Radial Brush Protrusions Prevent Slippage in Polishing Rollers
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Solution Overview
Problem
Existing disk-shaped radial brushes for grinding or polishing face challenges in maintaining uniform rotational speed and preventing slipping when assembled into a cylindrical brush roller, leading to either deceleration or barrel-shaped deformation, making it difficult to achieve optimal polishing results.
Innovation Solution
The radial brush features protrusions on one side face and corresponding receiving members on the other, creating a form-fit connection between adjacent brushes, allowing for improved rotational transfer and preventing deceleration, while also enabling easier use of lubricants and cooling agents, and being made from integrally formed thermoplastic polyurethane with grinding particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If axial clamping forces between individual radial brushes are increased to prevent deceleration and slipping, then rotational speed uniformity is improved, but the brush roller deforms into a barrel shape causing concave machining surfaces
Solution Approach 1:
The brush roller is divided into multiple individual radial brush segments that can be assembled separately onto the spindle. Each segment has its own central body with bristles, allowing independent positioning and clamping. This segmentation enables the use of moderate clamping forces that prevent barrel-shaped deformation while still maintaining rotational speed uniformity through proper segment arrangement and connection.
2Area of stationary object
If multiple disk-shaped radial brushes are assembled and axially clamped to form a cylindrical brush roller, then polishing width is increased, but individual radial brushes in the center are decelerated by polishing forces
Solution Approach 1:
The radial brush segments are pre-assembled onto the spindle with proper positioning before final clamping. The connection structures (such as keys, splines, or friction surfaces) are pre-configured to ensure efficient torque transmission. This preliminary arrangement allows the brush roller to maintain uniform rotational speed across all segments even when polishing wide surfaces, preventing center segment deceleration.
3Productivity
If axial clamping forces are increased to prevent slipping of radial brushes, then polishing performance is improved, but the bristles bend outwards causing barrel-shaped deformation
Solution Approach 1:
The invention changes the clamping parameter from high axial clamping force to moderate clamping force combined with improved segment connection design. By using keys, splines, or optimized friction surfaces between segments and the spindle, the system achieves sufficient torque transmission and slipping prevention without requiring excessive axial clamping forces that would cause bristle bending and barrel-shaped deformation, thereby maintaining both polishing performance and cylindrical shape.
Data Source
AI summary
Disclosed is a disk-shaped radial brush for grinding or polishing, including a plate-shaped central body having two side faces and a substantially central opening, and having a plurality of bristles radially extending away from the central body. In order to achieve an assembly of these radial brushes into brush rollers, it is proposed to provide the central body with protrusions on at least one of the side faces and with corresponding receiving members on the other side face. This allows utilizing corresponding radial brushes in brush rollers without slippage of individual radial brushes or without compressing them too much in order to avoid said slippage and thereby deforming them.