PURPOSE:To obtain high toughness and hard ceramic tool by providing a very hard coating layer of such as TiC, TiN on the surface of a base material made of a predetermined ceramic sintered body having sufficient strength and toughness. CONSTITUTION:This ceramic tool is made by forming a coating layer of TiC, TiN, TiCN, Al2O3 or AlON, or combination of them on the surface of a base material made of...

PURPOSE:To enable a compact tool in small diameter to be manufactured, by inserting a thin plate, formed by longitudinally cutting a compact blank made of diamond or CBN, to be brazed into a split provided in a shank and forming an edge on the thin plate protruded from the shank. CONSTITUTION:A shank 21 made of cemented carbide alloy forms its diameter a little smaller than the nominal size of a d...

An industrial robot device is disclosed which is equipped at a forward end of an arm with a work tool such as a cutting or a grinding tool, and in which there is provided a device such as a friction damper for suppressing sudden movement of the work tool in the direction of the normal displacement thereof towards and away from a workpiece. Damage to the work tool and workpiece due, for instance, t...

In a vibration suppressing device in a feed screw mechanism including a screw shaft rotatably supported on the base bed, and a nut mounted on a movable member fitted on the screw shaft and movable while being guided along the base bed, vibration suppressing means is mounted at a predetermined location on the screw shaft so as to suppress vibration in a radial direction created in the screw shaft d...

PURPOSE:To detect the anomaly of a machine at an early stage by comparing the change, with the passage of time, of the temperature difference between the air temperature and the oil temperature at the prescribed time, with the change of the temperature difference between the air temperature and the oil temperature which are memorized in the normal operation and detecting the anomaly of the machine...

PURPOSE:To permit automatic selection of tools by previously memorizing the share-point width of each groove cutting tool and selecting the tool having the max. share-point width among the tools having the share-point width less than the max. groove width among the groove parts having a specified part shape. CONSTITUTION:For each tool, a memory 201 having tool No., the designation of the working p...