Grinding Wheel Holder Structure for Rigidity and Vibration Damping
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Solution Overview
Problem
High-performance grinding processes in machine tools often suffer from vibrations due to imbalances, which cannot be adequately reduced by existing damping elements, leading to unsatisfactory results and potential tool damage.
Innovation Solution
A grinding wheel holder design featuring a rotationally symmetrical hollow-cylindrical base body with a through-tube that provides coolant supply and increased rigidity, combined with modular components for joint damping, adjustable tension, and integrated damping materials like foams or elastomers, along with balancing screws for compensating imbalances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a damping element is added to reduce vibrations, then vibration damping is improved, but the rigidity of the grinding wheel holder decreases
Solution Approach 1:
The grinding wheel holder is divided into multiple segments: a hollow-cylindrical base body, a through-tube arranged at a distance from the base body, and multiple damping elements positioned between them. This segmentation allows each component to fulfill its specific function - the through-tube provides structural rigidity while the damping elements handle vibration absorption, resolving the contradiction between rigidity and damping.
Solution Approach 2:
Damping elements are introduced as intermediary components positioned between the through-tube and the hollow-cylindrical base body. These intermediaries absorb vibrations while allowing the through-tube and base body to maintain their rigid structural connection, thus enabling both rigidity and vibration damping to coexist.
2Device complexity
If a one-piece solid base body is used for coolant conduction, then structural simplicity is improved, but weight increases and damping capability decreases
Solution Approach 1:
The base body is designed as a hollow-cylindrical structure rather than a solid one-piece component. This segmentation creates a cavity that can accommodate damping elements and through-tube arrangements, reducing weight by approximately 40% while maintaining structural integrity through the hollow cylindrical geometry.
Solution Approach 2:
The hollow-cylindrical base body serves multiple functions: it provides structural support, contains the damping elements within its cavity, facilitates coolant flow through its hollow structure, and works in conjunction with the through-tube for rigid connection. This multi-functionality maintains structural simplicity while achieving weight reduction and enhanced damping.
3Strength
If the through-tube is arranged close to the base body, then rigidity is improved, but coolant flow path and damping space are restricted
Solution Approach 1:
The through-tube is positioned at an optimized distance from the hollow-cylindrical base body, creating a specific local arrangement that balances rigidity requirements with the need for cavity space. This local quality optimization ensures sufficient rigidity for high-performance grinding while maintaining adequate cavity volume for damping elements and coolant flow paths.
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
The design achieves high rigidity, significant weight reduction (approximately 40%), and enhanced damping capabilities, effectively reducing vibrations and improving grinding results while preventing coolant leakage.
Implementation Method 1
A through-tube is arranged in the cavity of the receiving base body...arranged in particular braced against the receiving base body
Implementation Method 2
The hollow-cylindrical base body, which is also provided for the grinding wheel holder, enables a noticeable weight reduction (approx. 40%) in the grinding wheel holder
Implementation Method 3
The modular design of several components that can be joined or joined together, such as the base body and the through-tube arranged in the cavity of the base body, and the resulting joints have a damping effect, which is known as joint damping, namely at joints or at the interfaces between components energy dissipated
Implementation Method 4
the through-tube or coolant tube can conduct coolant from one end of the base body (work/grinding spindle interface) through this to the other end of the base body (grinding wheel support/grinding wheel)
Data Source
Figure 1
Figure 1a
Figure 2
AI summary
The invention relates to a grinding wheel holder. The grinding wheel holder has a rotationally symmetrical, hollow cylindrical base body. A through-tube, in particular clamped against the base body, is arranged in the cavity of the base body, spaced apart from the cylindrical surface of the (hollow cylindrical) base body.