ISO 14649-12:2005规定了作为车削加工数据所需的特定于技术的数据元素。它与ISO 14649-10中描述的一般工艺数据一起，描述了计算机数控控制器与车削编程系统（即CAM系统或车间编程系统）之间的接口。 ISO 14649-12:2005中描述的车削模式的主题是表示车床车削操作的加工特征和过程的技术特定数据类型的定义。

ISO 14649-12:2005 specifies the technology-specific data elements needed as process data for turning. Together with the general process data described in ISO 14649-10, it describes the interface between a computerized numerical controller and the programming system (i.e. CAM system or shop floor programming system) for turning. The subject of the turning schema, which is described in ISO 14649-12:2005, is the definition of technology-specific data types representing machining features and processes for turning operations on lathes.