摘要:
A heat-resistant sheet is provided between a fusing roller and a pressing member made of a resilient material. The heat-resistant sheet is composed of a glass fiber substrate coated with or impregnating a fluororesin having good mold lubrication and heat-resistance, such as PFA and PTFE. A paper having a pre-fused toner image is carried through a section between the fusing roller and heat-resistant sheet. Accordingly, wear or separation of the heat-resistant sheet caused by friction with the fusing roller can be prevented, thereby improving durability of the heat-resistant sheet.
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:
It is an object of the invention to provide a method of manufacturing an inner ring for a rolling bearing in which the directions of the metal flows of the inner ring can be made substantially parallel to the shape of the race surface of the inner ring to thereby manufacture a rolling bearing inner ring having an enhanced durability. In the manufacturing method, a cylindrical steel billet 1 (shown in FIG. 1 (a) including a large number of metal flows 2 formed in the axial direction of the section thereof is held and upset by and between first upper and lower metallic molds 4a and 4b each having a transfer surface 3 for the race surface of the inner ring and, at the same time, recesses 6 are formed in the upper and lower plane portions of the cylindrical steel billet 1 respectively (shown in FIG. 1(c), next after the upper and lower shoulder portions of the recesses are respectively held by and between second upper and lower metallic molds 9a and 9b (shown in FIG. 1 (c), the recesses 6 are pressed equally from above and from below by the second upper and lower metallic molds 9a and 9b to thereby form a centrally pressed portion 10, then the inner portion of the centrally pressed portion 10 is removed to thereby produce a ring-shaped workpiece, and finally the ring-shaped workpiece is rolled and shaved to thereby manufacture an inner ring.
摘要:
A digital multifunction peripheral provided with a scanner portion, an operation portion, an image forming portion, a device control portion, a fax modem, a communications portion, a management portion, and a hard disk (HD) is connected to a server apparatus via an external network. A large-format display is attached integrally to a rear face of a case of the digital multifunction peripheral, with a first display screen facing toward the outside. The device control portion is connected to the server apparatus via the external network, and displays various pieces of provided information managed by the server apparatus on the first display screen.
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 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:
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:
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 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 pivotal member 2a comprises a main member 19 having inner and outer peripheral faces formed axially symmetric, an auxiliary member 20 having an inner peripheral face 23 made eccentric with respect to an outer peripheral face 24, such that the main member 19 is pivotally supported on the outer peripheral face of a fixed shaft 1, and a tension pulley 5 supported so as to be freely rotatable, on the outer peripheral face of the auxiliary member 20, thereby simplifying manufacturing operations for a pivotal member 2a of an auto tensioner to reduce the manufactured cost.