Triangular Grinding Blades for Fan-Type Wheels
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Solution Overview
Problem
Fan-type grinding wheels with rectangular grinding blades suffer from reduced tool life and increased waste during cutting, as they are not optimized for efficient material usage and grinding aggressiveness.
Innovation Solution
The fan-type grinding wheel is designed with triangularly configured grinding blades arranged at equal angular intervals on the rim, featuring a convex outer edge, a concave inner edge, and an exposed rear edge, which concentrates grinding material in the outer region, allowing for high-intensity grinding with minimal waste by optimizing the shape and arrangement of the blades.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If rectangular grinding blades are used, then the grinding wheel can be manufactured without waste from the grinding belt, but the tool life is reduced and grinding aggressiveness is lowered
Solution Approach 1:
The grinding wheel is segmented into multiple triangular grinding blades arranged in an annular package. Each blade is a separate functional unit that can be individually optimized for material concentration and grinding aggressiveness while maintaining overall wheel functionality.
Solution Approach 2:
The triangular blade configuration concentrates grinding material specifically in the radially outer region where it is most needed for effective grinding. This local concentration of grinding substance enhances both tool life and grinding aggressiveness at the critical working area.
2Ease of manufacture
If rectangular grinding blades are used, then the manufacturing process is simple, but the grinding aggressiveness and intensity are reduced
Solution Approach 1:
The outer edge of the triangular grinding blades is configured with a convex curvature that matches the outer radius of the grinding blade package. This curvature optimization enhances grinding aggressiveness by ensuring optimal contact between the grinding material and the workpiece surface throughout the rotation.
Solution Approach 2:
The grinding blades are formed from grinding belt material that is optimized for high aggressiveness. The triangular configuration with convex outer edge creates a composite structure that combines the flexibility of belt material with the geometric efficiency of triangular shapes for enhanced grinding performance.
3Duration of action of moving object
If triangular grinding blades with convex outer edge are used, then tool life and grinding aggressiveness are enhanced, but the cutting process becomes more complex
Solution Approach 1:
The triangular blade configuration with convex outer edge is pre-configured during manufacturing to achieve optimal grinding performance from the start. The blades are arranged at equal angular intervals with precise geometric relationships established beforehand, eliminating the need for complex adjustments during operation.
Solution Approach 2:
The geometric parameters of the grinding blades (triangular shape, convex outer edge radius, angular spacing) are optimized to specific values that maximize tool life and grinding aggressiveness. The convex outer edge has a radius of curvature that matches the package outer radius, creating optimal grinding conditions without requiring complex control systems.
4Productivity
If triangular grinding blades are arranged at equal angular intervals, then grinding material is concentrated in the outer region for high intensity grinding, but the number of blades and arrangement precision requirements increase
Solution Approach 1:
The annular grinding blade package is segmented into multiple triangular blades distributed at equal angular intervals. This segmentation allows the grinding material to be concentrated in the outer region while maintaining balanced rotation and consistent grinding intensity throughout the wheel's operation.
Solution Approach 2:
Multiple triangular grinding blades are merged into a unified annular package that functions as a single grinding wheel. The combination of blades at equal angular intervals creates a balanced structure that concentrates grinding material in the outer region while maintaining manufacturing feasibility through standardized blade placement.
Data Source
AI summary
A fan-type grinding wheel which can be driven in rotation in a direction of rotation comprises, on an annular rim region of a support plate, grinding blades which are configured in the form of a triangle. The outer edge of each grinding blade defines a portion of an outer rim of a grinding blade package. The inner edge extends from an inner rim of the grinding blade package to the outer rim. The rear edge is exposed and extends in a leading manner from the inner rim to the outer rim of the grinding blade package—with respect to a direction of rotation.