Rotor Mounting Apparatus with Segmented Connection Member for Unbalance Measurement
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Solution Overview
Problem
Existing rotor balancing machines face challenges in accurately measuring unbalance due to the need for radial movement and flexibility, which is compromised by current chuck designs that either allow radial movement or restrict axial movement, leading to repeatability issues and limited accuracy.
Innovation Solution
A mounting apparatus with a connection member comprising an outer and inner ring connected by extension members, which prevents radial movement while allowing inclination, enabling secure radial holding and axial flexibility to accurately measure unbalance in rotors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If clearance is provided at each chuck to enable slight radial movement of the rotor, then the rotor can flex to allow unbalance detection, but balance repeatability deteriorates due to inaccurate radial movement measurement
Solution Approach 1:
The connection member is segmented into an outer ring, an inner ring, and multiple extension members connecting them. This segmentation allows the structure to prevent radial movement while enabling axial inclination, resolving the contradiction between radial stability and axial flexibility for accurate unbalance measurement.
Solution Approach 2:
The connection member acts as an intermediary between the drive mechanism and the chuck, transferring rotational movement while preventing radial movement. This intermediary structure enables accurate unbalance detection by eliminating radial play while maintaining the necessary connection for torque transmission.
2Adaptability or versatility
If a ball joint is provided between the chuck and drive mechanism to allow articulation, then axial movement is enabled, but radial movement is restricted unless clearance is provided
Solution Approach 1:
The connection member provides dynamic adaptability by allowing axial inclination through the relative movement capability between the inner and outer rings, while maintaining radial rigidity. This dynamic structure enables the system to adapt to axial movements without compromising radial measurement precision.
Solution Approach 2:
The connection member exhibits different mechanical properties in different directions: it is rigid in the radial direction to prevent radial movement, while being flexible in the axial direction to allow inclination. This local quality differentiation resolves the contradiction between axial adaptability and radial measurement accuracy.
3Reliability
If the rotor is not permitted to flex, then radial stability is maintained, but unbalance cannot be detected efficiently
Solution Approach 1:
The connection member separates the radial and axial dimensions functionally: it maintains rigidity in the radial dimension for stable measurement while enabling flexibility in the axial dimension for rotor flexing. This dimensional separation allows both radial stability and unbalance detection efficiency to be achieved simultaneously.
Data Source
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AI summary
We provide a mounting apparatus for a rotor, including: a first portion for connection to a driving means, for rotation about a first rotational axis; a second portion comprising a mounting assembly adapted for engaging with a portion of the rotor so as to hold the rotor relative thereto, configured for rotation about a second rotational axis; and a connection member connecting the first portion to the second portion so that rotational movement of the first portion effects rotational movement of the second portion about the second rotational axis, wherein the connection member is configured substantially to prevent radial movement of the second portion relative to the first portion, while enabling inclination of the first rotational axis relative to the second rotational axis.