Abstract: There is disclosed apparatus for reforming a work material into a flat configuration. A pair of first and second sprockets are mounted respectively on a drive shaft and a driven shaft disposed parallel relation to each other, the pair of sprockets being rotatable at the same speed. A first endless belt includes a plurality of first reforming rolls rotatably supported at their opposite ends by opposed first endless chains. A second endless belt includes a plurality of second reforming rolls rotatably supported at their opposite ends by opposed second endless chains. The first and second sprockets are engaged respectively with the first and second reforming rolls to move the first and second endless belts, respectively, and the first and second reforming rolls are brought into frictional rolling engagement respectively with opposed first and second support plates provided respectively in the first and second endless belts.

Abstract: A roll feed apparatus of the type including a pair of rolls for clamping a workpiece therebetween and for intermittently feeding the workpiece, comprises a differential gear, operatively connected to at least one of the rolls, for rotating the roll(s). A mechanical feeding mechanism is connected to the deferential gear for outputting a rotational output thereof to the differential gear for effecting the intermittent feeding.

Abstract: A roll feed device includes a rotatable main roll, and a rotatable sub-roll. The main roll includes an annular stator, and an annular rotor rotatably mounted around the annular stator. The annular stator and the annular rotor cooperate with each other to provide a direct drive motor. The sub-roll includes a rotatable annular roll disposed in opposed relation to the annular rotor of the main roll. A sheet-like material is supplied between the annular rotor and the annular roll to be fed.

Abstract: A positioning table includes a pair of direct drive motors mounted on a flat surface of a base. One of the direct drive motor drives a parallel crank mechanism so as to move a table in one direction. The other direct drive motor drives an arm member connected to the table through a rail, so as to move the table in the other direction perpendicular to the one direction. Thus, the table can be moved in a common plane into a desired position by driving the pair of direct drive motors.

Abstract: An apparatus for converting an oscillatory motion to a linear sliding motion comprises a slide block provided for reciprocatory sliding movement along a linear path and an oscillating shaft. An oscillating arm is adopted to oscillate about the axis of the oscillating shaft. The oscillating arm connects said oscillating shaft to the slide block. An adjusting device is provided on the oscillating arm for adjusting a sliding stroke of the slide block with respect to an angle of rotation of the oscillating shaft. Also, a counting and indicating device is provided on the oscillating arm for counting and indicating an amount of sliding stroke of the slide block.

Abstract: A motion transforming apparatus for transforming a continuous rotary motion of an input shaft into a motion of a predetermined type of an output shaft through a motion transmitting cam device. The fluctuating torque loaded on the input shaft by the motion transmitting cam device is compensated by torque compensating cam device and pneumatic cylinder device for applying a load on the torque compensating cam device. The pneumatic cylinder device includes a cylinder and a piston, and the pressure of the gas in the cylinder compressed or expanded by the reciprocating piston acts on the torque compensating cam device, thereby applying a compensating torque on the input shaft.

Abstract: An eccentricity control device, suitable for use as a slide stroke control device in a press, has a rotary shaft including an eccentric member mounting portion, and an eccentric member mounted on the eccentric member mounting portion. The eccentric member has an outer peripheral surface which is at an eccentricity from the axis of the rotary shaft and sliding surfaces which are held in sliding engagement with both side surfaces of the eccentric member holding portion of the rotary shaft. A screw rod is screwed into the eccentric member mounting portion and extends through the eccentric member mounting portion in a direction perpendicular to the axis of the rotary shaft.

Abstract: A rolling contact device having a shaft adapted to be secured to an element of an apparatus, an outer ring adapted to be in rolling contact with another element of the apparatus, and rolling elements disposed between the shaft and the outer ring, includes an abutting portion provided on each shaft and the outer ring, the abutting portions on the shaft and the outer ring being opposed to each other with a small gap defined therebetween. These abutting portions are arranged such that, when an excessive radial load is applied to the outer ring, the abutting portions are brought into contact with each other to prevent permanent deformation of rolling contact portions of the device.

Abstract: A stroke control has an eccentric member fitting on an eccentric member mounting portion of a drive shaft and the eccentric member is at an eccentricity with respect to the drive shaft and has sliding surfaces which are in sliding engagement with the eccentric mounting portion. A connecting rod rotatably carried by the outer peripheral surface of the eccentric member and swingably connected to the slide. A gear shaft extends through the eccentric member mounting portion and has spline-type gear teeth on end portions thereof, the gear shaft being rotatably supported by the eccentric member. A plurality of screw rods are arranged in parallel with the gear shaft such as to extend through the eccentric member mounting portion, the screw rods being fixed to the eccentric member. Gears screwed to the screw rods and meshing with the spline type gear teeth on the gear shaft, the gears contacting the eccentric member mounting portion.

Abstract: A press with a stroke control device has a drive shaft having an eccentric member mounting portion with an eccentric member thereon, the eccentric member is at an eccentricity with respect to the drive shaft and has sliding surfaces which are in sliding engagement with the eccentric mounting portion, a cross slide supporting the eccentric member, and a slide which surrounds and supports the cross slide therein, the slide being slidable while supporting the cross slide which moves laterally when the eccentric member rotates with the drive shaft.

Abstract: A material feeding apparatus for intermittently feeding a sheet or rod material in a predetermined length has a first gripper device having a first fixed gripper and a first movable gripper for cooperation with each other in clamping and unclamping a material therebetween, and a second gripper device having a similar construction as the first device and carried by a slide block provided for reciprocatory sliding movement along the path of feed of the material.

Abstract: A rolling contact device having a shaft adapted to be secured to an element of an apparatus, an outer ring adapted to be in contact with another element of the apparatus, and rolling elements disposed between the shaft and the outer ring. The contact device has a projection mounted on or integrated with the shaft. The projection is so arranged that, when an excessive radial load is applied to the outer ring from the above-mentioned another element, the projection is brought into contact with the another element and reduces the load acting on contact portions among the rolling elements, the outer ring and the shaft.

Abstract: A roll feed apparatus for intermittently feeding a strip by a constant length into manufacturing machines. A pair of first and second rolls and a pair of first and second brake shoes are arranged along a strip transporting path. The rolls move swingingly in a strip transporting direction to transport the strip clamped between the rolls. The rolls move away from each other when they swingingly move in a direction opposite to the strip transporting direction. First and second cams are mounted respectively on outer and inner shaft members of a drive shaft for rotation therewith. The inner shaft member can be adjusted in its angular position relative to the outer shaft member. The cams are operatively connected to the second brake shoe.

Abstract: A roll feed apparatus has first and second rolls for gripping a plate when rotated in first directions and moving from each other when rotated in second directions, and first and second brake pieces for fixing the plate during rotation in the second direction. A pivot body has support portions along its length for rotatably supporting a first roll shaft at opposite ends. A pair of pivot shafts parallel to the first roll shaft are rotatably connected to the pivot body and a housing and eccentric with respect to each other. First and second adjusting arms are fixed to the shafts; third and fourth adjusting arms are pivotally fitted to the support portions and support the first brake piece. A first adjusting device with first and second links coupled to the first and second adjusting arms moves portions of the first roll and first brake piece located next to first and second arms towards or away from the second roll and the second brake piece by pivoting these arms.

Abstract: A pressing machine has a drive pulley secured to a press crank shaft, an intermediate shaft parallel to the press crank shaft and an input shaft of a material feeding device, the intermediate shaft being supported by a tension adjusting device which is rotatably supported by the crank shaft and the input shaft of the material feeding device, a first intermediate pulley which is secured to one end of the intermediate shaft and is drivingly connected to the drive pulley through a first endless torque transmission device, and a second intermediate pulley which is secured to the other end of the intermediate shaft and is drivingly connected to an input pulley secured to the input shaft of the material feeding device through a second endless torque transmission device.

Abstract: A material feeding apparatus for intermittently feeding a sheet or rod material in a predetermined length has a first gripper device having a first fixed gripper and a first movable gripper for cooperation with each other in clamping and unclamping a material therebetween, and a second gripper device having a similar construction as the first device and carried by a slide block provided for reciprocatory sliding movement along the path of feed of the material.

Abstract: A roll feed apparatus for intermittently feeding a strip by a constant length into manufacturing machines. A pair of first and second rolls and a pair of first and second brake shoes are arranged along a strip transporting path. The rolls move swingingly in a strip transporting direction to transport the strip clamped between the rolls. The rolls move away from each other when they swingingly move in a direction opposite to the strip transporting direction. First and second cams are mounted respectively on outer and inner shaft members of a drive shaft for rotation therewith. The inner shaft member can be adjusted in its angular position relative to the outer shaft member. The cams are operatively connected to the second brake shoe.

Abstract: A press machine has a frame; a horizontal input shaft rotatably carried by the frame and rotationally driven by a driving system; a cam means including at least one cam mounted on the input shaft; a cam follower means including a cam follower slide embracing the cam and mounted on the frame for free vertical movement, the cam follower slide being adapted to be moved reciprocatingly up and down in accordance with the rotation of the cam; a movable die portion fixed to the lower end of the cam follower slide; and a stationary die portion provided on the bottom of the frame for cooperation with the movable die portion. The cam has a contour which approximates a spherical regular polygon such as a spherical triangle, having 2n+1 apices (n being an integer) which are rounded, the surfaces of the sides of the spherical regular polygon being formed by the same curve.

Abstract: A roll feed apparatus having a first roll and a second roll for oscillatory rotation in opposite directions such as to intermittently feed a sheet clamped therebetween. The roll feed apparatus comprises a pivot member having one end fitting on a pivot shaft extending from the housing of the apparatus substantially in parallel with the first roll shaft and the other which is free, the pivoting member being mounted at its portion between the one and the free ends on a first roll shaft, the pivot member being adapted to cause, when it pivots, the first roll shaft and the first roll to move towards and away from said second roll, a first adjusting device for adjusting the force by which the first roll is urged towards the second roll is adjusted, and a second adjusting device for adjusting the gap between the rolls in accordance with the thickness of the sheet to be fed. The first and second adjusting devices are operable independently of each other.

Abstract: A roll feed apparatus having a first roll and a second roll for intermittently clamping therebetween and feeding sheet material. An adjusting device is provided for adjusting the gap between the first and second rolls and includes a pivot member adapted to cause, when it pivots, the first roll to more towards and away from the second roll. First and second braking members temporarily fix the sheet when it is unclamped from the rolls. The second braking member is carried by a braking position adjusting arm disposed between the pivot member and the path of feed of the sheet. The adjusting arm is pivotally carried by the pivot member and arranged such that an imaginary plane connecting the portions of the first roll and the second braking member closest to the path of feed of the sheet is moved, when the pivot member pivots over a predetermined angle, substantially in parallel with the path of feed of the sheet.