TWI716699B - Ultrasonic frequency adjusting device for ultrasonic processing apparatus - Google Patents

Abstract

An ultrasonic frequency adjusting device for an ultrasonic processing apparatus is provided. The ultrasonic frequency adjusting device includes a power, an ultrasonic control module and a processor. An ultrasonic processing unit of ultrasonic control module is configured to generate an ultrasonic based on a first power from the power and to apply the ultrasonic to a processing element. An ultrasonic frequency adjusting unit of the ultrasonic control module is configured to adjust an operating frequency of the ultrasonic. The processor is configured to determine that voltage and current of the first power has a characterized phase while the operating frequency is adjusted to a first frequency. The processor is further configured to control the ultrasonic frequency adjusting unit for adjusting the operating frequency of the ultrasonic to the first frequency.

Description

Ultrasonic frequency adjustment device for ultrasonic processing equipment

The present invention relates to an ultrasonic frequency adjusting device; more specifically, the present invention relates to an ultrasonic frequency adjusting device for ultrasonic processing appliances.

Traditional processing tools (such as milling machine processing tools, lathe processing tools) mainly use high-speed rotating tools to cut workpieces, and complete related workpiece processing through manual operations.

In order to further improve the accuracy of processing, ultrasonic-assisted processing technology has been developed. Specifically, ultrasonic-assisted machining mainly uses the high-frequency vibration characteristics of ultrasonic waves to apply it to the machining tools. In this way, the machining of the workpiece can be completed more efficiently and accurately, while reducing the cost of the tool. Attrition rate.

However, because different processing tools, workpieces and processing environments require different resonance frequencies, if a fixed single ultrasonic frequency is used for processing, the processing results will not be optimized.

In view of this, how to improve the shortcomings of conventional ultrasonic assisted processing is an urgent goal in the industry.

The main purpose of the present invention is to provide an ultrasonic frequency adjustment device for ultrasonic processing equipment, including a power supply, an ultrasonic control module and a processor. The ultrasonic control module is electrically connected to the power supply and the processor, and includes an ultrasonic processing unit and an ultrasonic frequency adjustment unit.

Specifically, the ultrasonic processing unit generates ultrasonic waves according to the first power provided by the power source, and applies the ultrasonic waves to the processing element. The ultrasonic frequency adjustment unit is used to adjust the operating frequency of the ultrasonic wave. The processor is used for judging that when the operating frequency of the ultrasonic wave is adjusted to the first frequency, the voltage and current of the first power have a characteristic phase; and controlling the ultrasonic frequency adjustment unit to adjust the operating frequency of the ultrasonic wave to the first frequency.

In addition, after referring to the drawings and the embodiments described later, those with ordinary knowledge in this technical field can understand the other objectives of the present invention, as well as the technical means and implementation aspects of the present invention.

The content of the present invention will be explained through the embodiments below. It should be noted that the embodiments of the present invention are not intended to limit the implementation of the present invention in any specific environment, application or special manner as described in the embodiments. Therefore, the description of the relevant embodiments is only for the purpose of explaining the present invention, not for limiting the present invention, and the scope of the application for the patent shall prevail. In addition, in the following embodiments and drawings, the components that are not directly related to the present invention have been omitted and are not shown, and the dimensional relationship between the components in the following drawings is only for easy understanding, not for limitation The actual ratio.

First, please refer to FIG. 1, which is a block diagram of an ultrasonic frequency adjusting device 1 according to the first embodiment of the present invention. The ultrasonic frequency adjustment device 1 includes a power supply 11, an ultrasonic control module 13 and a processor 15. The processor 15 is electrically connected to the ultrasonic control module 13, and the ultrasonic control module 13 includes an ultrasonic processing unit 131 and an ultrasonic frequency adjustment unit 133. The interaction between components will be further explained below.

Specifically, the ultrasonic processing unit 131 is used for generating an ultrasonic wave U11 according to a first power P11 provided by the power supply 11, and used for applying the ultrasonic wave U11 to a processing element 9 (for example, a processing tool). On the other hand, the ultrasonic frequency adjustment unit 133 is used to automatically adjust an operating frequency FRQ11 of the ultrasonic U11.

Then, when the ultrasonic frequency adjusting unit 133 automatically adjusts the operating frequency FRQ11 of the ultrasonic U11, the processor 15 can be used to determine the phase change of the voltage and current of the first power P11. In the first embodiment, when the processor 15 determines that the operating frequency FRQ11 of the ultrasonic wave U11 is adjusted to a first frequency, the voltage and current of the first power P11 have a characteristic phase (not shown).

Furthermore, when the voltage and current of the first power P11 have a characteristic phase, it means that the operating frequency FRQ11 of the ultrasonic wave U11 and the processing element 9 are in a resonance state. Therefore, the ultrasonic wave U11 is applied to the processing in the first frequency state. When the element 9 is used, the processing element 9 will have a better processing efficiency. Accordingly, the processor 15 controls the ultrasonic frequency adjustment unit 133 to adjust and lock the operating frequency FRQ11 of the ultrasonic U11 to the first frequency.

Please also refer to Figures 2A~2C. FIG. 2A is a schematic diagram of an ultrasonic frequency adjusting device 2 of the second embodiment of the present invention. Fig. 2B is a rear view of the ultrasonic frequency adjusting device 2 according to the second embodiment of the present invention. Fig. 2B is a block diagram of the ultrasonic frequency adjusting device 2 of the second embodiment of the present invention.

In detail, the ultrasonic frequency adjustment device 2 includes a power supply 21, an ultrasonic control module 22, a processor 23, a processing element driver 24, a voltage amplitude adjustment unit 25, and an input and output control interface 26. The ultrasonic control module 22 includes an ultrasonic processing unit 221 and an ultrasonic frequency adjustment unit 222. The components are electrically connected, and the interaction will be further described below.

In detail, the ultrasonic processing unit 221 is used to generate an ultrasonic wave U21 according to a first power P21 provided by the power supply 21, and to apply the ultrasonic wave U21 to a processing element 8 (for example, a processing tool). On the other hand, the ultrasonic frequency adjustment unit 222 is used to automatically adjust an operating frequency FRQ21 of the ultrasonic U21. In particular, in the second embodiment, the ultrasonic frequency adjustment unit 222 adjusts the operating frequency FRQ21 of the ultrasonic U21 within a frequency range. Preferably, the ultrasonic frequency adjustment unit 222 adjusts the operating frequency FRQ21 within a range of 20 kHz to 32 kHz.

Then, when the ultrasonic frequency adjusting unit 222 automatically adjusts the operating frequency FRQ21 of the ultrasonic U21, the processor 23 can be used to determine the phase change of the voltage and current of the first power P21. In the second embodiment, when the processor 23 determines that the operating frequency FRQ21 of the ultrasonic wave U21 is adjusted to a first frequency, the voltage and current of the first power P21 have a characteristic phase (not shown).

It should be particularly noted that in this embodiment, the aforementioned characteristic phase may be the phase with the highest voltage and current phase difference. In detail, when the ultrasonic frequency adjustment unit 222 adjusts the operating frequency FRQ21 of the ultrasonic U21 in the frequency range of 20kHz to 32kHz, it will record the phase difference between the voltage and current of the first power P21 at different frequencies and adjust it to the first At one frequency, the phase difference between the voltage and current of the first power P21 is the highest, and the processor 22 determines that when the operating frequency FRQ21 is adjusted to the first frequency, the voltage and current of the first power P21 have a characteristic phase.

Similarly, when the voltage and current of the first power P21 have a characteristic phase, it means that the operating frequency FRQ21 of the ultrasonic wave U21 and the processing element 8 are in resonance. Therefore, the ultrasonic wave U21 is applied to the processing element 8 in the first frequency state. At this time, the processing element 8 will have better processing efficiency. Accordingly, the processor 23 controls the ultrasonic frequency adjustment unit 222 to adjust and lock the operating frequency FRQ21 of the ultrasonic U21 to the first frequency.

Subsequently, when the processing element driver 24 provides a first power P21 according to the power supply 21 to drive the processing element 8 and apply the processing element 8 to a load (not shown) (for example, when a motor-driven tool is used for cutting an article), Due to the different types of processing elements 8 and loads, the resonance frequency will change. According to this, the ultrasonic frequency adjustment unit 222 will automatically adjust the operating frequency FRQ21 of the ultrasonic U21. At this time, the processor 23 tracks the phase change of the voltage and current of the first power P21.

In the second embodiment, while the processing element 8 is continuously applied to the load, the processor 23 determines that when the operating frequency of the ultrasonic wave U21 is automatically adjusted to a second frequency, the voltage and current of the first power P21 have a characteristic phase , Which means that the operating frequency FRQ21 of the ultrasonic U21 and the processing element 8 are in resonance when applied to the load.

Therefore, when the ultrasonic wave U21 is applied to the processing element 8 under the second frequency state and is applied to the load, the processing element 8 will have better processing efficiency. Accordingly, the processor 23 controls the ultrasonic frequency adjustment unit 222 to adjust the operating frequency FRQ21 of the ultrasonic U21 to the second frequency.

In more detail, it can be seen from the previous disclosure that when the phase of voltage and current is the characteristic phase, the phase difference between voltage and current has a specific value. Therefore, when the processing element 8 is continuously applied to the load, it may be Affect the resonance state between the operating frequency FRQ21 of the ultrasonic U21 and the processing element 8, causing the phase of voltage and current to change. At this time, the processor 23 will control the ultrasonic frequency adjustment unit 222 to adjust the operating frequency FRQ21 of the ultrasonic U21, and Track whether the phase difference between the voltage and current of the first power P21 meets a specific value.

In the second embodiment, the processor 23 tracks that when the operating frequency FRQ21 is the second frequency, the phase difference between the voltage and current of the first power P21 meets a specific value, that is, the phase of the voltage and current of the first power P21 coincides The characteristic phase controls the ultrasonic frequency adjustment unit 222 to adjust the operating frequency FRQ21 of the ultrasonic U21 to the second frequency. In this way, the operating frequency FRQ21 and the processing element can be maintained while the processing element 8 is continuously applied to the load. Resonance state between 8.

On the other hand, when the processing element driver 24 drives the processing element 8, the voltage amplitude adjustment unit 25 can adjust the voltage amplitude of a second power P22 (for example: ±10 volts to ±150 volts), thereby adjusting the processing element 8 The speed or fineness of processing. In particular, as shown in FIG. 2A, the voltage amplitude adjustment unit 25 can be operated through a knob.

In addition, in order to cooperate with the automatic operation of computer numerical control (Computer Numerical Control, CNC) machine tools, the input and output control interface 26 can be connected to the CNC machine tool. In this way, the user can issue related operating instructions through the CNC machine tool. After the input/output control interface 26 receives the operation signal, the ultrasonic frequency adjustment device 2 can perform the aforementioned related operations according to the type of the operation signal. It should be emphasized that in the second embodiment, the input/output control interface 26 is a PLC connector interface or an RS-485 interface, but it is not used to limit the implementation of the input/output control interface.

In summary, the ultrasonic frequency adjustment device of the present invention for ultrasonic processing equipment can first lock the corresponding ultrasonic operating frequency for the processing element, and then dynamically track the corresponding ultrasonic frequency according to the change caused by the load applied to the processing element Sonic operating frequency, in this way, can optimize the processing effect to improve the shortcomings of the prior art.

In addition, in particular, those skilled in the art can understand that the processor can be a central processing unit (Central Processing Unit) or a combination of related instruction execution circuits, and modules and units can be corresponding circuits and combinations thereof through the contents disclosed in the foregoing embodiments. But it is not used to limit the hardware implementation of the present invention.

However, the above-mentioned embodiments are only illustrative of the implementation of the present invention, as well as explaining the technical features of the present invention, and are not used to limit the protection scope of the present invention. Any change or equal arrangement that can be easily completed by a person familiar with this technique belongs to the scope of the present invention, and the scope of protection of the present invention shall be subject to the scope of the patent application.

1, 2‧‧‧Ultrasonic frequency adjustment device 11,21‧‧‧Power supply 13,22‧‧‧Ultrasonic control module 131,221‧‧‧Ultrasonic processing unit 133,222‧‧‧Ultrasonic frequency adjustment unit 15.23‧‧‧Processor 24‧‧‧Processing component driver 25‧‧‧Voltage amplitude adjustment unit 26‧‧‧Input and output control interface 8,9‧‧‧Processing component P11, P21‧‧‧First power P21‧ ‧‧Second power U11, U21‧‧‧Ultrasonic FRQ11, FRQ21‧‧‧Operating frequency

Fig. 1 is a block diagram of the ultrasonic frequency adjustment device of the first embodiment of the present invention; Fig. 2A is a schematic diagram of the ultrasonic frequency adjustment device of the second embodiment of the present invention; Fig. 2B is a second embodiment of the present invention The rear view of the ultrasonic frequency adjusting device; and Figure 2C is a block diagram of the ultrasonic frequency adjusting device of the second embodiment of the present invention.

1‧‧‧Ultrasonic frequency adjustment device

11‧‧‧Power

13‧‧‧Ultrasonic Control Module

131‧‧‧Ultrasonic processing unit

133‧‧‧Ultrasonic frequency adjustment unit

15‧‧‧Processor

9‧‧‧Processing components

P11‧‧‧First Power

U11‧‧‧Ultrasonic

FRQ11‧‧‧Operating frequency

Claims (6)

An ultrasonic frequency adjustment device for ultrasonic processing appliances, including: a power source for generating a first power; an ultrasonic control module, electrically connected to the power source, including: an ultrasonic processing unit, To receive the first power from the power source, generate an ultrasonic wave according to the first power provided by the power source, and apply the ultrasonic wave to a processing element; an ultrasonic frequency adjustment unit for adjusting the ultrasonic wave An operating frequency; a processor, electrically connected to the ultrasonic control module, for determining that when the operating frequency of the ultrasonic wave is adjusted to a first frequency, the voltage and current of the first power have a characteristic phase ; Control the ultrasonic frequency adjustment unit to adjust the operating frequency of the ultrasonic wave to the first frequency; a voltage amplitude adjustment unit, electrically connected to the power source, to adjust the voltage amplitude of a second power to adjust the One speed and one fineness of processing element. The ultrasonic frequency adjustment device according to claim 1, wherein when the processing element is applied to a load, the processor is further used to: determine when the operating frequency of the ultrasonic wave is adjusted to a second frequency, the first The voltage and current of an electric power have the characteristic phase; the ultrasonic frequency adjustment unit is controlled to adjust the operating frequency of the ultrasonic wave to the second frequency. The ultrasonic frequency adjustment device according to claim 1, further comprising: an input and output control interface for receiving an operation signal, wherein the operation The signal is used to operate the ultrasonic frequency adjustment device. The ultrasonic frequency adjustment device according to claim 3, wherein the input and output control interface is a PLC connector interface or an RS-485 interface. The ultrasonic frequency adjusting device according to claim 1, wherein the ultrasonic frequency adjusting unit adjusts the operating frequency of the ultrasonic wave within a frequency range. The ultrasonic frequency adjustment device according to claim 5, wherein the frequency range is from 20 kHz to 32 kHz.

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