在制造业的宏大图景中，有一个领域虽不常被公众所见，却如同精密钟表的核心齿轮，无声地驱动着众多高科技产业的进步。这便是微米级铣削加工的世界。在这里，加工精度的单位是微米

Five-axis machining centre, as the cutting-edge equipment of modern manufacturing industry, has become an indispensable and important tool in the fields of aviation, aerospace, military, scientific research and precision instruments with its high precision, high efficiency machining capability and ability to handle complex surfaces.

I. The Transformation of Welding Technology in the Industry 4.0 Era As the cornerstone of smart manufacturing, Industry 4.0 is propelling the manufacturing sector into a new era of digitalisation and intelligentisation through the Internet of Things (IoT), artificial intelligence (AI), big data analytics and robotics.