Ball Joint Domed Cover Plate Threading After Deformation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional ball joints with domed cover plates are not pre-tapped for lubricant fittings, making it difficult to apply lubricant after installation, as the cover plate is deformed into a flatter shape for securing, which does not accommodate pre-drilled and tapped threads for lubricant fittings.
Innovation Solution
A method of manufacturing ball joints involves inserting a cover body with a threaded bore into a housing, deforming it to secure it, and then tapping the threaded bore to match the desired thread size and class of fit for a lubricant fitting, allowing for the installation of a grease zerk or similar fitting after deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the cover plate is deformed into a flatter shape for securing to the housing, then the cover plate is securely retained in the housing, but the cover plate cannot accommodate pre-drilled and tapped threads for lubricant fittings
Solution Approach 1:
The threaded bore is formed in the domed cover plate before the deformation process. This preliminary action ensures that the threads are created when the cover plate has sufficient thickness and structural integrity, allowing for proper thread formation. After deformation secures the cover plate to the housing, the pre-formed threaded bore remains intact and ready to receive lubricant fittings, thus resolving the contradiction between secure retention and fitting accommodation
2Strength
If the cover plate is deformed over the housing to secure retention, then the cover plate is securely attached, but it becomes difficult to apply lubricant after installation
Solution Approach 1:
The threaded bore is prepared in advance on the domed cover plate before deformation. This preliminary threading operation enables lubricant fittings to be installed after the cover plate is secured to the housing, making lubricant application easy without compromising the secure attachment achieved through deformation
3Strength
If the cover body is deformed to expand the outer perimeter into the groove, then the cover body is securely retained, but the threaded bore diameter is reduced
Solution Approach 1:
The threaded bore is formed in the cover body before deformation occurs. By performing the threading operation while the cover body is still in its pre-deformed state with larger diameter, the threads can be properly formed with correct dimensions. The subsequent deformation process secures the cover body to the housing while the pre-formed threads remain functional, resolving the contradiction between retention strength and threaded bore precision
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
Enables the secure retention of a lubricant fitting within the ball joint, allowing for easy application of lubricant post-installation, enhancing the functionality and usability of ball joints with domed cover plates.
Implementation Method 1
deforming the cover body into retaining engagement with the housing by pressing against the convex side until the cover body is at least partial deformed and the outer perimeter is expanded
Data Source
AI summary
A method of manufacturing a vehicle suspension component includes inserting a cover body into an aperture of a housing, the cover body being disposed about a central axis concentric with the aperture of the housing, the cover body having a convex side and a concave side and an outer perimeter disposed about the central axis, the cover body defining a threaded bore concentric with the central axis, and deforming the cover body into retaining engagement with the housing by pressing against the convex side until the cover body is at least partial deformed and the outer perimeter is expanded compared to a pre-deformed state of the cover body.