Electromagnetic Sanding Pressure Segments for Workpiece Height Variations
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Sanding machines face challenges in maintaining consistent sanding results due to varying contact pressure forces caused by height differences in workpieces, leading to inconsistent machining outcomes.
Innovation Solution
A device with electromagnetically movable pressure segments and sensors to detect and regulate sanding pressure, ensuring constant sanding results by comparing detected pressure forces to setpoint values and adjusting actuation accordingly, using magnetic actuators and film-type sensors for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If pressure segments are adjusted individually to press sanding belt against workpiece, then sanding contact is improved, but sanding result consistency deteriorates due to varying contact pressure forces from height differences
Solution Approach 1:
The carrier element is divided into multiple individually adjustable pressure segments that can be controlled separately. Each pressure segment can be adjusted to accommodate local height variations in the workpiece, ensuring uniform sanding pressure across the entire surface despite thickness differences.
Solution Approach 2:
Sensors are integrated to detect the actual contact pressure force between the sanding belt and workpiece. This measured force is fed back to the control unit, which automatically adjusts the pressure segment actuation to maintain a predetermined target pressure, ensuring consistent sanding results.
2Adaptability or versatility
If workpiece thickness variations occur, then adaptability is improved, but contact pressure control deteriorates leading to varying sanding forces
Solution Approach 1:
The pressure segments are designed to be dynamically adjustable during the sanding process. The control unit continuously modifies the actuation of each pressure segment based on real-time sensor feedback, allowing the system to adapt to thickness variations while maintaining constant contact pressure.
Solution Approach 2:
The system changes the actuation parameters (force, duration, timing) of each pressure segment dynamically. By adjusting these parameters based on detected workpiece thickness and actual contact pressure, the system maintains optimal sanding conditions despite workpiece variations.
3Speed
If pressure segments are electromagnetically actuated for rapid control, then response speed is improved, but device complexity increases
Solution Approach 1:
Traditional mechanical actuation systems are replaced with electromagnetic actuators. This substitution enables rapid, precise, and programmable control of pressure segments without complex mechanical linkages, achieving fast response while actually simplifying the overall control architecture.
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 maintains consistent sanding results under changing workpiece thickness conditions, allows for data analysis and feedback to operators, and enables improved machine performance through data collection and potential design adjustments.
Implementation Method 1
The device comprises in this case pressure segments which are preferably each movable electromagnetically. This embodiment results in a rapid and accurate control of the corresponding pressure segments.
Data Source
AI summary
The present invention relates to a device for sanding surfaces of a workpiece, preferably at least portions of which are made of wood, a manufactured wood product, plastic or such like. The present invention further relates to a sanding method and to a sanding machine comprising: a carrier element (11), a plurality of pressure segments (12a, 12b, 12c) which can be actuated, in particular electromagnetically actuated, and which are disposed along the carrier element (11) and are each designed to press a sanding element, especially a sanding belt (21), against a workpiece (1), and at least one sensor (13a, 13b, 13c) for sensing a compressive force applied to a workpiece by one of the pressure segments.