Axis Route Optimization Under Redundant Machine Tool Kinematics
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Solution Overview
Problem
In machine configurations with excess degrees of freedom, existing technologies fail to optimize movement routes for axes, leading to suboptimal machining processes that do not consider load on the machine tool effectively.
Innovation Solution
A movement route determination device that calculates an evaluation formula and constraint conditions based on machine configuration data, using optimization algorithms like quadratic programming to minimize or maximize the movement route within searchable ranges, ensuring optimal axis movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a movement route is determined by fixing any one of the axes in a machine configuration with excess degrees of freedom, then the movement route can be determined, but there is no assurance that the optimum movement route is determined in consideration of the load on the machine tool
Solution Approach 1:
The invention changes the parameters of the movement route by introducing an evaluation formula that quantifies the load on each axis. By calculating and comparing different movement routes based on these parameters (inertia, movement distance, load), the system identifies the optimal route that minimizes machine tool load while ensuring the machining program is satisfied, thereby resolving the contradiction between ease of operation and productivity
2Ease of operation
If a movement route is determined by fixing any one of the axes, then the movement route can be determined, but movement for an axis with large inertia and movement for a low-precision axis cannot be reduced as much as desirable
Solution Approach 1:
The invention introduces an evaluation formula that incorporates specific parameters for each axis including inertia and precision characteristics. By weighting the movement distance and load based on these parameters, the system prioritizes reducing movement for axes with large inertia or low precision, thereby optimizing the movement route to improve manufacturing precision while maintaining operational feasibility
3Adaptability or versatility
If the degree of freedom of axes is higher than the degree of freedom determined by a machining program, then flexibility in movement route is increased, but it becomes impossible to uniquely determine a movement route for each axis
Solution Approach 1:
The invention implements a feedback mechanism by calculating the evaluation formula for multiple candidate movement routes and comparing their values. The system uses this feedback to iteratively select and refine the optimal movement route, transforming the complexity of excess degrees of freedom into a structured optimization process that uniquely determines the best route while preserving flexibility
Data Source
AI summary
Provided is a technology for enabling optimization of a movement route of an axis in a machine configuration having a high degree of freedom. This movement route determination device is provided with: an evaluation formula calculation unit that calculates an evaluation formula for determining a movement route; a constraint condition calculation unit that calculates, as a constraint condition for determining the movement route, an axis relational formula based on machine configuration data of a machine tool; and a route search unit that searches for the movement route on the basis of the evaluation formula and the constraint condition. The route search unit determines the movement route such that a range where search can be performed by the evaluation formula becomes minimum or maximum.