Rotor Balancing Mark With Varying Depth And Width
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rotor balancing methods for fluid machines, such as turbochargers, often compromise the strength and integrity of the rotor while being inconvenient, labor-intensive, and difficult to access for balancing.
Innovation Solution
A rotor with integrated balancing features, including an elongate balancing mark with varying width and depth, strategically located in the inter-blade area of the compressor wheel, which is designed to reduce unbalance and tailored to specific stress profiles of the wheel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional balancing methods are applied to the rotor, then balancing accuracy is improved, but rotor strength and integrity deteriorate
Solution Approach 1:
The balancing mark is designed with non-uniform depth and width characteristics, creating localized material removal patterns that provide precise balancing control. The varying depth (first end deeper than second end) and varying width along the arcuate path enable fine-tuned mass adjustment while preserving overall rotor strength through strategic material distribution.
Solution Approach 2:
The balancing mark extends in multiple dimensions with varying depth (axial dimension) and width (radial dimension) along its arcuate path. This multi-dimensional geometry provides additional degrees of freedom for balancing adjustment, allowing precise control of mass distribution without requiring deep or extensive material removal from any single location.
2Manufacturing precision
If conventional balancing methods are applied to the rotor, then balancing precision is improved, but manufacturing complexity increases
Solution Approach 1:
The balancing mark integrates multiple balancing functions into a single geometric feature. By combining varying depth, varying width, and arcuate extension into one continuous mark, the design achieves precise balancing control without requiring multiple separate balancing features or complex multi-step procedures.
Solution Approach 2:
The balancing mark serves multiple functions simultaneously: it provides mass adjustment for balancing, maintains rotor strength through strategic geometry, and offers manufacturing accessibility. The single feature accomplishes what would traditionally require multiple separate operations or features.
3Measurement precision
If conventional balancing methods are applied to the rotor, then balancing accuracy is improved, but manufacturing efficiency decreases
Solution Approach 1:
The balancing mark geometry is pre-designed with optimal depth and width variations determined during the design phase. This preliminary configuration allows for more efficient machining operations, as the tool path and material removal pattern are predetermined, reducing on-machine adjustment time and improving manufacturing efficiency while maintaining balancing accuracy.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A rotor 102 of a fluid machine 112 includes a wheel 113 with a plurality of blades 166. Furthermore, the rotor includes an inter-blade area 168 defined circumferentially between a first blade 141 and a second blade 142 of the plurality of blades with respect to the axis of rotation. Moreover, the rotor includes a balancing mark 172 on the wheel 113 and within the inter-blade area 168. The balancing mark 172 is elongate and has a first end 174 and a second end 176. The first end and the second end are stepped axially into the inter-blade area. The balancing mark 172 extends arcuately between the first end and the second end. The balancing mark has a depth 190 that varies as the balancing mark extends arcuately between the first end and the second end. The balancing mark has a width 180 that varies as the balancing mark extends arcuately between the first end and the second end.