CNC Program Generation for Relief Shape Recognition
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Solution Overview
Problem
Existing methods for generating numerical control programs struggle with efficiently recognizing relief sectional shapes deviated from corners, leading to incorrect tool bit selection and reduced processing efficiency, as they often require manual correction and tool exchange from turning to groove tool bits.
Innovation Solution
A method that extracts groove shape data, calculates intersections with corner line segments, and recognizes relief shapes within predetermined dimensions, determining relief shape patterns based on positional relationships and vector directions to generate appropriate processing programs for either turning or groove tool bits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If groove shape data is recognized only when adjacent to a corner, then tool bit selection is simplified, but relief shapes deviated from corners cannot be correctly identified
Solution Approach 1:
The patent changes the recognition parameters from requiring direct adjacency to allowing deviation within a specified distance range. By introducing distance parameters (first specified distance in axial direction, second specified distance in radial direction), the system can identify relief shapes that deviate from corners while maintaining automated recognition, thus improving measurement precision without excessive complexity
Solution Approach 2:
The patent adds dimensional constraints by specifying maximum distances in both axial and radial directions from the corner. This multi-dimensional approach allows the system to recognize relief shapes in various positions relative to corners, not just directly adjacent ones, thereby improving recognition accuracy while keeping the condition manageable through clear spatial boundaries
2Productivity
If relief shapes deviated from corners are processed with groove tool bits, then shape accuracy is maintained, but processing efficiency decreases due to tool exchange
Solution Approach 1:
The patent enables the turning tool bit to perform both turning operations and relief shape processing without requiring tool exchange. By determining that relief shapes within specified distances from corners can be processed by the turning tool bit, the system achieves self-service capability, maintaining processing efficiency while ensuring accurate relief shape creation through the turning tool's inherent capabilities
3Extent of automation
If automated relief processing program is generated, then manual correction is reduced, but program accuracy decreases when relief shapes are deviated from corners
Solution Approach 1:
The patent introduces specific distance parameters (first and second specified distances) that define the boundary conditions for automated relief shape recognition. By changing the recognition parameter from strict adjacency to distance-based criteria, the automated program can accurately identify relief shapes deviated from corners, maintaining both high automation extent and program accuracy
Solution Approach 2:
The patent performs preliminary determination of whether groove shape data represents a relief shape by checking its position relative to corner data within specified distances before generating the processing program. This preliminary action ensures that the automated program correctly identifies relief shapes in advance, preventing the need for manual correction while maintaining accuracy
Data Source
AI summary
In a method of generating a numerical control program in which, based on sectional shape data of a product to which a relief processing is to be performed, a numerical control program for turning-processing the product is generated in order to recognize a groove shape data existing in the vicinity of a corner as a relief sectional shape, wherein groove shape data is extracted from the sectional shape data, an intersection of a line segment parallel to a turning axis and a line segment that is not parallel to the line segment is calculated as a corner of the sectional shape data, and the groove shape data is recognized as a relief sectional shape in a case where dimensions of a frame which includes from the corner to the groove shape data are within predetermined dimensions.