Automated Mold Polishing Toolpaths for Freeform Surface Finishing
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Solution Overview
Problem
The process of finish polishing freeform geometry in mold manufacturing is laborious, time-consuming, and highly dependent on human intervention, leading to inefficiencies, high costs, and limited scalability.
Innovation Solution
An automated mold polishing system comprising a processor and memory that determines a polish strategy, selects appropriate polishing tools, and generates toolpaths based on the geometry of the mold surface, enabling automated and efficient polishing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual polishing is used for finish polishing freeform geometry, then human skill and flexibility are utilized, but the process becomes laborious, time-consuming, and expensive
Solution Approach 1:
The patent replaces manual mechanical polishing operations with an automated robotic system that uses computer vision guidance and automated toolpath execution. The robotic arm equipped with polishing tools substitutes human hands, while the vision system replaces human eyes for inspection and guidance, thereby increasing productivity while maintaining polishing quality through automated control.
Solution Approach 2:
The system dynamically adjusts polishing parameters such as toolpath speed, pressure, and tool orientation based on real-time vision feedback and pre-programmed strategies. This allows the automated system to adapt to different surface geometries and achieve consistent polishing quality across various freeform surfaces without manual intervention.
2Reliability
If manual polishing is used, then human judgment is applied, but the process lacks repeatability and scalability
Solution Approach 1:
The patent implements a closed-loop feedback system where the vision system continuously monitors the polishing process and surface quality, and this information is fed back to the control system to adjust toolpath parameters in real-time. This feedback mechanism ensures consistent polishing quality and repeatability across different production runs while allowing the system to adapt to variations in the workpiece.
Solution Approach 2:
The system uses vision systems to create digital copies or models of the workpiece surface geometry, which are then used to generate and execute automated toolpaths. This digital copying approach enables the polishing process to be replicated consistently across multiple parts while maintaining the ability to adapt to different geometries through software programming.
3Productivity
If automated polishing is implemented, then productivity and repeatability are improved, but system complexity increases
Solution Approach 1:
The robotic polishing system is designed with multi-functionality, where a single robotic arm can perform multiple polishing operations on different surfaces and geometries by changing tools and toolpaths. The vision system serves multiple purposes including guidance, inspection, and measurement. This universality reduces the need for multiple specialized devices, thereby managing system complexity while maintaining high productivity.
4Ease of operation
If manual polishing is used, then flexibility in handling complex geometries is maintained, but labor costs and time consumption increase
Solution Approach 1:
The robotic polishing system incorporates dynamic capabilities through real-time vision guidance and adaptive toolpath generation that can handle complex freeform geometries. The system dynamically adjusts tool orientation, speed, and pressure based on the local surface geometry, providing the flexibility previously associated with manual operations while executing at automated speeds to reduce cycle time.
Data Source
AI summary
An apparatus for automated mold polishing is disclosed. In an embodiment, the apparatus comprises at least a processor and a memory communicatively connected to the processor. The memory containing instructions configuring the at least a processor to receive a finish assignment for at least a surface of a part for manufacture. The processor then determines a polish strategy for the at least a surface as a function of a geometry of the at least a surface. A polishing tool may then be selected for the at least a surface as a function of the finish assignment and the polish strategy for the at least a surface. A reachable area is then determined of the at least a surface as a function of the polishing tool. The processor then generates a toolpath as a function of the reachable area.