Rotation-Symmetric Component Machining With 3D Cutting Path Control
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Solution Overview
Problem
Current machining methods fail to accurately manufacture machine components with rotation symmetry planes, particularly those having ridgelines at angles greater than 0° and smaller than 90° with respect to the axial line of rotation, due to limitations in precision and surface roughness.
Innovation Solution
A method involving a linear cutting edge positioned at a displaced start point along the Y-axis, with a track having X, Y, and Z components, allowing the cutting edge to be fed along a precise path that maintains contact with the machine component, ensuring accurate angle formation and surface quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a linear cutting edge is fed in a direction transverse to the axial line of rotation, then machining efficiency and surface smoothness are improved, but accuracy of the angle formed by the ridgeline with respect to the axial line of rotation deteriorates
Solution Approach 1:
The cutting edge position is controlled in three-dimensional space with X, Y, and Z components. The cutting edge is positioned at a start point displaced from the X-axis along the Y-axis direction, and fed along a spatial track that includes movements in all three directions, enabling precise angle formation while maintaining efficient transverse feeding
Solution Approach 2:
The machining method changes the feeding parameters by introducing Y-axis displacement and Z-axis movement components to the traditional transverse feeding. The track is defined with specific X, Y, and Z components that adjust the cutting path parameters to achieve both efficiency and angle accuracy
2Device complexity
If the cutting edge is positioned on the X-axis, then the machining path is simplified, but the accuracy of the rotation symmetry plane deteriorates
Solution Approach 1:
The cutting start position is displaced from the X-axis along the Y-axis direction, introducing a Y-component to the cutting path. This three-dimensional positioning (with X, Y, and Z components) enables accurate rotation symmetry plane machining while the control system manages the increased path complexity
3Ease of manufacture
If a conventional machining method is used for columnar shapes, then the machining process is simple, but the accuracy of long components in the axial direction deteriorates
Solution Approach 1:
The feeding parameters are modified to include Z-axis movement components in addition to the traditional X and Y components. This parameter adjustment enables accurate machining of long columnar components by controlling the cutting edge position and movement in all three dimensions throughout the machining process
Data Source
AI summary
A manufacturing method, a manufacturing apparatus, a computer readable recording medium, and a program for manufacturing a machine component having a rotation symmetry plane are provided. According to one embodiment, the manufacturing method includes positioning a linear cutting edge (2A) inclined at an angle greater than 0° and smaller than 90° with respect to a Z axis at a cutting start position displaced from a position on an X axis along a direction of a Y axis in a three-dimensional orthogonal coordinate system in which an axial line of rotation of a rotation symmetry plane (1A) is defined as the Z axis, an axis in a radial direction of the rotation symmetry plane is defined as the X axis, and an axis orthogonal to both of the Z axis and the X axis is defined as the Y axis and machining the rotation symmetry plane (1A) by feeding the cutting edge (2A) from the cutting start position along a track having an X axis component, a Y axis component, and a Z axis component while the cutting edge is in contact with a rotating machine component (1).