Lathe Coordinate Mapping for Automatic Tool Holder Alignment

The patent applies preliminary action by pre-defining consistent coordinate directions and rotation specifications for the tool holder across all working modes before machining operations begin. The control unit is pre-programmed with transformation rules that automatically adjust tool holder orientation when switching between working modes, eliminating the need for manual adjustments during operation. This pre-configuration ensures the cutting edge is always properly aligned with the workpiece surface regardless of which working mode is active.

The patent implements universality by establishing a unified coordinate system framework that works across all working modes. Instead of creating separate coordinate transformation routines for each mode switch, the system defines universal positive directions for all coordinate axes that remain consistent regardless of the active working mode. The control unit uses these universal definitions to automatically perform appropriate transformations, allowing the same control logic to handle multiple working modes without increasing system complexity.

The patent applies parameter changes by systematically defining the orientation and direction of all coordinate axes as fixed parameters that remain consistent across working modes. Specifically, the patent defines positive directions for all coordinate axes (X, Y, Z, and rotation axes) in a standardized manner. When the working mode changes, the control unit automatically adjusts the tool holder rotation parameters based on these predefined coordinate definitions, enabling full automation without requiring complex real-time calculations or manual parameter adjustments.