Grindstone Dressing Load Feedback for Wear and Uniformity Control
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Solution Overview
Problem
Existing grinding technologies face challenges in effectively controlling the load and relative movement between dresser boards and grindstones during the dressing process, leading to inefficient grinding and premature wear of the grindstones.
Innovation Solution
A dressing apparatus and method that includes a board holder, moving mechanism, and measuring instrument to control the load applied between the dresser board and grindstones, ensuring appropriate relative movement and dressing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dresser board and grindstones are pressed against each other with high force to improve dressing effectiveness, then the grinding capability is recovered faster, but the wear of the dresser board and grindstones increases prematurely
Solution Approach 1:
The pressing force between the dresser board and grindstones is made dynamically adjustable during the dressing process. The control unit modifies the pressing force based on real-time feedback from the load sensor, increasing force when grinding capability needs recovery and reducing force when adequate sharpness is achieved, thereby optimizing both effectiveness and service life.
Solution Approach 2:
A load sensor continuously measures the actual pressing force between the dresser board and grindstones, and this feedback is sent to the control unit. The control unit compares the measured force with the target force and automatically adjusts the pressing mechanism to maintain optimal force levels, preventing both insufficient dressing and excessive wear.
2Productivity
If the relative movement speed between the dresser board and grindstones is increased to improve productivity, then more material is removed faster, but the loading of grindstones increases and dressing quality deteriorates
Solution Approach 1:
The relative movement speed between the dresser board and grindstones is dynamically adjusted during the dressing process. The control unit increases speed when uniform dressing is achieved and reduces speed when loading occurs or uniformity deteriorates, optimizing both productivity and dressing quality in real-time.
Solution Approach 2:
The load sensor provides continuous feedback on the contact conditions between the dresser board and grindstones. The control unit uses this feedback to automatically adjust the relative movement speed, reducing speed when increased loading is detected and maintaining optimal speeds for high-quality dressing, thereby preventing both excessive loading and maintaining productivity.
3Device complexity
If the pressing force between dresser board and grindstones is not controlled precisely, then the dressing process is simpler, but the grindstones become loaded and dulling occurs prematurely
Solution Approach 1:
A load sensor continuously measures the actual pressing force between the dresser board and grindstones, providing real-time feedback to the control unit. This feedback mechanism enables precise control of the dressing process, ensuring optimal force is applied to prevent loading and premature dulling while maintaining grindstone performance throughout their service life.
4Ease of operation
If the relative movement between dresser board and grindstones is not precisely controlled, then the operation is easier, but the dressing efficiency decreases and productivity drops
Solution Approach 1:
The dressing system automatically controls the relative movement between the dresser board and grindstones based on feedback from the load sensor. The control unit adjusts movement parameters without requiring manual intervention, enabling the system to self-optimize dressing efficiency and maintain high productivity while simplifying operator tasks.
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 allows for precise control of loads and movements, enhancing the dressing process, improving grindstone performance and productivity in manufacturing device chips.
Implementation Method 1
a load sensor that measures a load applied to the dresser board
Implementation Method 2
the actuator is operated to press the dresser board and the grindstones against each other based on the measured load
Implementation Method 3
a dressing apparatus for dressing grindstones that grinds a workpiece by causing the grindstones and a dresser board to slide abrasively against each other
Data Source
AI summary
A dressing apparatus dresses grindstones for grinding a workpiece by causing the grindstones and a dresser board to slide abrasively against each other. The dressing apparatus includes a board holder for holding the dresser board, a moving mechanism for moving the board holder and the grindstones relatively to each other in a direction transverse to a plane along which the grindstones abrasively slide against the dresser board, and a measuring instrument for detecting a load applied to the dresser board.