Deburring Machine Brush Wear Compensation via Reference Turntable
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Solution Overview
Problem
Existing deburring machines for sheet metal workpieces face challenges in maintaining consistent contact pressure of abrasive brushes due to wear, leading to reduced effectiveness and frequent replacement needs.
Innovation Solution
A deburring machine with a vertically movable brush unit and a rotatably mounted reference turntable allows for measurement of brush wear by detecting the sliding friction between the brushes and the turntable, enabling adjustment to maintain constant contact pressure and extending brush life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If brushes are used for deburring workpieces, then deburring effectiveness is improved, but brush wear causes contact pressure to decrease over time
Solution Approach 1:
The patent implements a feedback mechanism where a sensor detects the position of the brush unit and feeds this information to a control unit. The control unit adjusts the brush unit's position based on the detected position to maintain constant contact pressure with the workpiece, compensating for brush wear over time.
Solution Approach 2:
The brush unit is designed to be dynamically adjustable in position. The control unit can move the brush unit to different positions along its axis to compensate for wear, transforming a static brush system into a dynamic one that adapts to wear conditions.
2Productivity
If brushes operate with high contact pressure, then deburring effectiveness is improved, but brush wear increases leading to more frequent replacements
Solution Approach 1:
The feedback mechanism continuously monitors brush position and adjusts it to maintain optimal contact pressure. This allows the system to operate at high effectiveness levels without excessive wear by preventing over-compression of worn brushes.
Solution Approach 2:
The system changes the operational parameters by dynamically adjusting the brush position and contact pressure based on wear conditions. This allows optimization of the balance between deburring effectiveness and brush longevity.
3Manufacturing precision
If brush wear is not monitored, then machine complexity is reduced, but contact pressure becomes inconsistent affecting deburring quality
Solution Approach 1:
A sensor detects the position of the brush unit and provides feedback to a control unit, which automatically adjusts the brush position to maintain consistent contact pressure. This feedback loop ensures deburring quality consistency while adding only minimal system complexity.
Solution Approach 2:
The system performs self-adjustment through automatic control. The control unit autonomously adjusts the brush unit position based on sensor feedback without requiring external intervention, making the monitoring and adjustment process self-service.
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 ensures almost constant contact pressure on workpieces, prolongs brush life, and reduces the frequency of replacements by monitoring and adjusting the brush unit's position relative to the reference turntable, thereby improving deburring efficiency and machine uptime.
Implementation Method 1
a frictional force is generated between the reference turntable and brushes and the reference turntable rotates as a result of the frictional force
Data Source
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AI summary
A machine (1) for deburring workpieces made of flat sheet metal by means of brushing or grinding comprises: a machine stand (2) and at least one brush unit (4, 5) which is vertically movable relative to the machine stand (2). The brush unit (4, 5) comprises an endlessly circulating drive belt (8), a plurality of brush holders (9) attached to the drive belt (8), and wear brushes (10). A rotatably mounted reference turntable (13) is retractable into the working area of the brushes (10), with a top (14) and/or bottom (15) of the reference turntable (13) forming a reference plane (16, 17) for the brushes (10).The brush unit (4, 5) is moved vertically into a reference position in which the brushes (10) contact the reference plane (16, 17) and exert a specific pressure on the reference turntable (14), thereby generating a frictional force between the reference turntable (13) and the brushes (10), causing the reference turntable (13) to rotate. A measuring device (11) detects the reference position of the brush unit (4, 5). The detected reference position depends on the wear of the brushes (10) and forms the basis for setting the machine (1) for production operation.