Press Die Assembly With Modulus-Graded Support Blocks
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Solution Overview
Problem
Existing press die assemblies suffer from uneven pressure distribution during press forming, particularly in the central portion of the workpiece, leading to reduced forming accuracy.
Innovation Solution
The press die assembly incorporates fixed and movable dies with support blocks that have varying Young's moduli, increasing with proximity to the central portion, to maintain consistent pressing pressure and resist deformation, thereby enhancing forming accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform support blocks are used across the forming surface, then the structure is simple and easy to manufacture, but the pressing pressure becomes uneven in the central portion
Solution Approach 1:
The patent applies local quality by varying the Young's modulus of support blocks based on their position on the forming surface. Support blocks in the central portion have higher Young's modulus than those at the peripheral portions, creating non-uniform material properties that compensate for the natural pressure distribution pattern and achieve uniform pressing pressure across the workpiece.
2Manufacturing precision
If support blocks with higher Young's modulus are used in the central portion, then uniform pressing pressure is achieved, but the device complexity increases
Solution Approach 1:
The patent implements parameter changes by systematically varying the Young's modulus parameter of support blocks according to their spatial position. The Young's modulus increases from peripheral portions toward the central portion, creating a gradient distribution that optimizes pressure uniformity while maintaining a systematic and manageable design approach.
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 configuration ensures uniform pressing pressure distribution, preventing deformation of support blocks before the metal sheet, and maintains high forming accuracy of the press die assembly.
Implementation Method 1
Young's moduli of the fixed-side support blocks increase with increasing proximity to a central portion of the first forming surface in the planar direction. Young's moduli of the movable-side support blocks increase with increasing proximity to a central portion of the second forming surface in the planar direction.
Data Source
AI summary
A press die assembly includes a fixed die and a movable die. The fixed die includes a fixed-side forming section that includes a first forming surface, and multiple metal fixed-side support blocks arranged in a planar direction. The fixed-side support blocks support the fixed-side forming section from a side opposite to the first forming surface. The movable die includes a movable-side forming section that includes a second forming surface that faces the first forming surface, and multiple metal movable-side support blocks arranged in the planar direction. The movable-side support blocks support the movable-side forming section from a side opposite to the second forming surface. The Young's moduli of the fixed-side support blocks increase with increasing proximity to a central portion of the first forming surface. The Young's moduli of the movable-side support blocks increase with increasing proximity to a central portion of the second forming surface.