Machine Tool Vibration Restriction at Path Transition Starts
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Solution Overview
Problem
Machine tools face challenges in maintaining precise control over reciprocating vibration during transitions between different machining feeding directions, leading to inefficiencies and irregularities in cutting processes.
Innovation Solution
Incorporating a vibration restriction mechanism that temporarily halts reciprocating vibration as the cutting tool moves from one movement path to another, allowing continuous movement along multiple predetermined paths with controlled vibration resumption after a predetermined period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If reciprocating vibration is applied during continuous cutting along multiple movement paths, then cutting efficiency is improved, but vibration irregularities occur at movement starting positions
Solution Approach 1:
The vibration control device applies periodic action by temporarily stopping reciprocating vibration at movement starting positions and resuming it after a predetermined period. This periodic interruption prevents vibration irregularities at path transitions while maintaining cutting efficiency during stable machining segments, resolving the contradiction between productivity and manufacturing precision.
2Speed
If reciprocating vibration is continuously applied during path transitions, then machining speed is maintained, but vibration instability occurs at movement starting positions
Solution Approach 1:
The vibration control device performs preliminary action by detecting movement starting positions in advance and stopping reciprocating vibration before the tool reaches these positions. This preliminary intervention prevents vibration instability at path transitions, allowing the system to maintain high machining speed during stable cutting phases while ensuring vibration stability at critical transition points.
3Manufacturing precision
If vibration restriction is applied at movement starting positions, then cutting shape accuracy is improved, but additional control complexity is introduced
Solution Approach 1:
The vibration control device uses feedback by detecting the tool's position and movement state in real-time to determine when to stop or resume reciprocating vibration. This feedback mechanism enables automatic adjustment of vibration parameters at movement starting positions, improving cutting shape accuracy while keeping the control system manageable through intelligent automation rather than mechanical complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach suppresses unnecessary vibration at movement starting positions, enhancing machining accuracy and preventing irregularities in cutting shapes by ensuring consistent feeding directions.
Implementation Method 1
vibration means for reciprocatingly vibrating the cutting tool and the workpiece relative to each other
Implementation Method 2
vibration restriction means that operates as the movement of the cutting tool changes from one movement path of two consecutive movement paths to the other movement path, for restricting the reciprocating vibration for a predetermined period
Data Source
AI summary
A machine tool includes: a cutting tool; rotating means; feeding means; and vibration means for reciprocatingly vibrating the cutting tool and the workpiece relative to each other; wherein the cutting process is carried out by a relative rotation of the workpiece and the cutting tool, and feeding of the cutting tool, to thereby move the cutting tool continuously along a plurality of predetermined movement paths each having a different machining feeding direction. The machine tool further includes vibration restriction means that operates as the movement of the cutting tool changes from one movement path of two consecutive movement paths to the other movement path, for restricting the reciprocating vibration for a predetermined period from the movement starting position of the movement paths, and starting the reciprocating vibration after the lapse of said predetermined period.