In the field of CNC machining, the installation accuracy of CNC turret tools is a crucial factor that directly affects the machining quality. As a key component that carries tools and realizes tool change functions, the tool installation accuracy of CNC turret covers multiple aspects such as radial runout, axial movement, and relative position accuracy between the tool and the workpiece.
Tool installation accuracy plays a key role in dimensional accuracy control. If there is a radial deviation in the tool installation, the diameter size error of the workpiece will be caused during the machining process. For example, when turning the outer circle, the radial installation of the tool is too high, which will make the diameter of the machined workpiece larger, and vice versa. In the axial direction, inaccurate tool installation will cause dimensional deviation in the length direction of the workpiece. This deviation, even a small error, may cause the workpiece to be scrapped under high-precision machining requirements, especially for some precision parts, such as aircraft engine blades, which have extremely high dimensional accuracy requirements.
Good tool installation accuracy helps to improve the surface quality of the workpiece. When radial runout or axial movement occurs in the tool installation, the tool will generate unstable cutting force during the cutting process. This unstable cutting force will leave vibration marks on the surface of the workpiece, increasing the surface roughness. The precisely installed tool can ensure the smoothness of the cutting process, making the surface of the workpiece smooth and meeting the surface quality standards required by the design. In grinding, the installation accuracy of the tool (grinding wheel) has a more obvious impact on the surface quality. High-precision installation can avoid surface defects such as burns and scratches.
When processing workpieces with complex shapes, the impact of tool installation accuracy on shape accuracy cannot be ignored. For example, when processing conical or spherical surfaces, the installation angle deviation of the tool will cause the shape of the processed workpiece to deviate from the designed shape. For mold processing with complex curved contours, insufficient tool installation accuracy may lead to contour errors, which cannot meet the assembly and use requirements of the mold and affect the molding quality and service life of the entire mold. Therefore, ensuring the installation accuracy of CNC turret tools is a key link in ensuring processing quality.
