Abstract: A reception processing unit receives a user operation performed with respect to an operation tool that causes a work vehicle to execute a predetermined motion. A motion processing unit causes the work vehicle to execute a motion corresponding to the user operation performed with respect to the operation tool. A travel processing unit switches from autonomous travel to manual travel when a change amount relating to the operation tool corresponding to the user operation exceeds a threshold while the work vehicle is performing autonomous travel. A setting processing unit sets the threshold based on at least one of setting information and work information of the work vehicle.

Abstract: The washing nozzle for washing an inside of the machine tool with fluid includes a base portion having a tubular passage inside thereof, a supply port through the tubular passage, and a rotary member rotatable about an axis parallel to a surface on which the base portion is mounted, the rotary member having inside thereof a nozzle jet port and a nozzle flow passage allowing communication between the tubular passage and the nozzle jet port, wherein the jet port is formed so that fluid jetted from the jet port of the rotary member hits the surface on which the base portion is mounted and the jet of the fluid causes the rotary member to rotate about the parallel axis.

Abstract: The washing nozzle for washing an inside of the machine tool with fluid includes a base portion having a tubular passage inside thereof, a supply port through the tubular passage, and a rotary member rotatable about an axis parallel to a surface on which the base portion is mounted, the rotary member having inside thereof a nozzle jet port and a nozzle flow passage allowing communication between the tubular passage and the nozzle jet port, wherein the jet port is formed so that fluid jetted from the jet port of the rotary member hits the surface on which the base portion is mounted and the jet of the fluid causes the rotary member to rotate about the parallel axis.

Abstract: A computer system, comprising: a client computer; a server for providing the client computer with a service, a load balancer for transferring a packet transmitted from the client computer, a virtual machine that operates on the server, the virtual machine communicating another virtual machine by transmitting a packet including a virtual MAC address to be assigned to the virtual machine, virtual machine for providing a service being allocated to the client computer; and a management unit provided for each client computer, for monitoring a load of the virtual machine, and instructing one of addition and deletion of the virtual machine based on a monitoring result, the management unit being configured to: hold distribution information for distributing packets transmitted from the client computer; specify the server to which a new virtual machine is to be added, generate the virtual MAC address and the distribution information corresponding to the specified server.

Abstract: A communication system controls connection to the interface, such as an IP line to which a subscriber terminal connects, according to the information in the tables in which information is registered and updated, wherein the registered and updated information includes information as to which line type, ISDN line or analog line, is used and as to which high way (HW) of a time-division switch (TSW) of a media gateway (management device) is selected for providing TSs (timeslots) for use in the connection, as well as subscriber information on services for which a subscriber contracts.

Abstract: The present invention provides an apparatus provided with a turn driving device rotatable about an axis perpendicular to the plane of a pallet and also movable in the direction of the axis, a sliding device disposed on only the lower side of the pallet, and a push-up device having a first guide portion for causing the pallet normally separate from the sliding device to abut against the sliding device and further, guiding the direction of movement of the pallet, wherein during pallet exchange, the turn driving device turns the pallet on the sliding device and exchanges the pallet.

Abstract: In a pallet used in a conventional pallet exchanging apparatus, the side of a workpiece can be machined, but the upper surface of the workpiece cannot be machined. In this case, to machine the upper surface of the workpiece, the workpiece must be removed and great labor becomes necessary. This is solved by an L-shaped pallet base characterized in that provision is made of a first plate-like portion having female side clamps, and a second plate-like portion perpendicular to the first plate-like portion and having male side clamps. And the pallet is fixable by the female side clamps of the pallet being engaged with the male side clamps of the L-shaped pallet base, and the L-shaped pallet base becomes fixable onto a machining table by the female side clamps of the L-shaped pallet base and male side clamps disposed on the surface of the machining table being engaged with each other.

Abstract: In a pallet exchange apparatus according to the prior art, it has been necessary to raise two pallets to be exchanged and therefore, a load sufficient to raise the weight of the two pallets has been necessary. To raise and turn a heavy pallet, it is necessary to raise the pallet to a certain degree of height when flexure is taken into account. However, to raise the weighty pallet to that height, a considerably great load has been required.

Abstract: A spindle apparatus capable of exhibiting a good interchangeability of a tool holder without any necessity for managing a gap between an end surface of the tool holder and an end surface of a spindle shaft and, besides, obtaining a high tool holding rigidity. Small- and large-diameter portions are formed in the outer surface of the spindle shaft having a taper hole formed in the shaft end. A sleeve formed with a fluid passageway communicating with the outside is fitted, with interferences, to the outer surface thereof. On the other hand, a flange having a diameter larger than a taper shank is provided at a proximal portion of the taper shank of the tool holder. A fluid pressure is applied to the fluid passageway of the sleeve, thereby making the sleeve contact with the flange of the tool holder that is fitted to the spindle shaft. Thereafter, the sleeve is fixed to the spindle shaft by removing the fluid pressure, and the tool holder is supported with a high rigidity.