1, processing characteristics
For the processing part is the frame plane or unequal height of all levels of the step, then choose the point - CNC milling machine can be a linear system. If the machining part is the surface contour, should be based on the geometric shape of the surface to decide the choice of a two-coordinate linkage or a three-coordinate linkage system. Also according to the parts processing requirements, on the basis of the general numerical control milling machine, increase the numerical control indexing head or numerical control rotary table, then the machine tool system for the four-coordinate numerical control system can process spiral groove, blade parts, etc.
The size of the smaller lifting table CNC milling machine, the width of the worktable is more than 400mm below, it is the most suitable for small and medium-sized parts processing and complex shape surface contour milling task. Large specifications such as gantry type milling machine, the table in 500-600mm above, used to solve the large size of complex parts processing needs.
The precision standard of numerical control milling machines has been established in China, including numerical control vertical milling machine lifting table milling machine has professional standards. The standard stipulates that the positioning accuracy of linear motion coordinates is 0.04/300mm, the repeated positioning accuracy is 0.025mm, and the milling precision is 0.035mm. In fact, the accuracy of machine tools has a considerable amount of reserves, compared with the national standard tolerance value of about 20% compression. Therefore, from the point of precision selection, the general CNC milling machine can meet the processing needs of most parts. For parts with high precision requirements, we should consider the choice of a precision CNC milling machine.
For large quantities of items, a special milling machine can be used. If it is a small and medium-sized batch and often repeated periodic production, then the use of a CNC milling machine is very appropriate, because the first batch of a lot of ready fixtures, and programs can be stored and reused. In the long run, the automation of high milling machines instead of ordinary milling machines, reducing the amount of labor and improving the productivity of the trend is inevitable.
OEM CNC milling machine parts processing adaptability, flexibility is good, can process the contour shape is particularly complex or difficult to control the size of the parts, such as mold parts, shell parts, etc. Bergek is a professional manufacturer of customized sheet metal and CNC machining. Please contact us if you have any questions.
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