Multi-layer cutting tool

Abstract

The invention discloses a multi-layer cutting tool, and relates to the technical field of lathe tools. A handle is included; the cutter handle disc is arranged on the cutter handle; the cutter head assembly is arranged on the cutter handle disc; the inner cutter assembly is movably arranged in the cutter head assembly; the outer cutter assembly is movably arranged outside the cutter head assembly; the cutterhead assembly comprises an inner cutterhead, a middle cutterhead and an outer cutterhead which are movably sleeved in sequence from inside to outside, and the inner cutterhead is arranged on the cutter handle disc; the inner cutter assembly comprises a plurality of first inner cutters, a plurality of second inner cutters and a plurality of third inner cutters which are arranged on the inner peripheral wall and the outer peripheral wall of the inner cutter disc, the inner peripheral wall and the outer peripheral wall of the middle cutter disc and the inner peripheral wall and the outer peripheral wall of the outer cutter disc respectively. The outer cutter assembly comprises a plurality of first outer cutters, a plurality of second outer cutters and a plurality of third outer cutters, wherein the first outer cutters, the second outer cutters and the third outer cutters are arranged on the outer peripheral wall of the inner cutter disc, the outer peripheral wall of the middle cutter disc and the outer peripheral wall of the outer cutter disc respectively. The multi-layer cutting device has the advantages that multi-layer cutting can be achieved at the same time according to different machining requirements, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lathe tools, and particularly to a multi-layer cutting tool. Background Art

[0002] In the process of metal cutting production and manufacturing, when machining the surface of the same workpiece, most of the existing tools are of a single-layer structure; the machining process needs to be carried out layer by layer progressively, with low production efficiency and time-consuming and laborious processing. Summary of the Invention

[0003] Aiming at the above existing technical deficiencies, the purpose of the present invention is to provide a multi-layer cutting tool, which has the advantages of being able to realize simultaneous multi-layer cutting according to different processing needs and improving production efficiency.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a multi-layer cutting tool, including: A tool shank; A tool shank disk, which is arranged on the tool shank; A tool disk assembly, which is arranged on the tool shank disk; An inner tool assembly, which is movably arranged inside the tool disk assembly; An outer tool assembly, which is movably arranged outside the tool disk assembly; An arc-shaped tool rest, which is arranged on the tool shank; Wherein, the tool disk assembly includes an inner tool disk, an intermediate tool disk and an outer tool disk which are movably sleeved in sequence from inside to outside, and the inner tool disk is arranged on the tool shank disk; The inner tool assembly includes a plurality of first inner cutting tools, a plurality of second inner cutting tools and a plurality of third inner cutting tools which are respectively arranged on the inner and outer peripheral walls of the inner tool disk, the inner and outer peripheral walls of the intermediate tool disk and the inner and outer peripheral walls of the outer tool disk; The outer tool assembly includes a plurality of first outer cutting tools, a plurality of second outer cutting tools and a plurality of third outer cutting tools which are respectively arranged on the outer peripheral walls of the inner tool disk, the outer peripheral walls of the intermediate tool disk and the outer peripheral walls of the outer tool disk.

[0005] Preferably, the inner tool disk, the intermediate tool disk and the outer tool disk are all of an annular body structure, and the outer peripheral wall of the inner tool disk is in contact with the inner peripheral wall of the intermediate tool disk, the outer peripheral wall of the intermediate tool disk is in contact with the inner peripheral wall of the outer tool disk, and a plurality of first locking bolts that movably penetrate through to the intermediate tool disk are arranged on the outer peripheral wall of the outer tool disk, and a plurality of second locking bolts that movably penetrate through to the inner tool disk are arranged on the outer peripheral wall of the intermediate tool disk, which is convenient for adjusting the positions of the inner tool disk, the intermediate tool disk and the outer tool disk according to the use needs.

[0006] Preferably, the tool shank disc has a disc-shaped structure. The tool shank disc is coaxially arranged on the tool shank, and the inner tool disc is coaxially sleeved outside the tool shank disc, which is convenient for installing the tool shank on the machine tool. Thus, the tool shank can drive the tool shank disc, the inner tool disc, the intermediate tool disc and the outer tool disc to rotate to achieve the cutting operation.

[0007] Preferably, a plurality of first inner tool grooves are circumferentially and uniformly distributed on the inner peripheral wall of the inner tool disc near the intermediate tool disc end, and a plurality of second inner tool grooves are circumferentially and uniformly distributed on the outer peripheral wall of the inner tool disc far from the intermediate tool disc end. The first inner cutting tool and the first outer cutting tool are respectively movably arranged in the first inner tool groove and the second inner tool groove; On the outer peripheral wall of the intermediate tool disc near the inner tool disc end, a plurality of first intermediate tool grooves are circumferentially and uniformly distributed. On the inner peripheral wall of the intermediate tool disc near the outer tool disc end, a plurality of second intermediate tool grooves are circumferentially and uniformly distributed. The second outer cutting tool and the second inner cutting tool are respectively movably arranged in the first intermediate tool groove and the second intermediate tool groove; On the inner peripheral wall of the outer tool disc far from the intermediate tool disc end, a plurality of first outer tool grooves are circumferentially and uniformly distributed. On the outer peripheral wall of the outer tool disc near the intermediate tool disc end, a plurality of second outer tool grooves are circumferentially and uniformly distributed. The third inner cutting tool and the third outer cutting tool are respectively movably arranged in the first outer tool groove and the second outer tool groove, which is convenient for respectively installing the first inner cutting tool, the second inner cutting tool and the third inner cutting tool at different positions according to needs so as to achieve different cutting effects.

[0008] Preferably, the number of the first inner tool grooves is the same as that of the second inner tool grooves, and the positions of the first inner tool grooves and the second inner tool grooves correspond to each other one by one; The number of the first intermediate tool grooves is the same as that of the second intermediate tool grooves, and the positions of the first intermediate tool grooves and the second intermediate tool grooves correspond to each other one by one; The number of the first outer tool grooves is the same as that of the second outer tool grooves, and the positions of the first outer tool grooves and the second outer tool grooves correspond to each other one by one, which is convenient for respectively installing the first inner cutting tool, the second inner cutting tool and the third inner cutting tool at different positions according to needs so as to achieve different cutting effects.

[0009] Preferably, internally threaded holes with matching positions are provided on the first inner tool grooves, the second inner tool grooves, the first intermediate tool grooves, the second intermediate tool grooves, the first outer tool grooves and the second outer tool grooves. Countersunk bolts are threadedly connected in the internally threaded holes, and the countersunk bolts are respectively connected to the first inner cutting tool, the first outer cutting tool, the second outer cutting tool, the second inner cutting tool, the third inner cutting tool or the third outer cutting tool at the corresponding positions, which is convenient for fixing the first inner cutting tool, the first outer cutting tool, the second outer cutting tool, the second inner cutting tool, the third inner cutting tool or the third outer cutting tool through the countersunk bolts after installation.

[0010] Preferably, the arc-shaped tool rest includes: A circular tool rest base, which is arranged on the bottom surface of the tool shank disc; Arc-shaped rod seats, there are a plurality of arc-shaped rod seats, and the plurality of arc-shaped rod seats are circumferentially and uniformly distributed along the outer peripheral wall of the circular tool rest base; Tool holder: A tool holder is provided on each arc-shaped rod holder. The tool holder is movably sleeved outside the arc-shaped rod holder. A cutting tool body is provided on the top surface of the tool holder. According to the cutting requirements, the tool holder can be adjusted to different positions on the arc-shaped rod holder to achieve different cutting effects.

[0011] Preferably, the tool holder has a rectangular structure. A rod groove is provided on both the bottom surface and one side surface of the tool holder. The rod groove is adapted to the arc-shaped rod holder, and the arc-shaped rod holder movably penetrates through the rod groove, which is convenient for installing rod grooves at different positions on the tool holder on the arc-shaped rod holder, so as to adjust the position of the cutting tool body after installation to achieve different cutting effects.

[0012] Preferably, at least one locking bolt is provided on each arc-shaped rod holder. The locking bolt movably penetrates through the corresponding tool holder and arc-shaped rod holder, which is convenient for connecting the tool holder and the arc-shaped rod holder.

[0013] Preferably, the locking bolt is a countersunk head bolt to prevent the screw head of the locking bolt from interfering during cutting operations.

[0014] The beneficial effects of the present invention are as follows: 1. According to different needs, when the inner cutting tool 1, inner cutting tool 2, and inner cutting tool 3 are respectively installed in the inner tool groove 1, middle tool groove 2, and outer tool groove 1, the surface of the cylindrical workpiece can be simultaneously multi-layer cut and processed into a stepped structure; when the outer cutting tool 1, outer cutting tool 2, or outer cutting tool 3 is respectively installed in the inner tool groove 2 on the outer peripheral wall of the inner tool disc, the middle tool groove 1 on the outer peripheral wall of the middle tool disc, or the outer tool groove 2 on the outer peripheral wall of the outer tool disc, a circular ring groove can be machined on the outside of the cylindrical workpiece.

[0015] 2. The tool holder can also be slidably adjusted on the arc-shaped rod holder, that is, the cutting tool body is adjusted to different positions on the arc-shaped rod holder, so as to achieve cutting effects of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of a multi-layer cutting tool provided by an embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of the position of the arc-shaped tool rest of a multi-layer cutting tool provided by an embodiment of the present invention.

[0019] Figure 3 Schematic diagram of the inner tool disc structure of a multi-layer cutting tool provided by an embodiment of the present invention.

[0020] Figure 4 Schematic diagram of the intermediate tool disc structure of a multi-layer cutting tool provided by an embodiment of the present invention.

[0021] Figure 5 Schematic diagram of the outer tool disc structure of a multi-layer cutting tool provided by an embodiment of the present invention.

[0022] Figure 6 Schematic diagram of the position of the first inner tool groove of a multi-layer cutting tool provided by an embodiment of the present invention.

[0023] Figure 7 is Figure 6 Enlarged schematic diagram of the structure at position A in

[0024] Figure 8 Schematic diagram of the position of the second intermediate tool groove of a multi-layer cutting tool provided by an embodiment of the present invention.

[0025] Figure 9 Schematic diagram of the position of the first outer tool groove of a multi-layer cutting tool provided by an embodiment of the present invention.

[0026] Figure 10 Schematic diagram of the arc tool holder structure of a multi-layer cutting tool provided by an embodiment of the present invention.

[0027] Figure 11 Schematic diagram of the position of one of the rod grooves of a multi-layer cutting tool provided by an embodiment of the present invention.

[0028] Explanation of reference numerals: 1, tool shank; 2, tool shank disc; 3, tool disc assembly; 31, inner tool disc; 311, first inner tool groove; 312, second inner tool groove; 32, intermediate tool disc; 321, first intermediate tool groove; 322, second intermediate tool groove; 33, outer tool disc; 331, first outer tool groove; 332, second outer tool groove; 4, inner tool assembly; 41, first inner cutting tool; 42, second inner cutting tool; 43, third inner cutting tool; 5, outer tool assembly; 51, first outer cutting tool; 52, second outer cutting tool; 53, third outer cutting tool; 6, arc tool holder; 61, circular tool holder base; 62, arc rod base; 63, tool seat; 631, rod groove; 64, cutting tool body; 7, internal thread hole; 71, countersunk head bolt; 8, locking bolt one; 9, locking bolt two. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1 As Figures 1 to 5 shown, the present invention provides a multi-layer cutting tool, including a tool shank 1; a tool shank disk 2 is arranged on the tool shank 1; a tool disk assembly 3 is arranged on the tool shank disk 2; an inner tool assembly 4 is movably arranged inside the tool disk assembly 3; an outer tool assembly 5 is movably arranged outside the tool disk assembly 3; an arc-shaped tool rest 6 is arranged on the tool shank 1; the tool disk assembly 3 includes an inner tool disk 31, an intermediate tool disk 32 and an outer tool disk 33 that are movably sleeved in sequence from the inside to the outside, and the inner tool disk 31 is arranged on the tool shank disk 2; the inner tool assembly 4 includes a plurality of first inner cutting tools 41, a plurality of second inner cutting tools 42 and a plurality of third inner cutting tools 43 that are respectively arranged on the inner and outer circumferential walls of the inner tool disk 31, the inner and outer circumferential walls of the intermediate tool disk 32 and the inner and outer circumferential walls of the outer tool disk 33; the outer tool assembly 5 includes a plurality of first outer cutting tools 51, a plurality of second outer cutting tools 52 and a plurality of third outer cutting tools 53 that are respectively arranged on the outer circumferential walls of the inner tool disk 31, the outer circumferential walls of the intermediate tool disk 32 and the outer circumferential walls of the outer tool disk 33.

[0031] When a cylindrical workpiece needs to be processed into a stepped structure and before cutting, first install the tool shank 1 on the machine tool, connect the inner tool disk 31, the intermediate tool disk 32 and the outer tool disk 33, so that the inner tool disk 31, the intermediate tool disk 32 and the outer tool disk 33 are distributed in a stepped shape in sequence from the inside to the outside (at this time, the inner tool disk 31 is located at one end close to the tool shank 1, and at the same time, the outer tool disk 33 is located at one end far from the tool shank 1); install the first inner cutting tools 41, the second inner cutting tools 42 and the third inner cutting tools 43 on the inner circumferential walls of the inner tool disk 31, the inner circumferential walls of the intermediate tool disk 32 and the inner circumferential walls of the outer tool disk 33 respectively. The machine tool drives the tool shank 1 to rotate, which can drive the inner tool disk 31, the intermediate tool disk 32 and the outer tool disk 33 to rotate at the same time, so that the cylindrical workpiece is located inside the inner tool disk 31, the intermediate tool disk 32 and the outer tool disk 33, and moves linearly along the axial length direction of the cylindrical workpiece while rotating with the inner tool disk 31, the intermediate tool disk 32 and the outer tool disk 33, so as to realize simultaneous multi-layer cutting of the surface of the cylindrical workpiece and complete the stepped processing (that is, the diameter after cutting by the inner tool disk 31 is the smallest, the diameter after cutting by the intermediate tool disk 32 is the second, and the diameter after cutting by the outer tool disk 33 is the largest); according to the different heights of the cylindrical workpiece processed into a stepped shape (that is, the heights of each stepped shaft are different), inner tool disks 31, intermediate tool disks 32 and outer tool disks 33 with corresponding lengths can be used adaptively.

[0032] When machining a groove on the outside of a cylindrical workpiece (the cylindrical workpiece rotates around its own axis during cutting), the first external cutting tool 51, the second external cutting tool 52 or the third external cutting tool 53 can also be installed on the outer peripheral wall of the inner cutter disc 31, the outer peripheral wall of the middle cutter disc 32 or the outer peripheral wall of the outer cutter disc 33 respectively. The machine tool drives the inner cutter disc 31, the middle cutter disc 32 or the outer cutter disc 33 to rotate, and then a circular groove structure can be cut on the outer peripheral wall of the cylindrical workpiece through the first external cutting tool 51, the second external cutting tool 52 or the third external cutting tool 53.

[0033] Embodiment 2 Based on Embodiment 1, as Figures 3 to 9 shown, the inner cutter disc 31, the middle cutter disc 32 and the outer cutter disc 33 are all in the shape of a toroid. The outer peripheral wall of the inner cutter disc 31 is in contact with the inner peripheral wall of the middle cutter disc 32, the outer peripheral wall of the middle cutter disc 32 is in contact with the inner peripheral wall of the outer cutter disc 33. A plurality of locking bolts 8 that penetrate through to the middle cutter disc 32 are movably arranged on the outer peripheral wall of the outer cutter disc 33, and a plurality of locking bolts 9 that penetrate through to the inner cutter disc 31 are movably arranged on the outer peripheral wall of the middle cutter disc 32; the tool holder disc 2 is in the shape of a disc, the tool holder disc 2 is coaxially arranged on the tool holder 1, and the inner cutter disc 31 is coaxially sleeved outside the tool holder disc 2; a plurality of first inner cutter grooves 311 are circumferentially and evenly distributed on the inner peripheral wall of the inner cutter disc 31 near the middle cutter disc 32, and a plurality of second inner cutter grooves 312 are circumferentially and evenly distributed on the outer peripheral wall of the inner cutter disc 31 away from the middle cutter disc 32. The first inner cutting tool 41 and the first external cutting tool 51 are respectively movably arranged in the first inner cutter grooves 311 and the second inner cutter grooves 312; a plurality of first middle cutter grooves 321 are circumferentially and evenly distributed on the outer peripheral wall of the middle cutter disc 32 near the inner cutter disc 31, and a plurality of second middle cutter grooves 322 are circumferentially and evenly distributed on the inner peripheral wall of the middle cutter disc 32 near the outer cutter disc 33. The second external cutting tool 52 and the second inner cutting tool 42 are respectively movably arranged in the first middle cutter grooves 321 and the second middle cutter grooves 322; a plurality of first outer cutter grooves 331 are circumferentially and evenly distributed on the inner peripheral wall of the outer cutter disc 33 away from the middle cutter disc 32, and a plurality of second outer cutter grooves 332 are circumferentially and evenly distributed on the outer peripheral wall of the outer cutter disc 33 near the middle cutter disc 32. The third inner cutting tool 43 and the third external cutting tool 53 are respectively movably arranged in the first outer cutter grooves 331 and the second outer cutter grooves 332.

[0034] When a cylindrical workpiece needs to be processed into a stepped structure, and before cutting, the tool holder 1 is first installed on the machine tool. According to the usage requirements, the positions between the inner cutter disc 31, the middle cutter disc 32, and the outer cutter disc 33 are adjusted, or it is convenient to connect the inner cutter disc 31 and the middle cutter disc 32 for combined use according to the needs, or connect the middle cutter disc 32 and the outer cutter disc 33 for combined use (that is, the first locking bolt 8 can penetrate through the outer cutter disc 33 and the middle cutter disc 32 for connection, and the second locking bolt 9 can penetrate through the middle cutter disc 32 and the inner cutter disc 31 for connection). The machine tool drives the tool holder 1, the tool holder disc 2, the inner cutter disc 31, the middle cutter disc 32, and the outer cutter disc 33 to rotate simultaneously to realize the cutting operation, so that different stepped structures can be cut on the outer peripheral wall of the cylindrical workpiece.

[0035] According to different cutting requirements, the first inner cutting tool 41 can also be installed in the first inner cutter groove 311 on the inner peripheral wall of the inner cutter disc 31 (or the first outer cutting tool 51 can be installed in the second inner cutter groove 312 on the outer peripheral wall of the inner cutter disc 31); or the second inner cutting tool 42 can be installed in the second middle cutter groove 322 on the inner peripheral wall of the middle cutter disc 32 (or the second outer cutting tool 52 can be installed in the first middle cutter groove 321 on the outer peripheral wall of the middle cutter disc 32); or the third inner cutting tool 43 can be installed in the first outer cutter groove 331 on the inner peripheral wall of the outer cutter disc 33 (or the third outer cutting tool 53 can be installed in the second outer cutter groove 332 on the outer peripheral wall of the outer cutter disc 33); that is, when a cylindrical workpiece needs to be processed into a stepped structure, the first inner cutting tool 41, the second inner cutting tool 42, and the third inner cutting tool 43 are respectively installed in the first inner cutter groove 311 on the inner peripheral wall of the inner cutter disc 31, the second middle cutter groove 322 on the inner peripheral wall of the middle cutter disc 32, and the first outer cutter groove 331 on the inner peripheral wall of the outer cutter disc 33, and then the stepped processing of the cylindrical workpiece can be completed.

[0036] When an annular groove needs to be machined on the outside of a cylindrical workpiece, the first outer cutting tool 51, the second outer cutting tool 52, or the third outer cutting tool 53 can be respectively installed in the second inner cutter groove 312 on the outer peripheral wall of the inner cutter disc 31, or the first middle cutter groove 321 on the outer peripheral wall of the middle cutter disc 32, or the second outer cutter groove 332 on the outer peripheral wall of the outer cutter disc 33. Then, the first outer cutting tool 51, the second outer cutting tool 52, or the third outer cutting tool 53 can be used to cut an annular groove structure on the outer peripheral wall of the cylindrical workpiece; and when using the first outer cutting tool 51, the middle cutter disc 32 and the outer cutter disc 33 need to be disassembled simultaneously to prevent interference between the middle cutter disc 32 and the outer cutter disc 33 and the workpiece; when using the third outer cutting tool 53, the middle cutter disc 32 and the inner cutter disc 31 do not need to be disassembled; when using the second outer cutting tool 52, the outer cutter disc 33 needs to be disassembled to prevent interference between the outer cutter disc 33 and the workpiece.

[0037] The number of the first inner tool grooves 311 is the same as that of the second inner tool grooves 312, and the positions of the first inner tool grooves 311 correspond to those of the second inner tool grooves 312 one by one; the number of the first middle tool grooves 321 is the same as that of the second middle tool grooves 322, and the positions of the first middle tool grooves 321 correspond to those of the second middle tool grooves 322 one by one; the number of the first outer tool grooves 331 is the same as that of the second outer tool grooves 332, and the positions of the first outer tool grooves 331 correspond to those of the second outer tool grooves 332 one by one; when machining a cylindrical workpiece into a stepped structure or machining a groove on the outside of a cylindrical workpiece, it is convenient to install the same number of the first outer cutting tools 51, the second outer cutting tools 52 and the third outer cutting tools 53 at the same time, which is beneficial to keeping the cutting stable during the cutting process and improving the quality after cutting.

[0038] Inner threaded holes 7 with adapted positions are arranged on the first inner tool grooves 311, the second inner tool grooves 312, the first middle tool grooves 321, the second middle tool grooves 322, the first outer tool grooves 331 and the second outer tool grooves 332. Countersunk head bolts 71 are threadedly connected inside the inner threaded holes 7, and the countersunk head bolts 71 are respectively connected with the first inner cutting tool 41, the first outer cutting tool 51, the second outer cutting tool 52, the second inner cutting tool 42, the third inner cutting tool 43 or the third outer cutting tool 53 at corresponding positions; it is convenient to fix the first inner cutting tool 41, the first outer cutting tool 51, the second outer cutting tool 52, the second inner cutting tool 42, the third inner cutting tool 43 or the third outer cutting tool 53 respectively through the countersunk head bolts 71, and at the same time, it can prevent the bolt heads of the countersunk head bolts 71 from interfering with the workpiece during the cutting process.

[0039] Embodiment 3 On the basis of Embodiment 1, as Figures 1 to 2 、 Figures 10 to 11 shown, the arc tool rest 6 includes a circular tool rest base 61, and the circular tool rest base 61 is arranged on the bottom surface of the tool handle disc 2; a plurality of arc rod seats 62 are provided, and the plurality of arc rod seats 62 are evenly distributed along the outer peripheral wall of the circular tool rest base 61; a tool rest 63, and one tool rest 63 is arranged on each arc rod seat 62. The tool rest 63 is movably sleeved outside the arc rod seat 62, and a cutting tool body 64 is arranged on the top surface of the tool rest 63; the tool rest 63 is of a rectangular structure, and a rod groove 631 is arranged on the bottom surface and one side surface of the tool rest 63. The rod groove 631 is adapted to the arc rod seat 62, and the arc rod seat 62 movably penetrates through the rod groove 631.

[0040] When it is necessary to cut a cylindrical shaft body with a large diameter into a cylindrical shaft body with a small diameter, the tool holder 63 can be installed on the arc-shaped rod seat 62 according to the diameter size after cutting (at this time, the intermediate cutter disc 32 and the outer cutter disc 33 are not installed; at the same time, since the inner cutter disc 31 is arranged on the tool handle disc 2, the diameter of the circular tool rest seat 61 can be equal to the diameter of the tool handle disc 2, and the height of the tool holder 63 is equal to or greater than the thickness of the tool handle disc 2, so that when the tool holder 63 is installed on the arc-shaped rod seat 62 and the cutting tool body 64 is used for cutting, the tool handle disc 2 will not interfere with the cutting tool body 64), and the machine tool drives the tool handle 1 to rotate, and the workpiece can be cut through the cutting tool body 64; since a rod groove 631 is provided on both the bottom surface and one side surface of the tool holder 63, when the arc-shaped rod seat 62 is connected to the rod grooves 631 at different positions, the angle between the cutting tool body 64 and the arc-shaped rod seat 62 can be different, so that different cutting effects on the workpiece can be achieved; the tool holder 63 can also be slidably adjusted on the arc-shaped rod seat 62 (that is, the cutting tool bodies 64 on each arc-shaped rod seat 62 can be adjusted to different positions, so that different cutting effects can be achieved: that is, when the cutting tool body 64 is closer to the circular tool rest seat 61 on the arc-shaped rod seat 62, the machine tool drives the tool handle 1 to rotate, and the diameter of the circular trajectory formed by the rotation of the outer cutting tool body 64 can be smaller; on the contrary, the diameter of the circular trajectory formed by the rotation of the cutting tool body 64 is larger).

[0041] At least one locking bolt is provided on each arc-shaped rod seat 62, and the locking bolt movably penetrates through the corresponding tool holder 63 and the arc-shaped rod seat 62; it is convenient to fix the tool holder 63 by the locking bolt after the position of the tool holder 63 is slidably adjusted on the arc-shaped rod seat 62; the locking bolt is a countersunk head bolt to prevent the screw head of the locking bolt from interfering during the cutting operation.

[0042] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A multi-layer cutting tool, characterized in that, Comprising: A tool handle (1); A tool handle plate (2) which is arranged on the tool handle (1); A tool disc assembly (3) which is arranged on the tool handle plate (2); An inner tool assembly (4) which is movably arranged inside the tool disc assembly (3); An outer tool assembly (5) which is movably arranged outside the tool disc assembly (3); A curved tool rest (6) which is arranged on the tool handle (1); Wherein, the tool disc assembly (3) includes an inner tool disc (31), an intermediate tool disc (32) and an outer tool disc (33) which are movably sleeved in sequence from inside to outside, and the inner tool disc (31) is arranged on the tool handle plate (2); The inner tool assembly (4) includes a plurality of first inner cutting tools (41), a plurality of second inner cutting tools (42) and a plurality of third inner cutting tools (43) which are respectively arranged on the inner and outer peripheral walls of the inner tool disc (31), the inner and outer peripheral walls of the intermediate tool disc (32) and the inner and outer peripheral walls of the outer tool disc (33); The outer tool assembly (5) includes a plurality of first outer cutting tools (51), a plurality of second outer cutting tools (52) and a plurality of third outer cutting tools (53) which are respectively arranged on the outer peripheral walls of the inner tool disc (31), the outer peripheral walls of the intermediate tool disc (32) and the outer peripheral walls of the outer tool disc (33).

2. A multi-layer cutting tool according to claim 1, characterized in that, The inner tool disc (31), the intermediate tool disc (32) and the outer tool disc (33) are all in an annular body structure, and the outer peripheral wall of the inner tool disc (31) is in contact with the inner peripheral wall of the intermediate tool disc (32), the outer peripheral wall of the intermediate tool disc (32) is in contact with the inner peripheral wall of the outer tool disc (33), and a plurality of first locking bolts (8) which movably penetrate through to the intermediate tool disc (32) are arranged on the outer peripheral wall of the outer tool disc (33), and a plurality of second locking bolts (9) which movably penetrate through to the inner tool disc (31) are arranged on the outer peripheral wall of the intermediate tool disc (32).

3. A multi-layer cutting tool according to claim 2, wherein, The tool handle plate (2) is in a disc-shaped structure, the tool handle plate (2) is coaxially arranged on the tool handle (1), and the inner tool disc (31) is coaxially sleeved outside the tool handle plate (2).

4. A multi-layer cutting tool according to claim 2, wherein, A plurality of first inner tool grooves (311) are circumferentially and uniformly distributed on the inner peripheral wall of the inner tool disc (31) near the intermediate tool disc (32) end, a plurality of second inner tool grooves (312) are circumferentially and uniformly distributed on the outer peripheral wall of the inner tool disc (31) far from the intermediate tool disc (32) end, and the first inner cutting tool (41) and the first outer cutting tool (51) are respectively movably arranged in the first inner tool grooves (311) and the second inner tool grooves (312); A plurality of first intermediate tool grooves (321) are circumferentially and uniformly distributed on the outer peripheral wall of the intermediate tool disc (32) near the inner tool disc (31) end, a plurality of second intermediate tool grooves (322) are circumferentially and uniformly distributed on the inner peripheral wall of the intermediate tool disc (32) near the outer tool disc (33) end, and the second outer cutting tool (52) and the second inner cutting tool (42) are respectively movably arranged in the first intermediate tool grooves (321) and the second intermediate tool grooves (322); A plurality of first outer tool grooves (331) are circumferentially and uniformly distributed on the inner peripheral wall of the outer tool disc (33) far from the intermediate tool disc (32) end, a plurality of second outer tool grooves (332) are circumferentially and uniformly distributed on the outer peripheral wall of the outer tool disc (33) near the intermediate tool disc (32) end, and the third inner cutting tool (43) and the third outer cutting tool (53) are respectively movably arranged in the first outer tool grooves (331) and the second outer tool grooves (332).

5. A multi-layer cutting tool according to claim 4, characterized in that, The number of the inner tool slots one (311) is the same as that of the inner tool slots two (312), and the positions of the inner tool slots one (311) correspond to those of the inner tool slots two (312) one by one; the number of the middle tool slots one (321) is the same as that of the middle tool slots two (322), and the positions of the middle tool slots one (321) correspond to those of the middle tool slots two (322) one by one; the number of the outer tool slots one (331) is the same as that of the outer tool slots two (332), and the positions of the outer tool slots one (331) correspond to those of the outer tool slots two (332) one by one.

6. The multi-layer cutting tool according to claim 5, characterized in that, Inner threaded holes (7) with adapted positions are provided on the inner tool slots one (311), inner tool slots two (312), middle tool slots one (321), middle tool slots two (322), outer tool slots one (331) and outer tool slots two (332). Countersunk head bolts (71) are threadedly connected in the inner threaded holes (7), and the countersunk head bolts (71) are respectively connected to the inner cutting tool one (41), outer cutting tool one (51), outer cutting tool two (52), inner cutting tool two (42), inner cutting tool three (43) or outer cutting tool three (53) at the corresponding positions.

7. A multi-layer cutting tool according to claim 1, characterized in that, The arc-shaped tool rest (6) includes: A circular tool rest base (61), and the circular tool rest base (61) is arranged on the bottom surface of the tool handle disc (2); Arc-shaped rod bases (62), there are multiple arc-shaped rod bases (62), and the multiple arc-shaped rod bases (62) are evenly distributed along the outer peripheral wall of the circular tool rest base (61); Tool seats (63), one tool seat (63) is arranged on each arc-shaped rod base (62), the tool seat (63) is movably sleeved outside the arc-shaped rod base (62), and a cutting tool body (64) is arranged on the top surface of the tool seat (63).

8. A multi-layer cutting tool according to claim 7, characterized in that, The tool seat (63) is of a rectangular structure, and a rod slot (631) is arranged on both the bottom surface and one side surface of the tool seat (63). The rod slot (631) is adapted to the arc-shaped rod base (62), and the arc-shaped rod base (62) movably penetrates through the rod slot (631).

9. A multi-layer cutting tool according to claim 8, characterized in that, At least one locking bolt is arranged on each arc-shaped rod base (62), and the locking bolt movably penetrates through the corresponding tool seat (63) and arc-shaped rod base (62).

10. A multi-layer cutting tool according to claim 9, characterized in that, The locking bolt is a countersunk head bolt.

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