Rotor Balancing With Shallow Cuts Over a Longer Peripheral Arc
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Solution Overview
Problem
Rotationally symmetrical components, such as rotor components in turbomachines, face challenges in achieving balanced operation due to unbalances, which can lead to unfavorable loads, and existing balancing methods may not effectively distribute the balancing removal process over a large enough peripheral region, limiting error tolerance and precision.
Innovation Solution
A method that calculates a combination of machining length and machining depth for the balancing device, ensuring the machining length is longer than other permissible combinations and the machining depth is shallower, allowing for a larger peripheral region balancing removal process, thereby improving error tolerance and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the machining depth is increased to compensate for unbalance, then the balancing effect is improved, but the machining complexity and potential damage to the component increase
Solution Approach 1:
The patent transitions from single-dimensional deep machining to two-dimensional distributed machining by extending the balancing removal process across a larger peripheral region. This dimensional change allows achieving the same balancing effect with shallower cuts distributed over a longer arc, thereby improving precision while reducing machining complexity and risk of component damage
2Manufacturing precision
If the machining depth is increased to achieve better balancing, then the balancing effect is improved, but the risk of component damage increases
Solution Approach 1:
The patent distributes the material removal across a larger peripheral region with shallower depths, changing from a concentrated deep-cut approach to a distributed shallow-cut approach. This dimensional redistribution reduces the risk of component damage while maintaining balancing precision by spreading the machining load across multiple locations
3Ease of manufacture
If the machining removal is concentrated in a small peripheral region, then the machining process is simpler, but the error tolerance is reduced
Solution Approach 1:
The patent extends the balancing removal process over a larger peripheral region, utilizing the peripheral dimension to improve error tolerance. By distributing the machining across multiple locations along the periphery, the system gains robustness against positioning errors and measurement uncertainties, achieving better error tolerance without significantly increasing machining complexity
Data Source
AI summary
The invention relates to a method for determining a balancing removal process for a balancing device for balancing a rotationally symmetrical component, particularly a rotor component, particularly of a turbomachine, a combination of machining lengths and depths being calculated, taking into account a pre-defined maximum machining length and minimum machining depth, in such a way that, with reliable combinations for compensating the same unbalance, the machining length of the calculated combination is longer than the machining length of at least one other permissible combination and, at the same time, the machining depth of the calculated combination is shallower than the machining depth of said other combination.