Bidirectional Flanging Die Compensation With Differential Thread Pitches
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Solution Overview
Problem
Numerically controlled flanging machines face challenges in precision compensation due to superposed deformation in two directions, leading to reduced bending precision and increased structural dimensions or reduced bending load, which is not feasible for multiple-variety and small-batch processing.
Innovation Solution
A precision compensation mechanism for full-automatic bidirectional flanging machines, comprising fine adjustment assemblies for upper and lower dies along X and Y directions, utilizing threaded sleeves and screws with different thread pitches to achieve curve compensation, allowing for precise adjustment and deformation compensation suitable for longer flanging dies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the structural dimension is increased to reduce stress deformation, then the bending precision is improved, but the device complexity and size increase
Solution Approach 1:
The patent applies parameter changes by modifying the thread pitch parameters of the adjusting threaded sleeves. Different thread pitches (P1 and P2) are used to create differential adjustment capabilities, allowing precise compensation of deformation without increasing overall structural dimensions. This enables fine-tuning of the flanging die position to counteract deformation effects.
Solution Approach 2:
The patent segments the adjustment mechanism into multiple independent adjusting threaded sleeves with different thread pitches. Each sleeve can be adjusted independently along the X and Y directions, allowing localized compensation of deformation at different points of the flanging die, thereby improving overall bending precision without requiring a complete structural redesign.
2Manufacturing precision
If the bending load is reduced to minimize deformation, then the bending precision is improved, but the productivity and processing capability deteriorate
Solution Approach 1:
The patent implements preliminary action by pre-adjusting the flanging die position using the threaded sleeve mechanism before the actual bending operation. The deformation compensation is calculated and applied in advance, allowing the system to maintain both high precision and full bending load capability during production, thus avoiding productivity loss.
Solution Approach 2:
The patent employs feedback through the adjustable threaded sleeve mechanism that allows real-time compensation of deformation based on actual working conditions. By monitoring and adjusting the die position in response to deformation effects, the system maintains bending precision without needing to reduce the bending load, thereby preserving productivity.
3Device complexity
If manual adjustment methods are used for deformation compensation, then the device complexity is reduced, but the labor intensity increases and automation level remains low
Solution Approach 1:
The patent applies self-service by enabling the adjustment mechanism to automatically compensate for deformation through the differential thread pitch system. The mechanism itself performs the compensation function without requiring external manual intervention, thereby increasing automation while maintaining relatively simple device structure.
4Device complexity
If conventional straight-line compensation is used, then the device complexity is reduced, but the compensation precision deteriorates for curved deformation
Solution Approach 1:
The patent applies curvature by using multiple adjusting threaded sleeves with different thread pitches arranged along the flanging die. This configuration enables curved compensation paths that match the actual deformation curve, rather than simple straight-line adjustment. The differential thread pitches create a curved adjustment trajectory that precisely follows the deformation pattern.
Solution Approach 2:
The patent transitions from one-dimensional straight-line compensation to two-dimensional curved compensation by incorporating adjustments in both X and Y directions with different thread pitches. This dimensional expansion allows the mechanism to follow the curved deformation path accurately, improving compensation precision for complex deformation patterns.
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 automatic deformation compensation with high precision, suitable for longer flanging dies, by allowing for N different fine adjustments along the X and Y directions, effectively addressing the precision and flexibility issues in numerically controlled flanging processes.
Implementation Method 1
the N adjusting threaded sleeves are threaded into the upper opening or the lower opening of the C-shaped flanging beam along the length direction of the upper die or the lower die, the outer wall surfaces of the N adjusting threaded sleeves are threaded into the upper opening or the lower opening of the C-shaped flanging beam to form N screw thread pairs I with the assumed thread pitch of P1
Implementation Method 2
each of the N adjusting threaded sleeves is threaded with an adjusting screw, and the tip end of each adjusting screw is threaded into the upper die or the lower die; the inner wall surfaces of the N adjusting threaded sleeves are threaded into the upper die or the lower die to form N screw thread pairs II with the assumed thread pitch of P2
Data Source
AI summary
A precision compensation mechanism of a full-automatic bidirectional flanging machine comprises an upper die X-direction fine adjustment assembly, an upper die Y-direction fine adjustment assembly, a lower die X-direction fine adjustment assembly and a lower die Y-direction fine adjustment assembly, wherein the fine adjustment assemblies each comprise N adjusting threaded sleeves, N adjusting screws and a threaded sleeve rotation driving device; wherein the N adjusting threaded sleeves are threaded into an upper opening or a lower opening of a C-shaped flanging beam along the length direction of an upper die or a lower die; the outer wall surfaces of the N adjusting threaded sleeves are threaded into the upper opening or the lower opening of the C-shaped flanging beam to form N screw thread pairs I with the thread pitch of P1.