NC Tool Position Correction for Workpiece Shape Precision
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Solution Overview
Problem
Existing NC processing machines require rewriting of the NC program each time a tool is replaced or worn out, leading to inefficiencies and increased complexity due to errors in the tool's contour affecting workpiece shape precision.
Innovation Solution
A method and machine that use an arithmetic expression in the NC program to calculate the tool's position, allowing for continuous use of the same program by correcting the tool's position based on measured contour errors, eliminating the need for program rewriting and simplifying the configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If concrete numerals are used in the NC program to move the tool, then the program can be executed with specific tool positions, but the program must be rewritten each time the tool is replaced or worn out
Solution Approach 1:
The patent changes the parameter representation from fixed concrete numerals to variable-based arithmetic expressions. The tool position is calculated dynamically using arithmetic expressions that incorporate measured contour errors, allowing the same NC program to adapt to different tool conditions without rewriting. This resolves the contradiction by maintaining precision through error compensation while eliminating repeated program rewriting.
Solution Approach 2:
The patent introduces dynamic adjustment of tool positions through arithmetic expressions that calculate positions based on measured contour errors. Instead of static fixed coordinates, the system dynamically computes tool positions by adding correction values to nominal positions, enabling the program to adapt to tool wear and replacement automatically.
2Manufacturing precision
If the tool contour errors are corrected by rewriting the NC program, then the workpiece shape precision is maintained, but the operation complexity increases
Solution Approach 1:
The patent creates a copy of the tool's actual contour through measurement and stores it as error data. This copied contour information is then used in arithmetic expressions to calculate corrected tool positions, eliminating the need to manually rewrite the NC program while maintaining precision.
Solution Approach 2:
The patent replaces the mechanical process of manual program rewriting with an automated calculation system. Arithmetic expressions automatically compute corrected positions by combining nominal positions with measured error values, substituting manual operational complexity with automated computational simplicity.
3Manufacturing precision
If the tool position is corrected based on measured contour errors, then the workpiece shape precision is improved, but the device complexity increases
Solution Approach 1:
The patent creates a universal NC program structure using arithmetic expressions that can handle multiple tool types and error conditions. The same program framework works for different tools by simply changing the measured error values, reducing overall system complexity despite the added correction capability.
Data Source
AI summary
A method for processing a workpiece with a tool is provided with holding the workpiece, holding the tool, and moving the held tool relative to the held workpiece in accordance with an NC program including an arithmetic expression to calculate a position of the held tool.