Shock-resistant round nose knife
By setting a finishing edge and optimizing the cutting width and helix angle on the round nose cutter, the problem of insufficient vibration resistance of existing round nose cutters in the machining of aerospace aluminum alloys has been solved, achieving better surface quality and vibration resistance.
Patent Information
- Application Number
- CN202422769014.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-11-13
AI Technical Summary
Existing round nose cutters have poor vibration resistance when machining aerospace aluminum alloy parts, especially in parts with large and deep cavities and many deep grooves, and are prone to quality problems such as vibration marks.
An anti-vibration round nose cutter was designed. By setting a finishing edge on the cutting edge, the finishing edge extends from one end of the cutting edge to the other end. The finishing back angle of the finishing edge is 0.2°-1.5°. Combined with appropriate cutting edge width, helix angle, tool groove and R angle structure, the anti-vibration effect is improved.
It effectively reduces quality problems such as vibration marks, improves surface finish, enhances shock resistance, and is suitable for roughing, finishing, and polishing.
Smart Images
Figure CN223603510U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical processing technical field especially is related to an anti -shock round nose tool. BACKGROUND
[0002] In some fields, for example, the processing of aviation aluminum alloy, due to the existence of objective factors such as larger and deeper cavity of parts, more and deeper grooves of parts, the anti-shock ability of the existing round nose tool is poor, and the R corner corner of the part is very easy to produce vibration tool marks and other quality problems during rough and fine machining. SUMMARY
[0003] The utility model discloses at least one of the technical problems existing in the prior art is solved, and for this purpose, the utility model provides an anti-shock round nose tool, which can effectively reduce the generation of vibration tool marks and other quality problems.
[0004] The utility model discloses an anti-shock round nose tool, which comprises a core part comprising a connected end face and an outer peripheral surface, a plurality of cutting edges arranged on the core part, the cutting edges extending from the end face to the outer peripheral surface in a spiral manner, and a finishing edge included in the cutting edges, the finishing edge extending from one end of the cutting edge to the other end, and the finishing angle of the finishing edge being 0.2°-1.5°.
[0005] The anti-shock round nose tool provided by the utility model embodiment has at least the following beneficial effects:
[0006] By arranging the finishing edge on the cutting edge, the finishing edge extends from one end of the cutting edge to the other end, and the finishing angle of the finishing edge is 0.2°-1.5°, the finishing edge is continuous and has a suitable finishing angle, on the one hand, it is not easy to stick to the cutting edge, and on the other hand, it has good anti-shock effect and is not easy to produce vibration tool marks and other quality problems, and can process a better surface quality.
[0007] In one embodiment of the embodiment, the width of the finishing edge is 0.05mm-0.1mm.
[0008] In one embodiment of the embodiment, the number of the cutting edges is three, and the ratio of the core diameter of the core part to the outer diameter of the plurality of cutting edges is 0.45-0.55.
[0009] In one embodiment of the embodiment, the spiral angle of the cutting edge is 25°-35°.
[0010] In one embodiment of the embodiment, a tool groove is formed between the two adjacent cutting edges, and the rake angle of the tool groove is 14°-20°.
[0011] In one embodiment of the embodiment, the cutting edge comprises a bottom edge arranged on the end surface, the bottom edge comprises a first bottom edge relief surface and a second bottom edge relief surface, the first bottom edge relief surface corresponds to a first bottom edge relief angle of 10°-14°, and the second bottom edge relief surface corresponds to a second bottom edge relief angle of 24°-28°.
[0012] In one embodiment of the embodiment, the ratio of the edge width of the part corresponding to the first bottom edge relief surface of the bottom edge to the outer diameter of the plurality of cutting edges is 0.08-0.12.
[0013] In one embodiment of the embodiment, the bottom edge has a bottom edge rake angle of 10°-14°.
[0014] In one embodiment of the embodiment, the cutting edge comprises a peripheral edge arranged on the peripheral surface, the peripheral edge comprises a first peripheral edge relief surface and a second peripheral edge relief surface, the first peripheral edge relief surface corresponds to a first peripheral edge relief angle of 8°-12°, and the second peripheral edge relief surface corresponds to a second peripheral edge relief angle of 24°-30°.
[0015] In one embodiment of the embodiment, the cutting edge comprises a bottom edge arranged on the end surface and a peripheral edge arranged on the peripheral surface, the bottom edge is connected to the peripheral edge through an R-angle structure, a plurality of transition grooves are formed between the R-angle structures of adjacent two cutting edges, and the plurality of transition grooves are arranged in sequence along the cutting direction of the cutting edge.
[0016] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0017] The present application will be further described below in conjunction with the drawings and embodiments, wherein:
[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the anti-vibration round nose tool of one embodiment of the embodiment of the present application;
[0019] Figure 2 is Figure 1 a schematic diagram of the structure of the anti-vibration round nose tool in the front view direction of
[0020] Figure 3 is Figure 1 a schematic diagram of the structure of the anti-vibration round nose tool in the left view direction of
[0021] Figure 4 is Figure 1 a partial structure schematic diagram of the finishing edge of the anti-vibration round nose tool of
[0022] Figure 5 is Figure 1 a structure diagram of a tool groove and a cutting edge in the anti-vibration round nose tool;
[0023] Figure 6 is Figure 1 an angle diagram of a bottom edge in the anti-vibration round nose tool;
[0024] Figure 7 is Figure 1 an angle diagram of a peripheral edge in the anti-vibration round nose tool;
[0025] Figure 8 is Figure 1 a partial structure diagram of a tool groove at an R-angle structure in the anti-vibration round nose tool.
[0026] Reference signs:
[0027] Anti-vibration round nose tool 100; core 10; end face 101; outer peripheral surface 102; tool groove 103; transition groove 104; cutting edge 20; finishing edge 21; bottom edge 22; first bottom edge relief 221; second bottom edge relief 222; peripheral edge 23; first peripheral edge relief 231; second peripheral edge relief 232; R-angle structure 24; tool handle 30; axis 91; tooth gap 92. DETAILED DESCRIPTION
[0028] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.
[0029] In the description of the present application, it is understood that, if the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.
[0030] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If the first, second is described for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.
[0031] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing, connecting should be understood broadly, and the specific meaning of the above words in the utility model can be determined by the person skilled in the art in combination with the specific content of the technical scheme.
[0032] In the description of the utility model, the description of the reference terms ''an embodiment'', ''some embodiments'', ''illustrative embodiment'', ''example'', ''specific example'' or ''some examples'' means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0033] Please refer to Figures 1 to 3 , Figure 1 It is a three-dimensional structure schematic diagram of the anti-vibration round nose tool 100 of one embodiment of the utility model embodiment; Figure 2 It is Figure 1 The structure schematic diagram of the anti-vibration round nose tool 100 in the front direction of Figure 3 It is Figure 1 The structure schematic diagram of the anti-vibration round nose tool 100 in the left direction of the utility model embodiment provides an anti-vibration round nose tool 100, and the anti-vibration round nose tool 100 includes a core 10 and a plurality of cutting edges 20. The core 10 includes a connected end surface 101 and an outer peripheral surface 102. The plurality of cutting edges 20 is on the core 10, and the cutting edge 20 extends from the end surface 101 to the outer peripheral surface 102. The cutting edge 20 includes a finishing edge 21, and the finishing edge 21 extends from one end to the other end of the cutting edge 20, and the finishing angle of the finishing edge 21 is 0.2°-1.5°.
[0034] Specifically, the anti-vibration round nose tool 100 further includes a tool handle 30, the core 10 is connected to one end of the tool handle 30, and the core 10 has an end surface 101 facing away from the tool handle 30. The core 10 and the tool handle 30 have an axis 91. The finishing edge 21 is located at the position of the cutting edge 20 away from the core 10 in the radial direction. In the embodiment, the finishing edge 21 extends from the end close to the cutting edge 20 to the end close to the tool handle 30.
[0035] Specifically, the finishing angle of the finishing edge 21 can be selected as 0.2°, 0.7°, 1.1°, 1.5°, etc.
[0036] It can be understood that when the finishing angle of the finishing edge 21 is less than 0.2°, the phenomenon of sticking chips is prone to occur, thereby affecting processing. When the finishing angle of the finishing edge 21 is greater than 1.5°, the anti-vibration ability will be reduced, and quality problems such as vibration marks are prone to occur, and it is difficult to process a good surface quality.
[0037] By setting the dressing edge 21 on the cutting edge 20, the dressing edge 21 extends from one end to the other end of the cutting edge 20, and the dressing edge 21 has a dressing clearance angle of 0.2°-1.5°. The dressing edge 21 is continuous and has a suitable dressing clearance angle, which can prevent the dressing edge 21 from being easily stuck with chips and can also have a good anti-vibration effect, thereby preventing the generation of vibration marks and other quality problems and enabling the machining of a good surface quality.
[0038] In an embodiment of the embodiment, please refer to Figure 4 , Figure 4 is Figure 1 a partial structure diagram of the dressing edge 21 in the anti-vibration round nose tool 100 of . The width b1 of the dressing edge 21 is 0.05mm-0.1mm. It can be understood that when the width b1 of the dressing edge 21 is less than 0.05mm, the structural strength of the dressing edge 21 is insufficient. When the width b1 of the dressing edge 21 is greater than 0.1mm, the cutting force of the dressing edge 21 is insufficient. Specifically, the width b1 of the dressing edge 21 can be selected as 0.05mm, 0.08mm, 0.09mm, 1.00mm, etc. By setting the width b1 of the dressing edge 21 to 0.05mm-0.1mm, the problem of insufficient rigidity of the cutting edge due to excessively sharp cutting edge, easy chipping, rapid wear, etc. can be effectively avoided, thereby improving the anti-chipping ability of the cutting edge.
[0039] In an embodiment of the embodiment, please refer to Figure 3 and Figure 5 , Figure 5 is Figure 1 a structure diagram of the tool groove 103 and the cutting edge 20 in the anti-vibration round nose tool 100 of . The number of the cutting edges 20 is 3, and the ratio of the core diameter d1 of the core 10 to the outer diameter d2 of the plurality of cutting edges 20 is 0.45-0.55. Specifically, the ratio of the core diameter d1 to the outer diameter d2 can be selected as 0.45, 0.48, 0.50, 0.52, 0.55, etc., and is preferably 0.50. By satisfying the above setting, the anti-vibration round nose tool 100 has a chip space that can meet the requirements of rough and fine machining, and also has good rigidity during fine machining.
[0040] In an embodiment of the embodiment, please refer to Figure 2 , the helix angle a1 of the cutting edge 20 is 25°-35°. Specifically, the helix angle a1 of the cutting edge 20 can be selected as 25°, 26°, 28°, 32°, 35°, etc. By such setting, the cutting edge 20 has a suitable helix angle a1, the cutting edge has good rigidity and strength, and the axial component force is reduced, thereby reducing the generation of boundary burrs.
[0041] In an embodiment of the embodiment, please refer to Figure 5The tool groove 103 is formed between the two adjacent cutting edges 20, and the rake angle c1 of the tool groove 103 is 14°-20°. Specifically, the rake angle c1 of the tool groove 103 can be selected as 14°, 16°, 18°, 20°, etc. In this way, the anti-vibration round nose tool 100 has good cutting sharpness, and even at the R angle transition corner in the cavity, the cutting resistance can be reduced, and the possibility of vibration can be reduced.
[0042] In an embodiment of this embodiment, please refer to Figure 1 、 Figure 4 and Figure 6 , Figure 6 is Figure 1 the angle diagram of the bottom edge 22 of the anti-vibration round nose tool 100. The cutting edge 20 includes the bottom edge 22, which is provided on the end face 101, and the bottom edge 22 includes a first bottom edge relief surface 221 and a second bottom edge relief surface 222. The first bottom edge relief surface 221 corresponds to a first bottom edge relief angle c2 of 10°-14°, and the second bottom edge relief surface 222 corresponds to a second bottom edge relief angle c3 of 24°-28°. Specifically, the first bottom edge relief surface 221 is closer to the finishing edge 21 than the second bottom edge relief surface 222. The first bottom edge relief angle c2 can be selected as 10°, 11°, 12°, 14°, etc. The second bottom edge relief angle c3 can be selected as 24°, 26°, 28°, etc. In this way, the bottom edge 22 has good sharpness and reduces cutting resistance.
[0043] In an embodiment of this embodiment, please refer to Figure 6 , the bottom edge 22 has a bottom edge rake angle c4 of 10°-14°. Specifically, the bottom edge rake angle c4 can be selected as 10°, 11°, 13°, 14°, etc. In this way, the sharpness of the bottom edge 22 can be further improved, and the cutting resistance can be reduced.
[0044] In an embodiment of this embodiment, please refer to Figure 6 , the ratio of the edge width b2 of the part corresponding to the first bottom edge relief surface 221 of the bottom edge 22 to the outer diameter d2 of the plurality of cutting edges 20 is 0.08-0.12. In this embodiment, the outer diameter d2 is 16 mm, so as to be suitable for cutting parts in the field of aviation. Specifically, the ratio of the edge width b2 to the outer diameter d2 can be selected as 0.08, 0.10, 0.12, etc. In this way, the part corresponding to the first bottom edge relief surface 221 of the bottom edge 22 has a suitable edge width b2, and the bottom edge 22 has good strength while having good cutting force.
[0045] In an embodiment of this embodiment, please refer to Figure 1 、 Figure 4 and Figure 7 , Figure 7 is Figure 1The angle diagram of the peripheral edge 23 in the anti-vibration round nose tool 100. The cutting edge 20 includes the peripheral edge 23 arranged on the outer peripheral surface 102, the peripheral edge 23 includes a first peripheral edge relief surface 231 and a second peripheral edge relief surface 232, the first peripheral edge relief surface 231 corresponds to a first peripheral edge relief angle c5 of 8°-12°, and the second peripheral edge relief surface 232 corresponds to a second peripheral edge relief angle c6 of 24°-30°. Specifically, the first peripheral edge relief surface 231 is close to the finishing edge 21 relative to the second peripheral edge relief surface 232. Specifically, the first peripheral edge relief angle c5 can be selected as 8°, 10°, 12°, etc. The second peripheral edge relief angle c6 can be selected as 24°, 26°, 28°, 30°, etc. In this way, the cutting heat is small and the cutting is fast, so that the cutting heat can be conducted and dissipated in time during cutting, prolonging the service life.
[0046] In this embodiment, the ratio of the blade width b3 of the part corresponding to the first peripheral edge relief surface 231 of the peripheral edge 23 to the outer diameter d2 is 0.07, and the peripheral edge 23 has a peripheral edge 23 rake angle c7 of 14°-20°, so that the peripheral edge 23 has ideal structural strength and good cutting force.
[0047] In one embodiment of this embodiment, please refer to Figure 1 , Figure 3 and Figure 8 , Figure 8 is Figure 1 the partial structure diagram of the tool groove 103 at the R-angle structure 24 in the anti-vibration round nose tool 100. The bottom edge 22 is connected with the peripheral edge 23 through the R-angle structure 24, and a plurality of transition grooves 104 are formed between the R-angle structures 24 of two adjacent cutting edges 20, and the plurality of transition grooves 104 are arranged in sequence along the cutting direction of the cutting edge 20. Specifically, in this embodiment, the number of transition grooves 104 is 3, and the 3 transition grooves 104 are arranged outward from the tooth gap 92 and simultaneously extend along the axial direction and the radial direction. The specific size can be referred to Figure 8 . In other embodiments, the number of transition grooves 104 can also be other numbers, for example, 4. Specifically, the transition groove 104 is actually part of the tool groove 103. It can be understood that the R-angle structure 24 is designed as a plurality of transition grooves 104 to ensure the sharp rake angle at the R-angle, so that the rake angle of the R-angle structure 24 changes slowly when transitioning from the bottom edge 22 to the peripheral edge 23, has a continuous sharp cutting performance, thereby providing a stable cutting force, which can effectively reduce the occurrence of vibration and adhesion and other problems.
[0048] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above-mentioned embodiments, and within the scope of knowledge possessed by ordinary skilled in the art, various changes can be made without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.
Claims
1. A shock-resistant round nose blade, characterized in that, include: The core includes the connected end face and the outer peripheral face; Multiple cutting edges are disposed in the core, the cutting edges extend spirally from the end face to the outer peripheral face, the cutting edges include a finishing edge, the finishing edge extends from one end of the cutting edge to the other end, and the finishing back angle of the finishing edge is 0.2°-1.5°.
2. The anti-vibration round nose blade according to claim 1, characterized in that, The width of the finishing blade is 0.05mm-0.1mm.
3. The anti-vibration round nose blade according to claim 1, characterized in that, The number of cutting edges is 3, and the ratio of the core diameter of the core to the outer diameter of the plurality of cutting edges is 0.45-0.
55.
4. The anti-vibration round nose blade according to claim 1, characterized in that, The helix angle of the cutting edge is 25°-35°.
5. The anti-vibration round nose blade according to claim 1, characterized in that, A groove is formed between two adjacent cutting edges, and the rake angle of the groove is 14°-20°.
6. The anti-vibration round nose blade according to claim 1, characterized in that, The cutting edge includes a bottom edge, which is disposed on the end face. The bottom edge includes a first bottom edge relief face and a second bottom edge relief face. The first bottom edge relief angle corresponding to the first bottom edge relief face is 10°-14°, and the second bottom edge relief angle corresponding to the second bottom edge relief face is 24°-28°.
7. The anti-vibration round nose blade according to claim 6, characterized in that, The ratio of the width of the portion of the bottom edge corresponding to the back face of the first bottom edge to the outer diameter of the plurality of cutting edges is 0.08-0.
12.
8. The anti-vibration round nose blade according to claim 6, characterized in that, The bottom edge rake angle is 10°-14°.
9. The anti-vibration round nose blade according to claim 1, characterized in that, The cutting edge includes a peripheral edge, which is disposed on the outer peripheral surface. The peripheral edge includes a first peripheral edge relief face and a second peripheral edge relief face. The first peripheral edge relief angle corresponding to the first peripheral edge relief face is 8°-12°, and the second peripheral edge relief angle corresponding to the second peripheral edge relief face is 24°-30°.
10. The anti-vibration round nose blade according to claim 1, characterized in that, The cutting edge includes a bottom edge and a peripheral edge. The bottom edge is located on the end face, and the peripheral edge is located on the outer peripheral face. The bottom edge is connected to the peripheral edge through a radius (R) structure. Multiple transition grooves are formed between the radius (R) structures of two adjacent cutting edges. The multiple transition grooves are arranged sequentially along the cutting direction of the cutting edge.