초록 ▼

The device comprises a sensor (2) which is connected to a movable housing (1) by an elastically deformable mechanism (4). The sensor and the housing are connected to an electric circuit (5) comprising: a capacitive amplifier producing a measurement pulse constituting a datum for a computer and an or

The device comprises a sensor (2) which is connected to a movable housing (1) by an elastically deformable mechanism (4). The sensor and the housing are connected to an electric circuit (5) comprising: a capacitive amplifier producing a measurement pulse constituting a datum for a computer and an order for the stopping of the displacement of the sensor when the latter comes into contact with a part to be measured which is mounted in insulated fashion on a measurement table, a short-circuiting device (17-18) producing a safety pulse which constitute an order for the stopping of this displacement in the event of deformation of the mechanism (4) as a result of the non-issuance of the measurement pulse. A measurement is thus taken with full safety without deformation of the linking mechanism and without the part to be measured having to be connected to the electric circuit.

대표청구항 ▼

A sensor device for a machine for measuring conductive parts mounted on a measurement table and comprising a housing intended to be fastened to a movable support of the machine, a measurement tip sensor integral with the housing and intended to sense a part to be measured by displacement of the mova

A sensor device for a machine for measuring conductive parts mounted on a measurement table and comprising a housing intended to be fastened to a movable support of the machine, a measurement tip sensor integral with the housing and intended to sense a part to be measured by displacement of the movable support, a mechanism for the three-dimensional linking of the sensor to the housing and capable of being deformed elastically when a given pressure of the tip of the sensor against the part to be measured is exceeded and an electric circuit influenced by contact of the tip of the sensor against the part to be measured so as to produce an electric pulse, characterized by the fact that the electric circuit (5) comprises a capacitive amplifier (25) which is connected to the tip (3) of the sensor (2) in order to precharge the latter to a given voltage and has electronic means (28, 29) sensitive to a displacement of charge between the tip of the sensor and the part to be measured so as to produce an electric measurement pulse which is indicative of the entrance into contact of the tip of the sensor with the part to be measured, an insulation of the part to be measured with respect to the measurement table, and a safety arrangement (17, 18) which is sensitive to the elastic deformation of the linkage mechanism so as to produce an electric safety pulse indicating a possible elastic deformation of said mechanism.