Mitsubishi Heavy Industries Limited

Noritaka Fujimura

Kenichiro Hirao

Tsugumaru Yamashita

Provided is a tool tight-contact-state detector for a machine tool which is capable of accurately and stably detecting whether or not a tool or a tool holder having the tool attached thereto is mounted to a main spindle in tight contact therewith. While rotation of a main spindle () is stopped, hydraulic pressure is supplied from a hydraulic pressure supply unit () to a cylinder section () so as to bring a piston member () to into contact with a main spindle head () and the main spindle () against a biasing force from an O-ring (). Air is thereby allowed to be supplied to air ejection holes (), which are formed in a forward end face () of the main spindle (), from the main spindle head () side through the piston member (). Then, a judgment is made as to whether or not an end face () of a tool () and a forward end face () of the main spindle () are in tight contact therewith, on the basis of detection by air pressure detection sensors () regarding pressure variations in the air injected from the air ejection holes ().

Tool tight-contact-state detector for machine tool

Work line module comprises a plurality of machines (-) having a plurality of working functions and non-work facility () such as a conveying machine can cooperate so as to produce a necessary amount even if the necessary amount is varied. A plurality of work machines (-) for mechanically working a workpiece () and non-work facility () for processing the workpiece (). One work machine () is a multifunction furnishing machine having a function of measuring the workpiece () in addition to a function of mechanically working the workpiece (). A conveying machine () having robots (-) for conveying the workpiece () between the work machines (-), and between the work machines (-) and the non-work facility ().

Work line module and work facility

A measuring head is provided for an air micrometer which is capable of measuring an amount of eccentricity between a main spindle and a bush hole. A measuring head () includes a measuring-head body portion () and a measuring-head tip portion (), in which: a first measurement air nozzle (A) and a second measurement air nozzle (B) are each formed in the measuring-head tip portion to extend in a radial direction of the measuring-head tip portion, and also formed to have an angle of 180 degrees with respect to each other in a circumferential direction of the measuring-head tip portion; individual measurement air supply passages corresponding to the respective measurement air nozzles are formed in the measuring-head body portion; and measurement air is supplied to the measurement air nozzles from the individual measurement air supply passages, respectively.

Measuring head for air micrometer

The present invention aims to provide an air-micrometer calibration device capable of securely causing an axis of a measuring-head tip portion and an axis of a master hole to coincide with each other. To this end, the air-micrometer calibration device () includes a small-diameter master hole (); a large-diameter master hole (); and positioning means for causing an axis of the measuring-head tip portion and an axis of the small-diameter master hole to coincide with each other when a measuring-head tip portion () is inserted in the small-diameter master hole (), and for causing the axis of the measuring-head tip portion and an axis of the large-diameter master hole to coincide with each other when the measuring-head tip portion is inserted in the large-diameter master hole, where the positioning means includes: a pressure oil supply passage (); a clamping sleeve (); and a hydraulic pressure chamber () surrounding a periphery of the clamping sleeve, and the clamping sleeve clamps a measuring-head body portion () (a case ()) in association with a pressure of a pressure oil supplied from the pressure oil supply passage to the hydraulic pressure chamber.

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Ritto, Japan

Noritaka Fujimura