NC Lathe Tool Measurement for Accurate Interference Checks
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Solution Overview
Problem
Conventional machine tool systems require manual verification and correction of tool positions and shapes, leading to potential errors and inefficiencies in interference checks, especially when selecting the correct tool and determining its attaching position.
Innovation Solution
A machine tool system equipped with a measuring apparatus that automatically measures the position and shape of tools attached to the tool post, allowing for accurate interference checks using imaginary three-dimensional models and eliminating the need for manual verification by storing correction values automatically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual tool selection and position input are used in interference check, then the process can be completed, but errors occur in tool selection and attaching position determination
Solution Approach 1:
The measuring apparatus automatically measures and inputs the tool's attaching position and shape data without operator intervention. The system self-services by capturing the actual tool parameters directly from the machine, eliminating manual input errors and improving both reliability and ease of operation.
Solution Approach 2:
The patent replaces the manual mechanical process of measuring and inputting tool parameters with an automated optical/measuring system. The measuring apparatus uses non-contact or minimal-contact measurement to automatically acquire tool position and shape data, substituting human operation with automated detection technology.
2Reliability
If interference check is performed using imaginary three-dimensional model, then interference can be detected, but verification on actual machine is required which is inconvenient
Solution Approach 1:
The patent creates a precise digital copy (imaginary three-dimensional model) of the actual tool and workpiece geometry. This virtual model accurately replicates the physical objects, allowing interference checks to be performed in silico with results that directly reflect real-world conditions, eliminating the need for physical verification.
Solution Approach 2:
The interference check is performed in advance using the virtual model before actual machining begins. By conducting the simulation beforehand with accurate tool position data, potential interferences are identified and resolved prior to production, preventing downtime and rework during actual operation.
3Manufacturing precision
If correction value is manually input and stored, then tool edge position can be corrected, but human error occurs and convenience is reduced
Solution Approach 1:
The measuring apparatus automatically calculates and stores the correction value based on the measured tool edge position. The system self-services by performing the calculation and storage operations without operator intervention, eliminating manual input errors while maintaining high precision in the correction data.
Data Source
AI summary
A highly convenient machine tool system is provided. An NC lathe as an example of the machine tool system includes a first tool post to which a first tool for machining a workpiece is attached, a numerical control unit adapted to control a movement of the first tool post according to a numerical control program, and a scanner adapted to measure a position and a shape of the first tool attached to the first tool post brought to a predetermined position under control of the numerical control unit.