Precautions for choosing a vertical machining center

What should I pay attention to when choosing vertical machining center?

Processing characteristics

For the machining part is a frame plane or different levels of steps of different heights, then the CNC milling machine of the point-linear system can be selected. If the machining part is a surface contour, the system of two-coordinate linkage and three-coordinate linkage should be selected according to the geometry of the surface. It can also be according to the parts processing requirements, on the basis of the general CNC milling machine, increase the CNC indexing head or CNC rotary table, then the machine tool system is a four-coordinate CNC system, which can process spiral grooves, blade parts, etc.

dimension

The small size of the lifting table CNC milling machine, its workbench width is more than 400mm, it is suitable for small and medium-sized parts processing and complex surface profile milling tasks. Larger specifications such as gantry type milling machine, table in 500-600mm or more, used to solve the processing needs of large size complex parts.

precision

China has formulated the precision standard of CNC milling machine, of which CNC vertical milling machine lifting table milling machine has professional standards. The standard stipulates that the positioning accuracy of the linear motion coordinates is 0.04/300mm, the lathe accessories, the repeated positioning accuracy is 0.025mm, and the milling precision is 0.035mm. In fact, the machine tool factory accuracy has a considerable reserve, which is about 20% compressed than the national standard tolerance value. Therefore, from the perspective of precision selection, the general CNC milling machine can meet the processing needs of most parts. For parts with high precision requirements, a precision CNC milling machine should be considered.

Batch or other

For large quantities, users can use special milling machines. If it is a small and medium-sized batch and it is often repeated periodically, then the use of CNC milling machine is very suitable, because the first batch of many work fixtures, procedures, etc., can be stored and reused. In the long run, it is inevitable that milling machines with a high degree of automation will replace ordinary milling machines and reduce the labor amount of workers to improve productivity.