Th. Kieserling & Albrecht

Kieserling & Albrecht

Th.kieserlin & Albrecht

Ralf Fangmeier

Alfons Goeke

Carl-Ludwig Pohler

Rolf Eckart Koch

Lothar Bracht

A method of straightening elongated workpieces of circular or other cross section comprises subjecting a portion of the workpiece during its movement in longitudinal direction thereof to rotary bending forces so that successive curvatures of the workpiece in a zone trailing said portion in said direction gradually increase to thereby surpass the yield point of the material of the workpiece and in a zone leading said portion in said direction gradually decrease in such a manner that the decrease of the curvatures and the corresponding decrease of the plasticity of the workpiece occurs slower than the increase thereof, and an apparatus for carrying out the method.

Method and apparatus for straightening of elongated workpieces

Machine for simultaneous reduction and straightening of metallic tubes or rods has a reducing die which is mounted in the frame downstream of a guide for workpieces and upstream of a ring-shaped straightening tool whose axis orbits about the axis of the opening in the die. The outlet end of the internal surface surrounding the opening in the die tapers counter to the direction of lengthwise movement of workpieces through the die. The guide insures that the workpieces cannot be flexed upstream of the throat portion of the internal surface of the die, and a second guide can be provided downstream of the straightening tool to confine the flexing of the workpieces to the region between the throat portion of the internal surface of the die and the second guide. The tool is mounted in a spherical bearing which is installed in the eccentric bore of a sleeve driven by a pulley to rotate about the axis of the die whereby the tool orbits the axis of its passage about the axis of the opening in the die.

Combined drawing and straightening machine for metallic tubes or rods

Method of producing bright steel from rolled steel wire, in which the diameter of the rolled wire is first reduced by passing the same through a calibrating device, preferably a reducing mill, whereby internal stresses assymetrical with respect to the wire axis are produced in the wire, thereafter removing peripheral surface portions from the wire and subsequently straightening the wire, and subjecting the wire before removing peripheral surface portions therefrom to a radial bending force rotating about the axis of the wire to plastically deform the latter to thus reduce the assymetrical internal stresses to thereby improve the perfect roundness of the finished product.

Method of producing bright steel from rolled steel wire

A straightening machine for straightening elongated workpieces at high speed comprises a plurality of stands or frames mounted on a machine bed displaceable with respect to each other in the direction of the movement of the workpieces. Each stand comprises a cage provided with a set of four straightening rolls rotatable about the axis. Each cage is mounted on a cage holder on a guide adjustable in radial direction with respect to the workpiece axis and the guides on the plurality of stands are located in parallel planes normal to the workpiece axis, with the guides on successive stands extending normal to each other as viewed in the direction of movement of the workpiece through the machine.

Machine for straightening elongated workpieces

A method and an apparatus for carrying out the method for straightening sections of elongated workpieces such as bars and tubes in a bending, forging and/or straightening machine having at least one straightening roll which can be moved radially relative to the workpiece and at least a second roll for determining the straightening gap end face. During the initial and end phase of the straightening process the head and tail sections of the workpiece, respectively, are affected by a roll which moves in accordance with a preselected mathematical function or sequence.

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Solingen, Germany

Ralf Fangmeier