Material Removal Tool Motion Control Using Contact Feedback
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Solution Overview
Problem
Conventional material removal machines lack precise movement control, leading to imprecise and crude movement, which affects their efficiency and effectiveness in operations such as cutting, grinding, and polishing.
Innovation Solution
The implementation of a material removal system with control circuitry that adjusts the movement of the material removal tool based on power, thermal, and positional parameters, using current drawn by the tool actuator as an indicator to differentiate between contact and non-contact positions, thereby optimizing movement speed and force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional material removal machines are used with stationary or manual movement control, then the device complexity is low, but the manufacturing precision and movement precision are poor
Solution Approach 1:
The system employs feedback control by monitoring power consumption of the actuator and using this information to adjust movement parameters. The controller receives feedback about the material removal tool's contact state with the workpiece and modifies movement speed and force accordingly, resolving the contradiction between precision and complexity through intelligent control rather than mechanical complexity
Solution Approach 2:
The patent replaces manual or simple mechanical movement control with an automated control system that uses electrical signals and power monitoring. The actuator's electrical power consumption serves as a proxy for mechanical contact state, substituting complex mechanical sensors with electrical measurement to achieve precise movement control
2Productivity
If crude movement control is used in material removal machines, then the ease of operation is high, but the productivity and effectiveness are reduced
Solution Approach 1:
The system performs self-adjustment by automatically monitoring its own power consumption and using this information to optimize its movement parameters. The control system serves itself by detecting contact conditions through power measurement and autonomously adjusting speed and force, eliminating the need for complex manual operation while improving productivity
Solution Approach 2:
The system dynamically changes operational parameters (movement speed, force, acceleration) based on real-time power consumption data. By adjusting these parameters according to contact conditions, the system optimizes productivity without requiring complex manual intervention, as the parameters adapt automatically to operational needs
3Manufacturing precision
If automated movement control is implemented in material removal machines, then the manufacturing precision is improved, but the device complexity increases
Solution Approach 1:
The control system serves multiple functions: it monitors power consumption, determines contact state, adjusts movement speed, controls acceleration, and manages force application. By consolidating these functions into a single multi-functional controller that uses power measurement as a universal indicator, the system achieves high precision without proportionally increasing complexity
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
This approach enables more precise and responsive movement control, improving the efficiency and effectiveness of material removal processes by accurately managing speed and force based on real-time operational conditions.
Implementation Method 1
The control circuitry is configured to differentiate between a contact position and a non-contact position of the material removal tool based on the current drawn by the tool actuator
Data Source
AI summary
In some examples, a material removal system may control movement of a material removal machine based on whether a material removal tool is in contact with a sample. A material removal system may include a material removal machine (e.g., saw, grinder, polisher, and/or more general material preparation and/or testing machine) that is configured to move at the urging of one or more actuators. The system may further include control circuitry configured to control movement (and/or speed, acceleration, etc.) of the material removal machine (e.g., via the actuators) based on one or more power, thermal, position, and/or other parameters that indicate whether the material removal tool of the material removal machine is in contact with a sample.