Apparatus for monitoring the quality of the surface state of a part
AssigneeSociete d'Etudes et de Recherches de l'Ecole Nationale Superieure d'Arts et Metiers Seram
InventorsJacques Driviere, Jacques Bielle
Life of this patent
Estimating the term…
Abstract
The apparatus comprises an air flow duct having an end portion fitted inside a nozzle whose front surface is trued so that it can be applied against the surface to be scanned and so that it can co-operate therewith to form a leak through which air flows as a function of the surface state of the part, and further comprises measuring means for measuring the flow rate of air passing through the leak. At its trued front surface, the nozzle delimits an annular air flow duct, and the portion of the nozzle inside the annular air flow duct includes a duct connected to the atmosphere.
Claims10
Apparatus for monitoring the quality of the surface state of a part, said apparatus comprising an air flow duct having an end portion fitted inside a nozzle whose front surface is trued so that it can be applied against the surface to be scanned and so that it can co-operate therewith to form a leak through which air flows as a function of the surface state of the part, and further comprising measuring means for measuring the flow rate of air passing through the leak, wherein the nozzle delimits an annular air flow duct at its trued front surface, the portion of the nozzle inside the annular air flow duct including a duct connected to the atmosphere.
Apparatus for monitoring the quality of the surface state of a part, said apparatus comprising an air flow duct having an end portion fitted inside a nozzle whose front surface is trued so that it can be applied against the surface to be scanned and so that it can cooperate therewith to form a leak through which air flows as a function of the surface state of the part, a substantially cylindrical outer supporting body for supporting the nozzle, with the nozzle being coupled to the body by flexible resilient means which exert an application force on the nozzle urging the nozzle towards the surface to be inspected when the body is applied thereagainst, said flexible resilient means constituted by at least one elastically deformable diaphragm coupled between the nozzle and the outer support to delimit a gas-tight chamber in the support, which chamber includes connection means for connection to a compressed gas supply with said connection means passing through the wall of the support and measuring means for measuring the flow rate of air passing through the leak;
- wherein the nozzle delimits an annular air flow duct at its trued front surface, the portion of the nozzle inside the annular air flow duct including a duct connected to the atmosphere.
Apparatus for monitoring the quality of the surface state of a part, said apparatus comprising an air flow duct having an end portion fitted inside a nozzle whose front surface is trued so that it can be applied against the surface to be scanned and so that it can cooperate therewith to form a leak through which air flows as a function of the surface state of the part, and further comprising measuring means for measuring the flow rate of air passing through the leak, wherein the nozzle delimits an annular air flow duct at its trued front surface, the portion of the nozzle inside the air flow duct including a duct connected to the atmosphere and the annular duct including a portion which is of decreasing cross-sectional area in the air flow direction, and which is extended by an end portion of constant cross-sectional area.
Dependencies are inferred from the claim text.