天堂草原高清在线观看电视剧,开会桌下把荫蒂添的好多水,中文无码亚洲色偷偷a片一百度,欧美另类videossexo潮喷,中文人妻精品一区在线,亚洲av综合色区手机无码一区,av经典动态高潮gif图,95久久久久精品无码一区二区,黑色丝袜脚足国产在线看

The bending of metal stamping parts is a processing method of bending flat plates, pipes, and profiles into workpieces with a certain angle or shape using molds or other tools. It is one of the basic stamping processes and occupies a large proportion in the production of metal stamping parts; There are various types of parts that are formed by bending, such as car beams, bicycle handlebars, door and window hinges, various electrical brackets, etc;

There are many curved shapes for metal stamping parts, including V-shaped parts, U-shaped parts, Z-shaped parts, O-shaped parts, and other shaped parts; The bending method varies depending on the equipment and mold used; Bending forming is usually carried out on mechanical presses (punches), friction presses, or hydraulic presses, as well as on specialized equipment such as bending machines, rolling machines, pipe bending machines, and tension bending machines;

The characteristic of bending on a press is that the tool moves in a straight line, known as bending; The bending forming on some specialized equipment, where the tool rotates, is called bending, rolling, or rolling