Servo Press Motion Planning for Collision-Free Transfer Timing
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Solution Overview
Problem
Conventional methods for planning movements in servo presses require trial-and-error adjustments to avoid collisions between the transfer system and the press, leading to inefficiencies and downtime.
Innovation Solution
A method for calculating a servo press movement profile that integrates transport apparatus parameters, optimizing the minimum transfer and return times to ensure collision-free operations, allowing for synchronized and efficient movement planning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional trial-and-error method is used to adjust the servo press profile to match the transfer system, then the transfer and press can be synchronized, but the setup time increases and productivity decreases due to repeated testing and adjustments
Solution Approach 1:
The patent applies preliminary action by calculating the optimal press profile in advance using a simulation model that incorporates the actual transfer system parameters (acceleration, deceleration, positioning times). This pre-calculation eliminates the need for trial-and-error adjustments during setup, as the profile is optimized before actual production begins.
Solution Approach 2:
The patent replaces the mechanical trial-and-error adjustment process with a computational simulation approach. A simulation model calculates the press profile based on transfer system parameters, substituting physical testing with virtual modeling to determine the optimal synchronization profile.
2Productivity
If the press moves faster to increase productivity, then output increases, but the risk of collision with the transfer system increases
Solution Approach 1:
The patent applies feedback by incorporating the transfer system's actual movement characteristics (acceleration, deceleration, positioning times) into the press profile calculation. The simulation model uses this feedback to determine the maximum safe press speed that avoids collision while maximizing productivity.
Solution Approach 2:
The patent changes parameters by dynamically adjusting the press profile parameters (speed, acceleration, positioning times) based on the transfer system's capabilities. The simulation model optimizes these parameters to achieve the fastest possible press cycle that still prevents collision.
3Reliability
If the transfer system is given more time to move materials to avoid collision, then safety increases, but the press cycle time increases and productivity decreases
Solution Approach 1:
The patent applies dynamics by creating a dynamic press profile that adjusts speed and positioning times throughout the cycle. Rather than using a static slow profile, the simulation model calculates variable speed profiles that allow the press to move faster when safe and slower only when necessary to coordinate with transfer operations.
Solution Approach 2:
The patent maintains continuity of useful action by optimizing the press profile to minimize idle time and keep the press operating at high speed throughout the cycle. The simulation ensures that the press is productive during the entire cycle while still coordinating with the transfer system to avoid collision.
Data Source
AI summary
A method for planning movements for a servo press and a movement controller configured to plan movements for a servo press and an associated computer program product, wherein a minimum transfer time and a minimum return time are taken into account in a movement cycle for a transport apparatus.