Power supply device and method for rotary machining cutter handle

Abstract

The invention discloses a rotary machining cutter handle power supply device and method, and belongs to the field of machine tool machining equipment. The rotary processing cutter handle power supply device controls an inductance coil for power generation to connect or disconnect a circuit through a switch unit so as to adjust the power generation power of a self-powered system; acquiring a parameter representing the generated power of the self-powered system and calculating the actual generated power by using an acquisition unit; a control unit is adopted to adjust the number of inductance coils connected to a circuit by controlling a switch unit on the basis of a preset strategy, target power and actual power generation power information, so that power provided for electric equipment meets requirements. Meanwhile, at the extreme rotating speed, the battery can be used for buffering, absorbing or supplementing energy. The battery is charged when the minimum generated power is still higher than the target power at the ultra-high rotating speed, and the battery is discharged when the maximum generated power is still lower than the target power at the ultra-low rotating speed. The power generation power can be effectively controlled by controlling the number of the coils.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of machine tool processing equipment, in particular to a rotating processing tool holder power supply device and method. BACKGROUND

[0002] With the development of modern manufacturing industry, the monitoring and control of machining center in the metal processing process becomes more and more important. As a device capable of real-time monitoring of the processing process, the power supply problem of intelligent tool holder has always been a key factor restricting its application.

[0003] Currently, there are mainly two ways to supply power to the intelligent tool holder: one is the traditional battery power supply method, and the other is the power supply method based on electromagnetic induction. Although the battery power supply method has a simple structure, due to the limited capacity of the battery, the intelligent tool holder has a short endurance time, and needs to be frequently replaced or charged, which cannot meet the demand of long-time continuous processing. The power supply method based on electromagnetic induction generates electric energy in the rotating process to provide continuous power supply for the intelligent tool holder.

[0004] The main problem existing in the prior art is that the power supply device currently applied to the intelligent tool holder cannot adaptively adjust the power generation according to different working conditions. Specifically, when cutting metal with low speed and large torque, the power supply device based on electromagnetic induction often cannot generate enough electric energy due to the low speed of the main shaft, resulting in that the intelligent tool holder cannot work normally; while in high-speed precision cutting, excess electric energy is generated, which not only causes energy waste, but also more seriously, the excess energy is converted into heat energy, resulting in a series of problems such as circuit failure, solidified glue failure, mechanical part thermal expansion, etc., which seriously affects the machining precision and equipment life. In addition, the power supply device in the prior art mostly lacks an effective power regulation mechanism, and cannot intelligently adjust the power generation according to the actual power demand, so it is difficult to meet the power supply demand of the intelligent tool holder under different working conditions. SUMMARY

[0005] In view of the above problems, the present application provides a rotating processing tool holder power supply device and method which can intelligently adjust the power generation according to the actual power demand to meet the power supply demand of the intelligent tool holder under different working conditions.

[0006] The present application provides a rotating processing tool holder power supply device, comprising: at least two inductors, a tool holder rotating assembly, a magnet mounting plate and a main shaft box connecting bracket; the inductor is installed in the collar of the tool holder rotating assembly for generating electric energy through electromagnetic induction, the magnet mounting plate is located at the lower part of the main shaft box connecting bracket and surrounds the periphery of the inductor for generating a first magnetic field;

[0007] A switch unit is located in the collar and connected with the inductor for adjusting the power provided by the power supply device by controlling at least one inductor to be connected or disconnected to the circuit.

[0008] An acquisition unit, located inside the collar and connected to the switching unit, is used to acquire parameters characterizing the power generation power of the power supply device;

[0009] The control unit, located within the collar, connects the acquisition unit and the switching unit. It is used to adjust the number of inductors in the circuit by controlling the switching unit based on a preset strategy, target power, and power information acquired by the acquisition unit, so that the power supplied to the electrical equipment meets the requirements.

[0010] Optionally, at least two of the inductor coils include a first coil L6 and a second coil;

[0011] The switching unit includes: a first capacitor C12, a second capacitor C18, a third capacitor C20, a first rectifier module, and a second rectifier module;

[0012] The first rectifier module includes: a first rectifier bridge and a capacitor C21. One end of the capacitor C21 is connected to one end of the first coil L6, and the other end of the capacitor C21 is connected to the other end of the first coil L6. The first input terminal of the first rectifier bridge is connected to one end of the capacitor C21 and one end of the first coil L6. The second input terminal of the first rectifier bridge is connected to the other end of the capacitor C21 and the other end of the first coil L6. The positive output terminal of the first rectifier bridge is connected to the first output terminal of the second rectifier module, and the negative output terminal of the first rectifier bridge is connected to the power supply ground.

[0013] The first capacitor C12, the second capacitor C18, and the third capacitor C20 are connected in parallel between the first voltage and the power supply ground.

[0014] The second rectifier module includes: a second rectifier bridge, a fourth capacitor C11, a third rectifier bridge, and a switching circuit;

[0015] The first input terminal of the second rectifier bridge is connected to one end of the second coil, and the second input terminal of the second rectifier bridge is connected to the other end of the second coil. One end of the switching circuit is connected to the positive output terminal of the second rectifier bridge, and the negative output terminal of the second rectifier bridge is connected to the second input terminal of the third rectifier bridge and one end of the fourth capacitor. The other end of the fourth capacitor is connected to the first input terminal of the third rectifier bridge and the other end of the switching circuit. The positive output terminal of the third rectifier bridge is connected to the first voltage, and the negative output terminal of the third rectifier bridge forms the first output terminal of the second rectifier module, which is connected to the positive output terminal of the first rectifier bridge.

[0016] Optionally, at least two of the inductor coils include at least two second coils; the switching unit includes at least two second rectifier modules; the number of rectifier modules corresponds to the number of second coils, each rectifier module corresponds to one second coil, and the second coil is connected to the corresponding rectifier module; at least two second rectifier modules are connected in series between the first voltage and the positive output terminal of the first rectifier bridge.

[0017] Optionally, the acquisition unit includes:

[0018] A filtering module, connected to the switching unit, is used to filter the first voltage to obtain a second voltage;

[0019] An amplification module, connected to the filtering module, is used to amplify the second voltage to obtain a third voltage;

[0020] The acquisition module, connected to the switching unit, is used to acquire the output current of all the inductor coils;

[0021] The processing module, connected to the amplification module and the acquisition module, is used to generate the power generation based on the third voltage and the output current.

[0022] Optional, also includes:

[0023] The battery is located inside the collar and is connected to the control unit.

[0024] Optional, also includes:

[0025] A heat dissipation load, located on the outer surface of the collar and connected to the control unit, is used to dissipate heat from the collar.

[0026] Optionally, the preset strategy is:

[0027] When the power generation exceeds the target power, the battery is charged, and at least one of the inductors is disconnected via the switching unit; or

[0028] When the power generation is greater than the target power, the battery is charged and the heat dissipation load is powered, and the switching unit controls the disconnection of at least one of the inductor coils;

[0029] When the power generation is less than the target power, the battery is controlled to supply power to the tool holder rotation assembly, and at least one of the inductor coils is energized through the switching unit.

[0030] Optionally, a form is provided, which is a two-dimensional table with the number of energized coils and the tool holder rotation speed as variables and the power generation as the result;

[0031] The preset strategy is as follows:

[0032] The tool holder rotation speed is obtained, and based on the tool holder rotation speed, the number of energized coils, and the form, the power generation is determined, and the battery charge is obtained;

[0033] When the power generation is greater than the target power and the battery charge is lower than the preset voltage, the battery is charged; when the power generation is greater than the target power and the battery charge is equal to or greater than the preset voltage, the heat dissipation load is powered.

[0034] When the power generation is less than or equal to the target power, the battery is controlled to supply power to the tool holder rotation assembly, and at least one of the unpowered inductors is powered on by the switching unit.

[0035] This application provides a method for powering a rotary machining tool holder, applied to the aforementioned rotary machining tool holder power supply device, comprising:

[0036] Obtain the power generation capacity of the power supply device;

[0037] Based on the preset strategy, target power, and acquired power information, the number of inductors connected to the circuit is adjusted by controlling the switching unit so that the power supplied to the electrical equipment meets the demand.

[0038] Optionally, the preset strategy is:

[0039] When the power generation exceeds the target power, the battery is charged, and at least one of the inductors is disconnected via the switching unit; or

[0040] When the power generation is greater than the target power, the battery is charged and power is supplied to the heat dissipation load, and the switching unit controls the disconnection of at least one of the inductor coils;

[0041] When the power generation is less than the target power, the battery is controlled to supply power to the tool holder rotation assembly, and at least one of the inductor coils is energized through the switching unit.

[0042] The beneficial effects of the above technical solution are as follows:

[0043] In this technical solution, the rotary machining tool holder power supply device regulates the power supplied by controlling at least one inductor coil to connect or disconnect from the circuit via a switching unit; an acquisition unit acquires parameters characterizing the power generation of the power supply device; and a control unit, based on a preset strategy, target power, and power information acquired by the acquisition unit, controls the number of inductor coils connected to the circuit by controlling the switching unit to ensure that the power supplied to the electrical equipment meets the requirements. This application effectively controls the generated power by controlling the number of coils, overcoming the drawback of electromagnetic induction-based power supply methods that are highly dependent on the spindle rotation speed. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of one embodiment of the power supply device for rotary machining tool holders described in this application;

[0045] Figure 2 This is a block diagram of the power supply device for the rotary machining tool holder described in this application;

[0046] Figure 3 This is a circuit diagram of the switching unit and the inductor coil.

[0047] Figure 4 This is an internal circuit diagram of the control unit described in this application;

[0048] Figure 5 This is a flowchart illustrating one embodiment of the power supply method for the rotary machining tool holder described in this application. Detailed Implementation

[0049] The advantages of this application are further illustrated below with reference to the accompanying drawings and specific embodiments.

[0050] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0051] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0052] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0053] In the description of this application, it should be understood that the numerical labels before the steps do not indicate the order of the steps, but are only used to facilitate the description of this application and to distinguish each step, and therefore should not be construed as a limitation of this application.

[0054] Example 1

[0055] This embodiment addresses the problems existing in the application of intelligent toolholders for monitoring the metal processing process in machining centers. These problems include the limited and unreliable battery life of traditional battery-powered methods, and the complete reliance on spindle rotation speed in electromagnetic induction-based power supply methods. This leads to insufficient power supply during low-speed, high-torque metal cutting, and excessive energy conversion during high-speed precision cutting, resulting in energy waste and high-temperature threats. (See reference...) Figure 1 and Figure 2 As shown, a rotary machining tool holder power supply device includes at least two inductor coils, a tool holder rotation assembly 1, a magnet mounting plate 2, and a spindle box connecting bracket 3. The inductor coils are installed within the collar 4 of the tool holder rotation assembly 1 and are used to generate electrical energy through electromagnetic induction. The magnet mounting plate 2 is located at the lower part of the spindle box connecting bracket 3 and surrounds the inductor coils, used to generate a first magnetic field.

[0056] See Figure 2 As shown, the rotary machining tool holder power supply device also includes a switching unit 5, an acquisition unit 6, and a control unit 7, all located within the collar 4. The switching unit 5 is connected to an inductor coil and is used to adjust the power supplied by the power supply device by controlling at least one inductor coil to connect to or disconnect the circuit. The acquisition unit 6 is connected to the switching unit 5 and is used to acquire parameters characterizing the power output of the power supply device. The control unit 7 is connected to the acquisition unit 6 and the switching unit 5 and is used to adjust the number of inductor coils connected to the circuit by controlling the switching unit 5 based on a preset strategy, a target power, and the power information acquired by the acquisition unit 6, so that the power supplied to the electrical equipment meets the demand.

[0057] For specific implementation details, please refer to [link / reference]. Figure 3 As shown, at least two inductor coils include a first coil L6 and a second coil. The switching unit 5 includes a first capacitor C12, a second capacitor C18, a third capacitor C20, a first rectifier module 51, and a second rectifier module 52.

[0058] The first rectifier module 51 includes a first rectifier bridge D23 and a capacitor C21. One end of capacitor C21 is connected to one end (Coil4_A) of the first coil L6, and the other end of capacitor C21 is connected to the other end (Coil4_B) of the first coil L6. The first input terminal of the first rectifier bridge D23 is connected to one end of capacitor C21 and one end of the first coil L6, and the second input terminal of the first rectifier bridge D23 is connected to the other end of capacitor C21 and the other end of the first coil L6. The positive output terminal of the first rectifier bridge D23 is connected to the first output terminal of the second rectifier module 52, and the negative output terminal of the first rectifier bridge D23 is connected to the power ground (GND).

[0059] The first capacitor C12, the second capacitor C18, and the third capacitor C20 are connected in parallel to the first voltage V. dc A filter circuit is formed between the power supply ground (GND) and the output voltage to stabilize the output voltage.

[0060] The second rectifier module 52 includes a second rectifier bridge D18, a fourth capacitor C11, a third rectifier bridge D17, and a switching circuit 521. The first input terminal of the second rectifier bridge D18 is connected to one end (Coil1_A) of the second coil L3, and the second input terminal of the second rectifier bridge D18 is connected to the other end (Coil1_B) of the second coil L3. One end (Coil1_O1) of the switching circuit 521 is connected to the positive output terminal of the second rectifier bridge D18, and the negative output terminal of the second rectifier bridge D18 is connected to the second input terminal of the third rectifier bridge D17 and one end of the fourth capacitor. The other end of the fourth capacitor is connected to the first input terminal of the third rectifier bridge D17 and the other end (Coil1_O2) of the switching circuit 521. The positive output terminal of the third rectifier bridge D17 is connected to a first voltage V. dc The negative output terminal of the third rectifier bridge D17 forms the first output terminal of the second rectifier module 52 and is connected to the positive output terminal of the first rectifier bridge D23.

[0061] In a preferred embodiment, see Figure 3 As shown, at least two inductor coils include at least two second coils; the switching unit 5 includes at least two second rectifier modules 52; the number of rectifier modules corresponds to the number of second coils L3, each rectifier module corresponds to one second coil, and the second coil is connected to the corresponding rectifier module; at least two second rectifier modules 52 are connected in series with a first voltage V. dc Between the positive output terminal of the first rectifier bridge D23 and the positive output terminal of the second coil. This configuration allows the power supply to adjust the power generation more flexibly, and more precise power regulation can be achieved by controlling different numbers of second coils connected to the circuit.

[0062] See Figure 3As shown, the inductor coil may include four coils (L3, L4, L5, and L6), wherein three coils L3, L4, and L5 are respectively connected to three second rectifier modules 52; by controlling the closing of the electromagnetic relays (K2, K3, and K4) in the control switch circuit 521, it is possible to control whether the coils (L3, L4, and L5) are connected to the power supply device for power supply. It should be noted that when all the inductor coils are connected in series to the power supply device, the first output can be higher.

[0063] The acquisition unit 6 includes a filtering module, an amplification module, a data acquisition module, and a processing module. The filtering module is connected to the switching unit 5 and is used to filter the first voltage V. dc Filtering is performed to obtain the second voltage, effectively reducing voltage fluctuations and noise interference. The amplification module, connected to the filtering module, amplifies the second voltage to obtain the third voltage, facilitating subsequent processing and analysis. The acquisition module, connected to switch unit 5, acquires the output current I of all inductors. dc The processing module connects to the amplification module and the acquisition module, and is used to generate power output based on the third voltage and output current. In this way, the acquisition unit 6 can accurately monitor the actual power output status of the power supply device.

[0064] Specifically, the process of calculating the power generation is as follows: for the first voltage V dc and output current I dc High-speed (100kHz) data acquisition, integration calculation, and updating of power generation in 10-cycle increments are performed using the following formula:

[0065] The calculation process for the periodic value T is as follows: V is filtered by a high-pass filter. dc Then we obtain Udc_ac, where Udc_ac represents V. dc The AC voltage Udc_ac is amplified so that |Udc_ac|max is greater than the reference voltage Uref. Udc_ac and Uref are then compared to the positive and negative inputs of a comparator, and the comparator outputs a 0 / 1 digital signal. The microcontroller samples this digital signal and times it to obtain the period value. Note that the period value corresponds one-to-one with the rotational speed; obtaining the period value is equivalent to obtaining the rotational speed value. Power generation is strongly positively correlated with rotational speed, and also strongly positively correlated with the reciprocal of the period.

[0066] The power supply unit for the rotary machining tool holder may also include a battery, located within the collar 4 and connected to the control unit 7. The battery can provide backup power when electromagnetic induction power is insufficient, ensuring the continuity and stability of power supply.

[0067] In addition, the power supply device may also include a heat dissipation load located on the outer surface of the collar 4 and connected to the control unit 7 for heat dissipation of the collar. The heat dissipation load, located on the outer surface of the tool holder collar 4, generates strong convection during machining, resulting in good heat dissipation. When the power supply device is working, the inductor coil and rectifier circuit generate heat. The heat dissipation load can consume excess electrical energy and convert it into heat energy for dissipation, preventing the internal temperature of the collar 4 from becoming too high and affecting the normal operation of electronic components.

[0068] Control unit 7 operates based on a preset strategy.

[0069] In one embodiment, the preset strategy is as follows: when the power generation is greater than the target power, the battery is charged and at least one inductor coil is disconnected by the switching unit 5; or when the power generation is greater than the target power, the battery is charged and power is supplied to the heat dissipation load, and at least one inductor coil is disconnected by the switching unit 5; when the power generation is less than the target power, the battery is controlled to supply power to the tool holder rotation assembly 1, and at least one inductor coil is energized by the switching unit 5.

[0070] This pre-set strategy enables the power supply device to intelligently adjust its power generation according to actual needs. When there is excess power generated, it can charge the battery or dissipate heat through a heat dissipation load; when there is insufficient power, the battery can supplement the power supply to ensure the normal operation of the tool holder rotating assembly 1. Through this dynamic adjustment mechanism, the power supply device can maintain optimal efficiency under different operating conditions, extend battery life, and ensure a stable and reliable power supply to the tool holder rotating assembly 1.

[0071] In another embodiment, a form is provided, which is a two-dimensional table with the number of energized coils and the tool holder rotation speed as variables and the power generation as the result; the preset strategy is:

[0072] The tool holder rotation speed is obtained, and based on the tool holder rotation speed, the number of energized coils, and the form, the power generation is determined, and the battery charge is obtained;

[0073] When the power generation is greater than the target power and the battery charge is lower than the preset voltage, the battery is charged; when the power generation is greater than the target power and the battery charge is equal to or greater than the preset voltage, the heat dissipation load is powered.

[0074] When the power generation is less than or equal to the target power, the battery is controlled to supply power to the tool holder rotation assembly, and at least one of the unpowered inductors is powered on by the switching unit.

[0075] In this embodiment, the power generation of different numbers of energized coils participating in power generation is obtained by looking up the form and fitting the curve at the tool holder speed.

[0076] If, at the current toolholder speed, the maximum power output (with all coils connected) exceeds the target power: 1) If the battery charge is below the preset value, maximum power output will be used to supply power to the system while simultaneously charging the battery; 2) If the battery does not require charging, the minimum power output (greater than the target power) will be selected to supply power to the system while simultaneously dissipating heat through the heat dissipation load. If, at the current toolholder speed, the maximum power output (with all coils connected) is less than or equal to the target power, maximum power output will be used, with the battery automatically supplementing the insufficient power as a backup energy source.

[0077] It should be noted that the system in the embodiments refers to a self-powered system or a tool holder rotation assembly.

[0078] In this embodiment, a form (see Table 1) can be preset. This form is a two-dimensional table with the number of energized coils and the rotational speed of the tool holder as variables and the power generation as the result, and is stored in non-volatile memory.

[0079] Table 1

[0080]

[0081] Based on the form, control unit 7 generates fitting curves for power generation and rotational speed under different numbers of coils. These curves are segmented according to different rotational speed ranges and fitted as a linear function. For example, when the number of energized coils is 1, the power generation fitting for the speed range from 1 to 2 is as follows:

[0082] The optimization form and fitting curve are continuously updated based on P, representing the actual power generation (tool holder speed, number of energized coils). Therefore, at any given time and any speed, the control unit 7 can calculate a power generation close to the actual power generation under different numbers of coils. When the maximum power generation (all coils working) exceeds the system's power requirement, the battery status is assessed first and the battery is charged.

[0083] When the power generation is greater than the target power or at high speed, the priority of the preset strategy is: prioritize power supply to the power supply device → power supply to the battery → power supply to the heat dissipation load. The heat dissipation load dissipates heat through thermal convection to ensure normal system temperature.

[0084] When the power generation is less than the target power or at a low speed, the control battery provides supplementary power to the power supply device.

[0085] In practical applications, when the tool holder rotating assembly 1 starts to rotate, the magnetic field generated by the magnet mounting plate 2 moves relative to the inductor coil, inducing a current in the inductor coil through the principle of electromagnetic induction. These induced currents are converted into direct current by the rectifier module, providing power to the electronic equipment inside the collar 4. The control unit 7 monitors the generated power in real time through the acquisition unit 6 and controls the switching unit 5 to adjust the number of inductors connected to the circuit according to a preset strategy, thereby achieving precise power control.

[0086] See Figure 4 This is a circuit diagram for the self-powered power management of control unit 7. Arrows represent the direction of energy flow; solid lines represent deterministic energy flow, and dashed lines represent uncertain energy flow.

[0087] After rectification, the inductor coil first passes through a buck circuit (BUCK) to step down to a relatively stable 5V. Then, it is further processed by a chargeer to obtain the system voltage SYS, which is then connected to the battery for charging and discharging. The chargeer can be considered as a buck circuit consisting of Q1, Q2, coil1, and an external capacitor, plus a charge / discharge direction selection circuit consisting of back-to-back MOSFETs Q3 and Q4. The combined function of Q3 and Q4 is to select whether to charge the battery or discharge it to the system voltage SYS. The system voltage SYS is a non-fixed potential between 5V and the battery voltage (BATTERY). Therefore, it is again regulated to Vout = 3.3V by a buck-boost converter circuit to supply power to the MCU system. The system voltage SYS can be connected to an external heat dissipation load R. load To release excess energy.

[0088] In this embodiment, the rotary machining tool holder power supply device adjusts the power supplied by controlling at least one inductor coil to connect or disconnect from the circuit via the switching unit 5; the acquisition unit 6 acquires parameters characterizing the power generation of the power supply device; and the control unit 7, based on a preset strategy, target power, and the power information acquired by the acquisition unit 6, adjusts the number of inductor coils connected to the circuit by controlling the switching unit 5, so that the power supplied to the electrical equipment meets the requirements. This application can effectively control the power generation by controlling the number of coils, overcoming the defect of the electromagnetic induction power supply method being highly dependent on the spindle rotation speed.

[0089] This embodiment achieves long-term, efficient, and continuous power supply to the machining center's intelligent monitoring tool holder by preventing the formation of a circumferentially non-uniform magnetic field around the tool holder and by configuring an induction coil, magnetic core, core processing circuit, and small-volume backup battery in the tool holder's mounting ring. This application effectively controls the power generation by controlling the number of coils and dissipates the additional generated energy through an electronic heat dissipation load on the outer surface of the ring, effectively solving the problems of limited battery life and unreliability in traditional battery power supply. Furthermore, the preset strategy employed in this application can cope with unstable power generation at different speeds by acquiring V at high speed. dc and I dc The system performs integral calculations to determine the generated power, establishing a two-dimensional table with the number of coils and rotational speed as variables and the generated power as the result, thus realizing a multi-path energy regulation mechanism. At low speeds, the battery acts as a supplementary power source to ensure normal power supply, solving the problem of insufficient power supply during low-speed, high-torque cutting. At high speeds, an additional heat dissipation load dissipates heat through thermal convection, ensuring normal system temperature and avoiding threats such as circuit failure, adhesive failure, and mechanical component expansion caused by excessive energy and high temperatures. A self-powered power management circuit realizes the rectification, step-down, charge / discharge control, and regulated output of electrical energy, overcoming the shortcomings of electromagnetic induction-based power supply methods that are highly dependent on spindle rotation speed.

[0090] Example 2

[0091] See Figure 5 A method for supplying power to a rotary machining tool holder, applied to the aforementioned rotary machining tool holder power supply device, includes the following steps:

[0092] S1. Obtain the power generation capacity of the power supply device;

[0093] In this step, the acquisition unit 6 described in Embodiment 1 acquires parameters characterizing the power generation of the power supply device. Specifically, the filtering module of the acquisition unit 6 filters the first voltage Vdc to obtain the second voltage, the amplification module amplifies the second voltage to obtain the third voltage, the acquisition module acquires the output current of all inductors, and the processing module generates power generation information based on the third voltage and the output current.

[0094] S2. Based on the preset strategy, target power and acquired power information, the number of inductors in the circuit is adjusted by controlling the switching unit 5 so that the power supplied to the electrical equipment meets the requirements.

[0095] In this embodiment, the specific implementation of the preset strategy is as follows:

[0096] When the generated power exceeds the target power, the control unit 7 instructs the switching unit 5 to control at least one inductor coil to disconnect, and the excess electrical energy is used to charge the battery. In this case, the excess electrical energy is used to charge the battery, improving the system's energy utilization efficiency.

[0097] Alternatively, when the generated power exceeds the target power, the control unit 7 instructs the switching unit 5 to disconnect at least one inductor coil, and simultaneously use the excess electrical energy to charge the battery and power the heat dissipation load. This method can both charge the battery and dissipate some energy through the heat dissipation load to prevent the internal temperature of the collar 4 from becoming too high.

[0098] When the generated power is less than the target power, the control unit 7 instructs the battery to supply power to the tool holder rotation assembly 1, and at the same time controls at least one previously disconnected inductor coil to be re-energized via the switching unit 5. This increases the power output, while the battery provides auxiliary power to ensure a stable power supply to the tool holder rotation assembly 1.

[0099] In practical applications, the control unit 7 continuously monitors the power output of the power supply and compares it with the preset target power, dynamically adjusting the number of inductors connected. When the tool holder rotates at a high speed, the electrical energy generated by electromagnetic induction may exceed the demand. In this case, the control unit 7 will disconnect some inductors to avoid energy waste. When the tool holder rotates at a lower speed or the heat dissipation load increases, the control unit 7 will connect more inductors and, if necessary, activate battery auxiliary power supply to ensure stable system operation.

[0100] Through this intelligent adjustment mechanism, the power supply method for the rotary machining tool holder can maintain optimal efficiency under different working conditions, extend battery life, and ensure that the tool holder rotating assembly 1 receives a stable and reliable power supply.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A power supply device for a rotary machining tool holder, characterized in that, include: The device includes at least two inductor coils, a tool holder rotation assembly, a magnet mounting plate, and a spindle box connecting bracket. The inductor coils are installed inside the collar of the tool holder rotation assembly and are used to generate electrical energy through electromagnetic induction. The magnet mounting plate is located at the lower part of the spindle box connecting bracket and surrounds the inductor coils to generate a first magnetic field. A switching unit, located inside the collar and connected to the inductor coil, is used to adjust the power supplied by the power supply device by controlling at least one of the inductors coil to connect to or disconnect the circuit. An acquisition unit, located inside the collar and connected to the switching unit, is used to acquire parameters characterizing the power generation power of the power supply device; The control unit, located within the collar, connects the acquisition unit and the switching unit. It is used to adjust the number of inductors in the circuit by controlling the switching unit based on a preset strategy, target power, and power information acquired by the acquisition unit, so that the power supplied to the electrical equipment meets the requirements.

2. The power supply device for the rotary machining tool holder according to claim 1, characterized in that, At least two of the said inductor coils include a first coil L6 and a second coil; The switching unit includes: a first capacitor C12, a second capacitor C18, a third capacitor C20, a first rectifier module, and a second rectifier module; The first rectifier module includes: a first rectifier bridge and a capacitor C21. One end of the capacitor C21 is connected to one end of the first coil L6, and the other end of the capacitor C21 is connected to the other end of the first coil L6. The first input terminal of the first rectifier bridge is connected to one end of the capacitor C21 and one end of the first coil L6. The second input terminal of the first rectifier bridge is connected to the other end of the capacitor C21 and the other end of the first coil L6. The positive output terminal of the first rectifier bridge is connected to the first output terminal of the second rectifier module, and the negative output terminal of the first rectifier bridge is connected to the power supply ground. The first capacitor C12, the second capacitor C18, and the third capacitor C20 are connected in parallel between the first voltage and the power supply ground. The second rectifier module includes: a second rectifier bridge, a fourth capacitor C11, a third rectifier bridge, and a switching circuit; The first input terminal of the second rectifier bridge is connected to one end of the second coil, and the second input terminal of the second rectifier bridge is connected to the other end of the second coil. One end of the switching circuit is connected to the positive output terminal of the second rectifier bridge, and the negative output terminal of the second rectifier bridge is connected to the second input terminal of the third rectifier bridge and one end of the fourth capacitor. The other end of the fourth capacitor is connected to the first input terminal of the third rectifier bridge and the other end of the switching circuit. The positive output terminal of the third rectifier bridge is connected to the first voltage, and the negative output terminal of the third rectifier bridge forms the first output terminal of the second rectifier module, which is connected to the positive output terminal of the first rectifier bridge.

3. The power supply device for the rotary machining tool holder according to claim 2, characterized in that, At least two of the inductor coils include at least two second coils; the switching unit includes at least two second rectifier modules; the number of rectifier modules corresponds to the number of second coils, each rectifier module corresponds to one second coil, and the second coil is connected to the corresponding rectifier module; at least two second rectifier modules are connected in series between the first voltage and the positive output terminal of the first rectifier bridge.

4. The power supply device for the rotary machining tool holder according to claim 2, characterized in that, The acquisition unit includes: A filtering module, connected to the switching unit, is used to filter the first voltage to obtain a second voltage; An amplification module, connected to the filtering module, is used to amplify the second voltage to obtain a third voltage; The acquisition module, connected to the switching unit, is used to acquire the output current of all the inductor coils; The processing module, connected to the amplification module and the acquisition module, is used to generate the power generation based on the third voltage and the output current.

5. The power supply device for the rotary machining tool holder according to claim 1, characterized in that, Also includes: The battery is located inside the collar and is connected to the control unit.

6. The power supply device for the rotary machining tool holder according to claim 5, characterized in that, Also includes: A heat dissipation load, located on the outer surface of the collar and connected to the control unit, is used to dissipate heat from the collar.

7. The power supply device for the rotary machining tool holder according to claim 6, characterized in that, The preset strategy is as follows: When the power generation exceeds the target power, the battery is charged, and at least one of the inductors is disconnected via the switching unit; or When the power generation is greater than the target power, the battery is charged and the heat dissipation load is powered, and the switching unit controls the disconnection of at least one of the inductor coils; When the power generation is less than the target power, the battery is controlled to supply power to the tool holder rotation assembly, and at least one of the inductor coils is energized through the switching unit.

8. The power supply device for the rotary machining tool holder according to claim 6, characterized in that, Provide a form, which is a two-dimensional table with the number of energized coils and the rotational speed of the tool holder as variables and the power generation as the result; The preset strategy is as follows: The tool holder rotation speed is obtained, and based on the tool holder rotation speed, the number of energized coils, and the form, the power generation is determined, and the battery charge is obtained; When the power generation is greater than the target power and the battery charge is lower than the preset voltage, the battery is charged; when the power generation is greater than the target power and the battery charge is equal to or greater than the preset voltage, the heat dissipation load is supplied with power. When the power generation is less than or equal to the target power, the battery is controlled to supply power to the tool holder rotation assembly, and at least one of the unpowered inductors is powered on by the switching unit.

9. A method for supplying power to a rotary machining tool holder, applied to the rotary machining tool holder power supply device according to claims 1-8, characterized in that, include: Obtain the power generation capacity of the power supply device; Based on the preset strategy, target power, and acquired power information, the number of inductors connected to the circuit is adjusted by controlling the switching unit so that the power supplied to the electrical equipment meets the demand.

10. The power supply method for a rotary machining tool holder according to claim 9, characterized in that, The preset strategy is as follows: When the power generation is greater than the target power, the battery is charged and at least one of the inductors is disconnected by the switching unit; or when the power generation is greater than the target power, the battery is charged and power is supplied to the heat dissipation load, and at least one of the inductors is disconnected by the switching unit. When the power generation is less than the target power, the battery is controlled to supply power to the tool holder rotation assembly, and at least one of the inductor coils is energized through the switching unit.

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