ABSTRACT
For machining a part surface, a machine tool, a cutting tool, a fixturing, and so forth are necessary. All these elements together are referred to as the technological system. For lubrication and for cooling purposes, liquids and gas substances are often used. The coolants and the lubricants create the technological environment. When a surface machining process is designed properly, then capabilities of both the technological system and of the technological environment are used most completely. When capabilities of the technological system and of the technological environment are used the most completely, manufacturing processes of this kind are usually called the extremal manufacturing processes. Ultimately, use of the extremal manufacturing processes results in the most economical machining of part surfaces.
