Heavy-load turning blade
By improving the cutting edge structure and chip breaking design of heavy-duty turning inserts, the problems of poor performance and short service life of heavy-duty turning inserts have been solved, achieving efficient machining and cooling effects under extreme heavy-duty cutting conditions.
Patent Information
- Application Number
- CN202520081295.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-01-14
AI Technical Summary
Existing heavy-duty turning inserts have poor performance, low retention capacity, short service life, and uneven machining allowance and complex surface condition under extreme heavy-duty cutting conditions, resulting in defects.
A heavy-duty turning insert was designed with an improved cutting edge structure, including a chip-breaking structure composed of a cutting edge band, a rake face, a wavy chip guide slope, and an arc-shaped protrusion. This enhances the strength of the cutting edge and guides the chip flow through the cutting guide recess, assisting in chip breaking and improving the cooling effect of the coolant.
Under heavy-duty cutting conditions, the cutting edge strength of the insert is enhanced, the chip flow is effectively guided, the cooling effect is improved, the service life of the insert is extended, and the machining requirements of heavy-duty cutting are met.
Smart Images
Figure CN223946823U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to turning blade technical field, concretely is a kind of heavy-duty turning blade. BACKGROUND
[0002] Heavy-duty cutting is a kind of efficient machining technology for large, heavy workpiece, it has significant advantages in improving production efficiency, reducing cost and coping with difficult-to-machine materials, heavy-duty cutting technology has wide application in aerospace, automobile, steam turbine and engine and other major equipment manufacturing fields.
[0003] The existing heavy-duty turning blade, performance is poor and holding capacity is low, the machining allowance of heavy-duty cutting workpiece is usually very large, and uneven, the surface state of blank is also more complex, there can be large crack, hardening skin, sand inclusion, blowhole and repair point and other defect conditions, in the face of these uneven machining allowance and complex surface state, the service life of blade is lower under extreme heavy-duty cutting condition. UTILITY MODEL CONTENTS
[0004] In view of the deficiency of prior art, the utility model provides a heavy-duty turning blade, solve the existing heavy-duty turning blade, performance is poor and holding capacity is low, the service life of blade is lower under extreme heavy-duty cutting condition.
[0005] To achieve the above object, the utility model realizes through the following technical scheme: a heavy-duty turning blade, including the blade body that is provided with installation section, the edge of the top of blade body is provided with cutting edge, the top of blade body is provided with cutting guide recess between installation section and cutting edge, cutting guide recess is provided with chip breaking structure inside;
[0006] The chip breaking structure includes four chip breaking parts, wave-shaped chip guide slope, chip breaking table pattern and a plurality of arc convex, the wave-shaped chip guide slope is opened in the top of the blade body, four chip breaking parts are distributed in the four corners of the top of the blade body, a plurality of arc convexes are all arranged in the inside of wave-shaped chip guide slope, and are evenly spaced and arranged along the inside of wave-shaped chip guide slope, the chip breaking table pattern is arranged on the surface of installation section.
[0007] Further, the cutting edge is composed of blade belt and rake face, the blade belt is fixedly connected at the edge of the blade body, and the rake face is arranged on the inside of the blade belt and inclined downward.
[0008] Further, the width of the blade belt is 0.1-0.3mm, the included angle between the blade belt and the top plane of the blade body is 10-15 °, and the included angle between the rake face and the top plane of the blade body is 15-25 °.
[0009] Further, the arc convexes on each side are at least four, and the chip breaking part is formed by the mountain-shaped convexes extending along the diagonal lines of the top surface of the blade body to the circular arc surface of the cutting edge.
[0010] Further, the cutting edge is provided with a chamfer, the included angle of the chamfer is 17-25°, and the width is 0.22-0.3mm.
[0011] Further, the top of the blade body is provided with a flat edge connected with the chamfer, the width of the flat edge tip part is 0.33-0.38mm, and the top of the blade body is provided with a chip curling groove connected with the flat edge, and the included angle between the chip curling groove and the top surface of the blade body is 17-22°.
[0012] Further, the chip breaking table patterns are symmetrically arranged along the bisector of the blade tip angle of the blade body, and the included angle between the chip breaking table patterns and the flat edge is 6-9°.
[0013] Compared with the prior art, the beneficial effects of the utility model are that, by improving the cutting edge structure and the chip guiding recess, the blade edge structure ensures the edge strength when the blade is used for heavy load cutting, the cutting guiding recess can guide the chip flow direction, auxiliary machining chip breaking, meets the machining requirements of heavy load cutting, the plurality of arc convexes in the wave-shaped chip guiding slope of the blade are arranged at intervals along the length direction, the cooling liquid flows from the blade to the wave-shaped chip guiding slope during the cutting process, and then flows out along the wave-shaped chip guiding slope, the direction of the arc convex structure effectively hinders the cooling liquid from flowing out, so that the cooling liquid is more likely to stay in the cutting position, and better cooling effect is obtained. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 It is a three-dimensional structure schematic view of the utility model;
[0015] Fig. 2 It is a top view structure schematic view of the utility model;
[0016] Fig. 3 It is a structure schematic view of the blade body and the flat edge in the utility model.
[0017] In the drawing: 1, blade body; 2, mounting section; 3, chamfer; 4, cutting edge; 5, cutting guiding recess; 6, rake face; 7, edge band; 8, chip breaking part; 9, wave-shaped chip guiding slope; 10, arc convex; 11, flat edge; 12, chip curling groove; 13, chip breaking table pattern. DETAILED DESCRIPTION
[0018] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.
[0019] Please refer to Figs. 1-3 The utility model provides a kind of heavy turning blade, including the blade body 1 of installation section 2, the edge of the top of blade body 1 is provided with cutting edge 4, and the top surface of blade body 1 is divided into two parts along diagonal line.
[0020] The top of blade body 1 is provided with cutting guide recess 5 between installation section 2 and cutting edge 4, and chip breaking structure is arranged in cutting guide recess 5.
[0021] Chip breaking structure includes four chip breaking parts 8, wave-shaped chip guide slope 9, chip breaking platform pattern 13 and a plurality of arc convex 10, wave-shaped chip guide slope 9 is arranged on the top of blade body 1, four chip breaking parts 8 are distributed at four corners of the top of blade body 1, and chip breaking platform pattern 13 is arranged on the surface of installation section 2.
[0022] Blade body 1 is arranged in diamond shape, the included angle of convex chip breaking part 8 is at the arc cutting edge 4 of acute angle, and blade body 1 is arranged in symmetric body, including but not limited to diamond, triangle and the like.
[0023] A plurality of arc convex 10 are arranged in the inside of wave-shaped chip guide slope 9, and are uniformly and spacedly arranged along the inside of wave-shaped chip guide slope 9.
[0024] Cutting edge 4 is composed of edge band 7 and rake face 6, edge band 7 is fixedly connected to the edge of blade body 1, and rake face 6 is arranged on the inner side of edge band 7 and is downwardly inclined.
[0025] The width of edge band 7 is 0.1-0.3mm, the included angle between edge band 7 and the top plane of blade body 1 is 10-15 °, and the width and the smaller angle of edge band 7 can strengthen the edge strength.
[0026] The included angle between rake face 6 and the top plane of blade body 1 is 15-25 °, and the angle of rake face 6 increases the sharpness of the width of edge band 7 when feeding during cutting.
[0027] Each side arc convex 10 is at least four, and chip breaking part 8 is formed by mountain-shaped convex extending along the diagonal line of the top surface of blade body 1 towards the arc surface of cutting edge 4.
[0028] The arc convex 10 is arranged at intervals along the length direction of the arc convex 10, and the cooling liquid flows from the cutting edge to the wave-shaped chip guide slope 9 during the cutting process, and then flows out of the wave-shaped chip guide slope 9. The direction of the convex structure effectively hinders the outflow of the cooling liquid, so that the cooling liquid is more likely to stay in the cutting position, and a better cooling effect is generated.
[0029] The mountain-shaped convex extending towards the arc surface of the diagonal line of the top surface of the blade towards the circular arc cutting edge is a chip breaking part 8. During the cutting process, the chip flows to the chip breaking part 8 and curls, and when the maximum strain value of the chip exceeds the limit strain value of the chip, the chip breaks and the chip breaking is completed.
[0030] The cutting edge 4 is provided with a chamfer 3, the included angle of the chamfer 3 is 17-25°, and the width is 0.22-0.3mm.
[0031] The chamfer 3 can withstand the larger cutting force during heavy load machining, and ensure the strength of the blade edge.
[0032] The top of the blade body 1 is provided with a flat blade 11 connected with the chamfer 3, the width of the flat blade 11 at the tip is 0.33-0.38mm, and the top of the blade body 1 is provided with a chip curling groove 12 connected with the flat blade 11, and the included angle between the chip curling groove 12 and the top plane of the blade body 1 is 17-22°.
[0033] The flat transition section of the cutting guide concave part 5 and the flat blade 11 connects the chamfer 3 and the wave-shaped chip guide slope 12, and the flat transition section is connected with the flat blade 11. The chip curling groove 12 can effectively reduce the cutting force when the cutting depth is large.
[0034] The chip breaking platform pattern 13 is symmetrically arranged along the bisector of the blade tip angle of the blade body 1, and the included angle between the chip breaking platform pattern 13 and the flat blade 11 is 6-9°.
[0035] The chip breaking platform pattern 13 rubs with the chip during cutting, guides the chip flow, reduces the chip curling radius, widens the groove chip breaking capacity, and at the same time, the chip breaking platform pattern 13 has a height difference and an angle difference with the chip curling groove 12. When guiding the chip flow, the chip does not completely adhere to the rake face 6, which is beneficial to the full contact of air with the rake face 6 and the chip to take away the cutting heat.
[0036] During working, the several arc convexes 10 are arranged in the wave-shaped chip guide slope 9, the arc convexes 10 are arranged in the length direction, the cooling liquid flows from the cutting edge to the wave-shaped chip guide slope 9, and then flows out from the wave-shaped chip guide slope 9, the direction of the convex structure effectively hinders the cooling liquid to flow out, so that the cooling liquid is more easily to stay in the cutting position, and better cooling effect is produced, the diagonal line of the top surface of the blade extends to the mountain convex of the arc surface of the arc cutting edge, the mountain convex is the chip breaking part 8, during cutting, the chip flows to the chip breaking part 8 and is curled, when the maximum strain value of the chip exceeds the limit strain value of the chip, the chip is broken, and the chip breaking is completed.
[0037] It is to be noted that the relative terms such as first and second and the like are used herein solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0038] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A heavy duty turning insert comprising an insert body (1) provided with a mounting section (2), characterized in that: The edge of the top of the blade body (1) is provided with a cutting edge (4), the top of the blade body (1) is provided with a cutting guide recess (5) between the mounting section (2) and the cutting edge (4), and the cutting guide recess (5) is internally provided with a chip breaking structure. The chip breaking structure comprises four chip breaking portions (8), a wave-shaped chip guide slope (9), a chip breaking table pattern (13) and a plurality of arc convexes (10), the wave-shaped chip guide slope (9) is arranged on the top of the blade body (1), the four chip breaking portions (8) are arranged at the four corners of the top of the blade body (1), the plurality of arc convexes (10) are arranged in the wave-shaped chip guide slope (9) and are uniformly and spacedly arranged in the wave-shaped chip guide slope (9), and the chip breaking table pattern (13) is arranged on the surface of the mounting section (2). The cutting edge (4) is provided with a chamfer (3), the included angle of the chamfer (3) is 17-25°, and the width is 0.22-0.3 mm. The top of the blade body (1) is provided with a flat edge (11) connected with the chamfer (3), the width of the flat edge (11) at the tip is 0.33-0.38 mm, the top of the blade body (1) is provided with a chip curling groove (12) connected with the flat edge (11), and the included angle between the chip curling groove (12) and the top plane of the blade body (1) is 17-22°. The chip breaking table pattern (13) is symmetrically arranged along the bisector of the tip angle of the blade body (1), and the included angle between the chip breaking table pattern (13) and the flat edge (11) is 6-9°.
2. A heavy turning insert according to claim 1, characterized in that: The cutting edge (4) is composed of an edge band (7) and a rake face (6), the edge band (7) is fixedly connected to the edge of the blade body (1), and the rake face (6) is arranged on the inner side of the edge band (7) and downwardly inclined.
3. A heavy turning insert according to claim 2, characterized in that: The width of the edge band (7) is 0.1-0.3 mm, the included angle between the edge band (7) and the top plane of the blade body (1) is 10-15°, and the included angle between the rake face (6) and the top plane of the blade body (1) is 15-25°.
4. The heavy turning insert according to claim 1, characterized in that: There are at least four arc convexes (10) on each side, and the chip breaking portion (8) is formed by a mountain-shaped convex extending along the diagonal line of the top surface of the blade body (1) to the circular arc surface of the cutting edge (4).