A new technology of forward extrusion and cross rolling has been developed to process the rear axle shaft sleeve of light truck with the use of tube billets. This technology is characterized by large reductions of mat...A new technology of forward extrusion and cross rolling has been developed to process the rear axle shaft sleeve of light truck with the use of tube billets. This technology is characterized by large reductions of material, energy and cost of production and has significant economical benefits. This technology is stable and reliable. The three rolls transverse rolling mill built based on this technology has novelty construction, higher production efficiency, non-vibration and noise. The research results have been extensively applied to light trucks and farm transport with load of 1 to 3 tones.展开更多
As night falls each day on Xiongan New Area, about 150 km south-west of Beijing, something amaz-ing happens: streetlights turn on automatically and adjust their brightness according to the number of pedestrians and ve...As night falls each day on Xiongan New Area, about 150 km south-west of Beijing, something amaz-ing happens: streetlights turn on automatically and adjust their brightness according to the number of pedestrians and vehicles around them at any given time. Passersby casually sit on the seats by the side of streetlight poles, where they can rest while charging their phones and accessing the free WiFi network. The streetlights are also equipped with a multifunction camera, enabling them to automatically collect and transmit trafc information.展开更多
In order to meet the rapid needs of processing square hole in mechanical equipment, the paper expounds the square hole processing method： planetary wheel method, and analyze the principle of tooling structure and pro...In order to meet the rapid needs of processing square hole in mechanical equipment, the paper expounds the square hole processing method： planetary wheel method, and analyze the principle of tooling structure and process with computer graphics parameters design. The results that, as long as the appropriate parameters, using the above method not only can punch the square hole, can also be processed triangle, the five angle and hexagonal regular polygon holes. The square hole processing method can provide theoretical basis and engineering reliable reference for related engineering and technical personnel.展开更多
文摘A new technology of forward extrusion and cross rolling has been developed to process the rear axle shaft sleeve of light truck with the use of tube billets. This technology is characterized by large reductions of material, energy and cost of production and has significant economical benefits. This technology is stable and reliable. The three rolls transverse rolling mill built based on this technology has novelty construction, higher production efficiency, non-vibration and noise. The research results have been extensively applied to light trucks and farm transport with load of 1 to 3 tones.
文摘As night falls each day on Xiongan New Area, about 150 km south-west of Beijing, something amaz-ing happens: streetlights turn on automatically and adjust their brightness according to the number of pedestrians and vehicles around them at any given time. Passersby casually sit on the seats by the side of streetlight poles, where they can rest while charging their phones and accessing the free WiFi network. The streetlights are also equipped with a multifunction camera, enabling them to automatically collect and transmit trafc information.
文摘In order to meet the rapid needs of processing square hole in mechanical equipment, the paper expounds the square hole processing method： planetary wheel method, and analyze the principle of tooling structure and process with computer graphics parameters design. The results that, as long as the appropriate parameters, using the above method not only can punch the square hole, can also be processed triangle, the five angle and hexagonal regular polygon holes. The square hole processing method can provide theoretical basis and engineering reliable reference for related engineering and technical personnel.
