Numerical control machining method of practical cutter shaft direction deviating from programming cutter shaft direction

Abstract

The invention discloses a numerical control machining method of a practical cutter shaft direction deviating from a programming cutter shaft direction. In the numerical control machining method, a sphere mill is served as a processing cutter; the angle deviation of the practical cutter shaft direction deviating from the programming cutter shaft direction is determined; the practical cutter shaft is correspondingly provided with a practical cutter, and the programming cutter shaft is correspondingly provided with a programming cutter. The method comprises a tool setting step, a tool setting point in the tool setting step is the blade position of the practical cutter, which corresponds to the theoretical tool nose of the programming cutter. By using the invention, the problems that a common numerical control machine tool can not realize automatic turning processing coordinate system compensation when the spindle turns-around, the turning precision is uncorrected or regulated by manpower, and the inclined practical processing cutter shaft direction and the cutter shaft direction for a programming theory have errors; the existing conditions of machine tools and cutters are fully utilized; the existing hardware resources are furthest performed and utilized; parts which can not be processed before can be processed; and cost is lowered, and development period is shorted.

Description

technical field [0001] The invention relates to a method for numerically-controlled machining of a molded surface with a ball cutter. Background technique [0002] For digital milling of spatial curved surfaces, whether it is a fixed-axis milling situation where the direction of the tool axis does not change, or a four-axis, five-axis or multi-axis milling situation where the tool direction is constantly changing in space, the actual machining direction of the tool axis It is consistent with the programmed tool axis direction. In the processing of automobile stamping dies, 3+2-axis CNC machine tools are commonly used. When the fixed-axis ball cutter is used to process the profile, for the following situations, sometimes the actual processing direction of the tool axis is inconsistent with the programming: 1. It is limited by the performance of the machine tool itself. Like earlier machine tools, the spindle head itself can be rotated or replaced for U-turn processing, but t...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method that can effectively solve the problem of inability to realize automatic U-turn processing coordinate system compensation, inaccurate U-turn accuracy, or adjustment by manual adjustment and tilting of the actual machining tool axis direction and programming when the spindle of an ordinary CNC machine tool is turned around. The NC machining method where the actual tool axis direction deviates from the programmed tool axis direction due to the error problem in the theoretical tool axis direction

Images