摘要:
A material comprising crosslinked polyrotaxanes which exhibits desired viscoelasticity, particularly stress-strain characteristics with a wide low-stress region, in spite of being free from solvent; and a process for production of the same. The material comprises a first polyrotaxane bearing first cyclic molecules and a second polyrotaxane bearing second cyclic molecules, and the first and second polyrotaxanes are crosslinked via the first and second cyclic molecules. The material is free from solvent and exhibits a stress of 2.0 MPa or below at 50% strain.
摘要:
A material comprising crosslinked polyrotaxanes which exhibits desired viscoelasticity, particularly stress-strain characteristics with a wide low-stress region, in spite of being free from solvent; and a process for production of the same. The material comprises a first polyrotaxane bearing first cyclic molecules and a second polyrotaxane bearing second cyclic molecules, and the first and second polyrotaxanes are crosslinked via the first and second cyclic molecules. The material is free from solvent and exhibits a stress of 2.0 MPa or below at 50% strain.
摘要:
An actuator includes a spirally rolled cylindrical sheet body. The sheet body is formed by attaching an electrode on each side of a dielectric elastomer layer. When a voltage is applied to the electrodes, the sheet body is contracted along the direction of its thickness, and expanded in directions perpendicular to its thickness. The actuator is actuated by applying a voltage to the electrodes and stopping the voltage application, so that the cylindrical sheet body is extended and contracted along the direction of the axis. The material forming the dielectric elastomer layer has a low strain region, where the value of a strain based on a stress acting on the dielectric elastomer layer varies from zero to a value that is greater than and close to zero, and a high strain region, where the value of the strain is greater than that in the low strain region. The Young's modulus in the low strain region is less than the Young's modulus in the high strain region.
摘要:
An actuator includes a spirally rolled cylindrical sheet body. The sheet body is formed by attaching an electrode on each side of a dielectric elastomer layer. When a voltage is applied to the electrodes, the sheet body is contracted along the direction of its thickness, and expanded in directions perpendicular to its thickness. The actuator is actuated by applying a voltage to the electrodes and stopping the voltage application, so that the cylindrical sheet body is extended and contracted along the direction of the axis. The material forming the dielectric elastomer layer has a low strain region, where the value of a strain based on a stress acting on the dielectric elastomer layer varies from zero to a value that is greater than and close to zero, and a high strain region, where the value of the strain is greater than that in the low strain region. The Young's modulus in the low strain region is less than the Young's modulus in the high strain region.
摘要:
A motor driving amplifier and a numerical controller are connected to each other via communication to configure a numerical control system. The numerical controller includes a numerical control unit, a motor control unit, and an amplifier interface unit. Furthermore, a motor control processor included in the motor control unit is a multi-core processor.
摘要:
A control unit is proposed which makes it possible to prevent connection problems between a package box and a backboard and prevent damage to the connector of the backboard.The control unit comprises a unit cover in which a first package box, which comprises a predetermined function and on the rear side of which a first connector is provided, is inserted into the corresponding spatial area so as to move over a shelf from an open end [of the unit cover]; and a backboard which is disposed inside the unit cover and on which a second connector is provided in a position where the first package box, inserted in the corresponding spatial area, mates with the first connector, wherein the shelf is provided with a protrusion which rotatably supports the first package box in a fan direction.
摘要:
A lever type engagement connector includes a first connector; a second connector to be engaged with the first connector; and a lever including a connection portion at which the lever is jointed to the first connector, and an end portion at which the lever is jointed to the second connector so as to rotate from a first position to a second position, an operation portion which is provided at an opposite side of the end portion respective to the connection portion, and a lock portion which is provided between the operation portion and the first connector when the lever is at the first position and is engaged with the second connector when the lever is at a second position. Preferably, the operation portion defines a touching surface and the lock portion is provided below the touching surface.
摘要:
A method of folding together a vehicle side curtain airbag is provided that includes bending a base section of an extended air bag toward the outboard side of the vehicle and fully over onto a middle section of the air bag located directly above the base section. The adjacent base and middle sections are then rolled, as a group, by first moving a crease line between the base and middle sections toward the outboard side of the vehicle, then curling the crease line back toward the unrolled portion of the base and middle sections and then rolling the remainder of the unrolled portion of the base and middle sections. A top section of the airbag is collapsed in a pleated manner.
摘要:
A numerical control unit that facilitates centralized management of alarm information from a variety of elements in a machine tool cabinet. A relay that outputs a malfunction alarm signal, a battery that outputs a low voltage alarm signal, a fan motor that outputs an alarm signal indicating rotation stop or a drop in rpm and a status signal indicating the rpm, and a thermometer or the like that outputs a status signal expressing ambient temperature measurements are installed in a power managing unit in a control unit of the machine tool. Each element is equipped with a wireless communications tag that temporarily stores the alarm signal/status signal and emits a wireless signal. The numerical control unit receives the wireless signal through a receiving device, and displays information about the cause (originating location) of the alarm and activates a buzzer (or a speaker) when an alarm occurs. Status information is displayed continuously.
摘要:
A cellulose ester film and its manufacturing method are disclosed, the cellulose ester film comprising a compound represented by the following formula (1) in an amount of from 1 to 30% by weight, wherein Y represents an ester bond or a divalent organic group containing an ester bond, Ra and Rb independently represent a substituent, and m and n independently represent an integer of 0 to 5, provided that when m or n is not less than 2, plural Ras or Rbs may be the same or different.