Metal Panel Machining with Tilted Tool Paths for Continuous Slopes
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Solution Overview
Problem
Current mechanical machining systems for metal panels are inefficient in producing continuous slopes, leading to surface discontinuities and requiring manual grinding, due to their inability to handle theoretical sloping machining trajectories and reliance on complex adaptation modules that are not easily adaptable or modifiable.
Innovation Solution
An automated mechanical machining system with a slope management module that determines actual sloping machining trajectories from theoretical sloping trajectories, using an elementary adaptation function to transform simple theoretical machining trajectories into actual sloping trajectories, allowing the machining tool to be oriented at a tilt angle greater than 3°, enabling precise and efficient machining of oblique slopes without direct surface area measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex adaptation module is used to transform theoretical machining trajectories into actual trajectories, then the system can handle surface variations, but the device complexity increases and the module becomes difficult to adapt or modify
Solution Approach 1:
The adaptation module is segmented into two distinct parts: a simple geometric transformation module that handles basic coordinate transformations, and a slope management module that specifically manages oblique slope machining. This segmentation reduces the complexity of each individual module while maintaining the overall adaptability to handle various surface variations.
Solution Approach 2:
The slope management functionality is extracted from the complex adaptation module and implemented as a separate, dedicated slope management module. This extraction allows the main adaptation module to remain simple while the specialized slope handling capabilities are provided by the separate module, improving both simplicity and adaptability.
2Device complexity
If the machining tool is kept aligned with the holding tool along the normal axis, then the machining system is simple to control, but it cannot produce continuous slopes and creates surface discontinuities
Solution Approach 1:
The system transitions from a static alignment where the machining tool is always aligned with the holding tool along the normal axis, to a dynamic alignment where the machining tool can be tilted at an angle relative to the normal axis. This dynamic adjustment allows the machining tool to follow oblique slope trajectories while the holding tool maintains its position, enabling continuous slope production without compromising control simplicity.
Solution Approach 2:
The system adds a tilt angle dimension to the machining tool orientation, allowing it to deviate from the normal axis by a controlled angle. This dimensional change enables the machining tool to access and machine oblique slopes that cannot be reached with normal-axis-only alignment, while the tilt angle is managed through the slope management module to maintain overall system simplicity.
3Manufacturing precision
If multiple successive passes are used to machine zones of low and high thickness, then the desired thickness can be achieved, but steps are formed creating surface discontinuities that require manual grinding
Solution Approach 1:
The slope management module enables continuous machining action by allowing the machining tool to follow smooth oblique slope trajectories in a single pass or fewer passes. This eliminates the need for multiple successive passes that create steps, and consequently eliminates the need for manual grinding to remove these steps, significantly reducing total machining time while maintaining precise thickness control.
4Manufacturing precision
If a tilt angle greater than 3° is applied to the machining tool, then oblique slopes can be machined precisely, but the coordination between machining tool and holding tool becomes more complex
Solution Approach 1:
The slope management module acts as an intermediary between the simple geometric transformation module and the machining tool control system. It receives the basic transformed trajectories and adds the necessary tilt angle adjustments, then outputs the final coordinated trajectories to both the machining tool and holding tool. This intermediary approach manages the coordination complexity centrally while allowing the individual tool controls to remain relatively simple.
Data Source
AI summary
An automated mechanical machining system for machining a metal panel having a first face and a second face. The automated mechanical machining system further including at least one machining tool, at least one holding tool, a control module configured to control the at least one machining tool and the holding tool in a coordinated manner, a matching module configured to determine simple actual machining paths TRAJr1 from, on the one hand, predetermined simple theoretical machining paths TRAJt1 and, on the other hand, measurement of the actual surface SURFr of the second face and a slope management module configured to determine sloping actual machining paths TRAJr2 from sloping theoretical machining paths TRAJt2, the simple theoretical machining paths TRAJt1 and the simple actual machining paths TRAJr1.