CN118808693B - Cutting insert and cutting tool - Google Patents
Cutting insert and cutting tool Download PDFInfo
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- CN118808693B CN118808693B CN202411308438.6A CN202411308438A CN118808693B CN 118808693 B CN118808693 B CN 118808693B CN 202411308438 A CN202411308438 A CN 202411308438A CN 118808693 B CN118808693 B CN 118808693B
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- cutting
- cutting edge
- mounting end
- insert
- edge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
- B23B27/1644—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped by a clamping member acting almost perpendicularly on the chip-forming plane and at the same time upon the wall of a hole in the cutting insert
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- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention discloses a cutting blade and a cutting tool, and relates to the field of cutting blades, wherein the cutting blade comprises a cutting part and a blade body, the blade body is provided with two mounting end faces which are opposite along a first direction and are arranged at intervals, the blade body is also provided with a connecting side face, the connecting side face is positioned between the two mounting end faces, the connecting side face is connected with the two mounting end faces, at least one mounting end face is provided with the cutting part, the cutting part is positioned at the edge position of the blade body, the connecting side face comprises two first side faces and two second side faces, the maximum interval distance between the two first side faces is L1, the maximum interval distance between the two second side faces is L2, and the relation that L2 is less than or equal to L1 is less than or equal to 2L2 is satisfied. According to the cutting blade provided by the embodiment of the invention, the stability of the cutting blade and the cutting tool can be improved, the cutting force acting on the cutting part can be reduced, the surface roughness of a workpiece to be processed is improved, and the service life of the cutting blade is prolonged.
Description
Technical Field
The invention relates to the field of cutting blades, in particular to a cutting blade and a cutting tool with the same.
Background
In the related art, in the high-feed cutting process, a cutting force acting on the spindle direction of a cutting tool is generated in the cutting process, and the larger the feeding amount of the cutting tool is, the larger the cutting force is received by the cutting edge of the cutting blade, so that the cutting tool generates high-frequency vibration, and the service life of the cutting tool and the surface roughness of a workpiece to be processed are reduced.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a cutting insert capable of improving stability of the cutting insert and the cutting tool, reducing the magnitude of cutting force acting on a cutting portion, improving surface roughness of a workpiece to be machined, and improving life of the cutting insert.
The invention further provides a cutting tool using the cutting insert.
The cutting insert comprises a cutting part and an insert body, wherein the insert body is provided with two mounting end faces which are opposite to each other along a first direction and are arranged at intervals, the insert body is further provided with a connecting side face, the connecting side face is positioned between the two mounting end faces and is connected with the two mounting end faces, at least one mounting end face is provided with the cutting part, the cutting part is positioned at the edge position of the insert body, the connecting side face comprises two first side faces and two second side faces, the two first side faces are opposite to each other along a second direction and are spaced apart, the two second side faces are opposite to each other along a third direction and are spaced apart, the maximum spacing distance between the two first side faces is L1, the maximum spacing distance between the two second side faces is L2, and the relation that L2 is less than or equal to L1 and less than or equal to 2L2 is satisfied, and the first direction, the second direction and the third direction are perpendicular to each other.
According to the cutting blade provided by the embodiment of the invention, the cutting blade can better realize high-feed processing, the stability of the cutting blade and the cutting tool can be improved, the cutting blade can be stably arranged on the cutting tool, the cutting force acting on the cutting part can be reduced, the surface roughness of a processed workpiece is improved, and the service life of the cutting blade is prolonged.
According to some embodiments of the invention, in the first direction, the maximum distance between the end of the cutting part facing away from the corresponding mounting end surface and the corresponding mounting end surface is H1, the cutting part is positioned at the edge position of the blade body, the cutting part intersects with the corresponding first side surface, the end of the cutting part facing away from the corresponding mounting end surface is provided with a cutting edge, the cutting edge extends along the edge of the corresponding first side surface, the blade body is provided with a center plane, the center plane is perpendicular to the third direction, the center of the blade body is positioned in the center plane, and the distance between the intersection point of the center plane and the cutting edge and the corresponding mounting end surface is H2, so that the relation H2< H1 is satisfied.
According to some embodiments of the invention 1.5H2.ltoreq.H2.ltoreq. 2.5H2.
According to some embodiments of the invention, the cutting edge comprises a first corner cutting edge, a main cutting edge, a second corner cutting edge, a minor cutting edge, and a third corner cutting edge connected in sequence, the second corner cutting edge being arcuate.
According to some embodiments of the invention, the second corner cutting edge is rounded.
According to some embodiments of the invention, the central plane intersects the second corner cutting edge, and along the third direction, the distance between the intersection of the central plane with the second corner cutting edge and the main cutting edge is D1, and the width of the main cutting edge is D2, satisfying the relation D2< D1.
According to some embodiments of the invention, the relation 0.5 mm.ltoreq.D1.ltoreq.5 mm is satisfied.
According to some embodiments of the invention, the blade body has a central axis extending in the first direction, the distance between the central axis of the blade body and a line tangent to the first angular cutting edge is L3, and the distance between the central axis of the blade body and a line tangent to the second angular cutting edge is L4, 0.8L 3/L4 1.2.
According to some embodiments of the invention, each of the mounting end surfaces is provided with a plurality of the cutting portions, the plurality of cutting portions on the same mounting end surface being symmetrical about a central axis of the insert body.
According to some embodiments of the invention, the connection side is perpendicular to both of the mounting end faces.
According to a second aspect of the present invention, a cutting tool includes a tool body and the cutting insert described in the foregoing embodiments, where the cutting insert is fixedly disposed on the tool body.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of a cutting insert according to an embodiment of the present invention;
FIG. 2 is a top view of a cutting insert according to an embodiment of the present application;
FIG. 3 is a side view of a cutting insert according to an embodiment of the present application;
FIG. 4 is a schematic view of a cutter body according to an embodiment of the present application;
Fig. 5 is a schematic view of a cutting tool according to an embodiment of the present application.
Reference numerals:
The cutting tool 100 is intended to be used in a cutting tool,
The cutting insert 1 is intended to be mounted,
A cutting portion 10, a cutting edge 11, a first corner cutting edge 111, a main cutting edge 112, a second corner cutting edge 113, a minor cutting edge 114, a third corner cutting edge 115,
The insert body 12, the mounting end surface 121, the connecting side surface 122, the first side surface 1221, the second side surface 1222, the junk slots 123, the first mounting hole 124,
The central plane 13 is provided with a central plane,
The cutter body 2, the cutter blade seat 21, the bottom placing surface 22, the first mounting hole 221, the main side placing surface 23 and the secondary side placing surface 24.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
A cutting insert 1 according to an embodiment of the present invention is described below with reference to fig. 1 to 5, the cutting insert 1 being mounted on a cutting tool 100.
The cutting insert 1 according to the embodiment of the first aspect of the present invention, as shown in fig. 1 and 2, may include a cutting portion 10 and an insert body 12, the insert body 12 having two mounting end surfaces 121 disposed opposite and spaced apart in a first direction, the insert body 12 further having a connecting side surface 122, the connecting side surface 122 being located between the two mounting end surfaces 121, and the connecting side surface 122 being connected to both the mounting end surfaces 121, at least one of the mounting end surfaces 121 being provided with the cutting portion 10, the cutting portion 10 being located at an edge position of the insert body 12, wherein the connecting side surface 122 includes two first side surfaces 1221 and two second side surfaces 1222, the two first side surfaces 1222 being opposite and spaced apart in a second direction, the two second side surfaces 1222 being opposite and spaced apart in a third direction, a maximum spacing distance between the two first side surfaces 1221 being L1, and a maximum spacing distance between the two second side surfaces 1222 being L2, satisfying the relation L2L 1-2, the first direction, the second direction and the third direction 1222 being perpendicular to each other.
In the related art, in the high-feed cutting process, a cutting force acting in the direction of the main axis of the cutting tool is generated, and the larger the feeding amount of the cutting tool is, the larger the cutting force is applied to the cutting edge of the cutting insert, so that the cutting tool is vibrated at a high frequency, and the service life of the cutting tool and the surface roughness of the workpiece to be processed are reduced.
Based on this, an embodiment of the present application proposes a cutting insert 1, where the cutting insert 1 may include a cutting portion 10 and an insert body 12, the cutting portion 10 may cut a workpiece during cutting, the cutting portion 10 is disposed on the insert body 12, the insert body 12 has two mounting end surfaces 121 disposed opposite to and at intervals along a first direction, and when the insert body 12 is disposed in the direction of fig. 1, the first direction may be a Z direction in fig. 1, and the insert body 12 may implement positioning and mounting of the cutting insert 1 through the mounting end surfaces 121. The blade body 12 further has a connecting side 122, the connecting side 122 is located between the two mounting end surfaces 121, and the connecting side 122 is connected between the two mounting end surfaces 121, the connecting side 122 may be integrally formed with the two mounting end surfaces 121, at least one mounting end surface 121 is provided with the cutting portion 10, one of the two mounting end surfaces 121 may be provided with the cutting portion 10, and both mounting end surfaces 121 may also be provided with the cutting portion 10. As an example, two mounting end surfaces 121 are each provided with a cutting portion 10, and each mounting end surface 121 is provided with two cutting portions 10 opposed to and spaced apart in the second direction. The cutting portion 10 is located at the edge of the blade main body 12, so that the cutting portion 10 can act on a workpiece, cutting efficiency of the cutting blade 1 is improved, the cutting portion 10 is arranged on the two mounting end faces 121, double-sided cutting of the cutting blade 1 can be achieved, and practicability of the cutting blade 1 is improved.
Wherein the connecting side 122 comprises two first sides 1221 and two second sides 1222, the two first sides 1221 being opposite and spaced apart along a second direction, which may be the X-direction in fig. 1 when the blade body 12 is disposed as in the fig. 1 direction. The two second sides 1222 are opposite and spaced apart along a third direction, which may be the Y-direction in fig. 1 when the blade body 12 is disposed as in the fig. 1 orientation. The first direction, the second direction and the third direction are perpendicular to each other. As shown in fig. 2, the maximum distance between the two first sides 1221 is equal to or greater than the maximum distance between the two second sides 1222, the maximum distance between the two first sides 1221 is L1, the maximum distance between the two second sides 1222 is L2, for example, the maximum distance between the two first sides 1221 may be L2, 1.3L2, 1.8L2, 2L2, or the like, and the maximum distance between the two first sides 1221 may be between L2 and 2L2, and any value including the end point value may be the maximum distance between the two first sides 1221 that is optional in the present invention.
If the maximum distance between the two first sides 1221 is smaller than L2, the supporting area of the cutting tool 100 on the cutting insert 1 is reduced, the supporting effect of the cutting tool 100 on the cutting insert 1 is affected, the stability of the cutting insert 1 mounted on the cutting tool 100 is affected, and the stability of the cutting insert 1 during cutting is further affected, and if the maximum distance between the two first sides 1221 is larger than 2L2, the cutting force applied to the cutting portion 10 during cutting is large, the cutting tool 100 is unstable, and the surface roughness of the workpiece is affected. Therefore, the maximum distance between the two first sides 1221 is in the range of L2 to 2L2, and the cutting tool 100 can achieve a stable supporting effect on the cutting insert 1, so that the cutting insert 1 can be stably mounted on the cutting tool 100, the cutting force acting on the cutting portion 10 can be reduced, the stability of the cutting insert 1 and the cutting tool 100 can be improved, the surface of the workpiece to be processed can achieve better surface roughness, and the service life of the cutting insert 1 can be prolonged. Further, the minimum distance between the two first sides 1221 may be greater than or equal to the minimum distance between the two second sides 1222, resulting in a more secure mounting of the cutting insert 1 to the cutting tool 100.
In the embodiment of the invention, the cutting insert 1 can better realize high-feed processing, the stability of the cutting insert 1 and the cutting tool 100 can be improved, the cutting insert 1 can be stably mounted on the cutting tool 100, the cutting force acting on the cutting part 10 can be reduced, the surface roughness of a workpiece to be processed can be improved, and the service life of the cutting insert 1 can be prolonged.
In some embodiments of the present invention, as shown in fig. 1 and 3, in the first direction, the maximum distance between the end of the cutting portion 10 facing away from the corresponding mounting end surface 121 and the corresponding mounting end surface 121 is H1, the cutting portion 10 is located at the edge position of the blade body 12, the cutting portion 10 intersects the corresponding first side surface 1221, the end of the cutting portion 10 facing away from the corresponding mounting end surface 121 is formed with the cutting edge 11, the cutting edge 11 extends along the edge of the corresponding first side surface 1221, the blade body 12 has a center plane 13, the center plane 13 is perpendicular to the third direction, the center of the blade body 12 is located at the center plane 13, and the distance between the intersection of the center plane 13 and the cutting edge 11 and the corresponding mounting end surface 121 is H2, satisfying the relation H2< H1.
Along the first direction, the maximum interval distance between the end part of the cutting part 10, which is away from the corresponding mounting end surface 121, and the corresponding mounting end surface 121 is H1, the cutting part 10 protrudes towards the outer side of the blade body 12 relative to the corresponding mounting end surface 121, the cutting part 10 is positioned at the edge part of the blade body 12, the cutting parts 10 are arranged on the two mounting end surfaces 121, the cutting parts 10 are intersected with the first side surface 1221, the cutting edge 11 is formed by the intersection of the end part of the cutting part 10, which is away from the corresponding mounting end surface 121, and the first side surface 1221, and the cutting edge 11 extends along the edge of the corresponding first side surface 1221. The insert body 12 has a center plane 13, the center plane 13 being perpendicular to the third direction, the center plane 13 being parallel to the second direction, the center plane 13 being located between the two second side surfaces 1222, the center plane 13 being spaced apart from the two second side surfaces 1222 by equal distances, the center of the insert body 12 being located on the center plane 13, the intersection of the center plane 13 with the cutting edge 11 being spaced apart from the corresponding mounting end surface 121 by a distance H2 smaller than the maximum spacing distance H1 between the end of the cutting portion 10 facing away from the corresponding mounting end surface 121 and the corresponding mounting end surface 121, the cutting edge 11 being extendable from the end point of the spacing distance H1 from the corresponding mounting end surface 121 in the third direction to both sides, the spacing distance between the cutting edge 11 and the corresponding second side surface 1222 being gradually decreased as the cutting edge 11 is gradually extended to the second side surface 1222. By setting the distance H2 from the intersection point of the center plane 13 and the cutting edge 11 to the corresponding mounting end surface 121 smaller than the maximum distance H1 between the end of the cutting portion 10 facing away from the corresponding mounting end surface 121 and the corresponding mounting end surface 121, the strength of the cutting insert 1 can be maintained, and the cutting insert 1 can achieve a good chip removing effect, so that the cutting insert 1 has good chip removing performance.
In some embodiments of the invention 1.5H2.ltoreq.H2.ltoreq. 2.5H2.
Further, the maximum distance between the end of the cutting portion 10 facing away from the corresponding mounting end surface 121 and the corresponding mounting end surface 121 may be 1.5H2, 1.8H2, 2H2, 2.5H2, etc., and the maximum distance between the end of the cutting portion 10 facing away from the corresponding mounting end surface 121 and the corresponding mounting end surface 121 may be 1.5H2 to 2.5H2, where any value including the end point value is the maximum distance between the end of the cutting portion 10 facing away from the corresponding mounting end surface 121 and the corresponding mounting end surface 121. If the maximum distance between the end of the cutting portion 10 facing away from the corresponding mounting end surface 121 and the corresponding mounting end surface 121 is less than 1.5H2, the cutting edge 11 may not be sharp enough, so as to increase the cutting force acting on the cutting edge 11, and affect the machining effect of the cutting insert 1, and if the maximum distance between the end of the cutting portion 10 facing away from the corresponding mounting end surface 121 and the corresponding mounting end surface 121 is greater than 2.5H2, the cutting edge 11 may be too sharp, and when the cutting force is applied to the cutting edge 11, local stress concentration may easily occur, resulting in chipping or breakage of the cutting edge 11, and affecting the service life of the cutting insert 1. Therefore, the maximum distance between the end of the cutting portion 10 facing away from the corresponding mounting end surface 121 and the corresponding mounting end surface 121 is in the range of 1.5H2 to 2.5H2, which can reduce the cutting force acting on the cutting edge 11, can prolong the service life of the cutting insert 1, and can achieve the effect of dispersing chip removal toward the left and right sides where the cutting edge 11 contacts the workpiece to be machined when removing chips, guide the chip flow direction, and a part of chips can flow to the chip removal groove 123 side through the cutting edge 11, and another part of chips can flow to the surface to be machined side of the workpiece, thereby achieving a good chip removal effect.
In some embodiments of the present invention, the cutting edge 11 includes a first corner cutting edge 111, a main cutting edge 112, a second corner cutting edge 113, a minor cutting edge 114, and a third corner cutting edge 115, which are sequentially connected, and the second corner cutting edge 113 is arc-shaped.
The cutting edge 11 extends along the edge of the corresponding first side 1221 in the third direction, the cutting edge 11 includes the first corner cutting edge 111, the main cutting edge 112, the second corner cutting edge 113, the minor cutting edge 114 and the third corner cutting edge 115 which are sequentially connected, the end point of the cutting edge 11 with the distance H1 from the corresponding mounting end surface 121 is located at the main cutting edge 112, and when the workpiece is processed with high feed, the first corner cutting edge 111, the main cutting edge 112, the second corner cutting edge 113, the minor cutting edge 114 and the third corner cutting edge 115 on the cutting edge 11 do not contact with the workpiece at the same time, and the end point of the cutting edge 11 with the distance H1 from the corresponding mounting end surface 121 is located at the main cutting edge 112, so that the effect of weakening the cutting force acting on the cutting edge 11 can be achieved. One end of the first corner cutting edge 111 is connected with the main cutting edge 112, the other end of the first corner cutting edge 111 is connected with one of the second side surfaces 1222, the first corner cutting edge 111 can assist the main cutting edge 112 to complete the cutting process under the condition of complex shape machining or additional cutting force, and the first corner cutting edge 111 can improve the stability of the cutting process and reduce the vibration of the cutting insert 1 caused by uneven cutting force distribution. The chip grooves 123 are formed in both the second sides 1222 of the insert body 12, and the chip grooves 123 in the second sides 1222 connected to the first corner cutting edge 111 are disposed in correspondence with the first corner cutting edge 111 so that chips generated at the first corner cutting edge 111 can be discharged from the chip grooves 123. The main cutting edge 112 directly contacts with the workpiece, the material is removed through shearing action, the shape and the size of the workpiece are required, the shape and the angle of the main cutting edge 112 have direct influence on the size and the distribution of cutting force, and the proper design of the cutting edge 11 can reduce the cutting force and improve the processing efficiency.
The second corner cutting edge 113 is disposed at one end of the main cutting edge 112 away from the first corner cutting edge 111, the second corner cutting edge 113 is connected with the main cutting edge 112, the second corner cutting edge 113 can function as an auxiliary main cutting edge 112, and the second corner cutting edge 113 shares the cutting load of the main cutting edge 112, thereby helping to slow down the abrasion of the main cutting edge 112. The second corner cutting edge 113 may be configured in an arc shape to facilitate reducing stress concentration points of the cutting edge 11, reducing the risk of breakage or chipping of the cutting insert 1, and to facilitate extending the overall life of the cutting insert 1. The second corner cutting edge 113, being configured in an arc shape, may also help to form more regular chips, reducing damage to the workpiece or the cutting insert 1 from the chips. The secondary cutting edge 114 is connected with the second corner cutting edge 113, the secondary cutting edge 114 has good continuity and smoothness, and the secondary cutting edge 114 can reduce vibration in the cutting process and improve the processing stability. One end of the third angle cutting edge 115 is connected with the minor cutting edge 114, the other end of the third angle cutting edge 115 is connected with the other second side 1222, at least part of the third angle cutting edge 115 is positioned on the mounting end surface 121, the effect that the cutting edge 11 extends to the mounting end surface 121 is achieved, the third angle cutting edge 115 can better guide chips to be discharged from the chip groove 123, chip accumulation or winding is prevented, and the risk of machining interruption is reduced.
In some embodiments of the invention, the second corner cutting edge 113 is rounded.
Further, the second corner cutting edge 113 may be configured in a circular arc shape, and the second corner cutting edge 113 may facilitate the chip to be formed in a thinner state, and may reduce the cutting force acting on the cutting edge 11 in the high feed process, thereby improving the stability of the cutting insert 1 and extending the service life of the cutting insert 1.
In some embodiments of the present invention, the central plane 13 intersects the second corner cutting edge 113, and the distance between the intersection of the central plane 13 with the second corner cutting edge 113 and the main cutting edge 112 in the third direction is D1, and the width of the main cutting edge 112 is D2, satisfying the relation D2< D1.
The intersection point of the center plane 13 and the cutting edge 11 is disposed at the second corner cutting edge 113, the center plane 13 intersects the second corner cutting edge 113, the second corner cutting edge 113 is connected with the main cutting edge 112, the distance between the intersection point of the center plane 13 and the second corner cutting edge 113 and the main cutting edge 112 is D1, the width of the main cutting edge 112 is D2, when the cutting insert 1 processes a workpiece, the second corner cutting edge 113 contacts the workpiece first, the main cutting edge 112 contacts the workpiece again, and by setting the distance between the intersection point of the center plane 13 and the second corner cutting edge 113 and the main cutting edge 112 to be greater than the width of the main cutting edge 112, the cutting force generated during processing can be more stable, the elastic deformation of the workpiece can be effectively prevented, the surface roughness of the processed workpiece can be improved, the cutting strength required by the cutting edge 11 to be larger than the cutting depth can be improved, the breakage of the cutting edge 11 can be reduced, and the high-feed processing can be performed more efficiently.
In some embodiments of the invention, the relationship 0.5 mm.ltoreq.D1.ltoreq.5 mm is satisfied.
Illustratively, the distance between the intersection of the center plane 13 with the second corner cutting edge 113 and the main cutting edge 112 may be 0.5mm, 1.2mm, 2mm, 3.8mm, 4.5mm, 5mm, etc., and the distance between the intersection of the center plane 13 with the second corner cutting edge 113 and the main cutting edge 112 may be between 0.5mm and 5mm, and any value including the end point value is the distance between the intersection of the optional center plane 13 with the second corner cutting edge 113 and the main cutting edge 112 according to the present invention. If the distance between the intersection of the center plane 13 and the second corner cutting edge 113 and the main cutting edge 112 is smaller than 0.5mm, the load applied to the cutting edge 11 may increase, which may affect the service life of the cutting insert 1, and may reduce the cutting depth of the cutting insert 1. If the distance between the intersection of the center plane 13 and the second corner cutting edge 113 and the main cutting edge 112 is greater than 5mm, cutting force may be increased, vibration may be caused during cutting, cutting efficiency may be reduced, and the service life of the cutting insert 1 may be affected. Therefore, the distance between the intersection point of the center plane 13 and the second angular cutting edge 113 and the main cutting edge 112 is in the range of 0.5mm-5mm, so that the cutting force can be balanced, the risk of damage to the cutting insert 1 due to uneven concentration or dispersion of the cutting force is reduced, and the service life of the cutting insert 1 is prolonged. And the overall rigidity of the cutting blade 1 can be improved, the stability of the cutting blade 1 is ensured, and the adaptability of the cutting blade 1 is improved, so that the cutting blade can adapt to different processing conditions and workpiece materials.
In some embodiments of the present invention, as shown in FIG. 2, the blade body 12 has a central axis extending in a first direction, the central axis of the blade body 12 is spaced apart by a distance L3 from a line tangent to the first angled cutting edge 111, and the central axis of the blade body 12 is spaced apart by a distance L4 from a line tangent to the second angled cutting edge 113, 0.8L 3/L4 1.2.
The insert body 12 has a central axis extending in a first direction, the central axis being located on a central plane 13, points A1, L3 on the first corner cutting edge 111 having the greatest separation distance from the central axis being the perpendicular distance between the central axis of the insert body 12 and a line tangential to A1, and points A2, L4 on the second corner cutting edge 113 having the greatest separation distance from the central axis being the perpendicular distance between the central axis of the insert body 12 and a line tangential to A2. The ratio of the perpendicular distance between the central axis of the blade body 12 and the line tangential to A1 to the perpendicular distance between the central axis of the blade body 12 and the line tangential to A2 may be K, and illustratively, the ratio of the perpendicular distance between the central axis of the blade body 12 and the line tangential to A1 to the perpendicular distance between the central axis of the blade body 12 and the line tangential to A2 may be 0.8, 0.95, 1.05, 1.1, 1.2, etc., the ratio of the perpendicular distance between the central axis of the blade body 12 and the line tangential to A1 to the perpendicular distance between the central axis of the blade body 12 and the line tangential to A2 may be between 0.8 and 1.2, and any value including the end point values is the ratio of the perpendicular distance between the central axis of the blade body 12 and the line tangential to A1 to the line tangential to A2, and the perpendicular distance between the central axis of the blade body 12 to the line tangential to A2, which are optional in the present invention.
If the ratio of the perpendicular distance between the central axis of the blade body 12 and the line tangent to A1 to the perpendicular distance between the central axis of the blade body 12 and the line tangent to A2 is less than 0.8, the cutting force distribution may be uneven by making the first angle cutting edge 111 approach the central axis with respect to the second angle cutting edge 113, increasing the vibration and noise of the cutting blade 1, and affecting the service life of the cutting blade 1. If the ratio of the perpendicular distance between the central axis of the blade body 12 and the line tangent to A1 to the perpendicular distance between the central axis of the blade body 12 and the line tangent to A2 is greater than 1.2, the second angle cutting edge 113 is too close to the central axis with respect to the first angle cutting edge 111, which may result in uneven cutting force distribution, increase vibration and noise of the cutting blade 1, and affect the service life of the cutting blade 1. If the ratio of the perpendicular distance between the center axis of the blade body 12 and the line tangential to A1 to the perpendicular distance between the center axis of the blade body 12 and the line tangential to A2 is between 0.8 and 1.2, the cutting force can be uniformly distributed, which is advantageous for improving the stability of the cutting blade 1, and when K approaches 0.8, a larger cutting depth of the cutting edge 11 can be achieved, and when K approaches 1.2, the feeding amount of the cutting edge 11 can be achieved, thereby achieving a more efficient high-feeding process.
In some embodiments of the present invention, each mounting end surface 121 is provided with a plurality of cutting portions 10, and the plurality of cutting portions 10 on the same mounting end surface 121 are symmetrical about the central axis of the insert body 12.
Each of the mounting end surfaces 121 is provided with a plurality of cutting portions 10, and in the embodiment of the present invention, two cutting portions 10 are provided for each of the mounting end surfaces 121. Each mounting end surface 121 is provided with two cutting portions 10 opposite and spaced apart in the second direction, both cutting portions 10 intersecting the respective first side surface 1221, both cutting portions 10 on the same mounting end surface 121 being symmetrical about the central axis of the insert body 12. Each of the mounting end surfaces 121 is provided with a plurality of cutting portions 10, which can improve the cutting efficiency of the cutting insert 1 and the machining efficiency of a workpiece. The plurality of cutting portions 10 on the same mounting end surface 121 are symmetrical about the central axis of the insert body 12, so that the cutting forces acting on the cutting insert 1 can be distributed more uniformly, which is advantageous for improving the surface roughness of the workpiece to be machined.
In some embodiments of the invention, the connection side 122 is perpendicular to both mounting end surfaces 121.
The connecting side surface 122 is connected between the two mounting end surfaces 121, the connecting side surface 122 can support the two mounting end surfaces 121, and the connecting side surface 122 is perpendicular to the two mounting end surfaces 121, so that the rigidity of the cutting insert 1 is improved, the cutting insert 1 is more stable when bearing cutting force, and vibration of the cutting insert 1 in the cutting process is further reduced. Also, the connecting side surface 122 being perpendicular to both mounting end surfaces 121 may simplify the geometry of the cutting insert 1, making the design and manufacture of the cutting insert 1 easier.
The cutting tool 100 according to the second aspect of the present invention includes the tool body 2 and the cutting insert 1 of the above embodiment, and the cutting insert 1 is fixed to the tool body 2.
As shown in fig. 4 and 5, according to the cutting tool 100 of the embodiment of the present invention, the cutting tool 100 includes a tool body 2 and a cutting insert 1, the tool body 2 has an insert seat 21 for receiving the cutting insert 1, and a plurality of cutting inserts 1 may be provided on the tool body 2. As an example, the insert holder 21 may include a bottom placement surface 22, a major side placement surface 23, and a minor side placement surface 24, the bottom placement surface 22 being formed with a first mounting hole 221 for mounting the cutting insert 1, the cutting insert 1 having a first mounting hole 124 formed therein, the first mounting hole 124 penetrating the cutting insert 1 in an arrangement direction of the two mounting end surfaces 121, the first mounting hole 221 and the first mounting hole 124 each being configured as a screw hole, the first mounting hole 221 and the first mounting hole 124 each being fittable with a screw, the cutting insert 1 being fixedly coupled to the insert body 2 by the screw. When the cutting insert 1 is mounted on the insert seat 21, the bottom placing surface 22 can be abutted with the mounting end surface 121 of the cutting insert 1, the primary side placing surface 23 can be abutted with the first side surface 1221 of the cutting insert 1, and the secondary side placing surface 24 can be abutted with the second side surface 1222 of the cutting insert 1, so that the spacing fit between the cutting insert 1 and the insert seat 21 is realized, the cutting insert 1 is stably arranged on the cutter body 2, the stability and the safety of the operation of the cutting tool 100 are guaranteed, and the cutting tool 100 can realize the cutting effect.
Other constructions and operations of the cutting insert 1 and the cutting tool 100 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411308438.6A CN118808693B (en) | 2024-09-19 | 2024-09-19 | Cutting insert and cutting tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411308438.6A CN118808693B (en) | 2024-09-19 | 2024-09-19 | Cutting insert and cutting tool |
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| CN118808693A CN118808693A (en) | 2024-10-22 |
| CN118808693B true CN118808693B (en) | 2025-01-14 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2415544B1 (en) * | 2009-04-02 | 2016-09-21 | Tungaloy Corporation | Cutting insert and indexable cutting tool |
| SE535171C2 (en) * | 2010-09-24 | 2012-05-08 | Sandvik Intellectual Property | Gear cutter and interchangeable cutter for this |
| JP5967330B1 (en) * | 2015-09-25 | 2016-08-10 | 三菱日立ツール株式会社 | Cutting insert and cutting edge exchangeable rotary cutting tool |
| EP3199284B1 (en) * | 2016-01-27 | 2018-12-12 | Pramet Tools, S.R.O. | An indexable cutting insert for an end mill tool and an end mill tool provided with such an insert |
| JP6562983B2 (en) * | 2017-08-10 | 2019-08-21 | 株式会社タンガロイ | Cutting insert and cutting tool |
| US11850670B2 (en) * | 2020-04-24 | 2023-12-26 | Kennametal India Ltd. | Milling cutting inserts |
| CN113664270B (en) * | 2021-09-07 | 2022-11-01 | 株洲华锐精密工具股份有限公司 | Cutting blade and cutting tool |
| CN117644221B (en) * | 2024-01-30 | 2024-04-05 | 赣州澳克泰工具技术有限公司 | Cutting insert and cutting tool with stable cutting |
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