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.

Peripheral surfaces of holes formed are fixed in place and processed sheet is obtained in a state where the hole pattern is formed accurately. The apparatus is provided with a die on a surface of which are formed projecting parts corresponding to a hole pattern to be added to a processed sheet, an ultrasonic horn provided facing the die and outputting an ultrasonic wave toward a surface of the die, and a conveyor mechanism superposing over the processed sheet a resin sheet for melt bonding with and recovering pieces of the processed sheet punched out from the holes, passing the sheets between the die and the ultrasonic horn, and separating the resin sheet and the processed sheet after passage.

Provided is an automated method for trimming a multi-ply structure having at least a first ply and a second ply, where the method includes applying the first ply over a platen, positioning a cutting board over a protected portion of the first ply, applying the second ply over the platen such that the cutting board is between the protected portion of the first ply and a superjacent portion of the second ply, and cutting the superjacent portion of the second ply.

Methods of ultrasonic drilling may be used to form perforated sheets by forming holes through a workpiece using a needle or needle array operatively coupled to an ultrasonic actuator. The needle is brought to repeatedly contact the surface of the workpiece at an ultrasonic operating frequency, thereby forming the hole through the workpiece. Such steps are repeated to form a plurality of holes in the workpiece, thereby forming a perforated sheet which may be used in an acoustic liner for noise attenuation. The workpiece may be heated while the holes are formed, via a remote heating unit that locally heats a portion of the workpiece.

The present invention concerns a method of cutting a rubber web by means of ultrasound, in which a sonotrode comes into contact with the rubber web and the rubber web and the sonotrode are moved relative to each other while the sonotrode is excited with an ultrasonic vibration. To provide a method of the kind set forth in the opening part of this specification which allows reliable cutting of a rubber web and at the same time ensures that the wear of the tool and the converter is markedly reduced according to the invention it is proposed that a sonotrode comprising steel, preferably hardened steel, is used.

The invention relates to a ultrasonic cutter for the cutting of edge chamfers of plate-shaped workpieces, having a cutter head (1) which forms an axis of rotation (6) and having a blade (2), which extends from the cutter head (1) and forms a cutting wedge, terminating in a straight cutting edge (5), between flank and contact faces (3, 4) determined by the wedge angle. In order to create advantageous structural conditions, it is proposed that the axis of rotation (6) extending on the blade side of the flank face (3) is at a distance (e) from the flank face (3) which is equal to or greater than the distance (s) of the centre of mass (S) of the blade (2) from the flank face (3), and that the cutting edge (5) extending in the direction of the axis of rotation (6) extends at a distance (a) from the axis of rotation (6) which corresponds at most to the blade thickness (d).

Systems and methods are described for controlled crack propagation in a material using ultrasonic waves. A first stress in applied to the material such that the first stress is below a critical point of the material and is insufficient to initiate cracking of the material. A controlled ultrasound wave is then applied to the material causing the total stress applied at a crack tip in the material to exceed the critical point. In some implementations, the controlled cracking is used for wafering of a material.

A method for determining a dimension between the back and the cutting edge of a vibrating blade mounted on a cutting head includes successively of acquiring a digital image of the blade mounted on the cutting tool so a line corresponding to a cutting edge of the blade and a line corresponding to a back of the blade are visible in the image, determining on the digital image along a straight line perpendicular to the line corresponding to the cutting edge of the blade the pixels comprised between the line corresponding to the cutting edge of the blade and the line corresponding to the back of the blade, and calculating a filtered dimension between the back and the cutting edge of the blade from the number of pixels comprised between the line corresponding to the cutting edge of the blade and the line corresponding to the back of the blade.

Systems and methods utilizing stationary and/or moveable cutting components provide limited interference with web processing operations, such as pad spin and pitch alteration. Heat, laser, fluid, or mechanical cutting operations may be used, including respectively, a heated element (e.g., wire, ribbon, bar, or embossing or perforating element) that may be triggered inductively, water or steam jets, or improved knife/anvil cooperation.

A method for forming pieces of food dough and an apparatus thereof is able to cut the food dough continuously extruded through a nozzle along the shape of the hole of the nozzle without causing deformation, and to locate pieces of the food dough on a conveyor without causing deformation. The apparatus for forming pieces of food dough comprises an extruding device and a cutting device, wherein the extruding device comprises a nozzle to continuously extrude food dough downward, and the cutting device comprises a cutting blade to cut the food dough into the pieces of food dough, a moving mechanism to move the cutting blade forward from an initial position, then to move the cutting blade downward, and then to return the cutting blade to the initial position, and a carrying-out conveyor, which is disposed below the nozzle and moves in the direction that the cutting blade moves forward.