Multi-Axis Control Timing Using Dynamic Ratio-Based Set Values
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Solution Overview
Problem
It is challenging to optimize the operation timings of different driving parts in industrial machines, such as laser machines, due to varying response times among the axes and other operating parts, which affects the processing results during high-speed machining.
Innovation Solution
A control device that includes a ratio calculator to determine the operational ratios of the axes and a setting value calculator to dynamically adjust the machine's setting values based on these ratios and predetermined parameters, ensuring synchronized operation across different axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed delay time is set on the output command to the laser oscillator to align with movement operations, then the response difference between laser output and driving units is absorbed, but it becomes difficult to optimize operation timings when response differs among multiple driving parts (X axis, Y axis)
Solution Approach 1:
The patent applies dynamics by making the delay time adjustable and adaptable rather than fixed. The control device dynamically determines appropriate delay times for each axis based on their individual response characteristics, allowing the system to adapt to varying response speeds of different driving units while maintaining reliable control
Solution Approach 2:
The patent segments the control approach by separately managing delay times for each axis (X axis, Y axis) rather than using a single unified delay. This allows independent optimization of operation timings for each driving part with different response characteristics, resolving the contradiction between reliability and adaptability
2Productivity
If high-speed machining is performed to improve productivity, then processing efficiency is increased, but the influence of response difference among axes on processing results becomes particularly large
Solution Approach 1:
The patent applies preliminary action by pre-determining and setting appropriate delay times for each axis before high-speed machining begins. The control device calculates and stores optimal delay values based on each axis's response characteristics, so that when high-speed machining is performed, the laser output is already synchronized with each axis's movement, maintaining processing accuracy at high speeds
Data Source
AI summary
A control device controls, on the basis of a processing program, a machine having at least two shafts. The control device includes: a ratio calculation unit that calculates a ratio related to the operation of the shafts; and a set value calculation unit that dynamically calculates a set value for the machine, from the ratio calculated by the ratio calculation unit and a prescribed parameter related to the shafts. The set value of the machine is changed according to the ratio related to the operation of the shafts.