In a spindle device, a cover member covers a surface of a flange portion on the front side of the spindle shaft, the flange portion projecting radially outward from the outer peripheral surface of the spindle housing, and the outer peripheral surface of the spindle housing extending from the surface of the flange portion toward the front of the spindle shaft. In the cover member, a flow path for allowing a coolant to flow therethrough is formed.

A regeneration device for regenerating a coolant dispersion with phase change material includes: a redispersion unit for redispersing the coolant dispersion, the redispersion unit including a restrictor; and a recooling unit that enables freezing of a phase change material by dissipating heat stored in the coolant dispersion. The recooling unit is arranged so that dissipated heat is at least partially recuperated in order to heat up the coolant dispersion to an inlet temperature.

A spindle device includes a spindle housing, a spindle shaft rotatably supported inside the spindle housing, a spindle mount having an insertion cavity into which the spindle housing is inserted along the axial direction of the spindle shaft, and a mount cover covering the spindle mount. A temperature regulator for adjusting the temperature inside the mount cover is provided inside the mount cover.

In a temperature estimation method, a rotational speed of a spindle is acquired. Moreover, a temperature rise table and a temperature fall table are used to calculate a temperature of a bearing from the rotational speed of the spindle every time a fixed time elapses. The temperature rise table stores in an associated manner the rotational speed of the spindle and a temperature rise of the bearing due to rotation of the spindle in a predetermined fixed time. The temperature fall table stores in an associated manner the temperature of the bearing and a temperature fall of the bearing due to heat dissipation in the fixed time.

An operation panel for a machine tool includes: a blower device that includes a plurality of blade sections and a center axis section, the plurality of blade sections rotating around a center axis, the center axis section having a circular columnar shape around the center axis and being disposed on a radial-directional inside about the center axis relative to the plurality of blade sections the blower device sucking air in an axial direction about the center axis and blowing out the air in the axial direction about the center axis an opposed wall that is disposed on an air suction side of the blower device and that is disposed so as to face the blower device in the axial direction about the center axis; and an intermediate member that is provided between the opposed wall and the center axis section in the axial direction about the center axis.

An operation panel for a machine tool includes: a blower device that includes a plurality of blade sections and a center axis section, the plurality of blade sections rotating around a center axis, the center axis section having a circular columnar shape around the center axis and being disposed on a radial-directional inside about the center axis relative to the plurality of blade sections the blower device sucking air in an axial direction about the center axis and blowing out the air in the axial direction about the center axis an opposed wall that is disposed on an air suction side of the blower device and that is disposed so as to face the blower device in the axial direction about the center axis; and an intermediate member that is provided between the opposed wall and the center axis section in the axial direction about the center axis.

A core support system includes a support structure. The support structure includes a frame and a support member having a saturatable engagement layer disposed over the frame. A method of machining a core material incudes applying a fluid to an engagement layer of a support structure and saturating the engagement layer with the fluid, disposing a core material on the engagement layer, causing the fluid to freeze to secure to the core material to the support structure, machining the core material, melting the frozen fluid to release the core material from the support structure, and removing the core material from the engagement layer.

A motor controller comprises: a motor driver arranged at a housing attached to a machine support; fan motors and arranged in or outside the housing; and a control unit. The motor driver drives motors. The fan motors blow cooling air for cooling the interior of the housing. The CPU includes a machining mode selection unit allowing selection of at least either a first machining mode of machining a machining target finely or a second machining mode of machining the machining target more roughly than in the first machining mode. If the first machining mode is selected, the machining mode selection unit exerts control to change the rotation numbers of the fan motors and so as to reduce vibration to be transmitted from the housing to the support column.

A motor controller comprises: a motor driver arranged at a housing attached to a machine support; fan motors and arranged in or outside the housing; and a control unit. The motor driver drives motors. The fan motors blow cooling air for cooling the interior of the housing. The CPU includes a machining mode selection unit allowing selection of at least either a first machining mode of machining a machining target finely or a second machining mode of machining the machining target more roughly than in the first machining mode. If the first machining mode is selected, the machining mode selection unit exerts control to change the rotation numbers of the fan motors and so as to reduce vibration to be transmitted from the housing to the support column.

A thermal system may comprise a reservoir, a first fluid flowpath, and a second fluid flowpath. The first fluid flowpath may start at the reservoir and return to the reservoir. The first fluid flowpath may comprise, in a direction of the fluid flow, a first side of a sub-cooler, a liquid pump, a first side of a pre-heater, and a first side of an evaporator. The second fluid flowpath may start at the reservoir and return to the reservoir. The second fluid flowpath may comprise, in a direction of a fluid flow, a pressure regulator, a vapor compressor, a first side of a condenser, and an expansion value.