An NC lathe includes an energization signal switching unit for switching an energization signal set for each electric device between an energization required state and an energization non-required state, a prohibition signal switching unit for switching an energization prohibition signal set for each electric device between a prohibited state and a permitted state, a signal determination unit that determines whether or not each electric device is in a power saving state in which the energization signal for the electric device is in the energization required state and the energization prohibition signal is in the prohibited state, and a saving calculation unit that determines a cumulative duration of the power saving state, computes a device-specific power saving for each electric device on the basis of the cumulative duration, and calculates a power saving by adding together the device-specific power savings.

An impact-absorbing pressure-sensitive adhesive sheet according to an embodiment of the present invention includes an impact-absorbing pressure-sensitive adhesive layer including an impact-absorbing layer. A side surface of the impact-absorbing pressure-sensitive adhesive layer includes a tapered surface; and the tapered surface has a taper angle of 65 or more.

A machining simulation apparatus includes a processor and a communication circuit. The processor is configured to set a position of a program origin, that is an origin on a machining simulation coordinate system of a numerically controlled lathe, based on a machine model origin on the machining simulation coordinate system, a jaw model that is a shape model of a plurality of jaws mounted on a chuck of the numerically controlled lathe, and a workpiece model that is a shape model of a workpiece to be gripped by the plurality of jaws. The machine model origin corresponds to a machine origin of the numerically controlled lathe. The processor is configured to execute the machining program using the program origin as a reference position to virtually machine the workpiece model. The communication circuit is configured to transmit data indicating the position of the program origin to the numerically controlled lathe.

A machining apparatus includes: a support mechanism that supports a workpiece; a cutting mechanism that cuts the workpiece that has been supported by the support mechanism; and a heat treatment mechanism that performs heat treatment on the workpiece that has been supported by the support mechanism. The heat treatment mechanism includes a coil that performs induction heating on the workpiece. The coil and the workpiece that has been supported by the support mechanism are movable relative to each other.

A machining apparatus includes: a support mechanism that supports a workpiece; a cutting mechanism that cuts the workpiece that has been supported by the support mechanism; and a heat treatment mechanism that performs heat treatment on the workpiece that has been supported by the support mechanism. The heat treatment mechanism includes a coil that performs induction heating on the workpiece. The coil and the workpiece that has been supported by the support mechanism are movable relative to each other.

A machining apparatus includes: a support mechanism that supports a workpiece; a cutting mechanism that cuts the workpiece that has been supported by the support mechanism; and a heat treatment mechanism that performs heat treatment on the workpiece that has been supported by the support mechanism. The heat treatment mechanism includes a coil that performs induction heating on the workpiece. The coil and the workpiece that has been supported by the support mechanism are movable relative to each other.

A machining apparatus includes: a support mechanism that supports a workpiece; a cutting mechanism that cuts the workpiece that has been supported by the support mechanism; and a heat treatment mechanism that performs heat treatment on the workpiece that has been supported by the support mechanism. The heat treatment mechanism includes a coil that performs induction heating on the workpiece. The coil and the workpiece that has been supported by the support mechanism are movable relative to each other.

A machining apparatus includes: a support mechanism that supports a workpiece; a cutting mechanism that cuts the workpiece that has been supported by the support mechanism; and a heat treatment mechanism that performs heat treatment on the workpiece that has been supported by the support mechanism. The heat treatment mechanism includes a coil that performs induction heating on the workpiece. The coil and the workpiece that has been supported by the support mechanism are movable relative to each other.

A machining apparatus includes: a support mechanism that supports a workpiece; a cutting mechanism that cuts the workpiece that has been supported by the support mechanism; and a heat treatment mechanism that performs heat treatment on the workpiece that has been supported by the support mechanism. The heat treatment mechanism includes a coil that performs induction heating on the workpiece. The coil and the workpiece that has been supported by the support mechanism are movable relative to each other.

A method for steady-state control of cutting state, implemented based on computer numerical control (CNC) machine tools or cutting lathes. The method comprises: fitting parameters of a stored energy evolution model of a workpiece material to be machined; discretizing primary shear zone into multiple infinitesimals along normal direction of main shear plane; introducing equivalent cutting edge model, inputting pre-used cutting parameters, calculating strain and strain rate of each infinitesimal and analyzing temperature of each infinitesimal; deducing and solving differential equation of each infinitesimal of stored energy to position of the primary shear zone by taking initial shear plane of the primary shear zone as model boundary; determining application values of cutting parameters according to solved results; and, controlling and adjusting the cutting tool in the actual cutting process to cut the workpiece material to be machined with the application values.