How precise is a CNC lathe?
2022-02-26 11:39:26
The accuracy of the machine tool mainly includes the geometric accuracy of the machine tool, the positioning accuracy of the machine tool and the cutting accuracy of the machine tool.
The geometric accuracy of the CNC machine tool reflects the geometric shape error of the key mechanical parts of the machine tool (such as the bed, slide, column, spindle box, etc.) and the geometric shape error after assembly, including the flatness of the work surface, The mutual perpendicularity of movement, the parallelism of the movement in the X and Y coordinate directions of the worktable, the radial runout of the spindle hole, the axial movement of the spindle, and the parallelism of the spindle axis when the spindle box moves along the z coordinate axis direction , The straightness of the spindle moving in the z-axis coordinate direction and the verticality of the spindle's rotation axis to the worktable surface, etc.
The positioning accuracy of CNC lathe tools refers to the position accuracy that can be achieved when the moving parts of the measured machine tool move under the control of the CNC system. This accuracy, like the geometric accuracy of the machine tool, will have an important impact on the cutting accuracy of the machine tool, especially the hole spacing error during hole machining.
The inspection to check the cutting accuracy of the machine tool is a comprehensive inspection of the geometric accuracy and positioning accuracy of the machine tool under the cutting conditions, including the single-item machining accuracy inspection and the accuracy inspection of the processed cast iron samples (the carbide tools are cut according to the standard cutting amount) .
The machining accuracy requirements of key parts of typical parts of CNC machine tools determine the accuracy level of CNC machine tools. According to the application, CNC machine are divided into simple type, full-function type, ultra-precision type, etc., and the precision they can achieve is also different. The simple type is also used in some lathes and milling machines. The minimum motion resolution is 0.01mm, and the motion accuracy and machining accuracy are above (0.03 ~ 0.05) mm. Ultra-precision type is used for special processing, and its accuracy can reach below 0.001mm.
The geometric accuracy of the CNC machine tool reflects the geometric shape error of the key mechanical parts of the machine tool (such as the bed, slide, column, spindle box, etc.) and the geometric shape error after assembly, including the flatness of the work surface, The mutual perpendicularity of movement, the parallelism of the movement in the X and Y coordinate directions of the worktable, the radial runout of the spindle hole, the axial movement of the spindle, and the parallelism of the spindle axis when the spindle box moves along the z coordinate axis direction , The straightness of the spindle moving in the z-axis coordinate direction and the verticality of the spindle's rotation axis to the worktable surface, etc.
The positioning accuracy of CNC lathe tools refers to the position accuracy that can be achieved when the moving parts of the measured machine tool move under the control of the CNC system. This accuracy, like the geometric accuracy of the machine tool, will have an important impact on the cutting accuracy of the machine tool, especially the hole spacing error during hole machining.
The inspection to check the cutting accuracy of the machine tool is a comprehensive inspection of the geometric accuracy and positioning accuracy of the machine tool under the cutting conditions, including the single-item machining accuracy inspection and the accuracy inspection of the processed cast iron samples (the carbide tools are cut according to the standard cutting amount) .
The machining accuracy requirements of key parts of typical parts of CNC machine tools determine the accuracy level of CNC machine tools. According to the application, CNC machine are divided into simple type, full-function type, ultra-precision type, etc., and the precision they can achieve is also different. The simple type is also used in some lathes and milling machines. The minimum motion resolution is 0.01mm, and the motion accuracy and machining accuracy are above (0.03 ~ 0.05) mm. Ultra-precision type is used for special processing, and its accuracy can reach below 0.001mm.
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