Covering Device for Vertical Panel Saw Tool Edge Safety
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Solution Overview
Problem
The risk of operators accidentally touching the rotating tool in vertical panel saws is not completely eliminated by existing pressure shoe designs, as there is still a chance of unintentional access through the pressure shoe opening during transitions between rest and working positions.
Innovation Solution
A covering device with at least one cover member that can be moved between a covering and release position, partially or completely covering the tool edge facing the workpiece, is integrated into the tool unit, which can pivot about the tool axis of rotation, and can be manually or motor-driven to prevent access to the rotating tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure shoe with a pressure shoe opening is used to enclose the tool, then operator safety is improved by reducing accidental contact, but the risk of unintentional access through the opening during position transitions remains
Solution Approach 1:
A cover member is introduced as an intermediary element between the operator and the rotating tool. This cover member can be moved between a covering position (blocking access) and a release position (allowing access), thereby mediating the interaction and eliminating the direct hazard pathway through the pressure shoe opening.
Solution Approach 2:
The cover member is designed to be movable rather than fixed, transitioning dynamically between covering and release positions. This dynamic characteristic allows the system to adapt between safety mode (covering position during idle/transitions) and operational mode (release position during machining), resolving the contradiction between safety and accessibility.
2Stability of the object's composition
If the pressure shoe is spring-loaded into the rest position to stabilize the workpiece, then workpiece stability is improved, but the automatic exposure of the tool during position transitions creates safety risks
Solution Approach 1:
The cover member is positioned to cover the tool edge before the pressure shoe completes its transition to the working position. This preliminary covering action ensures that the tool is protected during the entire transition phase, and only becomes exposed when the pressure shoe is fully positioned and the machining operation is about to begin.
Solution Approach 2:
The system incorporates interdependence between the pressure shoe position and cover member position. As the pressure shoe moves from rest to working position, this triggers or coordinates the movement of the cover member, creating a feedback mechanism that ensures the tool is only exposed when the pressure shoe is properly positioned for machining.
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 covering device significantly reduces the risk of operators unintentionally touching the rotating tool by ensuring the tool edge is covered during non-operational phases and exposed only when necessary for machining, enhancing safety by preventing access through the pressure shoe opening.
Implementation Method 1
being spring-loaded into the rest position
Data Source
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AI summary
The invention relates to a tool assembly (10; 90) for a vertical panel saw for processing panel-shaped workpieces, comprising a disc-shaped tool (16) that can be driven in rotation about a tool rotation axis (20) and a pressure shoe (24; 102; 110) that can be slidably applied to the workpiece (12) to be processed, which is movable back and forth relative to the tool (16) between a basic position and a working position and is spring-loaded in the rest position and which has a pressure shoe opening (32; 104; 118) which, in the working position of the pressure shoe (24; 102; 110), can be penetrated by a part of the tool (16) facing the workpiece (12).To reduce the risk of an operator accidentally touching the rotating tool (16), the invention proposes that the tool assembly (10; 90) has a covering device (40; 92) with at least one covering element (42, 44; 94, 96) which is movable back and forth between a covering position and a release position, wherein the covering element (42, 44; 94, 96) at least partially covers an edge section of the tool (16) facing the workpiece (16) in the covering position and releases it in the release position.