Sanding Tool Support Device with Vibration Dissipation
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Solution Overview
Problem
Sanding and polishing tools are heavy and generate vibrations, leading to significant operator fatigue and musculoskeletal disorders due to the physical effort required to support the tool and manage its frictional vibrations, especially in intensive and repetitive tasks.
Innovation Solution
A device that supports the weight of the sanding or polishing tool and dissipates vibrations, allowing the operator to control the tool's movement without exerting physical effort, featuring a sub-assembly mounted on a frame with drive means and pressure control mechanisms, enabling the tool to maintain constant pressure on surfaces regardless of shape, and optionally using a programmable automaton for movement control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operator manually supports and controls the sanding or polishing tool, then the tool can be guided on the surface, but the operator experiences significant fatigue and musculoskeletal disorders due to the heavy weight and vibrations
Solution Approach 1:
The device is divided into distinct functional modules: a support structure that carries the tool, a drive system that provides motion, and a control system that manages operation. This segmentation allows the heavy tool weight to be borne by the support structure rather than the operator, while the operator only needs to provide guidance inputs.
Solution Approach 2:
The device acts as an intermediary between the operator and the tool. The support structure and drive system serve as mediators that transfer and amplify the operator's minimal guidance inputs into controlled tool movement, eliminating the need for the operator to directly support the tool weight or manage vibrations.
2Productivity
If the operator manually controls the tool movements, then the tool can be guided on the surface, but intensive and repeated use generates significant operator fatigue requiring long recovery periods
Solution Approach 1:
The device performs self-service by automatically managing tool support, positioning, and motion control. The support structure continuously bears the tool weight, the drive system automatically provides movement, and the control system maintains constant pressure - all without requiring continuous physical effort from the operator, enabling indefinite operation without fatigue.
Solution Approach 2:
The patent replaces the operator's manual mechanical control system with an automated control system that uses sensors and actuators. This substitution eliminates the physical effort previously required from the operator's muscles, allowing intensive and repeated use without fatigue while maintaining precise tool guidance.
3Adaptability or versatility
If the tool is applied to surfaces of varying shapes, then the sanding or polishing can be performed, but maintaining constant pressure requires significant physical effort from the operator
Solution Approach 1:
The device incorporates feedback mechanisms that continuously monitor the tool's contact with the surface and automatically adjust the drive system to maintain constant pressure. This closed-loop control allows the tool to adapt to surfaces of varying shapes without requiring the operator to manually modulate pressure, as the system self-regulates based on real-time feedback.
Solution Approach 2:
The device employs dynamic adjustment capabilities where the drive system continuously adapts its output force based on the surface geometry. This dynamic behavior allows constant pressure maintenance across varying surface shapes, replacing the operator's physical effort with an automated system that responds in real-time to surface contours.
4Extent of automation
If a programmable automaton is used to control the drive means, then movement control can be automated, but the device complexity increases
Solution Approach 1:
The control system is designed with multi-functionality, serving both as a programmable automaton for automated movement control and as an adaptive system that can respond to real-time feedback. This universal design allows the same control unit to handle both automated programming execution and dynamic surface adaptation, reducing overall system complexity compared to having separate systems for each function.
Data Source
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AI summary
The device has a driving unit for driving displacement of arms (301) of a support sub-assembly (3) on a base frame (1) in three directions, and a control unit for controlling pressure applied by a sanding tool on a sanding surface. A controlling unit controls the driving unit, where the controlling unit comprises a manually actionable handle. The support sub-assembly is mounted on the frame around a horizontal axis. The arm is mounted for pivoting around the horizontal axis.