48results about How to "Precision manufacturing" patented technology

A vent stringer 20 is formed by a pair of ribs 21 rising in the direction perpendicular to an inner surface 11a of a wing panel 11, and a cover 22 provided in the tip end portions of the ribs 21. With rivets 23 unexposed to an outer surface 11b of the wing panel 11, a spark is prevented from occurring in a fuel tank 30, which is provided in a main wing 10, through the rivet 23 at the time of a lightning strike. Formed by being machined integrally with the wing panel 11, the rib 21 is formed with high accuracy so as to match the curved shape of the wing panel 11. The cover 22 has only to be formed by curving a strap member so as to match the shapes of the wing panel 11 and the ribs 21.

A hair clipper has a base housing, a secondary housing cover, and a rotary motor or vibrator motor secured between the base housing and the housing cover. The rotary motor has a shaft and a cam secured to an end of the shaft, and the vibrator motor has a drive arm with a drive finger. A cam follower is operably connected to the cam or drive finger on a top side. The top side of the cam follower also has an elongated guide rail that is operably secured to a guide channel in a blade guide, which in turn is secured to the base housing. A reciprocating blade is operably secured to the bottom side of the cam follower, and a stationary blade is secured to the base housing adjacent the reciprocating blade.

The invention discloses a preparation method of high-melting-point high-entropy alloy spherical powder based on laser additive manufacturing. Five or five kinds of high-melting point metal elemental powders are randomly selected from tungsten, titanium, zirconium, hafnium, vanadium, niobium, tantalum and molybdenum. more than one species and mixed according to a certain ratio; then use a high-energy ball mill for mechanical alloying to obtain a single-phase solid solution powder of a high-melting-point high-entropy alloy; use a hot isostatic pressing process to form a standard powder-making bar; finally use an electrode induction to melt the gas mist The laser direct forming powder is prepared by chemical process; the high melting point high entropy alloy single-phase solid solution powder formed by the present invention can solve the problem of different burning loss rates of different elements caused by the large difference in melting point in the process of laser additive manufacturing of high melting point metal single substance powder And a series of problems such as composition microsegregation and negative eutectic caused by multiple elements can more effectively realize the rapid and precise manufacturing of high-temperature and wear-resistant aerospace special parts and high-performance turbine engine hot-end parts.

The invention discloses a recoverable and deformable energy-absorbing box for automobiles based on additive manufacturing, which comprises an upper end cover, a filling structure, a thin-walled shell, a mounting plate and a thin-walled corrugated pipe, the bottom of the thin-walled shell is provided with a mounting plate, and the mounting plate There are several installation holes on the top, the filling structure is set inside the thin-walled shell, the thin-walled bellows is set inside the filling structure, and the upper end cover is set on the top of the thin-walled shell; the thin-walled shell is detachable from the anti-collision beam of the car through the mounting holes The connection, filling structure, thin-walled shell and thin-walled bellows are integrally printed and formed of high-entropy alloy materials; the invention has excellent energy absorption characteristics, and the filling structure proposed by the invention is a regular hexahedron in which the four sides of the two opposite faces are respectively It is connected with four other unit cell structures in different directions, which improves the energy absorption while improving the bearing capacity of the energy-absorbing box, so that it can maintain the stability and continuity of energy absorption, high bearing capacity, good stability, and can be reused. Reduce car maintenance costs.

The invention discloses an osteotomy orthopedic guide plate and its manufacturing method, and relates to the field of osteotomy assistant tool design and processing. The manufacturing method of the osteotomy orthopedic guide plate includes steps of building up a data model according to a CT three-dimensional data of a skeleton to be corrected, and accurately matching an osteotomy face built by the surface of the skeleton to be corrected with the osteotomy orthopedic guide plate, so that the osteotomy orthopedic guide plate after the 3D printing and shaping has the accurate and reliable guidance quality. Therefore, the manufacturing method of the osteotomy orthopedic guide plate can accurately and rapidly manufacture the osteotomy orthopedic guide plate in accordance with the operation requirements, help doctors to carry out individual customized design upon specific condition of patients, and realize the technical effects of accurate osteotomy and reliable orthopedic; moreover, the osteotomy orthopedic guide plate manufactured through the manufacturing method can make the practice of the osteotomy more scientific and safer because of its accurate and reliable guidance quality. Therefore, the osteotomy orthopedic guide plate and its manufacturing method have important value of popularization and application.