Energy transmission device, main shaft, ultrasonic machining equipment and machine tool

Abstract

The utility model belongs to the technical field of ultrasonic machining, and particularly discloses an energy transmission device, a main shaft, ultrasonic machining equipment and a machine tool. The energy transmission device comprises a mounting seat, a wireless transmitting unit and a wired transmitting unit, the mounting seat is provided with a step or a mounting groove for mounting the wireless transmitting unit, and the mounting seat is provided with a mounting position for mounting the wired transmitting unit; the wireless transmitting unit is used for forming radio transmission with the wireless receiving unit, the wired transmitting unit is used for forming wired electric transmission with the wired receiving unit, and the energy transmission device is installed at the front end of the main shaft. The energy transmission device can be installed on the main shaft, different ultrasonic cutter handles can be selected for the main shaft according to the machining method, the same main shaft can be provided with an ultrasonic cutter handle with a wireless receiving unit or a wired receiving unit, the main shaft is suitable for high-rotating-speed working conditions and high-power machining, and the problem that a conducting ring is seriously heated is solved. And therefore, the equipment cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic processing, in particular to an energy transmission device, a spindle, an ultrasonic processing device and a machine tool. Background Art

[0002] A transducer capable of converting electrical energy into mechanical vibration is arranged in an ultrasonic tool holder installed at the front end of a spindle, so as to perform ultrasonic processing on a workpiece. During the processing, an electrical signal needs to be transmitted to the ultrasonic tool holder rotating with the spindle. The common transmission of electrical signals is divided into wired transmission and wireless transmission. The direct connection structure of a slip ring is used for wired transmission, and a power supply end structure needs to be correspondingly installed on the spindle side, such as a transmitting seat (electrically connected in contact with the power consumption side in the receiving seat on the tool holder side). Wired transmission is applicable to low-speed working conditions; the wireless transmission composed of a wireless transmitting unit at the spindle end and a wireless receiving unit at the ultrasonic tool holder end is applicable to high-speed working conditions, that is, different spindle structures need to be applied for wired transmission and wireless transmission structures. However, the ultrasonic spindle with wired transmission has a problem of speed limit. When the speed of the ultrasonic spindle with wired transmission is too high, the slip ring will heat up seriously, affecting electrical transmission; while the power of the ultrasonic processing applicable to wireless transmission is limited, and high-power ultrasonic spindle processing cannot be carried out, resulting in the need to increase the number of processing machine tools when ultrasonic tool holders with two transmission methods need to be used in workpiece processing, and the cost is relatively high. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an energy transmission device, a spindle, an ultrasonic processing device and a machine tool, so as to solve the technical problem that ultrasonic tool holders with two transmission methods cannot be assembled and used on the same spindle and machine tool in the prior art.

[0004] To achieve the above purpose, the first aspect of the utility model provides an energy transmission device, which is installed at the front end of a spindle and includes: a mounting seat, a wireless transmitting unit and a wired transmitting unit, and the wireless transmitting unit and the wired transmitting unit are arranged on the mounting seat; the wireless transmitting unit is used to form radio transmission with a wireless receiving unit, and the wired transmitting unit is used to form wired electrical transmission with a wired receiving unit;

[0005] Moreover, an installation groove arranged around its own central axis is formed on the front end face or the inner side wall of the mounting seat, and the wireless transmitting unit is installed in the installation groove; alternatively, a step arranged around its own central axis is formed by the depression of the inner edge of the front end face of the mounting seat, the wireless transmitting unit is installed in the step, and the inner side face of the wireless transmitting unit is inclined outward from back to front;

[0006] In addition, an installation position for installing the wired transmitting unit is further arranged on the mounting seat.

[0007] Preferably, the front end of the wired transmitting unit extends forward of the wireless transmitting unit. The length of the wireless transmitting unit in the axial direction of the main shaft is the height of the wireless transmitting unit. The distance between the front end face of the wired transmitting unit and the plane where the foremost end of the wireless transmitting unit is located along the axial direction of the main shaft is the height of the wired transmitting unit. The height of the wired transmitting unit is greater than or equal to 3 times the height of the wireless transmitting unit.

[0008] Preferably, the height of the wired transmitting unit is less than or equal to 50 times the height of the wireless transmitting unit.

[0009] Preferably, the central angle of the mounting groove or step is θ, where π / 4 ≤ θ ≤ 2π.

[0010] Preferably, a connecting wire is provided in the mounting base. The connecting wire is electrically connected to the wired transmitting unit and the wireless transmitting unit respectively, and the connecting wire has a lead end extending outside the mounting base.

[0011] Preferably, the mounting position is a limiting groove provided on the front end face of the mounting base.

[0012] In a second aspect of the present invention, a main shaft is further provided, which includes the energy transmission device as described above.

[0013] In a third aspect of the present invention, an ultrasonic machining device is further provided, which includes the main shaft and an ultrasonic tool shank as described above. The ultrasonic tool shank is mounted on the main shaft, and the ultrasonic tool shank has the wireless receiving unit or the wired receiving unit.

[0014] Preferably, the ultrasonic tool shank is an ultrasonic cutting tool shank, an ultrasonic turning tool shank or an ultrasonic milling tool shank.

[0015] In a fourth aspect of the present invention, a machine tool is provided, which includes the ultrasonic machining device, an ultrasonic generator and a logic judgment module as described above. The ultrasonic generator is electrically connected to the wireless transmitting unit and the wired transmitting unit. The logic judgment module is in signal connection with the ultrasonic generator.

[0016] The energy transmission device, spindle, ultrasonic machining equipment, and machine tool provided by the present utility model have the following beneficial effects: The energy transmission device includes a mounting base, a wired transmitting unit, and a wireless transmitting unit. Both the wired transmitting unit and the wireless transmitting unit are arranged on the mounting base, so that the energy transmission device realizes the electrical transmission of the integration of wired and wireless. The energy transmission device is installed at the front end of the spindle. Different ultrasonic tool holders can be selected according to the machining method. The same spindle can be assembled with an ultrasonic tool holder with a wireless receiving unit or a wired receiving unit, or an ultrasonic tool holder with two receiving methods, so as to form an electrical transmission corresponding to the wireless transmitting unit and the wired transmitting unit on the spindle for machining the workpiece. Therefore, this spindle is suitable for both high-speed working conditions and high-power machining, and there will be no problem of serious heating of the slip ring. When applied to a machine tool, it can meet the purpose of machining parts on the same machine tool with ultrasonic tool holders using two different transmission methods, saving equipment costs. Moreover, the mounting base is provided with a mounting groove or step corresponding to the installation of the wireless transmitting unit and a mounting position for the installation of the wired transmitting unit, so that the wireless transmitting unit and the wired transmitting unit can be directly assembled on the mounting base, improving the assembly efficiency.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram after the wired transmitting unit of the spindle in the embodiment of the present utility model is connected to the wired receiving unit of the ultrasonic tool holder;

[0019] Figure 2 is a schematic structural diagram of the front end cover, wireless transmitting unit, and wired transmitting unit in the embodiment of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the front end cover in the embodiment of the present utility model;

[0021] Figure 4 is Figure 2 a schematic cross-sectional structure diagram of;

[0022] Figure 5 is a schematic state structure diagram when the spindle in the embodiment of the present utility model is assembled with an ultrasonic tool holder with a wireless receiving unit;

[0023] Figure 6 is a schematic structural diagram of the wireless transmitting unit arranged on the inner side wall of the front end cover in the embodiment of the present utility model;

[0024] Figure 7 is a schematic structural diagram of the wireless transmitting unit arranged on the step of the front end cover in the embodiment of the present utility model;

[0025] Figure 8 It is a schematic structural diagram of the front end cover of another embodiment of the present utility model.

[0026] In the figure, 100 is the mounting base; 130 is the front end cover; 131 is the mounting groove; 132 is the step; 133 is the limiting groove; 140 is the connecting wire; 141 is the lead end; 200 is the wireless transmitting unit; 300 is the wired transmitting unit; 400 is the ultrasonic knife handle; 410 is the wired receiving unit; 420 is the wireless receiving unit. Detailed implementation manners

[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0028] In the description of the present utility model, it should be understood that for the orientation description, such as up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0029] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, "greater than", "less than", "exceeding", etc. are understood as not including the present number, and "above", "below", "within", etc. are understood as including the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0030] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0031] Please refer to Figures 1 to 8 , and now an explanation is given for the energy transmission device provided by the embodiments of the present utility model.

[0032] Refer to Figures 1 to 3, the energy transmission device of the embodiment of the present utility model is installed at the front end of the main shaft, and it includes: a mounting base 100, a wireless transmission unit 200, and a wired transmission unit 300; the wireless transmission unit 200 and the wired transmission unit 300 are arranged on the mounting base 100; the wireless transmission unit 200 is used to form a radio transmission with the wireless receiving unit 420 on the ultrasonic tool handle; the wired transmission unit 300 is used to form a wired electrical transmission with the wired receiving unit 410 on the ultrasonic tool handle. That is, the energy transmission device installed on the main shaft can achieve a wired and wireless integrated electrical transmission. Different ultrasonic tool handles 400 can be selected according to the processing method or requirements. Then, the same main shaft can be assembled with an ultrasonic tool handle 400 having a wireless receiving unit 420 or an ultrasonic tool handle 400 having a wired receiving unit 410, or an ultrasonic tool handle 400 with two receiving methods (only one of the transmission methods is used during the processing) to correspondingly form an electrical transmission with the wireless transmission unit 200 and the wired transmission unit 300 for ultrasonic processing of the workpiece. Therefore, the main shaft is suitable for both high-speed working conditions and high-power processing, and there will be no problem of serious overheating of the slip ring, so as to process the workpiece and save equipment costs.

[0033] Among them, the mounting base 100 is located at the front end of the main shaft, and the wireless transmission unit 200 and the wired transmission unit 300 are installed on the mounting base 100. Electric power is transmitted through the energy transmission device at the front end of the main shaft. The front and rear directions of the main shaft are parallel to the axial direction of the main shaft, and the front and rear directions are as Figure 1 shown.

[0034] The mounting base 100 is used to fix the wireless transmission unit 200 and the wired transmission unit 300. The wireless transmission unit 200 of the mounting base 100 is a wireless transmission device; the wireless receiving unit 420 is a wireless receiving device. The wireless transmission unit 200 can form a path with the wireless receiving unit 420 through electromagnetic waves, so that the wireless transmission unit 200 can transmit electrical signals to the wireless receiving unit 420 to achieve the purpose of energy transmission.

[0035] The wired transmission unit 300 can be in direct contact electrical connection with the wired receiving unit 410 to achieve the purpose of electrical signal transmission.

[0036] An installation groove 131 around its own central axis is provided on the front end face or the inner side wall of the mounting base 100, and the wireless transmission unit 200 is arranged in the installation groove 131. As Figure 2 , Figure 3 , Figure 5As shown, the wireless transmission unit 200 is disposed in the mounting groove 131 on the front side of the mounting base 100. The corresponding wireless receiving unit 420 of the ultrasonic tool handle 400 is located on the front side of the mounting base 100. Along the axial direction of the main shaft, there is a certain gap between the wireless transmission unit 200 and the wireless receiving unit 420 to avoid friction between the two and ensure the radio transmission efficiency.

[0037] When the wireless transmission unit 200 is disposed in the mounting groove 131 on the inner sidewall of the mounting base 100, as Figure 6 shown, the corresponding wireless receiving unit 420 of the ultrasonic tool handle 400 is located inside the wireless transmission unit 200 for transmitting electrical signals.

[0038] In addition, in some embodiments, a step 132 is formed by the depression of the inner edge of the front end face of the mounting base 100 and is arranged around its own central axis. The wireless transmission unit 200 is disposed in the step 132, and the inner side face of the wireless transmission unit 200 is inclined outward from the rear to the front, as Figure 7 shown. The corresponding wireless receiving unit 420 of the ultrasonic tool handle 400 has a corresponding conical surface so that the wireless transmission unit 200 can better transmit electrical signals to the wireless receiving unit 420.

[0039] Moreover, in order to facilitate the installation of the wired transmission unit 300, a mounting position for installing the wired transmission unit 300 is further provided on the mounting base 100. That is, a mounting position for cooperating with the wired transmission unit 300 is reserved on the mounting base 100 so that the wired transmission unit 300 can be installed on the mounting base 100.

[0040] In some embodiments of the present invention, the front end of the wired transmission unit 300 extends forward of the wireless transmission unit 200, that is, the front end of the wired transmission unit 300 is located in front of the wireless transmission unit 200. The length of the wireless transmission unit 200 in the axial direction of the main shaft is the height of the wireless transmission unit 200, as Figure 4 shown as H1 in the figure; the distance between the front end face of the wired transmission unit 300 and the plane where the foremost end of the wireless transmission unit 200 is located along the axial direction of the main shaft is the height of the wired transmission unit 300, as Figure 4As shown in H2; the height of the wired transmitting unit 300 is greater than or equal to 3 times the height of the wireless transmitting unit 200. Since both the wired transmitting unit 300 and the wireless transmitting unit 200 are provided on the mounting base 100, the corresponding ultrasonic handle 400 can be provided with a wireless receiving unit 420 and a wired receiving unit 410. Since only a small gap is left between the wireless transmitting unit and the wireless receiving unit to ensure the efficiency of electrical transmission, in order to achieve the contact electrical transmission between the wired transmitting unit 300 and the wired receiving unit, the theoretical lower limit of the height of the wired transmitting unit 300 is one time the height of the wireless transmitting unit 200. However, it is also necessary to consider the air intake structure attached to the handle, the structure of the power supply side connection end of the wired transmitting unit 300, the structure of the power consumption side connection end, the handle body situation, etc. The height of the wired transmitting unit 300 is greater than or equal to 3 times the height of the wireless transmitting unit 200, so that the wired transmitting unit 300 can be connected to the wired receiving unit 410 without interfering with other existing structures. For the case where the wireless transmitting unit 200 is provided in the mounting groove 131, the height of the wireless transmitting unit 200 is the distance from the rear end face to the front end face of the wireless transmitting unit 200, and the height of the wired transmitting unit 300 is the distance from the front end face of the wired transmitting unit 300 to the front end face of the wireless transmitting unit 200.

[0041] For the scheme of arranging the mounting groove on the front end face or the inner side wall of the front end cover 130, the height of the wireless transmitting unit 200 is the distance from the rear end face to the front end face of the wireless transmitting unit 200, and the height of the wired transmitting unit 300 is the distance from the front end face of the wired transmitting unit 300 to the front end face of the wireless transmitting unit 200, as Figure 4 shown.

[0042] On the above basis, considering the stability of the connection between the rear end of the handle and the main shaft, the height of the wired transmitting unit 300 is less than or equal to 50 times the height of the wireless transmitting unit 200, so as to reduce the overall length of the ultrasonic handle 400 and make the connection between the ultrasonic handle 400 and the main shaft more stable.

[0043] In some embodiments of the present invention, the central angle of the mounting groove 131 or the step 132 is θ, where π / 4 ≤ θ ≤ 2π. θ is the angle of the central angle corresponding to the circumferential extension of the mounting groove 131 or the step 132 along the ultrasonic handle 400. That is, the corresponding wireless transmitting unit 200 is in a circular ring shape or a non-integral circular ring shape. Referring to Figure 2 and Figure 3 , the mounting groove 131 is a circular ring groove, and the corresponding wireless transmitting unit 200 is also in a circular ring shape. At this time, θ is 2π; referring to Figure 8, the installation groove 131 is in a quarter circular ring shape, and the corresponding wireless transmission unit 200 is also in a quarter circular ring shape. At this time, θ is π / 2. In addition, the shape of the corresponding wireless transmission unit 200 can be set according to the actual situation, and the central angle θ of the corresponding installation groove 131 or step 132 needs to meet the condition of π / 4 ≤ θ ≤ 2π.

[0044] In some embodiments of the present invention, the installation position is a limiting groove 133 provided on the front end face of the installation base 100. The limiting groove 133 is a groove, which can directly snap the wired transmission unit 300 into the limiting groove 133 to realize the positioning of the wired transmission unit 300 and facilitate the installation of the wired transmission unit 300 on the installation base 100. Of course, in addition, a limiting structure can also be provided on the installation base 100 to achieve the purpose of facilitating the installation of the wired transmission unit 300. For example, positioning protrusions are provided around the installation position, and corresponding positioning grooves are provided on the corresponding wired transmission unit 300.

[0045] In some embodiments of the present invention, referring to Figures 4 - 5 , the installation base 100 is provided with a connecting wire 140. The connecting wire 140 is electrically connected to the wired transmission unit 300 and the wireless transmission unit 200 respectively, and the connecting wire 140 has a lead end 141 extending to the outside of the installation base 100. That is, the installation base 100 integrates the wired transmission unit 300 and the wireless transmission unit 200, and uses the connecting wire 140 to connect with the wired transmission unit 300 and the wireless transmission unit 200, which is convenient for the connection of the circuit. Moreover, after the lead end 141 is led out, it can be connected to an ultrasonic generator so that the ultrasonic generator can transmit an electrical signal to the wired transmission unit 300 and the wireless transmission unit 200.

[0046] The present application also provides a main shaft. Referring to Figures 1 to 5 , the main shaft includes the above-mentioned energy transmission device. The energy transmission device is installed on the main shaft, and the energy transmission device can realize wired and wireless integrated electrical transmission. The main shaft can select different ultrasonic tool holders 400 according to the processing method and processing requirements. Then, the same main shaft can be assembled with an ultrasonic tool holder 400 with a wireless receiving unit 420 or an ultrasonic tool holder 400 with a wired receiving unit 410, or an ultrasonic tool holder 400 with two receiving methods can also be assembled to form an electrical transmission corresponding to the wireless transmission unit 200 and the wired transmission unit 300 on the main shaft, so as to process the workpiece.

[0047] In some embodiments of the present invention, such as Figure 2As shown, the mounting base 100 is the front end cover 130; the front end cover 130 is arranged at the front end of the main shaft, and the wireless transmission unit 200 and the wired transmission unit 300 are arranged on the front end cover 130. An installation hole matching the rear end of the ultrasonic tool handle is arranged at the front end of the main shaft, so that the front end of the main shaft is connected to the ultrasonic tool handle 400, facilitating the alignment of the wired transmission unit 300 and the wireless transmission unit 200 with the corresponding wired receiving unit 410 and wireless receiving unit 420 of the ultrasonic tool handle 400. The main shaft of the present application is provided with a wired transmission unit 300 and a wireless transmission unit 200, and different ultrasonic tool handles 400 can be selected according to the processing method and requirements. Then, the same main shaft can be assembled with an ultrasonic tool handle 400 having a wireless receiving unit or an ultrasonic tool handle 400 having a wired receiving unit, or an ultrasonic tool handle having both receiving methods (only one of the transmission methods is used during the processing) to process the workpiece. When applied to a machine tool, it can meet the purpose of using ultrasonic tool handles 400 with two different transmission methods to process parts on the same machine tool, saving equipment costs.

[0048] The present application also provides an ultrasonic processing device. Referring to Figures 1 to 5 , the ultrasonic processing device includes the above-mentioned main shaft and the ultrasonic tool handle 400. The ultrasonic tool handle 400 is installed on the main shaft, and the ultrasonic tool handle 400 is provided with a wireless receiving unit 420 or a wired receiving unit 410. The front end of the main shaft is connected to the ultrasonic tool handle 400 to drive the ultrasonic tool handle 400 to rotate. The main shaft is provided with a wired transmission unit 300 and a wireless transmission unit 200, and different ultrasonic tool handles 400 can be selected according to the processing method and requirements. Then, the same main shaft can be assembled with an ultrasonic tool handle 400 having a wireless receiving unit 420 or an ultrasonic tool handle 400 having a wired receiving unit 410, or an ultrasonic tool handle 400 having both receiving methods to form an electrical transmission corresponding to the wireless transmission unit 200 and the wired transmission unit 300 on the main shaft to process the workpiece. When applied to a machine tool, it can meet the purpose of using ultrasonic tool handles 400 with two different transmission methods to process parts on the same machine tool, saving equipment costs.

[0049] In some embodiments of the present invention, the ultrasonic tool handle 400 is an ultrasonic cutting tool handle or an ultrasonic milling tool handle, an ultrasonic turning tool handle. That is, the ultrasonic tool handle 400 can be a straight-edge tool, a disc tool, a milling tool, a turning tool, etc. to perform different workpiece processing.

[0050] The present application also provides a machine tool, which includes the above ultrasonic machining equipment, an ultrasonic generator, and a logic judgment module; the ultrasonic generator is electrically connected to the wireless transmitting unit 200 and the wired transmitting unit 300; the logic judgment module is signal-connected to the ultrasonic generator. The logic judgment module can judge whether the ultrasonic tool holder 400 installed on the spindle has a wireless receiving unit 420 or a wired receiving unit 410, so as to control the ultrasonic generator to output corresponding electrical signals to the wireless transmitting unit 200 or the wired transmitting unit 300. The logic judgment module can be made of a PLC controller or an MCU control chip.

[0051] In addition, the control system of the machine tool can also communicate with the ultrasonic generator to judge the type of the ultrasonic tool holder 400 installed on the spindle, so as to output corresponding electrical signals (the type of the tool holder can be determined by detecting the impedance, phase, and current of the signal feedback).

[0052] The spindle of the machine tool of the present application is provided with a wired transmitting unit 300 and a wireless transmitting unit 200. The spindle can select different ultrasonic tool holders 400 according to the machining method. Then, the same spindle can be assembled with an ultrasonic tool holder 400 having a wireless receiving unit 420 or a wired receiving unit 410, or an ultrasonic tool holder 400 having two receiving methods, so that the spindle can machine the workpiece, corresponding to form an electrical transmission with the wireless transmitting unit and the wired transmitting unit, to meet the purpose that the same machine tool can use ultrasonic tool holders 400 with two different transmission methods to machine parts, saving equipment costs; and, the mounting seat 100 is provided with a mounting groove 131 or a step 132 corresponding to the wireless transmitting unit 200 and a mounting position for the wired transmitting unit 300, so that the wireless transmitting unit 200 and the wired transmitting unit 300 can be directly assembled on the mounting seat 100, improving the assembly efficiency.

[0053] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. An energy transmission device, which is installed at the front end of the main shaft, is characterized in that, Comprising: a mounting base, a wireless transmitting unit, and a wired transmitting unit, wherein the wireless transmitting unit and the wired transmitting unit are arranged on the mounting base; the wireless transmitting unit is used to form a radio transmission with a wireless receiving unit, and the wired transmitting unit is used to form a wired transmission with a wired receiving unit; moreover, an installation groove arranged around its own central axis is formed on the front end face or the inner side wall of the mounting base, and the wireless transmitting unit is installed in the installation groove; alternatively, a step arranged around its own central axis is formed by the depression of the inner edge of the front end face of the mounting base, the wireless transmitting unit is installed in the step, and the inner side face of the wireless transmitting unit is inclined outward from back to front; in addition, a mounting position for installing the wired transmitting unit is further provided on the mounting base.

2. The energy transmission device according to claim 1, wherein The front end of the wired transmitting unit extends forward of the wireless transmitting unit. The length of the wireless transmitting unit in the axial direction of the main shaft is the height of the wireless transmitting unit. The distance between the front end face of the wired transmitting unit along the axial direction of the main shaft and the plane where the foremost end of the wireless transmitting unit is located is the height of the wired transmitting unit. The height of the wired transmitting unit is greater than or equal to 3 times the height of the wireless transmitting unit.

3. The energy transmission device according to claim 2, wherein, The height of the wired transmitting unit is less than or equal to 50 times the height of the wireless transmitting unit.

4. The energy transmission device according to claim 1, wherein The central angle of the installation groove or the step is θ, where π / 4 ≤ θ ≤ 2π.

5. The energy transmission device according to claim 1, wherein The mounting position is a limiting groove arranged on the front end face of the mounting base.

6. The energy transmission device according to claim 1, characterized in that A connecting wire is arranged in the mounting base. The connecting wire is electrically connected to the wired transmitting unit and the wireless transmitting unit respectively, and the connecting wire has a lead end extending to the outside of the mounting base.

7. A main shaft, characterized in that, Comprising the energy transmission device according to any one of claims 1 to 6.

8. An ultrasonic machining device, characterized in that, Comprising the main shaft and an ultrasonic tool shank according to claim 7; the ultrasonic tool shank is mounted on the main shaft, and the ultrasonic tool shank has the wireless receiving unit or the wired receiving unit.

9. The ultrasonic processing equipment according to claim 8, characterized in that, The ultrasonic tool shank is an ultrasonic cutting tool shank, an ultrasonic turning tool shank, or an ultrasonic milling tool shank.

10. A machine tool, characterized in that, Comprising the ultrasonic processing equipment, an ultrasonic generator, and a logic judgment module according to any one of claims 8 to 9; the ultrasonic generator is electrically connected to the wireless transmitting unit and the wired transmitting unit; the logic judgment module is signal-connected to the ultrasonic generator.

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