Rotatable Contact Roller Belt Grinder for Curved Workpieces
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Solution Overview
Problem
Conventional belt grinders lack the flexibility to effectively grind various shapes and curvatures of workpieces, such as faucets, due to fixed contact roller configurations, limiting their applicability and precision.
Innovation Solution
A belt grinder design featuring a rotatable component with multiple contact rollers of different shapes and sizes, which can be alternately positioned to contact the grinding belt, allowing for adjustable contact surfaces to accommodate diverse workpiece geometries, and a fluid driving device to control contact roller engagement and tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed contact roller configuration is used in the belt grinder, then the device structure is simple, but the ability to grind various shapes and curvatures of workpieces is limited
Solution Approach 1:
The contact roller is made rotatable about an axis perpendicular to the grinding belt motion, allowing it to dynamically adjust its orientation and contact different portions of the grinding belt. This dynamic adjustment enables the belt grinder to accommodate various workpiece shapes and curvatures by changing the contact roller's angular position, thereby resolving the contradiction between versatility and structural simplicity.
Solution Approach 2:
The rotatable contact roller is designed to perform multiple functions by assuming different angular positions. It can grind flat surfaces, curved surfaces, and various intermediate geometries by rotating to appropriate angles, making a single device capable of handling diverse grinding tasks that would otherwise require multiple specialized tools.
2Adaptability or versatility
If multiple contact rollers of different shapes are added to handle various workpiece geometries, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The contact roller is segmented into different functional zones along its circumference, with each zone having a different shape or curvature. By rotating the contact roller to different angular positions, different segments contact the grinding belt to match various workpiece geometries. This segmentation allows one roller to replace multiple rollers, reducing overall device complexity while maintaining versatility.
Solution Approach 2:
The contact roller's effective contact parameters (shape, curvature, contact point) are changed by rotating it to different angular positions. This parameter change through rotation allows the same physical roller to present different geometric characteristics to the grinding belt, accommodating diverse workpiece shapes without adding multiple rollers.
3Manufacturing precision
If the contact roller is made rotatable to adjust contact surfaces, then the precision for different geometries improves, but the mechanism complexity increases
Solution Approach 1:
The contact roller is made rotatable about an axis perpendicular to the grinding belt motion, allowing it to dynamically adjust its orientation and contact different portions of the grinding belt. This dynamic adjustment enables the belt grinder to accommodate various workpiece shapes and curvatures by changing the contact roller's angular position, thereby resolving the contradiction between versatility and structural simplicity.
Solution Approach 2:
The rotatable contact roller is designed to perform multiple functions by assuming different angular positions. It can grind flat surfaces, curved surfaces, and various intermediate geometries by rotating to appropriate angles, making a single device capable of handling diverse grinding tasks that would otherwise require multiple specialized tools.
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
Enables the belt grinder to efficiently grind a wide range of surface shapes and curvatures, maintaining consistent belt tension and improving the grinder's versatility and precision in finishing tasks.
Implementation Method 1
The plurality of contact rollers is rotatably disposed on the rotatable component. At least two of the plurality of contact rollers are different in shape. The rotatable component is rotatable with respect to the frame so as to force at least one of the plurality of contact rollers to contact or to be separated from the grinding belt.
Data Source
AI summary
This disclosure relates to a belt grinder includes frame and first grinding assembly. The first grinding assembly includes transmission roller set, grinding belt and adjusting assembly. The transmission roller set includes driving roller and driven roller. Both the driving roller and the driven roller are rotatably disposed on the frame. The grinding belt is installed over the driving roller and the driven roller. The adjusting assembly includes rotatable component and contact rollers. The rotatable component is rotatably disposed on the frame. Rotation axis of the rotatable component is parallel to rotation axis of the driving roller. The contact rollers are rotatably disposed on the rotatable component. Contact rollers are different in shape. The rotatable component is rotatable with respect to the frame so as to force one of the contact rollers to contact or to be separated from the grinding belt.