The present invention relates to an elastic junction device for the dynamic connection, in a rolling mill, between the motor side and the head of an adapter or between the adapter and one or more rolling rolls. The junction device comprises a central body which can be connected to an end of said flange so that it can rotate integrally therewith, said device comprising two skids through a connecting pin so that said block rotates integrally with said flange, said skids being mechanically couplable to said adapter to allow the rotation thereof upon the rotation of said flange and vice versa. The junction device comprises at least a first damper element and at least a second damper element housed in the block and which act on opposite parts of the connecting pin so as to absorb the axial tensions which are transmitted along the adapter as a result of the stresses caused by rolling.

The present invention relates to an elastic junction device for the dynamic connection, in a rolling mill, between the motor side and the head of an adapter or between the adapter and one or more rolling rolls. The junction device comprises a central body which can be connected to an end of said flange so that it can rotate integrally therewith, said device comprising two skids through a connecting pin so that said block rotates integrally with said flange, said skids being mechanically couplable to said adapter to allow the rotation thereof upon the rotation of said flange and vice versa. The junction device comprises at least a first damper element and at least a second damper element housed in the block and which act on opposite parts of the connecting pin so as to absorb the axial tensions which are transmitted along the adapter as a result of the stresses caused by rolling.

A hand-powered jewellery rolling mill is disclosed. The mill comprises a support frame and a pair of opposed parallel cylindrical rollers rotatably mounted to the support frame. A drive shaft is connected to at least one of the rollers for rotation thereof. A manually rotatable handle is configured for providing a drive force to the drive shaft. The handle may be connected to the drive shaft through a high-ratio gear train. The rolling mill may further comprise an input shaft, rotatable by the manually rotatable handle. The input shaft may have a worm and a worm-to-gear coupling may transfer torque from the input shaft to the drive shaft.

A hand-powered jewellery rolling mill is disclosed. The mill comprises a support frame and a pair of opposed parallel cylindrical rollers rotatably mounted to the support frame. A drive shaft is connected to at least one of the rollers for rotation thereof. A manually rotatable handle is configured for providing a drive force to the drive shaft. The handle may be connected to the drive shaft through a high-ratio gear train. The rolling mill may further comprise an input shaft, rotatable by the manually rotatable handle. The input shaft may have a worm and a worm-to-gear coupling may transfer torque from the input shaft to the drive shaft.

A rolling device (1), a method and a rolling train (35) for the cold rolling of rolled stock (3). The rolling device (1)-a rolling stand (5), multiple assembly sets for optionally assembling the rolling stand (5) with one of the assembly sets, and a working-roll drive. Each assembly set comprises two working rolls (7, 8), and for each working roll (7, 8) two working-roll chocks (9). A spindle head (11), can be connected to a working roll journal (16) of the working roll (7, 8). The working rolls (7, 8) of different assembly sets have different working-roll diameter ranges, which are determined by a respective minimum working-roll diameter and maximum working-roll diameter. The rolling stand (5) has mountings (19) for a respective working-roll chock (9) of an assembly set. The working-roll drive has two drive spindles (27), each for driving a working roll (7, 8) via the spindle head (11) assigned to the working roll (7, 8) by rotations about a longitudinal axis of the drive spindle (27).

A power transmission device includes a first power transmission path for transmitting a driving force of a motor to one driven shaft, and a second power transmission path for transmitting the driving force of the motor to another driven shaft. At least one of the first power transmission path or the second power transmission path includes a first intermediate rotor fixed to an output shaft of the motor, a second intermediate rotor rotated by the first intermediate rotor and moving arcuately along an outer circumference of the first intermediate rotor, a driving shaft rotated by the second intermediate rotor and transmitting the driving force to the one driven shaft or the another driven shaft. The driving shaft is configured to move in a direction perpendicular to an axial center direction of the driving shaft in accordance with movement of the second intermediate rotor around the first intermediate rotor.

A power transmission device includes a first power transmission path for transmitting a driving force of a motor to one driven shaft, and a second power transmission path for transmitting the driving force of the motor to another driven shaft. At least one of the first power transmission path or the second power transmission path includes a first intermediate rotor fixed to an output shaft of the motor, a second intermediate rotor rotated by the first intermediate rotor and moving arcuately along an outer circumference of the first intermediate rotor, a driving shaft rotated by the second intermediate rotor and transmitting the driving force to the one driven shaft or the another driven shaft. The driving shaft is configured to move in a direction perpendicular to an axial center direction of the driving shaft in accordance with movement of the second intermediate rotor around the first intermediate rotor.

First drive roller and second drive roller are coplanar and adjustable about an axis to increase or decrease the distance between the same to accommodate varying thicknesses in material. A first shaping roller and a second shaping roller that are also coplanar are provided with ends tiltable on an axis with respect to each other. While the first drive roller and the second drive roller remain parallel with respect to each other, the first shaping roller and the second shaping roller are not constrained in a parallel orientation, but rather can tilt with respect to each other to form sheet metal with complex shapes.

First drive roller and second drive roller are coplanar and adjustable about an axis to increase or decrease the distance between the same to accommodate varying thicknesses in material. A first shaping roller and a second shaping roller that are also coplanar are provided with ends tiltable on an axis with respect to each other. While the first drive roller and the second drive roller remain parallel with respect to each other, the first shaping roller and the second shaping roller are not constrained in a parallel orientation, but rather can tilt with respect to each other to form sheet metal with complex shapes.

First drive roller and second drive roller are coplanar and adjustable about an axis to increase or decrease the distance between the same to accommodate varying thicknesses in material. A first shaping roller and a second shaping roller that are also coplanar are provided with ends tiltable on an axis with respect to each other. While the first drive roller and the second drive roller remain parallel with respect to each other, the first shaping roller and the second shaping roller are not constrained in a parallel orientation, but rather can tilt with respect to each other to form sheet metal with complex shapes.