396 results about "Shearing (manufacturing)" patented technology

The invention relates to an unfolding method for a complex flange of a frame rib sheet metal part and belongs to the technical field of aircraft manufacturing. A digital manufacturing technology is adopted for dividing the flange of the frame rib sheet metal part into a bent area and a sunken area, respectively unfolding and then jointing and shearing, so that an unfolded outline of the flange is obtained. The unfolding problem of the frame rib sheet metal part with the complex flange is solved.

The invention discloses a high-performance environmentally-friendly copper-bismuth dual-metal bearing material and a manufacturing method thereof and aims to provide a high-performance environmentally-friendly copper-bismuth dual-metal bearing material without containing lead which is harmful to a human body and a manufacturing method thereof. The high-performance environmentally-friendly copper-bismuth dual-metal bearing material is prepared by sintering a steel plate and a copper-based alloy wear-resisting layer and is characterized in that the copper-based alloy wear-resisting layer comprises the following components in percentage by weight: 1%-3% of bismuth, 5%-11% of tin and the balance of copper. The manufacturing method comprises the steps of: shearing and blanking of the steel plate, inspecting, powder spreading, primary sintering, rolling, secondary sintering, rerolling, and finally obtaining the finished plate product of the high-performance environmentally-friendly copper-bismuth dual-metal bearing material. As the bismuth is used for replacing lead in the copper-based alloy, the high-performance environmentally-friendly copper-bismuth dual-metal bearing material does not contain lead, is non-hazardous to the human body, does not pollute the environment and is an environmentally-friendly copper-based-steel dual-metal bearing material. Simultaneously, when the content of bismuth is 1.0-3.0wt%, the best frictional wear resistance of the high-performance environmentally-friendly copper-based-steel dual-metal bearing material is achieved; in addition, as the density of bismuth is less than that of lead, the manufactured bearing material is lighter than that containing lead.

The invention belongs to the technical field of aluminum alloy machining and manufacturing, and relates to a 6082G aluminum alloy plate for rail transit and a machining technology thereof. The 6082G aluminum alloy plate is prepared from the following elemental components in percentage by weight: 0.9-1.2% of Si, 0.20-0.40% of Fe, less than or equal to 0.1% of Cu, 0.6-0.9% of Mn, 0.9-1.1% of Mg, 0.15-0.25% of Cr, less than or equal to 0.1% of Zn, 0.01-0.03% of Ti, less than or equal to 0.03% of single impurity, less than or equal to 0.10% of total impurity and the balance of Al. The machining technology includes the steps of batching, smelting casting, sawing and surface milling, homogenization heat treatment, hot rolling, shearing, solid solution treatment, stretching, aging, sawing and packaging. By strictly controlling the content of Fe, Mn, Cr in the machining process, the effect of inhibiting grain growth after welding is achieved through homogenization and solid solution treatment,a 6082G alloy with qualified cross-welding tensile properties for the rail transit is obtained, the mechanical properties of cross-welding tensioning of a vehicle body are improved, and the 6082G aluminum alloy plate can be widely applied to rail transit structural members.

The invention relates to a rock mass drilling and shearing elastic modulus instrument which mainly comprises a stopper rod port (1), a sleeve rod (2), an upper disc knife (3), a rubber bag (4) and a lower disc knife (5); and the whole structure of the rock mass drilling and shearing elastic modulus instrument is shaped like a long cylinder body. A hole wall rock mass shear test is carried out on different drilling positions under different positive stresses, and a destructive curve can be drawn by a rock mass shear destruction test structure under the different positive stresses, so that rock mass shearing-resistant mild parameters can be confirmed. The rock mass drilling and shearing elastic modulus instrument is simple in structure, low in manufacturing cost, easy to use and simple and easy to maintain and repair.

The invention relates to a processing technology of boards for solid wood furniture. The technology comprises the following steps of first, board drying, wherein drying treatment is carried out on theboards while the moisture content of the boards is controlled to range from 12.5% to 15.5%; second, balancing, wherein the dried boards stand for 3 days to 7 days; third, rough planing, wherein thickness unification is carried out on the boards obtained in the second step to form raw log boards; fourth, wind shearing, wherein each raw log board is adjusted to be 10 millimeters to 20 millimeters longer than the actually needed length; fifth, trimming, wherein raw edges and burrs on the surfaces of the raw log boards are removed; sixth, wide sanding and thickness unification, wherein rough sanding and polishing sanding are carried out on the raw log boards as required to form flat boards; seventh, accurate cutting, wherein width determination and width determination are carried out on the flat boards; eighth, groove making preparation, wherein a preset mortise processing equipment is started up; and ninth, mortise processing, wherein the mortise processing equipment is used to process the flat boards obtained in the seventh step to form mortises, and generated saw dust are collected. The processing technology of the boards for solid wood furniture has the advantages that the environment health can be guaranteed, and environment-friendly manufacturing is benefited.

The present invention relates to the field of zipper technology, in the concrete, it relates to a manufacture process of bidirectional metal zipper. Said manufacture process is implemented by utilizing a set of precisely-combined metal shearing and cold-punching die equipment on one machine. On said die equipment a point-making took, an edge-cutting tool and a cutting-off tool are mounted. Said invention utilizes said die equipment to make the metal elliptical wire material with specific specification undergo the processes of cold-punching extruding, normal-temperature forming in the model, positioning directional blanking and stepped processing treatment to obtain specific form. The adoption of said technological process only can use one machine to implement procedures for manufacturing single zipper and obtain zipper blank, then the cloth strip with zipper teeth can be fed into a traditional polishing machine to make high-speed polishing treatment, finally the cloth strip with zipper teeth is undergone the process of electroplating treatment, so that the zipper finished product can be obtained.