Abstract: A method is provided for monitoring a milling method for a milling machine provided with a milling tool comprising cutting teeth, the method including: determining measured values of a first parameter corresponding to a bending of the milling tool as a function of a second parameter corresponding to an angle of rotation of the milling tool in a rotating frame of reference of the milling tool and analyzing the measured values as a function of at least one monitoring criterion.

Abstract: The invention relates to a method for continuous production of a composite material profile by injection-pultrusion from at least one reinforcing fabric and at least one thermoplastic polymer having high fluidity, said method being characterized in that: i) said fabric is continuously pulled with a pulling speed of at least 0.4 m.min?1 in the course of said process; ii) the impregnation stage is performed by injection of a polymeric composition having high fluidity through the fabric; iii) the profile is then shaped with a specific thermal profile. The invention also relates to a profile obtained according to the method of the invention and a composite article comprising such a profile the curvature whereof may be modified in its curvature by bending and/or its profile by rotational molding.

Abstract: A sensor (1) for measuring a tightening force applied on a screw-assembly member (2). The measurement sensor includes a ring and an electronic device comprising a longitudinal support strip having two opposite ends. The support strip is installed on a flat surface of the ring. The electronic device (26) includes a first circuit capable of generating a signal representative of a tightening force applied in a tightening direction on one of the two opposing faces; a second circuit capable of generating a signal representative of the distance of the applied force from the center of the ring in a first direction perpendicular to the tightening direction; and a third circuit capable of generating another signal representative of the distance of the applied force from the center of the ring in a second direction perpendicular to the tightening direction.

Abstract: A screw assembly includes a longitudinal component (10) having two opposite ends and a threaded part (12; 42; 66) so that it can be connected by screwing to one of two elements (34). An elastically deformable member (18, 20; 48; 82) is adapted to be borne, in the axially compressed state, between one or other of the two opposite ends of the longitudinal component (10) and the other of the two elements. The assembly has a retaining device (30; 54; 84) so as to be able to keep the elastically deformable member (18, 20; 48; 82) in compression and so as to be able to release the elastically deformable member in the compressed state between the other of the two elements (32) and the one or the other of the two opposite ends.

Abstract: A unit for cutting thin films of synthetic material has a worktable and a cutting head. The cutting head has a shoe with a smooth bearing surface and a cutting member that can project from the smooth bearing surface. The smooth bearing surface is intended to be applied against the thin film of synthetic material, while the shoe is moved substantially parallel to the worktable so that it can cut the thin film of synthetic material. The worktable has a non-slip coating with a static coefficient of friction in relation to the synthetic material, while the smooth bearing surface has a dynamic coefficient of friction in relation to the synthetic material. The dynamic coefficient of friction is lower than the static coefficient of friction.

Abstract: A machining device including a framework, a transmission shaft and a drive mechanism including a rotation member for driving the shaft in rotation about its axis, a drive member in helical connection with the shaft to drive the translation thereof along its axis with a feed movement, according to the relative rotational speed of the rotation and drive members. The drive member is mounted with the ability to effect translational movement with respect to the framework along the axis and is positioned between the rotation member and an end for coupling of the shaft to a cutting tool, while an electromechanical actuator is mounted in a fixed frame of reference associated with the framework in front of the drive member to which it can be coupled in order to cause it to oscillate translationally so as to superpose an axial oscillation component with the feed movement.

Abstract: A method is provided for monitoring a milling method for a milling machine provided with a milling tool comprising cutting teeth, the method including: determining measured values of a first parameter corresponding to a bending of the milling tool as a function of a second parameter corresponding to an angle of rotation of the milling tool in a rotating frame of reference of the milling tool and analyzing the measured values as a function of at least one monitoring criterion.

Abstract: A machining device including a casing, a transmission shaft (3) and a drive mechanism (1) including a first gearing member (13) that is able to rotate the shaft about its axis (A), a second gearing member (17) that is in a helicoidal connection with the shaft in order to drive the shaft translationally along its axis in a feed movement, depending on the relative rotational speed of the first and second gearing members, and means for generating axial oscillations. The second gearing member (17) is able to move translationally along the axis (A) with respect to the casing, the means for generating axial oscillations including an electromechanical actuator (20) mounted at a fixed location, connected to the casing, and able to be coupled axially to the second gearing member (17) in order to make it oscillate translationally, so as to superimpose an axial oscillation component on said feed movement.

Abstract: The invention relates to a tool post of a machine tool, which tool post is capable of receiving a cutting insert for machining a component, characterised in that it comprises at least one sensor capable of determining a parameter representative of a cutting action between a component to be machined and a cutting insert, and a support housing (9) which is electrically connected to the sensor and comprises a battery (17) and a printed circuit board (19) supplied with current by said battery (17), wherein said printed circuit board (19) supports, at least partially, a radio transmission unit (11) and the housing (9) consists of a base (21) and a cover (23) which can be detached from one another, and in that the battery (17) is supported by the cover (23) and the printed circuit board (19) by the base (21) or vice versa.

Abstract: A driving cam for seaming a container includes a cam base, an annulus, a bar, and first and second load cells. The annulus is defined by an internal profile and an external profile and is formed with an active sector. The active sector has a first end and a second end and is defined by the internal profile and the external profile. The external profile for defining the active sector is formed with an ascending ramp at the first end and a descending ramp at the second end with a plateau located between the ascending ramp and the descending ramp. The internal profile for defining the active sector is formed with a first recess at the first end and a second recess at the second end with a flat inner face located between the first recess and the second recess. The bar is connected to the cam base and is located within the annulus below the active sector. The load cells are connected between the bar and the flat inner face adjacent to the recesses.

Abstract: The invention concerns an artificial heart capable of being wholly implanted including in a single-piece module (2) two independent ventricular chambers (22G, 22D) each provided with two orifices (11G, 11D, 12G, 12D) equipped with a valve for respectively releasing and pumping blood. The volume of each chamber (22G, 22D) is variable by means of a mobile membrane (17, 18) constituting a wall of the chamber (22G, 22D) and hydraulically actuated by a fluid driven by an actuator comprising a motor and a volumetric pump. The ventricular chambers (22G, 22D) are arranged so as to form an upside-down V, between whose branches are arranged the actuators and the space (37) for the actuating fluid. The chambers (22G, 22D) include on the outside convex walls (7G, 7D) the releasing and pumping orifices (11G, 11D, 12G, 12D).

Abstract: This device for characterization of the human skin consists of a tribometer 2,5,7,8 comprising a measuring arm 1 at the first end of which are mounted a measuring tip and a measuring sensor 3 capable of measuring a frictional force being exerted on the tip, and the second end of which is mounted in a support 2 enabling linear movement of the first end. An amplifier 7 and treatment means 8 and signal visualization means 9 are associated with the sensor.

Abstract: At the time of expansion and accompanying kinetic degradation of a flowing stream of fluid, the flow is stabilized by forming at least two contiguous flow streams which consist of the same fluid but have a different velocity distribution and the two streams are then mixed. When applying the method to a valve provided with a so-called "hemispherical" closure member for compressible fluids, subsonic discharge nozzles are formed by cutting recesses in the valve seat downstream of the zone in which the valve closure member bears on the valve seat in the closed position. The subsonic discharge nozzles are disposed in alternate sequence with supersonic discharge nozzles formed by the opposite surfaces of the valve closure member and of the valve seat outside the recesses. When the method is applied to a multi-bore pressure reducer for compressible gases, a pressure-reducing plate is provided with low-discharge ducts in adjacent relation to high-discharge ducts.

Abstract: The transducer comprises a piezoelectric double-layer plate, the movements of which, under the effect of electrical signals, directly control the flow from one or two spray nozzles. The plate is mounted in a floating manner, without any fastening, between fixed supports of the knuckle-type which do not impede the free deformation (flexion or bending) of the plate. The invention makes it possible to increase the "signal-voltage/movement" ratio of the plate and reduce the hysteresis to obtain greater accuracy and reliability of response.

Abstract: The surface of a first fixed member (2) having at least one hydraulic-fluid passage (12, 18) is in contact with the surface of a second movable member (4) controlled by an actuating system (28, 30) and having at least one shut-off zone (6) and at least one recess (20) forming a zone exposing the said passage; at least one of the passages consists of a plurality of nozzles (12) which are pierced in the first member and are at a distance from one another and which are arranged on at least one track (14) directed parallel to the relative movement of the two members; the said actuating system is a step-by-step system driving the movable member in increments of a value d; the recesses (20) and the shut-off zones (6) on the second member are such that the said nozzles are exposed or shut off in turn at each advance of the movable member (4) by an increment d.

Abstract: At the time of expansion and accompanying kinetic degradation of a flowing stream of fluid, the flow is stabilized by forming at least two contiguous flow streams which consist of the same fluid but have a different velocity distribution and the two streams are then mixed. When applying the method to a valve provided with a so-called "hemispherical" closure member for compressible fluids, subsonic discharge nozzles are formed by cutting recesses in the valve seat downstream of the zone in which the valve closure member bears on the valve seat in the closed position. The subsonic discharge nozzles are disposed in alternate sequence with supersonic discharge nozzles formed by the opposite surfaces of the valve closure member and of the valve seat outside the recesses. When the method is applied to a multi-bore pressure reducer for compressible gases, a pressure-reducing plate is provided with low-discharge ducts in adjacent relation to high-discharge ducts.

Abstract: In order to attain the maximum permissible speed of a stepping motor and to achieve a substantial reduction in the time required to perform a predetermined number of steps, acceleration between the starting speed V.sub.o and the maximum speed V.sub.m takes place in the form of incremental increases .DELTA.V.sub.n in the frequency of the signal for controlling the speed of the motor at time intervals .DELTA.t which are all equal. All the speeds V.sub.n-1 +.DELTA.V.sub.n are precomputed by a microprocessor and the precomputed values are stored in memory. These values are read at each instant t+.DELTA.t during the acceleration period and in the reverse order with respect to the deceleration period. The curve velocity V is a function of time t is of exponential form with a negative exponent.

Abstract: A ball and socket joint for use in mechanical linkages, especially for ball-ended connecting rods in a multi-cylinder hydraulic pump comprises a ball head forcibly inserted into a socket which extends over more than a hemisphere and which is formed as a cylindrical seating member. Radial slits around the mouth of the socket allow the necessary distortion and then the mouth of the socket is squeezed and held by a hoop or ring or counter-plates, and the seating member is inserted in a cylindrical recess in a further component.

Abstract: An automatic tapping device for use on a mechanical press including a screw member fixed rigidly to and extending from the upper surface of a lower block and a reversible actuating nut engaged on the screw and a rotary tapping-bit holder spindle rotatably mounted in an upper block. The actuating nut and the rotary tapping-bit holder are interconnected by a chain transmission, including gear wheels borne by an intermediate shaft. The invention is applicable to the tapping of parts on mechanical presses, such as eccentric stamping presses or deep-drawing presses.

Abstract: The invention relates to the soldering industry. The device comprises a frame supporting a crucible for a bath of molten filler metal, the bottom of the crucible being traversed in fluid-tight manner by a sonotrode sliding under the action of a jack fixed to the frame. An ultrasonic energy generator is associated with the sonotrode and controlled heating means are associated with the crucible. The active end of the sonotrode has a recess with at least one impression of a shape complementary with at least a portion of the outer surface of the parts to be soldered. The jack moves said active end alternately in and out of the bath. The invention is particularly useful for the soldering of aluminum tube cross-heads for heat exchangers.