Ultrasonic direction-variable cutter and adjusting device thereof

Abstract

The invention belongs to the technical field of ultrasonic cutters, and particularly relates to an ultrasonic direction-variable cutter and an adjusting device thereof. The ultrasonic direction-variable cutter comprises a cutter holder shell, a cutter module, an ultrasonic vibration assembly and a rotary driving assembly; the cutter module is movably arranged in the cutter holder shell, and the bottom of the cutter module extends out of the bottom of the cutter holder shell; the ultrasonic vibration assembly is arranged at the top of the tool apron shell and is in transmission connection with the tool module; the rotary driving assembly is arranged in the tool apron shell, and the rotary driving assembly is in transmission connection with the tool module; an elastic cavity is formed between the lower portion of the rotary driving assembly and the bottom of the tool apron shell. When the cutter is used for cutting, the resistance is smaller, adhesive stickers are not prone to being adhered to the cutter, when the cutting direction is changed, the rotary driving assembly is powered on to change the direction of the cutter, the cutting edge is made to face the cutting advancing direction all the time, and the risk of cutter folding during high-speed steering is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of ultrasonic cutters, and in particular relates to an ultrasonic variable-direction cutter and an adjusting device thereof. Background Art

[0002] Traditional cutting knife tools usually include a handle, a blade and a drive motor. The blade is installed on the handle, and the handle is driven by the motor to rotate or reciprocate to achieve the function of cutting materials. However, this cutting method is prone to problems such as large cutting resistance and material adhesion when cutting sticky materials (such as self-adhesive stickers). In order to reduce the resistance during cutting, there is also a solution to apply ultrasonic technology to the tool to form an ultrasonic cutting tool. The principle is to generate high-frequency vibrations through an ultrasonic generator, convert electrical energy into mechanical energy, and make the tool generate tiny mechanical vibrations during the cutting process. Through this tiny vibration, the surface of the cut material is broken, which can reduce the cutting resistance, thereby achieving efficient, precise and low thermal damage cutting effects.

[0003] However, the existing technology still has some limitations: the existing ultrasonic cutter is prone to the risk of breaking the blade when changing the cutting direction, especially when turning at high speed; and the blade tip extension distance is mostly adjusted at the top, the structure is complex, and the wire arrangement is inconvenient. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides an ultrasonic variable-direction tool and an adjustment device thereof to solve the problem that the existing ultrasonic tools are prone to the risk of breaking the tool when changing the cutting direction, especially when turning at high speed; and the tool tip extension distance is mostly adjusted by the upper end, the structure is complex, and the wire arrangement is inconvenient.

[0005] One solution of the present invention provides an ultrasonic variable-direction tool, comprising: a tool holder housing, a tool module, an ultrasonic vibration component and a rotation drive component;

[0006] The tool module is movably disposed inside the tool holder housing, and the bottom of the tool module extends out of the bottom of the tool holder housing;

[0007] The ultrasonic vibration component is arranged on the top of the tool holder housing, and the ultrasonic vibration component is in transmission connection with the tool module, so that the ultrasonic vibration component drives the tool module to vibrate up and down when in operation;

[0008] The rotary drive assembly is disposed inside the tool holder housing, and the rotary drive assembly is in transmission connection with the tool module, so as to drive the tool module to adjust the cutting direction when the rotary drive assembly is in operation;

[0009] An elastic cavity is formed below the rotary drive assembly and at the bottom of the knife seat housing.

[0010] In one of the schemes of the present invention, the ultrasonic vibration assembly includes a fixing nut cover, an ultrasonic crystal and an ejector pin cover;

[0011] The fixing nut cover is fixedly arranged on the top of the ultrasonic crystal, and the fixing nut cover is threadedly connected to the top of the knife seat housing to close the top opening of the knife seat housing;

[0012] The ejector cover is fixedly arranged on the bottom of the ultrasonic crystal, and the ejector cover abuts against the tool module.

[0013] In one of the solutions of the present invention, the fixing nut cover is provided with a connection port for leading out a power supply wire;

[0014] Wherein, the power supply wires at least include the power supply wire harnesses of the ultrasonic crystal and the rotation drive assembly; and / or, the connection port is also used to lead out a control line of the connection port.

[0015] In one embodiment of the present invention, the rotary drive assembly includes a movable sleeve and an internal coil and a coil circuit board disposed in the movable sleeve;

[0016] The bottom of the movable sleeve is provided with a bottom support plate for fixed connection, the upper surface of the bottom support plate is provided with a bearing for fixed connection, the bottom support plate is coaxially movably arranged with the tool module through the bearing; the lower surface of the bottom support plate is in contact with the elastic member;

[0017] The coil circuit board is arranged above the bearing, the internal coil is fixedly arranged on the coil circuit board, and the internal coil and the tool module are coaxially slidably arranged.

[0018] In one of the schemes of the present invention, at least two slide grooves are provided on the outer side of the movable sleeve, and a plurality of rolling bodies are provided in the slide grooves. The rolling bodies abut against the inner wall surface of the tool holder shell to enable the movable sleeve to slide up and down parallel to the tool holder shell.

[0019] In one solution of the present invention, the tool module is provided with a magnetic member corresponding to the internal coil, and the tool module is elastically and tightly matched with the magnetic member through a rubber member;

[0020] Wherein, the magnetic part is located above the internal coil, and the magnetic part is coaxial with the internal coil. The internal coil is used to drive the tool module to rotate through the magnetic part after power is turned on, so that the tool module faces the cutting direction.

[0021] In one embodiment of the present invention, the magnetic member comprises dispersedly arranged neodymium magnets;

[0022] And / or, the tool module is configured to be detachably connected to the tool holder housing for replacing the blade in the tool module after releasing the connection between the ultrasonic vibration component, the rotary drive component and the tool module.

[0023] In one of the solutions of the present invention, a Hall sensor is further provided on the coil circuit board, and the Hall sensor faces the tool module and is used to detect the rotation angle of the tool module;

[0024] And / or, a flange ring is further provided on the outer side of the tool holder shell, and the flange ring is used to quickly connect the tool holder shell to the tool support.

[0025] In one of the solutions of the present invention, an elastic member is disposed in the elastic cavity, and the elastic member is configured to adjust the up and down vibration amplitude of the tool module.

[0026] In one of the schemes of the present invention, an adjustment device can be used for the ultrasonic variable-direction tool described in any one of the above-mentioned multiple schemes, including a knife depth adjustment piece, the outer side of the knife depth adjustment piece is provided with a thread, the knife depth adjustment piece thread is arranged on the bottom of the knife seat shell, the knife depth adjustment piece is provided with a through hole, and the tool module passes through the knife depth adjustment piece from the through hole.

[0027] The ultrasonic variable-direction tool and the adjusting device thereof provided by the present invention can achieve the following technical effects:

[0028] 1. The ultrasonic variable-direction tool of the present invention introduces ultrasonic vibration through an ultrasonic vibration component, which significantly improves the cutting efficiency and reliability. The ultrasonic vibration can significantly reduce the friction between the blade and the material, reduce the cutting resistance, and make the cutting process smoother; at the same time, the high-frequency vibration generated by the ultrasonic vibration can prevent materials (such as adhesives) from adhering to the blade, keep the blade clean and sharp, and further improve the cutting quality.

[0029] 2. The ultrasonic variable-direction tool of the present invention introduces a tool direction adjustment structure through a rotary drive assembly. When the cutting direction needs to be changed, the internal coil is energized to actively adjust the direction of the tool so that the blade always faces the cutting direction. This active adjustment mechanism not only avoids the risk of knife breakage that may occur when traditional tools turn at high speed, but also ensures the continuity and stability of the cutting process, thereby improving the reliability and safety of cutting.

[0030] 3. In the present invention, the integrated fixing structure of the fixing nut cover, ultrasonic crystal and ejector pin cover makes the ultrasonic vibration assembly an independent and compact module. When maintenance or replacement is required, the fixing nut cover only needs to be unscrewed from the knife holder housing to easily remove the entire ultrasonic vibration assembly, thus avoiding the tedious process of disassembling multiple parts in the traditional structure, greatly simplifying the maintenance and replacement steps, and saving time and labor costs.

[0031] 4. In the present invention, multiple functional components are integrated together, such as the integrated fixed structure of the internal coil, coil circuit board, bearing, bottom support plate and movable sleeve, which reduces the overall space occupancy and makes the entire tool device lighter. The coaxial design of the internal coil and the coil circuit board, combined with the movable setting of the bottom support plate and the bearing, ensures that the up and down sliding process of the tool module is smooth and has good rotational stability. At the same time, the sliding groove and rolling body design on the outside of the movable sleeve enable the movable sleeve to slide up and down parallel to the tool holder housing, reducing the friction loss between the mechanical components. Therefore, the rotary drive assembly of the present invention has a simple structure and light weight, and only needs to be set up a smaller movable cavity inside the tool, while reducing the burden on the ultrasonic vibration assembly, thereby utilizing very small ultrasonic crystal power to achieve efficient cutting effects.

[0032] 5. The connection port provided on the fixed nut cover of the present invention leads the wire out from the upper end of the ultrasonic vibration component, thereby avoiding the interference between the wire and the adjustment mechanism in the traditional upper end adjustment method; and a through hole is provided inside the knife depth adjustment member, and the tool module passes through the knife depth adjustment member from the through hole, thereby ensuring the stability of the tool module and allowing the extension distance of the knife tip relative to the knife depth adjustment member to be changed by moving the adjustment member up and down, thereby achieving different cutting depth effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1 A schematic diagram showing the internal structure of a tool module of the present invention;

[0035] Figure 2 A schematic diagram showing the three-dimensional structure of the tool module of the present invention;

[0036] Figure 3 express Figure 2 Schematic diagram of the cross-sectional structure in the AA direction;

[0037] Figure 4 A schematic diagram showing the structures of the ultrasonic vibration component and the rotation drive component of the present invention.

[0038] The following are the descriptions of the reference numerals:

[0039] 10-tool holder housing; 20-tool module; 30-ultrasonic vibration assembly; 31-fixed nut cover; 32-ultrasonic crystal; 33-thimble cover; 40-rotation drive assembly; 41-movable sleeve; 42-internal coil; 43-coil circuit board; 44-bottom support plate; 45-bearing; 46-rolling element; 47-magnetic part; 50-elastic cavity; 60-flange ring; 70-tool depth adjustment assembly. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Please refer to Figure 1-Figure 4 One embodiment of the present invention provides an ultrasonic variable-direction tool, comprising: a tool holder housing 10, a tool module 20, an ultrasonic vibration component 30 and a rotation drive component 40;

[0042] The tool module 20 is movably disposed inside the tool holder housing 10, and the bottom of the tool module 20 extends out of the bottom of the tool holder housing 10;

[0043] The ultrasonic vibration component 30 is disposed on the top of the tool holder housing 10, and the ultrasonic vibration component 30 is in transmission connection with the tool module 20, so that when the ultrasonic vibration component 30 is in operation, it drives the tool module 20 to vibrate up and down;

[0044] The rotary drive assembly 40 is disposed inside the tool holder housing 10, and the rotary drive assembly 40 is in transmission connection with the tool module 20, so as to drive the tool module 20 to adjust the cutting direction when the rotary drive assembly 40 is running;

[0045] An elastic cavity 50 is formed below the rotary drive assembly 40 and at the bottom of the tool holder housing 10 .

[0046] It can be understood that in the present embodiment, the rotary drive component 40 generates a rotating magnetic field after the driving current is applied, and the tool module 20 generates a fast-response rotation under the action of the rotating magnetic field, so that the cutting direction line of sight of the tool module 20 can be quickly adjusted; and, an active cavity with a certain gap is formed between the rotary drive component 40 and the tool holder housing 10, and when the ultrasonic crystal driving voltage is applied to the ultrasonic vibration component 30, when the ultrasonic crystal 32 in the ultrasonic vibration component 30 begins to vibrate, the vibration is transmitted to the tool module 20 through the pin cover 33, and the tool module 20 begins to push against the rotary drive component 40 and begins to vibrate up and down at high speed.

[0047] Therefore, the ultrasonic variable-direction tool of this embodiment can be used to achieve the following technical effects:

[0048] 1. The introduction of ultrasonic vibration significantly improves cutting efficiency and reliability. Ultrasonic vibration can significantly reduce the friction between the blade and the material, reduce cutting resistance, and make the cutting process smoother. At the same time, the high-frequency vibration generated by ultrasonic vibration can prevent materials (such as adhesives) from adhering to the blade, keep the blade clean and sharp, and further improve the cutting quality.

[0049] 2. The tool direction adjustment structure is introduced. When the cutting direction needs to be changed, the internal coil 42 is energized to actively adjust the direction of the tool so that the blade is always facing the cutting direction. This active adjustment mechanism not only avoids the risk of traditional tools breaking when turning at high speed, but also ensures the continuity and stability of the cutting process, thereby improving the reliability and safety of cutting.

[0050] Please refer to Figure 1 and Figure 3 and Figure 4 In one embodiment of the present invention, the ultrasonic vibration assembly 30 includes a fixing nut cover 31, an ultrasonic crystal 32 and an ejector pin cover 33;

[0051] The fixing nut cover 31 is fixedly disposed on the top of the ultrasonic crystal 32, and the fixing nut cover 31 is threadedly connected to the top of the knife seat housing 10 to close the top opening of the knife seat housing 10;

[0052] The ejector cover 33 is fixedly disposed on the bottom of the ultrasonic crystal 32 , and the ejector cover 33 abuts against the tool module 20 .

[0053] It can be understood that in this embodiment, the ultrasonic variable-direction tool can be used to achieve the following technical effects:

[0054] 1. The integrated fixing structure of the fixing nut cover 31, the ultrasonic crystal 32 and the ejector pin cover 33 makes the ultrasonic vibration assembly an independent and compact module. When maintenance or replacement is required, the fixing nut cover 31 only needs to be unscrewed from the knife holder housing 10 to easily remove the entire ultrasonic vibration assembly 30, thus avoiding the tedious process of disassembling multiple components in the traditional structure, greatly simplifying the maintenance and replacement steps, and saving time and labor costs.

[0055] In one embodiment of the present invention, the fixing nut cover 31 is provided with a connection port (not shown) for leading out a power supply wire (not shown);

[0056] The power supply wires at least include the power supply wire harnesses of the ultrasonic crystal 32 and the rotation drive assembly 40; and / or, the connection port is also used to lead out a control line of the connection port.

[0057] It can be understood that in this embodiment, the power supply harness is used to provide ultrasonic crystal driving voltage for the ultrasonic crystal 32 and pass driving current to the rotation drive component 40; the control line is used to input action instructions to the rotation drive component 40 or collect action data.

[0058] The ultrasonic variable-direction tool of this embodiment can be used to lead the wire out from the upper end of the ultrasonic vibration component 30 through the connection port provided on the fixed nut cover 31, thereby avoiding the interference between the wire and the adjustment mechanism in the traditional upper end adjustment method.

[0059] In one embodiment of the present invention, the rotation drive assembly 40 includes a movable sleeve 41 and an internal coil 42 and a coil circuit board 43 disposed in the movable sleeve 41;

[0060] The bottom of the movable sleeve 41 is provided with a bottom support plate 44 for fixed connection, the upper surface of the bottom support plate 44 is provided with a bearing 45 for fixed connection, the bottom support plate 44 is coaxially movable with the tool module 20 through the bearing 45; the lower surface of the bottom support plate 44 abuts against the elastic member;

[0061] The coil circuit board 43 is disposed above the bearing 45 , the internal coil 42 is fixedly disposed on the coil circuit board 43 , and the internal coil 42 and the tool module 20 are coaxially slidably disposed.

[0062] It can be understood that the ultrasonic variable tool of this embodiment reduces the overall space occupancy through the integrated fixed structure of the internal coil 42, coil circuit board 43, bearing 45, bottom support plate 44 and movable sleeve 41, making the entire tool device lighter, and through the coaxial design of the internal coil 42 and the coil circuit board 43, combined with the movable setting of the bottom support plate 44 and the bearing 45, it ensures that the up and down sliding process of the tool module 20 is smooth and has good rotation stability.

[0063] In one embodiment of the present invention, at least two slide grooves are further provided on the outer side of the movable sleeve 41 (not shown in the figure, the slide grooves can be set as vertical grooves), and a plurality of rolling bodies 46 are provided in the slide grooves. The rolling bodies 46 abut against the inner wall surface of the tool holder shell 10 so that the movable sleeve 41 can slide up and down parallel to the tool holder shell 10.

[0064] It can be understood that in this embodiment, the design of the sliding groove and rolling body 46 on the outside of the movable sleeve 41 allows the movable sleeve 41 to slide up and down parallel to the tool holder housing 10, thereby reducing the friction loss between the mechanical parts; therefore, the rotary drive assembly 40 of the present invention has a simple structure and a light weight, and only requires a smaller movable cavity to be set inside the tool, while reducing the burden on the ultrasonic vibration assembly 30, thereby utilizing a very small ultrasonic crystal 32 power to achieve an efficient cutting effect.

[0065] In one embodiment of the present invention, the tool module 20 is provided with a magnetic member 47 corresponding to the internal coil 42, and the tool module 20 is elastically and tightly matched with the magnetic member 47 through a rubber member;

[0066] Among them, the magnetic part 47 is located above the internal coil 42, and the magnetic part 47 is coaxial with the internal coil 42. The internal coil 42 is used to drive the tool module 20 to rotate through the magnetic part 47 after power is turned on, so that the tool module 20 is facing the cutting direction.

[0067] It can be understood that the coaxial design ensures that the magnetic field generated by the internal coil 42 when energized is precisely aligned with the magnetic member 47, so that the tool module 20 can efficiently respond to changes in the magnetic field and achieve precise rotational drive; and the elastic tight fit ensures that the connection between the tool module 20 and the magnetic member 47 is stable, and a reliable connection can be maintained even under high-frequency vibration;

[0068] In this embodiment, by controlling the current direction and strength of the internal coil 42, the rotation direction of the tool module 20 can be actively adjusted to ensure that the blade is always facing the cutting direction, thereby avoiding the risk of the traditional tool breaking when turning at high speed.

[0069] In one embodiment of the present invention, the magnetic member 47 includes dispersedly arranged neodymium magnets.

[0070] In one of the scenarios of this embodiment, the internal coil 42 adopts a three-phase coil. The structure of the three-phase coil makes the magnetic field distribution more uniform, reducing the vibration and noise caused by the uneven magnetic field; and the three-phase coil serves as a stator to generate a magnetic field after power is turned on; the magnetic part 47 is a mover, and the magnetic part 47 rotates under the action of the magnetic field, thereby driving the tool module 20 to rotate, thereby adjusting the cutting direction of the tool module 20; wherein, the rubidium magnet has a high magnetic energy density, and the dispersed arrangement can ensure uniform distribution of the magnetic field, further optimize the coupling effect between the magnetic field and the tool module 20, and achieve fast and stable rotation.

[0071] Therefore, in this embodiment, when the cutting direction changes, the internal coil 42 is energized to actively change the direction of the tool so that the blade is always facing the cutting direction, avoiding the risk of knife breakage during high-speed turning and providing a more reliable cutting effect.

[0072] In one embodiment of the present invention, the tool module 20 is configured to be detachably connected to the tool holder housing 10, so as to replace the blade in the tool module 20 after releasing the connection between the ultrasonic vibration component 30, the rotation drive component 40 and the tool module 20.

[0073] It can be understood that in this embodiment, through the detachable connection design, the user can quickly replace the blade in the tool module 20 after disconnecting the ultrasonic vibration component 30 and the rotation drive component 40 from the tool module 20, which significantly reduces the time required to replace the blade and improves the replacement efficiency. The replacement process is more convenient without disassembling the entire tool system.

[0074] In one embodiment of the present invention, a Hall sensor is further disposed on the coil circuit board 43 , and the Hall sensor faces the tool module 20 and is used to detect the rotation angle of the tool module 20 .

[0075] It can be understood that in this embodiment, the Hall sensor determines the rotation angle of the tool module 20 by detecting the change of the magnetic field. When the tool module 20 rotates, the magnetic field generated by the magnetic member 47 (such as a rubidium magnet) thereon will pass through the Hall sensor, causing the electrical signal output by the sensor to change. By reading and measuring the output signal of the Hall sensor in real time, the rotation direction of the tool module 20 can be accurately controlled. This real-time feedback mechanism enables the tool module 20 to actively adjust the direction of the blade according to the change of the cutting direction, ensuring that the blade is always facing the cutting direction, avoiding the risk of folding the blade during high-speed turning.

[0076] In one embodiment of the present invention, a flange ring 60 is further disposed on the outer side of the tool holder housing 10 , and the flange ring 60 is used to quickly connect the tool holder housing 10 to the tool support.

[0077] It can be understood that in this embodiment, the flange ring 60 is a part of the tool holder housing 10, making the structure of the entire tool device more compact, and the tool holder housing 10 can be connected to the tool holder bracket by bolts or nuts. When the tool needs to be replaced, the user only needs to loosen the bolts or nuts on the flange ring 60 to quickly separate the tool holder housing 10 from the tool holder, and reconnect them after replacing the tool module 20.

[0078] In one embodiment of the present invention, an elastic member is disposed in the elastic cavity 50 , and the elastic member is configured to adjust the up and down vibration amplitude of the tool module 20 .

[0079] Please refer to Figure 1-Figure 3 In one of the embodiments of the present invention, an adjustment device can be used for the ultrasonic variable-direction tool described in any one of the above-mentioned multiple embodiments, including a knife depth adjustment member 70, the outer side of the knife depth adjustment member 70 is provided with a thread, the knife depth adjustment member 70 is threadedly arranged on the bottom of the knife seat housing 10, and the knife depth adjustment member 70 is provided with a through hole, and the tool module 20 passes through the knife depth adjustment member 70 from the through hole.

[0080] It can be understood that in the present embodiment, a through hole is provided inside the knife depth adjustment member 70, and the tool module 20 passes through the knife depth adjustment member 70 through the through hole, thereby ensuring the stability of the tool module 20, while allowing the extension distance of the knife tip relative to the knife depth adjustment member 70 to be changed by moving the adjustment member up and down, thereby achieving different cutting depth effects.

[0081] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An ultrasonic variable-direction tool, characterized in that: include: Tool holder housing, tool module, ultrasonic vibration assembly and rotary drive assembly; The tool module is movably disposed inside the tool holder housing, and the bottom of the tool module extends out of the bottom of the tool holder housing; The ultrasonic vibration component is arranged on the top of the tool holder housing, and the ultrasonic vibration component is in transmission connection with the tool module, so that the ultrasonic vibration component drives the tool module to vibrate up and down when in operation; The rotary drive assembly is disposed inside the tool holder housing, and the rotary drive assembly is in transmission connection with the tool module, so as to drive the tool module to adjust the cutting direction when the rotary drive assembly is in operation; An elastic cavity is formed below the rotary drive assembly and at the bottom of the knife seat housing.

2. The ultrasonic variable-direction tool according to claim 1, characterized in that: The ultrasonic vibration assembly includes a fixed nut cover, an ultrasonic crystal and an ejector pin cover; The fixing nut cover is fixedly arranged on the top of the ultrasonic crystal, and the fixing nut cover is threadedly connected to the top of the knife seat housing to close the top opening of the knife seat housing; The ejector cover is fixedly arranged on the bottom of the ultrasonic crystal, and the ejector cover abuts against the tool module.

3. The ultrasonic variable-direction tool according to claim 2, characterized in that: The fixing nut cover is provided with a connection port for leading out a power supply wire; Wherein, the power supply wires at least include the power supply wire harnesses of the ultrasonic crystal and the rotation drive assembly; and / or, the connection port is also used to lead out a control line of the connection port.

4. The ultrasonic variable-direction tool according to claim 2, characterized in that: The rotary drive assembly includes a movable sleeve, an internal coil and a coil circuit board arranged in the movable sleeve; The bottom of the movable sleeve is provided with a bottom support plate for fixed connection, the upper surface of the bottom support plate is provided with a bearing for fixed connection, and the bottom support plate is coaxially movably arranged with the tool module through the bearing; The coil circuit board is arranged above the bearing, the internal coil is fixedly arranged on the coil circuit board, and the internal coil and the tool module are coaxially slidably arranged.

5. The ultrasonic variable-direction tool according to claim 4, characterized in that: At least two slide grooves are arranged on the outer side of the movable sleeve, and a plurality of rolling bodies are arranged in the slide grooves. The rolling bodies abut against the inner wall surface of the tool holder shell so that the movable sleeve can slide up and down parallel to the tool holder shell.

6. The ultrasonic variable-direction tool according to claim 4, characterized in that: The tool module is provided with a magnetic member corresponding to the internal coil, and the tool module is elastically and tightly matched with the magnetic member through a rubber member; Wherein, the magnetic part is located above the internal coil, and the magnetic part is coaxial with the internal coil. The internal coil is used to drive the tool module to rotate through the magnetic part after power is turned on, so that the tool module faces the cutting direction.

7. The ultrasonic variable-direction tool according to claim 6, characterized in that: The magnetic member includes dispersedly arranged nepheline magnets; And / or, the tool module is configured to be detachably connected to the tool holder housing for replacing the blade in the tool module after releasing the connection between the ultrasonic vibration component, the rotary drive component and the tool module.

8. The ultrasonic variable-direction tool according to claim 4, characterized in that: A Hall sensor is also provided on the coil circuit board, and the Hall sensor faces the tool module and is used to detect the rotation angle of the tool module; And / or, a flange ring is further provided on the outer side of the tool holder shell, and the flange ring is used to quickly connect the tool holder shell to the tool support.

9. The ultrasonic variable-direction tool according to claim 1, characterized in that: An elastic member is arranged in the elastic cavity, and the elastic member is configured to adjust the up and down vibration amplitude of the tool module.

10. An adjustment device, which can be used for the ultrasonic variable-direction tool according to any one of claims 1 to 9, characterized in that: It includes a knife depth adjustment piece, the outer side of which is provided with a thread, the thread of the knife depth adjustment piece is arranged at the bottom of the knife seat shell, the knife depth adjustment piece is provided with a through hole, and the tool module passes through the knife depth adjustment piece from the through hole.

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