Edge Dressing Grinder Tool with Guide Plate
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Solution Overview
Problem
Existing hand-held grinders lack the precision and stability to grind vertical edges of concrete or stone slabs consistently in a straight line and perpendicular alignment, leading to potential edge chipping and uneven finishes.
Innovation Solution
A hand-held grinder tool with a handle, rotating grinding disc, and a system comprising a longitudinally aligned bracket, slide rods, a sliding guide plate with low friction, and transversely aligned wheels, along with an elongated flat fence and clamps to ensure the grinder moves smoothly and perpendicularly over the edge, allowing for precise alignment and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a hand-held grinder is used without additional guiding mechanisms, then the device is simple and easy to operate, but the grinding precision and linearity are poor
Solution Approach 1:
A guide plate with wheels is introduced as an intermediary component between the grinder and the workpiece. The guide plate rolls along the top surface of the workpiece, serving as a mediator that guides the grinder's movement and ensures linear grinding while maintaining relative simplicity of the overall system
Solution Approach 2:
The guiding system is segmented into separate functional components: a guide plate for directional guidance, wheels for rolling contact and stability, and an adjustment mechanism for positioning. This segmentation allows each component to perform its specific function efficiently while keeping the overall device manageable in complexity
2Manufacturing precision
If the grinder is held at constant pressure manually, then the operation is simple, but the grinding flatness and edge quality are inconsistent
Solution Approach 1:
The guide plate creates a stable reference plane by rolling on the workpiece surface, establishing an equipotential guiding condition. This ensures that the grinder maintains consistent contact pressure and angle throughout the grinding process, eliminating variations caused by manual handling while keeping the operation straightforward
3Productivity
If the grinder moves quickly over the edge, then productivity is high, but edge chipping increases
Solution Approach 1:
The guide plate is positioned and secured before grinding begins, establishing a predetermined grinding path and contact point. This preliminary setup ensures that the grinder follows a consistent trajectory at optimal speed, preventing edge chipping while maintaining high productivity throughout the grinding process
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 grinder to maintain a flat, straight grinding action along vertical edges, reducing edge chipping and ensuring linearity, while the optional water jet ports aid in cooling and smoothing the grinding process.
Implementation Method 1
Mounted on the two slide rods is a sliding guide plate with a low friction, sliding bottom surface
Implementation Method 2
Mounted along the rear edge of the guide plate are two, transversely aligned wheels... the two wheels continuously roll against the lip
Implementation Method 3
Formed on the bottom surface of the glide plate are optional water jet ports that enable water to be continuously or intermittently sprayed on the surface of the ground edge surface during the grinding process
Data Source
AI summary
An edge dressing grinder tool used for making a continuous straight, vertical edge on a concrete, natural stone or artificial stone slab used for a countertop or table. The tool includes a manually operated hand grinder with a perpendicularly aligned grinding disc or pad mounted on a drive shaft. Attached to the head of the grinder is a forward extending, longitudinally aligned bracket. Extending laterally from the bracket are two slide arms and an adjustment rod. Mounted on the distal ends of the slide arms is a guide plate with a low friction, sliding plate. Mounted along the rear edge of the guide plate are two, transversely aligned wheels that press against a raised edge formed on a rigid fence that is fixed in position on the top surface of the work piece and parallel to the edge. The end of the adjacent rod engages a nut assembly mounted on the slide plate that allows the distance between the grinder's head and the guide plate to be selectively adjusted.