53results about How to "Reduce the amount of subsequent processing" patented technology

The invention discloses a hot-pressing forming method for an aluminum-alloy curved reinforcing rib plate. The method comprises the steps of 1, carrying out plane unfolding on the aluminum-alloy curved reinforcing rib plate; 2, preparing corresponding reinforcing ribs on the plate according to the positions of the reinforcing ribs in the plane unfolding diagram; 3, designing and processing a hot-pressing forming die of the aluminum-alloy curved reinforcing rib plate; 4, performing hot-pressing forming on the aluminum-alloy curved reinforcing rib plate; and 5, performing air inflation correction on the aluminum-alloy curved reinforcing rib plate. According to the method, the aluminum-alloy curved reinforcing rib plate is formed by adopting hot-pressing formation and air inflation correction combined technologies, the problem that the size precision and the profile precision of the parts are difficult to control in the conventional cold stamping or machining process is solved, the surface quality of the parts is improved, and the overweight problem in the casting process is avoided; firstly, hot-pressing forming is adopted so that resilience, wrinkling, cracking and other defects in the cold forming process can be effectively avoided; and then air inflation correction is adopted so that the size precision, the profile precision and the surface quality requirements of the parts can be guaranteed.

The invention relates to a clamp assembly which is used for quenching a workpiece and in particular relates to a spring-type quenching clamp assembly. The spring-type quenching clamp assembly comprises a rack, an outer sleeve, an inner sleeve, a limiting clamp and a clamping body, wherein the inner sleeve is arranged below the outer sleeve; a quenching oil hole is formed on the inner sleeve; the extending end of the inner sleeve is arranged on the inner part of the outer sleeve; an inclined surface structure which is fitted with the outer sleeve and the inner sleeve is arranged on a branch structure, respectively; an annular flange for supporting the limiting clamp is supported at the top end of the branch structure; a boss is arranged in the limiting clamp; the limiting clamp is supported by a bracket and arranged on the inner part of the inner sleeve; and the bracket is connected with a drive device. Compared with the prior art, the spring-type quenching clamp assembly has the advantages of reducing the deflection after quenching, reducing the subsequent processing amount and the processing amount of the early process, and reducing the cost; the spring-type quenching clamp assembly can be fitted to various associated equipment and can be used for realizing various working modes such as a continuous working mode, a single-step working mode, and the like; moreover, the optional range is large and the production efficiency is greatly improved; the limited-type quenching of the workpieces with different sizes can be realized by changing the clamping body; and the mould is simple and convenient to change.

The invention discloses a device and a method for utilizing molten metal deposition to form a thin wall structural member. The device comprises a metal wire and a wire feeding roller, a nozzle conducts x-y planar motion according to the section outline information of the thin wall structural member, meanwhile extrudes molten metal and controls the molten metal flow to enable the molten metal to be evenly deposited on a substrate, and the molten metal is quickly cooled to form the section outline of a thin wall part. After one layer is formed, the substrate descends for the height of a section layer to conduct deposition of the next layer, and the process is circulated to finally obtain a product prototype of the metal thin wall structural member. The device and method has the advantages of being high in machining flexibility, stable in product quality, small in heat affected zone, small in workpiece heat deformation and small in follow-up machining quantity, effectively improves manufacturing efficiency and performance of the thin wall structural member, greatly reduces manufacture cost and improves the batch production probability through the molten metal deposition method.

The invention relates to a forming mold and a preparation method of a ceramic-based composite material grid reinforcement component. The mold comprises a female mold, a male mold, a skin forming sliding block, a rib plate forming pressing strip and a rib plate forming sliding block. According to the technical scheme of the mold and the preparation method, uniform and sufficient forming pressure can be provided for a prepreg in the forming process; the prepreg can be greatly contracted in the thickness direction of a rib plate in the forming process; it is guaranteed that the component is uniformly pressed at all positions in the forming process, and the forming defects of the component are avoided, damage to fibers at the reinforcement structure caused by shearing of the prepreg through the mold in the forming process is avoided, the integral forming of the component is realized; and meanwhile, the forming position and the thickness of the grid rib plate are guaranteed through formingline by line, the forming quality of the component is effectively improved while the size of the component is ensured.

The invention provides a high power density substrate embedded with diamond copper and a preparation method thereof. The substrate body includes a diamond copper composite material part and a tungsten copper, molybdenum copper alloy or oxygen-free copper part. The alloy part is inlaid on the composite material or the composite material is inlaid on the alloy, the two parts are metallurgically bonded or welded together, and the vacuum pressure impregnation process can be used to directly form near-finish. The substrate has a higher thermal conductivity than alloy materials such as tungsten copper; the thermal expansion coefficient matches that of semiconductor materials; it is easy to machine and has better machinability than pure diamond copper materials; the relative mass is small and the price is moderate, which is convenient for popularization and use , can meet the heat dissipation requirements of high-power electronic devices, and solve the heat dissipation problem that restricts the development of electronic devices to high power and miniaturization.

The invention provides an integral formation method of an aluminum alloy thin-wall spherical head. The method comprises the following steps: step (1) calculating and selecting a plate material; step (2) designing a pre-forming blank material; step (3) designing and manufacturing a pre-forming mold and performing cold-drawing pre-formation; step (4) designing and manufacturing a super-plastic forming mold and performing super-plastic formation; step (5) cutting off remainders and then performing surface treatment. By adopting a cold-drawing pre-formation and super-plastic formation combined process to form the aluminum alloy thin-wall spherical head, the method disclosed by the invention has the advantages of solving the problem that the dimensional precision and the profile precision of this type of component are hard to control in general punching and machining, improving the surface quality of the component and preventing the problem of control on welding deformation after separate manufacturing; cold-drawing pre-formation is firstly adopted to effectively control partial reduction of the wall thickness so as to play an obvious weight reduction effect; super-plastic formation is adopted subsequently to effectively prevent generation of defects such as rebounding, wrinkling and cracking, so that the requirements on dimensional precision, profile precision and surface quality of the component are guaranteed.

The invention provides a method for forming a large-scale thin-walled ring with a complex curve section, which includes: dividing the ring model into N arc-shaped models along the circumference according to the model size of the ring; designing the thermoforming process part, and Design a thermoforming mold; determine the size of the required blank and blank it, and preform the blank circle obtained by blanking to prepare a circle preform; use a thermoforming mold to perform thermoforming on the circle preform to obtain a hot Forming process parts; remove the process margin of thermoforming process parts, and prepare arc-shaped parts; surface treat N arc-shaped parts; assemble N surface-treated arc-shaped parts, and weld them to obtain ring parts; weld The final ring is shaped. The present invention adopts sheet metal preforming + thermoforming + welding composite forming technology, and adopts the most suitable forming technology for different parts, so as to realize the precision forming of parts as a whole, which can effectively reduce the amount of subsequent processing, avoid subsequent manual shape correction, improve efficiency and reduce costs .

The invention belongs to the technical field of complex parts forming, and relates to a casting method of an impeller. The casting method of the pressure impeller provided by the present invention is based on the size of the pressure impeller product when manufacturing the pressure impeller casting mold. The edge face that is plane and not combined with the impeller hub is a plane hexahedron. The secondary blade of the impeller casting mold is a hexahedron capable of containing the secondary blade of the impeller product, the upper surface and the lower surface are plane, and the edge surface not combined with the hub of the impeller is a plane. The amount of follow-up processing required for the impeller casting obtained by the casting method of the impeller provided by the present invention is far less than the amount of follow-up processing required for the rotary body of the impeller directly forged, and the automatic demoulding of the mold can be realized, ensuring excellent Under the premise of high performance, the amount of subsequent machining can be reduced, and the cost of machining can be reduced.