阅读说明：本技术 包括两个超声波探头的超声波机床及其运行方法 (Ultrasonic machine tool comprising two ultrasonic probes and method for operating the same ) 是由 G·格内德 于 2018-03-28 设计创作，主要内容包括：本发明涉及一种超声波机床,该超声波机床包括具有第一谐振频率f<Sub>1</Sub>的第一超声波探头(2),被连接到所述第一超声波探头(2)的第一转换器(4),以及具有发电机输出端的发电机(1),该发电机用于生成具有第一频率f<Sub>1</Sub>的第一交流电压,以及用于在发电机输出端处输出该第一交流电压,其中该发电机输出端被连接到第一转换器(4)。根据本发明,提供了具有第二谐振频率h的第二超声波探头(3)和连接到该第二超声波探头(3)的第二转换器(5),其中,发电机输出端被连接到第二转换器(5),并且发电机(1)被设计用于产生具有第一电交流电压和具有第二频率h的第二电交流电压的混合信号,并在发电机输出端处输出该混合信号,并且其中第一频率f<Sub>1</Sub>和第二频率f<Sub>2</Sub>彼此不同。(The invention relates to an ultrasonic machine tool comprising a first ultrasonic probe (2) having a first resonance frequency f1, a first converter (4) connected to the first ultrasonic probe (2), and a generator (1) having a generator output for generating a first alternating voltage having a first frequency f1 and for outputting the first alternating voltage at the generator output, wherein the generator output is connected to the first converter (4). According to the invention, a second ultrasonic probe (3) having a second resonance frequency h and a second converter (5) connected to the second ultrasonic probe (3) are provided, wherein the generator output is connected to the second converter (5) and the generator (1) is designed to generate a mixed signal having a first electrical alternating voltage and a second electrical alternating voltage having the second frequency h and to output the mixed signal at the generator output, and wherein the first frequency f1 and the second frequency f2 differ from one another.)

1. An ultrasonic machine tool comprising a first ultrasonic probe (2) having a first resonance frequency f1, a first converter (4) connected to the first ultrasonic probe (2), and a generator (1) having a generator output, the generator (1) being for generating a first alternating voltage having the first frequency f1 or substantially the first frequency f1 and for outputting the first alternating voltage at the generator output, wherein the generator output is connected to the first converter (4), characterized in that a second ultrasonic probe (3) having a second resonance frequency f2 and a second converter (5) connected to the second ultrasonic probe (3) are provided, wherein the generator output is connected to the second converter (5), and the generator (1) is formed to generate a mixed signal having the first alternating voltage and a second alternating voltage and to emit at the generator output Outputting the mixed signal at the motor output, the second alternating voltage having a second frequency f2 or substantially having a second frequency f 2; and wherein the first frequency f1 and the second frequency f2 are different from each other.

2. an ultrasonic machine tool according to claim 1, characterized in that the difference between the first frequency f1 and the second frequency f2 is greater than 300Hz, preferably greater than 500Hz, and ideally greater than 1000 Hz.

3. An ultrasonic machine tool according to claim 1 or 2, characterized in that a first current meter is provided for measuring the current flowing through the first transducer (4) and a second current meter is provided for measuring the current flowing through the second transducer (5).

4. an ultrasonic machine tool according to claim 3, characterized in that a first controller is provided, which determines an actual vibration amplitude of the first ultrasonic probe (2) on the basis of the current flowing through the first converter (4) and changes the amplitude of the first alternating voltage in case of a difference between the determined actual vibration amplitude and a predetermined target vibration amplitude, wherein a second controller is preferably provided, which determines an actual vibration amplitude of the second ultrasonic probe (3) on the basis of the current flowing through the second converter (5) and changes the amplitude of the second alternating voltage in case of a difference between the determined actual vibration amplitude and a predetermined target vibration amplitude.

5. A method for simultaneously operating a first ultrasonic vibration unit having a resonance frequency f1 composed of a first transducer (4) and a first ultrasonic probe (2) and a second ultrasonic vibration unit having a resonance frequency f2 composed of a second transducer (3) and a second ultrasonic probe (5), characterized by comprising the steps of:

a) providing the first and second ultrasonic vibration units,

b) Providing a generator (1) having a generator output,

c) Connecting the generator output to a signal input of the first converter (4) and a signal input of the second converter (5),

d) Generating a mixed signal consisting of a first alternating voltage having the first frequency f1 or substantially having the first frequency f1 and a second alternating voltage having the second frequency f2 or substantially having the second frequency f2,

e) Outputting the mixed signal at the generator output.

6. the method according to claim 5, wherein the second resonance frequency f2 is selected to be at least 1% greater, preferably at least 2% greater, than the first resonance frequency f 1.

7. The method of claim 5 or 6, wherein the mixed signal is a sum of the first alternating voltage and the second alternating voltage.

8. method according to claim 7, characterized in that the current I1 through the first converter (4) and/or the current I2 through the second converter (5) is measured.

9. The method as claimed in claim 8, characterized in that the actual vibration amplitude of the first ultrasound probe (2) is calculated from the current I1 flowing through the first converter (4) and the amplitude U1 of the first alternating voltage, wherein preferably the actual vibration amplitude of the second ultrasound probe (2) is also calculated from the current I2 flowing through the first converter (4) and the amplitude U2 of the first alternating voltage.

10. The method as claimed in claim 9, characterized in that the vibration amplitude of the first ultrasonic probe (2) is controlled, wherein a first amplitude U1 of the first alternating voltage is used as a control variable, wherein the vibration amplitude of the second ultrasonic probe (3) is also preferably controlled, wherein the second amplitude U2 of the second alternating voltage is used as a control variable.