Double-sided fourteen-edge milling blade for rough machining
By designing a double-sided fourteen-flute milling insert, the problem of easy tool damage was solved, achieving efficient and low-cost roughing cutting results. It is suitable for rough milling of flat surfaces in materials such as titanium alloys, high-temperature alloys, stainless steel, steel, and cast iron.
Patent Information
- Application Number
- CN202422630355.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-30
AI Technical Summary
In rough machining of difficult-to-machine materials such as titanium alloys, high-temperature alloys, stainless steel, steel, and cast iron, the cutting tools are easily damaged due to the large radial and axial forces, resulting in high production costs and low efficiency.
A double-sided fourteen-flute milling insert for roughing has been designed. Each end of the insert has seven cutting edges that can cut sequentially. The cutting edge and rake face structure with specific shapes and angles enhance wear resistance and cutting efficiency.
It improves tool life and cutting efficiency, reduces production costs, and is suitable for rough milling of planes on various materials.
Smart Images
Figure CN223518714U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to milling tool technical field, especially relates to double -sided fourteen blade milling blade for rough machining. BACKGROUND
[0002] In rough machining production of titanium alloy, high temperature alloy, stainless steel, steel and cast iron and other difficult machining materials, the cutting allowance is generally in the range of 1-4mm, the radial and axial forces borne by the tool are relatively large during the cutting process, and the breakage rate of the blade is relatively high, so in production, in order to prolong the service life of the tool, the cutting production is generally carried out in the mode of reducing the machining efficiency, and the production cost is relatively high. SUMMARY
[0003] In view of the problems existing in the prior art, the utility model provides a double -sided fourteen blade milling blade for rough machining, seven cutting edges on each end of the blade can be sequentially rotated for cutting in one cutting, the wear of a single cutting edge is relatively small, the blade has high wear resistance, high cutting efficiency, long service life and low cutting production cost, and can be suitable for rough milling of various machining materials.
[0004] To solve the above technical problems, the utility model adopts a technical scheme as follows:
[0005] The double -sided fourteen blade milling blade for rough machining includes a blade main body, the blade main body is in the structure of a regular heptagon prism, the upper end and the lower end of the blade main body each include an end face in the shape of a regular heptagon and arranged horizontally and a skirt arranged at the periphery of the edge of the end face, seven positioning faces are formed on the side wall of the blade main body, the two positioning faces adjacent to each other are connected by arc surfaces, the intersection of each positioning face and the arc surface and a skirt is formed with a main cutting edge and a round corner tool tip respectively, a chip flow space is formed between each skirt and the end face, and a through mounting hole is arranged at the center of the blade main body.
[0006] As a further elaboration of the above technical scheme:
[0007] In the above technical scheme, each skirt extends obliquely towards the radial and axial outer sides of the blade main body, and from the outside to the inside, the skirt includes in sequence a blade edge flat, a first rake face, a second rake face, a chip flow face and a chip pocket bottom, the blade edge flat is connected with the positioning face and the arc surface, and the chip pocket bottom is connected with the end face; each blade edge flat is a flat surface arranged in parallel with the end face, the second rake face is an inclined surface, and the first rake face, the chip flow face and the chip pocket bottom are curved surfaces.
[0008] In the above technical scheme, the chip flow face is connected by two arc surfaces with different curvatures.
[0009] In the above technical solution, the width of the land is between 0.02mm and 0.04mm.
[0010] In the above technical solution, the width of the first rake face is between 0.1mm and 0.15mm, the height is between 7um and 25um, and the first rake angle between the first rake face and the horizontal plane is between 5.5° and 9.5°.
[0011] In the above technical solution, the second rake angle between the second rake face and the horizontal plane is between 12° and 19°.
[0012] In the above technical solution, the maximum distance between the flute bottom and the land is between 0.55mm and 0.8mm, and the third included angle between the flute bottom and the horizontal plane is between 21° and 35°.
[0013] In the above technical solution, the radius of each round nose is between 0.6mm and 1.4mm.
[0014] In the above technical solution, the included angle between two adjacent positioning faces is 128.57°.
[0015] Compared with the prior art, the beneficial effects of the utility model are that: seven cutting edges on each end portion of the utility model can be sequentially and alternately cut in one cutting, the wear of a single cutting edge is relatively small, the cutting blade has strong wear resistance, high cutting efficiency, long service life, low cutting production cost, and can be applied to rough milling of various machining materials. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a structural schematic diagram of an embodiment of the utility model;
[0017] Figure 2 is Figure 1 a structural enlarged schematic diagram of part A in the utility model;
[0018] Figure 3 is Figure 1 a top view structural schematic diagram of the utility model;
[0019] Figure 4 is Figure 3 a sectional view structural schematic diagram of E-E in the utility model;
[0020] Figure 5 is Figure 4 a structural enlarged schematic diagram of part B in the utility model;
[0021] Figure 6 is Figure 5 a structural enlarged schematic diagram of part C in the utility model;
[0022] Figure 7 is a structural schematic view of another embodiment of the utility model.
[0023] In the figure: #300, blade main body; #400, horizontal plane; 1, end surface; 3, skirt; 4, positioning surface; 5, arc curved surface; 6, main cutting edge; 7, round nose; 8, mounting hole groove; 9, chip flow space; 10, edge flat position; 11, first rake surface; 12, second rake surface; 13, chip flow-out surface; 14, chip-winding groove bottom; L1, the width of edge flat position; L2, the height of first rake surface; L3, the distance between chip-winding groove bottom and edge flat position; L4, the width of first rake surface; A1, first rake angle; A2, second rake angle; A3, third included angle; R, the radius of round nose. DETAILED DESCRIPTION
[0024] The utility model will be made further detailed explanation below combining with the drawings.
[0025] The embodiments described with reference to the drawings are exemplary and are intended to be illustrative of the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings and are used only for the purpose of facilitating the description of the present application and simplifying the description, and thus cannot be construed as indicating or implying that a device or element indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application. In addition, the terms "first", "second" are used only for the purpose of description and cannot be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated thereby. Thus, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several", "a plurality of" is two or more, unless otherwise explicitly specified and limited. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be interpreted broadly, for example, can be fixed connection, can be detachable connection, or integral connection; can be mechanical connection, can be electrical connection; can be direct connection, can be indirect connection through an intermediate medium, or can be communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature with respect to the second feature can include the first and second features directly contacting each other, or can include the first and second features not directly contacting each other but contacting each other through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature with respect to the second feature include the first feature above and obliquely above the second feature, or only indicate that the first feature is higher than the second feature in horizontal height. The "lower", "lower" and "lower" of the first feature with respect to the second feature include the first feature below and obliquely below the second feature, or only indicate that the first feature is lower than the second feature in horizontal height.
[0026] As Figures 1-3As shown in the drawings, the rough machining double-sided fourteen-blade milling insert comprises an insert body 300; the insert body 300 is in a regular heptagonal prism structure, the upper end and the lower end of the insert body 300 each comprises a regular heptagonal and horizontally arranged end face 1 and a skirt 3 connected to the outer periphery of the edge of the regular heptagonal prism, seven positioning faces 4 are formed on the side wall of the insert body 300, and the two adjacent positioning faces 4 are connected through an arc curved surface 5, the intersection of each positioning face 4 and the arc curved surface 5 and a skirt 3 forms a main cutting edge 6 and a round corner tool tip 7, respectively, and a chip flow space 9 is formed between each skirt 3 and the end face 1, and the mounting hole groove 8 is arranged at the center of the insert body 300, and the included angle between the two adjacent positioning faces 4 is 128.57°.
[0027] Further, as shown in the drawings, each skirt 3 extends obliquely towards the radial and axial outer side of the insert body 300, and from the outside to the inside, comprises a blade flat 10, a first rake face 11, a second rake face 12, a chip flow-out face 13 and a chip pocket bottom 14 which are connected smoothly in sequence, the blade flat 10 is connected with the positioning face 4 and the arc curved surface 5, and the chip pocket bottom 14 is connected with an end face 1. Figures 4-6 Further, the chip flow-out face 13 is connected smoothly by two arc surfaces with different curvatures.
[0028] In an embodiment of the utility model, the width L1 of the blade flat 10 is 0.03mm, the width L4 of the first rake face 11 is 0.13mm, the height L2 thereof is 0.01mm, the first rake angle A1 formed between the first rake face 11 and the horizontal plane 400 is 8.07°, the second rake angle A2 formed between the second rake face 12 and the horizontal plane 400 is 15.83°, the maximum distance L3 between the chip pocket bottom 14 and the blade flat 10 is 0.64mm, the third included angle A3 formed between the chip pocket bottom 14 and the horizontal plane 400 is 30.51°, and the radius R of each round corner tool tip 7 is 0.7mm.
[0029]
[0030] The blade in the above embodiment is suitable for application occasions with good working conditions. During cutting, fourteen cutting edges are formed on the heptagonal double-sided blade body 300, and with the rotation of the blade, the main cutting edge 6 and the rounded nose 7 on a group of cutting edges collide with the workpiece in turn and bear the cutting reaction force, at this time, the edge flat position 10 can better strengthen the strength of the main cutting edge 1, avoid or slow down the damage of the blade body 300, and then the first rake face 11 cuts into the workpiece, the chip is separated from the workpiece and flows along the first rake face 11 to the second rake face 12 and the chip flow-out face 13 and flows into the chip pocket bottom 14, in the process, the chip will produce undulating deformation and friction along the shape of the first rake face 11, the second rake face 12 and the chip flow-out face 13, and after entering the chip pocket bottom 14, the chip will produce large curling and deformation under the influence of the circular arc radius, and flow to the workpiece direction, with the increase of the cutting curling number and the rotation of the tool, the main cutting edge 6 and the rounded nose 7 of a group of cutting edges gradually separate from the workpiece, the chip pressure is gradually released, the chip is broken and flies away from the blade, and the cutting and chip breaking process is completed; at the same time, the next group of cutting edges enters the cutting action. It has been verified that the maximum cutting depth can reach 4.8mm under good working conditions, which can fully meet the cutting allowance requirement of 1-4mm in conventional rough machining production, and the seven cutting edges on one end can sequentially and alternately cut in one cutting, the wear of a single cutting edge is relatively small, the cutting efficiency is high, the service life of the blade is long, and the production cost is low.
[0031] As shown in the drawings, Figure 7 In another embodiment of the utility model, when the working condition is poor or the universality is pursued, the size parameters of each cutting edge on the blade body 300 are properly adjusted: the radius R of the rounded nose 7 is increased to 1.2mm; the width L1 of the edge flat position 10 remains unchanged at 0.03mm; the width L4 of the first rake face 11 remains unchanged at 0.13mm, the height L2 is increased to 0.02mm, and the first rake angle A1 is reduced to 6.5°; the second rake angle A2 is reduced to 13.00; the included angle A3 between the chip flow-out face 13 and the horizontal plane 400 is reduced to 23.00°; and the height L3 from the chip pocket bottom 14 to the horizontal plane 400 is reduced to 0.63mm.
[0032] In order to facilitate operation, the utility model is marked on each cutting edge on the side of each rounded nose 7 on each end surface 1, so that the operator can quickly and accurately identify each cutting edge and install and produce according to the actual situation.
[0033] The utility model has strong universality, is suitable for rough milling and planar machining of various machining materials, has high efficiency, high wear resistance of the cutting edge and long service life of the blade.
[0034] The above is not any limit to the technical range of the utility model, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model still belong to the range of the technical scheme of the utility model.
Claims
1. A double-sided fourteen-flute roughing milling insert comprising an insert body; characterized in that: The blade body is a regular heptagonal prism structure, the upper end and the lower end of which each include a regular heptagonal and horizontally arranged end face and a skirt connected to the outer periphery of the edge, seven positioning faces are formed on the side wall, two adjacent positioning faces are connected by arc curved surfaces, the intersection of each positioning face and arc curved surface and a skirt forms a main cutting edge and a round corner tool tip, a chip flow space is formed between each skirt and end face, and a through mounting hole is arranged at the center of the blade body.
2. The roughing two-sided fourteen-blade milling insert according to claim 1, characterized in that, Each skirt extends obliquely towards the radial and axial outside of the blade body and includes a smooth interface of a blade edge flat, a first rake face, a second rake face, a chip flow face and a chip curl groove bottom from outside to inside, the blade edge flat is connected to the positioning face and the arc curved surface, and the chip curl groove bottom is connected to the end face; each blade edge flat is a flat surface parallel to the end face, the second rake face is an inclined surface, and the first rake face, the chip flow face and the chip curl groove bottom are curved surfaces.
3. The roughing two-sided fourteen-blade milling insert according to claim 2, characterized in that, The chip flow face is connected by two arc surfaces with different curvatures.
4. The roughing two-sided fourteen-blade milling insert according to claim 2, characterized in that, The width of the blade edge flat is between 0.02mm and 0.04mm.
5. The roughing two-sided fourteen-blade milling insert according to claim 2, characterized in that, The width of the first rake face is between 0.1mm and 0.15mm, the height is between 7um and 25um, and the first rake angle between the first rake face and the horizontal plane is between 5.5° and 9.5°.
6. The roughing two-sided fourteen-blade milling insert according to claim 2, characterized in that, The second rake angle between the second rake face and the horizontal plane is between 12° and 19°.
7. The roughing two-sided fourteen-blade milling insert according to claim 2, characterized in that, The maximum distance between the chip curl groove bottom and the blade edge flat is between 0.55mm and 0.8mm, and the third included angle between the chip curl groove bottom and the horizontal plane is between 21° and 35°.
8. The roughing two-sided fourteen-fluted milling insert according to any one of claims 1 - 7, characterized in that The radius of each round corner tool tip is between 0.6mm and 1.4mm.
9. The roughing two-sided fourteen-blade milling insert according to claim 8, characterized in that, The included angle between two adjacent positioning faces is 128.57°.