CNC milling machine surface shape is generally composed of straight lines, arcs or other curves. Common milling machine operators according to the design requirements. Constantly changing the relative position between the cutter and the workpiece, and then with the selected milling speed, so that the cutter on the workpiece cutting, you can process a variety of different shapes of the workpiece.
CNC milling machine
1. CNC milling machine is on the basis of the development of a general milling machine automatic processing equipment, the two processing technology is basically the same, the structure is also some similar. CNC milling machines are divided into two categories without and with the knife library. CNC milling machine with cutter base is also called machining center.
2. The size of the smaller lifting table CNC milling machine, the width of the table is more than 400mm, it is most suitable for the processing of small and medium-sized parts and complex shape surface profile milling task. Large specifications such as gantry type milling machine, table in 500-600mm above, used to solve the processing needs of large complex parts.
3. CNC milling machine processing
The positioning accuracy of its linear motion coordinates is 0.04/300mm, the repeated positioning accuracy is 0.025mm, and the milling precision is 0.035mm.
Advantages of CNC milling machine
1. Good adaptability and flexibility in parts processing, able to process parts with particularly complex contour shape or difficult size control, such as mold parts, shell parts, etc.;
2. Able to process parts that cannot be processed or are difficult to be processed by ordinary machine tools, such as complex curve parts described by mathematical models and three-dimensional space surface parts;
3. Can process parts that need to be processed by multiple processes after a single clamping positioning;
4. High processing precision, stable and reliable processing quality, the pulse equivalent of the NUMERICAL control device is generally 0.001mm, the high-precision NUMERICAL control system can be up to 0.1 m, in addition, the numerical control processing also avoids the operation error of the operator;
5. High degree of production automation can reduce the labor intensity of operators. Conducive to production management automation;
6, high production efficiency, CNC milling machine generally does not need to use special fixture and other special process equipment, in the replacement of the workpiece just need to call stored in the CNC machining program, clamping tools and tool data can be adjusted, thus greatly reducing the production cycle. Secondly, CNC milling machine with milling machine, boring machine, drilling machine functions, so that the process highly concentrated, greatly improve the production efficiency. In addition, CNC milling machine spindle speed and feed speed are continuously variable, so it is conducive to choose the best cutting parameters;
The size of the smaller lifting table CNC milling machine, the width of the table is more than 400mm, it is most suitable for the processing of small and medium-sized parts and complex shape surface profile milling task. Large specifications such as gantry type milling machine, table in 500-600mm above, used to solve the processing needs of large complex parts.
CNC milling machine processing part is the surface profile, according to the geometric shape of the surface should choose two coordinate linkage and three coordinate linkage system. Also according to the parts processing requirements, on the basis of the general CNC milling machine, increase the NUMERICAL control indexing head or CNC rotary table, the machine tool system for the four coordinates of the NUMERICAL control system, can be processed spiral groove, blade parts.
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