Grinding Wheel Tapered Trailing Edge for Compliant Material Finish
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Solution Overview
Problem
Existing grinding wheels impair the surface finish quality of feed rollers due to the deformation and radial expansion of compliant materials during grinding, resulting in scratches from the trailing edge of the wheel.
Innovation Solution
A grinding wheel design featuring first and second circumferential portions with abrasive coatings, where the second portion tapers radially inwardly to accommodate post-grind expansion, ensuring a controlled engagement and preventing scratches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional grinding wheel with a single uniform abrasive surface is used, then the grinding process can be completed efficiently, but the trailing edge of the wheel produces scratches on the surface finish due to post-grind radial expansion of the compliant material
Solution Approach 1:
The grinding wheel abrasive surface is segmented into two distinct axial portions: a first portion with a first working plane and a second portion with a second working plane that is radially inwardly offset. This segmentation allows each portion to perform a specific function - the first portion for primary grinding and the second portion for preventing scratches during material expansion, thereby resolving the contradiction between grinding efficiency and surface finish quality
Solution Approach 2:
Different regions of the grinding wheel surface are given different geometric properties - the first axial portion has a first working plane while the second axial portion has a second working plane offset radially inwardly. This local differentiation ensures that the trailing edge region specifically accommodates post-grind expansion without compromising the overall grinding efficiency
2Manufacturing precision
If the grinding wheel trailing edge is designed to produce high-quality finish, then surface finish would be improved, but the trailing edge cannot accommodate the radial expansion of compliant material during grinding
Solution Approach 1:
The second axial portion of the grinding wheel is specifically designed with a second working plane offset radially inwardly from the first working plane. This localized geometric adaptation at the trailing edge enables it to accommodate radial expansion of compliant materials while maintaining surface finish quality, resolving the contradiction between finish quality and expansion accommodation
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
The solution provides a high-quality surface finish by preventing scratches and maintaining uniformity during the grinding process, allowing for precise control of the work piece dimensions and surface quality.
Implementation Method 1
a grinding process is typically employed to remove material from the outer cylindrical surface of the roller
Implementation Method 2
the compliant material is deformed out of its unstressed shape. Typically the portions in contact with the grinding wheel experience a reduced radial dimension. This distortion of shape is relieved once the grinding operation is completed. As the complaint material returns to its unstressed shape it expands coming into contact with the trailing edge of the grinding wheel
Data Source
AI summary
An abrasive tool includes a tool base having a supporting surface and a generally cylindrical abrasive surface layer disposed on the supporting surface. The abrasive surface removes material from a work-piece outer surface by contact therewith and by relative movement along a defined working path. The abrasive tool comprises a first axially extending circumferential portion featuring an abrasive coating selected to produce a final finish on the work piece, and a second trailing portion that tapers radially inwardly to accommodate post-grind radial expansion of the work piece.