Elastic Lapping Tool for Complex Curved Surfaces
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Solution Overview
Problem
Conventional lapping devices fail to precisely lap surfaces with complicated shapes, such as curved surfaces, due to their inability to effectively contact and smooth such geometries.
Innovation Solution
A lapping device featuring a lapping portion with an abrasive layer and an elastic member, which can be elastically deformed to fit complex shapes, coupled to a shank with a groove system that allows for secure attachment and rotation, ensuring precise contact and smoothing of surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional rigid lapping device is used, then the structure is simple and easy to manufacture, but the device cannot precisely lap surfaces with complicated shapes such as curved surfaces
Solution Approach 1:
The lapping portion uses an elastic member (such as a sponge) instead of a rigid structure, allowing it to deform and conform to complicated surface geometries including curved surfaces, thereby achieving precise lapping of complex shapes that rigid devices cannot handle
Solution Approach 2:
The lapping portion is constructed as a composite structure with an elastic member and an abrasive layer, combining the flexibility of the elastic material with the cutting capability of the abrasive particles to enable both adaptation to complex surfaces and effective material removal
2Manufacturing precision
If an elastic member is introduced to fit complex shapes, then lapping precision on complicated surfaces is improved, but the device structure becomes more complex
Solution Approach 1:
The elastic member serves as a flexible substrate that can be molded into various shapes and will elastically deform to conform to the workpiece surface, providing precision lapping capability for complex geometries without requiring complex mechanical adjustment mechanisms
Solution Approach 2:
The elastic member's material properties (elasticity, hardness) and geometric parameters (thickness, shape) can be adjusted to optimize performance for different workpiece geometries, allowing a single basic structure to handle various complex surfaces by changing material or dimensional parameters rather than redesigning the entire device
3Manufacturing precision
If the lapping portion is made elastic to contact curved surfaces, then contact precision is improved, but the attachment and securing mechanism becomes more complex
Solution Approach 1:
The elastic member's inherent flexibility allows it to be securely attached to the shank while maintaining the ability to deform and conform to workpiece surfaces, achieving precise contact without requiring complex attachment mechanisms - the elasticity itself provides both attachment capability and adaptive contact
4Productivity
If a rigid lapping device is used, then the device structure is simple, but the lapping time for complicated shapes is excessive
Solution Approach 1:
The elastic lapping portion can immediately conform to the workpiece surface geometry, eliminating the need for time-consuming adjustments and positioning required by rigid devices, thereby significantly reducing lapping time for complicated shapes while maintaining a relatively simple overall device structure
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 device achieves improved surface roughness, reduced dimension changes, and faster lapping times compared to conventional devices, enabling precise lapping of complex shapes with enhanced precision and efficiency.
Implementation Method 1
an elastic member between the abrasive layer and the shank... which can be elastically deformed to fit complex shapes
Implementation Method 2
The lapping portion includes an abrasive layer... enabling precise lapping of complex shapes
Data Source
AI summary
A lapping device is provided that is capable of precisely lapping a surface of an object having a complicated shape, the lapping device including a driving unit, a shank connected to the driving unit through a driving shaft, and a lapping portion coupled to the shank. The lapping portion includes an abrasive layer and an elastic member between the abrasive layer and the shank.