Three-dimensional staggered layout eight-edge turning tool blade and tool assembly

Abstract

The present invention provides a three-dimensional staggered layout eight-edge turning blade, which includes a substrate part, a first cutting part, a second cutting part, a third cutting part and a fourth cutting part. The substrate part has an upper base surface, a lower base surface, a front base surface, a rear base surface, a left base surface and a right base surface. The first cutting part is formed on the front base surface. The first cutting part has a first inclined surface. A first cutting edge is formed at the lower left corner of the first inclined surface, and a second cutting edge is formed at the lower right corner. The second cutting part is formed on the rear base surface. The second cutting part has a second inclined surface. A third cutting edge is formed at the lower left corner of the second inclined surface, and a fourth cutting edge is formed at the lower right corner. The third cutting part is formed on the left base surface. The third cutting part has a third inclined surface. A fifth cutting edge is formed at the upper front corner of the third inclined surface, and a sixth cutting edge is formed at the upper rear corner. The fourth cutting part is formed on the right base surface. The fourth cutting part has a fourth inclined surface. A seventh cutting edge is formed at the upper front corner of the fourth inclined surface, and an eighth cutting edge is formed at the upper rear corner.

Description

Technical Field

[0001] The present invention relates to the field of turning tools, and particularly to an octagonal turning insert and a tool assembly with a three-dimensional staggered layout. Background Art

[0002] Currently, existing ISO standard turning inserts such as WNMG08 and TNMG16 can be indexed 6 times for use. Under special working conditions, an SNMG12 insert with 8 cutting edges each at 90 degrees can be used for transverse or longitudinal turning by using two toolholders with different principal cutting edge angles respectively, but it is impossible to perform turning along the axial or radial direction of the workpiece simultaneously with one toolholder. Similarly, for a CNMG12 insert with 4 cutting edges at 80 degrees and 4 cutting edges at 100 degrees, after using the 4 cutting edges at 80 degrees, the other 4 cutting edges at 100 degrees also have to be used for transverse or longitudinal turning by using two toolholders with different principal cutting edge angles respectively, and it is impossible to perform turning along the axial or radial direction of the workpiece simultaneously with one toolholder. Therefore, there are great limitations in practical applications. Summary of the Invention

[0003] The first object of the present invention is to provide an octagonal turning insert with a three-dimensional staggered layout that can perform axial and radial feed motions simultaneously.

[0004] The second object of the present invention is to provide a tool assembly that can perform axial and radial feed motions simultaneously.

[0005] To achieve the above first object, the present invention provides a three-dimensional staggered layout eight-edge turning blade, including a substrate part, a first cutting part, a second cutting part, a third cutting part and a fourth cutting part. The substrate part has an upper base surface located above, a lower base surface located below, a front base surface located in the front, a rear base surface located in the rear, a left base surface located on the left, and a right base surface located on the right. An installation hole penetrating in the up-down direction is provided on the substrate part; the first cutting part is formed on the front base surface, the first cutting part has a first inclined surface, the first inclined surface extends obliquely downward from a position near the upper part of the front base surface towards a direction away from the lower part of the front base surface, the first cutting part forms a first cutting edge at the lower left corner of the first inclined surface, and the first cutting part forms a second cutting edge at the lower right corner of the first inclined surface; the second cutting part is formed on the rear base surface, and the second cutting part is symmetrically arranged with the first cutting part. The second cutting part has a second inclined surface, the second inclined surface extends obliquely downward from a position near the upper part of the rear base surface towards a direction away from the lower part of the rear base surface, the second cutting part forms a third cutting edge at the lower left corner of the second inclined surface, and the second cutting part forms a fourth cutting edge at the lower right corner of the second inclined surface; the third cutting part is formed on the left base surface, the third cutting part has a third inclined surface, the third inclined surface extends obliquely upward from a position near the lower part of the left base surface towards a direction away from the upper part of the left base surface, the third cutting part forms a fifth cutting edge at the front upper corner of the third inclined surface, and the third cutting part forms a sixth cutting edge at the rear upper corner of the third inclined surface; the fourth cutting part is formed on the right base surface, and the fourth cutting part is symmetrically arranged with the third cutting part. The fourth cutting part has a fourth inclined surface, the fourth inclined surface extends obliquely upward from a position near the lower part of the right base surface towards a direction away from the upper part of the right base surface, the fourth cutting part forms a seventh cutting edge at the front upper corner of the fourth inclined surface, and the fourth cutting part forms an eighth cutting edge at the rear upper corner of the fourth inclined surface.

[0006] Compared with the prior art, in the three-dimensional staggered layout eight-edge turning blade of the present invention, the first cutting part and the second cutting part are symmetrically arranged on the front cutting surface and the rear cutting surface of the substrate part, the third cutting part and the fourth cutting part are symmetrically arranged on the left cutting surface and the rear cutting surface of the substrate part, the first cutting part has a first inclined surface and forms a first cutting edge and a second cutting edge at the lower left corner and the lower right corner of the first inclined surface, the second cutting part has a second inclined surface and forms a third cutting edge and a fourth cutting edge at the lower left corner and the lower right corner of the second inclined surface, the third cutting part has a third inclined surface and forms a fifth cutting edge and a sixth cutting edge at the upper front corner and the upper rear corner of the third inclined surface, the fourth cutting part has a fourth inclined surface and forms a seventh cutting edge and an eighth cutting edge at the upper front corner and the upper rear corner of the fourth inclined surface. Therefore, the three-dimensional staggered layout eight-edge turning blade of the present invention has eight cutting edges. When any one of the eight cutting edges is used for axial feed movement and radial feed movement, the non-cutting part of the tool will not interfere with the workpiece and cause a collision phenomenon. Therefore, the three-dimensional staggered layout eight-edge turning blade of the present invention can perform axial and radial feed movements simultaneously.

[0007] Preferably, the first cutting portion includes a first left side surface, a first right side surface, and a first bottom surface. The first left side surface is located on the left side of the first inclined surface and is connected between the first inclined surface and the front base surface. The first right side surface is located on the right side of the first inclined surface and is connected between the first inclined surface and the front base surface. The first bottom surface is located at the bottom of the first inclined surface, the first left side surface, and the first right side surface, and the first bottom surface is connected to the first inclined surface, the first left side surface, the first right side surface, and the front base surface. A first connecting arc is provided between the first inclined surface and the first bottom surface. The second cutting portion includes a second left side surface, a second right side surface, and a second bottom surface. The second left side surface is located on the left side of the second inclined surface and is connected between the second inclined surface and the rear base surface. The second right side surface is located on the right side of the second inclined surface and is connected between the second inclined surface and the rear base surface. The second bottom surface is located at the bottom of the second inclined surface, the second left side surface, and the second right side surface, and the second bottom surface is connected to the second inclined surface, the second left side surface, the second right side surface, and the rear base surface. A second connecting arc is provided between the second inclined surface and the second bottom surface. The third cutting portion includes a third front side surface, a third rear side surface, and a third top surface. The third front side surface is located on the front side of the third inclined surface and is connected between the third inclined surface and the left base surface. The third rear side surface is located on the rear side of the third inclined surface and is connected between the third inclined surface and the left base surface. The third top surface is located at the top of the third inclined surface, the third front side surface, and the third rear side surface, and the third top surface is connected to the third inclined surface, the third front side surface, the third rear side surface, and the left base surface. A third connecting arc is provided between the third inclined surface and the third bottom surface. The fourth cutting portion includes a fourth front side surface, a fourth rear side surface, and a fourth top surface. The fourth front side surface is located on the front side of the fourth inclined surface and is connected between the fourth inclined surface and the right base surface. The fourth rear side surface is located on the rear side of the fourth inclined surface and is connected between the fourth inclined surface and the right base surface. The fourth top surface is located at the top of the fourth inclined surface, the fourth front side surface, and the fourth rear side surface, and the fourth top surface is connected to the fourth inclined surface, the fourth front side surface, the fourth rear side surface, and the right base surface. A fourth connecting arc is provided between the fourth inclined surface and the fourth bottom surface.

[0008] Preferably, the top edge of the first inclined surface is connected to the front base surface; the top edge of the second inclined surface is connected to the rear base surface; the bottom edge of the third inclined surface is connected to the left base surface; the bottom edge of the fourth inclined surface is connected to the right base surface.

[0009] Preferably, the top edge of the first inclined surface is connected to the junction of the upper base surface and the front base surface; the top edge of the second inclined surface is connected to the junction of the upper base surface and the rear base surface; the bottom edge of the third inclined surface is connected below the junction of the lower base surface and the left base surface; the bottom edge of the fourth inclined surface is connected below the junction of the lower base surface and the right base surface.

[0010] Preferably, the first bottom surface is in the same plane as the lower base surface; the second bottom surface is in the same plane as the lower base surface; the third top surface is in the same plane as the upper base surface; the fourth top surface is in the same plane as the upper base surface.

[0011] Preferably, the first bottom surface is inclined relative to the lower base surface; the second bottom surface is inclined relative to the lower base surface; the third top surface is inclined relative to the upper base surface; the fourth top surface is inclined relative to the upper base surface.

[0012] Preferably, the first cutting portion further includes a first top surface, the first top surface is located at the top of the first inclined surface, the first left side surface and the first right side surface, and the first top surface is connected to the first inclined surface, the first left side surface, the first right side surface and the front base surface; the second cutting portion further includes a second top surface, the second top surface is located at the top of the second inclined surface, the second left side surface and the second right side surface, and the second top surface is connected to the second inclined surface, the second left side surface, the second right side surface and the rear base surface; the third cutting portion further includes a third bottom surface, the third bottom surface is located at the bottom of the third inclined surface, the third front side surface and the third rear side surface, and the third bottom surface is connected to the third inclined surface, the third front side surface, the third rear side surface and the left base surface; the fourth cutting portion further includes a fourth bottom surface, the fourth bottom surface is located at the bottom of the fourth inclined surface, the fourth front side surface and the fourth rear side surface, and the fourth bottom surface is connected to the fourth inclined surface, the fourth front side surface, the fourth rear side surface and the right base surface.

[0013] Preferably, the first top surface is in the same plane as the upper base surface; the second top surface is in the same plane as the upper base surface; the third bottom surface is in the same plane as the lower base surface; the fourth bottom surface is in the same plane as the lower base surface.

[0014] Preferably, the first bottom surface is in the same plane as the lower base surface; the second bottom surface is in the same plane as the lower base surface; the third top surface is in the same plane as the upper base surface; the fourth top surface is in the same plane as the upper base surface.

[0015] Preferably, the first bottom surface is inclined relative to the lower base surface; the second bottom surface is inclined relative to the lower base surface; the third top surface is inclined relative to the upper base surface; the fourth top surface is inclined relative to the upper base surface.

[0016] Preferably, the upper base surface and the first top surface are vertically staggered; the upper base surface and the second top surface are vertically staggered; the third bottom surface and the lower base surface are vertically staggered; the fourth bottom surface and the lower base surface are vertically staggered.

[0017] Preferably, the bottom edges of the first inclined surface are all connected to one end of the first connecting arc, and the front side edges of the first bottom surface are all connected to the other end of the first connecting arc; the bottom edges of the second inclined surface are all connected to one end of the second connecting arc, and the rear side edges of the second bottom surface are all connected to the other end of the second connecting arc; the top edges of the third inclined surface are all connected to one end of the third connecting arc, and the left side edges of the third top surface are all connected to the other end of the third connecting arc; the top edges of the fourth inclined surface are all connected to one end of the fourth connecting arc, and the right side edges of the fourth top surface are all connected to the other end of the fourth connecting arc.

[0018] Preferably, one end of the bottom edge of the first inclined surface and one end of the front side edge of the first bottom surface are connected by the first connecting arc, and the other end of the bottom edge of the first inclined surface is directly connected to the other end of the front side edge of the first bottom surface; one end of the bottom edge of the second inclined surface and one end of the rear side edge of the second bottom surface are connected by the second connecting arc, and the other end of the bottom edge of the second inclined surface is directly connected to the other end of the rear side edge of the second bottom surface; one end of the top edge of the third inclined surface and one end of the left side edge of the third top surface are connected by the third connecting arc, and the other end of the top edge of the third inclined surface is directly connected to the other end of the left side edge of the third top surface; one end of the top edge of the fourth inclined surface and one end of the right side edge of the fourth top surface are connected by the fourth connecting arc, and the other end of the top edge of the fourth inclined surface is directly connected to the other end of the right side edge of the fourth top surface.

[0019] Preferably, a first left chip evacuation groove is provided on the first left side surface, and a first right chip evacuation groove is provided on the first right side surface; a second left chip evacuation groove is provided on the second left side surface, and a second right chip evacuation groove is provided on the second right side surface; a third front chip evacuation groove is provided on the third front side surface, and a third rear chip evacuation groove is provided on the third rear side surface; a fourth front chip evacuation groove is provided on the fourth front side surface, and a fourth rear chip evacuation groove is provided on the fourth rear side surface.

[0020] Preferably, the front base surface and the left base surface are joined by a first connecting surface, the front base surface and the right base surface are joined by a second connecting surface, the rear base surface and the left base surface are joined by a third connecting surface, and the rear base surface and the right base surface are joined by a fourth connecting surface.

[0021] Preferably, the first inclined surface is a concave inclined surface that is concave from both left and right sides towards the middle, the second inclined surface is a concave inclined surface that is concave from both left and right sides towards the middle, the third inclined surface is a concave inclined surface that is concave from both front and rear sides towards the middle, the fourth inclined surface is a concave inclined surface that is concave from both front and rear sides towards the middle, the first bottom surface is a concave bottom surface that is concave from both left and right sides towards the middle, the second bottom surface is a concave bottom surface that is concave from both left and right sides towards the middle, the third top surface is a concave top surface that is concave from both front and rear sides towards the middle, and the fourth top surface is a concave top surface that is concave from both front and rear sides towards the middle.

[0022] To achieve the above second object, the present invention provides a tool assembly, including a tool shank and the above-mentioned three-dimensional staggered layout eight-edge turning blade, and the three-dimensional staggered layout eight-edge turning blade is mounted on the tool shank.

[0023] Compared with the prior art, the tool assembly of the present invention has a three-dimensional staggered layout eight-edge turning blade. The three-dimensional staggered layout eight-edge turning blade symmetrically arranges a first cutting portion and a second cutting portion on the front base surface and the rear base surface of the substrate portion, symmetrically arranges a third cutting portion and a fourth cutting portion on the left base surface and the rear base surface of the substrate portion, and the first cutting portion has a first inclined surface and forms a first cutting edge and a second cutting edge at the lower left corner and the lower right corner of the first inclined surface, the second cutting portion has a second inclined surface and forms a third cutting edge and a fourth cutting edge at the lower left corner and the lower right corner of the second inclined surface, the third cutting portion has a third inclined surface and forms a fifth cutting edge and a sixth cutting edge at the upper front corner and the upper rear corner of the third inclined surface, and the fourth cutting portion has a fourth inclined surface and forms a seventh cutting edge and an eighth cutting edge at the upper front corner and the upper rear corner of the fourth inclined surface. Therefore, the three-dimensional staggered layout eight-edge turning blade of the present invention has eight cutting edges, the service life of the tool is longer, the use cost of the blade can be reduced, and when the three-dimensional staggered layout eight-edge turning blade of the present invention is mounted on the tool shank and any one of the eight cutting edges is used for axial feed movement or radial feed movement, the non-cutting part of the tool will not interfere with the workpiece and cause a collision phenomenon. The tool assembly of the present invention can perform axial and radial feed movements simultaneously. Description of the Drawings

[0024] Figure 1 is a three-dimensional structure diagram of the first embodiment of the three-dimensional staggered layout eight-edge turning blade of the present invention.

[0025] Figure 2 is a three-dimensional structure diagram of the first embodiment of the three-dimensional staggered layout eight-edge turning blade of the present invention from another angle.

[0026] Figure 3 It is a structural diagram of the substrate part of the first embodiment of the three-dimensional staggered layout eight-edge turning blade of the present invention.

[0027] Figure 4 It is a three-dimensional structural diagram of the second embodiment of the three-dimensional staggered layout eight-edge turning blade of the present invention.

[0028] Figure 5 It is a three-dimensional structural diagram of another angle of the second embodiment of the three-dimensional staggered layout eight-edge turning blade of the present invention.

[0029] Figure 6 It is a structural diagram of the substrate part of the second embodiment of the three-dimensional staggered layout eight-edge turning blade of the present invention.

[0030] Figure 7 It is a three-dimensional structural diagram of the third embodiment of the three-dimensional staggered layout eight-edge turning blade of the present invention.

[0031] Figure 8 It is Figure 7 the front view of.

[0032] Figure 9 It is Figure 7 the rear view of.

[0033] Figure 10 It is Figure 7 the left view of.

[0034] Figure 11 It is Figure 7 the right view of.

[0035] Figure 12 It is Figure 7 the top view of.

[0036] Figure 13 It is Figure 7 the bottom view of.

[0037] Figure 14 It is a three-dimensional structural diagram of the fourth embodiment of the three-dimensional staggered layout eight-edge turning blade of the present invention.

[0038] Figure 15 It is a three-dimensional structural diagram of the fifth embodiment of the three-dimensional staggered layout eight-edge turning blade of the present invention.

[0039] Figure 16 It is a three-dimensional structural diagram of another angle of the fifth embodiment of the three-dimensional staggered layout eight-edge turning blade of the present invention.

[0040] Figure 17 It is a three-dimensional structural diagram of the sixth embodiment of the three-dimensional staggered layout eight-edge turning blade of the present invention.

[0041] Figure 18 It is a three-dimensional structure diagram of another angle of the sixth embodiment of the eight-edge turning tool with a three-dimensional staggered layout of the present invention.

[0042] Figure 19 It is a three-dimensional structure diagram of the seventh embodiment of the eight-edge turning tool with a three-dimensional staggered layout of the present invention.

[0043] Figure 20 It is a three-dimensional structure diagram of the eighth embodiment of the eight-edge turning tool with a three-dimensional staggered layout of the present invention.

[0044] Figure 21 It is Figure 20 a top view of.

[0045] Figure 22 It is Figure 20 a bottom view of.

[0046] Figure 23 It is Figure 20 a front view of.

[0047] Figure 24 It is Figure 20 a rear view of.

[0048] Figure 25 It is Figure 20 a left view of.

[0049] Figure 26 It is Figure 20 a right view of.

[0050] Figure 27 It is a three-dimensional structure diagram of the ninth embodiment of the eight-edge turning tool with a three-dimensional staggered layout of the present invention.

[0051] Figure 28 It is Figure 27 a front view of.

[0052] Figure 29 It is Figure 27 a rear view of.

[0053] Figure 30 It is Figure 27 a left view of.

[0054] Figure 31 It is Figure 27 a right view of.

[0055] Figure 32 It is a three-dimensional structure diagram of the tool assembly of the present invention.

[0056] Figure 33 It is a three-dimensional structure diagram of another embodiment of the tool assembly of the present invention. Detailed implementation manners

[0057] To elaborate on the technical content and structural features of the present invention in detail, the following further description is provided in conjunction with the embodiments and with reference to the accompanying drawings.

[0058] Please refer to Figure 32 , the tool assembly 200 of the present invention includes a tool shank 201 and an eight-edge turning insert 100 with a three-dimensional staggered layout. The eight-edge turning insert 100 with a three-dimensional staggered layout is mounted on the tool shank 201. Please refer to Figures 1 to 3, the three-dimensional staggered layout eight-edge turning blade 100 of the present invention includes a substrate portion 1, a first cutting portion 2, a second cutting portion 3, a third cutting portion 4, and a fourth cutting portion 5. The substrate portion 1 has an upper base surface 11 located above, a lower base surface 12 located below, a front base surface 13 located on the front side, a rear base surface 14 located on the rear side, a left base surface 15 located on the left side, and a right base surface 16 located on the right side. An installation hole 17 is provided on the substrate portion 1 and runs through in the vertical direction; specifically, the three-dimensional staggered layout eight-edge turning blade 100 can be installed on the tool bar 201 by passing a bolt through the installation hole 17. The tool bar can be a flat tool bar (male turning tool bar) or a clamping tool bar (female turning tool bar), but not limited thereto. The first cutting portion 2 is formed on the front base surface 13. The first cutting portion 2 has a first inclined surface 21, which extends obliquely downward from a position near the upper part of the front base surface 13 towards the lower part away from the front base surface 13. The first cutting portion 2 forms a first cutting edge 22 at the lower left corner of the first inclined surface 21 and a second cutting edge 23 at the lower right corner of the first inclined surface 21; the second cutting portion 3 is formed on the rear base surface 14, and the second cutting portion 3 is symmetrically arranged with the first cutting portion 2. The second cutting portion 3 has a second inclined surface 31, which extends obliquely downward from a position near the upper part of the rear base surface 14 towards the lower part away from the rear base surface 14. The second cutting portion 3 forms a third cutting edge 32 at the lower left corner of the second inclined surface 31 and a fourth cutting edge 33 at the lower right corner of the second inclined surface 31; the third cutting portion 4 is formed on the left base surface 15. The third cutting portion 4 has a third inclined surface 41, which extends obliquely upward from a position near the lower part of the left base surface 15 towards the upper part away from the left base surface 15. The third cutting portion 4 forms a fifth cutting edge 42 at the front upper corner of the third inclined surface 41 and a sixth cutting edge 43 at the rear upper corner of the third inclined surface 41; the fourth cutting portion 5 is formed on the right base surface 16, and the fourth cutting portion 5 is symmetrically arranged with the third cutting portion 4. The fourth cutting portion 5 has a fourth inclined surface 51, which extends obliquely upward from a position near the lower part of the right base surface 16 towards the upper part away from the right base surface 16. The fourth cutting portion 5 forms a seventh cutting edge 52 at the front upper corner of the fourth inclined surface 51 and an eighth cutting edge 53 at the rear upper corner of the fourth inclined surface 51. Specifically, the upper base surface 11 and the lower base surface 12 are parallel to each other, the front base surface 13 and the rear base surface 14 are parallel to each other, the left base surface 15 and the right base surface 16 are parallel to each other, and the first inclined surface 21, the second inclined surface 31, the third inclined surface 41, and the fourth inclined surface 51 are all inclined relative to the upper base surface 11 and the lower base surface 12, but not limited thereto.

[0059] Please refer to Figure 1 and Figure 2, in the first embodiment of the present invention, the first cutting portion 2 includes a first left side surface 24, a first right side surface 25 and a first bottom surface 26. The first left side surface 24 is located on the left side of the first inclined surface 21 and is joined between the first inclined surface 21 and the front base surface 13. The first right side surface 25 is located on the right side of the first inclined surface 21 and is joined between the first inclined surface 21 and the front base surface 13. The first bottom surface 26 is located at the bottom of the first inclined surface 21, the first left side surface 24 and the first right side surface 25, and the first bottom surface 26 is joined to the first inclined surface 21, the first left side surface 24, the first right side surface 25 and the front base surface 13. The second cutting portion 3 includes a second left side surface 34, a second right side surface 35 and a second bottom surface 36. The second left side surface 34 is located on the left side of the second inclined surface 31 and is joined between the second inclined surface 31 and the rear base surface 14. The second right side surface 35 is located on the right side of the second inclined surface 31 and is joined between the second inclined surface 31 and the rear base surface 14. The second bottom surface 36 is located at the bottom of the second inclined surface 31, the second left side surface 34 and the second right side surface 35, and the second bottom surface 36 is joined to the second inclined surface 31, the second left side surface 34, the second right side surface 35 and the rear base surface 14. The third cutting portion 4 includes a third front side surface 44, a third rear side surface 45 and a third top surface 46. The third front side surface 44 is located on the front side of the third inclined surface 41 and is joined between the third inclined surface 41 and the left base surface 15. The third rear side surface 45 is located on the rear side of the third inclined surface 41 and is joined between the third inclined surface 41 and the left base surface 15. The third top surface 46 is located at the top of the third inclined surface 41, the third front side surface 44 and the third rear side surface 45, and the third top surface 46 is joined to the third inclined surface 41, the third front side surface 44, the third rear side surface 45 and the left base surface 15. The fourth cutting portion 5 includes a fourth front side surface 54, a fourth rear side surface 55 and a fourth top surface 56. The fourth front side surface 54 is located on the front side of the fourth inclined surface 51 and is joined between the fourth inclined surface 51 and the right base surface 16. The fourth rear side surface 55 is located on the rear side of the fourth inclined surface 51 and is joined between the fourth inclined surface 51 and the right base surface 16. The fourth top surface 56 is located at the top of the fourth inclined surface 51, the fourth front side surface 54 and the fourth rear side surface 55, and the fourth top surface 56 is joined to the fourth inclined surface 51, the fourth front side surface 54, the fourth rear side surface 55 and the right base surface 16.

[0060] Please refer to Figures 1 to 3 , in the first embodiment of the present invention, the top edge of the first inclined surface 21 is connected to the front base surface 13; the top edge of the second inclined surface 31 is connected to the rear base surface 14. The bottom edge of the third inclined surface 41 is connected to the left base surface 15; the bottom edge of the fourth inclined surface 51 is connected to the right base surface 16. As Figure 1 and Figure 2As shown, in the first embodiment of the present invention, the top edge of the first inclined surface 21 is connected to the junction of the upper base surface 11 and the front base surface 13; the top edge of the second inclined surface 31 is connected to the junction of the upper base surface 11 and the rear base surface 14; the bottom edge of the third inclined surface 41 is connected to the lower part of the junction of the lower base surface 12 and the left base surface 15; the bottom edge of the fourth inclined surface 51 is connected to the lower part of the junction of the lower base surface 12 and the right base surface 16. More specifically, the first bottom surface 26 and the lower base surface 12 are on the same plane; the second bottom surface 36 and the lower base surface 12 are on the same plane; the third top surface 46 and the upper base surface 11 are on the same plane; the fourth top surface 56 and the upper base surface 11 are on the same plane. As Figure 15 and Figure 16 shown, in the fifth embodiment of the present invention, the first bottom surface 26 may also be inclined relative to the lower base surface 12; the second bottom surface 36 may also be inclined relative to the lower base surface 12; the third top surface 46 may also be inclined relative to the upper base surface 11; the fourth top surface 56 may also be inclined relative to the upper base surface 11.

[0061] As Figures 4 to 6 shown in the second embodiment, or as Figures 7 to 13 shown in the third embodiment, or Figure 14 to the fourth embodiment shown, the first cutting part 2 further includes a first top surface 28, the first top surface 28 is located at the top of the first inclined surface 21, the first left side surface 24 and the first right side surface 25, and the first top surface 28 is connected to the first inclined surface 21, the first left side surface 24, the first right side surface 25 and the front base surface 13; the second cutting part 3 further includes a second top surface 38, the second top surface 38 is located at the top of the second inclined surface 31, the second left side surface 34 and the second right side surface 35, and the second top surface 38 is connected to the second inclined surface 31, the second left side surface 34, the second right side surface 35 and the rear base surface 14; the third cutting part 4 further includes a third bottom surface 48, the third bottom surface 48 is located at the bottom of the third inclined surface 41, the third front side surface 44 and the third rear side surface 45, and the third bottom surface 48 is connected to the third inclined surface 41, the third front side surface 44, the third rear side surface 45 and the left base surface 15; the fourth cutting part 5 further includes a fourth bottom surface 58, the fourth bottom surface 58 is located at the bottom of the fourth inclined surface 51, the fourth front side surface 54 and the fourth rear side surface 55, and the fourth bottom surface 58 is connected to the fourth inclined surface 51, the fourth front side surface 54, the fourth rear side surface 55 and the right base surface 16. Specifically, the first top surface 28 and the upper base surface 11 are on the same plane; the second top surface 38 and the upper base surface 11 are on the same plane; the third bottom surface 48 and the lower base surface 12 are on the same plane; the fourth bottom surface 58 and the lower base surface 12 are on the same plane. More specifically, the first bottom surface 26 and the lower base surface 12 are on the same plane; the second bottom surface 36 and the lower base surface 12 are on the same plane; the third top surface 46 and the upper base surface 11 are on the same plane; the fourth top surface 56 and the upper base surface 11 are on the same plane. As Figures 27 to 31As shown, in the ninth embodiment of the present invention, the first bottom surface 26 may also be inclined relative to the lower base surface 12; the second bottom surface 36 may also be inclined relative to the lower base surface 12; the third top surface 46 may also be inclined relative to the upper base surface 11; the fourth top surface 56 may also be inclined relative to the upper base surface 11.

[0062] As Figure 19 shown in the seventh embodiment, or as Figures 20 to 26 shown in the eighth embodiment, the upper base surface 11 and the first top surface 28 are vertically staggered; the upper base surface 11 and the second top surface 38 are vertically staggered; the third bottom surface 48 and the lower base surface 12 are vertically staggered; the fourth bottom surface 58 and the lower base surface 12 are vertically staggered. This avoids the problem of interference and collision of the tool during the feeding movement. Specifically, a first transition inclined portion 181 inclined downward is connected between the upper base surface 11 and the front base surface 13; a second transition inclined portion 182 inclined downward is connected between the upper base surface 11 and the rear base surface 14; a third transition inclined portion 183 inclined upward is connected between the lower base surface 12 and the left base surface 15, and a fourth transition inclined portion 184 inclined upward is connected between the lower base surface 12 and the right base surface 16. The first transition inclined portion 181, the second transition inclined portion 182, the third transition inclined portion 183 and the fourth transition inclined portion 184 may be planar, single-arc-shaped or stepped, etc.

[0063] Please refer to Figure 1 and Figure 2 , in the first embodiment, a first connecting arc 27 is provided between the first inclined surface 21 and the first bottom surface 26; a second connecting arc 37 is provided between the second inclined surface 31 and the second bottom surface 36; a third connecting arc 47 is provided between the third inclined surface 41 and the third bottom surface 48; a fourth connecting arc 57 is provided between the fourth inclined surface 51 and the fourth bottom surface 58. Specifically, the bottom edges of the first inclined surface 21 are all connected to one end of the first connecting arc 27, and the front side edges of the first bottom surface 26 are all connected to the other end of the first connecting arc 27; the bottom edges of the second inclined surface 31 are all connected to one end of the second connecting arc 37, and the rear side edges of the second bottom surface 36 are all connected to the other end of the second connecting arc 37; the top edges of the third inclined surface 41 are all connected to one end of the third connecting arc 47, and the left side edges of the third top surface 46 are all connected to the other end of the third connecting arc 47; the top edges of the fourth inclined surface 51 are all connected to one end of the fourth connecting arc 57, and the right side edges of the fourth top surface 56 are all connected to the other end of the fourth connecting arc 57. However, it is not limited thereto. For example, as Figure 15 and 16As shown, in the fifth embodiment of the present invention, one end of the bottom edge of the first inclined surface 21 is connected to one end of the front side edge of the first bottom surface 26 through a first connecting arc 27, and the other end of the bottom edge of the first inclined surface 21 is directly connected to the other end of the front side edge of the first bottom surface 26; one end of the bottom edge of the second inclined surface 31 is connected to one end of the rear side edge of the second bottom surface 36 through a second connecting arc 37, and the other end of the bottom edge of the second inclined surface 31 is directly connected to the other end of the rear side edge of the second bottom surface 36; one end of the top edge of the third inclined surface 41 is connected to one end of the left side edge of the third top surface 46 through a third connecting arc 47, and the other end of the top edge of the third inclined surface 41 is directly connected to the other end of the left side edge of the third top surface 46; one end of the top edge of the fourth inclined surface 51 is connected to one end of the right side edge of the fourth top surface 56 through a fourth connecting arc 57, and the other end of the top edge of the fourth inclined surface 51 is directly connected to the other end of the right side edge of the fourth top surface 56.

[0064] Please refer to Figure 1 and Figure 2 , in the first embodiment, the first connecting arc 27, the second connecting arc 37, the third connecting arc 47 and the fourth connecting arc 57 are arc-shaped structures with a single R (radius), but not limited thereto. In other embodiments, the first connecting arc 27, the second connecting arc 37, the third connecting arc 47 and the fourth connecting arc 57 can be formed by connecting multiple arc-shaped structures with different Rs.

[0065] Such as Figures 7 to 13 shown in the third embodiment, or Figure 14 to the fourth embodiment shown, or as Figures 20 to 26In the eighth embodiment shown, a first left chip discharge groove 241 is provided on the first left side surface 24, and a first right chip discharge groove 251 is provided on the first right side surface 25; a second left chip discharge groove 341 is provided on the second left side surface 34, and a second right chip discharge groove 351 is provided on the second right side surface 35; a third front chip discharge groove 441 is provided on the third front side surface 44, and a third rear chip discharge groove 451 is provided on the third rear side surface 45; a fourth front chip discharge groove 541 is provided on the fourth front side surface 54, and a fourth rear chip discharge groove 551 is provided on the fourth rear side surface 55. Specifically, the first left chip discharge groove 241 includes a first left inclined chip discharge groove 241a extending along the left side edge of the first inclined surface 21 and a first left lower chip discharge groove 241b extending along the left side edge of the first bottom surface 26, and the lower end of the first left inclined chip discharge groove 241a communicates with the front end of the first left lower chip discharge groove 241b; the first right chip discharge groove 251 includes a first right inclined chip discharge groove 251a extending along the right side edge of the first inclined surface 21 and a first right lower chip discharge groove 251b extending along the right side edge of the first bottom surface 26, and the lower end of the first right inclined chip discharge groove 251a communicates with the front end of the first right lower chip discharge groove 251b; the second left chip discharge groove 341 includes a second left inclined chip discharge groove 341a extending along the left side edge of the second inclined surface 31 and a second left lower chip discharge groove 341b extending along the left side edge of the second bottom surface 36, and the lower end of the second left inclined chip discharge groove 341a communicates with the rear end of the second left lower chip discharge groove 341b; the second right chip discharge groove 351 includes a second right inclined chip discharge groove 351a extending along the right side edge of the second inclined surface 31 and a second right lower chip discharge groove 351b extending along the right side edge of the second bottom surface 36, and the lower end of the second right inclined chip discharge groove 351a communicates with the rear end of the second right lower chip discharge groove 351b; the third front chip discharge groove 441 includes a third front inclined chip discharge groove 441a extending along the front side edge of the third inclined surface 41 and a third front upper chip discharge groove 441b extending along the front side edge of the third top surface 46, and the upper end of the third front inclined chip discharge groove 441a communicates with the left end of the third front upper chip discharge groove 441b; the third rear chip discharge groove 451 includes a third rear inclined chip discharge groove 451a extending along the rear side edge of the third inclined surface 41 and a third rear upper chip discharge groove 451b extending along the rear side edge of the third top surface 46, and the upper end of the third rear inclined chip discharge groove 451a communicates with the left end of the third rear upper chip discharge groove 451b; the fourth front chip discharge groove 541 includes a fourth front inclined chip discharge groove 541a extending along the front side edge of the fourth inclined surface 51 and a fourth front upper chip discharge groove 541b extending along the front side edge of the fourth top surface 56, and the upper end of the fourth front inclined chip discharge groove 541a communicates with the right end of the fourth front upper chip discharge groove 541b; the fourth rear chip discharge groove 551 includes a fourth rear inclined chip discharge groove 551a extending along the rear side edge of the fourth inclined surface 51 and a fourth rear upper chip discharge groove 551b extending along the rear side edge of the fourth top surface 56, and the upper end of the fourth rear inclined chip discharge groove 551a communicates with the right end of the fourth rear upper chip discharge groove 551b.

[0066] In Figures 20 to 26 In the eighth embodiment shown, a plurality of first left protrusions 241c are provided in the first left inclined chip discharging groove 241a and the first lower left chip discharging groove 241b, and a plurality of first right protrusions 251c are provided in the first right inclined chip discharging groove 251a and the first lower right chip discharging groove 251b; a plurality of second left protrusions 341c are provided in the second left inclined chip discharging groove 341a and the second lower left chip discharging groove 341b, and a plurality of second right protrusions 351c are provided in the second right inclined chip discharging groove 351a and the second lower right chip discharging groove 351b; a plurality of third front protrusions 441c are provided in the third front inclined chip discharging groove 441a and the third front upper chip discharging groove 441b, and a plurality of third rear protrusions 451c are provided in the third rear inclined chip discharging groove 451a and the third rear upper chip discharging groove 451b; a plurality of fourth front protrusions 541c are provided in the fourth front inclined chip discharging groove 541a and the fourth front upper chip discharging groove 541b, and a plurality of fourth rear protrusions 551c are provided in the fourth rear inclined chip discharging groove 551a and the fourth rear upper chip discharging groove 551b.

[0067] In Figure 14 In the fourth embodiment shown, the left side of the first inclined surface 21 at the position of the first left inclined chip discharging groove 241a and the left side of the first bottom surface 26 at the position of the first lower left chip discharging groove 241b are wavy, and the right side of the first inclined surface 21 at the position of the first right inclined chip discharging groove 251a and the right side of the first bottom surface 26 at the position of the first lower right chip discharging groove 251b are wavy; the left side of the second inclined surface 31 at the position of the second left inclined chip discharging groove 341a and the left side of the second bottom surface 36 at the position of the second lower left chip discharging groove 341b are wavy, and the right side of the second inclined surface 31 at the position of the second right inclined chip discharging groove 351a and the right side of the second bottom surface 36 at the position of the second lower right chip discharging groove 351b are wavy; the front side of the third inclined surface 41 at the position of the third front inclined chip discharging groove 441a and the front side of the third top surface 46 at the position of the third front upper chip discharging groove 441b are wavy, and the rear side of the third inclined surface 41 at the position of the third rear inclined chip discharging groove 451a and the rear side of the third top surface 46 at the position of the third rear upper chip discharging groove 451b are wavy; the front side of the fourth inclined surface 51 at the position of the fourth front inclined chip discharging groove 541a and the front side of the fourth top surface 56 at the position of the fourth front upper chip discharging groove 541b are wavy, and the rear side of the fourth inclined surface 51 at the position of the fourth rear inclined chip discharging groove 551a and the rear side of the fourth top surface 56 at the position of the fourth rear upper chip discharging groove 551b are wavy.

[0068] As Figure 19 shown in the seventh embodiment or Figures 20 to 26In the eighth embodiment shown, the front base surface 13 and the left base surface 15 are joined by a first connecting surface 191, the front base surface 13 and the right base surface 16 are joined by a second connecting surface 192, the rear base surface 14 and the left base surface 15 are joined by a third connecting surface 193, and the rear base surface 14 and the right base surface 16 are joined by a fourth connecting surface 194. Among them, the first connecting surface 191 is a flat surface, the second connecting surface 192 is a flat surface, the third connecting surface 193 is a flat surface, and the fourth connecting surface 194 is a flat surface. However, it is not limited thereto. For example, the first connecting surface 191 is an arc surface, the second connecting surface 192 is an arc surface, the third connecting surface 193 is an arc surface, and the fourth connecting surface 194 is an arc surface.

[0069] As Figure 17 , Figure 18 In the sixth embodiment shown, the first inclined surface 21 is a concave inclined surface that is concave from both left and right sides towards the middle, the second inclined surface 31 is a concave inclined surface that is concave from both left and right sides towards the middle, the third inclined surface 41 is a concave inclined surface that is concave from both front and rear sides towards the middle, and the fourth inclined surface 51 is a concave inclined surface that is concave from both front and rear sides towards the middle. Further, the first bottom surface 26 is a concave bottom surface that is concave from both left and right sides towards the middle, and the second bottom surface 36 is a concave bottom surface that is concave from both left and right sides towards the middle; the third top surface 46 is a concave top surface that is concave from both front and rear sides towards the middle, and the fourth top surface 56 is a concave top surface that is concave from both front and rear sides towards the middle.

[0070] It should be noted that the shape of the base portion 1 can be a cube shape, but it is not limited thereto. In other embodiments, the shape of the base portion 1 can also be a cuboid shape, a polyhedron shape, or other irregular three-dimensional shapes.

[0071] As Figure 32 and Figure 33 shown, and in combination with Figures 1 to 31 , the specific working principle of the three-dimensional staggered layout eight-edge turning tool blade tool assembly 200 of the present invention is as follows:

[0072] The three-dimensional staggered layout eight-edge turning blade 100 of the present invention is locked on a flat tool shank (male tool shank) by bolts passing through the mounting holes 17. The workpiece to be machined is clamped on the lathe spindle and rotated. One of the cutting edges of the three-dimensional staggered layout eight-edge turning blade 100 contacts the workpiece. Since the hardness of the blade material is higher than that of the workpiece to be machined, the workpiece material is removed during the radial feed movement or axial feed movement of the three-dimensional staggered layout eight-edge turning blade 100 on the flat tool shank, thereby obtaining the required workpiece shape and size. The cutting edge of the blade will wear or break during the cutting process, that is, the cutting edge will be worn. When the wear of the cutting edge exceeds a certain range, the blade needs to be flipped and the above operations are repeated to make full use of the four cutting edges in the same circumferential direction. When the four cutting edges of the three-dimensional staggered layout eight-edge turning blade 100 mounted on the flat tool shank are worn out, the three-dimensional staggered layout eight-edge turning blade 100 of the present invention is locked on a vertical tool shank (female tool shank), and the workpiece to be machined is clamped on the lathe spindle and rotated. Repeat the similar operations as those on the flat tool shank above, and the other four cutting edges can be reused.

[0073] In summary, the tool assembly 200 of the present invention has a three-dimensional staggered layout eight-edge turning blade 100. The three-dimensional staggered layout eight-edge turning blade 100 symmetrically arranges the first cutting part 2 and the second cutting part 3 on the front base surface 13 and the rear base surface 14 of the base part 1, and symmetrically arranges the third cutting part 4 and the fourth cutting part 5 on the left base surface 15 and the rear base surface 14 of the base part 1. The first cutting part 2 has a first inclined surface 21 and forms a first cutting edge 22 and a second cutting edge 23 at the lower left corner and the lower right corner of the first inclined surface 21. The second cutting part 3 has a second inclined surface 31 and forms a third cutting edge 32 and a fourth cutting edge 33 at the lower left corner and the lower right corner of the second inclined surface 31. The third cutting part 4 has a third inclined surface 41 and forms a fifth cutting edge 42 and a sixth cutting edge 43 at the front upper corner and the rear upper corner of the third inclined surface 41. The fourth cutting part 5 has a fourth inclined surface 51 and forms a seventh cutting edge 52 and an eighth cutting edge 53 at the front upper corner and the rear upper corner of the fourth inclined surface 51. Therefore, the three-dimensional staggered layout eight-edge turning blade 100 of the present invention has eight edges. When the three-dimensional staggered layout eight-edge turning blade 100 of the present invention is mounted on a flat tool shank or a vertical tool shank and any one of the eight edges is used for axial feed movement and radial feed movement respectively, the non-cutting part of the tool will not interfere with the workpiece and cause a collision phenomenon. Therefore, the tool assembly of the present invention can perform axial and radial feed movements simultaneously.

[0074] The above-disclosed are only preferred examples of the present invention and cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention all fall within the scope covered by the present invention.

Claims

1. A three-dimensional staggered layout eight-edge turning tool blade, characterized in that, Comprising: A base portion having an upper base surface located above, a lower base surface located below, a front base surface located at the front side, a rear base surface located at the rear side, a left base surface located at the left side, and a right base surface located at the right side. An installation hole penetrating in the up-down direction is provided on the base portion; A first cutting portion formed on the front base surface. The first cutting portion has a first inclined surface which extends obliquely downward from a position near the upper part of the front base surface toward a direction away from the lower part of the front base surface. A first cutting edge is formed at the lower left corner of the first inclined surface of the first cutting portion, and a second cutting edge is formed at the lower right corner of the first inclined surface of the first cutting portion; A second cutting portion formed on the rear base surface and symmetrically arranged with the first cutting portion. The second cutting portion has a second inclined surface which extends obliquely downward from a position near the upper part of the rear base surface toward a direction away from the lower part of the rear base surface. A third cutting edge is formed at the lower left corner of the second inclined surface of the second cutting portion, and a fourth cutting edge is formed at the lower right corner of the second inclined surface of the second cutting portion; A third cutting portion formed on the left base surface. The third cutting portion has a third inclined surface which extends obliquely upward from a position near the lower part of the left base surface toward a direction away from the upper part of the left base surface. A fifth cutting edge is formed at the upper front corner of the third inclined surface of the third cutting portion, and a sixth cutting edge is formed at the upper rear corner of the third inclined surface of the third cutting portion; A fourth cutting portion formed on the right base surface and symmetrically arranged with the third cutting portion. The fourth cutting portion has a fourth inclined surface which extends obliquely upward from a position near the lower part of the right base surface toward a direction away from the upper part of the right base surface. A seventh cutting edge is formed at the upper front corner of the fourth inclined surface of the fourth cutting portion, and an eighth cutting edge is formed at the upper rear corner of the fourth inclined surface of the fourth cutting portion.

2. The three-dimensional staggered layout eight-edge turning blade according to claim 1, wherein The first cutting portion includes a first left side surface, a first right side surface and a first bottom surface. The first left side surface is located on the left side of the first inclined surface and is connected between the first inclined surface and the front base surface. The first right side surface is located on the right side of the first inclined surface and is connected between the first inclined surface and the front base surface. The first bottom surface is located at the bottom of the first inclined surface, the first left side surface and the first right side surface, and the first bottom surface is connected to the first inclined surface, the first left side surface, the first right side surface and the front base surface. A first connecting arc is provided between the first inclined surface and the first bottom surface; The second cutting part includes a second left side, a second right side and a second bottom surface. The second left side is located on the left side of the second inclined surface and is connected between the second inclined surface and the rear base surface. The second right side is located on the right side of the second inclined surface and is connected between the second inclined surface and the rear base surface. The second bottom surface is located at the bottom of the second inclined surface, the second left side and the second right side, and the second bottom surface is connected to the second inclined surface, the second left side, the second right side and the rear base surface. A second connecting arc is provided between the second inclined surface and the second bottom surface; The third cutting part includes a third front side, a third rear side and a third top surface. The third front side is located on the front side of the third inclined surface and is connected between the third inclined surface and the left base surface. The third rear side is located on the rear side of the third inclined surface and is connected between the third inclined surface and the left base surface. The third top surface is located at the top of the third inclined surface, the third front side and the third rear side, and the third top surface is connected to the third inclined surface, the third front side, the third rear side and the left base surface. The third cutting part further includes a third bottom surface. The third bottom surface is located at the bottom of the third inclined surface, the third front side and the third rear side, and the third bottom surface is connected to the third inclined surface, the third front side, the third rear side and the left base surface. A third connecting arc is provided between the third inclined surface and the third bottom surface; The fourth cutting part includes a fourth front side, a fourth rear side and a fourth top surface. The fourth front side is located on the front side of the fourth inclined surface and is connected between the fourth inclined surface and the right base surface. The fourth rear side is located on the rear side of the fourth inclined surface and is connected between the fourth inclined surface and the right base surface. The fourth top surface is located at the top of the fourth inclined surface, the fourth front side and the fourth rear side, and the fourth top surface is connected to the fourth inclined surface, the fourth front side, the fourth rear side and the right base surface. The fourth cutting part further includes a fourth bottom surface. The fourth bottom surface is located at the bottom of the fourth inclined surface, the fourth front side and the fourth rear side, and the fourth bottom surface is connected to the fourth inclined surface, the fourth front side, the fourth rear side and the right base surface. A fourth connecting arc is provided between the fourth inclined surface and the fourth bottom surface.

3. The three-dimensional staggered layout eight-edge turning tool blade according to claim 2, characterized in that, The top edge of the first inclined surface is connected to the front base surface; the top edge of the second inclined surface is connected to the rear base surface; the bottom edge of the third inclined surface is connected to the left base surface; the bottom edge of the fourth inclined surface is connected to the right base surface.

4. The three-dimensional staggered layout eight-edge turning blade according to claim 3, wherein, The top edge of the first inclined surface is connected to the junction of the upper base surface and the front base surface; the top edge of the second inclined surface is connected to the junction of the upper base surface and the rear base surface; the bottom edge of the third inclined surface is connected to the junction of the lower base surface and the left base surface; the bottom edge of the fourth inclined surface is connected to the junction of the lower base surface and the right base surface.

5. The three-dimensional staggered layout eight-edge turning blade according to claim 4, wherein, The first bottom surface is in the same plane as the lower base surface; the second bottom surface is in the same plane as the lower base surface; the third top surface is in the same plane as the upper base surface; the fourth top surface is in the same plane as the upper base surface.

6. The three-dimensional staggered layout eight-edge turning blade according to claim 4, characterized in that The first bottom surface is inclined relative to the lower base surface; the second bottom surface is inclined relative to the lower base surface; the third top surface is inclined relative to the upper base surface; the fourth top surface is inclined relative to the upper base surface.

7. The three-dimensional staggered layout eight-edge turning blade according to claim 2, characterized in that, The first cutting portion further includes a first top surface, the first top surface is located at the top of the first inclined surface, the first left side surface and the first right side surface, and the first top surface is connected to the first inclined surface, the first left side surface, the first right side surface and the front base surface; The second cutting portion further includes a second top surface, the second top surface is located at the top of the second inclined surface, the second left side surface and the second right side surface, and the second top surface is connected to the second inclined surface, the second left side surface, the second right side surface and the rear base surface.

8. The three-dimensional staggered layout eight-edge turning tool blade according to claim 7, characterized in that, The first top surface is in the same plane as the upper base surface; the second top surface is in the same plane as the upper base surface; the third bottom surface is in the same plane as the lower base surface; the fourth bottom surface is in the same plane as the lower base surface.

9. The three-dimensional staggered layout eight-edge turning tool blade according to claim 8, characterized in that, The first bottom surface is in the same plane as the lower base surface; the second bottom surface is in the same plane as the lower base surface; the third top surface is in the same plane as the upper base surface; the fourth top surface is in the same plane as the upper base surface.

10. The three-dimensional staggered layout eight-edge turning tool blade according to claim 8, characterized in that, The first bottom surface is inclined relative to the lower base surface; the second bottom surface is inclined relative to the lower base surface; the third top surface is inclined relative to the upper base surface; the fourth top surface is inclined relative to the upper base surface.

11. The three-dimensional staggered layout eight-edge turning blade according to claim 7, characterized in that, The upper base surface and the first top surface are vertically staggered; the upper base surface and the second top surface are vertically staggered; the third bottom surface and the lower base surface are vertically staggered; the fourth bottom surface and the lower base surface are vertically staggered.

12. The three-dimensional staggered layout eight-edge turning tool according to claim 2, wherein, One end of the bottom side of the first inclined surface is connected to one end of the first connecting arc, and the front side of the first bottom surface is connected to the other end of the first connecting arc; one end of the bottom side of the second inclined surface is connected to one end of the second connecting arc, and the rear side of the second bottom surface is connected to the other end of the second connecting arc; one end of the top side of the third inclined surface is connected to one end of the third connecting arc, and the left side of the third top surface is connected to the other end of the third connecting arc; one end of the top side of the fourth inclined surface is connected to one end of the fourth connecting arc, and the right side of the fourth top surface is connected to the other end of the fourth connecting arc.

13. The three-dimensional staggered layout eight-edge turning blade according to claim 2, characterized in that, One end of the bottom edge of the first inclined surface is connected to one end of the front side edge of the first bottom surface through the first connecting arc, and the other end of the bottom edge of the first inclined surface is directly connected to the other end of the front side edge of the first bottom surface; one end of the bottom edge of the second inclined surface is connected to one end of the rear side edge of the second bottom surface through the second connecting arc, and the other end of the bottom edge of the second inclined surface is directly connected to the other end of the rear side edge of the second bottom surface; one end of the top edge of the third inclined surface is connected to one end of the left side edge of the third top surface through the third connecting arc, and the other end of the top edge of the third inclined surface is directly connected to the other end of the left side edge of the third top surface; one end of the top edge of the fourth inclined surface is connected to one end of the right side edge of the fourth top surface through the fourth connecting arc, and the other end of the top edge of the fourth inclined surface is directly connected to the other end of the right side edge of the fourth top surface.

14. The three-dimensional staggered layout eight-edge turning blade according to claim 2, wherein A first left chip groove is provided on the first left side surface, and a first right chip groove is provided on the first right side surface; a second left chip groove is provided on the second left side surface, and a second right chip groove is provided on the second right side surface; a third front chip groove is provided on the third front side surface, and a third rear chip groove is provided on the third rear side surface; a fourth front chip groove is provided on the fourth front side surface, and a fourth rear chip groove is provided on the fourth rear side surface.

15. The three-dimensional staggered layout eight-edge turning blade according to claim 1, wherein, The front base surface is connected to the left base surface through a first connecting surface, the front base surface is connected to the right base surface through a second connecting surface, the rear base surface is connected to the left base surface through a third connecting surface, and the rear base surface is connected to the right base surface through a fourth connecting surface.

16. The three-dimensional staggered layout eight-edge turning blade according to claim 2, wherein The first inclined surface is a concave inclined surface that is concave from both left and right sides towards the middle, the second inclined surface is a concave inclined surface that is concave from both left and right sides towards the middle, the third inclined surface is a concave inclined surface that is concave from both front and rear sides towards the middle, the fourth inclined surface is a concave inclined surface that is concave from both front and rear sides towards the middle, the first bottom surface is a concave bottom surface that is concave from both left and right sides towards the middle, the second bottom surface is a concave bottom surface that is concave from both left and right sides towards the middle, the third top surface is a concave top surface that is concave from both front and rear sides towards the middle, and the fourth top surface is a concave top surface that is concave from both front and rear sides towards the middle.

17. A cutting tool assembly, characterized in that, It includes a tool shank and a three-dimensional staggered layout eight-edge turning tool blade according to any one of claims 1 to 16, and the three-dimensional staggered layout eight-edge turning tool blade is installed on the tool shank.

Images