联接结构是机械零件中的一个重要组成部分 ,机械结构中有多种多样的连接方式 ,有螺纹连接、焊接、粘接、铆接、磁连接、卡锁连接等。有些连接方式有连接件存在 ,比如螺纹连接和铆接 ;有些连接则不需要连接件 ,比如焊接 ;还有些方式则看情况 ,连接件可有可无 ,比如卡锁连接 ,有 Coupling structure is an important part of mechanical parts, there are a variety of mechanical structures in the connection, there are threaded connections, welding, bonding, riveting, magnetic connections, latch connections. Some connections have connectors, such as threaded connections and riveting; some connections do not require connectors, such as welding; there are some ways to look at the situation, the optional connector, such as the latch connection, there are