Press Forming Support Block Layout for Uniform Load Control
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Solution Overview
Problem
Press forming devices vary in die positioning, leading to inconsistent load distribution and deflection, making it difficult to apply a constant load uniformly, especially when forming workpieces with small edge radii like automobile character lines.
Innovation Solution
A press forming device with a die unit and support blocks arranged around the die unit between the bolster and slider, where the support blocks are positioned outward from the pressing points along the line extending from a reference point on the load control region, ensuring a uniform load application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the same die unit is used across different press devices, then device complexity is reduced, but manufacturing precision deteriorates due to varying load distribution
Solution Approach 1:
The invention introduces support blocks as separate, adjustable components that can be added to or removed from the die unit configuration. This segmentation allows the same die unit to be adapted to different press devices by adjusting the support block arrangement, thereby maintaining manufacturing precision across different equipment while using standardized dies.
Solution Approach 2:
The invention enables adjustment of support block positions and quantities to change the mechanical parameters of the press forming system. By modifying these parameters, the load distribution can be optimized for each specific press device, ensuring consistent manufacturing precision even when using the same die unit across different equipment.
2Productivity
If pressing points are positioned to cover the entire workpiece, then productivity is improved, but manufacturing precision deteriorates due to inconsistent load control in specific regions
Solution Approach 1:
The invention implements local quality by positioning support blocks specifically around the load control region rather than uniformly across the entire workpiece. This localized approach ensures precise load control in the critical ridge line formation area while maintaining efficient pressing point coverage elsewhere, thus achieving both productivity and manufacturing precision.
3Manufacturing precision
If support blocks are arranged to ensure uniform load distribution, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The invention designs support blocks with universal functionality that allows them to be used across different press devices and workpiece configurations. By creating a standardized, multi-functional support block system, the invention achieves uniform load distribution and high manufacturing precision without proportionally increasing device complexity, as the same support blocks can be reused in various configurations.
Data Source
AI summary
In a press forming device and a press forming method for press-forming a workpiece that includes a load control region to which a constant load is to be applied, the press forming device includes a die unit that includes an upper die and a lower die that sandwich the workpiece; a slider that holds the upper die; a bolster that holds the lower die; a pressing mechanism that presses the slider toward the bolster at a plurality of pressing points; and one or more support blocks arranged around the die unit, between the bolster and the slider. The support block is arranged farther outward than the pressing points, on a line that extends, in an arrangement direction of the pressing points, from a reference point on an end portion of the load control region.