Robot Machining Contact Point Control for Free-Form Surfaces
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Machining efficiency and accuracy are compromised by the use of fixed contact points in machining tools, leading to low efficiency and potential gouges or collisions, especially when dealing with work pieces having free-form surfaces or boundaries.
Innovation Solution
A method and system that allow for a customizable contact point height on machining tools, with a robot system to adjust and check the contact point in a virtual environment to prevent collisions and maintain constant feed rates, enabling adaptive feed rates and tool path flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed contact point on the machining tool is used, then the machining process is simple to program, but the machining efficiency is low and collisions may occur
Solution Approach 1:
The patent implements dynamic contact point adjustment by allowing the contact point height on the machining tool to be variable during the machining process. The system automatically adjusts the contact point position based on the workpiece geometry and machining path, transforming the fixed contact point into a dynamic parameter that adapts to different machining conditions, thereby improving efficiency without significantly increasing programming complexity
Solution Approach 2:
The patent changes the contact point parameter from a fixed value to a variable parameter that can be adjusted during machining. By modifying the contact point height parameter dynamically based on the machining path and workpiece characteristics, the system optimizes machining efficiency while maintaining manageable programming complexity through automated parameter adjustment
2Reliability
If a fixed contact point is used, then programming is easier, but collisions or gouges may occur between the tool and work piece
Solution Approach 1:
The patent performs preliminary virtual environment checking of the machining path before actual machining. The system simulates the machining process in a virtual environment to detect potential collisions or gouges caused by fixed contact points, and pre-adjusts the contact point position to avoid these issues, ensuring reliability before the actual machining operation begins
Solution Approach 2:
The patent implements a feedback mechanism where the machining path and contact point position are continuously monitored and adjusted. The system uses information from the virtual environment simulation and actual machining feedback to dynamically adjust the contact point position, preventing collisions and gouges while maintaining manageable programming complexity through automated control
3Productivity
If the contact point height is changed during machining, then machining efficiency improves, but feed rate control becomes more complex
Solution Approach 1:
The patent implements self-service feed rate control where the system automatically adjusts the feed rate based on the contact point height changes. The control system monitors the contact point position and autonomously modifies the feed rate parameters to maintain optimal machining conditions, improving efficiency while keeping the control system manageable through automated self-adjustment mechanisms
Data Source
AI summary
The present invention discloses a method and system for machining a work piece by a machining tool, and a robot system using the same. The method comprises: defining a customized contact point on the machining tool by setting a contact point height of the machining tool; moving the machining tool against the work piece to apply predefined machining feeds. Compared with the existing prior arts, the proposed method and system improves machining efficiency and accuracy. With the method and system according to the present disclosure, high machining efficiency could be achieved as well as collisions could be avoided.