Tool-path correcting apparatus for machining curved surfaces
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Solution Overview
Problem
Conventional tool-path correcting methods fail to accurately detect when a tool is shaving or insufficiently shaving a machining surface, especially with offset shapes or asymmetrical tools, leading to inefficiencies and decreased work quality due to reliance on relative tool positions and manual operator corrections.
Innovation Solution
A tool-path correcting apparatus that calculates cut-point information based on tool path data and machining shape data, extracts correction command points, determines correction directions, and adjusts tool path data to ensure precise contact with the machining surface, eliminating the need for manual operator intervention and improving machining quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the allowable error is reduced to accurately move the tool with respect to the machining curved surface, then manufacturing precision is improved, but productivity deteriorates due to increased data creation time, enormous data amount, and inability to increase machining speed
Solution Approach 1:
The patent pre-calculates the relative positional relations between the tool and machining curved surface, and pre-identifies shaving and insufficient shaving states before actual machining. This preliminary analysis allows the system to prepare correction data in advance, reducing real-time computational burden and enabling faster machining without sacrificing precision.
Solution Approach 2:
The patent creates a virtual model of the machining process by calculating relative positional relations between the tool and machining curved surface. This virtual copying allows the system to simulate and analyze tool-path accuracy without physically executing the machining, enabling precise error detection and correction while reducing actual machining time and data processing requirements.
2Device complexity
If conventional tool-path correcting methods are used based on relative tool positions, then device complexity is reduced, but measurement precision deteriorates because they fail to accurately detect shaving and insufficient shaving states
Solution Approach 1:
The patent replaces conventional mechanical-based tool position monitoring with a computational approach that calculates relative positional relations between the tool and machining curved surface. This substitution uses mathematical models and computer algorithms to detect shaving states, achieving higher measurement precision without significantly increasing physical device complexity.
Solution Approach 2:
The patent introduces relative positional relation calculations as an intermediary between the tool path data and the correction process. This intermediary layer analyzes the geometric relationship between tool and workpiece, providing accurate shaving state detection that bridges the gap between simple position monitoring and complex machining analysis.
3Adaptability or versatility
If manual operator corrections are used, then adaptability is improved for handling complex machining types, but loss of time increases due to manual intervention requirements
Solution Approach 1:
The patent enables the tool-path correction system to automatically identify shaving and insufficient shaving states, extract correction command points, and generate corrected tool path data without manual operator intervention. The system serves itself by autonomously analyzing relative positional relations and performing corrections, eliminating time-consuming manual operations while maintaining adaptability to complex machining types through programmable algorithms.
Data Source
AI summary
A tool-path correcting apparatus includes a cut-point calculating unit that calculates, on the basis of tool path data, tool data, and shape data, cut point information, which is information concerning cut points by a tool on a machining curved surface of a machining shape at the time when the tool is disposed at command points described in the tool path data, a correction-command-point extracting unit that extracts, on the basis of the tool path data and the cut point information, correction command points, which are command points that should be corrected, from command points described in the tool path data, a command-point-correcting-direction determining unit that determines, on the basis of the correction command points, command point correcting directions, which are directions in which the correction command points should be corrected, and a tool-path-data correcting unit that corrects the tool path data.