JP5176456B2 - Ultrasonic horn design support device, ultrasonic horn design support method and program for the device - Google Patents

Description

  The present invention relates to an ultrasonic horn design support device used when designing and manufacturing an ultrasonic horn used in an ultrasonic caulking machine, an ultrasonic processing machine, etc., an ultrasonic horn design support method, and a program therefor It is.

(1): Conventional example 1
Hereinafter, Patent Document 1 will be described as Conventional Example 1. Conventional Example 1 describes the following contents.

  (a): “To provide an ultrasonic horn capable of preventing the occurrence of rolling and abnormal noise and preventing damage to the tip of the ultrasonic horn.” See the summary section.

(b): “The present invention is an ultrasonic processing machine such as an ultrasonic squeezing machine, an ultrasonic caulking machine, an ultrasonic soldering machine, an ultrasonic cutting machine, an ultrasonic welding machine, an ultrasonic cleaning machine, and an ultrasonic stirring machine. It is related to an ultrasonic horn used for the etc. "... Refer to paragraph [0001].
(c): "In practice, the N part of the simple step type horn is often attached with R or the tool part has a complicated shape, and is simply a value designed by the resonance conditional expression (1). In some cases, L may be adjusted by trial and error, or designed by eigenvalue analysis of the finite element method in recent years. ”Paragraph number [0009] reference
(2): Conventional example 2
Hereinafter, Patent Document 2 will be described as Conventional Example 2. Conventional Example 2 describes the following contents.

(a): “The present invention relates to a large cylindrical horn for ultrasonic vibration used for plastic welding or the like, and in particular, there is no need to provide a slot even if the diameter exceeds a quarter wavelength of the operating vibration frequency. Refer to the specification, page 1, lower column, right column, line 10 to page 1, lower column, right column, line 13
(b): “In a large cylindrical horn whose diameter is set to a value exceeding a quarter wavelength of the operating vibration frequency, at least one ring-shaped slit is formed on the input surface and cuts toward the radiation surface about the axial center position. Since the groove is provided, it is possible to make the displacement of the radiation surface uniform without providing a slot. ”... Specification, page 3, right column, line 33 to page 3, right column, number 38 Line reference
(3): Conventional example 3
Hereinafter, Patent Document 3 will be described as Conventional Example 3. Conventional Example 3 describes the following contents.

(a): ". vibrate at a frequency 100KH _Z or high frequency, to provide a high frequency ultrasonic transducer provided with the ultrasonic horn that may amplitude expansion" ... refer to the column summary.

(b): “A tool is fixed to the small end face side of the conical shell horn, and the large end face contact surface vibrates to have the same frequency and common mode as the extended flexural vibration of the conical shell horn including the tool. It is characterized by being driven by a ring-shaped protrusion on which the element is installed. "... See the summary section.
Japanese Patent Laid-Open No. 11-226499 Utility Model Registration No. 2508236 JP-A-6-269077

  (1): The design of the conventional ultrasonic horn has been designed using, for example, the relationship between dimensions obtained by experiments and experience, and the equation for resonance conditions as in Conventional Example 1. Recently, the accuracy of the analysis technique has been improved, and eigenvalues were obtained by the finite element method, the positions of the nodes and antinodes of the horn were obtained from the mode diagram, and the excitation position and the position where the horn was held were obtained.

  The horn designed by the above method has been adjusted to withstand normal use while repeating trial and error. However, in order to realize precise and fine machining, it is necessary to grasp the characteristics of the horn in more detail and to study the optimum shape, vibration conditions and machining conditions. Although the ultrasonic horn alone was evaluated, it was not possible to examine it including processing conditions (for example, plastic processing conditions).

  (2): The ultrasonic horn developed by the conventional design method has only a rough shape (the shape obtained from the eigenvalue analysis), and the detailed shape, for example, the size of the corner R, the step, the taper, and the cross section Fine shapes such as shapes were repeatedly determined by trial and error.

(3): It was hardly possible to examine how the tip of the ultrasonic horn changed during processing by applying ultrasonic vibration to the ultrasonic horn. If there is no resistance, the ultrasonic horn resonating in example 40KH _Z, vibrating in course as the tip also clean Sin waveform (40KH _Z). When a load is applied, the sine wave at the tip of the horn collapses and the tip is shaken greatly.

  (4): Conventional Example 2 relates to a large horn for ultrasonic vibration used for plastic welding or the like, and in particular, a large cylindrical horn that does not need to be provided with a slot even if the diameter exceeds a quarter wavelength of the used vibration frequency. It is about.

  However, Conventional Example 2 is not provided with the essential constituent requirements of the ultrasonic horn design support device of the present invention, and it is the content of the reference level of the present invention.

  (5): Conventional example 3 has a tool fixed to the small end face side of the conical shell horn, and its large end face side contact surface has the same frequency and common mode as the extended flexural vibration of the conical shell horn including the tool. It is characterized by being driven by a ring-shaped projection provided with a vibration element.

  However, Conventional Example 3 does not include the essential constituent requirements of the ultrasonic horn design support device of the present invention, and is just a reference content of the present invention.

  The present invention has been made to solve the conventional problems, and determines the shape of the horn for minimizing the vibration of the tip of the ultrasonic horn, the load condition and the application condition (excitation frequency, amplitude). The purpose is to grasp the vibration characteristics of an ultrasonic horn and to easily obtain a more optimal shape.

  In order to achieve the above object, the present invention is configured as follows.

(1): Display device, display data processing means for processing display data, data input means, design data processing means (configured by a program) for processing design data of an ultrasonic horn, and design in advance An ultrasonic horn design support apparatus for supporting design of an ultrasonic horn while displaying data of a design process on a screen, the data storage means for registering necessary data, the design data processing means, First means for taking in an excitation frequency inputted from the outside, reading registration data from the data storage means according to the excitation frequency, and determining the total length of the ultrasonic horn and the shape of the ultrasonic horn based on an instruction from the outside; Based on the determined total length of the ultrasonic horn and the shape of the ultrasonic horn, a model of the ultrasonic horn by the finite element method is created, and eigenvalue analysis of the model is performed. And, as a result of the ultrasonic horn eigenvalue analysis, third means for determining whether or not there is an eigenvalue of longitudinal vibration in the vicinity of the excitation frequency, and in the determination, an eigenvalue of longitudinal vibration is in the vicinity of the excitation frequency. Otherwise, repeat the shape correction and eigenvalue analysis of the ultrasonic horn, and if it is determined that there is an eigenvalue of longitudinal vibration in the vicinity of the excitation frequency, use the result of eigenvalue analysis to determine the node of the ultrasonic horn longitudinal vibration. A fourth means for obtaining, and a fifth means for performing an impact analysis by obtaining an output waveform by applying an input wave of an ultrasonic wave to be actually used centering on the obtained node. The design support of the ultrasonic horn is performed while displaying information on the screen of the display device .

  (2): In the above (1), the design data processing means includes a sixth means for adding a model obtained by a finite element method of a workpiece during the impact analysis, and a machining simulation for the model. And an eighth means for giving a feed rate to the ultrasonic horn or the workpiece model in accordance with conditions, and a result of giving the feed rate to the workpiece model, And an ninth means for repeatedly performing the process from the beginning when an instruction is given that there is a problem with the ultrasonic horn or processing.

(Function)
FIG. 1 is a diagram illustrating the principle of the present invention. The operation of the present invention based on the above configuration will be described below with reference to FIG.

(a): Action of (1) The design data processing means (program constituting the design data processing section 6) is controlled by the main control section 5 and the first means (program) is externally (data input section 2). ) Is input and stored in the input data storage unit 11. Then, in accordance with the excitation frequency, the registration data is read from the data storage means (the registration data storage unit 10 of the data storage unit 7), and based on the instruction from the outside (data input unit 2), the total length of the ultrasonic horn and the ultrasonic horn Determine the shape.

  Next, the second means (program) creates a model of the ultrasonic horn by the finite element method based on the determined total length of the ultrasonic horn and the shape of the ultrasonic horn, and performs eigenvalue analysis of the model. Then, the third means (program) determines whether or not there is a longitudinal vibration eigenvalue near the excitation frequency as a result of the ultrasonic horn eigenvalue analysis.

  Next, the fourth means (program) repeats the modification of the shape of the ultrasonic horn and the eigenvalue analysis if there is no eigenvalue of longitudinal vibration in the vicinity of the excitation frequency in the above determination, and longitudinal vibration near the excitation frequency. When it is determined that there is an eigenvalue, the node of the ultrasonic horn longitudinal vibration is obtained using the result of the eigenvalue analysis.

Next, the fifth means (program) performs an impact analysis by obtaining an output waveform by applying an input wave of an ultrasonic wave to be actually used around the obtained node. In this case, the display data processing unit 8 processes the design process information and supports the design of the ultrasonic horn while displaying it on the screen of the display device 3 .

  In this way, the shape of the horn for minimizing the vibration of the tip of the ultrasonic horn, the load condition and the application condition (excitation frequency, amplitude) are determined, and the vibration characteristics of the ultrasonic horn are grasped. A more optimal shape can be easily obtained.

(b): Action of (2) The design data processing means (program of the design data processing section 6) is controlled by the main control section 5 so that the sixth means (program) is to be processed during the impact analysis. Add a model obtained by the finite element method of an object. Next, seventh means (program) performs machining simulation on the model.

  Then, the eighth means (program) gives the feed speed to the ultrasonic horn or the workpiece model in accordance with the conditions. In this case, if the eighth means (program) gives a feed speed to the workpiece model and an instruction is issued from the outside that there is a problem with the ultrasonic horn or machining, the process from the beginning is repeated. Do.

  In this way, the shape of the horn for minimizing the vibration of the tip of the ultrasonic horn, the load condition and the application condition (excitation frequency, amplitude) are determined, and the vibration characteristics of the ultrasonic horn are grasped. A more optimal shape can be easily obtained.

  The present invention has the following effects in claims 1 to 5.

  (a): Determine the shape of the horn to minimize vibration at the tip of the ultrasonic horn, load conditions and application conditions (excitation frequency, amplitude), and grasp the vibration characteristics of the ultrasonic horn, making it more optimal A simple shape is required.

  (b): Regarding the design of the ultrasonic horn, the detailed shape has been determined by trial and error. However, by using the ultrasonic horn design support device according to the present invention, the vibration characteristics of the ultrasonic horn can be grasped and more optimal. Not only can the shape be easily determined, but also the processing using the ultrasonic wave (plastic processing) including the shape of the workpiece in addition to the ultrasonic horn shape can be supported.

  (c): Eigenvalue analysis is usually used in the basic design of ultrasonic horns. However, if the ultrasonic horn is processed by applying ultrasonic waves to the ultrasonic horn, it will not be understood unless actual processing is performed. The ultrasonic horn design support apparatus of the present invention is effective as a means for determining this.

  (d): Since an ultrasonic horn for processing currently in use in the world has a very strong structure and strength compared to the workpiece, it can be used without problems if the shape is determined by eigenvalue analysis. However, fine processing is required for these processes using ultrasonic waves. Therefore, the ultrasonic horn shape cannot be handled only as strong and large as before.

  Various types of ultrasonic horns such as elongated ones and non-uniform ones are conceivable. Whether it vibrates ultrasonically or not can be determined by eigenvalue analysis, but it is important whether it is actually suitable for processing. It is worth using the ultrasonic horn design support device of the present invention as a means for judging that.

  (e): When judging the strength of the ultrasonic horn, it is possible to see the degree of bending or the stress value when simply pressing without an ultrasonic wave. It is also true that such a judgment is often sufficient. However, when an ultrasonic wave is applied, a hammering effect and a friction reducing effect act, and problems different from general machining occur.

  While the hammering effect dramatically increases processing power, the ultrasonic horn is extremely burdensome. Although the friction reduction effect can reduce the resistance of processing, the ultrasonic horn causes the brill. As in the embodiment of the present invention, in the case of a φ1.2 horn, even if the whole is bent without an ultrasonic wave, the tip does not shake greatly. It is the ultrasonic horn design support device of the present invention that can determine how these two effects work.

§1: Outline Description FIG. 1 is a diagram illustrating the principle of the present invention. In FIG. 1, 1 is an ultrasonic horn design support device main body, 2 is a data input unit, 3 is a display device, 5 is a main control unit (for example, CPU), 6 is a design data processing unit (program), and 7 is data storage. , 8 is a display data processing unit, 10 is a registered data storage unit, 11 is an input data storage unit, and 12 is a processing result data storage unit.

  (1): The ultrasonic horn design support device includes an ultrasonic horn design support device main body 1, a display device 3, and a data input means (data input unit 2). The ultrasonic horn design support device main body 1 includes a main control unit (processor such as a CPU) 5, display data processing means (display data processing unit 8) for processing display data, and design data for the ultrasonic horn. Design data processing means (design data processing section 6: program) for performing processing and data storage means (data storage section 7) for pre-registering data necessary for design are provided, and design process data is displayed on the screen. The design of the ultrasonic horn is supported while displaying.

In this design support apparatus, the design data processing means (design data processing unit 6: program) takes in the excitation frequency input from the outside (from the data input unit 2) and registers it from the data storage means according to the excitation frequency. First means for reading data (reading out from the registered data storage unit 10) and determining the total length of the ultrasonic horn and the ultrasonic horn shape based on an instruction from the outside, the total length of the ultrasonic horn and the ultrasonic horn shape determined above Based on the above, a second means for creating an ultrasonic horn model by the finite element method and performing eigenvalue analysis of the model, and as a result of the ultrasonic horn eigenvalue analysis, an eigenvalue of longitudinal vibration is found in the vicinity of the excitation frequency. If there is no eigenvalue of longitudinal vibration in the vicinity of the excitation frequency in the above-mentioned determination and the third means for determining whether or not there is, the shape correction of the ultrasonic horn and eigenvalue analysis are repeated. If it is determined that there is an eigenvalue of longitudinal vibration in the vicinity of the excitation frequency, using the result of eigenvalue analysis, a fourth means for obtaining a node of the ultrasonic horn longitudinal vibration and the obtained node as a center And a fifth means for performing an impact analysis by applying an input wave of an ultrasonic wave to be actually used to obtain an output waveform, and displaying the design process information on the screen of the display device. Supports horn design.

  (2): In the above (1), the design data processing means (design data processing unit 6) includes a sixth means for adding a model obtained by a finite element method of the workpiece during the impact analysis; A seventh means for performing a machining simulation on the model; an eighth means for giving a feed speed to the ultrasonic horn or the workpiece model in accordance with conditions; and a feed speed to the workpiece model. As a result, when there is an instruction from the outside that there is a problem with the ultrasonic horn or the processing, there is provided a ninth means for repeatedly performing the process from the beginning.

§2: Description of configuration of ultrasonic horn design support device FIG. 2 is an explanatory diagram of the ultrasonic horn design support device. As shown in FIG. 2, the ultrasonic horn design support device includes an ultrasonic horn design support device main body (computer main body) 1, a data input unit 2, a display device 3, and the like. And a computer such as a workstation main body.

  The ultrasonic horn design support device main body (computer main body) 1 is provided with a main control unit (for example, CPU) 5, a design data processing program 6A, a data storage unit 7, a display data processing unit 8, a work memory 9, and the like. It is. The data storage unit 7 includes a registration data storage unit 10, an input data storage unit 11, a processing result data storage unit 12, and the like. The design data processing program 6A may be stored in the data storage unit 7 at first and stored in another memory before the processing is started.

  The registration data storage unit 10 is registered in advance by an operator or the like from the data input unit 2 with various data used when starting the design support of the ultrasonic horn. The input data storage unit 11 is used by an operator or the like to input and store data and the like necessary after starting the design support of the ultrasonic horn. The processing result data storage unit 12 stores data of results obtained by performing various types of processing for supporting the design of the ultrasonic horn.

  The display data processing unit 8 processes data to be displayed on the display shadow surface of the display device 3 into display data and sends the data to the display device 3. The work memory 9 stores data required for the work by the design data processing program 6A for work.

  In the apparatus having the above-described configuration, the design data processing program 6A is read and executed by the main control unit (CPU) 5 to execute processing performed by the ultrasonic horn design support apparatus. However, the present invention is not limited to such an example. For example, a magnetic disk device (not shown) is provided in the ultrasonic horn design support device main body (computer main body) 1, and the magnetic disk of this magnetic disk device includes: The design data processing program is stored as follows, and the main control unit (CPU) 5 reads out and executes the program, so that the processing can be performed. In this case, the design data processing program can be stored in the magnetic disk device as follows.

  (a): A design data processing program (program data created by another device) stored in a removable disk created by another device is read by a removable disk drive (not shown), and the recording medium of the magnetic disk device To remember.

  (b): Receives data such as a design data processing program transmitted from another device via a communication line via a communication control unit (not shown), and stores the data in a recording medium of the magnetic disk device .

§3: Explanation of processing of ultrasonic horn design support device FIG. 3 is a processing flowchart (part 1) of the ultrasonic horn design support device, and FIG. 4 is a processing flowchart (part 2) of the ultrasonic horn design support device. Hereinafter, the processing of the ultrasonic horn design support apparatus will be described with reference to FIGS. In the process described below, the design support of the ultrasonic horn is performed while displaying the data of the design process on the screen.

  When the ultrasonic horn design support device is activated and the process is started, first, the excitation frequency f is determined (S1). In this case, as for the excitation frequency, the operator operates the keyboard of the data input unit 2 and inputs the determination data of the frequency f. At this time, the design data processing program 6 </ b> A stores the excitation frequency f, which is the determination data, in the input data storage unit 11 of the data storage unit 7.

  Next, the design data processing program 6A calculates the total length of the ultrasonic horn (S2). In this case, the design data processing program 6A reads the data of the physical property value E (E: Young's modulus), mass density (ρ), and quenching hardness correction (κ) of the horn from the registered data storage unit 10, and once the work memory 9 Remember to use it.

  In this case, the ultrasonic horn is vibrated using a longitudinal wave (dense wave) propagating in the metal. The wave velocity C of longitudinal waves is C = √ (E / ρ), E = longitudinal elastic modulus, ρ = mass density, for example, the velocity of longitudinal waves in a metal is approximately C = 5000 (m / sec). is there.

The ultrasonic vibration frequency applied to the ultrasonic horn f, f = 40KH case of a _Z, the wavelength lambda (the total length of the horn) is, λ = C / f = 5000 /40000 = 0.125 (m) = 125 (Mm). Usually, since heat treatment (quenching) is performed on the ultrasonic horn, the hardness of the ultrasonic horn material is increased and the Young's modulus E is increased. Generally, the Young's modulus E increases by 15 to 25% by heat treatment. Therefore, Young's modulus E ′ = (1 + κ) × E. In this case, κ = 1.15 to 0.25 (experience value).

  Therefore, when calculating the total length of the ultrasonic horn, data of Young's modulus E, mass density ρ, and quenching hardness correction κ are stored in advance in the registration data table of the registration data storage unit 10, and these data are read out. Calculate the total length of the ultrasonic horn.

  Next, the design data processing program 6A determines the shape (detailed shape) of the ultrasonic horn (S3). In this process, the shaft diameter, step, corner portion, etc. of the ultrasonic horn are read out from the registration data table of the registration data storage unit 10 and determined. A detailed description of how to decide will be given later.

  Next, the design data processing program 6A creates a finite element model (hereinafter simply referred to as “FE model”) of the ultrasonic horn with reference to the obtained detailed shape of the ultrasonic horn, and performs eigenvalue analysis (free at both ends). Perform (S4). In this case, the eigenvalue analysis is performed using the finite element method as described above, but the technique of performing the eigenvalue analysis using the finite element method is a well-known technique (also described in the publication of Conventional Example 1). Therefore, detailed description is omitted. Also in this case, a detailed description will be given later.

  Next, as a result of the ultrasonic horn eigenvalue analysis, the design data processing program 6A determines whether there is an eigenvalue of longitudinal vibration in the vicinity of the excitation frequency f (eigenvalue determination) (S5). This determination is performed by previously registering eigenvalue conditions necessary for determination in the registration data table of the registered data storage unit 10 and determining whether or not the design data processing program 6A satisfies the conditions. This is an automatic process.

For example, when ultrasonic vibration at 40KH _Z, the ultrasonic horn is also necessary that the eigenvalues of the longitudinal vibration in this frequency near there. When there is no eigenvalue (when NG is determined), the process returns to S3 and the shape correction and eigenvalue analysis of the ultrasonic horn are repeated.

  Thereafter, the design data processing program 6A obtains a node of the ultrasonic horn when it is determined in the eigenvalue determination that there is an eigenvalue, that is, when the eigenvalue determination is OK (S6). In this process, the node position of the longitudinal vibration of the ultrasonic horn is obtained using the result of the eigenvalue analysis. A position where the vibration amplitude of the ultrasonic horn is small becomes a vibration node.

  Next, the design data processing program 6A performs ultrasonic vibration (resonance) of the ultrasonic horn (S7). In this process, the input piece amplitude is a. Then, ultrasonic vibration is applied to a symmetrical position within ± 1 / 16λ with the position obtained in the process of S6 as the center. The vibration gives a sine wave (Sin wave) with a phase difference of 180 ° to the node. At this time, the operator confirms the output amplitude at the tip on the screen of the display device 3. That is, it is checked on the screen of the display device 3 whether the required output amplitude is output.

  Next, the design data processing program 6A adds the FE model of the workpiece (S8). In this case, the physical property value of the workpiece, the shape of the workpiece, the constraint / load conditions, and the like are used. That is, in this process, the design data processing program 6A creates a workpiece or an FE model having a shape imitating the workpiece.

  Next, the design data processing program 6A performs a machining simulation (S9). In this process, a feed speed is given to the ultrasonic horn or the workpiece according to the conditions. Then, an analysis simulating actual processing (mainly plastic processing) is performed. For example, the amount of vibration of the ultrasonic horn is calculated when the workpiece is fixed and a feed speed V = 20 (mm / sec) is applied to the ultrasonically oscillated ultrasonic horn.

  And the processing defect of an ultrasonic horn is determined (S10). In this process, the amount of vibration at the tip of the ultrasonic horn and the influence on other structures are checked. The operator sees the behavior of the workpiece or the FE model imitating it on the display screen of the display device 3.

  As a result, if the determination is NG, the process proceeds to S3. Then, the output amplitude a at the tip of the ultrasonic horn, the feed speed V, and the condition of the workpiece are corrected in ultrasonic processing. Also, review the ultrasonic horn shape and workpiece shape. Thereafter, when the determination result is OK in the process of S10, this process is terminated.

§4: Detailed processing description Hereinafter, the processing of the flowchart will be described in more detail. In the following description, the symbols in steps S1 to S10 used in FIGS.

(1): Determination of vibration frequency f (see S1)
In this case, the operator inputs to the device from the data input unit 2 as a pressure vibration frequency f = 40.0KH _Z. Many of the current ultrasonic oscillators have a fixed (constant) excitation frequency. Since the oscillator frequency cannot be freely changed, it is necessary to create an ultrasonic horn so as to match the oscillation frequency.

(2): Calculate the total length of the ultrasonic horn (see S2)
An example of calculating the total length of the ultrasonic horn is as shown in FIG. 5A.

(a): ultrasonic horn property value E = 220000.0 (MPa), mass density ρ = 8.67 × 10 ⁻⁹ (ton / mm ³ )
(b): Hardening hardness correction κ = 0.25 (hardness correction is Δ25%)
E ′ = (1 + κ) × E = 1.25 × 220000.0 = 275000.0
Therefore, propagation speed C = √ (275000.0 / 8.67E−09) = 5631924.16 (mm / sec)
Wavelength λ (total length of ultrasonic horn) = C / F = 5631924.16 / 40000≈140 (mm)
(Note that the cross-sectional shape is arbitrary. It need not be a circle.)
A detailed shape example of the ultrasonic horn is shown in FIG. 5A based on the result calculated in the above example. In the detailed shape example of FIG. 5A, the total length of the ultrasonic horn is about 140 mm when the length of the ultrasonic horn main body 20 and the length of the tip 21 are matched.

(3): Ultrasonic horn model creation and eigenvalue analysis (free at both ends) (S4)
The FE mesh of the ultrasonic horn is shown in FIG. 5B. In this model, the ultrasonic horn body 20 has a shape as shown in the figure.

(4): Eigenvalue analysis (free at both ends) (S4)
In the case of eigenvalue analysis, it is a normal practice to constrain (or fix) a part of the analysis model. However, since the ultrasonic horn is attached to the tip of the vibration unit, the analysis method is such that the entire ultrasonic horn vibrates, and therefore, eigenvalue analysis is performed without restraining anything. The eigenvalue analysis results are shown in FIG.

In the eigenvalue analysis results shown in FIG. 6A, modes 1 to 40 are shown, and the frequency of each mode is shown. Also, the mode = 33, longitudinal vibration in the case of frequency = 40.807KH _Z is shown.

(5): Eigenvalue determination (S5)
For example, Mode 33, 40.807 (KH _Z ) is longitudinal vibration (see the above example). Therefore, the eigenvalue determination is OK.

  (6): The node of the longitudinal vibration of the ultrasonic horn is obtained (S6).

  The vibration node in the ultrasonic horn is at a position 34.81 (mm) from the bottom as shown in FIG. 7A.

(7): Confirmation of ultrasonic vibration (resonance) of the ultrasonic horn (S7)
As shown in FIG. 7B, the ultrasonic vibration is located at a symmetrical position within the λ / 16 (= 8.75 mm) before and after the node position of the ultrasonic horn as described above (34.81 mm from the bottom). Is applied (see the ultrasonic wave application position shown in FIG. 7B).

To B of FIG. 7, the output waveform example of the input waveform (40KH _Z) are shown. In the illustration of the figures and the output waveform example of an input waveform (40KH _Z), both the horizontal axis indicates time (time), the vertical axis represents a displacement waveform (displacement). The output piece amplitude a is 0.0036 (mm).

(8): Addition of FE model of workpiece (S8)
The FE model to which workpieces (rings and steel balls) are added is as shown in FIG. 8A. In FIG. 8A, the added workpiece FE model is composed of a steel ball 23 and a ring 24, and an ultrasonic vibration is applied to the workpiece FE model by applying the tip 21 of the ultrasonic horn. Yes. That is, the tip 21 of the ultrasonic horn sends out the steel ball 23 while ultrasonically vibrating, and causes the ring 24 to penetrate.

(9): Machining simulation (S9)
In the FE model of the workpiece, the ultrasonic horn is fed at a speed V = 20 (mm / sec), a machining simulation is performed, and the behavior of the tip 21 of the ultrasonic horn is analyzed. The analysis result is as shown in FIG. 8B. In the analysis result of FIG. 8B, the horizontal axis indicates time and the vertical axis indicates nodout data.

(10): Defect determination of ultrasonic horn (S10)
If the ultrasonic horn tip deflection amount is large, for example, if δ = 1.13 (mm), the determination is NG.

(11): Detailed shape correction of ultrasonic horn (example in which the determination result in S10 is NG and the detailed shape is corrected)
For example, the diameter of the tip of the ultrasonic horn is changed from φ1.2 to φ = 1.7. The shape of the ultrasonic horn after the change is as shown in FIG.

(12): Example of ultrasonic horn model creation and eigenvalue analysis (both ends are free) An FE mesh of an ultrasonic horn is shown in FIG. 9B. The result of eigenvalue analysis (both ends are free) is as shown in FIG.

In the eigenvalue analysis (both ends are free) example shown in FIG. 10A, modes 1 to 40 are shown, and the frequency of each mode is shown. Also, the mode = 29, longitudinal vibration in the case of frequency = 40.795KH _Z is shown.

(13): Eigenvalue determination Mode 29, 40.795 (KH _Z ) is longitudinal vibration. In this case, the eigenvalue determination is OK.

(14): Longitudinal vibration node of the ultrasonic horn The vibration node is at a position 34.32 (mm) from the bottom as shown in FIG.

(15): The B view of the check example Figure 11 of the ultrasonic vibration of the ultrasonic horn (resonance), have been shown confirmation of the ultrasonic vibration of the ultrasonic horn (resonance) is input waveform (40KH _Z) An output waveform example in the case of is shown. In the illustration of the figures and the output waveform example of an input waveform (40KH _Z), both the horizontal axis indicates time (time), the vertical axis represents a displacement waveform (displacement). Further, the output piece amplitude a is 0.0039 (mm).

(16): Correction of Workpiece FE Model FIG. 12A shows a correction example of the work piece FE model, and the work piece FE model is corrected. In this case, the following changes have been made.

(a): Steel ball diameter change
(b): Ring diameter change (workpiece shape change)
(17): Example of machining simulation A feed at a speed V = 20 (mm / sec) is applied to the ultrasonic horn, a machining simulation is performed, and the behavior of the tip of the ultrasonic horn is analyzed. The analysis results are shown in FIG. In the analysis result of FIG. 12B, the horizontal axis indicates time and the vertical axis indicates nodout data.

(18): Defect determination of ultrasonic horn (S10)
For example, if the ultrasonic horn tip deflection is large, if δ = 0.033 (mm), the determination is OK.

§5: Explanation of additional notes The following configuration is added to the above description.

(Appendix 1)
Display device, display data processing means for processing display data, data input means, design data processing means for processing design data of ultrasonic horn, and data storage for preregistering data necessary for design An ultrasonic horn design support device for supporting design of an ultrasonic horn while displaying design process data on a screen,
The design data processing means includes
First means for taking in an excitation frequency inputted from the outside, reading registration data from the data storage means according to the excitation frequency, and determining the total length of the ultrasonic horn and the shape of the ultrasonic horn based on an instruction from the outside; ,
A second means for creating an ultrasonic horn model by the finite element method based on the determined total length of the ultrasonic horn and the ultrasonic horn shape, and performing eigenvalue analysis of the model;
As a result of the ultrasonic horn eigenvalue analysis, third means for determining whether there is an eigenvalue of longitudinal vibration in the vicinity of the excitation frequency;
If there is no longitudinal vibration eigenvalue near the excitation frequency in the above determination, the ultrasonic horn shape correction and eigenvalue analysis are repeated, and if it is determined that the longitudinal vibration eigenvalue is near the excitation frequency, eigenvalue analysis is performed. A fourth means for obtaining a node of the longitudinal vibration of the ultrasonic horn using the result of
Centering on the obtained node, a fifth means for performing an impact analysis by applying an ultrasonic input wave actually used to obtain an output waveform;
Wherein the design process of information the display device ultrasonic horn design support apparatus according to claim display while performing the design support of the ultrasonic horn to screen.

(Appendix 2)
The design data processing means includes
A sixth means for adding a model obtained by the finite element method of the workpiece in the impact analysis;
A seventh means for performing a machining simulation on the model;
According to conditions, an ultrasonic horn, or an eighth means for giving a feed rate to the workpiece model;
As a result of giving a feed speed to the model of the workpiece, when an instruction is issued from the outside that there is a defect in the ultrasonic horn or machining, ninth means for repeatedly performing the process from the beginning;
The ultrasonic horn design support device according to appendix 1, characterized by comprising:

(Appendix 3)
Display device, display data processing means for processing display data, data input means, design data processing means for processing design data of ultrasonic horn, and data storage for preregistering data necessary for design An ultrasonic horn design support method of an ultrasonic horn design support device for supporting design of an ultrasonic horn while displaying design process data on a screen,
By the processing of the design data processing means,
A first procedure for taking in an externally input excitation frequency, reading out registration data from the data storage means according to the excitation frequency, and determining an overall length of the ultrasonic horn and an ultrasonic horn shape based on an external instruction; ,
Based on the determined total length of the ultrasonic horn and the shape of the ultrasonic horn, a second procedure for creating a model of the ultrasonic horn by the finite element method and performing eigenvalue analysis of the model,
As a result of the ultrasonic horn eigenvalue analysis, a third procedure for determining whether there is an eigenvalue of longitudinal vibration in the vicinity of the excitation frequency;
If there is no longitudinal vibration eigenvalue near the excitation frequency in the above determination, the ultrasonic horn shape correction and eigenvalue analysis are repeated, and if it is determined that the longitudinal vibration eigenvalue is near the excitation frequency, eigenvalue analysis is performed. A fourth procedure for determining the longitudinal vibration node of the ultrasonic horn using the result of
Centering on the obtained node, the fifth procedure for performing the impact analysis by applying the input wave of the ultrasonic wave actually used and obtaining the output waveform is performed,
Ultrasonic horn design support method of the ultrasonic horn design support apparatus characterized by the design support of the ultrasonic horn while displaying information of the design process on the screen of the display device.

(Appendix 4)
By the processing of the design data processing means,
A sixth procedure for adding a model obtained by the finite element method of the workpiece in the impact analysis;
A seventh procedure for performing machining simulation on the model;
An eighth procedure for providing a feed rate to an ultrasonic horn or workpiece model in accordance with the conditions;
As a result of giving a feed speed to the model of the workpiece, if an instruction is issued from the outside that there is a defect in the ultrasonic horn or machining, a ninth procedure for repeating the process from the beginning,
The ultrasonic horn design support method of the ultrasonic horn design support device according to appendix 3, wherein:

(Appendix 5)
Display device, display data processing means for processing display data, data input means, design data processing means for processing design data of ultrasonic horn, and data storage for preregistering data necessary for design A computer of an ultrasonic horn design support device that supports design of an ultrasonic horn while displaying design process data on a screen.
By the processing of the design data processing means,
A first procedure for taking in an externally input excitation frequency, reading out registration data from the data storage means according to the excitation frequency, and determining an overall length of the ultrasonic horn and an ultrasonic horn shape based on an external instruction; ,
Based on the determined total length of the ultrasonic horn and the shape of the ultrasonic horn, a second procedure for creating a model of the ultrasonic horn by the finite element method and performing eigenvalue analysis of the model,
As a result of the ultrasonic horn eigenvalue analysis, a third procedure for determining whether there is an eigenvalue of longitudinal vibration in the vicinity of the excitation frequency;
If there is no longitudinal vibration eigenvalue near the excitation frequency in the above determination, the ultrasonic horn shape correction and eigenvalue analysis are repeated, and if it is determined that the longitudinal vibration eigenvalue is near the excitation frequency, eigenvalue analysis is performed. A fourth procedure for determining the longitudinal vibration node of the ultrasonic horn using the result of
Centering on the obtained node, a fifth procedure for performing an impact analysis by applying an ultrasonic input wave actually used to obtain an output waveform;
A program to realize

(Appendix 6)
By the processing of the design data processing means,
A sixth procedure for adding a model obtained by the finite element method of the workpiece in the impact analysis;
A seventh procedure for performing machining simulation on the model;
An eighth procedure for providing a feed rate to an ultrasonic horn or workpiece model in accordance with the conditions;
As a result of giving a feed speed to the model of the workpiece, if an instruction is issued from the outside that there is a defect in the ultrasonic horn or machining, a ninth procedure for repeating the process from the beginning,
The program according to appendix 5 for realizing

(Appendix 7)
Display device, display data processing means for processing display data, data input means, design data processing means for processing design data of ultrasonic horn, and data storage for preregistering data necessary for design A computer of an ultrasonic horn design support device that supports design of an ultrasonic horn while displaying design process data on a screen.
By the processing of the design data processing means,
A first procedure for taking in an externally input excitation frequency, reading out registration data from the data storage means according to the excitation frequency, and determining an overall length of the ultrasonic horn and an ultrasonic horn shape based on an external instruction; ,
Based on the determined total length of the ultrasonic horn and the shape of the ultrasonic horn, a second procedure for creating a model of the ultrasonic horn by the finite element method and performing eigenvalue analysis of the model,
As a result of the ultrasonic horn eigenvalue analysis, a third procedure for determining whether there is an eigenvalue of longitudinal vibration in the vicinity of the excitation frequency;
If there is no longitudinal vibration eigenvalue near the excitation frequency in the above determination, the ultrasonic horn shape correction and eigenvalue analysis are repeated, and if it is determined that the longitudinal vibration eigenvalue is near the excitation frequency, eigenvalue analysis is performed. A fourth procedure for determining the longitudinal vibration node of the ultrasonic horn using the result of
Centering on the obtained node, a fifth procedure for performing an impact analysis by applying an ultrasonic input wave actually used to obtain an output waveform;
The computer-readable recording medium which recorded the program for implement | achieving.

(Appendix 8)
By the processing of the design data processing means,
A sixth procedure for adding a model obtained by the finite element method of the workpiece in the impact analysis;
A seventh procedure for performing machining simulation on the model;
An eighth procedure for providing a feed rate to an ultrasonic horn or workpiece model in accordance with the conditions;
As a result of giving a feed speed to the model of the workpiece, if an instruction is issued from the outside that there is a defect in the ultrasonic horn or machining, a ninth procedure for repeating the process from the beginning,
The computer-readable recording medium which recorded the program of Additional remark 7 for implement | achieving.

It is a principle explanatory view of the present invention. It is explanatory drawing of the ultrasonic horn design assistance apparatus in embodiment. It is a process flowchart (the 1) of the ultrasonic horn design assistance apparatus in embodiment. It is a process flowchart (the 2) of the ultrasonic horn design assistance apparatus in embodiment. It is explanatory drawing (the 1) of the specific example in embodiment, A figure is an example of ultrasonic horn total length calculation, the detailed shape example of an ultrasonic horn, B figure is model creation and eigenvalue analysis (both ends free) of an ultrasonic horn ) An example. It is explanatory drawing (the 2) of the specific example in embodiment, A figure is an example of an eigenvalue analysis (both ends free). It is explanatory drawing (the 3) of the specific example in embodiment, A figure is an example of the node of ultrasonic horn longitudinal vibration, B figure is a confirmation example of the ultrasonic vibration (resonance) of an ultrasonic horn. It is explanatory drawing (the 4) of the specific example in embodiment, A figure is an additional example of the workpiece FE model, B figure is an example of a process simulation. It is explanatory drawing (the 5) of the specific example in embodiment, A figure is an example of detailed shape correction of an ultrasonic horn, B figure is an example of ultrasonic horn model creation and eigenvalue analysis (both ends free). It is explanatory drawing (the 6) of the specific example in embodiment, A figure is an example of an eigenvalue analysis (both ends free). It is explanatory drawing (the 7) of the specific example in embodiment, A figure is an example of the node of ultrasonic horn longitudinal vibration, B figure is an example of confirmation of the ultrasonic vibration (resonance) of an ultrasonic horn. It is explanatory drawing (the 8) of the specific example in embodiment, A figure is a modification example of the workpiece FE model, B figure is a machining simulation example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ultrasonic horn design support apparatus main body 2 Data input part 3 Display apparatus 5 Main control part 6 Design data processing part 6A Design data processing program 7 Data storage part 8 Display data processing part 10 Registration data storage part 11 Input data storage part 12 Process Result data storage section 20 Ultrasonic horn body 21 Tip section 23 Steel ball 24 Ring

Claims (5)

Display device, display data processing means for processing display data, data input means, design data processing means for processing design data of ultrasonic horn, and data storage for preregistering data necessary for design An ultrasonic horn design support device for supporting design of an ultrasonic horn while displaying design process data on a screen,
The design data processing means includes
First means for taking in an excitation frequency inputted from the outside, reading registration data from the data storage means according to the excitation frequency, and determining the total length of the ultrasonic horn and the shape of the ultrasonic horn based on an instruction from the outside; ,
A second means for creating an ultrasonic horn model by the finite element method based on the determined total length of the ultrasonic horn and the ultrasonic horn shape, and performing eigenvalue analysis of the model;
As a result of the ultrasonic horn eigenvalue analysis, third means for determining whether there is an eigenvalue of longitudinal vibration in the vicinity of the excitation frequency;
If there is no longitudinal vibration eigenvalue near the excitation frequency in the above determination, the ultrasonic horn shape correction and eigenvalue analysis are repeated, and if it is determined that the longitudinal vibration eigenvalue is near the excitation frequency, eigenvalue analysis is performed. A fourth means for obtaining a node of the longitudinal vibration of the ultrasonic horn using the result of
Centering on the obtained node, a fifth means for performing an impact analysis by applying an ultrasonic input wave actually used to obtain an output waveform;
Wherein the design process of information the display device ultrasonic horn design support apparatus according to claim display while performing the design support of the ultrasonic horn to screen. The design data processing means includes
A sixth means for adding a model obtained by the finite element method of the workpiece in the impact analysis;
A seventh means for performing a machining simulation on the model;
According to conditions, an ultrasonic horn, or an eighth means for giving a feed rate to the workpiece model;
As a result of giving a feed speed to the model of the workpiece, when an instruction is issued from the outside that there is a defect in the ultrasonic horn or machining, ninth means for repeatedly performing the process from the beginning;
The ultrasonic horn design support apparatus according to claim 1, comprising: Display device, display data processing means for processing display data, data input means, design data processing means for processing design data of ultrasonic horn, and data storage for preregistering data necessary for design An ultrasonic horn design support method of an ultrasonic horn design support device for supporting design of an ultrasonic horn while displaying design process data on a screen,
By the processing of the design data processing means,
A first procedure for taking in an externally input excitation frequency, reading out registration data from the data storage means according to the excitation frequency, and determining an overall length of the ultrasonic horn and an ultrasonic horn shape based on an external instruction; ,
Based on the determined total length of the ultrasonic horn and the shape of the ultrasonic horn, a second procedure for creating a model of the ultrasonic horn by the finite element method and performing eigenvalue analysis of the model,
As a result of the ultrasonic horn eigenvalue analysis, a third procedure for determining whether there is an eigenvalue of longitudinal vibration in the vicinity of the excitation frequency;
If there is no longitudinal vibration eigenvalue near the excitation frequency in the above determination, the ultrasonic horn shape correction and eigenvalue analysis are repeated, and if it is determined that the longitudinal vibration eigenvalue is near the excitation frequency, eigenvalue analysis is performed. A fourth procedure for determining the longitudinal vibration node of the ultrasonic horn using the result of
Centering on the obtained node, the fifth procedure for performing the impact analysis by applying the input wave of the ultrasonic wave actually used and obtaining the output waveform is performed,
Ultrasonic horn design support method of the ultrasonic horn design support apparatus characterized by the design support of the ultrasonic horn while displaying information of the design process on the screen of the display device. By the processing of the design data processing means,
A sixth procedure for adding a model obtained by the finite element method of the workpiece in the impact analysis;
A seventh procedure for performing machining simulation on the model;
An eighth procedure for providing a feed rate to an ultrasonic horn or workpiece model in accordance with the conditions;
As a result of giving a feed speed to the model of the workpiece, if an instruction is issued from the outside that there is a defect in the ultrasonic horn or machining, a ninth procedure for repeating the process from the beginning,
The ultrasonic horn design support method of the ultrasonic horn design support apparatus according to claim 3, wherein: Display device, display data processing means for processing display data, data input means, design data processing means for processing design data of ultrasonic horn, and data storage for preregistering data necessary for design A computer of an ultrasonic horn design support device that supports design of an ultrasonic horn while displaying design process data on a screen.
By the processing of the design data processing means,
A first procedure for taking in an externally input excitation frequency, reading out registration data from the data storage means according to the excitation frequency, and determining an overall length of the ultrasonic horn and an ultrasonic horn shape based on an external instruction; ,
Based on the determined total length of the ultrasonic horn and the shape of the ultrasonic horn, a second procedure for creating a model of the ultrasonic horn by the finite element method and performing eigenvalue analysis of the model,
As a result of the ultrasonic horn eigenvalue analysis, a third procedure for determining whether there is an eigenvalue of longitudinal vibration in the vicinity of the excitation frequency;
If there is no longitudinal vibration eigenvalue near the excitation frequency in the above determination, the ultrasonic horn shape correction and eigenvalue analysis are repeated, and if it is determined that the longitudinal vibration eigenvalue is near the excitation frequency, eigenvalue analysis is performed. A fourth procedure for determining the longitudinal vibration node of the ultrasonic horn using the result of
Centering on the obtained node, a fifth procedure for performing an impact analysis by applying an ultrasonic input wave actually used to obtain an output waveform;
A program to realize

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