Indexable anti-attrition turning tool blade for cutting high-temperature alloy
By designing a diamond-shaped turning blade with an angle of 80°, combining V-shaped microtexture, triangular chip-breaking boss and combined microtexture, the problems of large cutting force and poor heat dissipation in high-temperature alloy cutting processing are solved, achieving more efficient Lubrication and heat dissipation extend tool life and improve workpiece surface quality.
Patent Information
- Application Number
- CN202421175792.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-07
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In cutting processing, high-temperature alloys have problems such as large cutting force, poor heat dissipation ability of the tool, difficult chips to break and poor surface quality, resulting in short tool service life and poor surface quality of the processed workpiece.
An indexable grinding blade is designed, with a diamond with an angle of 80°, and is equipped with a V-shaped microtexture, a triangular chip-like boss, an elliptical protrusion and a combined microtexture, which increases lubrication. The agent storage, heat dissipation area and chip breaking capacity reduce cutting force and temperature, and improve cooling efficiency through fastening screw holes and channel fixation and drainage.
It effectively reduces cutting force and temperature, improves the tool's wear resistance and service life, and improves the surface quality and production efficiency of the workpiece.
Smart Images
Figure CN222308120U_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of cutting tools, in particular to an indexable wear-reducing turning blade for cutting high-temperature alloys. Background Art
[0002] In recent years, high-end manufacturing industries such as aerospace are developing rapidly, and the application of high-temperature alloy materials has also been greatly improved. Due to its excellent organizational stability, it can work for a long time in harsh environments such as high temperature and high stress, and can still maintain organizational stability, high fatigue strength, yield strength, tensile strength and anti-oxidation corrosion performance. Therefore, more and more high-temperature alloy materials are used in aerospace and shipbuilding industries. However, due to poor machinability and low thermal conductivity, high-temperature alloy materials will not only produce serious work hardening during the cutting process, but also easily cause large cutting forces, high cutting temperatures, chips that are not easy to break, and tool wear. The phenomenon is relatively serious, resulting in short tool life and poor surface quality of the workpiece. Since the commonly used cemented carbide blades are still insufficient, the design and development of blades in high-temperature alloy cutting needs to be further strengthened. The micro-texture on the tool surface can reduce the tool-chip contact length, capture impurities such as abrasive particles and chips, and store lubricating fluid, thereby improving the tool's wear resistance and cutting performance, thereby improving the workpiece surface quality and the service life of the cutting tool. Summary of the invention
[0003] The utility model aims to provide an indexable and wear-reducing turning insert for cutting high-temperature alloys in view of the problems of existing turning inserts in high-temperature alloy cutting, such as large cutting force, poor heat dissipation capacity of the tool, difficult chip breaking, poor surface quality and severe tool wear.
[0004] In order to solve the technical problems encountered in the cutting process of the above-mentioned high-temperature alloy, the utility model adopts the following technical solutions: the main body of the turning blade is designed as a rhombus with an angle of 80°, and the horizontal cross-section is centrally symmetrical. A fastening screw hole is provided at the center of the turning blade, and the blade is fixed to the arbor through the fastening screw hole. Straight cutting edges are provided around the front cutting edge, and the acute angle where every two straight cutting edges intersect is an arc cutting tip, a V-shaped micro-texture is provided at the arc cutting tip, a triangular chip breaking boss is provided near the V-shaped micro-texture, an elliptical protrusion is provided near the straight cutting edge on the front cutting edge, a combined micro-texture is provided on the back cutting edge of the blade, an octagonal heat sink is provided in the middle area of the blade body, a heat dissipation groove is provided on the octagonal heat sink, and a guide groove is provided between the octagonal heat sink and the triangular chip breaking boss.
[0005] The beneficial effect is: the turning blade of the utility model is provided with a V-shaped micro-texture on the front cutting edge near the arc cutting edge, which can store a small amount of lubricant or cutting fluid, improve the surface lubrication state, and enable the tool to have better cutting conditions; on the other hand, it can reduce the tool-chip contact length, improve friction and heat dissipation conditions, thereby reducing cutting force and cutting temperature, and has a wear-reducing and wear-resistant effect.
[0006] The turning blade of the utility model is provided with an elliptical protrusion on the front cutting surface near the straight cutting edge, which can increase the contact area between the tool and the cooling medium, take away part of the cutting heat, and reduce the possibility of bonding wear; it can also make the chips more easily bend and deform, which is helpful for breaking the chips and performing auxiliary chip breaking.
[0007] The turning blade of the utility model is provided with a triangular chip breaking boss near the V-shaped micro-texture, which can increase the arc tool tip strength and the ability to resist chipping; when the chips flow toward the chip breaking boss, the chip curling radius becomes smaller, so that the curling strain generated inside the chips increases, which is conducive to the breaking of the chips and keeps the chips away from the processed surface of the workpiece to prevent the surface from being scratched.
[0008] The turning blade of the utility model is provided with an octagonal heat sink in the middle area, the draft angle of the heat sink is 15°, and the edge is arc-shaped, which increases the heat dissipation area of the tool; it also has the function of guiding chips to prevent chips from being entangled; when the turning blade and the tool rod are clamped by the fastening screw hole, it can also play a supporting and positioning role, reducing the vibration of the tool during processing.
[0009] The turning blade of the utility model is provided with a heat dissipation groove on the octagonal heat dissipation platform. The heat dissipation groove is an arc-shaped groove, which can increase the heat dissipation area and store a small amount of coolant to better cool the tool.
[0010] The turning tool of the utility model is provided with a guide groove between the octagonal heat dissipation platform and the triangular chip breaking boss to improve the fluidity of the coolant. The coolant can flow better through the guide groove to the straight cutting edge below the chip, dissipate the cutting heat generated by the tool during the machining process, and reduce the overall temperature of the blade.
[0011] The turning tool of the utility model adopts a double-sided usable design, has eight effective cutting edges, and can be quickly changed through rotation and flipping to reduce the tool change time, thereby improving production efficiency.
[0012] The turning tool of the utility model is provided with a V-shaped and square combined micro-texture structure array parallel to the cutting edge at a position near the straight cutting edge on the back face of the tool. The combined micro-texture can reduce the friction coefficient between the tool and the workpiece surface, reduce the friction force, and thus generate smaller cutting force and cutting temperature, which can effectively prevent the tool back face from premature wear or damage, thereby improving the quality of the processed surface and the service life of the tool. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is the front view of the utility model;
[0014] Figure 2 It is a top view of the utility model;
[0015] Figure 3 yes Figure 1 AA direction cross-sectional view;
[0016] Figure 4 yes Figure 1 A partial enlarged view of location Ⅰ;
[0017] Figure 5 yes Figure 2 A partial enlarged view of location II;
[0018] Figure 6 It is a three-dimensional schematic diagram of the utility model.
[0019] Markings in the figure: 1-V-shaped micro texture; 2-triangular chip breaker boss; 3-front face; 4-straight cutting edge; 5-heat dissipation groove; 6-combined micro texture; 7-arc blade tip; 8-elliptical protrusion; 9-flow guide groove; 10-octagonal heat dissipation platform. 11-fastening screw hole DETAILED DESCRIPTION
[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. In the present invention, terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "upper", "lower", "left", "right" and the like indicating orientation or positional relationship are based on the orientation and positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the specific protection scope of the present invention.
[0021] Combination Figure 1-Figure 6The present embodiment is described. The present embodiment is an indexable wear-reducing turning insert for cutting high-temperature alloys. The main body of the turning insert is designed to be a rhombus with an angle of 80°. The horizontal cross section is centrally symmetrical. A fastening screw hole (11) is provided at the center of the turning insert. The insert is fixed to the tool bar through the fastening screw hole (11). Straight cutting edges (4) are provided around the front cutting surface (3). The sharp angle where each two straight cutting edges (4) intersect is a circular arc tip (7). The circular arc tip (7) is A V-shaped micro-texture (1) is provided, a triangular chip-breaking boss (2) is provided near the V-shaped micro-texture (1), an elliptical protrusion (8) is provided on the front cutting surface (3) near the straight cutting edge (4), a combined micro-texture (6) is provided on the back cutting surface of the blade, an octagonal heat sink (10) is provided in the middle area of the blade body, a heat dissipation groove (5) is provided on the octagonal heat sink (10), and a guide groove (9) is provided between the octagonal heat sink (10) and the triangular chip-breaking boss (2).
[0022] Alternatively, if Figure 1 and Figure 4 As shown, the texture width of the V-shaped micro-texture (1) described in this embodiment is 20 μm, the texture V-shaped height is 70 μm, the depth is 40 μm, and the V-shaped symmetry axis is parallel to the long diagonal of the rhombus; this design can store a small amount of lubricant or cutting fluid, improve the surface lubrication state, reduce the tool-chip contact length, improve the friction and heat dissipation conditions, thereby reducing the cutting force and cutting temperature, and has a wear-reducing and wear-resistant effect.
[0023] Alternatively, if Figure 1 As shown, the arc radius of the arc tip (7) described in this embodiment is 0.8mm, which has the effect of improving the tip strength and alleviating stress concentration, and can improve the quality of the processed surface. The chamfer width of the straight cutting edge (4) is 0.05mm, which can reduce the cutting force and lower the temperature, and ensure the strength of the cutting edge.
[0024] Alternatively, if Figure 1 and Figure 6 As shown, the large circle diameter of the elliptical protrusion (8) described in this embodiment is 0.2mm, and the small circle diameter is 0.1mm, which can increase the contact area between the tool and the cooling medium, take away part of the cutting heat, and reduce the possibility of bonding wear; it can also make the chips easier to bend and deform, which helps to break the chips and assist in chip breaking.
[0025] Alternatively, if Figure 1 As shown, the octagonal heat sink (10), the triangular chip breaker (2) and the elliptical protrusion (8) described in this embodiment all have a draft angle of 15°.
[0026] Optionally, combined Figure 2 and Figure 5The present embodiment is described. The back face of the present embodiment is the area where the blade contacts the workpiece. A combined micro-texture (6) consisting of a V-shaped micro-texture and a square pit micro-texture is provided on the back face. A V-shaped micro-texture and a square pit micro-texture with a side length of 40 μm and a pit depth of 40 μm are distributed in a linear array below the edge of the straight cutting edge (4) and the arc tool tip (7). During the cutting process, the workpiece will be squeezed and rubbed by the back face of the tool. The combined micro-texture (6) can reduce the friction coefficient between the tool and the workpiece surface, reduce the friction force, and thus generate a smaller cutting force and cutting temperature, which can effectively prevent the back face of the tool from premature wear or damage, thereby improving the quality of the processed surface and the service life of the tool.
[0027] Although this article uses more terms such as blade body, straight cutting edge, front cutting face, arc cutting tip, triangular chip breaking boss, heat dissipation groove, guide groove, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model.
[0028] Although the embodiments of the present invention have been shown and described above, those skilled in the art should understand that the above embodiments are exemplary, and that the above embodiments may be changed, modified, replaced and modified without departing from the principle and essence of the present invention as defined in the appended claims, and all of these are within the scope of protection of the present invention.
Claims
1. An indexable wear-reducing turning insert for cutting high-temperature alloys, characterized in that: The main body of the turning blade is designed to be a rhombus with an angle of 80 degrees, and the horizontal cross section is centrally symmetrical. A fastening screw hole (11) is provided at the center of the turning blade, and the blade is fixed to the blade rod through the fastening screw hole (11). Straight cutting edges (4) are provided around the front blade surface (3), and the acute angle where every two straight cutting edges (4) intersect is a circular arc blade tip (7). A V-shaped micro-texture (1) is provided at the circular arc blade tip (7), and a triangular chip breaking boss (2) is provided near the V-shaped micro-texture (1). An elliptical protrusion (8) is provided on the front blade surface (3) near the straight cutting edge (4), and a combined micro-texture (6) is provided on the blade back face. An octagonal heat sink (10) is provided in the middle area of the blade body, and a heat dissipation groove (5) is provided on the octagonal heat sink (10). A guide groove (9) is provided between the octagonal heat sink (10) and the triangular chip breaking boss (2).
2. The indexable wear-reducing turning insert for cutting high-temperature alloys according to claim 1, characterized in that: The texture width of the V-shaped micro-texture (1) is 20 μm, the texture V-shaped height is 70 μm, the depth is 40 μm, and the V-shaped symmetry axis is parallel to the long diagonal line of the rhombus.
3. The indexable wear-reducing turning insert for cutting high-temperature alloys according to claim 1, characterized in that: The draft angle of the triangular chip-breaking boss (2) is 15°, which can improve the chip-breaking ability of the blade and increase the arc blade tip strength and chipping resistance.
4. The indexable wear-reducing turning insert for cutting high-temperature alloys according to claim 1, characterized in that: The draft angle of the elliptical protrusion (8) is 15°, which can increase the contact area between the tool and the cooling medium, reduce the tool temperature, and play a role in assisting chip breaking and chip guiding.
5. The indexable wear-reducing turning insert for cutting high-temperature alloys according to claim 1, characterized in that: The draft angle of the quasi-octagonal heat sink (10) is 15°, which can increase the heat dissipation area of the blade.