A bender machine designed to bend and shape sheet metal comprising a blade holder unit (1) which has a “C” shaped section, which is mobile and moves in two directions, both of which are at right angles to a fixed bench, and where the unit is fitted with one or more bending blades, wherein: servomotors and planetary gear reducers are used for moving the blade holder unit (1);
the blade holder unit (1) uses a jointed mechanism comprising two mechanical units (20, 20a; 30, 30a) which form a closed kinematic chain of five components connected by five kinematic pairs all of which are revolute; the mechanical unit (20, 20a) for moving the blade holder unit (1) in a substantially vertical direction comprises a pair of servomotors coupled respectively to two gear reducers, which operate respective cranks (9, 9a) on which respective connecting rods (8, 8a) are hinged, and where the other end of each connecting rod is connected by respective pins (7, 7a) to a respective base (10, 10a) fixed to the blade holder unit (1). The mechanical unit (30, 30a) for moving the blade holder unit (1) in a substantially horizontal direction comprises one pair of servomotors (6, 6a) coupled to corresponding planetary gear reducers, each of which operates a respective camshaft (3, 3a), and also characterized in that the camshafts (3, 3a) are hinged on the rear supports (2, 2a) of the blade holder unit (1).

A bender machine designed to bend and shape sheet metal comprising a blade holder unit (1) which has a “C” shaped section, which is mobile and moves in two directions, both of which are at right angles to a fixed bench, and where the unit is fitted with one or more bending blades, wherein: servomotors and planetary gear reducers are used for moving the blade holder unit (1);
the blade holder unit (1) uses a jointed mechanism comprising two mechanical units (20, 20a; 30, 30a) which form a closed kinematic chain of five components connected by five kinematic pairs all of which are revolute; the mechanical unit (20, 20a) for moving the blade holder unit (1) in a substantially vertical direction comprises a pair of servomotors coupled respectively to two gear reducers, which operate respective cranks (9, 9a) on which respective connecting rods (8, 8a) are hinged, and where the other end of each connecting rod is connected by respective pins (7, 7a) to a respective base (10, 10a) fixed to the blade holder unit (1). The mechanical unit (30, 30a) for moving the blade holder unit (1) in a substantially horizontal direction comprises one pair of servomotors (6, 6a) coupled to corresponding planetary gear reducers, each of which operates a respective camshaft (3, 3a), and also characterized in that the camshafts (3, 3a) are hinged on the rear supports (2, 2a) of the blade holder unit (1).

A die or punch is provided for a press tool. The die or punch includes a body and a roller assembly having a holder and a roller. The holder is shaped to slidably engage with a complementary cavity in the body to facilitate secure installation of the holder in the body. The holder is able to be removably inserted into the body to present the roller as a forming edge to shape a work piece in a press tool. The roller is able to turn with respect to the holder when shaping a work piece to protect the roller against wear.

The invention relates to a bending device for forming corrugations in a metal sheet, comprising: a lower frame; an upper frame able to move vertically between a rest position and a bending position; at least two dies, carried by the lower frame; one being fixed with respect to the lower frame and the other mounted with the ability to slide; at least two punches carried by the upper frame; one being fixed and the other being mounted with the ability to slide on the upper frame; the bending device being designed so that, in operation, as the upper frame moves towards its bending position, the metal sheet transmits a pulling force to the sliding punch and to the sliding die which force moves them from a spaced-apart position toward a close-together position.

The invention relates to a bending device for forming corrugations in a metal sheet, comprising: a lower frame; an upper frame able to move vertically between a rest position and a bending position; at least two dies, carried by the lower frame; one being fixed with respect to the lower frame and the other mounted with the ability to slide; at least two punches carried by the upper frame; one being fixed and the other being mounted with the ability to slide on the upper frame; the bending device being designed so that, in operation, as the upper frame moves towards its bending position, the metal sheet transmits a pulling force to the sliding punch and to the sliding die which force moves them from a spaced-apart position toward a close-together position.

A metal-cutting machine for flat material parts comprises metal-cutting tools (21, 22, 23), held on a machine frame, and a support unit (10), on which a flat material part to be machined can be placed for a positioning in the metal-cutting machine. The support unit comprises a feed table (10), which is clamped remote from the beams and on one side about a pivot axis that is pivotable parallel to the beam orientation (39) and the free end (26) of which feed table in the parking position rests on a support surface (27) assigned to the lower beam (21), which support surface is connected via a sliding surface (28) to the top side (29) of the lower beam (21). The clamped end (36) of the feed table (10) is here movable by means of a drive (40), in the direction of extension (45), into its loading and removal position, wherein the bottom edge (25) of the feed table slides from the support surface (27) over the sliding surface (28) and beyond the top side (29) of the lower beam, and the top side (29) forms the support for the bottom side (16) of the feed table (10) in the loading and removal position for a flat material part.

A metal-cutting machine for flat material parts comprises metal-cutting tools (21, 22, 23), held on a machine frame, and a support unit (10), on which a flat material part to be machined can be placed for a positioning in the metal-cutting machine. The support unit comprises a feed table (10), which is clamped remote from the beams and on one side about a pivot axis that is pivotable parallel to the beam orientation (39) and the free end (26) of which feed table in the parking position rests on a support surface (27) assigned to the lower beam (21), which support surface is connected via a sliding surface (28) to the top side (29) of the lower beam (21). The clamped end (36) of the feed table (10) is here movable by means of a drive (40), in the direction of extension (45), into its loading and removal position, wherein the bottom edge (25) of the feed table slides from the support surface (27) over the sliding surface (28) and beyond the top side (29) of the lower beam, and the top side (29) forms the support for the bottom side (16) of the feed table (10) in the loading and removal position for a flat material part.

A method of forming a vehicle panel includes deforming a sheet metal workpiece between stamping tools to form a first and second edges that converge at a corner of the workpiece's main surface. The first edge is defined by a junction of the main surface and a first flange. The second edge is defined the main surface and a second flange. Forming the first and second edges includes deforming the workpiece so that the second flange has a first region bent to a first angle relative to the main surface and an unwinding region bent to an angle that unwinds from the first region as the second flange approaches the corner. The method includes deforming the workpiece between a second set of stamping tools that deform the first flange and the unwinding region of the second flange until the first and second flanges are bent greater than 90°.

A duct making apparatus includes a first station configured to accept a formable sheet material and a second station configured to receive the formable sheet material from the first station. The first station includes a mechanism for forming one of a male lock bend and a female lock seam in a leading edge of the formable sheet material. The second station includes a retractable conveyor. Movement of the sheet material from the first station to the second station defines an axis of travel of the sheet material. The retractable conveyor is selectively movable from a first position in which the retractable conveyor is in close association with the first station, and a second position in which the retractable conveyor is spaced from the first station.

A duct making apparatus includes a first station configured to accept a formable sheet material and a second station configured to receive the formable sheet material from the first station. The first station includes a mechanism for forming one of a male lock bend and a female lock seam in a leading edge of the formable sheet material. The second station includes a retractable conveyor. Movement of the sheet material from the first station to the second station defines an axis of travel of the sheet material. The retractable conveyor is selectively movable from a first position in which the retractable conveyor is in close association with the first station, and a second position in which the retractable conveyor is spaced from the first station.