Adjustable Cantilever Damper for Machine Tool Chatter Suppression
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Solution Overview
Problem
Existing vibration suppression devices for machine tools require frequent replacement of elastic members with different thicknesses or materials to match varying vibration frequencies, making adjustments labor-intensive and impractical.
Innovation Solution
A vibration suppression device with a flexible member and weight configuration that includes an adjustment mechanism to change the distance between fixed and free ends, allowing for phase opposition and effective vibration suppression without needing to replace components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elastic members with different thicknesses or materials are replaced to match varying vibration frequencies, then vibration suppression effectiveness is improved, but device complexity and labor time increase
Solution Approach 1:
The flexible member is designed with an adjustable length configuration, allowing the distance between its fixed end and free end to be modified. This dynamic adjustment capability enables the vibration suppression device to adapt to different vibration frequencies without replacing elastic members, thereby maintaining suppression effectiveness while reducing device complexity and labor requirements
Solution Approach 2:
The invention changes the physical parameter of the flexible member (length/distance between fixed and free ends) to adjust the natural frequency of the vibration suppression device. By modifying this geometric parameter rather than replacing the entire elastic member, the system can match varying vibration frequencies while avoiding the complexity of multiple elastic member inventories
2Manufacturing precision
If elastic members are replaced frequently to match different vibration characteristics, then vibration suppression accuracy is improved, but time consumption and labor increase
Solution Approach 1:
The adjustable length mechanism allows operators to quickly modify the distance between the fixed end and free end of the flexible member to match different vibration characteristics. This dynamic adjustment is far faster than complete elastic member replacement, significantly reducing adjustment time while maintaining vibration suppression accuracy
Solution Approach 2:
The flexible member is pre-designed with an adjustable configuration that allows for quick reconfiguration. This preliminary design enables the system to be prepared for different vibration scenarios without requiring pre-fabricated replacement elastic members, thereby reducing both preparation time and adjustment time
3Adaptability or versatility
If multiple elastic members of various thicknesses are prepared for different machine tools, then adaptability is improved, but inventory complexity and cost increase
Solution Approach 1:
A single flexible member design with adjustable length capability serves multiple functions across different machine tool applications. By adjusting the distance between the fixed end and free end, the same flexible member can adapt to different vibration frequencies and machine tool configurations, eliminating the need for multiple specialized elastic members
Solution Approach 2:
The flexible member incorporates a movable component that allows the distance between its fixed and free ends to be dynamically adjusted. This dynamic configurability provides universal adaptability to different machine tools and vibration characteristics without requiring inventory management of multiple elastic member types
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
Enables easy and effective vibration suppression across different vibration characteristics, reducing labor and time required for adjustments and improving machining accuracy by canceling out chatter vibrations.
Implementation Method 1
a flexible member 52 having a first position F fixed to the saddle 10 which is a structure to be the fixed end of a cantilever and a second position S which is a free end side
Implementation Method 2
since the weight is less likely to move because of its large inertia, the vibration is absorbed by the weight
Data Source
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AI summary
There is provided a vibration suppression device 50, a machine tool including the device 50 and a vibration suppression method using the device 50, the vibration suppression device 50 comprising: a flexible member 52 having a first position F fixed to the structure 10 to be a fixed end of a cantilever and a second position S on a free end side; and a weight 54 attached to the flexible member 52 in the second position S, wherein the vibration suppression device 50 has an adjustment mechanism for changing a distance between the first position F and the second position S. Accordingly, it can effectively suppress vibration of a structure, and that can effectively suppress the vibration by easy adjustment when the characteristic of a generated vibration is different.