Dear Colleagues,

Precision machining technology is an advanced high-tech technology in modern machinery manufacturing. It introduces modern advanced technologies and is characterized as high-tech, modern, and intelligent. This technology needs to solve two problems: first, it must enhance machining accuracy in regard to form and position tolerance, dimensional accuracy, and surface condition. Second, it must improve process efficiency, as higher processing efficiency is sometimes difficult to achieve in conjunction with better machining accuracy. Precision machining includes micro-machining and ultra-micro machining, finishing, and other processing technologies and has been widely used in industrial robot manufacturing and machine tools and equipment. The continuous improvement of this technology is conducive to enterprises’ competitive advantages and industrial high-tech development. 

Additive manufacturing (AM), commonly known as 3D printing, is a manufacturing technology that integrates computer-aided design, material processing, and molding technologies and uses digital model files as its basis. It can manufacture solid objects by stacking special metal materials, non-metal materials, and medical biomaterials layer by layer, using methods such as extrusion, sintering, melting, light curing, spraying, etc., via software and numerical control systems. Additive manufacturing technology does not require traditional tools, fixtures, or multiple processing procedures and can quickly and accurately manufacture almost any complex shape parts on a single device, greatly reducing processing procedures and shortening the processing cycle. In recent years, metal additive manufacturing technology has been a hot topic at the forefront of international research, especially in areas such as additive equipment, additive manufacturing technology, the microstructure and properties of additive parts, etc. Furthermore, additive manufacturing technology is of great significance to the formation of personalized customized complex parts.

This Special Issue will focus on new ideas of precision machining methods and additive manufacturing technology. The topics discussed here will not only focus on various precision machining methods and their machining mechanisms, typical aspects machining accuracy and machining quality evaluation, and innovative new precision machining technologies but also on cutting-edge innovative research on various hot topics, such as the forming mechanisms of additive manufacturing materials, the microstructure and mechanical properties of additive manufacturing parts, and the additive manufacturing technology of new materials.

Dr. Xuelong Wen
Dr. Chongjun Wu
Dr. Chen Li
Dr. Guijian Xiao
Guest Editors

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• additive manufacturing
• precision machining
• machining mechanism
• machining accuracy
• surface quality