The present invention relates to a bending mold device for bidirectional pipe bending, comprising a mounting base which is horizontally arranged on a rack in a sliding manner, wherein the mounting base is provided with a translation lead screw driving the mounting base to slide and a translation motor, the rack is provided with a lead screw nut, a pipe bending spindle is rotatably disposed on the mounting base and a power mechanism is disposed on the mounting base, the upper end of the pipe bending spindle is movably connected to a lower rotating base, the lower rotating base is provided with a first pipe bending shaft and a second pipe bending shaft, the first pipe bending shaft and the second pipe bending shaft can be alternatively concentric with the pipe bending spindle through the sliding of the mounting base, the first pipe bending shaft is provided with a first bending mold lower mold, the second pipe bending shaft is provided with a second bending mold lower mold, the rack is vertically provided with a cylinder above the lower rotating base, the end part of a piston rod of the cylinder is fixedly provided with an upper limiting plate and a lower limiting plate in a sleeving manner, an upper rotating base is movably clamped between the upper limiting plate and the lower limiting plate, and the upper rotating base is rotatably provided with a first bending mold upper mold and a second bending mold upper mold. The device can realize bidirectional pipe bending and can bend an elbow pipe for more than 180 degrees.

The present invention relates to a bending mold device for bidirectional pipe bending, comprising a mounting base which is horizontally arranged on a rack in a sliding manner, wherein the mounting base is provided with a translation lead screw driving the mounting base to slide and a translation motor, the rack is provided with a lead screw nut, a pipe bending spindle is rotatably disposed on the mounting base and a power mechanism is disposed on the mounting base, the upper end of the pipe bending spindle is movably connected to a lower rotating base, the lower rotating base is provided with a first pipe bending shaft and a second pipe bending shaft, the first pipe bending shaft and the second pipe bending shaft can be alternatively concentric with the pipe bending spindle through the sliding of the mounting base, the first pipe bending shaft is provided with a first bending mold lower mold, the second pipe bending shaft is provided with a second bending mold lower mold, the rack is vertically provided with a cylinder above the lower rotating base, the end part of a piston rod of the cylinder is fixedly provided with an upper limiting plate and a lower limiting plate in a sleeving manner, an upper rotating base is movably clamped between the upper limiting plate and the lower limiting plate, and the upper rotating base is rotatably provided with a first bending mold upper mold and a second bending mold upper mold. The device can realize bidirectional pipe bending and can bend an elbow pipe for more than 180 degrees.

A digitizer pointer is provided as part of a system for correcting a curvature or deformity in a patient's spine based on the digitized locations of implanted screws and tracking the placement of the rod as it is placed in a minimally invasive fashion. The digitizer pointer is includes an offset adjustment feature, a swivel feature, and a translation feature.

A pipe bend die unit comprises a clamp member having a first groove part of half-circular cross section on an outer peripheral surface thereof with a fitting recess extending in a peripheral direction by a first predetermined length on a planar surface perpendicular to a rotary axis, and a counter pressure member having a second groove part of half-circular cross section formed on an outer peripheral surface thereof, and a fitting protrusion extending in a peripheral direction by a second predetermined length from a tip end portion of the second groove part. The fitting protrusion is positioned in the fitting recess so that the first and second groove parts are combined to form a pipe-receiving groove of half-circular cross section. The counter pressure member and the clamp member are hingedly connected to one another so as to be rotatable relative to each other about the rotary axis.

A pipe bend die unit comprises a clamp member having a first groove part of half-circular cross section on an outer peripheral surface thereof with a fitting recess extending in a peripheral direction by a first predetermined length on a planar surface perpendicular to a rotary axis, and a counter pressure member having a second groove part of half-circular cross section formed on an outer peripheral surface thereof, and a fitting protrusion extending in a peripheral direction by a second predetermined length from a tip end portion of the second groove part. The fitting protrusion is positioned in the fitting recess so that the first and second groove parts are combined to form a pipe-receiving groove of half-circular cross section. The counter pressure member and the clamp member are hingedly connected to one another so as to be rotatable relative to each other about the rotary axis.

The invention relates to a method for induction bend forming a compression-resistant pipe (I) having a large wall thickness and a large diameter. According to said method, in an initial phase t1, an initial tangent (3) of the pipe (I) is heat-treated by pushing the initial tangent (3) through the inductor (20) without the intervention of the bending lock (31). At the end of the initial tangent (3) the advance of the pipe is stopped at a time t2, and the inductor (20) is moved along the pipe (I) counter to the advance direction while the bending lock (31) is closed on the pipe (I). In order to induce the bending process in a phase t3, the movement speed of the inductor (20) is reduced to zero and the latter is moved to its bending position. At the same time, the advance of the pipe (I) is started. In a phase t4, a pipe bend (4) is produced at a constant process advance speed of the pipe (I). In a phase t5, the advance speed of the pipe (I) is reduced and the inductor (20) is accelerated counter to the advance direction while the bending lock (31) is opened. In a phase t6, a final tangent (5) is heated by further advancing the inductor in the opposite direction.

The invention relates to a method for induction bend forming a compression-resistant pipe (I) having a large wall thickness and a large diameter. According to said method, in an initial phase t1, an initial tangent (3) of the pipe (I) is heat-treated by pushing the initial tangent (3) through the inductor (20) without the intervention of the bending lock (31). At the end of the initial tangent (3) the advance of the pipe is stopped at a time t2, and the inductor (20) is moved along the pipe (I) counter to the advance direction while the bending lock (31) is closed on the pipe (I). In order to induce the bending process in a phase t3, the movement speed of the inductor (20) is reduced to zero and the latter is moved to its bending position. At the same time, the advance of the pipe (I) is started. In a phase t4, a pipe bend (4) is produced at a constant process advance speed of the pipe (I). In a phase t5, the advance speed of the pipe (I) is reduced and the inductor (20) is accelerated counter to the advance direction while the bending lock (31) is opened. In a phase t6, a final tangent (5) is heated by further advancing the inductor in the opposite direction.

A die and counter-die type bending machine for right- and left-hand bending an elongated piece (P) has a roller-shaped die (1) provided with a partial circumferential groove (2) that is interrupted at its two ends, the die (1) being driven by the shaft (0) of a motor, and a pair of counter-dies (25, 26) being carried by respective counter-die support members (19, 20) pivoted on a turret (11) that is rotatable mounted on a slide (8) in a given arc of rotation about its axis perpendicular to the slide (8) by a lever (12). The die (1) has an elongated piece retaining element (3, 4) at each of two ends of its partial circumferential groove (2). The first or the second counter-die is selectable to co-operate with the die in bending the elongated piece depending on the required curvature to right hand or left hand.

A die and counter-die type bending machine for right- and left-hand bending an elongated piece (P) has a roller-shaped die (1) provided with a partial circumferential groove (2) that is interrupted at its two ends, the die (1) being driven by the shaft (0) of a motor, and a pair of counter-dies (25, 26) being carried by respective counter-die support members (19, 20) pivoted on a turret (11) that is rotatable mounted on a slide (8) in a given arc of rotation about its axis perpendicular to the slide (8) by a lever (12). The die (1) has an elongated piece retaining element (3, 4) at each of two ends of its partial circumferential groove (2). The first or the second counter-die is selectable to co-operate with the die in bending the elongated piece depending on the required curvature to right hand or left hand.