Knife handle for ultrasonic machining

Abstract

The invention discloses a knife handle for ultrasonic machining, and is applied to the technical field of ultrasonic machining. The knife handle comprises an ultrasonic transduction part, an amplitude-change pole, a detection part and a chuck which are sequentially connected from top to bottom; the ultrasonic transduction part is used for sending a set ultrasonic signal; the amplitude-change pole is used for converting an ultrasonic signal sent by the ultrasonic transduction part into mechanical vibration and transmitting the mechanical vibration to the chuck through the detection part; the detection part comprises a shell, a support frame and a sensor; the top of the shell is fixedly connected with the amplitude-change pole, and the bottom of the shell is fixedly connected with the chuck; the supporting frame is arranged in the shell, multidirectional hinges are arranged on the inner wall sides, close to the shell, of the supporting frame, the multidirectional hinges are connected with the sensors, the supporting frame is used for making the sensors abut against the inner walls of the shell all the time, and the sensors are used for detecting cutting deformation of the shell in different dimensions; the chuck is used for installing a cutter. The supporting frame and the multidirectional hinge can enable the plurality of sensors to be always attached to the inner walls of the shell, and the sensors can achieve detection of multidimensional deformation of the shell.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic processing, and particularly to a tool shank for ultrasonic processing. Background Art

[0002] With the development of technology, ultrasonic waves are increasingly applied by people. Especially in the field of difficult-to-machine materials, many key process problems have been solved and good results have been achieved. Ultrasonic processing is a special processing method that uses ultrasonic energy to remove or deform materials. Its basic principle is that a high-frequency vibration is generated by an ultrasonic generator, converted into a mechanical vibration by a transducer, and then drives a tool or a workpiece to perform high-frequency vibration in a liquid medium, thereby achieving material removal or deformation.

[0003] For the ultrasonic vibration-assisted processing technology, the quality of obtaining the cutting force parameters directly determines the accuracy of the entire ultrasonic vibration processing. As an important research object, the measurement methods of cutting force parameters have become more diversified with the continuous development of technology. When the cutting force changes, it will affect the tool and the state of the machine tool spindle, and the current of the DC motor of the machine tool will also change.

[0004] In the prior art, there are attempts to monitor the cutting force by recording the electrical signals of the DC motor in a numerically controlled machine tool. Its main principle is to derive the relationship between the change in the current of the DC motor and the cutting force to calculate the cutting force. This method can roughly obtain the cutting force value, but the relationship model between the cutting force and the electrical signal of the DC motor is very complex, and there are also many influencing factors that cannot be excluded, and its signal-to-noise ratio is very low. There are also researchers who have tried to use Hall sensors, controlled by a single-chip microcomputer, to collect and analyze the offset of the motor current generated with the change of the cutting force, and then analyze the cutting force state. There are also prior arts that have tried to introduce a three-component accelerometer in the measurement of the cutting force, and designed a self-correcting filter by considering the flexible modal vibration and the inertial force and viscous force of the rigid body motion, which attenuates the error to a certain extent, but cannot measure the low-frequency cutting force, and the structure is also relatively complex. Summary of the Invention

[0005] The present invention provides a tool shank for ultrasonic processing, aiming to solve the technical problem of low accuracy in obtaining cutting force parameters in the prior art.

[0006] To solve the above problems, the present invention provides a tool shank for ultrasonic processing, including an ultrasonic transducer part, a horn, a detection part, and a chuck, which are connected in sequence from top to bottom;

[0007] The ultrasonic transducer part is used to emit a set ultrasonic signal;

[0008] The horn is used to convert the ultrasonic signal emitted by the ultrasonic transducer part into a mechanical vibration and transmit it to the chuck through the detection part;

[0009] The detection unit includes a housing, a support frame, and a sensor; the top of the housing is fixedly connected to the horn, and the bottom of the housing is fixedly connected to the chuck; the support frame is disposed inside the housing, and multi-directional hinges are provided on the inner wall sides of the support frame close to the housing, the multi-directional hinges are connected to the sensor, the support frame is used to keep the sensor in contact with the inner wall of the housing all the time, and the sensor is used to detect the cutting deformation of the housing in different dimensions;

[0010] The chuck is used for installing a cutting tool.

[0011] In one embodiment, the support frame includes a plurality of connection points, and the plurality of connection points are respectively arranged adjacent to the inner walls of the housing;

[0012] The multi-directional hinges are connected to the connection points.

[0013] In one embodiment, the support frame includes a plurality of support rods, and the plurality of support rods are connected to each other to form a polyhedron structure, and the connection points are at the joints of the sides of the polyhedron structure.

[0014] In one embodiment, the support rods are made of an elastic material, so that the support frame elastically abuts the sensor against the inner wall of the housing.

[0015] In one embodiment, the multi-directional hinge is a ball joint.

[0016] In one embodiment, the sensor is a piezoelectric film intelligent sensor.

[0017] In one embodiment, a controller is further included, the controller is in signal connection with the sensor of the detection unit and the ultrasonic transducer unit, and the controller is used to adjust the ultrasonic signal output by the ultrasonic transducer unit according to the signal detected by the sensor.

[0018] In one embodiment, the ultrasonic transducer unit includes a first matching block, a second matching block, and an ultrasonic transducer;

[0019] The first matching block is disposed on the side of the ultrasonic transducer close to the horn, and the first matching block is connected to the ultrasonic transducer;

[0020] The second matching block is disposed on the side of the ultrasonic transducer away from the horn, and the second matching block is connected to the ultrasonic transducer;

[0021] The first matching block and the second matching block are used to ensure the stability of the ultrasonic transducer unit during ultrasonic vibration.

[0022] In one embodiment, the outer diameter of the horn gradually decreases from the end close to the ultrasonic transducer part to the end close to the detection part.

[0023] In one embodiment, the axial dimension of the horn is an integer multiple of the ultrasonic signal wavelength.

[0024] As can be seen from the above technical solutions, the present invention has at least the following advantages:

[0025] This embodiment provides a tool shank for ultrasonic machining. Since a detection part for detecting the cutting state is connected between the chuck and the ultrasonic transducer part, the detection part includes a housing, a support frame, and a sensor. The support frame is connected with multi-directional hinges on the inner wall sides of the housing, and the multi-directional hinges are connected with the sensor. The support frame and the multi-directional hinges can keep the multiple sensors in close contact with the inner walls of the housing all the time. The sensor can detect the multi-dimensional deformation of the housing, thereby detecting the cutting force parameters of the chuck, and further realizing the accurate acquisition of the cutting force parameters, effectively solving the technical problem of low accuracy in obtaining the cutting force parameters in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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 be obtained according to these drawings.

[0027] Figure 1 It is the overall structural diagram of the tool shank for ultrasonic machining provided by the embodiment of the present invention;

[0028] Figure 2 It is the structural diagram of the detection part provided by the embodiment of the present invention.

[0029] REFERENCE SIGNS:

[0030] 100, control part; 210, ultrasonic transducer part; 220, first matching block; 230, second matching block; 240, connecting flange; 250, ultrasonic transducer; 300, horn; 400, detection part; 410, housing; 420, support frame; 421, support rod; 430, multi-directional hinge; 440, sensor; 500, chuck; 600, tool. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In order to make the object, features, and advantages of the present invention more obvious and understandable, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Ultrasonic machining has many excellent characteristics. For example, high machining accuracy: Due to the concentrated action of ultrasonic waves, machining accuracy at the micron or even nanometer level can be achieved. Wide machining range: Ultrasonic machining is applicable to various hard and brittle materials such as ceramics, glass, quartz, etc., and can also be used for the machining of metal materials. Small machining force: During ultrasonic machining, the contact force between the tool and the workpiece is small, reducing the cutting force and thermal influence during machining. Simple equipment structure: Ultrasonic machining equipment is relatively simple and easy to maintain and operate.

[0033] Due to the assistance of high-frequency vibration in this ultrasonic process, even the hardest products can be machined with less force and higher feed power. Especially for some products that are difficult to machine and have high surface treatment requirements, it has great advantages. There are many types of ultrasonic machining, such as ultrasonic welding, drilling, grinding and polishing, cutting, etc. If classified according to process attributes, it includes ultrasonic hybrid machining, micro-ultrasonic machining, etc.

[0034] The equipment for ultrasonic machining is very crucial, determining the stability and adaptability of ultrasonic energy. Generally, there are special ultrasonic spindles, ultrasonic transducers, ultrasonic tool holders and other components. Currently, the technical differences in ultrasonic machining mostly lie in the equipment. Advanced equipment manufacturers are mainly in Germany, the United States, etc.

[0035] For ultrasonic vibration-assisted machining technology, the quality of obtaining cutting force parameters directly determines the accuracy of the entire ultrasonic vibration machining. When selecting an appropriate detection method, the characteristics of the sample, the required detection sensitivity and accuracy, and the convenience of operation need to be considered. Each method has its limitations, so in practical applications, it may be necessary to combine multiple technologies to obtain more comprehensive analysis results. For example, in a strain-type dynamometer, the overall size of the dynamometer is relatively large, the natural frequency is relatively high, and the detection accuracy is relatively low. It is difficult to detect the machining force for some micro-ultrasonic machining. The piezoelectric dynamometer has excellent comprehensive performance, but its manufacturing process is very precise and the cost is extremely high, so it is not widely used. In a grating fiber optic dynamometer, the Z-direction sensitivity is relatively low, and the three-direction natural frequencies are also relatively low.

[0036] The dynamometric cutting force measurement method, in principle, assumes the machined part as a rigid body, measures the cutting force received by the machined part, and ignores the losses during the force transmission process. However, in the actual machining process, the stiffness of the machined part is not infinite, and there will be a certain attenuation after the force is transmitted to the dynamometer, resulting in a certain gap between the measurement result and the actual force on the tool. With the continuous development of intelligent manufacturing technology, measuring the cutting force through the method of intelligent tools has become a new development trend.

[0037] Therefore, the present invention provides a tool shank for ultrasonic machining. By connecting a detection part for detecting the cutting state between the chuck and the ultrasonic transducer part, and using multiple sensors in the detection part to always keep in contact with the inner walls of the housing, the detection of multi-dimensional deformation of the housing is realized, and then the detection of multi-dimensional deformation of the chuck is realized, so as to completely solve the technical problem of low accuracy in obtaining cutting force parameters in the prior art.

[0038] Please refer to Figure 1 and Figure 2 , this embodiment provides a tool shank for ultrasonic machining, including an ultrasonic transducer part 210, a horn 300, a detection part 400, and a chuck 500 that are connected in sequence from top to bottom;

[0039] The ultrasonic transducer part 210 is used to emit a set ultrasonic signal;

[0040] The horn 300 is used to convert the ultrasonic signal emitted by the ultrasonic transducer part 210 into mechanical vibration and transmit it to the chuck 500 through the detection part 400;

[0041] The detection part 400 includes a housing 410, a support frame 420, and sensors 440; the top of the housing 410 is fixedly connected to the horn 300, and the bottom of the housing 410 is fixedly connected to the chuck 500; the support frame 420 is arranged inside the housing 410, multi-directional hinges 430 are arranged on the side of the support frame 420 close to each inner wall of the housing 410, the multi-directional hinges 430 are connected to the sensors 440, the support frame 420 is used to keep the sensors 440 in contact with the inner wall of the housing 410 all the time, and the sensors 440 are used to detect the cutting deformation of the housing 410 in different dimensions;

[0042] The chuck 500 is used for detachably installing a tool 600.

[0043] Among them, the cutting deformation in different dimensions at least includes the up-down direction, the front-back direction, the left-right direction, and two inclined diagonal directions.

[0044] During the ultrasonic machining process of this embodiment, the ultrasonic transducer unit 210 emits ultrasonic signals. The horn 300 receives the ultrasonic signals, converts the ultrasonic signals into mechanical vibrations, and transmits them to the chuck 500 through the detection unit 400. When the chuck 500 processes the workpiece, the detection unit 400 can obtain the acting force of the cutting tool 600 on the chuck 500 during the machining of the workpiece. Specifically, the acting force of the cutting tool 600 during the machining of the workpiece will cause the housing 410 to vibrate or deform in multiple dimensions. The sensor 440 that always abuts against the inner walls of the housing 410 can detect the multi-dimensional vibration or deformation of the housing 410, thereby realizing the real-time and accurate acquisition of the cutting force parameters.

[0045] The advantages of this embodiment are as follows: First, the structure is simple and the data processing difficulty is small. Compared with the scheme of monitoring the electrical signals of the DC motor in a numerically controlled machine tool or using the Hall sensor 440, and the scheme of using a single-chip microcomputer to control, collect and analyze the offset generated by the motor current changing with the cutting force, this scheme only requires the housing 410, the support frame 420 and the sensor 440 to realize the cutting deformation of the cutting tool 600 in different dimensions, and the data processing difficulty is small. Second, the detection is accurate. Compared with some schemes that simply fix the sensor 440 horizontally and fit it with the housing 410, when the housing 410 deforms, because it simply fits with the housing 410, it can only detect the deformation in the horizontal cutting direction, and thus can only detect the change signal of the machining parameter in the horizontal cutting direction.

[0046] In a specific embodiment, as Figure 1 and Figure 2 shown, a realizable structure of the housing 410 in the detection unit 400 is further provided. The housing 410 has a hollow inner cavity that can accommodate the support frame 420, the multi-directional hinge 430 and the sensor 440.

[0047] In a specific embodiment, as Figure 1 and Figure 2As shown, a feasible structure of the support frame 420 in the detection unit 400 is further provided. The support frame 420 includes a plurality of connection points, and the plurality of connection points are respectively arranged adjacent to the inner walls of the housing 410. That is, when the housing 410 is a cube structure, the support frame 420 includes at least six connection points, and the six connection points are respectively arranged on the upper, lower, front, rear, left, and right six faces of the housing 410; a multi-directional hinge 430 is connected to the connection point, and the multi-directional hinge 430 at each connection point can realize the fixation of the support frame 420 and the sensor 440. The sensor 440 is in surface contact with the inner wall of the housing 410, and the sensor 440 is connected to the support frame 420 through the multi-directional hinge 430 to form a point-type structure connection. After the housing 410 vibrates or deforms, the sensor 440 can be adjusted around the connection point so that the sensor 440 can fit the inner wall of the housing 410 as much as possible, thereby accurately and comprehensively detecting the deformation of the housing 410.

[0048] In an embodiment, in order to improve the fitting tightness between the sensor 440 and the inner wall of the housing 410, the support frame 420 includes a plurality of support rods 421. The plurality of support rods 421 are connected to each other to form a polyhedron structure, and the connection points of the polyhedron structure are the connection points. The plurality of support rods 421 can be fixedly arranged according to a preset structure to form the support frame 420. For example, when the housing 410 is a cube structure, the support frame 420 is a cube and the vertices of the cube are the connection points. The support frame 420 is inclined and arranged in the housing 410. Compared with the single-rod support multi-directional hinge 430, the connection points are formed by the polyhedron of the polyhedron structure, and the support of the sensor 440 is more stable, and the problem that the sensor 440 is separated from the inner wall of the housing 410 due to the deformation of the single rod will not occur.

[0049] Based on the above embodiment, in order to further improve the fitting tightness between the sensor 440 and the inner wall of the housing 410, the support rod 421 is made of an elastic material so that the support frame 420 elastically abuts the sensor 440 against the inner wall of the housing 410, and the entire support frame 420 forms an elastic structure. This elastic structure can match the inner cavity of the housing 410. For example, the support frame can be made of a flexible metal material. That is, considering that the housing 410 itself will deform during the processing of the tool 600, by arranging the multi-directional hinge at the connection of the plurality of connecting rods and setting the connecting rods to be made of an elastic material, when the housing 410 deforms, the connecting rods will change accordingly, and then the positions of the connections of the connecting rods will change accordingly, thereby driving the sensor 440 to better fit the inner wall of the shell.

[0050] In a specific embodiment, such as Figure 1 and Figure 2As shown, the implementable structure of the multi-directional hinge 430 in the detection unit 400 is further provided. The multi-directional hinge 430 is a ball hinge, and a plurality of multi-directional hinges 430 are provided and correspond one-to-one with the number of a plurality of sensors 440. The multi-directional hinge 430 is fixedly arranged on the support frame 420 and is connected to the sensor 440 in a universal manner. The advantage of using a ball hinge connection is that the structure of the ball hinge itself can provide multi-directional degrees of freedom of movement, enabling the sensor 440 to better adapt to the shape changes and minute deformations inside the housing 410. This flexibility may help the sensor 440 maintain good contact with the inner wall of the housing 410 under different working conditions.

[0051] In one embodiment, the ball hinge mainly includes a sphere and a housing. The sphere is accommodated in the housing and can be connected to the housing in a universal manner. The housing is fixedly connected to the support frame 420, and the sphere is fixedly connected to the sensor 440.

[0052] In a specific embodiment, as Figure 1 and Figure 2 shown, the implementable structure of the sensor 440 in the detection unit 400 is further provided. The sensor 440 is a piezoelectric film intelligent sensor 440 or other flexible sensors 440. The flexible sensor 440 can detect the multi-dimensional deformation of the housing 410.

[0053] It should be noted that in some alternative ways, the sensor 440 is fixedly bonded to the housing to detect the deformation of the housing 410. However, compared with the simple scheme of making the sensor 440 fit the housing 410, when the housing 410 deforms, since it only simply fits the housing 410, it can only detect the deformation in the horizontal cutting direction.

[0054] In a specific embodiment, as Figure 1 and Figure 2 shown, to improve the intelligent control of ultrasonic output, a controller is further included. The controller is signal-connected to the sensor 440 of the detection unit 400 and the ultrasonic transducer unit 210. The controller is used to adjust the ultrasonic signal output by the ultrasonic transducer unit 210 according to the signal detected by the sensor 440. Specifically, during implementation, the detection unit 400 is communicatively connected to the control unit 100. The detection unit 400 obtains the acting force when the tool 600 processes the processing part and transmits the acting force applied to the tool 600 during the processing of the processing part to the control unit 100, enabling the control unit 100 to adjust the ultrasonic signal emitted by the ultrasonic transducer unit 210 based on this acting force, thereby realizing the dynamic adjustment of the cutting state of the tool 600 by the tool handle for ultrasonic processing provided by the present invention.

[0055] In a specific embodiment, as Figure 1 and Figure 2As shown, a feasible structure of the ultrasonic transducer unit 210 is further provided. The ultrasonic transducer unit 210 includes a first matching block 220, a second matching block 230, and an ultrasonic transducer 250. The first matching block 220 is disposed on the side of the ultrasonic transducer 250 close to the horn 300, and the first matching block 220 is connected to the ultrasonic transducer 250. That is, the first matching block 220 is disposed at the bottom of the ultrasonic transducer 250 (also referred to as the rear section of the ultrasonic transducer 250). The second matching block 230 is disposed on the side of the ultrasonic transducer 250 away from the horn 300, and the second matching block 230 is connected to the ultrasonic transducer 250. That is, the second matching block 230 is disposed at the top of the ultrasonic transducer 250 (also referred to as the front section of the ultrasonic transducer 250). The first matching block 220 and the second matching block 230 are used to ensure the stability of the ultrasonic transducer unit 210 during ultrasonic vibration.

[0056] After the ultrasonic transducer unit 210 adopts this setting method, there are at least the following advantages. First, the first matching block 220 and the second matching block 230 can match the acoustic impedance of the ultrasonic transducer unit 210, improving the energy transfer efficiency. Second, the first matching block 220 and the second matching block 230 can ensure that the ultrasonic transducer unit 210 maintains a stable vibration state during operation. Third, the rigidity of the overall structure can suppress the generation of harmful vibrations, ensuring the stability and consistency of ultrasonic vibration.

[0057] In an embodiment, a cooling structure, such as a heat sink or a cooling water channel, can be provided on the outer surfaces of the first matching block 220 and the second matching block 230 to dissipate the heat generated when the ultrasonic transducer unit 210 works. This helps to keep the working temperature of the ultrasonic transducer unit 210 stable.

[0058] In this embodiment, the first matching block 220 and the second matching block 230 can be made of a metal material, such as aluminum, titanium, etc. The sizes and shapes of the first matching block 220 and the second matching block 230 can be optimized according to the parameters of the ultrasonic transducer unit 210. Preferably, the length of the first matching block 220 and / or the second matching block 230 is 1 / 4 or 3 / 4 of the wavelength of the ultrasonic wave emitted by the ultrasonic transducer unit 210. The first matching block 220 and / or the second matching block 230 has a conical structure, and the size of the first matching block 220 and the second matching block 230 on the side close to the ultrasonic transducer unit 210 is larger than the size on the side away from the ultrasonic transducer unit 210.

[0059] In one embodiment, the tool shank for ultrasonic machining of the present application further includes an ultrasonic power supply. The ultrasonic power supply is connected to the ultrasonic transducer 250 through a wire. Furthermore, the output power emitted by the ultrasonic transducer 250 is adjusted by the current change of the ultrasonic power supply, and thus the ultrasonic signal emitted by the ultrasonic transducer 250 is adjusted. Preferably, a piezoelectric ceramic film is provided inside the ultrasonic transducer and is interconnected with the ultrasonic power supply through wires. The ultrasonic power supply can change the output power of the piezoelectric ceramic film inside the ultrasonic transducer 250 according to the processing requirements.

[0060] In a specific embodiment, as Figure 1 and Figure 2 shown, a feasible structure of the horn 300 is further provided. The outer diameter of the horn 300 gradually decreases from the end close to the ultrasonic transducer part 210 to the end close to the detection part 400. That is, in the direction from the top to the bottom of the horn 300, the outer diameter of the horn 300 gradually decreases to form a conical structure with a large top and a narrow bottom. In specific implementation, the cross-sectional area structure of the conical rod of the horn 300 can cause the vibration energy to gather at the small cross-sectional area end, thereby achieving the effect of amplitude amplification. And during the vibration process, the shape of the conical rod enables the stress to be distributed relatively evenly on the rod body. Due to the gradual change of the cross-sectional area, the stress concentration phenomenon is relatively less, reducing the risk of fatigue failure or damage of the rod body due to excessive local stress.

[0061] That is, the horn that amplifies the vibration amplitude concentrates and amplifies the tiny amplitude (about a few micrometers) output by the transducer through geometric shape design (such as stepped shape, exponential shape, etc.) to make it reach dozens to hundreds of micrometers required for actual processing. For example, the stepped horn can achieve an amplitude amplification of more than 20 times. The energy concentrating effect changes the cross-sectional area to gather the ultrasonic energy in a smaller area, improves the energy density, and enhances the processing efficiency. Impedance matching and energy transmission optimization As a bridge between the transducer and the tool head, the horn adjusts the mechanical impedance, reduces the resonant impedance, improves the electro-acoustic conversion efficiency, and extends the life of the transducer. Environment isolation and system fixation In a high-temperature or corrosive environment, the horn can isolate the transducer from the harsh conditions and fix the vibration system through a flange.

[0062] In one embodiment, the axial dimension of the horn 300 is an integer multiple of the ultrasonic signal wavelength. For example, if the ultrasonic signal wavelength is 10 mm, the axial dimension of the horn 300 is 20 mm, 30 mm, 40 mm, 50 mm, and other integer multiple dimensions. In specific implementation, when the axial dimension of the horn 300 is an integer multiple of the ultrasonic signal wavelength, the horn 300 will resonate with the ultrasonic signal emitted by the ultrasonic transducer part 210. In the resonance state, the horn 300 can more effectively absorb the ultrasonic energy and convert it into mechanical vibration, thereby improving the energy conversion efficiency and enhancing the vibration amplitude and output power of the horn 300.

[0063] That is, the horn is a tuning device that amplifies the amplitude through expansion and contraction. It must also resonate at a specific frequency to transfer ultrasonic energy from the transducer to the chuck. In order to function effectively, the horn must be an integer multiple of the wavelength of ultrasonic waves in its manufacturing material; otherwise, the amplitude is likely to be cancelled out.

[0064] It should be noted that a connecting flange 240 is fixedly connected between the ultrasonic transducer part 210 and the horn 300. The connecting flange 240 is used to fixedly connect the ultrasonic transducer part 210 and the horn 300. Preferably, the surface of the connecting flange 240 has threaded holes required for mutual installation with other devices, which facilitates disassembly and assembly. The connecting flange 240, the ultrasonic transducer 250, the first matching block 220, and the second matching block 230 can be combined into an integral whole through threaded connection or other fastening methods. This integral structure can improve the rigidity of the ultrasonic transducer part 210 and reduce energy loss during vibration.

[0065] In some cases, the ultrasonic transducer part 210 can be connected to other components through a flange or other connection structures for easy overall assembly and disassembly. This design facilitates the installation, maintenance, and replacement of the ultrasonic transducer part 210.

[0066] In one embodiment, the horn 300 can expand and contract axially.

[0067] In a specific embodiment, as Figure 1 and Figure 2 shown, a realizable structure of the chuck 500 is further provided. The chuck 500 is used for detachably connecting with the tool 600 to realize the detection of the tool 600. The chuck 500 is a micro tool fixture.

[0068] In some other embodiments, the chuck 500, the tool 600, and the detection part 400 are integrally formed. The detection part 400 is built into the tool 600 and abuts against the tool 600, which can not only improve the detection accuracy and save the detection space, but also facilitate the disassembly and replacement of the tool 600 to adapt to ultrasonic processing of different materials.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

[0070] The terms "first", "second", "third", "fourth", etc. (if any) in the description of this application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented, for example, in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0071] Finally, it should also be noted that in this text, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A tool holder for ultrasonic machining, characterized in that, It includes an ultrasonic transducer section, a horn, a detection section, and a chuck that are connected in sequence from top to bottom; The ultrasonic transducer section is used to emit a set ultrasonic signal; The horn is used to convert the ultrasonic signal emitted by the ultrasonic transducer section into mechanical vibration and transmit it to the chuck through the detection section; The detection section includes a housing, a support frame, and a sensor; the top of the housing is fixedly connected to the horn, and the bottom of the housing is fixedly connected to the chuck; the support frame is arranged inside the housing, and multi-directional hinges are provided on each inner wall side of the housing close to the support frame. The multi-directional hinges are connected to the sensor. The support frame is used to keep the sensor in contact with the inner wall of the housing all the time. The sensor is used to detect the cutting deformation of the housing in different dimensions; The chuck is used to install a tool.

2. The tool shank according to claim 1, characterized in that, The support frame includes a plurality of connection points, and the plurality of connection points are respectively arranged adjacent to each inner wall of the housing; The multi-directional hinges are connected to the connection points.

3. The tool shank according to claim 2, characterized in that, The support frame includes a plurality of support rods, and the plurality of support rods are connected to each other to form a polyhedron structure. The connection points are at the joints of the sides of the polyhedron structure.

4. The tool shank according to claim 3, characterized in that, The support rods are made of an elastic material so that the support frame elastically presses the sensor against the inner wall of the housing.

5. The tool shank according to any one of claims 1 to 4, characterized in that The multi-directional hinge is a ball hinge.

6. The tool shank according to any one of claims 1 to 4, characterized in that, The sensor is a piezoelectric film intelligent sensor.

7. The tool holder according to claim 1, characterized in that, It further includes a controller, and the controller is signal-connected to the sensor of the detection section and the ultrasonic transducer section. The controller is used to adjust the ultrasonic signal output by the ultrasonic transducer section according to the signal detected by the sensor.

8. The tool holder according to claim 1, characterized in that, The ultrasonic transducer section includes a first matching block, a second matching block, and an ultrasonic transducer; The first matching block is arranged on the side of the ultrasonic transducer close to the horn, and the first matching block is connected to the ultrasonic transducer; The second matching block is arranged on the side of the ultrasonic transducer away from the horn, and the second matching block is connected to the ultrasonic transducer; The first matching block and the second matching block are used to ensure the stability of the ultrasonic transducer section during ultrasonic vibration.

9. The tool holder according to claim 1, characterized in that, The outer diameter of the horn gradually decreases from the end close to the ultrasonic transducer section to the end close to the detection section.

10. The tool holder according to claim 9, wherein, The axial dimension of the horn is an integer multiple of the wavelength of the ultrasonic signal.

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