Abstract:
The invention relates to a method for making a rivet (R), of the type comprising, by deformation of the material of a substantially cylindrical metal segment, the operations of preforming a milled head (100) at the end of a rod (200), characterised in that it comprises, by deformation of the material (cold stamping) the following operations: creating a portion with a lower diameter (210) from the free end; creating a substantially cylindrical hollow core (220) for forming a tubular portion; preforming the hollow core (220) as a truncated cone; performing the lower diameter outer surface as a truncated cone. The invention also relates to the rivet obtained by said method.
Abstract:
The invention relates to a method for making a rivet (R), of the type comprising, by deformation of the material of a substantially cylindrical metal segment, the operations of preforming a milled head (100) at the end of a rod (200), characterised in that it comprises, by deformation of the material (cold stamping) the following operations: creating a portion with a lower diameter (210) from the free end; creating a substantially cylindrical hollow core (220) for forming a tubular portion; preforming the hollow core (220) as a truncated cone; performing the lower diameter outer surface as a truncated cone. The invention also relates to the rivet obtained by said method.
Abstract:
The invention relates to a process for assembling materials by means of a riveting member of the type comprising a mandrel (2) and a sleeve (1). The sleeve (1) is provided with a peripheral recess on its external surface, in particular a groove (5), for forming a bending zone, while the mandrel has a head (9) able to deform the tubular end of the sleeve and to fold it back at the level of its bending zone. During riveting, the peripheral recess of the sleeve preserves the starting point of the countersink of the material against any stress and the bending zone of the sleeve permits providing a bearing surface of great dimension applied precisely against the materials.
Abstract:
A semi-tubular or tubular rivet for joining soft or fragile parts such as composite materials and comprising a pre-formed head (1) and a shank (2) having an axial hole (3) forming a tubular portion (2b) opposite the head (1), a peripheral groove (4) on the outside of the shank (2) at the tubular portion (2b), a pinning surface (Sa) on the outside surface of the shank near the free end of the shank; and a process particularly suited for assembling materials using the rivet.
Abstract:
The invention relates to a riveting element (R) for riveting parts which are made from composite materials (M1 and M2) and provided with a through-hole. The invention is characterized in that it consists of: a hollow bushing (200) including, at one end, a head (210) bearing on the surface of one of the parts to be assembled and a hollow rod (220); and a semi-tubular insert (100) including a first end (110) capable of being inserted into the hollow part of the bushing (200) and an open end (130) capable of deforming in order to form an enlarged base that bears on the surface of the other part that is to be assembled once the insert (100) is translatably locked inside the bushing (200). The invention also relates to the installation tool configured for one such element.
Abstract:
The invention concerns a manufacturing method requiring precise positioning of fixing components relative to another receiving component designed to receive same, the positioning being carried out by means of an equipment provided therefor, characterized in that it consists in measuring the components designed to be positioned to ascertain the tolerance curve (C) of said components and in modifying the settings of the positioning equipment such that the curve (C) for dimensioning the components is in the middle of the positioning tolerance zone. The invention also concerns an adapted software product. The invention is useful for the statistical control of processes in particular for piercing/riveting processes.
Abstract:
The invention relates to a device (D) for dispensing parts (R), e.g. rivets, which are delivered at the outlet of a storage means such as a vibrating bowl (100), said outlet (110) comprising a displacement path for the parts (R). The inventive device is characterized in that it comprises: a command unit (200) which authorises the individual passage of parts (R) being delivered by the storage and dispensing means (100) into a conduit (C), a control unit (300) which orients each part (R) passing through the conduit (C), and a suction means which is intended to drive the already-moving parts (R) individually into the conduit by accelerating the part (R) which is most affected by the vacuum. The invention also relates to the corresponding operating method and to the vibrating bowl which is adapted to one such device. The invention is suitable for dispensing parts such as rivets.
Abstract:
The invention relates to a blind riveting member of the type comprising a tubular sleeve (1) and a mandrel (2) passing through said sleeve. The stem portion (5) of the tubular sleeve (1) comprises successively along its length, a first articulation zone (5a), an inclined portion (5b), a second articulation zone (5c) and an end portion (5d). These zones or portions are arranged in such a manner that the sleeve is subjected to a double folding during setting of the rivet which causes the inclined portion to expand and fold back upon itself toward the materials being assembled, forming a continuous rest surface at the periphery of the hole which contains the riveting member. The invention is applied in particular for assembling fragile materials such as composite materials. It permits providing a good vibration resistant holding for these materials without risk of damaging the same.
Abstract:
The invention relates to a riveting element (R) for riveting parts which are made from composite materials (M1 and M2) and provided with a through-hole. The invention is characterized in that it consists of: a hollow bushing (200) including, at one end, a head (210) bearing on the surface of one of the parts to be assembled and a hollow rod (220); and a semi-tubular insert (100) including a first end (110) capable of being inserted into the hollow part of the bushing (200) and an open end (130) capable of deforming in order to form an enlarged base that bears on the surface of the other part that is to be assembled once the insert (100) is translatably locked inside the bushing (200). The invention also relates to the installation tool configured for one such element.
Abstract:
Disclosed is a system of displacing a plurality of parts to be stocked and distributed, each part defining a first end and a second end. The system comprises a conduit, the conduit defining an interior to house an actuation fluid, an axis of displacement in the interior, and an interior surface; and a plurality of devices. Each device includes a periphery configured to contact the interior surface of the conduit and to move along the interior surface, a device first surface approximately perpendicular to the axis of displacement, the device first surface being subject to a pressure of the actuation fluid thereby subjecting the device to displacement in the conduit, a first device-end shaped to receive the first end of a corresponding first part in the plurality of parts, and a second device-end shaped to receive the second end of a corresponding second part in the plurality of parts. The second device-end defines a recess including a bottom surface intersected by the axis of displacement, the recess being configured to center the corresponding second part in the conduit. The device is positioned between the corresponding first part and the corresponding second part in the conduit.