Vibration Absorber Mechanism for Grinding-Cutting Vibration Suppression
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Solution Overview
Problem
Conventional grinding-cutting mechanisms experience vibration issues due to imperfect workpiece support, leading to reduced machining precision and surface quality, as frequent adjustments to the rotation speed of the principal shaft compromise surface roughness and precision.
Innovation Solution
A mechanism incorporating a C-shaped seat, fixed support seat, clamp device, and vibration absorber, where the vibration absorber is screwed into the C-shaped seat and contacts the clamp device to absorb vibration energy, allowing for adjustable K value optimization based on workpiece and machining conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the rotation speed of the principal shaft is frequently adjusted to suppress vibration, then vibration is reduced, but surface roughness and machining precision deteriorate
Solution Approach 1:
The harmful vibration is extracted and isolated from the machining system by introducing a dedicated vibration absorber device. The absorber captures and dissipates vibration energy separately, allowing the main machining system to operate at optimal speeds without vibration interference, thus maintaining both vibration suppression and machining precision.
Solution Approach 2:
The vibration absorber acts as an intermediary element between the workpiece and the vibration source. It mediates the vibration transmission by absorbing and dampening vibrational energy, enabling the system to maintain stable machining conditions without requiring frequent speed adjustments that would compromise precision.
2Ease of operation
If a conventional follow rest is used to support the workpiece, then support is provided, but sliding friction occurs during workpiece rotation causing vibration
Solution Approach 1:
The conventional mechanical follow rest system is replaced with a vibration absorber mechanism that uses vibration isolation and energy dissipation principles. This substitution eliminates the sliding friction interface between the support and rotating workpiece, thereby removing the source of vibration while maintaining effective workpiece support throughout the machining process.
3Measurement precision
If the follow rest contacts the workpiece in rigidity-to-rigidity manner, then positioning is achieved, but incomplete restriction occurs due to workpiece imperfections
Solution Approach 1:
The support system transitions from rigid-to-rigid contact to a compliant vibration-absorbing interface. By changing the mechanical parameters of the support system to include vibration absorption capabilities, the device can adapt to workpiece imperfections while maintaining reliable restriction and positioning throughout machining operations.
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 solution effectively reduces workpiece vibration during machining by transferring vibration energy to the vibration absorber, enhancing machining precision and surface quality by allowing adjustable vibration absorption in line with the cutting tool's movement.
Implementation Method 1
a vibration absorber being screwed in the thread hole of the C-shaped seat and contacting with the clamp device. Thereby, the vibration caused during machining the workpiece can be transferred to the vibration absorber through the clamp device.
Data Source
AI summary
A mechanism for suppressing grinding-cutting vibration comprises a C-shaped base, a fixed support seat, a clamp device and a vibration absorber. Based on vibration absorbing principle of the vibration theory, the clamp device is connected to the movable cutting machine, so as to move along with the cutting machine during the machining operation, and the clamp force applied to clamp the workpiece is adjustable. By such arrangements, the vibration energy produced at the time of cutting the workpiece can be transferred to the vibration absorber through the clamp device, and then a part of the vibration energy will be absorbed by the vibration absorber, thus achieving the objective of reducing vibration of the cut position.