Sintered Part Height Control via Deformation Elements
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Solution Overview
Problem
Existing methods for producing sintered parts with precise-height molded part heights often require line elevations on the end sides, which are not ideal for mechanical finishing and can result in structural features on the outer surface, limiting precision and functionality.
Innovation Solution
A method involving the joining of sintered parts using deformation elements on the joining faces, where these elements are compressed to achieve the precise height without external surface features, allowing for precise height setting and reduced contact area, enabling efficient embossing and potential sealing of cavities for fluid guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If line elevations are provided on end sides of sintered parts to achieve precise height, then molded part height precision is improved, but structural features remain on outer surface and mechanical finishing becomes difficult
Solution Approach 1:
The deformation elements are pre-formed on the joining faces before the actual height adjustment process. These elements are prepared in advance with specific geometries (protrusions or recesses) that will later be compressed or expanded to achieve the precise height, eliminating the need for post-processing line elevations on the outer surface
Solution Approach 2:
The invention moves the height adjustment mechanism from the outer surface (traditional line elevations on end sides) to the internal joining faces. By placing deformation elements on the joining faces where two parts connect, the height control is achieved through internal structural modification rather than external surface features, allowing the outer surface to remain smooth and finishable
2Manufacturing precision
If deformation elements are compressed to achieve precise height, then height precision is improved and contact area is reduced, but additional structural complexity is introduced
Solution Approach 1:
The deformation elements serve multiple functions: they act as joining features that connect sintered parts together, provide the mechanism for precise height adjustment through compression, and simultaneously reduce contact area to minimize deformation during pressing. This multi-functionality eliminates the need for separate height-adjustment features, thereby reducing overall structural complexity despite the added deformation element geometry
Solution Approach 2:
The deformation elements are placed specifically at the joining faces where local compression is applied, concentrating the height adjustment action to specific localized areas rather than requiring global structural modifications. This localized approach allows precise height control without complicating the entire part structure
3Manufacturing precision
If joining faces are used for deformation elements, then height control is improved, but joining face area is reduced
Solution Approach 1:
The deformation elements occupy only a partial area of the joining face rather than covering the entire surface. This partial coverage is sufficient to provide the necessary compression points for height control while leaving the majority of the joining face area available for load-bearing and connection functions. The excessive action would be to cover the entire face, which is avoided to preserve joining area
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 approach allows for precise height control with minimal pressure, reduces the need for external structural features, and enhances the sintered part's functionality by enabling precise radial and axial dimensions without the need for additional machining, thus improving the part's mechanical properties and usability.
Implementation Method 1
pressing the first sintered joining part and the second sintered joining part together under an axial pressing force effected by means of a press tool
Implementation Method 2
joining the first sintered joining part to the second sintered joining part, wherein the first joining face is oriented toward the second joining face; pressing the first sintered joining part and the second sintered joining part together
Data Source
AI summary
The invention relates to a method for producing a sintered part having a highly precise molded part height, the sintered part being produced from a first sintered joining part that has a first joining surface and a second sintered joining part that has at least a second joining surface. The method comprises at least the following steps: joining the first sintered joining part and the second sintered joining part, the first joining surface being oriented such that it faces the second joining surface; pressing the first sintered joining part and the second sintered joining part against each other under axial compression pressure exerted by a pressing tool, the highly precise molded part height being brought about by pressing the parts against each other; removing the sintered part from the pressing tool as a sintered part having a highly precise molded part height. The invention also relates to a parts set of sintered joining parts.