Camshaft Phaser Cover Welding Positioning
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Solution Overview
Problem
Existing camshaft phaser cover element solutions face challenges with positioning and deformation during welding, high equipment requirements, poor design flexibility, and costly heat treatment processes, limiting their application in precision-driven systems.
Innovation Solution
A cover element for a camshaft phaser featuring a journal and cover plate connected by welding, with a positioning portion on the cover plate to facilitate easy alignment and reduce deformation, using methods like laser or resistance welding, and allowing for separate processing and heat treatment of the journal to improve efficiency and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If friction welding is used to connect the plate member and cylindrical member, then the sealing function is achieved, but the positioning difficulty and part deformation increase
Solution Approach 1:
The patent introduces a positioning structure that is formed in advance on the cover plate, which preliminarily positions the journal before welding occurs. This preliminary positioning action prevents misalignment during the welding process, thereby achieving both reliable sealing and manufacturing precision without the drawbacks of friction welding positioning difficulties.
2Reliability
If friction welding is used to connect the plate member and cylindrical member, then the sealing function is achieved, but the equipment requirements and design flexibility worsen
Solution Approach 1:
The patent replaces the complex friction welding mechanical system with a simpler positioning structure combined with welding. The positioning structure provides the necessary alignment and sealing function without requiring sophisticated friction welding equipment, thereby reducing device complexity while maintaining sealing reliability.
3Strength
If the journal portion is heat treated to increase hardness, then the wear resistance is improved, but the processing difficulty and cost increase
Solution Approach 1:
The patent applies local quality by providing the positioning structure only where needed on the cover plate, rather than heat treating the entire front cover. This localized approach achieves the necessary functional properties (positioning accuracy and wear resistance at the journal interface) while minimizing processing difficulty and cost associated with extensive heat treatment operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution simplifies the welding process, enhances processing efficiency, reduces production costs, and improves material utilization, making it suitable for high-precision applications while maintaining the integrity of the seal with the floating oil seal.
Implementation Method 1
the journal and the cover plate are connected by welding
Implementation Method 2
using methods like laser or resistance welding
Implementation Method 3
using methods like laser or resistance welding
Data Source
AI summary
The present disclosure relates to a cover element for a camshaft phaser and a camshaft phaser. The cover element includes a journal and a cover plate, the journal is used to form sealing engagement with an oil seal, and the journal and the cover plate are connected by welding. A positioning portion is formed on the surface of the cover plate for positioning the journal. The cover element is formed by welding the cover plate and the journal, which are processed separately, so as to conveniently perform different processing of the cover plate and the journal. A positioning portion for positioning the journal is formed on the surface of the cover plate so as to easily position the journal during the welding process, which enables the journal and the cover plate to be easily welded together without requiring complicated fastening. This improves processing efficiency and reduces production costs.