180 results about "Composite fabrication" patented technology

A mandrel assembly that includes an elongated hollow structure comprising a thermoplastic material that is extrudable having a first end and a second end. A first end cap attached to the first end. A vent tube attached to the first end cap, the vent tube extending from the first end cap. A second end cap attached to the second end. The mandrel assembly adapted to shape and form a composite structure in or outside an autoclave.

Boeing is actively engaged in the production of lightweight composite airframes for both military and commercial applications. The double bag vacuum infusion process of the present invention provides a low cost, method for producing complex composite assemblies without an autoclave. It also enables the production of highly innovative structures. The quality of the composites produced using such an infusion process are comparable to composites made using prepregs, hand layup or fiber placement and autoclave curing.

Advanced masonry coring systems for coring and grouting masonry walls are disclosed in this patent. The systems include rotating machinery and a drill column in the form of a cylindrical double-piped string of pipe sections, rotating a cylindrical drill body. The drill body mounts cutting end faces having alternative means of employing carbide or diamond cutting and / or pulverizing elements. The double drill pipe weight is made workable through new aerospace composite fabrication. The double pipe permits more efficient routing of air and removal of drill cuttings. Advancement in various system components and means of placing reinforcement into walls is disclosed. Further disclosure is included of advanced means of optimizing resin grouting materials and procedures to fill the wall cavities created by the core drill, integrating the reinforcement into the walls.

The invention relates to the field of additional and subtractive manufacturing, in particular to equipment for applying ultrasonic cutting to powder laying type additional and subtractive composite manufacturing and a machining method. A workbench is horizontally installed in the middle position of the front portion of a lathe bed. A molding cavity is formed in the workbench and can move up and down in the vertical direction. A base plate can be installed in the molding cavity. Additional and subtractive composite manufacturing is carried out on the base plate. A powder laying device is installed on the workbench and located at one end of the workbench. A laser generator and a laser screening system are fixed to the position over the front portion of the lathe bed. A powder supply device is located on the outer side of the lathe bed. A magazine tool is located on one side of the front portion of the lathe bed. A tool is installed in the magazine tool. A main shaft is installed on the front portion of the lathe body, and can slide along sliding rails in the X,Y and Z directions. During additional manufacturing, the main shaft is located at one end of the workbench. During subtractive machining, the main shaft moves to the position over the workbench. The tool is installed on the lower portion of the main shaft, and an ultrasonic cutting device is installed between the tool and the main shaft. A powder recycling device is arranged on the lower portion of the workbench.

The invention discloses an arc additive and laser-assisted thermoplastic forming composite manufacturing device and method. The arc additive and laser-assisted thermoplastic forming composite manufacturing device comprises a workbench and a base plate fixedly arranged on the workbench. A moving machine tool is arranged above the workbench; and an electric arc additive module and a plastic formingmodule which are connected to the moving machine tool are arranged above the base plate. The electric arc additive module comprises a welding gun and a wire feeder; the plastic forming module comprises a mechanism for carrying out plastic forming on a deposition layer on the surface of the base plate; a laser heating module for heating the deposition layer under the plastic forming mechanism is arranged at one side of the plastic forming module above the base plate; the laser heating module comprises a laser generator and a laser head connected with the laser generator through an optical fiber, the laser generator is connected with a stabilized voltage supply, the laser head comprises a housing, an optical fiber inlet is formed in one end of the housing, a laser outlet is formed in the other end of the housing, a collimating mirror and a focusing mirror are arranged in the housing, and the laser outlet faces the deposition layer under the plastic forming mechanism.

A ceramic matrix composite material is disclosed having non-oxide ceramic fibers, which are formed in a complex fiber architecture by conventional textile processes; a thin mechanically weak interphase material, which is coated on the fibers; and a non-oxide or oxide ceramic matrix, which is formed within the interstices of the interphase-coated fiber architecture. During composite fabrication or post treatment, the interphase is allowed to debond from the matrix while still adhering to the fibers, thereby providing enhanced oxidative durability and damage tolerance to the fibers and the composite material.

The invention discloses a mould melting-deposition forming and laser impact forging composite additive manufacturing method. The mould melting-deposition forming and laser impact forging composite additive manufacturing method comprises the following steps that (1) a mould blank body is cast; (2) the melting-deposition forming thickness is calculated; (3) metal powder is subjected to melting deposition through a heat source to form cladding layers, a controller controls a laser generator to conduct impact forging on a melting-deposition metal area at the plastic deformation temperature synchronously, the cladding layers are stacked layer by layer till the thickness of the cladding layers reach the thickness value in the step (2), and thus a workpiece is formed; and (4) the surface of the workpiece is treated. The invention further provides a mould melting-deposition forming and laser impact forging composite additive manufacturing device. The method adopts melting-deposition forming and laser impact forging composite manufacturing, melting-deposition forming and impact forging are conducted simultaneously, parameters are mutually coordinated and restrained in the process, thus, thermal stress, deformation and cracking can be avoided, the microstructure of a metal part is optimized, internal defects of pores, non-fusion, shrinkage porosity and the like are avoided, and the forming quality and efficiency of additive manufacturing of a metal mould are improved.

A composite fabrication apparatus (1) which may include a first tooling die (3) and a second tooling die (9) movable with respect to each other; a temperature control system (27) having induction coils (26) disposed in thermal contact with the first tooling die and the second tooling die; a first die susceptor (20) provided on the first tooling die and a second die susceptor (21) provided on the second tooling die and connected to the induction coils (26); and a cooling system (14) disposed in thermal contact with the first tooling die and the second tooling die. A resin transfer system (55) delivers resin from a resin source to the tooling dies to allow resin transfer molding. A composite fabrication method is also disclosed.

The invention is a compound making technique of automobile gear-box combined gear blanks, adopting finely forge-molding processing method. It heats the blank material to 1000-1200 deg.C, premolding the blank material on a hot mold forging press, after constant-temperature normalizing, eliminating oxide debris by impeller cleaning, and surface bonderizing and phosphatization, making cold-refining on tooth form, and finally making cone molding on the tooth by radial extruding method. It instantaneously completes hot mold forging premolding, refining, and cone molding on the press without cutting, saving material, saving labor, low-cost, high-efficiency, long-service life. The combined tooth root has no escrape, it has no stress concentration phenomenon and the tooth has high strength; the extrusion molding of the gear blank does not destroy metallic streamlines, it heightens the synthetic performance, the product quality is stable and can meet use and industrialized production requirements of top-grade autocars.

The invention relates to the field of material increase and removal manufacturing, in particular to equipment for applying ultrasonic cutting to powder feeding type material increase and removal composite manufacturing and a machining method. The equipment comprises a tool, a tool magazine, a main shaft, a lathe bed, a laser generator, a powder feeding device, a nozzle bracket, a base plate, a working table and a cladding spray head. The main shaft is installed on the upper portion of the lathe bed. In the material increase manufacturing process, the cladding spray head is installed on the lower portion of the main shaft. In the material removal machining process, the tool is installed on the lower portion of the main shaft, and an ultrasonic cutting device is installed between the main shaft and the tool. A cradle type working table capable of rotating around the horizontal axis and the vertical axis is installed on the portion, below the main shaft, of the lathe bed. The base plate is installed on the working table. Workpiece material increase composite manufacturing is carried out on the base plate. The nozzle bracket is installed on the lathe bed and located on one side of the main shaft working table. The nozzle bracket is used for storing the cladding spray head. The cladding spray head is connected with the external laser generator and the powder feeding device. The tool magazine is installed on the other side of the working table, and the tool is installed in the tool magazine. The equipment has the beneficial effects of being novel in structure, easy to machine, high in stability and applicable to various kinds of high-difficulty workpiece machining, prolonging the service life of the tool and improving workpiece machining precision.

The invention discloses a wire and arc additive and laser shock peening composited manufacturing device and method. The wire and arc additive and laser shock peening composited manufacturing device comprises a clamping device, a wire and arc additive manufacturing device, a laser shock peening device, a milling device, a constraint layer laying device, a temperature control system and a control system; and the control system is respectively and controllably connected with the wire and arc additive manufacturing device, the laser shock peening device, the milling device, the constraint layer laying device and the temperature control system. According to the wire and arc additive and laser shock peening composited manufacturing device and method, the wire and arc additive manufacturing device and the laser shock peening device are combined, so that reasonable structure design, simple operation and high applicability are achieved; and the uneven residual tensile stress caused by an even temperature field and a cooling contraction effect after forming in the manufacturing process of a wire and arc additive can be effectively eliminated, thick columnar crystal structures of components of the additive can be refined, and the microstructure and the mechanical property of the manufactured components of the additive can be further effectively improved.

The invention provides a laser melting deposition and laser shock strengthening combined manufacturing device. The device comprises a melting deposition system, a shock strengthening system and an online monitoring system which are connected by leads; the melting deposition system includes a melting laser device, a laser path assembly, a powder feeder, a melting deposition head and a three-dimensional processing platform; after being guided by the laser path assembly, a laser beam emitted from the melting laser device passes through the melting deposition head and reaches the three-dimensionalprocessing platform to form a laser spot; the shock strengthening system includes a shock strengthening laser device and a laser guide assembly; and the online monitoring system includes an online monitoring sensor and an information collection control system which are connected by leads. The combined manufacturing device can further overcome the problem of combined manufacturing of complex curved surface parts while solving the thermal stress problem in the process of laser melting deposition, and in addition, laser shock control is employed, the combined manufacturing device has the advantages of fast response, no contact, high controllability and the like.

The invention discloses a part additive composite manufacturing device and method. The part additive composite manufacturing device comprises a forming chamber, a controlling device, a laser melting mechanical arm, a laser shot blasting mechanical arm, a femtosecond laser transmitter and a forming cylinder, wherein the bottom face of an inner cavity of the forming chamber serves as a working tabletop, the top of the forming cylinder is connected with the bottom of the working table top, a bottom plate of the forming cylinder is connected with a first lifting device, the laser melting mechanical arm and the laser shot blasting mechanical arm are both arranged on the inner wall of the forming chamber, a laser melting nozzle is arranged at the tail end of the laser melting mechanical arm, alaser shot blasting nozzle is arranged at the tail end of the laser shot blasting mechanical arm, an electric linear reciprocating mechanism is arranged in the inner cavity of the forming chamber, thefemtosecond laser transmitter is connected to the electric linear reciprocating mechanism, and the movement direction of the electric linear reciprocating mechanism is parallel to the working table top. The effect that three machining devices do not affect one another is realized, the comprehensive performance of produced parts is greatly improved, and meanwhile secondary machining is avoided.

The present invention pertains to a combined machining equipment for steel tubes, and a machining method is of a small size, can easily be moved, and is capable of not only flaring a steel tube, but also grinding a flared surface, forming a groove, and peeling off a lining. A main shaft (121) is rotatably mounted on a slide frame (141) slidable with respect to a common mount (103), and a second machining head (124) is mounted on a flange on the distal end of the main shaft (121). An auxiliary shaft (131) is slidably disposed in the main shaft (121) for rotation therewith. A first machining head (134) is mounted on a mount base (132) on the distal end of the auxiliary shaft (131). When the main shaft (121) is rotated and moved back and forth and the auxiliary shaft (131) is moved back and forth with respect to the main shaft (121), the first machining head (134) spreads the tip end of a steel tube (110) held by a steel tube holding apparatus (102) to a first position, and the second machining head (124) spreads the tip end of the steel tube (110) to a predetermined flanged position, thus flaring the tip end of the steel tube (110).

A protective hybrid composite for a rotor blade is based on the use of tape cast ceramic layers densified by pre-ceramic polymer infiltration methods and laminated together with polymer matrix composite prepregs, with or without an embedded metallic mesh, to form a conforming helicopter blade cladding that is laminated to the blade surface for added erosion protection. The hybrid composite is fabricated to net shape and laminated to the blade using either an adhesive or a polymer composite prepreg inner layer. Installation is accomplished by a standard composite fabrication method of vacuum bagging the blade while the system is laminated to its surface. Repair methods based on removal of ceramic tiles is facilitated by incorporation of a metallic mesh element laminated beneath the ceramic tiles that can be used to heat the tile and decrease its adhesion strength.

A composite fabrication apparatus which may include a first tooling die and a second tooling die movable with respect to each other; a thermal control system having induction coils disposed in thermal contact with the first tooling die and the second tooling die; a first die susceptor provided on the first tooling die and a second die susceptor provided on the second tooling die and connected to the induction coils; and a cooling system disposed in thermal contact with the first tooling die and the second tooling die. A composite fabrication method is also disclosed.