Double-Row Angular Contact Bearing With Integrated Angle Sensing
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Solution Overview
Problem
Existing double-row angular contact ball bearings require additional measuring devices for accurate rotational position measurement, which complicates installation, occupies internal space, and limits the bearing's ability to support high-speed rotations.
Innovation Solution
An integrated angle measuring system is incorporated into the angular contact ball bearing, featuring a measuring body on an axially projecting ring section and a measuring device on the outer ring, allowing for precise angle detection without external measuring devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an external measuring device is installed to measure rotational position, then measurement precision is improved, but device complexity and installation effort increase
Solution Approach 1:
The patent combines the measuring device with the angular contact ball bearing into a single integrated unit. The measuring device is mounted on the outer ring of the bearing, and the measuring body is attached to the inner ring, creating a unified structure that eliminates separate installation steps and reduces overall system complexity while maintaining high measurement precision
Solution Approach 2:
The integrated structure serves multiple functions simultaneously: the angular contact ball bearing supports radial and axial loads while enabling high-speed rotation, and the integrated measuring device provides precise rotational position measurement. This multi-functionality eliminates the need for separate mounting structures and reduces the number of components required
2Measurement precision
If a measuring device is installed in the bearing plane, then measurement precision is improved, but the axial center is blocked and cable routing is limited
Solution Approach 1:
The patent positions the measuring device on the outer ring in a radial direction rather than blocking the axial center. The measuring body on the inner ring and measuring device on the outer ring create a radial measurement path that leaves the axial center open for cable routing and other component integration, thus solving the spatial conflict
3Measurement precision
If the measuring gap is adjusted during assembly, then measurement precision can be optimized, but assembly time and complexity increase
Solution Approach 1:
The patent designs the integrated structure so that the measuring gap is predetermined by the manufacturing dimensions of the bearing components. The outer ring and inner ring are manufactured with precise dimensional tolerances that automatically establish the correct measuring gap, eliminating the need for time-consuming iterative adjustments during assembly while ensuring high measurement precision
Data Source
AI summary
A double row angular contact ball bearing includes an outer ring and an inner ring having two axially interconnected ring elements. Two outer raceways are provided on the outer ring, and an inner raceway is provided on each ring element, balls running on the outer and inner raceways in two arrows. A ring section of a ring element protrudes axially beyond the outer ring, and a measuring body is provided on the outer cylindrical lateral surface of the ring section. A measuring device with a measuring means which detects the measuring body is provided on the outer ring, said measuring means being positioned radially adjacently to the measuring body and at a distance thereto across a measuring gap.