阅读说明：本技术 用于超音波加工器具的超音波频率调整装置 (Ultrasonic frequency adjusting device for ultrasonic processing tool ) 是由 施俊名 于 2018-06-26 设计创作，主要内容包括：一种用于超音波加工器具的超音波频率调整装置,包括电源、超音波控制模块以及处理器。超音波控制模块的超音波加工单元根据电源提供的第一电力产生超音波,并将超音波施加至加工元件。超音波控制模块的超音波频率调整单元调整超音波的操作频率。处理器判断超音波的操作频率调整至第一频率时,第一电力的电压与电流具有特征相位,并控制超音波频率调整单元将超音波的操作频率调整至第一频率。(An ultrasonic frequency adjusting device for an ultrasonic processing device comprises a power supply, an ultrasonic control module and a processor. An ultrasonic processing unit of the ultrasonic control module generates ultrasonic waves according to first power provided by the power supply and applies the ultrasonic waves to the processing element. An ultrasonic frequency adjusting unit of the ultrasonic control module adjusts the operating frequency of the ultrasonic wave. When the processor determines that the operating frequency of the ultrasonic wave is adjusted to the first frequency, the voltage and the current of the first power have characteristic phases, and the processor controls the ultrasonic frequency adjusting unit to adjust the operating frequency of the ultrasonic wave to the first frequency.)

1. An ultrasonic frequency adjustment device for an ultrasonic machining tool, comprising:

a power source;

an ultrasonic control module electrically connected to the power source, comprising:

an ultrasonic processing unit for generating an ultrasonic wave based on a first power supplied from the power source and applying the ultrasonic wave to a processing element;

an ultrasonic frequency adjusting unit for adjusting an operating frequency of the ultrasonic wave;

a processor electrically connected to the ultrasonic control module for:

judging that the voltage and the current of the first power have a characteristic phase when the operating frequency of the ultrasonic wave is adjusted to a first frequency;

controlling the ultrasonic frequency adjusting unit to adjust the operating frequency of the ultrasonic wave to the first frequency.

2. The ultrasonic frequency adjustment device of claim 1, further comprising:

and the processing element driver is used for driving the processing element according to second electric power provided by the power supply.

3. The ultrasonic frequency adjustment device of claim 2, wherein the processor is further configured to, when the processing element is applied to a load:

judging that the voltage and the current of the first power have the characteristic phase when the operating frequency of the ultrasonic wave is adjusted to a second frequency;

controlling the ultrasonic frequency adjusting unit to adjust the operating frequency of the ultrasonic wave to the second frequency.

4. The ultrasonic frequency adjustment device of claim 2, further comprising:

a voltage amplitude adjustment unit electrically connected to the power supply for adjusting the voltage amplitude of the second power.

5. The ultrasonic frequency adjustment device of claim 2, further comprising:

an input/output control interface for receiving an operation signal, wherein the operation signal is used for operating the ultrasonic frequency adjustment device.

6. The apparatus of claim 5, wherein the input/output control interface is a PLC connector (PLC connector) interface or an RS-485 interface.

7. The apparatus of claim 1, wherein the ultrasonic frequency adjustment unit adjusts the operating frequency of the ultrasonic wave within a frequency range.

8. The apparatus of claim 7, wherein the frequency range is from 20kHz to 32 kHz.

Technical Field

The invention relates to an ultrasonic frequency adjusting device; more specifically, the present invention relates to an ultrasonic frequency adjustment device for an ultrasonic machining tool.

Background

The conventional machining tools (such as milling machine tools and lathe tools) mainly utilize a high-speed rotating tool to cut a workpiece, and related workpiece machining is completed in a manual operation mode.

In order to further improve the processing accuracy, ultrasonic assisted processing technology has been developed. Specifically, the ultrasonic-assisted machining mainly utilizes the high-frequency vibration characteristic of ultrasonic waves to apply the ultrasonic waves to a tool for machining, so that the machining of a workpiece can be completed more efficiently and accurately, and the wear rate of the tool is reduced.

However, since the resonant frequencies required for different machining tools, machining workpieces, and machining environments are different, the machining result cannot be optimized if a fixed single ultrasonic frequency is used for machining.

Accordingly, it is an urgent objective of the art to improve the above-mentioned shortcomings of the conventional ultrasonic-assisted machining.

Disclosure of Invention

The present invention provides an ultrasonic frequency adjusting device for an ultrasonic processing apparatus, which includes 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 comprises an ultrasonic processing unit and an ultrasonic frequency adjusting unit.

Specifically, the ultrasonic machining unit generates an ultrasonic wave based on a first power supplied from a power source and applies the ultrasonic wave to the machining element. The ultrasonic frequency adjusting unit is used for adjusting the operating frequency of the ultrasonic wave. The processor is used for: judging that the voltage and the current of the first power have characteristic phases when the operating frequency of the ultrasonic wave is adjusted to a first frequency; controlling the ultrasonic frequency adjusting unit to adjust the operating frequency of the ultrasonic wave to a first frequency.

The ultrasonic frequency adjustment device further comprises: and the processing element driver is used for driving the processing element according to second electric power provided by the power supply.

Wherein, when the processing element is applied to a load, the processor is further configured to:

judging that the voltage and the current of the first power have the characteristic phase when the operating frequency of the ultrasonic wave is adjusted to a second frequency;

controlling the ultrasonic frequency adjusting unit to adjust the operating frequency of the ultrasonic wave to the second frequency.

The ultrasonic frequency adjustment device further comprises: a voltage amplitude adjustment unit electrically connected to the power supply for adjusting the voltage amplitude of the second power.

The ultrasonic frequency adjusting device further comprises: an input/output control interface for receiving an operation signal, wherein the operation signal is used for operating the ultrasonic frequency adjustment device.

Wherein, the input/output control interface is a PLC connector (PLC connector) interface or an RS-485 interface.

Wherein, the ultrasonic frequency adjusting unit adjusts the operating frequency of the ultrasonic wave within a frequency range.

Wherein the frequency range is between 20kHz and 32 kHz.

In addition, other objects, technical means and embodiments of the present invention can be understood by those skilled in the art after referring to the drawings and the embodiments described later.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a block diagram of an ultrasonic frequency adjustment apparatus according to a first embodiment of the present invention;

FIG. 2A is a schematic view of an ultrasonic frequency adjustment apparatus according to a second embodiment of the present invention;

FIG. 2B is a rear view of an ultrasonic frequency adjustment device according to a second embodiment of the present invention; and

fig. 2C is a block diagram of an ultrasonic frequency adjustment apparatus according to a second embodiment of the present invention.

Description of the reference numerals

1. 2 ultrasonic frequency adjusting device

11. 21 power supply

13. 22 ultrasonic wave control module

131. 221 ultrasonic processing unit

133. 222 ultrasonic frequency adjusting unit

15. 23 processor

24 processing element driver

25 voltage amplitude adjusting unit

26 input/output control interface

8. 9 machining element

P11, P21 first power

P21 second electric power

U11, U21 ultrasonic wave

FRQ11, FRQ21 operating frequency.

Detailed Description

The following will explain the contents of the present invention by way of embodiments. It should be noted that the embodiments of the present invention are not intended to limit the invention to any particular environment, application, or particular implementation as described in the embodiments. Therefore, the description of the embodiments is for illustrative purposes only and is not intended to limit the scope of the present invention, which is defined by the following claims. In addition, in the following embodiments and the accompanying drawings, elements not directly related to the present invention have been omitted and not shown, and the dimensional relationship between the elements in the following drawings is only for easy understanding and is not intended to limit the actual scale.

Referring to fig. 1, a block diagram of an ultrasonic frequency adjustment apparatus 1 according to a first embodiment of the invention is shown. The ultrasonic frequency adjustment device 1 includes a power source 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 adjusting unit 133. The interaction between the elements will be further described below.

Specifically, the ultrasonic processing unit 131 is configured to generate an ultrasonic wave U11 according to a first power P11 provided by the power source 11, and to apply the ultrasonic wave U11 to a processing element 9 (e.g., a processing tool). On the other hand, the ultrasonic frequency adjustment unit 133 is used to automatically adjust an operation frequency FRQ11 of the ultrasonic wave U11.

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

More specifically, when the voltage and the current of the first power P11 have characteristic phases, which indicate that the operation frequency FRQ11 of the ultrasonic wave U11 is in a resonance state with the processing device 9, the ultrasonic wave U11 is applied to the processing device 9 under the first frequency state, so that the processing device 9 has better processing efficiency. Accordingly, the processor 15 controls the ultrasonic frequency adjustment unit 133 to adjust and lock the operation frequency FRQ11 of the ultrasonic wave U11 to the first frequency.

Please refer to fig. 2A ~ 2C, fig. 2A is a schematic diagram of an ultrasonic frequency adjustment apparatus 2 according to a second embodiment of the present invention, fig. 2B is a rear view of the ultrasonic frequency adjustment apparatus 2 according to the second embodiment of the present invention, and fig. 2C is a block diagram of the ultrasonic frequency adjustment apparatus 2 according to the second embodiment of the present invention.

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

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

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

It should be noted that, in the present embodiment, the characteristic phase may be the phase having the highest voltage and current phase difference. Specifically, when the ultrasonic frequency adjustment unit 222 adjusts the operation frequency FRQ21 of the ultrasonic wave U21 in the frequency range of 20kHz to 32kHz, the phase difference between the voltage and the current of the first electric power P21 at different frequencies is recorded, and when the phase difference between the voltage and the current of the first electric power P21 is the highest when the operation frequency FRQ21 is adjusted to the first frequency, the processor 22 determines that the voltage and the current of the first electric power P21 have the characteristic phase when the operation frequency FRQ21 is adjusted to the first frequency.

Similarly, when the voltage and the current of the first power P21 have characteristic phases, which indicate that the operation frequency FRQ21 of the ultrasonic wave U21 is in a resonance state with the processing device 8, the ultrasonic wave U21 applied to the processing device 8 in the first frequency state will make the processing device 8 have a better processing effect. Accordingly, the processor 23 controls the ultrasonic frequency adjustment unit 222 to adjust and lock the operation frequency FRQ21 of the ultrasonic wave U21 to the first frequency.

Subsequently, when the processing device driver 24 drives the processing device 8 according to a second power P22 provided by the power source 21 and applies the processing device 8 to a load (not shown) (e.g., when a motor-driven tool is applied to cut an article), the resonant frequency changes due to the difference between the processing device 8 and the load, and thus the ultrasonic frequency adjustment unit 222 automatically adjusts the operation frequency FRQ21 of the ultrasonic wave U21. At this time, the processor 23 tracks the phase change of the voltage and the 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 the voltage and the current of the first power P21 have characteristic phases when the operation frequency of the ultrasonic wave U21 is automatically adjusted to a second frequency, which means that the operation frequency FRQ21 of the ultrasonic wave U21 and the processing element 8 are in a resonance state when applied to the load.

Therefore, when the ultrasonic wave U21 is applied to the processing element 8 in the second frequency state and applied to the load, the processing element 8 has a better processing effect. Therefore, the processor 23 controls the ultrasonic frequency adjustment unit 222 to adjust the operation frequency FRQ21 of the ultrasonic wave U21 to the second frequency.

More specifically, as can be seen from the above description, when the phase of the voltage and the current is the characteristic phase, the phase difference between the voltage and the current has a specific value, so that, when the processing element 8 is continuously applied to the load, the phase of the voltage and the current changes due to the resonance state between the processing element 8 and the operating frequency FRQ21 of the ultrasonic wave U21, and the processor 23 controls the ultrasonic frequency adjustment unit 222 to adjust the operating frequency FRQ21 of the ultrasonic wave U21, and tracks whether the phase difference between the voltage and the current of the first power P21 meets the specific value.

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

On the other hand, during the process of driving the processing element 8 by the processing element driver 24, the voltage amplitude of a second power P22 (e.g., ± 10 volts to ± 150 volts) can be adjusted by the voltage amplitude adjustment unit 25, so as to adjust the processing speed or fineness of the processing element 8. Specifically, as shown in fig. 2A, the voltage amplitude adjustment unit 25 can be operated by a knob.

In addition, in order to cooperate with the automatic operation of a Computer Numerical Control (CNC) machine tool, the input/output Control interface 26 can be connected to the CNC machine tool, so that a user can issue related operation commands through the CNC machine tool, and after the input/output Control interface 26 receives operation signals, the ultrasonic frequency adjustment device 2 can perform the related operations according to the types of the operation signals. It should be emphasized that, in the second embodiment, the input/output control interface 26 is a PLC connector (PLC connector) interface or an RS-485 interface, but it is not limited to the embodiment of the input/output control interface.

In summary, the ultrasonic frequency adjusting device for an ultrasonic processing apparatus according to the present invention can lock the corresponding ultrasonic operating frequency for the processing element, and then dynamically track the corresponding ultrasonic operating frequency according to the change caused by the load applied to the processing element, so as to optimize the processing effect and improve the disadvantages of the prior art.

Further, it is understood by those skilled in the art that the foregoing embodiments can be combined into a Central Processing Unit (Central Processing Unit) or a related instruction execution circuit, and the modules and units can be corresponding circuits and combinations thereof. It is not intended to limit the hardware implementation of the present invention.

However, the above examples are only for illustrating the embodiments of the present invention and illustrating the technical features of the present invention, and are not intended to limit the scope of the present invention. Any arrangement which can be easily changed or equalized by a person skilled in the art is included in the scope of the present invention, and the scope of protection of the present invention is subject to the content of the claims.