Abstract: Soaking apparatus to treat materials which require higher accuracy in soaking and improved cleanliness. The soaking apparatus includes a heat treatment apparatus having walls, a ceiling and a floor, each divided into a plurality of sections, a heater block mounted on each section, a thermal sensor mounted to each heater block, and a thermal controller to control heating of the heater blocks based on a temperature measured by the thermal sensor.

Abstract: Provided is a soaking apparatus to treat materials which require higher accuracy in soaking and improved cleanliness. The soaking apparatus to soak a material 12 to be treated is provided with a heat treatment apparatus 14 having walls, a ceiling and a floor, each of the walls, the ceiling and the floor of the heat treatment apparatus 14 being divided into a plurality of sections, a heater block mounted on each of the sections, a thermal sensor 11 mounted to the heater block, and a thermal controller 13 to control heating of the heater block based on a temperature measured by the thermal sensor 11.

Abstract: A preload measuring apparatus to measure the preload of a rolling bearing that includes a bearing support, a pressurization device, an excitation device, a vibration sensor, and a control section. The bearing support supports a rolling bearing by supporting both ends of a shaft inserted into an inner ring of the rolling bearing. The pressurization device loads a predetermined weight in the axial direction onto the rolling bearing. The excitation device applies vibration onto the rolling bearing by the drive of the piezoelectric elements. The vibration sensor detects the vibration generated on the rolling bearing by the vibration application of the excitation device. The control section operates the excitation device in the situation that the pressurization device presses the rolling bearing, and obtains the resonance frequency by the output signal from the vibration sensor and calculates the preload of the rolling bearing according to the obtained resonance frequency before the predetermined weight as loaded.

Abstract: A moving table assembly has a base, a table supported by the base for movement in one direction, a feed screw having its axis parallel to the direction of movement of the table, a nut threadably engaged with the feed screw, and a connecting mechanism for connecting the table and the nut, the connecting mechanism comprising a first connecting portion for transmitting the axial displacement of the nut to the table and a second connecting portion for preventing the nut from rotating relative to the axis of the feed screw, the first connecting portion being provided with a guide member having a pair of guide surfaces provided on one of the table and the nut in orthogonal relationship with the axis of the feed screw, two support shafts corresponding to the guide surfaces respectively and secured to the other of the table and the nut, and two arms rockably provided on the support shafts respectively and having at the opposite ends thereof rotatable rollers engaging the guide surfaces, the rollers being pressed agai