Vehicle Wheel Turning Profile for Flat Measurement Reference
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Solution Overview
Problem
Existing vehicle wheel manufacturing methods face challenges in maintaining aesthetic features while securing a flat surface for dimension measurement, particularly when recess-projection shapes are arcuate or have narrowed distances between recess and projection, making it difficult to ensure a stable reference plane for measurement.
Innovation Solution
A manufacturing method that forms a cutting surface on the vehicle wheel's front surface with a target contour shape including a first and second flat portion, each with a width greater than twice the lathe turning feed but less than the distance between adjacent recess or projection portions, ensuring a stable flat surface for measurement while maintaining aesthetic appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the recess-projection shape is formed with arcuate shape or narrowed distance between recess and projection to improve aesthetic feature, then the aesthetic feature is improved, but it becomes difficult to secure a flat surface necessary as reference plane for dimension measurement
Solution Approach 1:
The front surface is segmented into distinct functional zones: an aesthetic recess-projection portion and flat reference plane portions. This segmentation allows the recess-projection shape to provide aesthetic appeal while separate flat portions provide stable reference planes for measurement, resolving the contradiction between aesthetic feature and measurement precision.
Solution Approach 2:
Different regions of the front surface are given different qualities: the recess-projection portion has aesthetic shaping with arcuate forms and narrowed distances, while specific flat portions are maintained with linear shapes and adequate widths to serve as reference planes. This local differentiation allows each region to optimize its specific function without compromising the other.
2Shape
If the recess-projection surface is formed over the whole radial area including radially outer end or radially inner end to improve aesthetic feature, then the aesthetic feature is improved, but it becomes difficult to secure a flat surface necessary as reference plane for dimension measurement
Solution Approach 1:
The front surface is divided into functional segments where recess-projection portions are located in specific radial regions while flat reference plane portions are positioned at the radially outer end and/or radially inner end. This spatial segmentation ensures aesthetic features are present where needed while reference planes are available at the extremes for measurement purposes.
Solution Approach 2:
The solution transitions from considering only the radial dimension to incorporating axial dimension positioning. Flat reference plane portions are positioned not only radially but also axially at specific locations (outer end or inner end), utilizing the third dimension to ensure reference planes are accessible while maintaining aesthetic recess-projection features in other areas.
3Productivity
If lathe turning is performed at high feed speed to increase productivity, then productivity is improved, but the cutting marks may not be radially connected properly affecting surface quality
Solution Approach 1:
The feed speed parameter is optimized to a specific range where cutting marks are radially connected. This parameter change balances productivity and surface quality by selecting a feed speed that ensures proper mark connection while maintaining efficient production rates.
Data Source
AI summary
A manufacturing method of a vehicle wheel includes forming, on a front surface of the vehicle wheel, a cutting surface having a contour shape following a target contour shape that defines the shift of a target position in the axial direction relative to a position in the radial direction. The target contour shape includes an arcuate first fillet portion, a linear first flat portion, and a recess-projection portion having a recess-projection shape in which recessed portions and projection portions are provided alternately. The width of the first flat portion in the radial direction is equal to or more than twice the amount of feed per rotation in the lathe turning but equal to or less than a first predetermined distance.