Rail Saw Angular Stroke Adjustment for Safe Cutting Range
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Solution Overview
Problem
Existing support and guidance devices for rail saws do not provide sufficient angular range of motion and require manual adjustment near the cutting disc, posing safety risks to operators.
Innovation Solution
An angular stroke adjustment device with a locking member, actuating member, and transfer member that automates the adjustment of the main arm's angular position, allowing for safe and efficient cutting by supporting the weight of the rail saw during different phases of the cutting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the main arm is fixed relative to the fixing vise to support the weight of the chainsaw, then the operator is relieved of supporting the chainsaw weight, but the angular range of motion is insufficient to complete the cut along the rail
Solution Approach 1:
The main arm is designed to be dynamically adjustable between fixed angular positions rather than permanently fixed. The locking member can engage different angular stop elements to provide multiple predetermined angular positions, allowing the system to adapt between stability (when locked) and mobility (when unlocked) based on operational needs.
Solution Approach 2:
The system changes the angular position parameter of the main arm by engaging different angular stop elements. Each angular stop element corresponds to a specific angular position suitable for different cutting phases, allowing the operator to select the appropriate parameter setting for the current operational requirement.
2Adaptability or versatility
If manual adjustment of the main arm angular position is implemented, then the required angular range of motion is achieved, but the operator must touch elements near the cutting disc which is dangerous
Solution Approach 1:
The adjustment mechanism is extracted from the dangerous zone near the cutting disc. The angular stop elements are positioned on the support arm away from the cutting area, allowing the operator to adjust the angular position from a safe distance without exposing hands to the cutting disc.
Solution Approach 2:
The angular stop elements serve as intermediaries between the operator's control input and the main arm positioning. The operator interacts with these remotely located elements rather than directly adjusting components near the cutting disc, reducing the harmful exposure to the cutting zone.
3Adaptability or versatility
If multiple angular sectors are provided to allow pivoting during different cutting phases, then the cutting amplitude is sufficient, but the selection of angular sector requires manual adjustment near the cutting disc
Solution Approach 1:
The angular stop elements are pre-positioned at specific angular locations corresponding to different cutting phases. The operator simply needs to engage the appropriate pre-positioned stop element rather than making continuous adjustments near the cutting disc, combining sufficient cutting amplitude with improved safety.
Data Source
Figure 1~2(cl)
Figure 3(cl)
Figure 4(cs1)~4(cs3)
AI summary
Angular stroke adjustment device (10) for a support and guidance system (1) comprising a main arm (3) and a support arm (5), the angular stroke adjustment device (10) comprising a locking member (20) having a first stopping surface (21) and a second stopping surface (23) defining between them an angular support sector (s22), an actuating member (30) pivotally fixed with the support arm (5) and configured to occupy a support configuration (cs1, cs2, cs3), and a transfer member (40) fixed with the main arm (3) and configured to pivotally limit the main arm (3) in the angular support sector (s22), when the transfer member (40) cooperates with the actuating member (30) in the support configuration (cs1, cs2, cs3); and also a support and guidance system (1) comprising such an angular stroke adjustment device (10).