Rotational Surface Machining with Inclination-Matched Cutting Edge
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Solution Overview
Problem
Existing methods struggle to accurately machine various rotationally symmetric surfaces, leading to inconsistencies in surface roughness and deviations from target shapes.
Innovation Solution
A method involving a linear or curved cutting edge that is fed in contact with the rotationally symmetric surface, dividing the edge into regions to ensure the inclination of the cutting edge matches the target inclination of the surface, using a three-dimensional orthogonal coordinate system to control the feed, and employing a CNC lathe for precise machining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional cutting method is used to machine rotationally symmetric surfaces, then the machining process is simple, but the surface roughness is inconsistent and the shape accuracy deviates from target
Solution Approach 1:
The cutting edge is dynamically fed along a calculated three-dimensional track that varies the inclination angle continuously to match the target surface geometry. This dynamic adjustment of cutting parameters enables consistent surface roughness and accurate shape reproduction while machining rotationally symmetric surfaces
Solution Approach 2:
The inclination angle of the cutting edge is changed as a parameter to match the target surface inclination at each position. By varying the cutting edge orientation according to the surface geometry requirements, the method achieves consistent surface quality and shape accuracy across the entire rotationally symmetric surface
2Manufacturing precision
If the cutting edge is fed without controlled inclination matching, then the machining operation is fast, but the surface finish quality deteriorates
Solution Approach 1:
The optimal feed track and inclination angles are calculated in advance based on the target surface geometry. This preliminary calculation allows the cutting edge to follow a pre-determined path that ensures high surface finish quality while minimizing unnecessary movements and machining time
3Duration of action of stationary object
If the cutting edge is used without inclination control, then the setup is simple, but the wear distribution is uneven reducing tool life
Solution Approach 1:
The feed control system uses calculated track information to continuously adjust the cutting edge inclination and position. This controlled feeding ensures uniform contact between the cutting edge and the workpiece surface, distributing wear evenly across the cutting edge and extending tool life
Data Source
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AI summary
A method for manufacturing a machine component having a rotation symmetry plane includes machining a rotation symmetry plane by feeding a linear or curved cutting edge while the cutting edge is in contact with a point of cutting of the rotation symmetry plane. The machining a rotation symmetry plane includes determining a track of the cutting edge and feeding the cutting edge along the track. The determining a track determines the track in accordance with a condition that (1) a first end portion of the cutting edge is positioned at a cutting start position of the rotation symmetry plane, (2) N (N being an integer not smaller than 2) regions defined by division of the cutting edge successively come in contact with the rotation symmetry plane, (3) a first inclination corresponding to an inclination of a tangent line at a point of cutting of each of the N regions is equal to a second inclination corresponding to a target inclination of a tangent line which passes through the point of cutting and comes in contact with the rotation symmetry plane in a cut plane of the rotation symmetry plane including a Z axis representing an axial line of rotation and the point of cutting, and (4) a second end of the cutting edge is positioned at a cutting end position of the rotation symmetry plane.