As a CNC machining center programming master, first of all, you must be very familiar with the process of CNC machining, and the understanding of cutting tools and CNC components is essential. Before programming, it is necessary to analyze the model first, such as which equipment is needed for mold processing, what size cutter should be used for roughing, what size cutter should be used for finishing milling, whether the length or rigidity of the cutter meets the standard, etc. This requires a full understanding of the performance and selection of the tool.
CNC machining tools must adapt to the characteristics of high speed, high efficiency and high degree of automation of CNC machine tools. Generally, they should include general tools, universal connection tool holders and a small number of special tool holders. The tool handle is connected to the tool and installed on the power head of the machine tool, so it has been gradually standardized and serialized. The classification of CNC tools mainly has the following basis.
According to the tool structure can be divided into:
Integral tool: The tool is integrated and made of one blank, without separation;
Welded tool: if it is connected by welding, it is a welded tool with a cutter head and arbor;
Special tools: such as composite tools, shock-absorbing tools, etc.
Tool selection:
In CNC machining, the choice of tool is directly related to the level of machining accuracy, the quality of the machined surface and the level of machining efficiency. Choosing the right tool and setting reasonable cutting parameters will enable CNC machining to achieve the best machining quality with the lowest cost and the shortest time.
In short, the general principle of tool selection is: easy installation and adjustment, good rigidity, high durability and precision. Under the premise of meeting the processing requirements, try to choose a shorter tool holder to improve the rigidity of tool processing.
CNC milling cutters are mainly divided into flat bottom cutters (end mills), round nose cutters and ball cutters in terms of shape.
Alloy Tool Parameters
In actual processing, the end mill is often selected to process the periphery of the contour of the plane part, the high-speed steel end mill (white steel knife) is selected to process such as straight bosses and grooves, and the corn milling cutter with cemented carbide blades is selected to process the blank. The surface of the surface, choose ball end milling cutter, ring milling cutter, conical milling cutter and disc milling cutter to process some three-dimensional surface and variable bevel profile shape. The alloy knife has good rigidity and is not easy to produce knife bounce, so it has the best effect for finishing molds. Alloy knives have side edges like white steel knives, and their side edges are often used when finishing copper straight walls.
