Cutting tool
The integrated cutting tool addresses the issue of positional errors in multi-contour machining by integrating cutting edges for profile, corner, and thickness reduction, ensuring stable and precise machining results without tool changes.
Patent Information
- Application Number
- CN202422141207.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-31
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-31
AI Technical Summary
When machining workpieces with multiple outer contours, position errors due to tool switching in the prior art affect the dimensional stability of the outer contour of the workpiece.
Design a cutting tool that integrates multiple cutting edges, including edges for machining outer contours, chamfers and reduced thickness, integrated on a tool for machining to avoid tool switching.
Improve machining efficiency, ensure the stability of the outer contour dimensions of the workpiece, avoid position deviations caused by tool switching, and enhance the rigidity and durability of the cutting tool.
Smart Images
Figure CN223098094U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical processing, in particular to a cutting tool. Background Art
[0002] At present, for some products with at least two outer contours, two or more different contour tools are required to process the contours of the workpiece. However, when processing different contours, due to the position error of the contour processing of each tool, the tool position is prone to deviation when the tool is switched, resulting in the relative position between the contours on the workpiece cannot be guaranteed, which in turn affects the outer contour dimensional stability of the workpiece after processing. Utility Model Content
[0003] In view of this, it is necessary to provide a cutting tool to improve the dimensional stability of the outer contour of the workpiece after processing without switching the tool.
[0004] The utility model provides a cutting tool, which comprises a shank and a cutting portion arranged at one end of the shank, a portion of the outer peripheral wall of the cutting portion is concave to form a first cutting edge, the first cutting edge is used to process the outer contour of a workpiece, and an end of the cutting portion away from the shank is provided with a second cutting edge and a third cutting edge arranged at intervals, the second cutting edge and the third cutting edge are both located on the side of the first cutting edge away from the shank, the second cutting edge is used to process the chamfer of the workpiece, and the third cutting edge is used to cut the surface of the workpiece to reduce the thickness of the workpiece.
[0005] In some possible embodiments, the first cutting edge includes two oppositely disposed first cutting surfaces and a second cutting surface, the second cutting surface is disposed between the two first cutting surfaces, and the first cutting edge and the second cutting edge are connected via an arc surface transition.
[0006] In some possible embodiments, the projection shape of the second cutting edge on a plane parallel to the axis of the cutting tool is an arc.
[0007] In some possible embodiments, an end of the third cutting edge away from the tool handle is flush with an end of the second cutting edge away from the tool handle.
[0008] In some possible embodiments, the second cutting edge and the third cutting edge are spaced apart from each other in the axial direction of the cutting tool.
[0009] In some possible embodiments, a fourth cutting edge is provided at one end of the cutting portion close to the tool handle. The fourth cutting edge is located on a side of the first cutting edge away from the second cutting edge and is used for cutting the surface of a workpiece to reduce the thickness of the workpiece.
[0010] In some possible embodiments, the minimum distance from the second cutting edge to the axis of the cutting tool and the minimum distance from the third cutting edge to the axis of the cutting tool are both greater than the radius of the tool shank.
[0011] In some possible embodiments, the value range of the maximum diameter of the cutting part is 19 mm - 23 mm.
[0012] In some possible embodiments, the value range of the length of the cutting part in the axial direction of the cutting tool is 19 mm - 23 mm.
[0013] In some possible embodiments, the value range of the diameter of the tool shank is 14 mm - 18 mm.
[0014] In the cutting tool of the present application, by integrating the first cutting edge for machining the outer contour of the workpiece, the second cutting edge for machining the chamfer of the workpiece, and the third cutting edge for reducing the thickness of the workpiece on one tool to machine the workpiece, there is no need to switch tools during machining, the cutting efficiency is relatively high, and the deviation at the tool-changing position during tool switching is avoided, the relative positions between the contours on the workpiece can be guaranteed, and the dimensional stability of the outer contour of the workpiece after machining is relatively high. Description of the Drawings
[0015] Figure 1 is a schematic three-dimensional structure diagram of the cutting tool provided by the embodiment of the present utility model.
[0016] Figure 2 is Figure 1 a schematic three-dimensional structure diagram of the workpiece after being machined by the shown cutting tool.
[0017] Figure 3 is Figure 1 a schematic three-dimensional structure diagram of the shown cutting tool at another angle.
[0018] Figure 4 is Figure 1 the front view of the shown cutting tool.
[0019] Figure 5 is Figure 1 a schematic diagram of the machining state of the R-angle contour of the workpiece machined by the shown cutting tool.
[0020] Figure 6 is Figure 1 a schematic diagram of the machining state of the C-shaped contour of the workpiece machined by the shown cutting tool.
[0021] Figure 7 is Figure 1 a schematic diagram of the machining state of the top surface of the workpiece machined by the shown cutting tool.
[0022] Figure 8 isFigure 1 Schematic diagram of the machining state of the bottom surface of the workpiece machined by the shown cutting tool.
[0023] Description of main component symbols
[0024] Cutting tool 100
[0025] Tool shank 10
[0026] Cutting part 20
[0027] First cutting edge 21
[0028] First cutting surface 211
[0029] Second cutting surface 212
[0030] Arc surface 213
[0031] Second cutting edge 22
[0032] Third cutting edge 23
[0033] Fourth cutting edge 24
[0034] Workpiece 200
[0035] C-shaped contour 210
[0036] R-corner contour 220
[0037] Top surface 230
[0038] Bottom surface 240
[0039] The following specific embodiments will further illustrate the present utility model in conjunction with the above-mentioned drawings. Specific embodiments
[0040] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0041] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element. When an element is considered to be "disposed on" another element, it can be directly disposed on the other element or there may be an intermediate element.
[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model pertains. The terms used in the specification of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0043] Please refer to Figure 1 and Figure 2 , an embodiment of the present application provides a cutting tool 100 for machining the outer contour of a workpiece 200, wherein the machined workpiece 200 includes an R-corner contour 220, a C-shaped contour 210 connected to the R-corner contour 220, a top surface 230 provided on the side of the R-corner contour 220 away from the C-shaped contour 210, and a bottom surface 240 provided on the side of the C-shaped contour 210 away from the R-corner contour 220. Specifically, the cutting tool 100 includes a tool shank 10 and a cutting portion 20.
[0044] The cutting portion 20 is provided at one end of the tool shank 10. The tool shank 10 and the cutting portion 20 are integrally formed. In other application scenarios, the cutting tool 100 can also be a combined tool of a tool disc and a blade. In this case, the cutting edge is provided on the blade. Whether it is an integral tool or a combined tool, it should be regarded as within the protection scope of this utility model.
[0045] A part of the outer peripheral wall of the cutting portion 20 is recessed to form a first cutting edge 21 for machining the outer contour of the workpiece 200. At the end of the cutting portion 20 away from the tool shank 10, a second cutting edge 22 and a third cutting edge 23 are provided at intervals. Both the second cutting edge 22 and the third cutting edge 23 are located on the side of the first cutting edge 21 away from the tool shank 10. The second cutting edge 22 is used for machining the chamfer of the workpiece 200, and the third cutting edge 23 is used for cutting the surface of the workpiece 200 to reduce the thickness of the workpiece 200.
[0046] Specifically, the first cutting edge 21 machines the outer contour of the workpiece 200 to obtain the C-shaped contour 210, the second cutting edge 22 machines the chamfer of the workpiece 200 to obtain the R-corner contour 220, and the third cutting edge 23 cuts the top surface 230 of the workpiece 200 to reduce the thickness of the workpiece 200.
[0047] Please refer to Figure 3 , a fourth cutting edge 24 is provided at the end of the cutting portion 20 close to the tool shank 10. The fourth cutting edge 24 is located on the side of the first cutting edge 21 close to the tool shank 10 and is used for cutting the surface of the workpiece 200 to reduce the thickness of the workpiece 200. Specifically, the fourth cutting edge 24 cuts the bottom surface 240 of the workpiece 200 to reduce the thickness of the workpiece 200. In this way, the thickness of the machined workpiece 200 can be ensured to be within the required range.
[0048] It can be understood that the structures of the first cutting edge 21, the second cutting edge 22, the third cutting edge 23 and the fourth cutting edge 24 are only schematic in the figure, and their specific structures are not limited. As long as they can obtain the C-shaped contour 210, the R-shaped corner contour 220 and reduce the thickness of the workpiece 200, for example, the first cutting edge 21 may include a plurality of spiral cutting edges, and each cutting edge can machine the C-shaped contour 210.
[0049] Please refer to Figure 4 , the first cutting edge 21 includes two oppositely arranged first cutting surfaces 211 and a second cutting surface 212. The second cutting surface 212 is disposed between the two first cutting surfaces 211. The first cutting edge 21 and the second cutting edge 22 are transitionally connected by an arc surface 213. By cooperating the two first cutting surfaces 211 and a second cutting surface 212, the required C-shaped contour 210 can be machined on the workpiece 200.
[0050] The projected shape of the second cutting edge 22 on a plane parallel to the axis O of the cutting tool 100 is arc-shaped. In this way, the R-shaped corner contour 220 can be machined on the workpiece 200. It can be understood that in some embodiments, the projected shape of the second cutting edge 22 on a plane parallel to the axis O of the cutting tool 100 can be conical. In this way, an inclined surface, such as a 45-degree inclined surface, can be machined on the workpiece 200.
[0051] The end of the third cutting edge 23 away from the tool shank 10 is flush with the end of the second cutting edge 22 away from the tool shank 10. In this way, the space can be optimized, and it helps to achieve smoother and more precise cutting, and improve the roughness of the machined surface.
[0052] The second cutting edge 22 and the third cutting edge 23 are spaced apart in the direction of the axis O of the cutting tool 100. In this way, the mutual interference between the second cutting edge 22 and the third cutting edge 23 can be reduced, and by setting an appropriate spacing value, the distance between the bottom surface 240 and the top surface 230 of the machined workpiece 200 can be ensured.
[0053] The minimum distance from the second cutting edge 22 to the axis O of the cutting tool 100 and the minimum distance from the third cutting edge 23 to the axis O of the cutting tool 100 are both greater than the radius of the tool shank 10. That is to say, the distance from the second cutting surface 212 to the axis O of the cutting tool 100 and the minimum distance from the third cutting edge 23 to the axis O of the cutting tool 100 are both greater than the radius of the tool shank 10. In this way, the overall rigidity of the cutting tool 100 can be enhanced, the vibration and deformation during cutting can be reduced, it helps to achieve a more stable cutting effect, reduce the cutting force, and thus reduce the machining error of the workpiece 200.
[0054] The value range of the maximum diameter D1 of the cutting part 20 is 19 mm - 23 mm. This diameter range covers a variety of common cutting requirements, enabling the cutting tool 100 to be applicable to a variety of different machining scenarios and workpiece 200 sizes, improving the versatility of the cutting tool 100; and within this diameter range, a relatively high material removal rate can be achieved while ensuring the durability and lifespan of the cutting tool 100. Preferably, the value of the maximum diameter D1 of the cutting part 20 is 21 mm.
[0055] The value range of the length L of the cutting part 20 along the axis O direction of the cutting tool 100 is 19 mm - 23 mm. An appropriate cutting length helps to improve the cutting speed and material removal rate, thereby enhancing the machining efficiency; and it can ensure uniform distribution of the cutting force, reduce the vibration and deformation of the workpiece 200, and improve the accuracy and surface finish of the machined surface. Preferably, the value of the length L of the cutting part 20 along the axis O direction of the cutting tool 100 is 21 mm.
[0056] The value range of the diameter D2 of the tool shank 10 is 14 mm - 18 mm. In this way, the versatility of the tool shank 10 is increased, and it can be adapted to more types of cutting tools 100 and machine tools, which helps to improve the rigidity and stability of the cutting tool 100, thereby improving the cutting performance and machining quality. Preferably, the value of the diameter D2 of the tool shank 10 is 16 mm.
[0057] The implementation process of the cutting tool 100 in the embodiment of the present application is as follows:
[0058] First, make the machine tool clamp the tool shank 10 of the cutting tool 100, and then, please refer to Figure 5 , use the second cutting edge 22 of the cutting tool 100 to machine the chamfer of the workpiece 200 to obtain the R - angle profile 220. Next, please refer to Figure 6 , use the two first cutting surfaces 211 and one second cutting surface 212 of the first cutting edge 21 of the cutting tool 100 to machine the outer contour of the workpiece 200 to obtain the C - shaped profile 210. After that, please refer to Figure 7 , use the third cutting edge 23 of the cutting tool 100 to cut the top surface 230 of the workpiece 200 to reduce the thickness of the workpiece 200. Finally, please refer to Figure 8 , use the fourth cutting edge 24 of the cutting tool 100 to cut the bottom surface 240 of the workpiece 200 to reduce the thickness of the workpiece 200, so as to ensure the thickness of the machined workpiece 200 and obtain the machined workpiece 200.
[0059] In the cutting tool 100 of the present application, the workpiece 200 is machined by integrating the first cutting edge 21 for machining the outer contour of the workpiece 200, the second cutting edge 22 for machining the chamfer of the workpiece 200, and the third cutting edge 23 for reducing the thickness of the workpiece 200 on a single tool. During machining, there is no need to switch tools, reducing the in-machine setup frequency, having a relatively high cutting efficiency, and avoiding deviations at the tool-changing positions when switching tools. The relative positions between the contours on the workpiece 200 can be guaranteed, that is, the positional accuracy between various features can be effectively guaranteed, and the dimensional stability of the outer contour of the workpiece 200 after machining is relatively high.
[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.
Claims
1. A cutting tool, characterized in that: The cutting tool includes a shank and a cutting portion provided at one end of the shank, a portion of the outer peripheral wall of the cutting portion is concave to form a first cutting edge, the first cutting edge is used to process the outer contour of a workpiece, and an end of the cutting portion away from the shank is provided with a second cutting edge and a third cutting edge arranged at intervals, the second cutting edge and the third cutting edge are both located on the side of the first cutting edge away from the shank, the second cutting edge is used to process the chamfer of the workpiece, and the third cutting edge is used to cut the surface of the workpiece to reduce the thickness of the workpiece.
2. The cutting tool according to claim 1, characterized in that: The first cutting edge includes two first cutting surfaces and a second cutting surface that are arranged opposite to each other. The second cutting surface is arranged between the two first cutting surfaces. The first cutting edge and the second cutting edge are connected by an arc surface transition.
3. The cutting tool according to claim 1, characterized in that: The projection shape of the second cutting edge on a plane parallel to the axis of the cutting tool is an arc.
4. The cutting tool according to claim 1, characterized in that: An end of the third cutting edge away from the tool handle is flush with an end of the second cutting edge away from the tool handle.
5. The cutting tool according to claim 1, wherein: The second cutting edge and the third cutting edge are disposed at an interval in the axial direction of the cutting tool.
6. The cutting tool according to claim 1, wherein: A fourth cutting edge is provided at one end of the cutting portion close to the tool handle. The fourth cutting edge is located on a side of the first cutting edge away from the second cutting edge and is used for cutting the surface of a workpiece to reduce the thickness of the workpiece.
7. The cutting tool according to claim 1, wherein: The minimum distance from the second cutting edge to the axis of the cutting tool and the minimum distance from the third cutting edge to the axis of the cutting tool are both greater than the radius of the tool holder.
8. The cutting tool according to claim 1, characterized in that: The maximum diameter of the cutting portion ranges from 19 mm to 23 mm.
9. The cutting tool according to claim 8, wherein: The length of the cutting portion along the axial direction of the cutting tool ranges from 19 mm to 23 mm.
10. The cutting tool according to claim 8 or 9, characterized in that: The diameter of the shank is in the range of 14 mm to 18 mm.