A sound reduction device for use in a mechanical machining method or a joining method, in particular a pulse-type joining method. The sound reduction device comprises a clamping device by means of which at least one part to be machined can be clamped at a plurality of clamping locations, as well as a plurality of engagement components which engage the part surface at a number of engagement points, in order to damp vibrations of the part. The present disclosure also describes a joining method and a machining method in combination with the sound reduction device.

A machining support configured to reduce spring back of a sheet following a machining operation on the sheet is presented. The machining support comprises a porous material with a plurality of surfaces including a support surface having a contour configured to contact and support the sheet; sealing material covering each of the plurality of surfaces except the support surface; and a vacuum port configured to provide a vacuum to the porous material.

Apparatus (101) for supporting a workpiece (201), comprising a frame structure (102) for holding a workpiece (201), a base element (103) for supporting the frame structure (102), and a tool support element (110) for holding a tool. The frame structure (102) comprises lower and upper frame elements (107, 108) between which a workpiece (201) is receivable, and the upper frame element (108) is movable with respect to the lower frame element (107) in a Z-axis direction (106), for clamping a workpiece (102) therebetween. The tool support element (110) is movable with respect to the upper frame element (108) in an X-axis direction (104). The frame structure (102) is movable with respect to the base element (103), and with respect to a workpiece held between the lower and upper frame elements (107, 108), in a Y-axis direction (105). A CNC machine comprising the apparatus (101).

A supporting device and method for a large thin-walled part is disclosed. The supporting device comprises a processing device and a supporting device. A workpiece is positioned between the processing device and the supporting device and is clamped at a periphery in a flexible clamping mode. A cutter in the processing device is connected with an iron core. A coil is wound on the iron core. When the coil is energized, a magnetic field is generated around the coil. A blade part of the cutter is in contact with a processing side of the workpiece. The supporting method combines the magnetorheological fluid technology with the jet supporting technology, and uses a jet impact force to offset part of a milling force. The current magnitude and winding mode of the coil are changed to control magnetic field intensity. The magnetorheological fluid is cured instantly to support the workpiece.

A freezing support device and method for a large thin-walled part, which belongs to the technical field of machining support. The present invention realizes freezing support for a large thin-walled part by a freezing system and an auxiliary system, wherein the freezing system comprises a heating source, a freezing source, flexible films, support plates, etc., and the auxiliary system comprises a rotating device, a moving plate and guide rails. The present invention utilizes ice with a certain thickness formed on a support side of a machining area and supports a workpiece through the ice, and the ice is always used as a support along with the progress of machining to have an effect of follow-up support. The present invention simplifies a support structure, and has the advantages of low cost, no contamination to a machine tool, and convenient use; plays a function of clamping the workpiece.

A sealing strip holder for manipulating and transporting a sealing strip preform in an at least partially automated production process, the sealing strip preform preferably having limp properties. To make the manufacturing process faster and less expensive the sealing strip holder comprises at least one clamping jaw which interlockingly and/or frictionally engages at least one surface portion of the sealing strip preform.

A manufacturing machine is capable of subtractive manufacturing and additive manufacturing for a workpiece. The manufacturing machine includes: a first headstock and a second headstock disposed in a machining area and configured to hold a workpiece; a tool spindle and a lower tool rest disposed in the machining area and configured to hold a tool to be used for subtractive manufacturing for the workpiece; an additive manufacturing head configured to discharge a material during additive manufacturing for the workpiece; a workpiece gripper configured to grip the workpiece during transportation of the workpiece into and out of the machining area; and a robot arm on which the additive manufacturing head and the workpiece gripper are mountable. Accordingly, the manufacturing machine improving the productivity in the simple and easy manner is provided.

The invention relates to a device for clamping a blank part (10) to be machined, characterised in that it comprises a frame (20); means (21, 22, 23) for supporting the part to be machined; means (30, 31) for tightening said part (10) to be machined suitable for tightening said part (10) to be machined; controlled locking means (40, 41) with at least two states of said tightening means (30, 31), a locked state in which said tightening means (30, 31) are immobilised relative to the frame (20), and an unlocked state in which said tightening means (30, 31) are free to move relative to the frame (20), while keeping said part (10) to be machined tightened.

A damping apparatus includes a damping unit 30 composed of a plurality of damping plates 36 having plasticity, a holding member 31 holding at least one ends of the damping plates 36 in a manner to allow deflection of the damping plates 36 with the damping plates 36 laminated together, and a contact member 33 provided at a position spaced from a holding position of the holding member 31, and attached to an outermost one of the damping plates 36, or extending through and held by the damping plates 36 in such a manner that it can be brought into contact with the outermost one of the damping plates 36 and can be moved in an extending direction thereof. The damping unit 30 is supported by a support mechanism 2 in such a manner that the contact member 33 can be brought into contact with an object W.

A fixture for stiffening a thin-walled component comprises linking elements which support respective biasing parts and pressure parts. The biasing parts are arranged to urge the pressure parts to press on a thin-walled component, and the linking elements are rigidly connected to one another to resist a reaction force exerted on the pressure parts by the thin-walled component.