Machine Tool Vibration Phase Adjustment for Eccentric Workpieces
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Solution Overview
Problem
Existing machining techniques for eccentric workpieces using machine tools often result in composite vibrations that exceed allowable ranges, leading to increased load on the machine tool and potential mechanical issues.
Innovation Solution
A control device that adjusts the phase of vibrations caused by both the tool and the workpiece, using a vibration command generator, a relative vibration command generator, and a vibration phase adjuster to minimize or maximize the composite vibration amplitude within allowable limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the tool is vibrated relative to the workpiece during eccentric machining, then machining capability is improved, but composite vibration amplitude may deviate from allowable range
Solution Approach 1:
The control device adjusts vibration parameters (amplitude, frequency, phase) dynamically to maintain composite vibration within allowable ranges while preserving machining capability. The system modifies vibration command parameters based on real-time conditions to prevent excessive composite vibration.
Solution Approach 2:
The system monitors composite vibration levels and uses this feedback to adjust vibration commands, ensuring that vibration benefits are maintained while preventing harmful vibration amplitudes from developing during the machining process.
2Productivity
If vibration is increased to improve machining performance, then machining efficiency is improved, but load on the machine tool increases
Solution Approach 1:
The control device optimizes vibration parameter selection to achieve effective machining with minimized load. By carefully selecting and adjusting vibration amplitude and frequency parameters, the system maintains machining efficiency while keeping machine tool load within acceptable limits.
Data Source
AI summary
Provided are a control device and a computing device capable of adjusting synthetic vibration for a machine tool. This control device, which controls a machine tool, comprises: a vibration command generation unit that generates a vibration command for vibrating an implement of the machine tool or a workpiece; a relative vibration command generation unit that generates a relative vibration command for vibrating the implement and the workpiece relatively; and a vibration phase adjustment unit that adjusts the vibration phase of at least one of the vibration command and the relative vibration command on the basis of the vibration command and the relative vibration command.