The factors affecting the selection of TOOL HOLDER include the machinability of workpiece material in each operation and the configuration of final parts. These factors can determine the Tool Holder size required to reach a specific contour or feature. The tool holder shall be as simple and easy to use as possible to minimize the possibility of operator error Characteristics of Cnc Tool Holder 1. When machining curved surface parts, in order to ensure that the cutting edge of the tool is tangent to the machining contour at the cutting point and avoid the interference between the cutting edge and the workpiece contour, ball head cutter, two edge milling cutter for rough machining and four edge milling cutter for semi finishing and finishing machining are generally used 2. When milling a large plane, in order to improve production efficiency and machining surface roughness, insert disc milling cutter is generally used 3. When milling small plane or step surface, general milling cutter is generally used 4. When milling keyway, in order to ensure the dimensional accuracy of keyway, two edge keyway milling cutter is generally used 5. When machining holes, drilling tools such as drill bits can be used CNC tool holder type The tool handles commonly used in CNC machining are mainly divided into drilling tool handles, boring tool handles, milling tool handles, thread tool handles and straight handle tool handles CNC machining requires more stringent requirements for tool stiffness, accuracy, durability and dynamic balance performance The selection of cutting tools should pay attention to the analysis of workpiece structure and processability, combined with the processing capacity of CNC machine tool, workpiece material and process content 40Cr is generally selected as the processing material of CNC tool handle. The positioning accuracy of the tool handle includes self positioning (such as BT) and over positioning (HSK and big). The static accuracy is good, and the main difference is the dynamic accuracy It is said that HSK can still keep close contact with the spindle at high speed and has good dynamic accuracy. It is widely used in high-speed machining. The workshop pays attention to the importance of tool holder in the machining system, and knows how to correctly match the correct tool holder with specific machine tools, machining strategies and workpieces to improve productivity and reduce costs.
