Korea Institute of Science and Technology

Hesse & Knipps Gmbh

Kaunas University of Technology

Hesse Gmbh

Vilniaus Gedimino Technikos Universitetas

Vytauto Didziojo Universitetas

Piotr Vasiljev

Seok Jin Yoon

Hyun Jai Kim

Ji Won Choi

Chong Yun Kang

Hans-Juergen Hesse

Joerg Wallaschek

Hyung Jin Jung

Michael Broekelmann

Jörg Wallaschek

Hans Hesse

Vytautas Jurenas

Dae Yong Jeong

Dong Kyun Lee

Sergejus Borodinas

Arunas Struckas

Dalius Mazeika

Regimantas Bareikis

Andrius Ceponis

Vytautas Ostasevicius

Genadijus Kulvietis

Michael BRÖKELMANN

Hans-Jürgen Hesse

A bonding device, particularly for producing bond connections between electrical conductors made of wire material or strip material and contact points of substrates such as electrical circuits, wherein the bonding device comprises a bonding head () which can be rotated about a geometric axis of rotation (D), in particular a vertical axis, and on which a bonding tool () and an ultrasonic transducer () are disposed for ultrasonic vibration excitation of the bonding tool (). It is proposed that the main direction of extension () of the ultrasonic transducer () and/or the direction of extension thereof in the direction of the axis of the minimum moment of inertia extends parallel to the geometric axis of rotation (D) of the bonding head (). The invention further relates to a bonding device or an ultrasonic transducer.

Bonding device, ultrasonic transducer, and bonding method

The present invention relates to a piezoelectric linear motor that can make relatively low abrasion and accurate linear movement since stationary AC voltages are applied to two piezoelectric elements with a phase difference. The present invention provides a piezoelectric linear motor, comprising: a piezoelectric substrate having a first piezoelectric element and a second piezoelectric element, wherein AC voltages are applied to the first and second piezoelectric elements with a phase difference; a metallic elastic body having first and second elastic bodies coupled to the piezoelectric elements and a central protrusion protruded at the central portion connecting the first and second elastic bodies, wherein the central protrusion oscillates elliptically during an application of the voltage; and a mover brought into contact with the central protrusion of the metallic elastic body for a linear movement, and wherein the movement of the mover is orthogonal to the central protrusion.

Piezo electric linear motor

The invention relates to an ultrasonic transducer comprising at least one sensor, particularly for use in ultrasonic bonders. At least one sensor () is arranged in/on a mounting () of the ultrasonic transducer and, in particular, by means of which a transverse extension perpendicular to a propagating exciting ultrasonic wave can be metrologically detected.

Ultrasonic transducer comprising a sensor disposed in the mounting

An ultrasonic transducer having an ultrasonic conducting element with a plurality of arms extending from a common junction with some of the arms being provided with ultrasonic generators, at least one other arm carrying a bonding tool, especially for bonding a conductor to a chip and at least two of the arms including a straight angle of 180&#xb0; with one another.

Cruciform ultrasonic transducer

The present invention relates to a linear motor which draws its operating power from ultrasonic vibration above the frequency of 20 kHz which is generated by piezoelectric ceramic. More particularly, the invention relates to a linear piezoelectric ultrasonic motor which linearly operates a slider due to a frictional force generated by applying sinusoidal electric field with a 90 degree phase difference to a pair of piezoelectric ceramic. This causes an elliptical mechanical vibration on a shaking beam which is connected to the piezoelectric ceramic.

Linear piezoelectric ultrasonic motor

The present invention relates to a ring-type piezoelectric ultrasonic motor that is different from the electro-magnetically driven conventional motors and that has applications in robots and automation equipments. More specifically, the present invention relates to a ring-type piezoelectric ultrasonic motor that is driven by a frictional force between rotor and stator, and stator is produced a mechanical displacement by a piezoelectric ceramics applying an alternate electric field with an ultrasonic frequency (above kHz).

Ring-type piezoelectric ultrasonic motor

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Vilnius, Lithuania

Piotr Vasiljev