Classification of daily CNC lathe machining

(1) General CNC lathe machining. This type of CNC lathe processing, like traditional general-purpose lathe processing, has mechanical processing methods such as CNC turning, milling, boring, drilling, grinding, etc. The process possibilities of this type of CNC lathe processing are similar to those of general-purpose machine tools, but the difference is that it can process complex shaped parts.

(2) CNC lathe machining. This type of CNC lathe machining has developed on the basis of general CNC lathe machining. It is a type of CNC lathe with an automatic tool changing device (also known as a multi process CNC lathe or boring and milling machining center, commonly referred to as a machining center), which is composed of a tool magazine (which can accommodate more than 10-100 tools) and an automatic tool changing device installed on a general CNC lathe. This further promotes the development of CNC lathe machining towards automation and efficiency.

(3) Multi coordinate CNC lathe machining. Some complex shaped parts cannot be machined with a three coordinate CNC lathe, such as propellers and aircraft curved parts, which require a composite motion of three or more coordinates to produce the desired shape. So multi coordinate CNC lathe machining emerged, characterized by a large number of axes controlled by the CNC device and a complex lathe structure. The number of coordinate axes usually depends on the mechanical processing requirements of the machined parts.

2. Classify according to the motion trajectory of CNC lathes

(1) Point control CNC lathe machining. The CNC device used for this type of CNC lathe machining can only control the precise movement of the lathe's moving parts from one position to another, that is, only controlling the coordinate values of the end of the stroke, without any cutting during the movement process. The speed and route of movement between the two critical points depend on productivity. In order to achieve the highest possible productivity based on precise positioning, the movement between two related points is first quickly moved to a new position, and then slowed down by 1-3 levels to approach the positioning point slowly, ensuring its positioning accuracy.

CNC lathe

(2) Point position linear control CNC lathe machining. When processing with this type of CNC lathe, it is not only necessary to control the position between two related points, but also to control the movement speed and route between the two related points. Its route is generally composed of straight segments parallel to each axis. The difference between it and point controlled CNC lathe machining is that when the moving parts of the lathe move, it can perform cutting along a coordinate axis direction (usually cutting along a 45 ° diagonal line, but not along a straight line of any slope), and its auxiliary functions are more than those of point controlled CNC lathes, such as adding spindle speed control, cyclic feed machining, tool selection, and other functions.

(3) Contour control CNC lathe machining. The control device for this type of CNC lathe machining can continuously control two or more coordinate axes simultaneously. When processing, it is not only necessary to control the starting and ending points, but also to control the speed and position of each point throughout the entire processing process, so that the CNC lathe can process complex shaped parts that meet the requirements of the drawing. Its auxiliary functions are also relatively complete.