摘要:
In an annular member forming apparatus including: a forming roll rotatable in contact with an outer cylindrical surface of an annular workpiece; a mandrel relatively movable towards and away from the forming roll in contact with an inner cylindrical surface of the workpiece; and an outside diameter detecting device for detecting an outside diameter of the workpiece which is to be worked, the apparatus further includes a moving device for moving relatively the forming roll and the mandrel and for pressing the workpiece by the forming roll and the mandrel moved towards each other to subject the workpiece to rough rolling and to finish rolling. The moving device includes a retracting device for correcting an elastic deformation of the forming roll, the mandrel and the moving is device occurring during the rough rolling, for a switching time from the rough rolling to the finish rolling by an output signal from the outside diameter detecting device. The moving device is moved backwardly away from the mandrel by a distance corresponding to a difference between amounts of elongation which are due to a rolling load during the rough rolling and due to a rolling load during the finish rolling for the switching time.
摘要:
In an annular member forming apparatus including: a forming roll rotatable in contact with an outer cylindrical surface of an annular workpiece; a mandrel relatively movable towards and away from the forming roll in contact with an inner cylindrical surface of the workpiece; and an outside diameter detecting device for detecting an outside diameter of the workpiece which is to be worked, the apparatus further includes a moving device for moving relatively the forming roll and the mandrel and for pressing the workpiece by the forming roll and the mandrel moved towards each other to subject the workpiece to rough rolling and to finish rolling. The moving device includes a retracting device for correcting an elastic deformation of the forming roll, the mandrel and the moving device occurring during the rough rolling, for a switching time from the rough rolling to the finish rolling by an output signal from the outside diameter detecting device. The moving device is moved backwardly away from the mandrel by a distance corresponding to a difference between amounts of elongation which are due to a rolling load during the rough rolling and due to a rolling load during the finish rolling for the switching time.
摘要:
A display apparatus that has a display screen visible from a back face or a side face of an image forming apparatus is disposed on at least one side face of an image forming apparatus case.
摘要:
A bearing unit for vehicle wheel support comprising a shaft having a mounting flange for vehicle wheel or suspension apparatus, a step portion formed on one end portion thereof, a first inner ring raceway directly formed thereon, and a crimped portion formed on the end side of the step portion, and an inner ring fitted onto the step portion and having a second inner ring raceway thereon, the shaft being quench hardened at least at the first inner ring raceway with the crimped portion kept as formed and without quench hardened, and the inner ring being fixed to the shaft by the crimped portion of the shaft.
摘要:
A caulked portion is formed by plastic deformation of a cylindrical portion which is formed at the inner end of a shaft member and is reduced in thickness toward the leading end in a diametrical outward direction. The force required to form the caulked portion is reduced, and the caulked portion is less susceptible to damage. Further, the force of the caulked portion for supporting the inner ring is ensured.
摘要:
A process is provided for the production of a webbing take-up spindle by cold-forming of a cylindrical blank. The cylindrical blank is cold-formed into a preform having a flange-shaped disc portion and a spindle portion extending from and in continuation with said disc portion. Wedge action dies, whose pressing portions are in the form of ratchet teeth, are pressed against an upper and lower sides of an outer peripheral portion of the disc portion, respectively, so that ratchet teeth are partially formed and a thin-walled portion is also formed circumferentially along said partially-formed ratchet teeth. The thin-walled portion is then punched to fully form the ratchet teeth. A forming apparatus suitable for use in the practice of the process is also disclosed.
摘要:
To provide an ink jet image forming method and an ink jet image forming device capable of forming an image of superior quality by using quickly drying ink and slowly drying ink in combination, wherein deviation which may occur in a discharge position of ink causes no reduction in the resolution of the image, black ink is adopted as the slowly drying ink, and so is white ink as one of the quickly drying ink. A white dot is formed with the white ink in a position to form a black dot on white recording paper, thereafter applying the black ink thereto. Deviation which may occur in the discharge position of the quickly drying white ink on the recording paper thus becomes almost visually unnoticeable.
摘要:
A roller cage made of metal for holding rollers of a roller bearing, includes: separation bars separately defining a plurality of window holes along a peripheral direction of the bearing with a constant interval thereamong. The window holes respectively receive said rollers therein. Each of the separation bars includes: a contact surface being formed by press-molding one of an outer diameter surface side end portion and an inner diameter surface side end portion thereof, and contacting with the rolling surface of the roller; and an expansion portion expanding to a radial direction of the bearing at the other of the outer diameter surface side end portion and the inner diameter surface side end portion which is not subjected to the press-molding.
摘要:
A tool controlling apparatus includes a position controlling unit and a torque controlling unit for carrying out the conversion between the position control and the torque control of the tool for pushing the work, and the conversion of the torque in the torque control in a moment by using a servo motor in the course of process of the work.
摘要:
In an electrically excited transfer recording device which transfers an image or images formed in a recording film onto a recording chart, a recording head is comprised of a head base of resin having insulating properties and a plurality of electrode needles formed on the head base. During the printing, a resistance layer formed in the recording film is electrically charged by the electrode needles and ink contained in the recording film is fused upon generation of heat in the resistance layer to be transferred onto the recording chart.