CN111687922A

CN111687922A - Novel ultrasonic cutting tool

Info

Publication number: CN111687922A
Application number: CN202010661786.7A
Authority: CN
Inventors: 郑涛; 王福康; 徐芬; 马朝勇
Original assignee: Changzhou Sinajet Science and Technology Co Ltd
Current assignee: Changzhou Sinajet Science and Technology Co Ltd
Priority date: 2020-06-29
Filing date: 2020-07-10
Publication date: 2020-09-22

Abstract

The invention relates to the technical field of cutting tools, in particular to a novel ultrasonic cutting tool, which comprises an ultrasonic tool bit, wherein the ultrasonic tool bit is arranged on a tool apron, the tool apron is arranged on a tool apron base plate, a first driving structure for lifting the tool apron is arranged on the tool apron base plate, and a second driving structure is arranged at the lower part of the tool apron; the cutter is quickly lifted, and the ultrasonic cutter head can rotate 360 degrees; a vertical direction original point switch and a rotary original point switch are arranged to ensure the cutting precision; the adjusting holes are arranged, so that the mounting position of the ultrasonic tool bit can be adjusted, the ultrasonic tool bit can adapt to materials with different thicknesses, and the cutting range of the cutter is enlarged; still be provided with hard spacing frame and extension spring, can play safety protection's effect.

Description

Novel ultrasonic cutting tool

Technical Field

The invention relates to the technical field of cutting tools, in particular to a novel ultrasonic cutting tool.

Background

The existing cutting bed cuts materials by the sharp edge of the blade, and the cutting mode has certain disadvantages, for example, the blade is dull and is cut continuously, and a new blade needs to be replaced. The hardness of the cut material is limited, and the blade cannot cut the material with high hardness.

Disclosure of Invention

In order to overcome the defects of the existing cutting tool of the cutting bed, the invention provides a novel ultrasonic cutting tool.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a novel ultrasonic cutting tool, contains the ultrasonic wave tool bit, the ultrasonic wave tool bit is installed on the blade holder, the blade holder is installed on the blade holder bottom plate, install the drive structure one that makes the blade holder move in vertical direction on the blade holder bottom plate, drive ultrasonic wave tool bit is installed to the blade holder lower part and is rotary motion's drive structure two.

According to another embodiment of the invention, the ultrasonic tool bit further comprises a housing, the housing is internally provided with a transducer, an amplitude transformer and a tool holder head which are connected in sequence, and the tool holder head is fixed with a blade which extends out of the lower end of the housing. Ultrasonic vibration is generated by the transducer, the frequency is amplified by the amplitude transformer and is transmitted to the tool chuck and the blade, and the blade obtains energy to cut materials.

According to another embodiment of the present invention, the tool apron further includes a housing structure and a base body, the base body is located on one side of the housing structure, the other side of the housing structure is slidably connected to a tool apron base plate through a slide block and a vertically arranged linear guide rail, the tool apron base plate is fixed with a first driving structure through a first support, a second support is arranged at a lower end of the housing structure, and the second driving structure is mounted on the second support. The tool apron is driven to lift through the driving structure I, and the linear guide rail plays a guiding role, so that the precision of lifting action is ensured; the ultrasonic cutter head is driven to rotate through the second driving structure, so that the angle of the blade is adjusted.

According to another embodiment of the invention, the first driving structure is a servo motor, the shaft end of the servo motor is connected with a lead screw, the lead screw is connected with a lead screw nut, and the lead screw nut is fixed on the second bracket. The servo motor drives the screw rod to rotate, the rotating action of the screw rod is converted into linear motion of the screw rod nut, the housing structure can be pushed or pulled to lift, and the tool apron can be driven to lift.

According to another embodiment of the invention, the second driving structure is a rotating motor, the holder body is rotatably connected with the cutter head sleeve through a bearing, the ultrasonic cutter head is fixed in the cutter head sleeve, and the rotating motor is connected with the lower end of the cutter head sleeve through a transmission structure.

According to another embodiment of the invention, the tool apron base plate is provided with a detection bracket, and the corresponding position of the tool apron side wall is provided with a first origin switch. Whether the cutter is located at the original point position in the vertical direction or not is judged by detecting the relative position between the support and the original point switch I, so that the accuracy of the vertical position of the cutter is guaranteed.

According to another embodiment of the invention, the tool apron further comprises a tool apron housing, wherein a tool apron cover is arranged on the tool apron housing, and a tool apron cover shell is arranged on the tool apron housing. Whether the cutter is located on the angle original point is judged by detecting the relative position of the pin shaft and the original point switch II, so that the accuracy of the angle of the cutter is guaranteed.

According to another embodiment of the invention, the ultrasonic scalpel head further comprises a limiting structure arranged on the outer wall of the ultrasonic scalpel head, the limiting structure comprises a limiting ring and a limiting block, the limiting block and the limiting ring are fixedly connected or integrally formed, the limiting ring is sleeved on the outer wall of the ultrasonic scalpel head, a U-shaped groove and at least two groups of adjusting holes are formed in the outer wall of the ultrasonic scalpel head, the limiting block is positioned in the U-shaped groove II, a bolt penetrates through the limiting ring to be fixed in one group of adjusting holes, and the limiting block is positioned in a groove of the scalpel head sleeve. Through a plurality of groups of adjusting holes, the position of the limiting ring can be finely adjusted, namely the mounting position of the ultrasonic tool bit can be adjusted, and the cutting device can adapt to materials with different thicknesses, so that the cutting range of the cutter is improved.

According to another embodiment of the invention, the tool rest further comprises a tension spring, the upper end of the tension spring is connected with the tool rest base plate hook, and the lower end of the tension spring is connected with the lower hook of the tool rest. The tension spring is arranged to mainly play a role in safety protection, and when power is suddenly cut off or electrical failure occurs, the tool apron is hung on the tool apron base plate through the tension spring, so that the tool apron is prevented from falling off and scratching a machine table board or damaging a tool.

According to another embodiment of the invention, the tool rest further comprises a hard limiting frame, the hard limiting frame is arranged on the side part of the tool rest, and the extending end of the hard limiting frame is positioned above the tool rest base plate. Set up hard spacing and play the effect of the cutting depth of the whole blade holder of restriction, when the blade holder was too downstream, hard spacing can with the upper surface contact of blade holder bottom plate to prevent the further downstream of blade holder, thereby prevent that the cutter from damaging or incising the mesa.

The ultrasonic cutting tool has the advantages that the ultrasonic cutting tool is arranged on the machine head, the traditional mode of cutting by the sharp edge of the blade is changed, the energy of ultrasonic waves is adopted, the influence of the hardness of materials is avoided, the cut materials can be locally heated and melted, and therefore the purpose of cutting the materials is achieved, and the ultrasonic cutting tool has the advantages that the friction resistance is extremely small, the cut materials are not easy to stick to the blade, and the like; the tool apron is driven to lift in the vertical direction by the first driving structure, so that the tool is lifted or the lower tool is used for cutting; the second driving structure is utilized to enable the ultrasonic cutter head to rotate by a certain angle, so that the requirements of different cutting directions are met; the cutter is fast to lift, the ultrasonic cutter head can rotate 360 degrees, the cutting quality of the cutter is effectively improved by using the energy of ultrasonic waves, the service life of the cutter can be greatly prolonged, and therefore cost is reduced and efficiency is improved; the invention is provided with the original point switch and the rotary original point switch in the vertical direction, thereby ensuring the cutting precision; the ultrasonic cutter head is provided with the adjusting hole, so that the mounting position of the ultrasonic cutter head can be adjusted, the ultrasonic cutter head can adapt to materials with different thicknesses, and the cutting range of the cutter is enlarged; in addition, the invention is also provided with a hard limiting frame and a tension spring, which can play a role of safety protection.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is an exploded view of the second embodiment of the present invention;

FIG. 4 is a perspective view of an ultrasonic blade;

FIG. 5 is a cross-sectional view of an ultrasonic blade;

FIG. 6 is a schematic view of a toolholder head mounting insert;

FIG. 7 is a perspective view of the tool holder;

FIG. 8 is a cross-sectional view of the tool holder;

fig. 9 is a partially enlarged view of fig. 8.

In the figure, 1, ultrasonic knife heads, 1-1, a shell, 1-2, a transducer, 1-3, an amplitude transformer, 1-4, knife chucks, 1-5, blades, 1-6, U-shaped grooves, 1-7, an adjusting hole, 2, a knife holder, 2-1, a housing structure, 2-2, a seat body, 3, a knife holder bottom plate, 4, a driving structure I, 5, a driving structure II, 6, a linear guide rail, 7, a sliding block, 8, a support I, 9, a support II, 10, a screw rod, 11, a screw rod nut, 12, a groove, 13, a knife holder sleeve, 13-1, a rotation stopping hole, 14, a transmission structure, 15, an original point switch I, 16, a detection pin shaft, 17, an original point switch II, 18, a tension spring, 19, a hard limiting frame, 20, a limiting structure, 20-1, a limiting ring, 20-2, a limiting block, 21 and a positioning groove, 22. the device comprises a knife pressing plate 23, a jacking screw 24, a conductive sliding ring 25, an opening 26, a tensioning mechanism 27, a rotation stopping structure 28, a locking nut 29 and a detection support.

Detailed Description

As shown in fig. 1 to 9, which are schematic structural diagrams of the present invention, a novel ultrasonic cutting tool comprises an ultrasonic tool bit 1, wherein the ultrasonic tool bit 1 is mounted on a tool apron 2, the tool apron 2 is mounted on a tool apron base plate 3, a first driving structure 4 for driving the tool apron 2 to move in a vertical direction is mounted on the tool apron base plate 3, and a second driving structure 5 for driving the ultrasonic tool bit 1 to rotate is mounted on a lower portion of the tool apron 2.

In this application, ultrasonic cutting tool installs on the aircraft nose, and it changes the traditional mode that relies on the sharp sword cutting of blade, and adopts ultrasonic energy, does not receive the influence of material hardness, can be by the local heating melting of cutting material to reach cutting material's purpose, it is very little to have frictional resistance, is difficult for gluing advantages such as blade by cutting material, and simultaneously, the cutting part has the fusion effect, carries out the banding to the cutting part, can prevent that the material from being organized by cutting part loose. Driving the tool apron 2 to lift in the vertical direction by using a first driving structure 4, so that the tool is lifted or the lower tool is used for cutting; utilize drive structure two 5 to make ultrasonic wave tool bit 1 rotatory certain angle to adapt to the requirement of different cutting directions, be convenient for simultaneously guarantee lifting precision and cutter maintenance. This application, the cutter goes up and down swiftly, and ultrasonic wave tool bit 1 can 360 rotations, utilizes ultrasonic wave's energy not only effectively to improve the cutting quality of cutter, can also promote the cutter life-span by a wide margin to reduce cost and improve the effect.

According to another embodiment of the invention, the ultrasonic scalpel head 1 comprises a shell 1-1, the shell 1-1 is internally provided with a transducer 1-2, an amplitude transformer 1-3 and a scalpel head 1-4 which are connected in sequence, a blade 1-5 is fixed on the scalpel head 1-4, and the blade 1-5 extends out of the lower end of the shell 1-1.

The transducer 1-2 is composed of a plurality of piezoelectric ceramic pieces clamped between two metal blocks, ultrasonic frequency voltage from a generator is converted into ultrasonic vibration with the same frequency through an inverse piezoelectric effect, the working frequency range of ultrasonic waves generated by the piezoelectric ceramic pieces is 18 KHz-50 KHz, and the maximum power can reach 2500W. High-frequency vibration is realized through high-frequency expansion or contraction of the piezoelectric ceramic piece, the vibration is transmitted to the amplitude transformer 1-3, and the frequency is amplified again by the amplitude transformer 1-3. The transducer 1-2 is mounted on an amplitude transformer 1-3, the amplitude transformer 1-3 serving to fix the transducer and to amplify the frequency of vibrations generated by the transducer 1-2. The horn 1-3 may connect the tool holder head 1-4 by means of a connecting screw or the like, thereby transferring energy further to the tool holder head 1-4. The knife clamping head 1-4 is provided with a positioning groove 21, the knife blade 1-5 is arranged in the positioning groove 21 and then fixed on the knife clamping head 1-4 through a knife pressing plate 22, the knife pressing plate 1-4 is provided with a jacking screw 23, and the jacking screw 23 plays a role in jacking the knife blade 1-5.

Preferably, the shell 1-1 is provided with a U-shaped groove or a round hole at a position corresponding to the jacking screw 23, so that the jacking screw 23 can be conveniently detached from the shell by a wrench, and the aim of detaching and assembling the blade 1-5 is fulfilled. Because the blades 1-5 are tightly pressed by one pressing screw 23, the blades 1-5 can be assembled and disassembled simply and quickly in the pressing mode.

Preferably, the top of the housing 1-1 is encapsulated by a conductive slip ring 24, and the conductive slip ring 24 is used for fixing the wires of the transducer 1-2 and preventing dust.

According to another embodiment of the invention, the tool apron 2 comprises a housing structure 2-1 and a base body 2-2, the base body 2-2 is located on one side of the housing structure 2-1, the other side of the housing structure 2-1 is slidably connected with a tool apron base plate 3 through a slide block 7 and a vertically arranged linear guide rail 6, a first driving structure 4 is fixed on the tool apron base plate 3 through a first support 8, a second support 9 is arranged at the lower end of the housing structure 2-1, and a second driving structure 5 is installed on the second support 9.

The slide block 7 is fixed on the tool apron bottom plate 3, the linear guide rail 6 is fixed on the side wall of the housing structure 2-1, the tool apron 2 is driven to lift through the driving structure I4, and the linear guide rail 6 plays a role in guiding, so that the precision of lifting action is guaranteed; the second driving structure 5 is arranged on the second bracket 9, namely the inner part of the housing structure 2-1, and the second driving structure 5 drives the ultrasonic scalpel head 1 to rotate so as to adjust the angle of the blade 1-5.

According to another embodiment of the invention, the driving structure one 4 is a servo motor, the shaft end of the servo motor is connected with a lead screw 10, the lead screw 10 is connected with a lead screw nut 11, and the lead screw nut 11 is fixed on the second bracket 9.

The servo motor drives the screw rod 10 to rotate, the rotation action of the screw rod 10 is converted into the linear motion of the screw nut 11, the screw nut 11 is fixed on the second support 9, the second support 9 is installed at the lower part of the housing structure 2-1, and the linear action of the screw nut 11 can push or pull the housing structure 2-1 to lift, so that the tool apron 2 can be driven to lift.

Preferably, the first driving structure 4 is located in the housing structure 2-1, an opening 25 is formed in the side wall of the housing structure 2-1, the first driving structure 4 is fixedly connected with the tool apron base plate 3 through the first support 8, the opening 25 is arranged to facilitate the lifting of the housing structure 2-1 to avoid the first driving structure 4 and prevent movement interference, and the housing structure 2-1 covers the first driving structure 4 and the second driving structure 5 to achieve the protection effects of water resistance, dust resistance and the like.

According to another embodiment of the present invention, the second driving structure 5 is a rotating motor, the base 2-2 is rotatably connected to a cutter head sleeve 13 through a bearing, the ultrasonic cutter head 1 is fixed in the cutter head sleeve 13, and the rotating motor is connected to the lower end of the cutter head sleeve 13 through a transmission structure 14.

The built-in bearing of the seat body 2-2 plays a role in supporting the ultrasonic tool bit 1 and the tool bit sleeve 13 to rotate, and the transmission structure 14 can be a gear transmission structure, a synchronous belt transmission structure and the like, and transmits the rotation of the rotating motor to the tool bit sleeve 13 and the ultrasonic tool bit 1. Adopt the hold-in range transmission structure in this application, for preventing that the hold-in range is not hard up to influence cutting accuracy, be provided with the straining device 26 of tensioning hold-in range.

Preferably, the seat body 2-2 is provided with a rotation stopping structure 27, the rotation stopping structure 27 comprises a rotation stopping nut 27-1, a rotation stopping shaft 27-2 and a spring 27-3, the tool head sleeve 13 is provided with a corresponding rotation stopping hole 13-1, since the tool head sleeve 13 can rotate when the tool is disassembled, at this time, the rotation stopping structure 27 is needed to limit the rotation of the tool head sleeve 13, the rotation stopping nut 27-1 is connected to the seat body 2-2 in a threaded manner to limit the outward running of the rotation stopping shaft 27-2, one end of the spring 27-3 is propped against the seat body 2-2, the other end of the spring 27-3 is propped against a step surface of the rotation stopping shaft 27-2, under normal conditions, the spring 27-3 elastically stretches the rotation stopping shaft 27-2 outwards, the tool head sleeve 13 rotates without interfering with the rotation stopping shaft, when the locking nut needs to be disassembled, the rotation stopping shaft 27-2 is pressed inwards, the rotation stopping shaft 27-2 enters the rotation stopping hole 13-1 of the cutter head sleeve 13, so that the rotation of the cutter head sleeve 13 is limited; when the rotation stopping shaft 27-2 is released, the spring 27-3 springs the rotation stopping shaft 27-2 outwards to be separated from the rotation stopping hole 13-1.

According to another embodiment of the invention, it further includes that the tool apron base plate 3 is provided with a detection bracket 29, and the corresponding position of the side wall of the tool apron 2 is provided with a first origin switch 15.

The detection bracket 29 corresponds to the position of the first origin switch 15 and is at the same height. When the tool apron 2 moves upwards, the first original point switch 15 rises along with the tool apron, at the moment, the detection support 29 and the first original point switch 15 are not at the same height, the detection support 29 does not block the first original point switch 15, the signal of the first original point switch 15 is switched, and the signal is fed back to the system, so that the system controls the first driving structure 4 to stop acting. In this application, initial point switch 15 is the sensor among the prior art, judges whether the cutter is located the ascending initial point position of vertical direction through detecting the relative position between support 29 and initial point switch 15 to the accuracy of position about guaranteeing the cutter.

According to another embodiment of the present invention, a detection pin 16 is disposed on an outer wall of the tool post sleeve 13, and a second origin switch 17 is installed at a corresponding position of the housing structure 2-1 of the tool post 2.

The principle of detection round pin axle 16 and two 17 of initial point switch is the same as before, in this application, two 17 of initial point switch also are the sensor among the prior art, when detection round pin axle 16 and two 17 of initial point switch are at same angle, two 17 of initial point switch can sense detection round pin axle 16, then prove that the angle of cutter is the rotation initial point, if detection round pin axle 16 and two 17 of initial point switch are not at same angle, when the angle has the deviation promptly, two 17 of initial point switch can not sense detection round pin axle 16, two 17 of initial point switch send out the signal and give the system, the suggestion cutter is not on the initial point of angle. Whether the cutter is located on the angle origin is judged by detecting the relative position of the pin shaft 16 and the second origin switch 17, so that the accuracy of the angle of the cutter is guaranteed.

According to another embodiment of the invention, the ultrasonic scalpel head further comprises a limiting structure 20 arranged on the outer wall of the ultrasonic scalpel head 1, the limiting structure 20 comprises a limiting ring 20-1 and a limiting block 20-2, the limiting block 20-2 is fixedly connected with or integrally formed with the limiting ring 20-1, the limiting ring 20-1 is sleeved on the outer wall of the ultrasonic scalpel head 1, a U-shaped groove 1-6 and at least two groups of adjusting holes 1-7 are arranged on the outer wall of the ultrasonic scalpel head 1, the limiting block 20-2 is located in the U-shaped groove two 1-6, a bolt penetrates through the limiting ring 20-1 to be fixed in one group of adjusting holes 1-7, and the limiting block 20-2 is located in the groove 12 of the scalpel head sleeve 13.

The position of the limiting ring 20-1 can be finely adjusted through the plurality of groups of adjusting holes 1-7, namely, the position of the limiting block 20-2 can be adjusted, when the ultrasonic scalpel head 1 is fixed in the scalpel head sleeve 13, the limiting block 20-2 is clamped with the groove 12, and the locking nut 28 is used for locking to prevent the ultrasonic scalpel head 1 from axially moving, so that the mounting position of the ultrasonic scalpel head 1 can be adjusted through the plurality of groups of adjusting holes 1-7, the ultrasonic scalpel head can adapt to materials with different thicknesses, and the cutting range of the cutter is widened.

According to another embodiment of the invention, the tool rest further comprises a tension spring 18, wherein the upper end of the tension spring 18 is connected with the hook of the tool rest base plate 3, and the lower end of the tension spring 18 is connected with the hook of the lower part of the tool rest 2.

The tension spring 18 is arranged to mainly play a role of safety protection, for example, when power is suddenly cut off or electrical failure occurs, the tool apron 2 is hung on the tool apron base plate 3 through the tension spring 18, so that the tool apron 2 is prevented from falling to scratch the machine table board or damage a tool.

According to another embodiment of the invention, the tool holder further comprises a hard limiting frame 19, wherein the hard limiting frame 19 is arranged on the side part of the tool holder 2, and the extending end of the hard limiting frame 19 is positioned above the tool holder bottom plate 3.

Set up hard spacing 19 and play the effect of the cutting depth of the whole blade holder 2 of restriction, when blade holder 2 too downstream, hard spacing 19 can with the upper surface contact of blade holder bottom plate 3 to prevent the further downstream of blade holder 2, thereby prevent cutter damage or incised wound mesa.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a novel ultrasonic cutting tool, characterized by contains ultrasonic wave tool bit (1), install on blade holder (2) ultrasonic wave tool bit (1), install on blade holder bottom plate (3) blade holder (2), install drive structure (4) that make blade holder (2) move in vertical direction on blade holder bottom plate (3), drive ultrasonic wave tool bit (1) are rotary motion's drive structure two (5) are installed to blade holder (2) lower part.

2. The novel ultrasonic cutting tool as set forth in claim 1, wherein the ultrasonic cutting head (1) comprises a housing (1-1), the housing (1-1) is internally provided with a transducer (1-2), an amplitude transformer (1-3) and a tool holder (1-4) which are connected in sequence, the tool holder (1-4) is fixed with a blade (1-5), and the blade (1-5) extends from the lower end of the housing (1-1).

3. The novel ultrasonic cutting tool as set forth in claim 1, wherein the tool post (2) comprises a housing structure (2-1) and a base body (2-2), the base body (2-2) is located on one side of the housing structure (2-1), the other side of the housing structure (2-1) is slidably connected with a tool post base plate (3) through a slide block (7) and a vertically arranged linear guide rail (6), the tool post base plate (3) is fixed with a first driving structure (4) through a first support (8), a second support (9) is arranged at the lower end of the housing structure (2-1), and a second driving structure (5) is mounted on the second support (9).

4. A novel ultrasonic cutting tool as claimed in claim 3, characterized in that the first driving structure (4) is a servo motor, the end of the servo motor is connected with a lead screw (10), the lead screw (10) is connected with a lead screw nut (11), and the lead screw nut (11) is fixed on the second bracket (9).

5. The novel ultrasonic cutting tool as claimed in claim 3, wherein the second driving structure (5) is a rotating motor, the base body (2-2) is rotatably connected with the head cover (13) through a bearing, the ultrasonic tool bit (1) is fixed in the head cover (13), and the rotating motor is connected with the lower end of the head cover (13) through a transmission structure (14).

6. The novel ultrasonic cutting tool as set forth in claim 1, wherein the tool holder base plate (3) is provided with a detection bracket (29), and a first origin switch (15) is provided at a corresponding position of the side wall of the tool holder (2).

7. The novel ultrasonic cutting tool as claimed in claim 5, wherein the outer wall of the tool head sleeve (13) is provided with a detection pin shaft (16), and a second origin switch (17) is installed at a corresponding position of the housing structure (2-1) of the tool apron (2).

8. The novel ultrasonic cutting tool as set forth in claim 5, wherein the outer wall of the ultrasonic tool bit (1) is provided with a limit structure (20), the limiting structure (20) comprises a limiting ring (20-1) and a limiting block (20-2), the limiting block (20-2) is fixedly connected with the limiting ring (20-1) or integrally formed, the limiting ring (20-1) is sleeved on the outer wall of the ultrasonic cutter head (1), the outer wall of the ultrasonic tool bit (1) is provided with a U-shaped groove (1-6) and at least two groups of adjusting holes (1-7), the limiting block (20-2) is positioned in the U-shaped groove II (1-6), the bolt penetrates through the limiting ring (20-1) to fix the limiting block in one group of adjusting holes (1-7), the limiting block (20-2) is positioned in the groove (12) of the cutter head sleeve (13).

9. The novel ultrasonic cutting tool as set forth in claim 1, further comprising a tension spring (18), wherein the upper end of the tension spring (18) is connected to the hook of the holder base plate (3), and the lower end thereof is connected to the hook of the lower portion of the holder (2).

10. The novel ultrasonic cutting tool according to claim 1, further comprising a hard limiting frame (19), wherein the hard limiting frame (19) is installed on the side portion of the tool apron (2), and the extending end of the hard limiting frame (19) is located above the tool apron base plate (3).