Abstract: An ultrasonic welding device comprises a sonotrode and a sonotrode carrier which is formed to cause ultrasonic vibrations of the sonotrode. The sonotrode and the sonotrode carrier have in each case a contact face, wherein at least one of the contact faces is roughened at least in sections. The sonotrode is fastened exchangeably to the sonotrode carrier in such a manner that the contact faces are pushed against one another.

Abstract: An ultrasonic generator and a method for controlling an oscillator unit (13) of the ultrasonic generator (10) in a machine tool for generation of ultrasound to excite a tool (26). A control variable for controlling a frequency f of an electrical control signal HFS generated by the oscillator unit (13) is determined depending on an analysis of the size of an input and/or output current I or of an input and/or output power P of the ultrasonic generator (10).

Abstract: An ultrasonic welding device comprises a sonotrode and a sonotrode carrier which is formed to cause ultrasonic vibrations of the sonotrode. The sonotrode and the sonotrode carrier have in each case a contact face, wherein at least one of the contact faces is roughened at least in sections. The sonotrode is fastened exchangeably to the sonotrode carrier in such a manner that the contact faces are pushed against one another.

Abstract: The disclosure relates to a method for producing a welded assembly including a plurality of welded connections between first contact partners of a contact substrate and second contact partners of a placement unit. The contact partners are arranged in an overlapping position and a sonotrode is moved into a position overlapping with the second contact partner using a positioning device, is lowered onto the second contact partner in a welding contact position, and is subjected to ultrasonic vibrations to produce a welded connection. The sonotrode is positioned relative to the second contact partner with a camera and the sonotrode is positioned relative to the second contact partner based on a determination of a position deviation of a sonotrode imprint of a sonotrode working surface produced on a reference imprint carrier by the welding process.

Abstract: The disclosure relates to a method for producing a welded assembly including a plurality of welded connections between first contact partners of a contact substrate and second contact partners of a placement unit. The contact partners are arranged in an overlapping position and a sonotrode is moved into a position overlapping with the second contact partner using a positioning device, is lowered onto the second contact partner in a welding contact position, and is subjected to ultrasonic vibrations to produce a welded connection. The sonotrode is positioned relative to the second contact partner with a camera and the sonotrode is positioned relative to the second contact partner based on a determination of a position deviation of a sonotrode imprint of a sonotrode working surface produced on a reference imprint carrier by the welding process.