Polygon Machining Interference Inference for Eccentric Rotary Tool Paths
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
When machining a polygon on a workpiece at a position eccentric from the rotation axis, the rotary tool needs to move extensively, potentially causing interference between the tool and the machine tool structure, which existing techniques fail to predict and prevent effectively.
Innovation Solution
An estimation device that receives model information about the machine tool structure, determines the initial position and phase of the polygon and rotary tool, and calculates their moving ranges to estimate potential interference before machining, using a numerical controller to adjust positions and phases to avoid collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rotary tool moves extensively to machine a polygon at a position eccentric from the rotation axis, then the polygon can be machined at the desired position, but interference between the rotary tool and machine tool structure occurs
Solution Approach 1:
The estimation device performs preliminary calculation of the moving range of the rotary tool and workpiece before actual machining begins. By determining the initial position, initial phase, and positional relationship between the center axis of the polygon and rotation axis of the rotary tool, the system calculates the required moving range in advance and estimates whether interference will occur, allowing preventive measures to be taken before machining starts
Solution Approach 2:
The estimation device creates a virtual model of the machining process by calculating moving ranges based on model information about the machine tool structure. This virtual simulation allows the system to predict interference without physically executing the machining operation, enabling safe parameter selection before actual tool movement
2Object-affected harmful factors
If the initial position and phase of the rotary tool are optimized to reduce moving range, then interference is reduced, but the ability to machine at eccentric positions is compromised
Solution Approach 1:
The estimation device evaluates multiple combinations of parameters including initial position of the center axis of the polygon, initial phase of the rotary tool, and positional relationship between the center axis and rotation axis. By calculating moving ranges for different parameter sets, the system identifies optimal parameter combinations that enable eccentric polygon machining while minimizing the moving range and avoiding interference
Data Source
AI summary
An inference device includes: a reception unit for receiving model information of a structure of a machine tool; a determination unit for determining, at the start of machining a polygon, an initial position of a center axis of the polygon, an initial phase of a rotary tool, and a position relationship between the center axis and a rotary axis of the rotary tool; a calculation unit for calculating a movement range of at least one of the rotary axis of the rotary tool and a rotary axis of workpiece based on the initial position of the center axis of the polygon, the initial phase of the rotary tool, and the position relationship between the center axis of the polygon and the rotary axis of the rotary tool; and an inference unit for inferring whether interference will occur in the machine tool, based on the model information and the movement range.