Double-sided six-edge square shoulder milling cutter blade
By designing a peach-shaped structured double-sided six-edged square shoulder milling insert, the vibration tool problem in thin-walled parts is solved, and high-precision cutting effect is achieved.
Patent Information
- Application Number
- CN202422503429.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-10-16
AI Technical Summary
When milling and processing thin-walled parts and structural parts with poor rigidity, unstable parts lead to vibration tooling, affecting cutting accuracy and insert life.
The double-sided six-edged square shoulder milling cutter is designed as a peach-shaped structure, with three inverted V-shaped ridges and arc blades. The waste chips flow along the large front angle flow groove and are exported through the chip discharge groove to reduce axial force.
The force on the workpiece is reduced, ensuring the cutting accuracy of the thin-walled parts and the service life of the insert.
Smart Images
Figure CN223198118U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of milling cutters, in particular to a double-sided six-edged square shoulder milling insert. Background Art
[0002] During the milling process of thin-walled parts and structural parts with poor rigidity, it is difficult to meet high-precision processing requirements due to the relatively poor stability of the material itself. At the same time, the instability of the material can easily lead to tool vibration. The vibration of the material and the tool, as well as the cutting action, will quickly generate a large amount of heat on the tool and the material, further affecting the cutting accuracy and the service life of the blade. Utility Model Content
[0003] In response to the problems existing in the above-mentioned prior art, the utility model provides a double-sided six-edged square shoulder milling insert. By setting the insert as a peach-shaped structure and arranging three inverted V-shaped prisms at its upper and lower ends, six cutting edges can be formed on the insert body, and the waste chips generated during the cutting process of each cutting edge can flow along the large rake angle chip flow groove and be discharged through the chip discharge groove. The inverted V-shaped prism and the forming edges and arc edges at the corners cooperate, and the axial force during cutting is small, and the force on the workpiece is small. It can be used for square shoulder milling or plane milling of thin-walled parts that are difficult to process and can ensure cutting accuracy.
[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is as follows:
[0005] A double-sided six-edged square shoulder milling insert, wherein the insert body is formed with an upper end face, a lower end face and a plurality of side end faces connected therebetween, wherein the side end faces connected in pairs are smoothly connected by arc surfaces, and the cross section of the insert body is a peach-shaped structure;
[0006] Three inverted V-shaped prisms are formed on the upper end face and the lower end face at their corners, and a cutting edge and an arc edge are formed at the intersection of each prism, the side end face and the arc surface. A chip groove is formed on each prism, and each chip groove is connected to the cutting edge, the arc edge and the upper end face / lower end face arc surface;
[0007] A positioning hole groove penetrating the upper end surface and the lower end surface is provided in the middle of the blade body.
[0008] As a further elaboration of the above technical solution:
[0009] In the above technical solution, each of the chip grooves includes a first rake face, a second rake face and a chip guide face, the first rake face is an inclined surface and forms a first rake angle with the horizontal plane, the first rake angle is between 16° and 20°, the second rake face is a curved surface and forms a second rake angle with the horizontal plane, the second rake angle is between 19° and 23°.
[0010] In the above technical solution, the width of each of the first rake faces is between 0.35-0.5 mm, the distance between each of the second rake faces and the first rake face is between 0.14 mm and 0.2 mm, the height of each of the prisms is between 0.6 mm and 0.9 mm, and the angle between each of the chip guide surfaces and the horizontal plane is between 22° and 26°.
[0011] In the above technical solution, both ends of each side end face form an acute angle and an obtuse angle with the other adjacent side end face, and each of the acute angles is 75°.
[0012] In the above technical solution, the radius of each of the arc blades is between 0.6 mm and 1.5 mm.
[0013] In the above technical solution, the blade body is a ground blade body.
[0014] In the above technical solution, a finishing surface is formed on each of the arc surfaces. Each of the finishing surfaces is a plane and extends onto one of the arc edges to form a finishing edge. One end of each of the finishing edges is connected to one of the cutting edges.
[0015] In the above technical solution, the blade body is a pressed blade body, and the flat widths of the cutting edge and the arc edge thereof are both between 0.02 mm and 0.04 mm.
[0016] Compared with the prior art, the beneficial effect of the present invention is that by setting the blade into a peach-shaped structure and arranging three inverted V-shaped prisms at its upper and lower ends, six cutting edges can be formed on the upper and lower end faces of the blade body. The waste chips generated during the cutting process of each cutting edge can flow along the large rake angle chip flow groove and be discharged through the chip discharge groove. The inverted V-shaped prism and the forming edges and arc edges at its edges and corners cooperate, the axial force during cutting is small, and the force on the workpiece is small. It can be used for square shoulder milling or plane milling of thin-walled parts that are difficult to process and can ensure cutting accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural diagram of embodiment 1;
[0018] Figure 2 yes Figure 1 The enlarged structural diagram of the middle D part;
[0019] Figure 3 yes Figure 1 The main view;
[0020] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of EE;
[0021] Figure 5 It is a structural diagram of embodiment 2;
[0022] Figure 6 It is an enlarged structural schematic diagram of a circular arc blade in Example 3.
[0023] In the figure: 1. Upper end face; 2. Lower end face; 3. Side end face; 4. Cambered surface; 5. Prism; 6. Cutting edge; 7. Arc edge; 8. Chip groove; 801. First rake face; 802. Second rake face; 803. Chip guide face; 9. Positioning hole groove; 10. Finishing surface; 11. Finishing edge; 12. Flat width; 100. Horizontal plane; A. First rake angle; B. Second rake angle; C. Angle between the chip guide face and the horizontal plane; L1. Width of the first rake face; L2. Distance between the second rake face and the first rake face 801; L3. Height of the prism. DETAILED DESCRIPTION
[0024] The present invention will be further described in detail below with reference to the accompanying drawings.
[0025] The embodiments described with reference to the accompanying drawings are illustrative and intended to explain the present application, and should not be construed as limiting the present application. In the description of this application, it should be understood that terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or to implicitly specify the number of the technical features referred to. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this application, "several" and "a plurality" mean two or more, unless otherwise specifically defined. In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; or internal communication between two components. A person skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. In this application, unless otherwise specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them. Furthermore, "above," "above," and "above" a first feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher level than the second feature. "Below," "below," and "below" a first feature may include the first feature being directly below or diagonally below the second feature, or simply indicate that the first feature is at a lower level than the second feature.
[0026] Example 1
[0027] like Figure 1-3 As shown, the double-sided six-edged square shoulder milling insert has a ground insert body, on which are formed an upper end face 1, a lower end face 2 and a plurality of side end faces 3 connected therebetween. The side end faces 3 connected in pairs are smoothly connected by arc surfaces 4. The cross section of the insert body is a peach-shaped structure.
[0028] Three inverted V-shaped prisms 5 are formed on the upper end face 1 and the lower end face 2 at their corners. A cutting edge 6 and a circular arc edge 7 are formed at the intersection of each prism 5 with the side end face 3 and the arc surface 4. A chip groove 8 is formed on each prism 5. Each chip groove 8 is connected to the cutting edge 6, the circular arc edge 7 and the arc surface of the upper end face 1 / lower end face 2;
[0029] A positioning hole 9 is provided in the middle of the blade body and passes through the upper end surface 1 and the lower end surface 2.
[0030] like Figure 4 As shown, in some embodiments of the present invention, each chip groove 8 includes a first rake face 801, a second rake face 802 and a chip guide face 803, the first rake face 801 is an inclined surface and forms a first rake angle A with the horizontal plane 100, and the first rake angle A is between 16° and 20°, the second rake face 802 is a curved surface and forms a second rake angle B with the horizontal plane 100, and the second rake angle B is between 19° and 23°, the width L1 of each first rake face 801 is between 0.35-0.5mm, the distance L2 between each second rake face 802 and the first rake face 801 is between 0.14mm and 0.2mm, the height L3 of each prism 5 is between 0.6mm and 0.9mm, and the angle C between each chip guide face 803 and the horizontal plane 100 is between 22° and 26°.
[0031] In this embodiment, the first rake angle A is 18.3°, the second rake angle B is 21.75°, the width L1 of the first rake surface 801 is 0.42 mm, the distance L2 between the second rake surface 802 and the first rake surface 801 is 0.17 mm, the height L3 of the prism 5 is 0.71 mm, and the angle C between the chip guide surface 803 and the horizontal plane 100 is 24.5°.
[0032] During cutting, the cutting edge 6 and the arc edge 7 start cutting after contacting the workpiece. As the processing proceeds, chips are gradually generated and flow along the large rake angle chip groove 8. Depending on the cutting depth, part or all of the chips pass through the first rake face 801, the second rake face 802, the chip guide surface 803 and hit the upper plane 1 or the lower plane 2 and are guided out. The inverted V-shaped prism 5 and the forming edges 6 and the arc edge 7 at its edges and corners cooperate. The axial force during cutting is small, and the force exerted by the tool on the workpiece is small. It can be used for shoulder milling or plane milling of thin-walled parts that are difficult to process and can ensure cutting accuracy.
[0033] Specifically, each side end face 3 forms an acute angle and an obtuse angle with the adjacent other side end face 3, and each acute angle is 75 degrees. The radius of each arc edge 7 is between 0.6 mm and 1.5 mm. In this embodiment, the radius of the arc edge is 1.0 mm.
[0034] Example 2
[0035] like Figure 5 As shown, in this embodiment, a finishing surface 10 is formed on each arc surface 4. Each finishing surface 10 is a plane and extends to a circular arc edge 7 to form a finishing edge 11. One end of each finishing edge 11 is connected to a cutting edge 6.
[0036] Example 3
[0037] like Figure 6 As shown, the blade body in this embodiment is formed by pressing the blade body. All side surfaces 3 and the arc edge 7 are not ground. The flat width 12 of the cutting edge 6 and the arc edge 7 is between 0.03mm and 0.04mm. In practice, the flat width 12 can also be expanded to 0.02mm to 0.04mm according to actual conditions. Compared with conventional ground blades, pressed blades can form a relatively large first rake angle A, which is compatible with the sharpness and mechanical strength of the cutting edge and can be applied to conventional steel and cast iron processing.
[0038] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. Double-sided six-edged square shoulder milling insert, characterized by: The blade body is formed with an upper end face, a lower end face and a plurality of side end faces connected therebetween, and the side end faces connected in pairs are smoothly connected by arc surfaces, and the cross section of the blade body is a peach-shaped structure; Three inverted V-shaped prisms are formed on the upper end face and the lower end face at their corners, and a cutting edge and an arc edge are formed at the intersection of each prism, the side end face and the arc surface. A chip groove is formed on each prism, and each chip groove is connected to the cutting edge, the arc edge and the upper end face / lower end face arc surface; A positioning hole groove penetrating the upper end surface and the lower end surface is provided in the middle of the blade body.
2. The double-sided six-edged shoulder milling insert according to claim 1, characterized in that: Each of the chip grooves includes a first rake face, a second rake face and a chip guide face, wherein the first rake face is an inclined surface and forms a first rake angle with the horizontal plane, and the first rake angle is between 16° and 20°, and the second rake face is a curved surface and forms a second rake angle with the horizontal plane, and the second rake angle is between 19° and 23°.
3. The double-sided six-edged square shoulder milling insert according to claim 2, characterized in that: The width of each first rake face is between 0.35-0.5 mm, the distance between each second rake face and the first rake face is between 0.14 mm and 0.2 mm, the height of each prism is between 0.6 mm and 0.9 mm, and the angle between each chip guide surface and the horizontal plane is between 22° and 26°.
4. The double-sided six-edged shoulder milling insert according to claim 1, characterized in that: The two ends of each side end face form an acute angle and an obtuse angle with the other adjacent side end face, and each of the acute angles is 75°.
5. The double-sided six-edged square shoulder milling insert according to any one of claims 1 to 4, characterized in that: The radius of each arc edge is between 0.6 mm and 1.5 mm.
6. The double-sided six-edged square shoulder milling insert according to claim 5, characterized in that: The blade body is a ground blade body.
7. The double-sided six-edged square shoulder milling insert according to claim 6, characterized in that: A finishing surface is formed on each of the arc surfaces. Each of the finishing surfaces is a plane and extends onto one of the arc edges to form a finishing edge. One end of each of the finishing edges is connected to one of the cutting edges.
8. The double-sided six-edged square shoulder milling insert according to claim 5, characterized in that: The blade body is a pressed blade body, and the flat widths of the cutting edge and the arc edge are both between 0.02mm and 0.04mm.