Lower Roller 2D Adjustment in Round Bending Machines
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Solution Overview
Problem
Conventional round bending machines can only adjust the position of the lower roller along a fixed guide, limiting the flexibility in adjusting the bending radius and sheet metal thickness.
Innovation Solution
A round bending machine design where the lower roller is held in a lower roller block with two linear adjustment units, allowing for independent horizontal and vertical adjustments of the roller, thereby enabling two degrees of freedom in positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lower roller is mounted on a fixed horizontal guide, then the structure is simple and stable, but the position adjustment flexibility is limited to one dimension
Solution Approach 1:
The patent transitions from one-dimensional linear guide adjustment to two-dimensional adjustment by introducing a bearing block that can move both horizontally (via first linear adjustment unit) and vertically (via second linear adjustment unit), enabling the lower roller to be positioned in multiple degrees of freedom
Solution Approach 2:
The roller support structure is divided into separate functional components: a bearing block for holding the roller, a first linear adjustment unit for horizontal positioning, and a second linear adjustment unit for vertical positioning. This segmentation allows independent adjustment in each dimension
2Manufacturing precision
If a single linear adjustment unit is used, then the device complexity is low, but the manufacturing precision of roller positioning is insufficient
Solution Approach 1:
The patent employs two linear adjustment units operating in perpendicular directions (horizontal and vertical) to achieve precise two-dimensional positioning of the lower roller, rather than relying on a single adjustment mechanism
3Device complexity
If the lower roller block is directly supported in sliding bearing, then the device complexity is low, but the friction is high and axial forces cannot be effectively absorbed
Solution Approach 1:
The patent introduces a slide element as an intermediary component between the lower roller block and the sliding bearing. This slide element reduces friction and enables the bearing block to effectively absorb axial forces during the bending process
Data Source
AI summary
A round bending machine for round bending sheet metal comprises an upper roller and at least one lower roller. The lower roller is held in such a way that the position of the lower roller can be adjusted in two degrees of freedom.