Grinding Tool with Adjustable Planing Knives
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Solution Overview
Problem
Existing floor grinding machines struggle to simultaneously plan and grind wooden floors effectively, as they either require separate operations, are limited to specific surface types, or fail to adjust penetration depth, leading to inefficiencies in handling dirty or uneven surfaces.
Innovation Solution
A grinding tool with rotating discs and detachable cutting heads, where the cutting heads are adjustable in depth and can be lifted off the surface using a felt-supported sandpaper system with Velcro fastening, allowing for simultaneous planning and grinding with adjustable penetration depth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single grinding machine is used for both planing and grinding operations, then productivity increases, but the machine design becomes complex and cannot accommodate both operations effectively
Solution Approach 1:
The patent combines planing knives and grinding discs into a single grinding tool assembly mounted on one carrier. Multiple grinding discs with cutting edges are arranged on the same carrier, allowing both planing and grinding operations to be performed simultaneously by the same machine, thereby increasing productivity without requiring separate machines for each operation.
Solution Approach 2:
The grinding tool is divided into separate modular components: the carrier, individual grinding discs with cutting edges, and removable abrasive pads. This segmentation allows each component to be optimized independently and facilitates easy replacement of worn abrasives without affecting the entire tool assembly, simplifying maintenance and operation.
2Device complexity
If fixed-length grinding brushes are used for both planing and grinding, then the machine structure is simplified, but the ability to adjust penetration depth and eliminate either effect is lost
Solution Approach 1:
The grinding discs are designed with adjustable penetration depth, allowing the cutting edges to be positioned at different heights relative to the abrasive pads. This dynamic adjustment capability enables operators to control the planing depth independently and even eliminate the planing effect entirely if only grinding is required, providing versatility while maintaining structural simplicity.
Solution Approach 2:
The cutting edges on the grinding discs are positioned to protrude slightly beyond the abrasive pads by default, preparing the tool for combined planing and grinding operation. This preliminary positioning allows the machine to be ready for simultaneous dual-operation mode, with the option to adjust or eliminate either function as needed.
3Manufacturing precision
If abrasive material is used on wooden floors, then grinding capability is achieved, but dirt, varnish, and oil residues adhere to the wood causing staining
Solution Approach 1:
The patent combines planing knives and grinding discs into a single grinding tool assembly mounted on one carrier. Multiple grinding discs with cutting edges are arranged on the same carrier, allowing both planing and grinding operations to be performed simultaneously by the same machine, thereby increasing productivity without requiring separate machines for each operation.
Solution Approach 2:
The planing knives cut and lift dirt, varnish, and oil residues away from the floor surface before the abrasive pads make contact. This converts the potential harm of residues adhering to the abrasive into a benefit, as the residues are removed by the cutting action, preventing staining and improving the effectiveness of the grinding operation.
4Adaptability or versatility
If cutting heads are mounted on a grinding machine designed for wooden floors, then screed treatment capability is added, but the machine cannot effectively treat both wooden floors and screeds simultaneously
Solution Approach 1:
The grinding tool assembly with multiple discs featuring both cutting edges and abrasive surfaces is designed to be universally applicable to different surface types. The combination of planing and grinding capabilities in a single tool allows effective treatment of both wooden floors and screeds without requiring separate machines or tool changes, enhancing versatility while maintaining productivity.
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 efficient simultaneous planning and grinding of wooden floors, preventing dirt and oil from sticking to the abrasive coating and allowing for precise control over the grinding process, including fine sanding, by ensuring the cutting heads maintain effective contact with the surface while allowing for easy adjustment of penetration depth.
Implementation Method 1
knives (4) for chip removal are arranged on the grinding tool carrier (1) and between the grinding discs (2)... the blades (4) lift the substances and prevent them from adhering to the grinding pad (5)
Implementation Method 2
grinding discs (2) with grinding surfaces... The sanding pad (5) and the sanding disc (2) can be detachably connected to each other using hook and loop fasteners
Implementation Method 3
The sanding pad (5) and the sanding disc (2) can be detachably connected to each other using hook and loop fasteners
Data Source
Figure 1~3
AI summary
A grinding tool carrier (1) with substantially circular grinding discs (2) arranged thereupon, an abrasive covering detachably secured on said discs and chip-removing cutters (4) arranged on the grinding tool carrier and between the grinding discs.