Rolling Bearing Encoder Mounting for High-Speed Signal Stability
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Solution Overview
Problem
The mechanical strength of the securing armature in rolling bearings is compromised during high-speed rotation, leading to potential displacements and deformations that affect the reliability of rotation parameter detection by the encoder.
Innovation Solution
A rolling bearing design that secures the encoder to the internal rotating member using a frame with a stop section between the inner ring and the outer segment of the ring, which limits displacements and deformations, ensuring reliable signal detection even at high rotational speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the encoder is secured to the rotating member using a conventional armature, then the encoder can detect rotation parameters, but the mechanical strength is compromised during high-speed rotation causing displacements and deformations
Solution Approach 1:
The invention adds a new dimensional element by introducing a reinforcing frame that extends radially outward from the armature. This radial extension creates an additional structural dimension that distributes mechanical stresses away from the encoder mounting points, preventing the displacements and deformations that occur in conventional armatures during high-speed rotation.
Solution Approach 2:
The reinforcing frame is integrated with the armature to form a composite structure. This composite design combines the rotational function of the armature with the structural reinforcement of the frame, creating a unified component that maintains both measurement precision and mechanical strength under high-speed operating conditions.
2Reliability
If the encoder track positioning varies relative to the sensor during rotation, then signal detection reliability deteriorates, but maintaining rigid fixation increases mechanical stress on the rotating component
Solution Approach 1:
The reinforcing frame extends into a radial dimension that provides structural support without interfering with the axial positioning of the encoder track. This additional dimensional support prevents track deformation while maintaining proper sensor alignment, thereby ensuring signal detection reliability without imposing excessive mechanical stress on the rotating component.
Solution Approach 2:
The reinforcing frame is strategically positioned to provide localized structural support at critical stress points in the armature. This localized reinforcement prevents deformations that would affect encoder track positioning and signal detection, while avoiding unnecessary material in non-critical areas, thus reducing overall mechanical stress on the rotating component.
Data Source
Figure 1~2
Figure 3~3a
Figure 4~4a
AI summary
The invention concerns a bearing, the inner member (1) of which comprises a collar (5) having a raceway (6) and an inner wall (8) assembled around an outer bearing surface (9) of a hub (4) of the member (1), said bearing surface comprising a groove (10) in which a ring (11) is arranged having an inner segment (11a) axially immobilised in said groove and an outer segment (11b) that projects to form an axial stop for the assembly of the collar (5) on the hub (4), the member (1) being equipped with an encoder (12) having a track (12a) capable of generating a signal representative of its rotation, said encoder comprising a frame (13) securing it in rotation to the member (1), the frame (13) having a stop section (13b) that is interposed between the collar (5) and the outer segment (11b), the collar (5) abutting axially on the segment (11b) via said stop section.