Opposed-Spindle Lathe Machining Time Estimation by Direction
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Solution Overview
Problem
The estimation of machining time in opposed-spindle type lathes varies significantly due to differences in technician experience and the determination of machining direction, which is not adequately considered by existing machining-related information generation devices.
Innovation Solution
A machining time estimation device that includes a material data input reception unit, a product data input reception unit, a machining direction determination unit, and a time estimate output unit. This device determines the machining direction based on constraint condition data and product data, and calculates time estimates for first and second machining operations to provide a standardized machining time estimate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If machining direction is determined by technician experience, then machining expertise can be utilized, but estimation results vary according to technician knowledge and experience
Solution Approach 1:
The patent replaces the manual, experience-based machining direction determination with an automated computer-based determination system. The determination unit automatically determines the machining direction based on constraint condition data and product data, eliminating the need for technician judgment and ensuring consistent results across different users and applications.
2Measurement precision
If automated machining direction determination is implemented, then estimation consistency is improved, but determination accuracy may deteriorate without expert judgment
Solution Approach 1:
The patent changes the parameters used for machining direction determination from subjective technician experience to objective data parameters including constraint condition data (machining constraints, tool constraints) and product data (product shape, material shape). This transformation enables automated determination while maintaining or improving accuracy through systematic evaluation of relevant parameters.
3Ease of manufacture
If machining direction determination is not considered, then existing systems can be used, but variation in estimated machining time occurs due to differences in estimated machining direction
Solution Approach 1:
The patent segments the machining time estimation process into distinct functional units: a determination unit that specifically handles machining direction determination based on constraint and product data, and a calculation unit that computes machining time. This segmentation allows the determination function to be independently optimized while integrating with existing estimation frameworks.
Data Source
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AI summary
Provided is a technique with which variation in an estimated machining time due to differences in an estimated machining direction can be eliminated appropriately in a lathe having an opposite spindle. A machining direction determination unit determines a machining direction, i.e., whether to orient a product in a first direction along a material axis or a second direction opposite to the first direction, on the basis of constraint condition data indicating constraint conditions of front machining (first machining) and/or back machining (second machining), and product data. A time estimate output unit calculates a first time estimate required for the front machining and a second time estimate required for the back machining in accordance with the machining direction on the basis of machining condition data indicating machining conditions (including a machining speed) corresponding to tools used respectively for the front machining and the back machining, as well as material data and the product data, and outputs an estimate of a time required to manufacture the product on the basis of the first time estimate and the second time estimate.