Ultrasonic machining tool shank assembly quality detection method, device, equipment and medium

Abstract

The application provides an ultrasonic machining tool holder assembly quality detection method, device, equipment and medium, and relates to the technical field of ultrasonic machining. The ultrasonic machining tool holder assembly quality detection method comprises the following steps: acquiring an assembly quality detection graph generated by an impedance analyzer by sweeping frequency on a non-contact ultrasonic tool holder in a no-load state; determining an assembly quality detection result between a tool holder body and a transducer and / or an assembly quality detection result between a non-contact electric energy transmission device secondary side and the transducer according to a comparison result between the assembly quality detection graph and a preset target graph; wherein the non-contact ultrasonic tool holder comprises a machining tool holder and the non-contact electric energy transmission device; and the machining tool holder comprises the tool holder body and the transducer. The application can accurately determine the assembly quality of the non-contact ultrasonic tool holder.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic machining technology, and in particular to a method, apparatus, equipment, and medium for inspecting the assembly quality of ultrasonic machining tool holders. Background Technology

[0002] Rotary ultrasonic machining, as an advanced machining technology, is suitable for machining difficult-to-machine materials, especially hard and brittle materials, such as titanium alloys, aluminum-based silicon carbide, and carbon fiber reinforced composites. Compared with traditional machining, rotary ultrasonic machining has the advantages of low cutting force, high surface quality, and minimal tool wear.

[0003] Energy transmission devices can be divided into contact energy transmission devices and non-contact power transmission devices. Contact energy transmission devices are usually conductive slip rings, but due to their disadvantages such as rapid wear, easy generation of electric sparks, and low degree of automation, they have been gradually replaced by non-contact power transmission devices—rotary transformers.

[0004] The non-contact power transmission device transmits electricity from the ultrasonic power source to the machining tool holder through an air gap. The machining tool holder consists of a tool holder housing, a transducer, and a cutting tool. The machining tool holder and the non-contact power transmission device are usually collectively referred to as a non-contact ultrasonic tool holder.

[0005] Typically, transducers (such as piezoelectric transducers) are assembled with custom tool holders (including the tool holder housing and the cutting tool). The secondary side of the non-contact power transmission device is also assembled with the custom tool holder, and is electrically connected to the piezoelectric transducer. The primary side of the non-contact power transmission device is usually connected to the machine tool spindle and acts as the stator, transmitting electrical energy to the secondary side through an air gap, and thus to the piezoelectric transducer.

[0006] Current research on non-contact ultrasonic scalpel handles mainly focuses on the design, transmission performance, and compensation topology of non-contact power transmission devices. This research employs traditional non-contact ultrasonic scalpel handle models, typically combinations of mutual inductance models and transducer equivalent circuit models, or leakage inductance models and transducer equivalent circuit models. However, these traditional circuit models cannot intuitively and theoretically demonstrate the relationship between the non-contact ultrasonic scalpel handle and load changes. The tightness of the assembly between the transducer, the custom-designed scalpel handle, and the secondary side of the non-contact power transmission device determines whether the non-contact ultrasonic scalpel handle can function properly. However, in existing technologies, because the non-contact power transmission device has a non-linear structure, the transducer impedance circle and admittance circle cannot be directly applied to the assembly inspection of the non-contact ultrasonic scalpel handle. Therefore, there is no method to determine the assembly quality of the non-contact ultrasonic scalpel handle. Summary of the Invention

[0007] This invention provides a method, apparatus, equipment, and medium for detecting the assembly quality of ultrasonic machining tool holders, in order to solve the problem in the prior art that the assembly quality of non-contact ultrasonic tool holders cannot be determined.

[0008] To address the aforementioned technical problems, the embodiments of the present invention provide the following technical solutions:

[0009] This invention provides a method for inspecting the assembly quality of ultrasonically machined tool holders, comprising:

[0010] Acquire assembly quality inspection graphics generated by frequency sweeping of a non-contact ultrasonic tool holder under no-load conditions using an impedance analyzer;

[0011] Based on the comparison between the assembly quality inspection graphic and the preset target graphic, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer are determined.

[0012] The non-contact ultrasonic shovel handle includes a machining shovel and a non-contact power transmission device; the machining shovel handle includes the shovel body and the transducer.

[0013] Optionally, the target pattern includes an impedance circle formed as a circle;

[0014] The center and radius of the impedance circle are obtained based on the impedance of the transducer, the primary impedance of the non-contact power transmission device, the secondary impedance of the non-contact power transmission device, and the electrical physical quantity information in the preset non-contact ultrasonic scalpel handle model.

[0015] Optionally, the target pattern includes a frequency response curve; the frequency response curve is used to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel and the input impedance of the non-contact ultrasonic scalpel, or, to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel and the target phase angle, wherein the target phase angle is the phase angle between the input voltage and the input current of the non-contact ultrasonic scalpel.

[0016] The frequency response curve is obtained based on the operating frequency of the non-contact ultrasonic scalpel corresponding to the first operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the first operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the second operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the second operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the third operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the third operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the fourth operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the fourth operating point, the anti-resonance frequency of the non-contact ultrasonic scalpel, and the resonant frequency of the non-contact ultrasonic scalpel.

[0017] Wherein, the first working point is the working point on the impedance circle where the real part of the input impedance of the non-contact ultrasonic scalpel is the smallest; the second working point is the working point on the impedance circle where the imaginary part of the input impedance of the non-contact ultrasonic scalpel is the largest; the third working point is the working point on the impedance circle where the real part of the input impedance of the non-contact ultrasonic scalpel is the largest; and the fourth working point is the working point on the impedance circle where the imaginary part of the input impedance of the non-contact ultrasonic scalpel is the smallest.

[0018] The center and radius of the impedance circle are obtained based on the impedance of the transducer, the primary impedance of the non-contact power transmission device, the secondary impedance of the non-contact power transmission device, and the electrical physical quantity information in the preset non-contact ultrasonic scalpel handle model.

[0019] Optionally, the target pattern includes an impedance circle and / or a frequency response curve formed in a circular shape; the frequency response curve is used to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the input impedance of the non-contact ultrasonic scalpel handle, or to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the target phase angle, wherein the target phase angle is the phase angle between the input voltage and the input current of the non-contact ultrasonic scalpel handle.

[0020] Based on the comparison between the assembly quality inspection graphic and the target graphic, the assembly quality inspection results between the tool holder body and the transducer and / or the assembly quality inspection results between the secondary side of the non-contact power transmission device and the transducer are determined, including at least one of the following:

[0021] If the shape difference between the assembly quality inspection pattern and the impedance circle meets the first preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be qualified; if the shape difference between the assembly quality inspection pattern and the impedance circle does not meet the first preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be unqualified.

[0022] If the shape difference between the assembly quality inspection pattern and the frequency characteristic curve meets the second preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be qualified. If the shape difference between the assembly quality inspection pattern and the frequency characteristic curve does not meet the second preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be unqualified.

[0023] Optionally, the first preset condition includes at least one of the following:

[0024] The protrusion value of the quality detection pattern relative to the impedance circle is less than a first preset threshold.

[0025] There are no parasitic circles between the quality detection pattern and the impedance circle;

[0026] The second preset condition includes:

[0027] The salient value between the assembly quality inspection graph and the frequency characteristic curve is less than a second preset threshold.

[0028] Optionally, the method further includes:

[0029] Obtain the initial capacitive reactance value of the non-contact ultrasonic scalpel handle;

[0030] When the transducer is in a resonant state, adjust the primary side compensation capacitive reactance of the non-contact power transmission device so that the phase of the input voltage and input current of the non-contact ultrasonic scalpel handle is 0.

[0031] The load variation of the non-contact ultrasonic scalpel handle is determined based on the initial capacitive reactance value and the compensated capacitive reactance value.

[0032] Optionally, obtaining the initial capacitive reactance value of the non-contact ultrasonic scalpel holder includes:

[0033] When the non-contact ultrasonic scalpel handle is in an unloaded state, the transducer is in a resonant state, and the phase of the input voltage and input current of the non-contact ultrasonic scalpel handle is 0, the primary-side series capacitive reactance compensation value of the non-contact power transmission device is measured to be the initial capacitive reactance value.

[0034] Optionally, the load variation of the non-contact ultrasonic scalpel holder is determined based on the initial capacitive reactance value and the compensated capacitive reactance value, including:

[0035] If the absolute value of the compensation capacitance value minus the absolute value of the initial capacitance value is greater than a preset threshold, the non-contact ultrasonic scalpel handle is determined to switch from an unloaded state to a loaded state.

[0036] If the absolute value of the compensation capacitance value minus the absolute value of the initial capacitance value is less than or equal to a preset threshold, the non-contact ultrasonic scalpel handle is determined to be in an unloaded state.

[0037] This invention also provides an ultrasonic machining tool holder assembly quality inspection device, comprising:

[0038] The first acquisition module is used to acquire the assembly quality inspection pattern generated by the impedance analyzer sweeping the frequency of the non-contact ultrasonic tool holder under no-load conditions.

[0039] The first determining module is used to determine the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer based on the comparison result between the assembly quality inspection graphic and the preset target graphic.

[0040] The non-contact ultrasonic shovel handle includes a machining shovel and a non-contact power transmission device; the machining shovel handle includes the shovel body and the transducer.

[0041] This invention also provides an ultrasonic machining tool holder assembly quality inspection device, comprising: a transceiver, a processor, a memory, and a program or instructions stored in the memory and executable on the processor; when the processor executes the program or instructions, it implements the ultrasonic machining tool holder assembly quality inspection method as described above.

[0042] This invention also provides a readable storage medium storing a program or instructions thereon, which, when executed by a processor, implement the steps in the ultrasonic machining tool holder assembly quality inspection method as described above.

[0043] The beneficial effects of this invention are:

[0044] The ultrasonic machining tool holder assembly quality inspection method provided by the present invention obtains the assembly quality inspection pattern generated by sweeping the frequency of the non-contact ultrasonic tool holder under no-load conditions using an impedance analyzer, and determines the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer based on the comparison result between the assembly quality inspection pattern and the preset target pattern, thereby achieving accurate determination of the assembly quality of the non-contact ultrasonic tool holder. Attached Figure Description

[0045] Figure 1 A flowchart illustrating the ultrasonic machining tool holder assembly quality inspection method provided in this embodiment of the invention;

[0046] Figure 2 A schematic diagram illustrating a non-contact ultrasonic scalpel handle model provided in an embodiment of the present invention;

[0047] Figure 3 A schematic diagram illustrating the impedance circle provided in an embodiment of the present invention;

[0048] Figure 4 A schematic diagram illustrating the frequency response curve provided in this embodiment of the invention, which indicates the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the input impedance of the non-contact ultrasonic scalpel handle.

[0049] Figure 5A schematic diagram illustrating the frequency response curve provided in this embodiment of the invention for indicating the relationship between the working frequency of a non-contact ultrasonic scalpel handle and the target phase angle;

[0050] Figure 6 This is a flowchart illustrating the specific process of the ultrasonic machining tool holder assembly quality inspection method provided in this embodiment of the invention.

[0051] Figure 7 This is a schematic diagram showing the trend of the impedance circle under load variation provided in the embodiments of the present invention.

[0052] Figure 8 This diagram illustrates the movement of the impedance circle provided in an embodiment of the present invention.

[0053] Figure 9 A flowchart illustrating the load monitoring method provided in an embodiment of the present invention;

[0054] Figure 10 This is a flowchart illustrating the overall process of the ultrasonic machining tool holder assembly quality inspection method provided in this embodiment of the invention.

[0055] Figure 11 This is a schematic diagram of the ultrasonic machining tool holder assembly quality inspection device provided in an embodiment of the present invention;

[0056] Figure 12 This is a schematic diagram of the ultrasonic machining tool holder assembly quality inspection equipment provided in an embodiment of the present invention. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] This invention addresses the problem in the prior art that the assembly quality of non-contact ultrasonic tool holders cannot be determined, by providing a method, apparatus, equipment, and medium for detecting the assembly quality of ultrasonic machining tool holders.

[0059] like Figure 1 As shown, this embodiment of the invention provides a method for inspecting the assembly quality of ultrasonically machined tool holders, including:

[0060] Step 101: Obtain the assembly quality inspection pattern generated by the impedance analyzer sweeping the frequency of the non-contact ultrasonic tool holder under no-load conditions; wherein, the non-contact ultrasonic tool holder includes a machining tool holder and the non-contact power transmission device; the machining tool holder includes the tool holder body and the transducer.

[0061] It should be noted that the tool holder body can be a custom tool holder (including the tool holder housing and the cutting tool), and the transducer is a piezoelectric transducer. The transducer is assembled and connected to the tool holder body, and the secondary side of the non-contact power transmission device is assembled to the tool holder body and electrically connected to the transducer. The primary side of the non-contact power transmission device is typically connected to the machine tool spindle and serves as the stator. Electrical energy is transferred to the secondary side of the non-contact power transmission device through an air gap, and thus to the transducer.

[0062] For transducer assembly inspection, an impedance analyzer is usually used to measure the transducer impedance circle or admittance circle to check its assembly quality. When the measured transducer impedance circle or admittance circle is regular in shape and has no parasitic circles, it indicates that the transducer is well assembled. The same method is used for the assembly inspection of contact ultrasonic scalpel holders. This is because contact power transmission devices are equivalent to wires in an ideal state. Unlike non-contact power transmission devices, which are non-linear structures, non-contact power transmission devices cause differences between the performance of non-contact ultrasonic scalpel holders and transducers.

[0063] In this step, the impedance analyzer is a measuring instrument capable of frequency sweeping and acquiring impedance information. The measuring port of the impedance analyzer is electrically connected to the primary side of the non-contact ultrasonic scalpel handle. No compensation circuit is required at this time. The impedance analyzer is run to perform frequency sweeping and acquire assembly quality inspection patterns within a suitable frequency range (also known as a preset frequency range). These assembly quality inspection patterns include circular and / or curved shapes.

[0064] Step 102: Based on the comparison between the assembly quality inspection graphic and the preset target graphic, determine the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer.

[0065] In this step, the assembly quality inspection graphic is compared with the preset target graphic to obtain the comparison result. Based on the comparison result, the assembly quality inspection result of the ultrasonic machining tool holder can be determined. The assembly quality inspection result of the ultrasonic machining tool holder includes the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer.

[0066] By following the above steps, the assembly quality inspection results of ultrasonic machining tool holders can be obtained, which can quickly detect the assembly quality of non-contact ultrasonic machining tool holders and shorten the production cycle.

[0067] It should be noted that the target pattern includes an impedance circle formed in a circular shape;

[0068] The center and radius of the impedance circle are obtained based on the impedance of the transducer, the primary impedance of the non-contact power transmission device, the secondary impedance of the non-contact power transmission device, and the electrical physical quantity information in the preset non-contact ultrasonic scalpel handle model, respectively.

[0069] The impedance information includes the impedance of the transducer, the primary impedance of the contactless power transmission device, and the secondary impedance of the contactless power transmission device.

[0070] Specifically, a schematic diagram of the preset non-contact ultrasonic scalpel handle model is shown below. Figure 2 As shown, Figure 2 As shown, the non-contact ultrasonic scalpel handle model includes a mutual inductance model of the non-contact power transmission device and an equivalent circuit model of the transducer. That is, the mutual inductance model and the equivalent circuit model of the transducer are combined to form the non-contact ultrasonic scalpel handle model. In the mutual inductance model, U... p I0 is the excitation voltage, i.e., the primary voltage of the contactless power transmission device; I1 and I2 are the primary and secondary currents of the contactless power transmission device, respectively; L p and L s These are the primary and secondary inductances of the contactless power transmission device; M is the mutual inductance; R p and R s These are the equivalent resistances of the primary and secondary sides connected in series in the non-contact power transmission device, representing the primary and secondary losses respectively. In the transducer equivalent circuit model, C0 is the clamping capacitance, i.e., the capacitance between the transducer electrode plates; C1 is the dynamic capacitance; L1 is the dynamic inductance; and R1 is the dynamic resistance, representing damping and load. Load changes mainly cause changes in C1, L1, and R1, with R1 being positively correlated with the load. The above describes the electrical physical quantities in the non-contact ultrasonic scalpel handle model.

[0071] Based on the above non-contact ultrasonic scalpel handle model, the transducer impedance is derived as follows:

[0072]

[0073] In Formula 1 above, R t With X t Z represents the transducer impedance. t The real and imaginary parts, C p = (C0C1) / (C0+C1), and ω = 2πf, where ω represents the operating angular frequency. The parallel resonant frequency f of the transducer. p for:

[0074]

[0075] Where f represents the operating frequency of the non-contact ultrasonic scalpel handle, C0 represents the clamping capacitance, i.e. the capacitance value between the transducer electrode plates, C1 represents the dynamic capacitance, L1 represents the dynamic inductance, and R1 represents the dynamic resistance, i.e., the damping and load.

[0076] According to Kirchhoff's voltage law, the relationship between the primary and secondary sides of a contactless power transmission device is as follows:

[0077]

[0078] Among them, Z 11 and Z 22 These are the primary and secondary impedances of the contactless power transmission device, respectively. t Z is the transducer impedance. 11 =R p +jωL p Z 22 =R s +jωL s ω represents the working angular frequency, ω=2πf, where f represents the working frequency of the non-contact ultrasonic scalpel handle. R p L represents the equivalent resistance connected in series with the primary side of a contactless power transmission device, which also represents the primary side loss. p L represents the primary inductance of a contactless power transmission device. s R represents the secondary inductance of a contactless power transmission device. s The equivalent resistance of the secondary side of the contactless power transmission device is represented by the series connection, which represents the secondary side loss. M is the mutual inductance, and I1 and I2 represent the primary and secondary currents of the contactless power transmission device, respectively.

[0079] The secondary impedance and transducer impedance of the contactless power transmission device are equivalently transformed to the mapped impedance Z on the circular side of the device. f According to Formula 3, the input impedance Z in and mapped impedance Z f The calculation formula is as follows:

[0080]

[0081] As can be seen from Formula 4 above, the mapped impedance is ω of the total secondary admittance. 2 M 2 The input impedance is directly related to the total admittance of the secondary side, meaning that the input impedance is directly related to the admittance of the transducer.

[0082] Substituting Equation 1 into the model of the non-contact ultrasonic scalpel handle, we can obtain the secondary impedance of the non-contact power transmission device as follows:

[0083]

[0084] In Formula 5 above, Z2 represents the secondary impedance of the contactless power transmission device, and R2 and X2 represent the real and imaginary parts of the secondary impedance of the contactless power transmission device, respectively. t With X t Z represents the transducer impedance. t The real and imaginary parts, L s R represents the secondary inductance of a contactless power transmission device. s C represents the equivalent resistance connected in series on the secondary side of the contactless power transmission device, which also represents the secondary side loss. p = (C0C1) / (C0+C1), and ω=2πf, where ω represents the operating angular frequency, C0 represents the clamping capacitance, i.e. the capacitance value between the transducer electrode plates, C1 represents the dynamic capacitance, L1 represents the dynamic inductance, and R1 represents the dynamic resistance, i.e., representing damping and load.

[0085] The secondary side admittance Y2 is:

[0086]

[0087] Wherein, G2 represents the secondary conductance of the contactless power transmission device, and B2 represents the secondary susceptance of the contactless power transmission device.

[0088] From the above equation, the equation for the secondary admittance circle can be obtained as follows:

[0089]

[0090] Let the real and imaginary parts of the input impedance be Ri and Ri, respectively. in and X in Combining formulas four and seven, at the parallel resonant frequency f p (i.e., within the preset frequency range) we can obtain:

[0091]

[0092] Substituting Equation 8 into Equation 7, we obtain the equation for the impedance circle as follows:

[0093]

[0094] in,

[0095] Therefore, the center of the impedance circle is radius is

[0096] A schematic diagram of the impedance circle obtained according to the above process is shown below. Figure 3 As shown.

[0097] Furthermore, the target pattern includes a frequency response curve; the frequency response curve is used to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the input impedance of the non-contact ultrasonic scalpel handle, or, to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the target phase angle, the target phase angle being the phase angle between the input voltage and the input current of the non-contact ultrasonic scalpel handle;

[0098] After obtaining the center and radius of the impedance circle based on the impedance of the transducer, the primary impedance of the non-contact power transmission device, the secondary impedance of the non-contact power transmission device, and the electrical physical quantity information in the preset non-contact ultrasonic scalpel handle model, the frequency characteristic curve can be established by characteristic points in the ultrasonic scalpel handle impedance circle and constructed by smoothly connecting these characteristic points. Optionally, the frequency characteristic curve is obtained based on the operating frequency of the non-contact ultrasonic scalpel handle corresponding to the first operating point, the input impedance of the non-contact ultrasonic scalpel handle corresponding to the first operating point, the operating frequency of the non-contact ultrasonic scalpel handle corresponding to the second operating point, the input impedance of the non-contact ultrasonic scalpel handle corresponding to the second operating point, the operating frequency of the non-contact ultrasonic scalpel handle corresponding to the third operating point, the input impedance of the non-contact ultrasonic scalpel handle corresponding to the third operating point, the operating frequency of the non-contact ultrasonic scalpel handle corresponding to the fourth operating point, the input impedance of the non-contact ultrasonic scalpel handle corresponding to the fourth operating point, the anti-resonance frequency of the non-contact ultrasonic scalpel handle, and the resonant frequency of the non-contact ultrasonic scalpel handle.

[0099] Wherein, the first operating point is the operating point on the impedance circle where the real part of the input impedance of the non-contact ultrasonic scalpel handle is the smallest; the second operating point is the operating point on the impedance circle where the imaginary part of the input impedance of the non-contact ultrasonic scalpel handle is the largest; the third operating point is the operating point on the impedance circle where the real part of the input impedance of the non-contact ultrasonic scalpel handle is the largest; and the fourth operating point is the operating point on the impedance circle where the imaginary part of the input impedance of the non-contact ultrasonic scalpel handle is the smallest.

[0100] Specifically, according to such Figure 3 The impedance circle is shown, and the operating point on the impedance circle is represented by the corresponding frequency. r1 and f r2 These are the anti-resonant frequency and resonant frequency of the ultrasonic scalpel handle, respectively. At this point, the ultrasonic scalpel handle exhibits resistivity, i.e., X. in =0. a - and a + At the same operating point on the impedance circle (i.e., the first operating point), where a- is at a lower frequency, a + It is at a relatively high frequency. Furthermore, the straight line from the origin O to the operating point on the impedance circle represents the input impedance modulus |Z|. in |, θ is the angle between the line and the horizontal axis.

[0101] As the operating frequency f increases, the operating point on the impedance circle moves along a... - →b (second working point) →c (third working point) →d (fourth working point) →a + Move clockwise. As f increases, R in First it increases, reaching its maximum value at the operating point c, and then it decreases. As f increases, X... in First, it increases, reaching its maximum value at operating point b, then decreases, reaching its minimum value at operating point d, and then increases again. As f increases, |Z in |Increase to its maximum value|Z in | max Then reduce it to its minimum value |Z in | min Then increase it again. Operating point f m1 and f m2 Corresponding to |Z in | max and |Z in | min .

[0102] When R2 = 0 or R2 → ∞, the operating point approaches the limit point a. Furthermore, from the perspective of energy transfer, R2 = 0 and R2 → ∞ correspond to a short circuit and an open circuit on the secondary side of the contactless power transmission device, respectively, and the energy is transferred only from the primary side via R... P Consumption, at this point corresponding to working point a.

[0103] Following the above procedure, the frequency response curve used to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel holder and the input impedance of the non-contact ultrasonic scalpel holder is as follows: Figure 4 As shown, where log 10 |Z| represents the logarithm of the absolute value of the ultrasonic scalpel handle's input impedance; the frequency response curve used to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the target phase angle is shown in the figure. Figure 5 As shown, the target phase angle is the phase angle between the input voltage and the input current of the non-contact ultrasonic scalpel handle.

[0104] In an optional embodiment of the present invention, the target pattern includes an impedance circle and / or a frequency response curve formed in a circular shape;

[0105] Based on the comparison between the assembly quality inspection graphic and the target graphic, the assembly quality inspection results between the tool holder body and the transducer and / or the assembly quality inspection results between the secondary side of the non-contact power transmission device and the transducer are determined, including at least one of the following:

[0106] If the shape difference between the assembly quality inspection pattern and the impedance circle meets the first preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be qualified; if the shape difference between the assembly quality inspection pattern and the impedance circle does not meet the first preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be unqualified.

[0107] If the shape difference between the assembly quality inspection pattern and the frequency characteristic curve meets the second preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be qualified. If the shape difference between the assembly quality inspection pattern and the frequency characteristic curve does not meet the second preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be unqualified.

[0108] The first preset condition includes at least one of the following:

[0109] The protrusion value of the quality detection pattern relative to the impedance circle is less than a first preset threshold.

[0110] There are no parasitic circles between the quality detection pattern and the impedance circle;

[0111] The second preset condition includes:

[0112] The salient value between the assembly quality inspection graph and the frequency characteristic curve is less than a second preset threshold.

[0113] Specifically, in this optional embodiment, when performing assembly quality monitoring, if the assembly quality detection pattern is circular, observe whether it is regular. If the circle is regular, and the protrusion value between the assembly quality detection pattern and the impedance circle is less than a first preset threshold and there are no parasitic circles between the quality detection pattern and the impedance circle, then the assembly quality detection results between the tool holder body and the transducer and / or the assembly quality detection results between the secondary side of the non-contact power transmission device and the transducer are considered qualified, indicating that the piezoelectric ceramic transducer, the customized tool holder, and the secondary side of the non-contact power transmission device are well assembled and can be put into use. If the circle is not regular, or the protrusion value between the assembly quality detection pattern and the impedance circle is greater than or equal to the first preset threshold, or there are parasitic circles between the quality detection pattern and the impedance circle, then the assembly quality detection results between the tool holder body and the transducer and / or the assembly quality detection results between the secondary side of the non-contact power transmission device and the transducer are determined to be unqualified, indicating an assembly problem. If the assembly quality inspection pattern is a curve, and the salient value between the assembly quality inspection pattern and the frequency characteristic curve is less than a second preset threshold (i.e., the assembly quality inspection pattern is standard, smooth, and without distortion), then the assembly quality inspection results between the tool holder body and the transducer and / or between the non-contact power transmission device secondary side and the transducer are considered qualified. This indicates that the piezoelectric ceramic transducer, the customized tool holder, and the non-contact power transmission secondary side are well assembled and ready for use. If the salient value between the assembly quality inspection pattern and the frequency characteristic curve is greater than or equal to the second preset threshold, then the assembly quality inspection results between the tool holder body and the transducer and / or between the non-contact power transmission device secondary side and the transducer are determined to be unqualified, indicating an assembly problem.

[0114] The following is combined with Figure 6 The specific process of the ultrasonic machining tool holder assembly quality inspection method provided in the embodiments of the present invention is as follows:

[0115] After starting work, determine whether the non-contact ultrasonic scalpel handle is in an unloaded state. If not, return to continue monitoring. If it is, perform frequency sweep on the non-contact ultrasonic scalpel handle to obtain an assembly quality inspection pattern. Compare the assembly quality inspection pattern with the impedance circle or frequency characteristic curve. If the assembly quality inspection pattern is standard and regular relative to the impedance circle or frequency characteristic curve, the assembly quality is determined to be qualified; otherwise, the assembly quality is determined to be unqualified.

[0116] The above-described ultrasonic machining tool holder assembly quality inspection method is applicable to any type of non-contact ultrasonic tool holder, including piezoelectric ceramic transducers of different sizes and operating frequencies, and non-contact power transmission devices of different structures and sizes but satisfying the mutual inductance model. The two quality monitoring methods are not contradictory, and the monitoring results are consistent.

[0117] While ensuring proper assembly of the non-contact ultrasonic tool holder, it is necessary to consider its automated and intelligent applications, namely, monitoring its load status. Load status monitoring can be combined with machine tool status feedback to detect whether problems have occurred in the current process, such as tool breakage, workpiece damage, or other timely processing issues. Therefore, in an optional embodiment of the present invention, the method further includes load monitoring of the non-contact ultrasonic tool holder. The specific load monitoring process includes:

[0118] To obtain the initial capacitive reactance value of the non-contact ultrasonic scalpel handle, optionally, the method includes: when the non-contact ultrasonic scalpel handle is in an unloaded state, the transducer is in a resonant state, and the phase of the input voltage and input current of the non-contact ultrasonic scalpel handle is 0, measuring the primary-side series capacitive reactance compensation value of the non-contact power transmission device as the initial capacitive reactance value.

[0119] Specifically, load monitoring requires primary-side series compensation and relies on the ultrasonic power supply control method, but does not require secondary-side compensation or the specific compensation topology used. The ultrasonic power supply is required to guarantee transducer resonance, adjust the primary-side compensation value to achieve zero phase of the input voltage and current, and measure and record the primary-side compensation capacitive reactance. With the ultrasonic power supply connected under no-load conditions in the non-contact ultrasonic scalpel holder, after initialization—ensuring resonance and zero phase of the non-contact primary-side input voltage and current—the current primary-side series compensation value |X| is measured and recorded. p0 This is the initial capacitive reactance value.

[0120] After completing the above operations, the ultrasonic power supply maintains the transducer in a resonant state in real time. While the transducer is in a resonant state, the primary-side compensation capacitive reactance value of the non-contact power transmission device is adjusted to ensure that the phase of the input voltage and input current of the non-contact ultrasonic scalpel handle is 0, and the current primary-side compensation capacitive reactance value |X| is recorded continuously. p1 |;

[0121] After each recording is completed, the load change of the non-contact ultrasonic scalpel handle is determined based on the initial capacitive reactance value and the compensated capacitive reactance value. Optionally, this includes: if the absolute value of the compensated capacitive reactance value minus the absolute value of the initial capacitive reactance value is greater than a preset threshold, determining that the non-contact ultrasonic scalpel handle has changed from an unloaded state to a loaded state; if the absolute value of the compensated capacitive reactance value minus the absolute value of the initial capacitive reactance value is less than or equal to a preset threshold, determining that the non-contact ultrasonic scalpel handle is in an unloaded state.

[0122] Specifically, comparing |X p1 |、|X p0 | and calculate |X p1 |-|X p0 The value is compared with the correction coefficient ε (i.e., the preset threshold). If |X p1 |-|Xp0 |>ε indicates a drastic load change, with the non-contact ultrasonic scalpel handle transitioning from an unloaded state to a loaded state; if |X p1 |-|X p0 |≤ε indicates that the load remains almost unchanged, and the non-contact ultrasonic scalpel handle remains unloaded. The correction factor ε can be obtained experimentally.

[0123] The above load monitoring method requires that the phase of the primary voltage and current of the non-contact ultrasonic scalpel handle is always 0, i.e., there is no reactive power, and that the operating frequency is always the transducer resonant frequency or series resonant frequency, i.e., real-time tracking of the resonant frequency or series resonant frequency. This method is applicable to both cases of no secondary compensation and series compensation.

[0124] One of the theoretical bases of the above load monitoring method is the changing trend of the impedance circle of the non-contact ultrasonic scalpel holder under load changes, which is analyzed in detail below. Transducer parameters, especially C1, L1, and R1, change under varying loads, leading to changes in the working performance of the non-contact ultrasonic scalpel holder. It is assumed that R1 changes with the load, while C0, C1, and L1 remain constant; that is, f p Unchanged. Furthermore, the increase in R1 is considered an increase in load. For the impedance circle of a non-contact ultrasonic scalpel holder, according to Formula Nine, the value of r and O... in The horizontal value of the impedance circle decreases as R1 increases. Therefore, the trend of the impedance circle under varying load is as follows: Figure 7 As shown. As the load increases, the center of the circle moves along O. in →O in1 →O in2 Movement; the operating points corresponding to the maximum and minimum impedance values ​​are respectively along f m1 →f m11 →f m12 and f m2 →f m21 →f m22 The movement indicates that the maximum impedance value decreases and the minimum impedance value increases.

[0125] The second theoretical basis for the above load monitoring method is the impedance circle of the non-contact ultrasonic scalpel handle under primary-side series compensation, such as... Figure 8 As shown. The primary-side series compensation causes the impedance circle to shift downwards as a whole, f r1 and f r2 Change to f r3 and f r4 The new horizontal axis is the compensating reactance X. ps =-1 / ωC ps C ps To compensate for the capacitance value. β is the phase angle change of the primary-side series-compensated non-contact ultrasonic scalpel handle compared to the uncompensated state.

[0126] The third theoretical basis for the above load monitoring method is that the trend of the impedance circle of the non-contact ultrasonic scalpel holder can be predicted through primary-side series compensation, i.e., monitoring load changes. Assume f r4 The positional relationship on the circle does not change under varying loads, i.e., f r4 Corresponding angle ∠aO in f r4 Remain unchanged. Figure 7 As the load increases, O in Move to the left, horizontal axis X ps =-1 / ωC ps Moving upwards indicates that the absolute value of the compensated capacitive reactance |X ps |It increases with increasing load. Therefore, the tendency of the impedance circle, or load change, can be observed in f. r4 Through |X ps Direct monitoring, f r4 Set to the transducer series resonant frequency or resonant frequency.

[0127] The above theory reveals the variation trend of the impedance circle of the non-contact ultrasonic scalpel holder and the impedance circle of the non-contact ultrasonic scalpel holder under primary-side series compensation. The theory reveals the law of change of capacitive reactance on the primary side under load change, that is, the increase of absolute value of capacitive reactance indicates the increase of load, and the relationship between ultrasonic scalpel holder performance and load change, that is, the dynamic characteristics of non-contact ultrasonic scalpel holder, including frequency characteristics under load change and the transmission performance relationship corresponding to different working frequencies under load change.

[0128] The flowchart of the load monitoring method established based on the above theory is as follows: Figure 9 As shown. First, determine whether the non-contact ultrasonic scalpel holder is unloaded. When the non-contact ultrasonic scalpel holder is unloaded, and the transducer is in a resonant state, i.e., the operating frequency is the resonant frequency or the series resonant frequency, the absolute value of the initial series compensation capacitive reactance |X p0 |Measure and record. Then, monitor the transducer's resonant state and whether the input voltage and current of the non-contact ultrasonic scalpel handle are in phase (i.e., whether the phase is 0). To ensure the input voltage and current are in phase, the series compensation capacitive reactance value needs to be adjusted. When the transducer is in resonant state and the input voltage and current are in phase, record the current series compensation capacitive reactance value |X. p1 |。 Comparison |X p1 |and|X p0 |, if|X p1 |-|X p0 If |>ε, the non-contact ultrasonic scalpel holder is in a loaded state; otherwise, it is in an unloaded state. The above process allows you to determine whether the current state has transitioned from unloaded to loaded. The correction coefficient ε is used to eliminate measurement errors and interference caused by runout.

[0129] The following is combined Figure 10The following describes the overall process of the ultrasonic machining tool holder assembly quality inspection method provided in the embodiments of the present invention:

[0130] The non-contact ultrasonic scalpel handle includes a non-contact power transmission device, a scalpel handle body, and a piezoelectric ceramic transducer. The non-contact ultrasonic scalpel handle quality inspection method is realized by utilizing the impedance circle and / or frequency characteristic curve of the non-contact ultrasonic scalpel handle, and the load monitoring method is realized by the impedance circle change trend and the primary side series compensation impedance circle.

[0131] like Figure 11 As shown, this embodiment of the invention also provides an ultrasonic machining tool holder assembly quality inspection device, comprising:

[0132] The first acquisition module 1101 is used to acquire the assembly quality inspection pattern generated by the impedance analyzer sweeping the frequency of the non-contact ultrasonic tool holder under no-load conditions.

[0133] The first determining module 1102 is used to determine the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer based on the comparison result between the assembly quality inspection graphic and the preset target graphic.

[0134] The non-contact ultrasonic shovel handle includes a machining shovel and a non-contact power transmission device; the machining shovel handle includes the shovel body and the transducer.

[0135] Optionally, the target pattern includes an impedance circle formed as a circle;

[0136] The center and radius of the impedance circle are obtained based on the impedance of the transducer, the primary impedance of the non-contact power transmission device, the secondary impedance of the non-contact power transmission device, and the electrical physical quantity information in the preset non-contact ultrasonic scalpel handle model.

[0137] Optionally, the target pattern includes a frequency response curve; the frequency response curve is used to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel and the input impedance of the non-contact ultrasonic scalpel, or, to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel and the target phase angle, wherein the target phase angle is the phase angle between the input voltage and the input current of the non-contact ultrasonic scalpel.

[0138] The frequency response curve is obtained based on the operating frequency of the non-contact ultrasonic scalpel corresponding to the first operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the first operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the second operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the second operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the third operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the third operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the fourth operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the fourth operating point, the anti-resonance frequency of the non-contact ultrasonic scalpel, and the resonant frequency of the non-contact ultrasonic scalpel.

[0139] Wherein, the first working point is the working point on the impedance circle where the real part of the input impedance of the non-contact ultrasonic scalpel is the smallest; the second working point is the working point on the impedance circle where the imaginary part of the input impedance of the non-contact ultrasonic scalpel is the largest; the third working point is the working point on the impedance circle where the real part of the input impedance of the non-contact ultrasonic scalpel is the largest; and the fourth working point is the working point on the impedance circle where the imaginary part of the input impedance of the non-contact ultrasonic scalpel is the smallest.

[0140] The center and radius of the impedance circle are obtained based on the impedance of the transducer, the primary impedance of the non-contact power transmission device, the secondary impedance of the non-contact power transmission device, and the electrical physical quantity information in the preset non-contact ultrasonic scalpel handle model.

[0141] Optionally, the target pattern includes an impedance circle and / or a frequency response curve formed in a circular shape; the frequency response curve is used to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the input impedance of the non-contact ultrasonic scalpel handle, or to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the target phase angle, wherein the target phase angle is the phase angle between the input voltage and the input current of the non-contact ultrasonic scalpel handle.

[0142] The first determining module 1102 includes a first determining unit, which is used for at least one of the following:

[0143] If the shape difference between the assembly quality inspection pattern and the impedance circle meets the first preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be qualified; if the shape difference between the assembly quality inspection pattern and the impedance circle does not meet the first preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be unqualified.

[0144] If the shape difference between the assembly quality inspection pattern and the frequency characteristic curve meets the second preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be qualified. If the shape difference between the assembly quality inspection pattern and the frequency characteristic curve does not meet the second preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be unqualified.

[0145] Optionally, the first preset condition includes at least one of the following:

[0146] The protrusion value of the quality detection pattern relative to the impedance circle is less than a first preset threshold.

[0147] There are no parasitic circles between the quality detection pattern and the impedance circle;

[0148] The second preset condition includes:

[0149] The salient value between the assembly quality inspection graph and the frequency characteristic curve is less than a second preset threshold.

[0150] Optionally, the device further includes:

[0151] The second acquisition module is used to acquire the initial capacitive reactance value of the non-contact ultrasonic scalpel handle;

[0152] An adjustment module is used to adjust the primary-side compensation capacitive reactance value of the non-contact power transmission device when the transducer is in a resonant state, so that the phase of the input voltage and input current of the non-contact ultrasonic scalpel handle is 0.

[0153] The second determining module is used to determine the load change of the non-contact ultrasonic scalpel holder based on the initial capacitive reactance value and the compensated capacitive reactance value.

[0154] Optionally, the second acquisition module includes:

[0155] The first processing unit is used to measure the primary-side series capacitive reactance compensation value of the non-contact power transmission device as the initial capacitive reactance value when the non-contact ultrasonic scalpel handle is in an unloaded state, the transducer is in a resonant state, and the phase of the input voltage and input current of the non-contact ultrasonic scalpel handle is 0.

[0156] Optionally, the second determining module includes:

[0157] The second determining unit is used to determine that the non-contact ultrasonic scalpel handle changes from an unloaded state to a loaded state when the absolute value of the compensation capacitance value minus the absolute value of the initial capacitance value is greater than a preset threshold.

[0158] The third determining unit is used to determine that the non-contact ultrasonic scalpel handle is in an unloaded state when the absolute value of the compensation capacitance value minus the absolute value of the initial capacitance value is less than or equal to a preset threshold.

[0159] It should be noted that the ultrasonic machining tool holder assembly quality inspection device provided in this embodiment of the invention is a device capable of performing the above-described ultrasonic machining tool holder assembly quality inspection method. Therefore, all embodiments of the above-described ultrasonic machining tool holder assembly quality inspection method are applicable to this device and can achieve the same or similar technical effects.

[0160] This invention also provides an ultrasonic machining tool holder assembly quality inspection device, such as... Figure 12 As shown, it includes: a processor 1201; and a memory 1202 connected to the processor 1201 via a bus interface. The memory 1202 is used to store programs and data used by the processor 1201 when performing operations. The processor 1201 calls and executes the programs and data stored in the memory 1202.

[0161] The transceiver 1203 is connected to a bus interface and is used to receive and send data under the control of the processor 1201.

[0162] Among them, Figure 12 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1201 and memory represented by memory 1202 together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides a user interface 1204. The transceiver 1203 can be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium. For different user equipment, the user interface 1204 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0163] The processor 1201 is responsible for managing the bus architecture and general processing, while the memory 1202 can store the data used by the processor 1201 when performing operations.

[0164] The processor 1201 performs the following procedures:

[0165] Acquire assembly quality inspection graphics generated by frequency sweeping of a non-contact ultrasonic tool holder under no-load conditions using an impedance analyzer;

[0166] Based on the comparison between the assembly quality inspection graphic and the preset target graphic, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer are determined.

[0167] The non-contact ultrasonic shovel handle includes a machining shovel and a non-contact power transmission device; the machining shovel handle includes the shovel body and the transducer.

[0168] Optionally, the target pattern includes an impedance circle formed as a circle;

[0169] The center and radius of the impedance circle are obtained based on the impedance of the transducer, the primary impedance of the non-contact power transmission device, the secondary impedance of the non-contact power transmission device, and the electrical physical quantity information in the preset non-contact ultrasonic scalpel handle model.

[0170] Optionally, the target pattern includes a frequency response curve; the frequency response curve is used to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel and the input impedance of the non-contact ultrasonic scalpel, or, to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel and the target phase angle, wherein the target phase angle is the phase angle between the input voltage and the input current of the non-contact ultrasonic scalpel.

[0171] The frequency response curve is obtained based on the operating frequency of the non-contact ultrasonic scalpel corresponding to the first operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the first operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the second operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the second operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the third operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the third operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the fourth operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the fourth operating point, the anti-resonance frequency of the non-contact ultrasonic scalpel, and the resonant frequency of the non-contact ultrasonic scalpel.

[0172] Wherein, the first working point is the working point on the impedance circle where the real part of the input impedance of the non-contact ultrasonic scalpel is the smallest; the second working point is the working point on the impedance circle where the imaginary part of the input impedance of the non-contact ultrasonic scalpel is the largest; the third working point is the working point on the impedance circle where the real part of the input impedance of the non-contact ultrasonic scalpel is the largest; and the fourth working point is the working point on the impedance circle where the imaginary part of the input impedance of the non-contact ultrasonic scalpel is the smallest.

[0173] The center and radius of the impedance circle are obtained based on the impedance of the transducer, the primary impedance of the non-contact power transmission device, the secondary impedance of the non-contact power transmission device, and the electrical physical quantity information in the preset non-contact ultrasonic scalpel handle model.

[0174] Optionally, the target pattern includes an impedance circle and / or a frequency response curve formed in a circular shape; the frequency response curve is used to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the input impedance of the non-contact ultrasonic scalpel handle, or to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the target phase angle, wherein the target phase angle is the phase angle between the input voltage and the input current of the non-contact ultrasonic scalpel handle.

[0175] The processor 1201 is used for at least one of the following:

[0176] If the shape difference between the assembly quality inspection pattern and the impedance circle meets the first preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be qualified; if the shape difference between the assembly quality inspection pattern and the impedance circle does not meet the first preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be unqualified.

[0177] If the shape difference between the assembly quality inspection pattern and the frequency characteristic curve meets the second preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be qualified. If the shape difference between the assembly quality inspection pattern and the frequency characteristic curve does not meet the second preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be unqualified.

[0178] Optionally, the first preset condition includes at least one of the following:

[0179] The protrusion value of the quality detection pattern relative to the impedance circle is less than a first preset threshold.

[0180] There are no parasitic circles between the quality detection pattern and the impedance circle;

[0181] The second preset condition includes:

[0182] The salient value between the assembly quality inspection graph and the frequency characteristic curve is less than a second preset threshold.

[0183] Optionally, the processor 1201 is further configured to:

[0184] Obtain the initial capacitive reactance value of the non-contact ultrasonic scalpel handle;

[0185] When the transducer is in a resonant state, adjust the primary side compensation capacitive reactance of the non-contact power transmission device so that the phase of the input voltage and input current of the non-contact ultrasonic scalpel handle is 0.

[0186] The load variation of the non-contact ultrasonic scalpel handle is determined based on the initial capacitive reactance value and the compensated capacitive reactance value.

[0187] Optionally, the processor 1201 is specifically used for:

[0188] When the non-contact ultrasonic scalpel handle is in an unloaded state, the transducer is in a resonant state, and the phase of the input voltage and input current of the non-contact ultrasonic scalpel handle is 0, the primary-side series capacitive reactance compensation value of the non-contact power transmission device is measured to be the initial capacitive reactance value.

[0189] Optionally, the processor 1201 is specifically used for:

[0190] If the absolute value of the compensation capacitance value minus the absolute value of the initial capacitance value is greater than a preset threshold, the non-contact ultrasonic scalpel handle is determined to switch from an unloaded state to a loaded state.

[0191] If the absolute value of the compensation capacitance value minus the absolute value of the initial capacitance value is less than or equal to a preset threshold, the non-contact ultrasonic scalpel handle is determined to be in an unloaded state.

[0192] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing the relevant hardware to implement them. The program includes instructions to perform some or all of the steps of the above methods; and the program can be stored in a readable storage medium, which can be any form of storage medium.

[0193] This invention also provides a readable storage medium, wherein a program is stored on the readable storage medium, and when the program is executed by a processor, it implements the ultrasonic machining tool holder assembly quality inspection method as described in any of the preceding claims.

[0194] In the several embodiments provided in this application, it should be understood that the disclosed methods and apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0195] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can be physically comprised separately, or two or more units can be integrated into one unit. The integrated unit described above can be implemented in hardware or in the form of hardware plus software functional units.

[0196] The integrated units implemented as software functional units described above can be stored in a computer-readable storage medium. These software functional units, stored in a storage medium, include several instructions that cause a computer device (which may be a personal computer, server, or network device, etc.) to execute some steps of the transmission and reception methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0197] The above describes the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also within the scope of protection of the present invention.

Claims

1. A method for inspecting the assembly quality of ultrasonically machined tool holders, characterized in that, include: Acquire assembly quality inspection graphics generated by frequency sweeping of a non-contact ultrasonic tool holder under no-load conditions using an impedance analyzer; Based on the comparison between the assembly quality inspection graphic and the preset target graphic, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer are determined; wherein, the non-contact ultrasonic tool holder includes a machining tool holder and the non-contact power transmission device; the machining tool holder includes the tool holder body and the transducer; The target graphic includes a frequency response curve; the frequency response curve is used to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the input impedance of the non-contact ultrasonic scalpel handle, or, to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the target phase angle, wherein the target phase angle is the phase angle between the input voltage and the input current of the non-contact ultrasonic scalpel handle. The frequency response curve is obtained based on the operating frequency of the non-contact ultrasonic scalpel corresponding to the first operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the first operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the second operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the second operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the third operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the third operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the fourth operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the fourth operating point, the anti-resonance frequency of the non-contact ultrasonic scalpel, and the resonant frequency of the non-contact ultrasonic scalpel. Wherein, the first working point is the working point on the impedance circle where the real part of the input impedance of the non-contact ultrasonic scalpel is the smallest; the second working point is the working point on the impedance circle where the imaginary part of the input impedance of the non-contact ultrasonic scalpel is the largest; the third working point is the working point on the impedance circle where the real part of the input impedance of the non-contact ultrasonic scalpel is the largest; and the fourth working point is the working point on the impedance circle where the imaginary part of the input impedance of the non-contact ultrasonic scalpel is the smallest. The center and radius of the impedance circle are obtained based on the impedance of the transducer, the primary impedance of the non-contact power transmission device, the secondary impedance of the non-contact power transmission device, and the electrical physical quantity information in the preset non-contact ultrasonic scalpel handle model.

2. The method according to claim 1, characterized in that, The target pattern includes an impedance circle formed in a circular shape; The center and radius of the impedance circle are obtained based on the impedance of the transducer, the primary impedance of the non-contact power transmission device, the secondary impedance of the non-contact power transmission device, and the electrical physical quantity information in the preset non-contact ultrasonic scalpel handle model.

3. The method according to claim 1, characterized in that, The target pattern includes an impedance circle and / or a frequency response curve formed in a circular shape; the frequency response curve is used to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the input impedance of the non-contact ultrasonic scalpel handle, or to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the target phase angle, wherein the target phase angle is the phase angle between the input voltage and the input current of the non-contact ultrasonic scalpel handle. Based on the comparison between the assembly quality inspection graphic and the target graphic, the assembly quality inspection results between the tool holder body and the transducer and / or the assembly quality inspection results between the secondary side of the non-contact power transmission device and the transducer are determined, including at least one of the following: If the shape difference between the assembly quality inspection pattern and the impedance circle meets the first preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be qualified; if the shape difference between the assembly quality inspection pattern and the impedance circle does not meet the first preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be unqualified. If the shape difference between the assembly quality inspection pattern and the frequency characteristic curve meets the second preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be qualified. If the shape difference between the assembly quality inspection pattern and the frequency characteristic curve does not meet the second preset condition, the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer is determined to be unqualified.

4. The method according to claim 3, characterized in that, The first preset condition includes at least one of the following: The protrusion value of the quality detection pattern relative to the impedance circle is less than a first preset threshold. There are no parasitic circles between the quality detection pattern and the impedance circle; The second preset condition includes: The salient value between the assembly quality inspection graph and the frequency characteristic curve is less than a second preset threshold.

5. The method according to claim 1, characterized in that, The method further includes: Obtain the initial capacitive reactance value of the non-contact ultrasonic scalpel handle; When the transducer is in a resonant state, adjust the primary side compensation capacitive reactance of the non-contact power transmission device so that the phase of the input voltage and input current of the non-contact ultrasonic scalpel handle is 0. The load variation of the non-contact ultrasonic scalpel handle is determined based on the initial capacitive reactance value and the compensated capacitive reactance value.

6. The method according to claim 5, characterized in that, Obtaining the initial capacitive reactance value of the non-contact ultrasonic scalpel holder includes: When the non-contact ultrasonic scalpel handle is in an unloaded state, the transducer is in a resonant state, and the phase of the input voltage and input current of the non-contact ultrasonic scalpel handle is 0, the primary-side series capacitive reactance compensation value of the non-contact power transmission device is measured to be the initial capacitive reactance value.

7. The method according to claim 5, characterized in that, Based on the initial capacitive reactance value and the compensated capacitive reactance value, the load variation of the non-contact ultrasonic scalpel holder is determined, including: If the absolute value of the compensation capacitance value minus the absolute value of the initial capacitance value is greater than a preset threshold, the non-contact ultrasonic scalpel handle is determined to switch from an unloaded state to a loaded state. If the absolute value of the compensation capacitance value minus the absolute value of the initial capacitance value is less than or equal to a preset threshold, the non-contact ultrasonic scalpel handle is determined to be in an unloaded state.

8. A device for inspecting the assembly quality of ultrasonically machined tool holders, characterized in that, include: The first acquisition module is used to acquire the assembly quality inspection pattern generated by the impedance analyzer sweeping the frequency of the non-contact ultrasonic tool holder under no-load conditions. The first determining module is used to determine the assembly quality inspection result between the tool holder body and the transducer and / or the assembly quality inspection result between the secondary side of the non-contact power transmission device and the transducer based on the comparison result between the assembly quality inspection graphic and the preset target graphic; wherein, the non-contact ultrasonic tool holder includes a machining tool holder and the non-contact power transmission device; the machining tool holder includes the tool holder body and the transducer; The target graphic includes a frequency response curve; the frequency response curve is used to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the input impedance of the non-contact ultrasonic scalpel handle, or, to indicate the relationship between the operating frequency of the non-contact ultrasonic scalpel handle and the target phase angle, wherein the target phase angle is the phase angle between the input voltage and the input current of the non-contact ultrasonic scalpel handle. The frequency response curve is obtained based on the operating frequency of the non-contact ultrasonic scalpel corresponding to the first operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the first operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the second operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the second operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the third operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the third operating point, the operating frequency of the non-contact ultrasonic scalpel corresponding to the fourth operating point, the input impedance of the non-contact ultrasonic scalpel corresponding to the fourth operating point, the anti-resonance frequency of the non-contact ultrasonic scalpel, and the resonant frequency of the non-contact ultrasonic scalpel. Wherein, the first working point is the working point on the impedance circle where the real part of the input impedance of the non-contact ultrasonic scalpel is the smallest; the second working point is the working point on the impedance circle where the imaginary part of the input impedance of the non-contact ultrasonic scalpel is the largest; the third working point is the working point on the impedance circle where the real part of the input impedance of the non-contact ultrasonic scalpel is the largest; and the fourth working point is the working point on the impedance circle where the imaginary part of the input impedance of the non-contact ultrasonic scalpel is the smallest. The center and radius of the impedance circle are obtained based on the impedance of the transducer, the primary impedance of the non-contact power transmission device, the secondary impedance of the non-contact power transmission device, and the electrical physical quantity information in the preset non-contact ultrasonic scalpel handle model.

9. An ultrasonic machining tool holder assembly quality inspection device, comprising: A transceiver, a processor, a memory, and a program or instructions stored in the memory and executable on the processor; characterized in that, when the processor executes the program or instructions, it implements the ultrasonic machining tool holder assembly quality inspection method as described in any one of claims 1 to 7.

10. A readable storage medium having a program or instructions stored thereon, characterized in that, When the program or instructions are executed by the processor, they implement the steps in the ultrasonic machining tool holder assembly quality inspection method as described in any one of claims 1 to 7.

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