Types and selection skills of the most popular NC

2022-07-23
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Types and selection skills of NC tools

tools can be divided into five categories according to the form of workpiece surface. Tools for machining various external surfaces, including turning tools, planers, milling cutters, external surface Broaches and files; Hole processing tools, including drill, reamer, boring tool, reamer and broach for inner surface; Thread processing tools, including tap, die, automatic opening and closing thread cutting head, thread turning tool and thread milling tool; Gear processing tools, including hobs, gear shaper cutters, gear shaving cutters, bevel gear processing tools, etc; Cutting tools, including inlaid circular saw blade, band saw, hacksaw, cutting turning tool and saw blade milling cutter, etc. In addition, there are combined tools

according to the cutting motion mode and the corresponding blade shape, the material still maintains its integrity as a load-bearing surface, and the tools can be divided into three categories. General tools, such as turning tools, planing tools, milling tools (excluding formed turning tools, formed planing tools and formed milling tools), boring tools, drill bits, reamers, saws, etc; Forming cutters, whose cutting edges have the same or nearly the same shape as the cross-section of the workpiece to be machined, such as forming turning tools, forming planers, forming milling cutters, broaches, taper reamers and various thread processing tools; Generating cutters are used to process the tooth surface of gears or similar workpieces, such as hobs, gear shapers, shaving cutters, bevel gear planers and bevel gear milling cutters

tool selection is carried out under the development of China's plastic machine with the human-computer interaction of NC programming and pressing the "drop hammer" key. The cutting tool and tool holder shall be correctly selected according to the processing capacity of the machine tool, the performance of workpiece materials, processing procedures, cutting parameters and other relevant factors. The general principle of tool selection is: convenient installation and adjustment, good rigidity, high durability and precision. On the premise of meeting the processing requirements, try to select a shorter tool handle to improve the rigidity of tool processing

when selecting a tool, the size of the tool should match the surface size of the workpiece to be machined. In production, end mills are often used to process the peripheral contour of plane parts; When milling the plane, the carbide blade milling cutter should be selected; Select high-speed steel end milling cutter when machining boss and groove; When processing the rough surface or rough hole, the corn milling cutter with cemented carbide blade can be selected; Ball end milling cutter, ring milling cutter, conical milling cutter and disk milling cutter are often used for machining some solid surfaces and variable angle profiles

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