CN119457219A - Double-sided enhanced cutting blade and cutting tool - Google Patents

Abstract

The invention relates to the technical field of cutting tools, and provides a double-sided enhanced cutting blade and a cutting tool, which have the cutting characteristics of a double-sided negative blade with a special transverse side surface structure, can greatly ensure the guiding effect of low cutting force and cutting forming direction, have a special transverse mounting surface structure, are beneficial to the mounting stability and the enhancement of the strength of the blade, and have the preload pressure compared with a positive blade and because of the non-coplanar mounting surface structure when being mounted on a cutter body in a matched manner, thereby further having the functions of preventing loosening caused by play and increasing the cutting processing stability. Based on the cutting insert described above, a tool with a low cutting force and a stable and reliable result is obtained.

Description

Double-sided enhanced cutting blade and cutting tool

Technical Field

The invention belongs to the technical field of cutting tools, and particularly relates to a double-sided enhanced cutting blade and a cutting tool.

Background

With the popularization of high-power spindle machine tools, more and more customers need to meet large cutting parameters, pursue high metal removal rate to realize high-efficiency cutting, and meanwhile, need to have reliable clamping, stable cutting and excellent machining performance, so that the development of cutting tools with low cutting force and stable and reliable clamping becomes particularly important.

Disclosure of Invention

In order to solve the problems in the prior art, the main purpose of the invention is to provide a double-sided enhanced cutting insert and a cutting tool.

In order to solve the technical problems, according to one aspect of the present invention, the following technical solutions are provided:

a double-sided enhanced cutting insert rotationally symmetrical about an X-axis, comprising:

an upper end surface, a lower end surface arranged opposite to the upper end surface, and a side surface connecting the upper end surface and the lower end surface;

The side surface comprises:

A lateral side comprising a major lateral side comprising a first major lateral side and a third major lateral side, and the third major lateral side is partially adjacent the first major lateral side, wherein the third major lateral side comprises first and second non-coplanar lateral mounting surfaces, the first and second lateral mounting surfaces being parallel to the Z-axis, respectively;

a longitudinal side comprising a main longitudinal side;

the corner side surface is positioned between the adjacent transverse side surface and the longitudinal side surface and comprises a first corner side surface and a fourth corner side surface, wherein two ends of the main transverse side surface are respectively connected with the first corner side surface and the fourth corner side surface, and one end of the main longitudinal side surface is connected with the first corner side surface;

The blade part formed at the intersection of the side surface and the upper end surface comprises a main blade, and the main blade at least comprises:

a main cutting edge which is arranged at the intersection of the main transverse side surface and the upper end surface;

A main corner cutting edge provided at the intersection of the first corner side surface and the upper end surface;

a secondary corner cutting edge provided at the intersection of the fourth corner side surface and the upper end surface;

wherein, two ends of the main cutting edge are respectively connected with the main corner cutting edge and the secondary corner cutting edge;

The upper end face is overlooked from the Z-axis direction, and the main cutting edge is convex;

the major cutting edge is lowered and then raised in the Z-axis direction from the major corner cutting edge to the minor corner cutting edge in the Y-axis direction when the major lateral side surface is viewed from the X-axis direction.

As a preferred embodiment of the double-sided enhanced cutting insert of the present invention, wherein the lowest point of the distance between the major cutting edge in the Z-axis direction and the Y-axis is located at a side close to the minor corner cutting edge.

As a preferred embodiment of the double-sided enhanced cutting insert of the present invention, wherein the distance between the major corner cutting edge in the Z-axis direction and the Y-axis is greater than the distance between the minor corner cutting edge in the Z-axis direction and the Y-axis.

As a preferred version of the double-sided enhanced cutting insert of the present invention, the major lateral sides further comprise a second major lateral side, a fourth major lateral side, and a fifth major lateral side.

As a preferable mode of the double-sided enhanced cutting insert of the present invention, wherein a first main lateral side, a third main lateral side, a fourth main lateral side, and a second main lateral side are arranged in this order from the upper end face to the lower end face in the Z-axis direction on the side adjacent to the first corner side, wherein a part of the first main lateral side is connected to a first lateral mounting face in the third main lateral side, the first lateral mounting face is connected to the fourth main lateral side, and the fourth main lateral side is connected to a part of the second main lateral side.

In a preferable mode of the double-sided enhanced cutting insert according to the present invention, the main longitudinal side surface is seen from the Y-axis direction, the first main lateral side surface inclined downward away from the center of the insert, the third main lateral side surface parallel to the Z-axis direction and not inclined, the fourth main lateral side surface inclined downward away from the center of the insert, and the second main lateral side surface inclined downward toward the center of the insert are arranged in this order from the upper end surface to the lower end surface in the Z-axis direction.

As a preferable mode of the double-sided enhanced cutting insert of the present invention, wherein a first main lateral side, a fifth main lateral side, a third main lateral side, and a second main lateral side are arranged in this order from the upper end face to the lower end face in the Z-axis direction on the side adjacent to the fourth corner side, wherein a part of the first main lateral side is connected to the fifth main lateral side, the fifth main lateral side is connected to a second lateral mounting face in the third main lateral side, and the second lateral mounting face is connected to a part of the second main lateral side.

As a preferable mode of the double-sided enhanced cutting insert of the present invention, wherein the longitudinal side surface further comprises a secondary longitudinal side surface, one end of the secondary longitudinal side surface is connected with a fourth corner side surface, the secondary longitudinal side surface is overlooked from the Y-axis direction, a first main transverse side surface inclined downwards away from the center of the insert, a fifth main transverse side surface inclined downwards near the center of the insert, a third main transverse side surface parallel to the Z-axis direction and not inclined, and a second main transverse side surface inclined downwards near the center of the insert are sequentially arranged at one side adjacent to the fourth corner side surface from the upper end surface to the lower end surface.

As a preferable mode of the double-sided enhanced cutting insert of the present invention, the first main lateral side surface and the second main lateral side surface are rotationally symmetrical and non-coplanar along the X-axis direction, the fourth main lateral side surface and the fifth main lateral side surface are rotationally symmetrical and non-coplanar along the X-axis direction, and the first lateral mounting surface and the second lateral mounting surface are rotationally symmetrical and non-coplanar along the X-axis direction.

As a preferred embodiment of the double-sided enhanced cutting insert according to the present invention, wherein the upper end surface is seen from the Z-axis direction, the first and fourth major lateral sides are visible, and the third and fifth major lateral sides are not visible.

As a preferable mode of the double-sided enhanced cutting insert of the present invention, wherein the intersection of the fourth main lateral side surface and the first lateral mounting surface forms an angle α3, and the intersection of the fifth main lateral side surface and the second lateral mounting surface also forms an angle α3, wherein α3 is 5 DEG.ltoreq.α3.ltoreq.90 deg.

As a preferable mode of the double-sided enhanced cutting insert of the present invention, in which the height M1 of the first lateral mounting surface gradually increases and the height M4 of the second lateral mounting surface gradually decreases along the direction from the major corner cutting edge to the minor corner cutting edge, the intersection of the two surfaces is formed with the maximum height M2, and M2> M1> M4.

As a preferable scheme of the double-sided enhanced cutting insert, the cutting part further comprises a secondary cutting edge, the main cutting edge further comprises a secondary cutting edge, wherein the secondary cutting edge and the secondary cutting edge are positioned at the intersection of the main longitudinal side surface and the upper end surface, and two ends of the secondary cutting edge are respectively connected with the secondary cutting edge and the main corner cutting edge.

As a preferred embodiment of the double-sided enhanced cutting insert of the present invention, wherein the major cutting edge is formed by the intersection of a first major lateral side surface with a major rake surface, the major corner cutting edge is formed by the intersection of a first corner side surface with a corner rake surface, the minor cutting edge is formed by the intersection of a major longitudinal side surface with a minor rake surface, the minor corner cutting edge is formed by the intersection of a fourth corner side surface with a corner rake surface, and the minor edge is formed by the intersection of a major longitudinal side surface with a minor rake surface.

In a preferable mode of the double-sided enhanced cutting insert according to the present invention, in a cross section perpendicular to the Z-axis and intersecting the third main lateral side surface and the main longitudinal side surface, the first lateral mounting surface forms an angle θ1 with the main longitudinal side surface, the second lateral mounting surface forms an angle θ3 with the main longitudinal side surface, θ1+equalto 90 ° and θ3+equalto 90 °, further, θ1+equalto 90 ° and θ1+equalto θ3, further, θ3<90 °, and θ1+equalto θ3=180°.

In a preferable mode of the double-sided enhanced cutting insert according to the present invention, in a cross section taken along a vertical Z-axis and intersecting the third main lateral side surface, the first lateral mounting surface intersects the second lateral mounting surface at an angle θ2, and an apex of θ2 is located in a central region of the main lateral side surface, the angle θ2 being directed toward an inner opening of the cutting insert.

As a preferable scheme of the double-sided enhanced cutting insert, 140 degrees is less than or equal to theta 2<180 degrees, and theta 2> theta 1> theta 3.

As a preferable mode of the double-sided enhanced cutting insert, the upper end face is provided with an upper mounting face, and the lower end face is provided with a lower mounting face.

As a preferable mode of the double-sided enhanced cutting insert of the present invention, the insert further comprises an insert hole penetrating through the upper end face and the lower end face.

In order to solve the above technical problems, according to another aspect of the present invention, the following technical solutions are provided:

A cutting tool, comprising:

a cutter body and the double-sided enhanced cutting insert;

The cutter body is provided with at least one cutter grain groove, and comprises a first transverse supporting surface, a second transverse supporting surface and a third supporting surface which are matched with a first transverse mounting surface, a second transverse mounting surface and a mounting surface of the cutting blade respectively;

wherein the first lateral support surface is inclined towards the interior of the blade body and the second lateral support surface is inclined towards the interior of the blade body from a direction opposite to the first lateral support surface.

The beneficial effects of the invention are as follows:

The invention provides a double-sided enhanced cutting blade and a cutting tool, which have the cutting characteristics of a double-sided negative type blade with a special transverse side surface structure, can greatly ensure the guiding effect of low cutting force and cutting forming direction, have a transverse mounting surface structure with special arrangement, are beneficial to the mounting stability and the enhancement of blade strength, and have the preload pressure compared with a mounting surface structure of a positive type blade which is stronger and not coplanar when being mounted on a tool body in a matching way, thereby further having the effects of loosening prevention and cutting machining stability. A stable and reliable tool with low cutting forces is obtained.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a double-sided enhanced cutting insert according to the present invention;

FIG. 2 is a schematic diagram of a double-sided enhanced cutting insert according to the present invention;

FIG. 3 is a schematic view of the lateral side of a double-sided enhanced cutting insert of the present invention;

FIG. 4 is a schematic view of the structure of an end face of a double-sided enhanced cutting insert of the present invention;

FIG. 5 is a schematic view of the longitudinal side of a double-sided enhanced cutting insert of the present invention;

FIG. 6 is a cross-sectional view taken along AX-AX in FIG. 4;

FIG. 7 is a cross-sectional view taken along line AY-AY of FIG. 4;

FIG. 8 is a cross-sectional view taken along W-W in FIG. 4;

FIG. 9 is a cross-sectional view taken along line V-V in FIG. 4;

FIG. 10 is a cross-sectional view taken along AA-AA in FIG. 5;

FIG. 11 is a cross-sectional view taken along line AB-AB of FIG. 5;

FIG. 12 is a cross-sectional view taken along Z-Z in FIG. 5;

Fig. 13 is a schematic view of the structure of the cutting tool of the present invention.

The reference numerals in the figure mean that 100 parts of the cutter blade, 200 parts of the cutter body and 300 parts of the cutter;

2, a blade hole, 5, a main blade, 6, an auxiliary blade and 7, a corner side surface;

The X axis is vertical to the center of the transverse side surface and penetrates through the virtual transverse axis direction of the transverse side surface;

The Y axis is vertical to the center of the longitudinal side surface and penetrates through the virtual longitudinal axis direction of the longitudinal side surface;

the Z axis is vertical to the center of the end face and penetrates through the virtual axis direction of the end face;

11 is an upper end face, 12 is a lower end face;

31 a major lateral side, 32 a minor lateral side;

41 major longitudinal sides 42 minor longitudinal sides;

51 major cutting edge, 52 major corner cutting edge, 53 minor cutting edge, 54 minor corner cutting edge;

71 a first corner side, 72 a second corner side, 73 a third corner side, 74 a fourth corner side;

111, an upper mounting surface; 112, a main front section, 113, a corner front section, 114, a secondary front section, 115, a secondary front section, 121, a lower mounting surface;

311 first major lateral side, 312 second major lateral side, 313 third major lateral side, 314 fourth major lateral side, 315 fifth major lateral side, 3131 first lateral mounting surface, 3132 second lateral mounting surface;

201, a knife grain groove, 2011, a first transverse supporting surface, 2012, a second transverse supporting surface and 2013, a third supporting surface.

The end of the arrow in the figure is marked:

the whole area surface of the azimuth is represented;

the whole is denoted as a blade;

solid arrows indicate the faces within the small area;

solid black dots, representing the specific face;

Open circles, representing lines;

Filled squares-representing the specific line.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description will be made clearly and fully with reference to the technical solutions in the embodiments, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The present invention provides a double-sided enhanced cutting insert and a cutting tool, as shown in fig. 1 to 12, the double-sided enhanced cutting insert is rotationally symmetric with respect to an X-axis, comprising:

An upper end surface 11, a lower end surface 12 provided opposite to the upper end surface 11, and a side surface 20 connecting the upper end surface 11 and the lower end surface 12;

The side face 20 includes:

A lateral side comprising a major lateral side 31, the major lateral side 31 comprising a first major lateral side 311 and a third major lateral side 313, and the third major lateral side 313 being partially adjacent to the first major lateral side 311, wherein the third major lateral side 313 comprises first and second non-coplanar lateral mounting surfaces 3131, 3132, the first and second lateral mounting surfaces 3131, 3132 being parallel to the Z-axis, respectively;

a longitudinal side comprising a main longitudinal side 41;

Corner side surface 7, which is located between the adjacent lateral side surface and longitudinal side surface, comprises a first corner side surface 71 and a fourth corner side surface 74, wherein two ends of the main lateral side surface 31 are respectively connected with the first corner side surface 71 and the fourth corner side surface 74, one end of the main longitudinal side surface 41 is connected with the first corner side surface 71, reasonable partition arrangement is realized for the functional area of the main lateral side surface 31, and the functional area is complemented with each other, so that better installation stability is realized while the cutting strength is met.

The edge portion formed at the intersection of the side surface 20 and the upper end surface 11 includes a main edge 5, and the main edge 5 includes at least:

a main cutting edge 51 provided at the intersection of the main lateral side surface 31 and the upper end surface 11;

A main corner cutting edge 52 provided at the intersection of the first corner side surface 71 and the upper end surface 11;

a minor corner cutting edge 54 provided at the intersection of the fourth corner side surface 74 and the upper end surface 11;

Wherein both ends of the main cutting edge 51 are connected to a main corner cutting edge 52 and a sub corner cutting edge 54, respectively;

The upper end face 11 is overlooked from the Z-axis direction, and the main cutting edge 51 is convex;

The major cutting edge 51 is lowered and then raised in the Z-axis direction from the major corner cutting edge 52 toward the minor corner cutting edge 54, looking down at the major lateral side surface 31 from the X-axis direction.

The morphology features of the main cutting edge 51 on different visual angles can reasonably meet the primary requirements of good machining side quality, the guiding effect of the reduced part of the main cutting edge 51 on the low cutting force and the cutting forming direction can be guaranteed greatly, and the stronger cutting edge during larger cutting depth can be guaranteed by the reversely increased part of the main cutting edge 51, so that the cutting becomes more gentle and stable. The structure of the transverse side face is beneficial to the installation stability and the enhancement of the blade strength, and when the cutter body is installed in a matched mode, the cutter body has stronger than a normal type blade and has preload pressure due to the non-coplanar installation surface structure of the normal type blade, so that the cutter body has the function of preventing loosening caused by play and the function of enhancing the cutting machining stability.

In one embodiment of the present invention, the lowest point of the distance between the main cutting edge 51 in the Z-axis direction and the Y-axis is located on the side near the minor corner cutting edge 54.

In one embodiment of the present invention, the distance between the major corner cutting edge 52 and the Y-axis is greater than the distance between the minor corner cutting edge 54 and the Z-axis.

In one embodiment of the present invention, the major lateral side 31 further includes a second major lateral side 312, a fourth major lateral side 314, and a fifth major lateral side 315.

In one embodiment of the present invention, from the upper end surface 11 to the lower end surface 12 along the Z-axis direction, a first main lateral side 311, a third main lateral side 313, a fourth main lateral side 314, and a second main lateral side 312 are sequentially arranged on the side adjacent to the first corner side 71, wherein a portion of the first main lateral side 311 is connected to a first lateral mounting surface 3131 in the third main lateral side 313, the first lateral mounting surface 3131 is connected to the fourth main lateral side 314, and the fourth main lateral side 314 is connected to a portion of the second main lateral side 312. From the Y-axis direction, the main longitudinal side 41 is seen in a plan view, and from the upper end surface 11 to the lower end surface 12 in the Z-axis direction, a first main lateral side 311 inclined downward away from the center of the blade, a third main lateral side 313 parallel to the Z-axis direction and not inclined, a fourth main lateral side 314 inclined downward away from the center of the blade, and a second main lateral side 312 inclined downward toward the center of the blade are arranged in this order on the side adjacent to the first corner side 71. The cutting insert 100 is provided with a first main transverse side 311 structure which is inclined downwards away from the center of the insert, a third main transverse side 313 structure which is parallel to the Z-axis direction and is not inclined is arranged, so that the cutting insert 100 is provided with enough installation surface space to ensure the installation stability and the realization of large-parameter cutting, the side installation area can be reasonably controlled to ensure the stable cutting, a fourth main transverse side 314 structure which is inclined downwards away from the center of the insert is arranged, the cutting edge strength in large cutting depth is ensured, the risk of interference with a workpiece of a rear cutter surface in cutting is reduced, and a second main transverse side 312 which is inclined downwards close to the center of the insert is arranged, so that the cutting edge strength is further ensured, and the risk of interference with the workpiece is reduced.

In one embodiment of the present invention, from the upper end surface 11 to the lower end surface 12 along the Z-axis direction, a first main lateral side 311, a fifth main lateral side 315, a third main lateral side 313, and a second main lateral side 312 are arranged in this order on the side adjacent to the fourth corner side 74, wherein a portion of the first main lateral side 311 is connected to the fifth main lateral side 315, the fifth main lateral side 315 is connected to the second lateral mounting surface 3132 in the third main lateral side 313, and the second lateral mounting surface 3132 is connected to a portion of the second main lateral side 312. The functional areas of the main lateral side 31 are reasonably arranged in a partitioning manner, the functional areas complement each other, better mounting stability is realized while cutting strength is met, and particularly, when the cutting depth is half that of the blade, namely, the large cutting depth, enough cutting edge strength and proper interference prevention clearance between the rear cutter surface of the cutting blade and a workpiece can be provided, so that stable and reliable cutting guarantee is ensured. The longitudinal side surfaces further include a secondary longitudinal side surface 42, one end of the secondary longitudinal side surface 42 is connected to the fourth corner side surface 74, the secondary longitudinal side surface 42 is seen from the Y-axis direction, from the upper end surface 11 to the lower end surface 12 in the Z-axis direction, and a first main lateral side surface 311 inclined downward away from the center of the blade, a fifth main lateral side surface 315 inclined downward toward the center of the blade, a third main lateral side surface 313 parallel to the Z-axis direction and not inclined, and a second main lateral side surface 312 inclined downward toward the center of the blade are arranged in this order on the side adjacent to the fourth corner side surface 74. The structure of the first main lateral side 311 which is inclined downwards away from the center of the blade is arranged, so that the cutting blade 100 is provided with a strong main cutting edge 51 and plays a role of enhancing the cutting edge strength in large cutting depth, the structure of the fifth main lateral side 315 which is inclined downwards towards the center of the blade is arranged, the first main lateral side 311 of the main lateral side 31 which is arranged at one side close to the corner side 7 is furthest away from the center of the blade, the cutting edge strength in large cutting depth can be ensured, meanwhile, the risk of interference with a rear tool surface during cutting is reduced, the structure of the third main lateral side 313 which is parallel to the Z-axis direction and is not inclined is arranged, the cutting blade 100 is provided with enough installation surface space to provide guarantee for realizing stable installation and large-parameter cutting, the side installation area can be reasonably controlled to ensure stable cutting, and the structure of the second main lateral side 312 which is arranged downwards towards the center of the blade is arranged, namely, the main cutting edge 51 at one side close to the side of the corner side 7 is closest to the center of the blade, and the main cutting edge 51 at the side of the lower end face 12 is arranged at the opposite side towards the corner side 7, so that the risk of interference with the workpiece is reduced.

In one embodiment of the present invention, the first and second major lateral sides 311, 312 are rotationally symmetrical and non-coplanar along the X-axis direction, the fourth and fifth major lateral sides 314, 315 are rotationally symmetrical and non-coplanar along the X-axis direction, and the first and second lateral mounting surfaces 3131, 3132 are rotationally symmetrical and non-coplanar along the X-axis direction. The structure can obtain stable and reliable cutting with enhanced double surfaces.

In one embodiment of the present invention, the upper end face 11 is seen in a Z-axis direction, the first and fourth major lateral sides 311, 314 are visible, and the third and fifth major lateral sides 313, 315 are not visible. The structure shows that the blade has the enhanced stable and reliable cutting function, the visible region can enhance the strength of the cutting edge, and the invisible region can meet the strength of the cutting edge and simultaneously reduce the risk of interference of the rear tool face with a workpiece during cutting.

In one embodiment of the present invention, the intersection of the fourth major lateral side surface 314 with the first lateral mounting surface 3131 forms an angle α3, and the intersection of the fifth major lateral side surface 315 with the second lateral mounting surface 3132 also forms an angle α3, wherein 5+.α3+.90 °. The reasonable arrangement of the second lateral side 312 and the fourth lateral side 314 enhances the cutting edge strength at large depths of cut, while the reasonable angular range arrangement is easy to manufacture.

In one embodiment of the present invention, the height M1 of the first lateral mounting surface 3131 gradually increases and the height M4 of the second lateral mounting surface (3132) gradually decreases along the direction from the major corner cutting edge 52 to the minor corner cutting edge 54, and the maximum height M2 is formed at the intersection of the two surfaces, thereby defining the variation relationship and layout of the surfaces of the third major lateral side surface 313, and satisfying the requirements of blade strength, blade cutting force and mounting reliability at different cutting depth dosages, and effectively balancing the cutting performance and blade stability. And M2> M1> M4, further limit the size relation of each surface that the third main lateral side 313 has, can satisfy the blade intensity, blade cutting force and the reliable demand of installation of different depth of cut quantity, effective balanced cutting performance and blade stability.

In one embodiment of the invention, the edge portion further comprises a minor edge 6 and the major edge 5 further comprises a minor cutting edge 53, wherein the minor edge 6 and the minor cutting edge 53 are both located at the intersection of the major longitudinal side surface 41 and the upper end surface 11, and both ends of the minor cutting edge 53 are connected to the minor edge 6 and the major corner cutting edge 52, respectively. Further limiting the structural characteristics and the constitution positions of the main blade 5 and the auxiliary blade 6, and guaranteeing the orderly cutting of the blade.

In one embodiment of the present invention, the primary cutting edge 51 is formed by the intersection of the first major lateral side surface 311 with the major rake surface 112, the major corner cutting edge 52 is formed by the intersection of the first corner side surface 71 with the corner rake surface 113, the minor cutting edge 53 is formed by the intersection of the major longitudinal side surface 41 with the minor rake surface 114, the minor corner cutting edge 54 is formed by the intersection of the fourth corner side surface 74 with the corner rake surface 113, and the minor edge 6 is formed by the intersection of the major longitudinal side surface 41 with the minor rake surface 115.

In one embodiment of the present invention, in the cross section perpendicular to the Z-axis and intersecting the third main lateral side 313 and the main longitudinal side 41, the first lateral mounting surface 3131 forms an angle θ1 with the main longitudinal side 41, the second lateral mounting surface 3132 forms an angle θ3 with the main longitudinal side 41, θ1+.90° and θ3+.90°, and the characteristic that the first lateral mounting surface 3131 and the second lateral mounting surface 3132 intersect the main longitudinal side 41 at a specific angle is further described, and by providing two mounting angles other than 90 °, the insert itself has two inclined mounting surfaces, which is beneficial for enhancing the mounting stability and the play preventing function during cutting. Further, the angle range of theta 1 and the angle characteristic of theta 1 not equal to theta 3 are further defined, and theta 1>90 DEG indicates that the first transverse mounting surface 3131 is inclined away from the center of the blade along the Y-axis direction, so that the blade can be effectively prevented from moving in the opposite direction of the auxiliary blade, and the arrangement of theta 1 not equal to theta 3 can further prevent the functional failure. Further, the angle range of theta 3 and the angle relation characteristic of theta 1 and theta 3 are further defined, and the angle range of theta 3 and the angle relation characteristic of theta 1 and theta 3 are further defined, wherein the angle of theta 3<90 ℃ indicates that the second transverse mounting surface 3132 is inclined towards the center of the blade along the Y-axis direction, so that the blade can be effectively prevented from moving towards the direction of the auxiliary blade, the arrangement of theta 1 and theta 3 can further prevent the functional failure, and the anti-bouncing effect is integrally enhanced. Further, θ1+θ3=180°, and further, the characteristic of the angular relationship between θ1 and θ3 is further defined, and θ1+θ3=180° indicates that the two angles are complementary, so that a basic guarantee is provided for the third main lateral side surface to have the characteristic of rotational symmetry along the X axis, namely, the correct, stable and reliable installation of the double-sided blade is guaranteed.

In one embodiment of the present invention, in a cross section perpendicular to the Z-axis and intersecting the third major lateral side surface 313, the first lateral mounting surface 3131 intersects the second lateral mounting surface 3132 at an angle θ2, and the vertex of θ2 is located in a middle region of the major lateral side surface 31, with the angle θ2 opening toward the interior of the cutting insert 100. It is further understood that the third major lateral side 313 has a feature that extends from the middle region toward both ends toward the center of the insert. The side surface mounting area of the blade is provided with the two inclined mounting surfaces, so that the mounting stability and the loosening prevention effect during cutting are enhanced, the mounting area is increased while the self-locking and reliable mounting to a certain degree are realized, and the stable implementation of cutting is further ensured.

In one embodiment of the present invention, 140 [ theta ] 2<180 [ theta ] further defines the range of theta ] 2 angles that the third major lateral side surface 313 has. The optimization scheme optimizes the self-locking effect and the effect of stabilizing cutting implementation. And θ2> θ1> θ3, the magnitude relation between the angles of the third main lateral side 313 and the layout thereof are defined, and the self-locking effect, the mounting stability and the effect of stable cutting implementation of the bouncing prevention are optimized by the optimization scheme.

In one embodiment of the present invention, the upper end surface 11 has an upper mounting surface 111, and the lower end surface 12 has a lower mounting surface 121.

In one embodiment of the invention, the insert further comprises an insert bore 2 extending through the upper end face 11 and the lower end face 12.

The present invention also provides a cutting tool, as shown in fig. 13, comprising:

the cutter body 200 and the double-sided enhanced cutting insert 100 described above;

the cutter body 200 has at least one insert pocket 201 that includes a first lateral support surface 2011, a second lateral support surface 2012, and a third support surface 2013 that mate with the first lateral mounting surface 3131, the second lateral mounting surface 3132, and the upper mounting surface 111 or the lower mounting surface 121, respectively, of the cutting insert 100;

Wherein the first lateral support surface 2011 is inclined toward the inside of the cutter body 200, and the second lateral support surface 2012 is inclined toward the inside of the cutter body 200 from a direction opposite to the first lateral support surface 2011.

The special knife grain groove structure is provided with an inclined arrangement towards the inside of the knife body 200, when the loaded knife blade moves forwards, the knife blade is enveloped by the special structure to prevent the knife blade from escaping, and the capabilities of the knife blade of preventing movement, stable installation and reliable cutting are further enhanced.

The foregoing description of the preferred embodiments of the present invention should not be construed as limiting the scope of the invention, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims (20)

1. A double-sided enhanced cutting insert is characterized by being rotationally symmetrical about an X-axis, comprising:

An upper end surface (11), a lower end surface (12) provided opposite to the upper end surface (11), and a side surface (20) connecting the upper end surface (11) and the lower end surface (12);

the side surface (20) includes:

A lateral side comprising a major lateral side (31), the major lateral side (31) comprising a first major lateral side (311) and a third major lateral side (313), and the third major lateral side (313) being partially adjacent to the first major lateral side (311), wherein the third major lateral side (313) comprises first and second non-coplanar lateral mounting surfaces (3131, 3132), the first and second lateral mounting surfaces (3131, 3132) being parallel to the Z-axis, respectively;

A longitudinal side comprising a main longitudinal side (41);

A corner side surface (7) located between adjacent lateral and longitudinal side surfaces, comprising a first corner side surface (71) and a fourth corner side surface (74), wherein both ends of the main lateral side surface (31) are respectively connected with the first corner side surface (71) and the fourth corner side surface (74), and one end of the main longitudinal side surface (41) is connected with the first corner side surface (71);

the blade part formed at the intersection of the side surface (20) and the upper end surface (11) includes a main blade (5), and the main blade (5) includes at least:

A main cutting edge (51) provided at the intersection of the main lateral side surface (31) and the upper end surface (11);

A main corner cutting edge (52) provided at the intersection of the first corner side surface (71) and the upper end surface (11);

a secondary corner cutting edge (54) provided at the intersection of the fourth corner side surface (74) and the upper end surface (11);

wherein both ends of the main cutting edge (51) are respectively connected with the main corner cutting edge (52) and the secondary corner cutting edge (54);

The upper end surface (11) is overlooked from the Z-axis direction, and the main cutting edge (51) is convex;

a main lateral side surface (31) is seen from the X-axis direction, and the distance between the main cutting edge (51) and the Y-axis direction is reduced from the main corner cutting edge (52) to the sub corner cutting edge (54) and then increased.

2. The double-sided enhanced cutting insert according to claim 1, wherein a lowest point of a distance between the major cutting edge (51) and the Y-axis in the Z-axis direction is located at a side close to the minor corner cutting edge (54), and a distance between the major corner cutting edge (52) and the Y-axis in the Z-axis direction is greater than a distance between the minor corner cutting edge (54) and the Y-axis in the Z-axis direction.

3. The double-sided enhanced cutting insert according to claim 1, wherein the major lateral side (31) further comprises a second major lateral side (312), a fourth major lateral side (314), and a fifth major lateral side (315).

4. A double-sided enhanced cutting insert according to claim 3, wherein a first main lateral side (311), a third main lateral side (313), a fourth main lateral side (314) and a second main lateral side (312) are arranged in this order in the Z-axis direction from the upper end surface (11) to the lower end surface (12) adjacent to the first corner side (71), wherein a portion of the first main lateral side (311) is connected to a first lateral mounting surface (3131) in the third main lateral side (313), the first lateral mounting surface (3131) is connected to a fourth main lateral side (314), and the fourth main lateral side (314) is connected to a portion of the second main lateral side (312);

From the upper end surface (11) to the lower end surface (12) along the Z-axis direction, a first main lateral side surface (311), a fifth main lateral side surface (315), a third main lateral side surface (313) and a second main lateral side surface (312) are sequentially arranged at one side adjacent to the fourth corner side surface (74), wherein a part of the first main lateral side surface (311) is connected with the fifth main lateral side surface (315), the fifth main lateral side surface (315) is connected with a second lateral mounting surface (3132) in the third main lateral side surface (313), and the second lateral mounting surface (3132) is connected with a part of the second main lateral side surface (312).

5. The double-sided enhanced cutting insert according to claim 4, wherein the major longitudinal side surface (41) is seen in a top view from the Y-axis direction, and from the upper end surface (11) to the lower end surface (12) along the Z-axis direction, a first major lateral side surface (311) inclined downwardly away from the center of the insert, a third major lateral side surface (313) parallel to the Z-axis direction and not inclined, a fourth major lateral side surface (314) inclined downwardly away from the center of the insert, and a second major lateral side surface (312) inclined downwardly near the center of the insert are arranged in this order on the side adjacent to the first corner side surface (71).

6. The double-sided enhanced cutting insert according to claim 4, wherein the longitudinal side further comprises a minor longitudinal side (42), one end of the minor longitudinal side (42) being connected to the fourth corner side (74), the minor longitudinal side (42) being viewed from above in the Y-axis direction, from the upper end surface (11) to the lower end surface (12) in the Z-axis direction, a first major lateral side (311) sloping downward away from the insert center, a fifth major lateral side (315) sloping downward toward the insert center, a third major lateral side (313) parallel to the Z-axis direction and not sloping, and a second major lateral side (312) sloping downward toward the insert center being arranged in this order on a side adjacent to the fourth corner side (74).

7. The double-sided enhanced cutting insert according to claim 4, wherein the first and second major lateral sides (311, 312) are rotationally symmetric and non-coplanar along the X-axis direction, the fourth and fifth major lateral sides (314, 315) are rotationally symmetric and non-coplanar along the X-axis direction, and the first and second lateral mounting surfaces (3131, 3132) are rotationally symmetric and non-coplanar along the X-axis direction;

The upper end face (11) is seen in a Z-axis direction top view, the first main lateral side (311) and the fourth main lateral side (314) are visible, and the third main lateral side (313) and the fifth main lateral side (315) are not visible.

8. The double-sided enhanced cutting insert according to claim 4, wherein the intersection of the fourth major lateral side surface (314) with the first lateral mounting surface (3131) forms an angle α3, and the intersection of the fifth major lateral side surface (315) with the second lateral mounting surface (3132) also forms an angle α3, wherein 5 ° - α3 +.90 °.

9. The double-sided enhanced cutting insert according to claim 4, wherein the height M1 of the first lateral mounting surface (3131) gradually increases and the height M4 of the second lateral mounting surface (3132) gradually decreases along the direction from the major corner cutting edge (52) to the minor corner cutting edge (54), the intersection of the two being formed with a maximum height M2, and M2> M1> M4.

10. The double-sided enhanced cutting insert according to claim 4, wherein the edge portion further comprises a minor edge (6), the major edge (5) further comprises a minor cutting edge (53), wherein the minor edge (6) and the minor cutting edge (53) are both located at the intersection of the major longitudinal side surface (41) and the upper end surface (11), and both ends of the minor cutting edge (53) are connected to the minor edge (6) and the major corner cutting edge (52), respectively.

11. The double-sided enhanced cutting insert according to claim 10, wherein the main cutting edge (51) is formed by the intersection of a first major lateral side surface (311) with a major front tangent plane (112), the major corner cutting edge (52) is formed by the intersection of a first corner side surface (71) with a corner front tangent plane (113), the minor cutting edge (53) is formed by the intersection of a major longitudinal side surface (41) with a minor front tangent plane (114), the minor corner cutting edge (54) is formed by the intersection of a fourth corner side surface (74) with a corner front tangent plane (113), and the minor edge (6) is formed by the intersection of a major longitudinal side surface (41) with a minor front face (115).

12. The double-sided enhanced cutting insert according to claim 4, wherein in a cross section perpendicular to the Z-axis and intersecting the third major lateral side (313) and the major longitudinal side (41), the first lateral mounting surface (3131) is at an angle θ1 to the major longitudinal side (41), the second lateral mounting surface (3132) is at an angle θ3, θ1+.90 ° and θ3+.90 ° to the major longitudinal side (41).

13. The double-sided enhanced cutting insert according to claim 12, wherein θ1>90 °, and θ1+noteqθ3.

14. The double-sided enhanced cutting insert according to claim 13, wherein θ3<90 °, and θ1> θ3.

15. The double-sided enhanced cutting insert according to claim 14, wherein θ1+θ3 = 180 °.

16. The double-sided enhanced cutting insert according to claim 15, wherein in a cross section taken perpendicular to the Z-axis and intersecting the third major lateral side surface (313), the first lateral mounting surface (3131) intersects the second lateral mounting surface (3132) at an angle θ2, and wherein an apex of θ2 is located in a central region of the major lateral side surface (31), the angle θ2 opening toward the interior of the cutting insert (100).

17. The double-sided enhanced cutting insert according to claim 16, wherein 140 ° - θ2<180 °.

18. The double-sided enhanced cutting insert according to claim 17, wherein θ2> θ1> θ3.

19. The double-sided enhanced cutting insert according to claim 1, wherein the upper end surface (11) has an upper mounting surface (111) and the lower end surface (12) has a lower mounting surface (121), the insert further comprising an insert hole (2) penetrating the upper end surface (11) and the lower end surface (12).

20. A cutting tool, comprising:

A cutter body (200) and a cutting insert (100) according to any one of claims 1-19;

The cutter body (200) has at least one cutter grain slot (201) comprising a first lateral support surface (2011), a second lateral support surface (2012) respectively matching a first lateral mounting surface (3131), a second lateral mounting surface (3132) of the cutting insert (100);

wherein the first lateral support surface (2011) is inclined towards the inside of the cutter body (200), and the second lateral support surface (2012) is inclined towards the inside of the cutter body (200) from a direction opposite to the first lateral support surface (2011).