEC CHINA LTD
- Filing Date
- 2025-04-09
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional cutting tools are inefficient when machining aluminum alloy mobile phone frames, resulting in high production costs. Frequent repetitive machining operations become a production bottleneck, limiting the company's capacity expansion.
Design a composite forming milling cutter with multiple contour milling sections and one planar milling section, which can process multiple contours or multiple workpiece contours at one time. Combined with a spiral groove and a V-shaped chip removal groove, it improves machining efficiency and stability.
It reduces processing steps and time, lowers production costs, improves processing efficiency, reduces tool change frequency, and enhances the structural strength and chip removal effect of the tools.
Smart Images
Figure CN224143587U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cutting tool technology, and in particular to compound forming milling cutters. Background Technology
[0002] Currently, the mobile phone manufacturing industry is booming, and the demand for aluminum alloy mobile phone frames continues to grow. In the processing of these frames, tool performance is crucial to production efficiency and cost control. Traditional tools are mostly simple in structure, milling only one piece of material at a time. Taking the mass production of aluminum alloy mobile phone frames as an example, frequent repetitive processing operations are required, consuming a large amount of labor and equipment resources, resulting in high production costs. This inefficient processing method has become a production bottleneck in the face of rapidly growing market demand, severely restricting enterprises' capacity expansion and economic benefits. Therefore, there is an urgent need for a form milling cutter to significantly improve processing efficiency, reduce production costs, and meet the market's production demand for aluminum alloy mobile phone frames. Utility Model Content
[0003] Therefore, it is necessary to provide a composite forming milling cutter to address the problem of low machining efficiency of current cutting tools.
[0004] A composite forming milling cutter, comprising:
[0005] The handle; and
[0006] The blade tip is attached to one end of the handle;
[0007] The cutter head has at least two contour milling sections, all of which are arranged sequentially along the axial direction of the cutter shank. Each contour milling section is used to mill the contour of a workpiece. The end of the cutter head is also provided with a planar milling section.
[0008] In one embodiment, the contour shapes and / or dimensions of the various contour milling portions are different; or
[0009] The contour shape and size of each of the contour milling parts are the same.
[0010] In one embodiment, the contour milling section includes three sections, which are arranged sequentially along the axial direction of the tool holder.
[0011] In one embodiment, the outer diameter of the entire contour milling portion gradually decreases along the direction close to the planar milling portion.
[0012] In one embodiment, the maximum diameter of the blade head is 16 mm, and the diameter of the handle is 12 mm.
[0013] In one embodiment, the cutter head has a groove that runs sequentially through the entire contour milling portion along the axial direction of the cutter shank.
[0014] In one embodiment, the cutting grooves are spiral-shaped along the axial direction of the tool holder, and the number of cutting grooves is three.
[0015] In one embodiment, the end of the cutter head is further provided with a chip removal groove that penetrates the planar milling section, and the chip removal groove is V-shaped.
[0016] In one embodiment, the rake angle of the chip removal groove is 23 to 25 degrees.
[0017] In one embodiment, the core thickness of the composite forming milling cutter is d, and the outer diameter of the planar milling portion is D, wherein 40%D≤d≤45%D.
[0018] The aforementioned composite forming milling cutter, having at least two contour milling sections, can mill at least two contours of the workpiece at once, or at least two different contours of the workpiece. Therefore, it greatly reduces the number of processing steps and processing time, lowers production costs, and the planar milling section at the end of the cutter head can also process the plane of the workpiece, thus achieving multiple uses with one cutter, reducing the frequency of tool changes and improving processing efficiency. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of a composite forming milling cutter in some embodiments of this application.
[0020] Figure 2 for Figure 1 The side view of the compound forming milling cutter shown.
[0021] Figure 3 for Figure 1 The diagram shows a composite forming milling cutter simultaneously machining the contours of three workpieces.
[0022] Figure 4 for Figure 1 The diagram shows a composite forming milling cutter machining the plane of the workpiece.
[0023] Figure 5 for Figure 1 The bottom view of the composite forming milling cutter shown.
[0024] Explanation of reference numerals in the attached figures:
[0025] Composite forming milling cutter 100, tool holder 10, cutter head 20, cutting edge 21, contour milling part 22, plane milling part 23, tool groove 24, chip removal groove 25, workpiece to be processed 200. Detailed Implementation
[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element 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 application.
[0028] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0030] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0031] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0032] Figure 1 This is a schematic diagram of the structure of the composite forming milling cutter in some embodiments of this application; Figure 2 for Figure 1 The side view of the compound forming milling cutter shown; Figure 3 for Figure 1 The diagram shows a composite forming milling cutter simultaneously machining the contours of three workpieces. Figure 4 for Figure 1 The diagram shows a composite forming milling cutter machining the plane of a workpiece. (Combined with...) Figures 1-4 This application provides a composite forming milling cutter 100, which includes a shank 10 and a cutter head 20. The shank 10 is typically compatible with CNC machine tools or other precision machining equipment, and the cutter head 20 has a cutting edge 21, enabling the composite forming milling cutter 100 to mill a workpiece 200. In this embodiment, the workpiece 200 can be a semi-finished mobile phone frame, specifically an aluminum alloy mobile phone frame semi-finished product.
[0033] Specifically, the cutter head 20 is connected to one end of the tool holder 10. The cutter head 20 has at least two contour milling portions 22, all of which are arranged sequentially along the axial direction of the tool holder 10. Each contour milling portion 22 mills the contour of a workpiece 200. The end of the cutter head 20 is also provided with a planar milling portion 23.
[0034] Specifically, the axial direction of the tool holder 10 is as follows: Figure 2 The horizontal directions shown are parallel.
[0035] The contour milling section 22 refers to the section capable of machining at least a portion of the outer or inner contour of the workpiece 200 when the compound forming milling cutter 100 is working and rotating, to form a corresponding contour shape. Specifically, the contour milling section 22 includes multiple side cutting edges. The planar milling section 23 refers to the section capable of machining the plane of the workpiece 200 to form a corresponding planar structure. Specifically, the planar milling section 23 includes multiple end cutting edges. It should be understood that both the side cutting edges and the end cutting edges are the aforementioned cutting edges 21.
[0036] Since the composite forming milling cutter 100 of this application has at least two contour milling portions 22, it can mill at least two contours of the workpiece 200 at one time, or mill at least two different contours of the workpiece 200. Therefore, it greatly reduces the number of processing steps and processing time, and reduces production costs. In addition, the plane milling portion 23 at the end of the cutter head 20 can also process the plane of the workpiece 200, so it can also achieve multiple uses of one cutter, reduce the frequency of tool changes, and improve processing efficiency.
[0037] Please continue reading. Figure 1 and Figure 2 Specifically, in the embodiments of this application, the contour milling part 22 includes three parts, and the three contour milling parts 22 are arranged sequentially along the axial direction of the tool holder 10.
[0038] By setting up three contour milling sections 22, it is possible to mill three contours of the workpiece 200 at the same time, or to mill two or three different contours of the workpiece 200, which further reduces the number of processing steps and processing time, and lowers production costs.
[0039] In other embodiments, the contour milling section 22 may also include two or four, and there is no specific limitation. However, compared with other numbers of contour milling sections 22, the three contour milling sections 22 in this embodiment of the application not only meet the requirements of reducing processing steps and processing time, but also ensure the structural strength of the composite forming milling cutter 100 and improve the stability of processing.
[0040] In some embodiments, the contour shape and / or size of each contour milling portion 22 are different.
[0041] The different contour shapes and / or dimensions of each contour milling part 22 means that the contour shapes of each contour milling part 22 are different, or the contour dimensions of each contour milling part 22 are different, or the contour shapes of some parts of each contour milling part 22 are different, while the contour dimensions of other parts are different.
[0042] Furthermore, the contour dimensions of each contour milling part 22 referred to here refer to the dimensional parameters possessed by the contour. For example, if the contour of the contour milling part 22 is an arc, then the contour dimensions include the arc radius and arc length, etc. It can be understood that the contour dimensions of the contour milling part 22, after being mapped onto the workpiece 200, should be equivalent to the contour dimensions formed on the workpiece 200.
[0043] By setting different contour shapes and / or sizes for each contour milling section 22, at least two different contours of the workpiece 200 can be processed at once, or at least two different contours of different workpieces 200 can be processed, thereby improving processing efficiency.
[0044] In some embodiments, the contour shape and size of each contour milling portion 22 are the same.
[0045] By setting the contour shape and size of each contour milling unit 22 to be identical, three identical contours can be processed simultaneously. Specifically, the same contour of the same batch of workpieces 200 can be processed, thus improving the processing efficiency of the same batch of workpieces 200.
[0046] In some embodiments, the outer diameter of the entire contour milled portion 22 gradually decreases along the direction close to the planar milled portion 23.
[0047] Thus, the outer diameter of the contour milling portion 22 closer to the tool holder 10 is larger, while the outer diameter of the contour milling portion 22 farther from the tool holder 10 is smaller, thereby enhancing the reliability of the connection between the tool head 20 and the tool holder 10 and improving the structural strength of the tool head 20.
[0048] Specifically, when the contour milling part 22 includes three parts, the outer diameter of the first contour milling part 22 directly connected to the tool holder 10 is the largest, the outer diameter of the third contour milling part 22 farthest from the tool holder 10 is the smallest, and the outer diameter of the second contour milling part 22 located between the first contour milling part 22 and the third contour milling part 22 is not greater than the first contour milling part 22 and not less than the third contour milling part 22.
[0049] Furthermore, the maximum diameter of the blade 20 is 16 mm, and the diameter of the handle 10 is 12 mm.
[0050] When the maximum diameter of the cutter head 20 is 16 mm and the diameter of the shank 10 is 12 mm, on the one hand, the maximum diameter of the cutter head 20, which is the position of the contour milling portion 22 closest to the shank 10, is larger than the diameter of the shank 10. Therefore, the reliability of the connection between the shank 10 and the cutter head 20 can be enhanced, making the connection of the composite forming milling cutter 100 more reliable. On the other hand, since the maximum diameter of the cutter head 20 is slightly larger than the diameter of the shank 10, as the outer diameter of all contour milling portions 22 gradually decreases in the direction close to the planar milling portion 23, the outer diameter of the contour milling portion 22 closest to the planar milling portion 23 can be prevented from being too small. This ensures the structural strength of each contour milling portion 22 and improves the overall structural strength of the cutter head 20, thereby improving the reliability of milling.
[0051] Please continue reading. Figure 1 and Figure 2 In some embodiments, the cutter head 20 has a groove 24 that runs through the entire contour milling portion 22 along the axial direction of the cutter shank 10.
[0052] The groove 24 is a groove structure formed between two adjacent cutting edges 21. The cutting edge 21 is the side edge that forms the contour milling portion 22. The groove 24 is a groove structure that removes milling chips generated when the workpiece 200 is milled using the compound forming milling cutter 100.
[0053] By providing the cutter head 20 with a groove 24 that runs through the entire contour milling section 22 along the axial direction of the cutter shank 10, the overall structure of the cutter head 20 can be simplified and the overall chip removal efficiency can be improved.
[0054] Specifically, in the embodiments of this application, the cutting groove 24 is spiral-shaped along the axial direction of the tool holder 10, and the number of cutting grooves 24 is 3.
[0055] The spiral groove design allows the cutting edge 21 to gradually cut into the tool, enhancing cutting smoothness, improving chip removal, reducing impact vibration, and optimizing the continuity of the cutting process. This results in a high surface finish on the workpiece 200 and a long overall service life for the composite forming milling cutter 100. Furthermore, the presence of three grooves 24 strikes a balance between chip removal and tool rigidity, providing a more stable and smooth cutting experience, thereby improving cutting efficiency.
[0056] It is understood that when there are 3 tool grooves 24 that pass through the entire contour milling section 22 in sequence along the axial direction of the tool holder 10, the side cutting edge of the contour milling section 22 includes 3.
[0057] In some embodiments, the end of the cutter head 20 is further provided with a chip removal groove 25 that penetrates the planar milling portion 23, and the chip removal groove 25 is V-shaped.
[0058] First, the V-shaped chip groove 25 design allows chips to be smoothly discharged along the V-groove, reducing chip accumulation and blockage inside the tool and thus maintaining a smooth cutting process. Second, during cutting, the V-shaped chip groove 25 better guides chip flow, reducing fluctuations and concentrations in cutting forces, thereby reducing tool vibration and extending tool life. Third, the V-shaped chip groove 25 design allows chips to carry away more heat during discharge, reducing the tool's high-temperature operating conditions and thus lowering the risk of thermal wear and thermal cracking.
[0059] Furthermore, the rake angle of the chip groove 25 is 23 to 25 degrees. This makes the rake angle sharp, and the corresponding cutting edge 21, that is, the end edge forming the planar milling part 23, can cut more effectively.
[0060] See Figure 5 In some embodiments, the core thickness of the composite forming milling cutter 100 is d, and the outer diameter of the planar milling portion 23 is D, wherein 40%D≤d≤45%D.
[0061] Core thickness refers to the thickness of the solid portion near the central axis of the tool. This application designs 40%D≤d≤45%D, which increases the chip groove space without significantly affecting tool rigidity, thus making chip removal smoother.
[0062] In summary, the composite forming milling cutter 100 of this application embodiment, having at least two contour milling portions 22, can mill at least two contours of the workpiece 200 at one time, or mill at least two different contours of the workpiece 200. Therefore, it greatly reduces the number of processing steps and processing time, and lowers production costs. Furthermore, the planar milling portion 23 at the end of the cutter head 20 can also process the plane of the workpiece 200, thus achieving multiple uses with one cutter, reducing the frequency of tool changes, and improving processing efficiency.
[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0064] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A composite forming milling cutter, characterized in that, include: Handle; as well as The cutting head is connected to one end of the handle; The cutter head has at least two contour milling sections, all of which are arranged sequentially along the axial direction of the cutter shank. Each contour milling section is used to mill the contour of a workpiece. The end of the cutter head is also provided with a planar milling section.
2. The composite form milling cutter according to claim 1, wherein The contour shapes and / or dimensions of each of the described contour milling parts are different; or The contour shape and size of each of the contour milling parts are the same.
3. The composite form milling cutter according to claim 1 or 2, characterized in that, The contour milling section includes three parts, which are arranged sequentially along the axial direction of the tool holder.
4. The composite form milling cutter according to claim 1 or 2, characterized in that, Along the direction close to the planar milling portion, the outer diameter of all the contour milling portions gradually decreases.
5. The composite form milling cutter according to claim 4, wherein The maximum diameter of the blade head is 16 mm, and the diameter of the handle is 12 mm.
6. The composite form milling cutter according to claim 1 or 2, wherein The cutting head has cutting grooves that pass sequentially through all the contour milling portions along the axial direction of the cutting shank.
7. The composite form milling cutter according to claim 6, wherein The cutting grooves are spiral-shaped along the axial direction of the tool holder, and there are three cutting grooves in total.
8. The composite form milling cutter according to claim 1 or 2, wherein The end of the cutter head is also provided with a chip removal groove that penetrates the planar milling part, and the chip removal groove is V-shaped.
9. The composite form milling cutter according to claim 8, wherein, The front angle of the chip removal groove is 23 degrees to 25 degrees.
10. The composite form milling cutter according to claim 1 or 2, wherein The core thickness of the composite forming milling cutter is d, and the outer diameter of the planar milling part is D, wherein 40%D≤d≤45%D.