Abstract: Internal cyclindrical surfaces are machined with a machining head movable longitudinally along the internal surface. The machining head carries at least one cutting tool having a cutting edge and a chip deflecting surface positioned for deflecting metal chips toward the trailing end of the machining head.

Abstract: Elongated pipes are internally peeled by positioning a machining head within the pipe while providing relative rotational and longitudinal movement between the pipe and machining head. An external clamping force is applied to the pipe generally radially of its longitudinal axis and in substantial alignment with the machining head for minimizing vibration of the pipe during the machining operation.

Abstract: A feed channel for elongated workpieces including a plurality of adjustable workpiece receiving openings. Each opening is formed by a plurality of profiled segments including a fixed segment and at least one movable segment. The movable segments are movable to expose the openings for lateral introduction thereinto of an elongated workpiece. The movable segments are then moved to reduce the size of the openings and engage the workpiece for at least partially straightening same. The movable segments are then moved to increase the size of the openings for providing longitudinal and rotational movement of the workpiece relative to the openings. Workpieces are smoothly carried into the feed channel instead of being rolled or dropped thereinto. The fixed segments are positioned and profiled for locating the longitudinal axes of various diameter workpieces in the same plane.

Abstract: Peeling apparatus includes opposite clamping devices engageable with opposite ends of a workpiece for carrying same longitudinally through a cutter head. Support bearings for the clamping devices are located on opposite sides of the cutter head, and are longitudinally movable for maintaining same as close as possible to the workpiece end faces. This minimizes the length of the clamping devices between the support bearings and the workpiece end faces, and thereby reduces vibrations. The support bearings include hydrostatic support devices transversely engaging the clamping devices to minimize vibration by eliminating transverse play between the parts.

Abstract: An infeed device for a turning machine for finishing the peripheral surfaces of elongated workpieces of circular cross-section includes at least one pair of inlet rolls in which the plane of symmetry of each roll normal to the axis thereof includes a small angle with the direction of movement of the workpieces through the machine, with the planes of symmetry of the two rolls of the pair inclined in opposite directions with respect to the direction of movement of the workpiece.

Abstract: A gripping arrangement for longitudinally advancing elongated workpieces, particularly for use in a drawing bench, a stripping machine and the like, comprises a pair of supports which are mounted on guide rails for movement in paths which are parallel to one another and to the direction of advancement of the workpiece, and co-extensive. Jaw elements are mounted on the supports for movement therewith and for displacement between closed positions in which they engage, and open positions in which they are disengaged from, the workpiece. The gripping arrangement is located downstream of a die and operates in such a manner that always at least one pair of the jaw elements associated with one of the supports engages the workpiece and advances the same in a given direction, thus drawing the workpiece through the die.

Abstract: In an automatic screw thread cutting machine having a clamping carriage for clamping an elongated workpiece, one end portion of which is to be provided with a screw thread, and a spindle coaxially arranged with a workpiece held by said clamping carriage and carrying at one end thereof facing the end portion of the workpiece a screw cutting tool and being driven over a stepdown gearing from a motor, an advancing mechanism for advancing the clamping carriage towards said spindle and including a rod connected to the carriage and having a pair of opposite smooth parallel friction surfaces and a friction wheel driven by the spindle and pressed against one of the friction surfaces while the other friction surface is engaged by a counter roll. The friction wheel is exchangeble against a friction wheel of different diameter to thereby change the speed of advancement of the carriage.

Abstract: Apparatus for pulling elongated workpieces and which apparatus includes a pair of reciprocating clamping devices disposed in a side-by-side relationship and movable in towing and return directions. Elongated rotatable drive shafts extending parallel to the pulling and return directions include helical pulling and return drive paths. Drive path followers on each clamping device switch between the pulling drive path and return drive path for reciprocating the clamping devices.

Abstract: A multiple cutting plate for metal peeling machines in which a steel block of octagonal prismatic cross section is adapted to receive two spacedly arranged cutting blades, by means of brazing, with each blade forming a main and a secondary cutting edge and a chip deflecting step being provided on at least one main cutting edge.

Abstract: A cutting tool for machining the outer surfaces of elongated workpieces such as wire, rod or pipe has main and secondary cutting edges intersecting one another at an included obtuse angle and the secondary cutting edge is substantially longer than the main cutting edge.

Abstract: Elongated workpieces held against rotation at the entrance side of peeling tools are peeled at a substantially constant predetermined rate from the leading ends toward the trailing ends thereof until the trailing ends are adjacent the holding device. The remainder of the workpieces to the trailing ends thereof are then peeled at a slower rate than the predetermined rate.

Abstract: An infeed device for a turning machine for finishing the peripheral surfaces of elongated workpieces of circular cross-section includes at least one pair of inlet rolls in which the plane of symmetry of each roll normal to the axis thereof includes a small angle with the direction of movement of the workpieces through the machine, with the planes of symmetry of the two rolls of the pair inclined in opposite directions with respect to the direction of movement of the workpiece.

Abstract: 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.

Abstract: A gripping arrangement for longitudinally advancing elongated workpieces, particularly for use in a drawing bench, a stripping machine and the like, comprises a pair of supports which are mounted on guide rails for movement in paths which are parallel to one another and to the direction of advancement of the workpiece, and coextensive. Jaw elements are mounted on the supports for movement therewith and for displacement between closed positions in which they engage, and open positions in which they are disengaged from, the workpiece. The gripping arrangement is located downstream of a die and operates in such a manner that always at least one pair of jaw elements associated with one of the supports engages the workpiece and advances the same in a given direction, thus drawing the workpiece through the die.

Abstract: Apparatus for machining the surface of an elongated rigid workpiece passing therethrough in a predetermined direction along a path. The apparatus includes at least one station having opposed tools for engaging opposite sides of the workpiece. The tools have tool axes extending generally perpendicular to the path. The tools are mounted for movement of their axes toward and away from the path, and for tilting movement of their axes relative to the path in a plane extending generally perpendicular to the path.

Abstract: 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.

Abstract: A feed channel for elongated workpieces includes a plurality of adjustable workpiece receiving openings. Each opening is formed by a plurality of profiled segments including at least one movable segment. The movable segments are movable to expose the openings for lateral introduction thereinto of an elongated workpiece. The movable segments are then moved to reduce the size of the openings and engage the workpiece for at least partially straightening same. The movable segments are then moved to increase the size of the openings for providing longitudinal and rotational movement of the workpiece relative to the openings.

Abstract: 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.

Abstract: The present invention relates to an improvement in a peeling machine having a hollow shaft carrying a cutterhead, the improvement being characterized in that the machine includes a clamping device for feeding and removing a workpiece, the clamping device clamps each end of the workpiece, and moves through the hollow shaft and is adapted to move the workpiece axially of the cutter-head, the clamping device maintains the workpiece in a clamped position during a complete peelingoperation.

Abstract: The apparatus has a transporting arrangement which is movable in a predetermined direction and workpiece gripping devices which grip a workpiece to be withdrawn in this direction from a machine tool. The gripping devices are movable with the transporting arrangement in the aforementioned direction and are also movable relative to the transporting arrangement in and opposite to this direction. A control device controls the relative movement between the gripping device and the transporting device.