Apparatus for use in the formation of a helical screw flight, the apparatus comprising: a drive first and second support heads arranged for relative axial movement with respect to one another in a direction of a main axis in response to actuation of the drive the first and second support heads being configured so as to be able to provide for a plurality of position adjustments including a lateral position adjustment whereby the first and second support heads can be displaced or moved laterally with respect to the main axis in a direction of respective lateral axes and a rotational position adjustment wherein at least one of the first and second work heads can be rotated about a rotation axis which extends in a direction generally parallel to coaxial with the main axis.

A twisted helically-shaped member (15) in the form of a twisted tie, twisted fastener, twisted wire or twisted rod; said twisted helically-shaped member (15) having an axial core (12) and a plurality of helical threads (13H) extending along the axial core (12); and wherein a variation in lead measurements along the length of at least one helical thread (13H), is less than a variation in pitch measurements along the lengths of the helical threads (13H); wherein the axial core (12) has a transverse cross-sectional area comprising two-fifths or less of the transverse circumscribed cross-sectional area of the helical threads (13H).

A twisted helically-shaped member (15) in the form of a twisted tie, twisted fastener, twisted wire or twisted rod; said twisted helically-shaped member (15) having an axial core (12) and a plurality of helical threads (13H) extending along the axial core (12); and wherein a variation in lead measurements along the length of at least one helical thread (13H), is less than a variation in pitch measurements along the lengths of the helical threads (13H); wherein the axial core (12) has a transverse cross-sectional area comprising two-fifths or less of the transverse circumscribed cross-sectional area of the helical threads (13H).

A compressive torsion forming device for processing a processing material using a first die and a second die facing each other includes a sliding portion that includes a first hydraulic chamber, and slides in accordance with a change in internal pressure of the first hydraulic chamber so as to move the first die in a direction of an axis; a rotating table provided with the second die and rotatable about the axis; a table support portion provided opposite to the second die with the rotating table interposed therebetween in the direction of the axis; and a rotational bearing that rotatably supports the rotating table with respect to the table support portion, and receives a force acting on the rotating table in a direction from the second die toward the rotating table.

A compressive torsion forming device for processing a processing material using a first die and a second die facing each other includes a sliding portion that includes a first hydraulic chamber, and slides in accordance with a change in internal pressure of the first hydraulic chamber so as to move the first die in a direction of an axis; a rotating table provided with the second die and rotatable about the axis; a table support portion provided opposite to the second die with the rotating table interposed therebetween in the direction of the axis; and a rotational bearing that rotatably supports the rotating table with respect to the table support portion, and receives a force acting on the rotating table in a direction from the second die toward the rotating table.

Method and means of manufacturing ties, fasteners and rods (15) having a plurality of longitudinal threads by forcing a coil of roll-profiled feed-wire made of steel (11) through a twisting-die made of plastic (1). Also described is: a twisting-die made of plastic (1) that is suitable for twisting profiled feed-wire (11) made of steel; a method of forming a plastic twisting die (1) using an driven tap (31) in the form of a twisted rod (15); and a helically-shaped member (15) having lead measurements (X) along the length of the helical thread that vary less than pitch measurements (Y) along the lengths of the helical threads.

A method of forming a gas turbine engine component according to an example of the present disclosure includes, among other things, attaching a cover skin to an airfoil body, the airfoil body and the cover skin cooperating to establish pressure and suction sides of an airfoil, positioning the airfoil between first and second dies of a deforming station, heating the airfoil body to a first predefined temperature threshold between the first and second dies, and moving the first die relative to the second die to hold the airfoil between the first and second dies subsequent to the heating step, and then deforming the airfoil between the first and second dies.

A method of forming a gas turbine engine component according to an example of the present disclosure includes, among other things, attaching a cover skin to an airfoil body, the airfoil body and the cover skin cooperating to establish pressure and suction sides of an airfoil, positioning the airfoil between first and second dies of a deforming station, heating the airfoil body to a first predefined temperature threshold between the first and second dies, and moving the first die relative to the second die to hold the airfoil between the first and second dies subsequent to the heating step, and then deforming the airfoil between the first and second dies.

A processing device processes a frame-shaped workpiece which extends in a prescribed extension direction, and includes, integrally, a plate-shaped web surface portion, a plate-shaped first flange portion that bends and extends from one end of the web surface portion, and a plate-shaped second flange portion which bends from the other end of the web surface portion and extends in the opposite direction to the first flange portion. The processing device includes a shaping device which conveys the workpiece in the extension direction, and an exit side pinch roll device provided further downstream, in the workpiece conveying flow direction, than the shaping device. The exit side pinch roll device includes a first roll which presses a central region of an upper surface side of the web surface portion, and a second roll which presses a central region of a lower surface side of the web surface portion.

In a method of manufacturing a fin-assembled tube by arranging a helical fin in an interior of a tube, a plate-shaped fin material is inserted into the interior of the tube and the helical fin is formed by twisting the fin material in the interior of the tube.