Two-Sided Surface Grinding Method for Wheel Edge Wear Prevention
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Solution Overview
Problem
Conventional two-sided surface grinding methods result in worn wheel edges at the inner and outer corners of grinding wheels, leading to decreased grinding accuracy and a shortened dress interval, as workpieces protrude from the grinding wheel surfaces during processing.
Innovation Solution
A two-sided surface grinding method and apparatus that performs infeed grinding by oscillating the workpiece within the range where surfaces do not protrude from the grinding wheels, followed by through-grinding, allowing the surfaces to pass along the inner and outer peripheries of the grinding wheels, preventing worn wheel edges and maintaining wheel surfaces for a longer period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If infeed grinding is performed by oscillating the workpiece at the infeed grinding position, then the grinding allowance is effectively removed, but the workpiece surfaces stick out from the grinding wheel peripheries causing worn wheel edges and shortened dress interval
Solution Approach 1:
The patent applies dynamics by transitioning from a static infeed grinding position to a dynamic through-grinding motion. The workpiece is fed through the grinding wheels along the inner and outer peripheries, creating a moving contact zone that prevents concentration of wear at fixed corners while maintaining effective material removal
Solution Approach 2:
The patent introduces a new dimensional approach by utilizing the peripheral surfaces (inner and outer edges) of the grinding wheels for through-grinding. This adds a lateral dimension to the grinding contact, distributing the wear across the peripheral surfaces rather than concentrating it at the corner regions, thereby preventing worn wheel edges
2Duration of action of stationary object
If the workpiece is fed to pass along the inner and outer peripheries of the grinding wheels, then worn wheel edges are prevented, but the grinding path becomes more complex
Solution Approach 1:
The patent applies universality by making the grinding wheels perform multiple functions: they conduct both traditional face grinding and peripheral through-grinding. The same grinding wheel surfaces that contact the workpiece during infeed grinding are also utilized for through-grinding along the inner and outer peripheries, maximizing the utility of each wheel surface while preventing worn edges
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances grinding accuracy, prolongs the dress interval, and improves the life of the grinding wheels by preventing wear and maintaining proper wheel shape.
Implementation Method 1
surface grinding for simultaneously grinding the opposite surfaces of a workpiece by a pair of grinding wheels
Data Source
AI summary
In effecting two-sided surface grinding for surface-grinding the opposite surfaces of a workpiece simultaneously by a pair of oppositely disposed grinding wheels, infeed grinding is performed by oscillating the workpiece within the range where the surfaces to be ground of the workpiece do not protrude from the inner and outer peripheries of the grinding wheel surfaces of the grinding wheels, and then through-grinding is performed by feeding the workpiece to allow the surfaces to be ground to pass along the inner and outer peripheries of the grinding wheel surfaces. As an effect, worn wheel edges or the like can be prevented from being formed in the inner and outer peripheral edges, that grinding wheel surfaces can be maintained in proper shape for a prolonged time, that the grinding accuracy is better, and that dress interval can be prolonged, thus improving the life of grinding wheels.