Wave Generator Conical Section for Bearing Mounting
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Solution Overview
Problem
The difficulty in producing a stress wave transmission lies in efficiently mounting a radially flexible roller bearing onto a wave generator, as the bearing's circular cross-section does not match the non-circular bearing seat, requiring deformation or complex alignment.
Innovation Solution
A wave generator design featuring a conical section adjoining the main section, allowing the roller bearing to be axially pushed onto the bearing seat, where it automatically assumes the required shape, with the cone section serving as a guide surface to facilitate easy mounting without deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the roller bearing is directly mounted onto the non-circular bearing seat, then the bearing must be deformed radially, but this causes mounting difficulty and potential damage
Solution Approach 1:
The conical section is provided in advance on the wave generator, allowing the roller bearing to be preliminarily positioned and guided before final mounting. This preliminary action facilitates the transition from circular to non-circular shape during the mounting process itself, rather than requiring pre-deformation.
Solution Approach 2:
The conical section acts as an intermediary element between the circular roller bearing and the non-circular bearing seat. It provides a transition surface that guides the bearing through the shape transformation, mediating the geometric incompatibility between the two components.
2Ease of manufacture
If the roller bearing is deformed radially to match the bearing seat shape, then mounting is possible, but this may cause bearing damage or reduced reliability
Solution Approach 1:
The conical section enables preliminary positioning and gradual deformation during the mounting process, allowing the bearing to adapt to the non-circular shape in a controlled manner rather than through sudden or forced deformation that could damage the bearing.
Solution Approach 2:
The conical section facilitates a gradual change in the bearing's geometric parameters (from circular to non-circular) through the mounting process. The taper angle and length are designed to control the rate and manner of parameter change, ensuring the bearing material can adapt without exceeding its elastic limits.
3Manufacturing precision
If a complex alignment process is used to match the circular bearing with the non-circular bearing seat, then proper fitting is achieved, but mounting time and complexity increase
Solution Approach 1:
The conical section serves as a self-aligning intermediary that automatically guides the roller bearing into the correct orientation and position. The taper geometry provides inherent alignment cues that eliminate the need for complex external alignment procedures, tools, or operations.
Solution Approach 2:
The conical section enables the mounting process to be self-aligning and self-guiding. The geometry of the cone automatically ensures proper orientation of the bearing relative to the bearing seat without requiring external alignment fixtures, skilled alignment operations, or complex procedures.
Data Source
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AI summary
The invention relates to a shaft generator for a voltage wave transmission, which has a bearing seat for a radially flexible rolling bearing in a main section. The shaft generator is characterized in that it has a conical section adjoining the main section in the axial direction and tapering away from the main section in one direction.