The machining characteristics of CNC machine tools:

1. High machining accuracy

Numerical control machine tools are processed according to digital commands. Currently, the pulse equivalent of numerical control machine tools generally reaches 0.001mm, and the directional clearance of the feed transmission chain and the screw pitch error can be compensated by the numerical control device. Therefore, numerical control machine tools can achieve high processing accuracy. For small and medium-sized numerical control machine tools, the positioning accuracy can generally reach 0.03mm, and the repeated positioning accuracy is 0.01mm. In addition, the transmission system and machine structure of numerical control machine tools have high rigidity and stability, high manufacturing accuracy, and the automatic processing method of numerical control machine tools avoids human interference factors. The size consistency of the same batch of parts is good, the product qualification rate is high, and the processing quality is very stable.

2. High production efficiency

The time required for workpiece processing includes maneuvering time and auxiliary time. CNC machine tools can effectively reduce these two parts of time. The adjustment range of spindle speed and feed rate of CNC machine tools is wider than that of ordinary machine tools. Therefore, the most favorable cutting amount can be selected for each process of CNC machine tools; Acceleration and deceleration measures are adopted from rapid movement to lifting, which not only improves the movement speed but also ensures positioning accuracy, effectively reducing the maneuvering time. When replacing workpieces with CNC equipment, there is no need to adjust the machine tool, and the processing quality of the same batch of workpieces is stable without stopping for inspection. The auxiliary time is greatly shortened, especially for CNC Machining centers that use automatic tool changing devices, which can achieve continuous processing of multiple processes on the same machine tool, and the improvement of production efficiency is more significant.