Integrated Diamond Grinding and Polishing Device
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Solution Overview
Problem
Current methods for machining diamond surfaces are inefficient, generating high heat and leading to graphitization, producing poor surface quality, and requiring frequent replacement of polishing disks, while also being costly and prone to positioning errors due to separate grinding and polishing processes.
Innovation Solution
An integrated machining device with a frame, base, and grinding/polishing device featuring a shaft with an inner grinding wheel and outer polishing wheel, where the wheels are adjustable and driven by motors for synchronized rotation and feeding, using hard abrasives and a vacuum pad for precise clamping, allowing for simultaneous grinding and polishing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hard-contact mechanical polishing is used to machine diamond surfaces, then polishing efficiency is improved, but surface roughness deteriorates (can only reach about 100 nm) and heat generation increases causing graphitization
Solution Approach 1:
The patent combines mechanical polishing and chemical etching into a single integrated process. The chemical etching solution is applied during mechanical polishing to simultaneously remove material and chemically smooth the surface, achieving both high efficiency and superior surface quality (roughness below 100 nm) while reducing heat-induced graphitization
Solution Approach 2:
The invention uses a composite approach by combining mechanical action with chemical action. The polishing disk applies mechanical force while the chemical etching solution concurrently acts on the diamond surface, creating a synergistic effect that overcomes the limitations of pure mechanical polishing
2Ease of manufacture
If separate grinding and polishing systems are used, then each process can be optimized independently, but the overall process becomes complex and time-consuming requiring multiple clamping operations
Solution Approach 1:
The patent integrates grinding and polishing functions into a single device with one clamping operation. The workpiece is clamped once and sequentially processed through grinding and polishing stages without repositioning, simplifying the overall system while maintaining process optimization through parameter control
Solution Approach 2:
The integrated device performs multiple functions (grinding, polishing, and chemical etching) in a single system. The chemical etching solution serves dual purposes of material removal and surface smoothing, while the single clamping mechanism handles both grinding and polishing operations
3Ease of operation
If the diamond is clamped twice for separate grinding and polishing, then each process can be independently controlled, but positioning errors occur reducing machining accuracy
Solution Approach 1:
The patent combines multiple processing steps into a single clamping operation. The workpiece is secured once and remains in the same position throughout grinding, polishing, and chemical etching, eliminating positioning errors while maintaining independent control through sequential process activation
Solution Approach 2:
The workpiece is clamped and positioned in advance before the entire machining sequence begins. This preliminary positioning action ensures that all subsequent operations (grinding, polishing, etching) occur at the correct location without requiring repositioning
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 integrated device achieves high surface quality with reduced scratch damage, improved efficiency, and lower costs by integrating grinding and polishing into a single process, reducing clamping errors and increasing yield, with surface roughness improved from 300 nm to 0.2-0.4 nm.
Implementation Method 1
a vacuum pad disposed on an upper end surface of the base... the vacuum pad clamps a workpiece on the fixture
Implementation Method 2
the inner grinding wheel comprises an inner wheel body and hard abrasives... the outer polishing wheel comprises hard abrasives... diamond is ground and polished by rotations of the inner grinding wheel and the outer polishing wheel
Data Source
AI summary
An integrated device for grinding and polishing a diamond and a method thereof are provided. The integrated device for grinding and polishing the diamond comprises a base device and a grinding and polishing device, the base device comprises a base configured rotate around a Z-axis, the base comprises a fixture configured to clamp the diamond, the grinding and polishing device comprises a shaft disposed along the Z-axis, the outer polishing wheel surrounds the inner grinding wheel, the shaft drives the inner grinding wheel and the outer polishing wheel to rotate together, an upper and lower position relationship between the inner grinding wheel and the outer polishing wheel along the Z-axis is configured to be adjusted, and the diamond on the fixture is ground and polished by rotations of the inner grinding wheel and the outer polishing wheel, feeding, and a rotation of the base.