Basis-Vector Tool Positioning for Ridge-Line Burr Cutting
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Solution Overview
Problem
Existing methods for calculating the position of a tool to remove burrs or chamfer a workpiece are inaccurate, leading to insufficient or excessive cutting, which destabilizes the machining process.
Innovation Solution
A computation device calculates the first position of a tool to cut a ridge line on a workpiece by acquiring machining target data and using basis vectors to determine the tool's position based on the workpiece's geometry, allowing for precise cutting of a predetermined machining width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing methods (first method or second method) are used to calculate tool position, then calculation can be performed, but the calculated tool position is inaccurate leading to insufficient or excessive cutting
Solution Approach 1:
The patent performs preliminary calculations of basis vectors (first basis vector perpendicular to the second central axial line, and second basis vector perpendicular to the first basis vector) before determining the final tool position. These preliminary vectors establish a coordinate system that enables accurate position calculation by considering the workpiece geometry, tool geometry, and machining width in advance
Solution Approach 2:
The patent transitions from simple 2D or 1D position calculation to 3D spatial position determination by introducing multiple basis vectors that define a three-dimensional coordinate system. This dimensional expansion allows accurate representation of the tool position in space, accounting for the spherical cutting surface, tip angle, and eccentric distance simultaneously
2Productivity
If tool position is calculated using existing methods, then machining can proceed, but the cutting process becomes unstable
Solution Approach 1:
The patent incorporates feedback by continuously calculating the tool position based on the actual workpiece geometry parameters (first radius, second radius, eccentric distance) and tool parameters (third radius, tip angle). The basis vectors are recalculated to reflect the actual spatial relationships, ensuring the tool position adapts to the specific geometric conditions of each machining scenario
Solution Approach 2:
The patent dynamically adjusts multiple parameters including the basis vectors, tool position coordinates, and cutting depth based on the workpiece geometry and tool configuration. By changing these parameters according to the specific machining conditions (different radii, eccentric distances, and tip angles), the system maintains stable cutting across varying scenarios
Data Source
AI summary
A computation device for computing the position of a tool for cutting a ridge line formed by a cylinder surface and a peripheral wall surface forming a through-hole passing through an article being processed in the shape of a column, the computation device computing the position on the basis of a first foundation vector and a second foundation vector in a plane that is perpendicular to a tangent line of the ridge line, data being processed, an ellipse formed by the plane and the column, a prescribed process width, the radius of the tool, and the angle of a distal-end corner of the tool.