NC Program Conversion Using Machining-Form-Based Correction
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Solution Overview
Problem
Existing NC program conversion methods, such as those disclosed in PTL 1, are inadequate for converting NC programs suitable for one NC cutting machine to another, especially when two-direction correction is required based on the machining form of the workpiece.
Innovation Solution
An NC program conversion processing method that determines the machining form of a workpiece and decides on either one-direction or two-direction correction, then converts the source NC program to a destination NC program using the appropriate correction method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If one-direction correction is used for NC program conversion, then the conversion process is simple, but it cannot handle all machining forms of workpieces
Solution Approach 1:
The patent implements a dynamic correction method selection mechanism that automatically determines whether one-direction or two-direction correction is needed based on the machining form analysis. The system transitions from a static single-method approach to a dynamic multi-method approach, allowing the correction strategy to adapt to different machining scenarios (side surface machining, curved surface machining, pocket machining, etc.).
Solution Approach 2:
The patent changes the parameter of correction direction (one-direction vs. two-direction) based on the determined machining form. By analyzing the machining form first and then selecting the appropriate correction parameter, the system achieves both simplicity for suitable cases and comprehensiveness for all machining forms without requiring a completely complex conversion process.
2Adaptability or versatility
If two-direction correction is used for NC program conversion, then all machining forms can be handled, but the conversion process becomes complex
Solution Approach 1:
The patent segments the conversion process into distinct stages: machining form determination, correction method selection, and execution of specific correction type. This segmentation allows the system to apply only the necessary correction complexity for each specific machining form, avoiding unnecessary complexity in cases where simple one-direction correction suffices.
Solution Approach 2:
The patent applies partial action by selecting the minimum necessary correction type (one-direction or two-direction) based on the machining form analysis. Instead of always applying the more complex two-direction correction, the system uses just enough correction complexity to handle each specific machining scenario, optimizing the balance between comprehensiveness and simplicity.
3Loss of time
If NC program conversion does not consider machining form, then the conversion process is fast, but machining accuracy cannot be ensured
Solution Approach 1:
The patent performs preliminary machining form determination and correction method selection before executing the actual NC program conversion. By analyzing the machining form in advance and pre-selecting the appropriate correction strategy, the system avoids time-consuming trial-and-error conversions and ensures machining accuracy is achieved through the correct correction method from the start.
Data Source
AI summary
A numerical control (NC) program is converted regardless of a machining form of a workpiece. An NC program conversion processing method is an NC program conversion processing method for converting a conversion source NC program that controls a first machining center into a conversion destination NC program that controls a second machining center, which includes: a determination step of determining a machining form of a workpiece by the conversion source NC program; a decision step of deciding a correction method to be one-direction correction or two-direction correction according to the determined machining form of the workpiece; and a conversion step of converting the conversion source NC program into the conversion destination NC program using the decided correction method.