Machine Tool Vibration Damper Placement at Ram Antinodes
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Solution Overview
Problem
Existing machine tools face challenges in effectively damping vibrations near the tool center point due to limited space within the ram, leading to potential collisions and reduced damping performance when integrating vibration dampers, and attaching them close to the tool center point can result in undesirable collisions.
Innovation Solution
The solution involves arranging vibration dampers at specific points on or within machine elements where undesirable vibration modes are manifested, allowing for improved damping without the need for complex integration, using either passive or active vibration dampers, and positioning them at vibration antinodes to effectively reduce disruptive vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vibration dampers are attached as closely as possible to the tool center point, then damping effectiveness is improved, but collisions in the working area occur
Solution Approach 1:
The patent extracts the vibration damper from the immediate tool center point location and relocates it to a different position on the machine element (such as the ram) where it can still damp the vibration mode effectively without interfering with the working area. This separation allows the damper to maintain its damping function while avoiding collisions with tools or workpieces.
2Volume of moving object
If vibration dampers are integrated into the ram, then space utilization is improved, but integration complexity increases and space limitations reduce damping performance
Solution Approach 1:
The patent segments the vibration damper into a separate, modular component that can be attached to the ram rather than being fully integrated into its structure. This allows the damper to be mounted on the outer surface or at strategic locations on the ram, maintaining space efficiency while avoiding the complexity of internal integration and preserving adequate damping performance.
3Shape
If vibration dampers are integrated into the ram, then structural compactness is improved, but available space for damping reduces performance
Solution Approach 1:
The patent applies local quality by placing vibration dampers at specific locations on the machine element where vibration modes are manifested (such as at vibration antinodes). This targeted placement ensures that the dampers operate at points of maximum vibration amplitude, optimizing damping performance without requiring the entire structure to be modified or expanded.
4Ease of manufacture
If vibration dampers are attached externally, then installation simplicity is improved, but space for operation is reduced
Solution Approach 1:
The patent utilizes the outer surface of the ram or machine element as a mounting dimension for the vibration dampers. By attaching dampers to the external surface rather than integrating them internally, the solution maintains installation simplicity while strategically positioning them in locations that minimize interference with the working area, effectively using the vertical or lateral dimension rather than consuming horizontal working space.
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 enhances damping quality and reduces tool wear, noise, and productivity losses by strategically placing vibration dampers at points of maximum amplitude, improving machining accuracy and efficiency.
Implementation Method 1
at least one vibration damper is arranged on the machine element to damp a vibration mode that occurs during operation of the machine tool
Data Source
AI summary
A machine tool includes a machine element and a vibration damper arranged on the machine element to damp a vibration mode that occurs during operation of the machine tool and is manifested at a tool center point of the machine tool and at a point of the machine element. The vibration damper is arranged on the point of the machine element, with the vibration mode having a vibration antinode at the point.