CNC machining tool selection

Tool selection is under CNC programming of interactive state. Should be based on the machine's processing capacity, performance, manufacturing processes, as well as other relevant factors cutting the amount of workpiece material and the correct selection of the tool holder. Tool selection The general principle is: easy to install, good rigidity, high durability and precision. Meet the processing requirements under the premise, try to choose a shorter handle, in order to improve the rigidity of tooling. 
When selecting tools, make CNC machined workpiece size and surface dimensions of the tool to adapt. Production, plane parts around the contour machining, often using mills; milling plane, to be elected carbide blade cutter; processing boss, when the groove, the election-speed steel milling cutter; rough surface or a rough hole machining , you can select corn milling inserts carbide inserts; for some three-dimensional surface and variable angle contour machining, often using ball nose cutter, circular cutter, conical cutters and disc cutter. 
During free-form surface machining, because the ball ends tool cutting head is zero, therefore, to ensure precision cutting line spacing can usually get very close, so the ball head commonly used in surface finishing. The flat surface machining tool cutting efficiency and quality are superior ball head knife, so long as the guarantee, but cut the premise, either roughing or finishing surfaces, should give priority to flat knife. In addition, the durability and precision cutting tools and tool prices great relationship, and we must note that in most cases, choose a good tool despite an increase in tooling costs, but the resulting processing quality and processing efficiency, you can greatly reduce the cost of the entire process. 
In the processing center, a variety of tools are mounted on the knife, according to program requirements at any time for tool selection and tool change operation. Therefore must use standard shank, so that the standard tool drilling, boring, expansion, milling and other processes used to quickly and accurately fitted to the machine spindle or magazine up. Programmers should be used to understand the structural dimensions holder on the machine, adjust the method and the adjustment range, in order to determine the radial and axial dimensions of the tool in the program design. At present, China's processing center using TSG tool system, its holder has two straight shank (three sizes) and taper shank (four sizes), including a total of 16 kinds of tool holders for different purposes.

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