A system for providing power to more than one ultrasonic welding probe from M power supplies includes N multipoint units and a base. Each of the N multipoint units includes: a housing, a plurality of analog or digital inputs configured to carry distance information regarding probe distance of a plurality of ultrasonic welding probes, a dedicated high voltage input connector connectable via a high voltage cable to a dedicated high voltage output connector of one of the M power supplies, and a microcontroller. The microcontroller is configured to: direct power from the dedicated high voltage input connector to a corresponding one of the plurality of ultrasonic welding probes, and sample the distance information of the plurality of ultrasonic welding probes at a rate of at least once per millisecond. The base houses the M power supplies, wherein M and N are both integers greater than or equal to 1.

An ultrasonic processing system (1) which comprises an ultrasonic vibrator (10) having an ultrasonic sonotrode (30) and a working surface (31) for ultrasonic processing of a workpiece. The vibrator (10) comprises a longitudinal axis (L), an enclosed cavity (32, 51) extends along the longitudinal axis at least in the sonotrode (30), a medium inlet (52) through which a cooling medium is fed into the cavity (32, 51), at least one vortex generator (53) which arranged between the medium inlet (52) and the cavity (32, 51) such that a swirl motion of the medium is generated inside the cavity (32, 51) around the longitudinal axis. A cooling channel (34) is fluidly connected to the enclosed cavity (32, 51) to guide the medium in the vicinity of the working surface (31) such that the working surface (31) is cooled. A first medium outlet (33) is fluidly connected to the cooling channel (34).

The present invention relates to an ultrasonic machine tool comprising a first sonotrode (2) with a first resonant frequency f.sub.1, a first converter (4) which is connected to the first sonotrode (2), and a generator (1) with a generator output for generating a first electrical alternating voltage with the first frequency f.sub.1 and for outputting the first electrical alternating voltage at the generator output, the generator output being connected to the first converter (4). According to the invention, a second sonotrode (3) with a second resonant frequency h and a second converter (5) which is connected to the second sonotrode (3) are provided, wherein the generator output is connected to the second converter (5) and the generator (1) is designed to produce a mix signal which has the first electrical alternating voltage and a second electrical alternating voltage with the second frequency h, and to output the mix signal at the generator output, and wherein the first frequency f.sub.1 and the second frequency f.sub.2 differ from one another.

The present invention concerns an ultrasonic welding installation comprising an ultrasonic vibration unit having a sonotrode and a converter, wherein the sonotrode and the converter are arranged in mutually adjacent relationship along a longitudinal axis and the ultrasonic vibration unit can be caused to resonate with an ultrasonic vibration in the direction of the longitudinal axis with a wavelength ?/2, wherein there is provided a holder for holding the ultrasonic vibration unit. To provide an ultrasonic welding installation which allows simple and quick highly precise adjustment of the sealing surfaces of the sonotrode relative to the anvil it is proposed according to the invention that the holder has an angle positioning device, wherein the angle positioning device and the ultrasonic vibration unit are of such a configuration that they can be connected together in positively locking relationship so that a rotation of the ultrasonic vibration unit about the longitudinal axis is prevented by the positively locking connection and a relative movement between the ultrasonic vibration unit and the holder in the direction of the longitudinal axis is not prevented.

A mechanical vibration machining apparatus or the like is suitable for forming a stable machined surface. A mechanical vibration machining apparatus performs machining of a machining target using a horn. A control unit instructs the horn to perform a mechanical vibration operation and a rotational driving operation. The control unit controls the mechanical vibration and/or the rotational driving in a periodic manner. For example, the control unit supports intermittent alternating control. That is to say, when one from among the mechanical vibration and the rotational driving is provided, the other is suspended. Such periodic control allows the stress that occurs due to the applied force to be dispersed, thereby allowing a stable machined surface to be formed.

A control device for reducing and homogenizing welding residual stress by acoustic waves, comprising: a fixing tool having two rows of through holes; a plurality of ultrasonic transducers each having a body and a conical horn transmitting portion at a lower end of the body, wherein lower ends of the horn transmitting portions are fixedly connected with flanges, the horn transmitting portions of the ultrasonic transducers extend into respective through holes of the fixing tool to be in contact with welded parts below the fixing tool, the flanges are fixed to the fixing tool by bolts, and the two rows of through holes are arranged both sides of a welding seam of the welded parts; and a driving device for driving the ultrasonic transducers to operate. A corresponding control method is also provided. The control device can be used to control residual stress at the welding seam of steels.

Ultrasonic stack contact with an object is detected upon the determination that the frequency of the ultrasonic stack has changed from the frequency of that ultrasonic stack operating near resonance in air.

A method for calibrating a wire clamp device includes: preparing a wire clamp device provided with a pair of arm parts having tips for clamping a wire, the arms extending from the tips toward base ends, and a drive part provided with a piezoelectric element for drive, connected to the base ends of the pair of arm parts and opening/closing the tips of the pair of arm parts; a step of detecting, by electrical continuity between the tips, a timing at which the pair of arm parts enters a closed state when the piezoelectric element for drive is driven, and acquiring a reference voltage; and a step of calibrating, on the basis of the reference voltage, an application voltage to be applied to the piezoelectric element for drive. Thus, it is possible to perform accurate and stable wire bonding.

The present invention concerns an ultrasonic vibration system comprising a sonotrode which has two sonotrode end faces and a circumferentially extending lateral surface connecting the two sonotrode end faces together, wherein the sonotrode has an elongate core element and at least one wing element, wherein core element and wing element respectively extend from the one sonotrode end face to the other sonotrode end face in a longitudinal direction, wherein the wing element has a sealing surface which is provided to come into contact with a material for processing thereof and is connected to the core element by way of a plurality of webs spaced from each other in the longitudinal direction of the core element, and a converter which is optionally connected to the sonotrode by way of an amplitude transformer. According to the invention it is proposed that the ultrasonic vibration system is connected to a machine stand by way of a mounting connected to the lateral surface.

The present invention relates to an ultrasonic vibration system (1) comprising a sonotrode which has two sonotrode end faces (8, 8) and a circumferential lateral surface that connects said sonotrode end faces (8, 8) with each other. The sonotrode has an elongate core element (2) and at least one wing element (3, 4), each core element (2) and wing element (3, 4) longitudinally extending from the one sonotrode end face (8) to the other sonotrode end face (8). The wing element (3, 4) has a sealing surface (7) which is designed to be in contact with a material for the purpose of processing same and which is connected to the core element (2) via a plurality of longitudinally interspaced connecting portions (5, 6). The ultrasonic vibration system further comprises a converter (9) which is optionally connected to the sonotrode via an amplitude transformer (11). According to the invention, the converter (9) or the amplitude transformer (11) is connected to the lateral surface of the sonotrode