Fixed-Angle Guide Rail Mount for Circular Saw Miter Cuts Over 45°
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Solution Overview
Problem
Handheld circular saws are limited to making miter cuts at angles up to 45° due to the adjustment range of their adjustable base plates, and creating larger angles requires the use of complex table saws or miter saws with adjustable mechanisms.
Innovation Solution
A wedge-shaped mounting element with a fixed angle between 10° and 40°, preferably 25°, is used to attach a guide rail to a workpiece, allowing handheld circular saws to make miter cuts at angles exceeding 45° by attaching the saw at an acute angle to the workpiece surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If table saws or miter saws with adjustable mechanisms are used to create miter cuts at angles greater than 45°, then the cutting angle capability is improved, but the device complexity increases
Solution Approach 1:
The system is divided into separate components: a standard handheld circular saw and a separate mounting element with guide rail. The mounting element provides the angle adjustment capability while the saw remains simple and unchanged. This segmentation allows angle versatility without complicating the saw itself.
Solution Approach 2:
The mounting element with fixed angle (e.g., 25°) acts as an intermediary between the workpiece surface and the guide rail. This intermediary provides the angle transformation, allowing the saw to cut at angles greater than 45° relative to the workpiece while maintaining a simple 45° base plate adjustment.
2Adaptability or versatility
If a guide rail is attached at an angle to the workpiece surface to enable miter cuts greater than 45°, then the cutting angle capability is improved, but the mounting complexity increases
Solution Approach 1:
The mounting element is designed with a specific fixed angle parameter (e.g., 25°) that transforms the relationship between the guide rail and workpiece surface. This parameter change enables the system to achieve cutting angles greater than 45° while keeping the mounting element itself simple to manufacture as a monolithic component.
Solution Approach 2:
The mounting element is designed as a simple, inexpensive component that can be easily manufactured and replaced if needed. By using a simple wedge-shaped element with a fixed angle rather than a complex adjustable mechanism, the system achieves versatility at low cost and manufacturing complexity.
3Ease of manufacture
If the mounting element has a fixed non-adjustable angle, then the manufacturing simplicity is improved, but the adaptability to different cutting angles decreases
Solution Approach 1:
The mounting element with a fixed angle (e.g., 25°) serves multiple functions: it provides angle transformation, supports the guide rail, and enables cutting angles greater than 45°. This universal design achieves versatility through the combination of the fixed-angle mounting element with the adjustable base plate of the circular saw, rather than requiring the mounting element itself to be adjustable.
Data Source
Figure 1
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AI summary
The invention relates to a mounting element (2) for a guide rail (4) for guiding a hand-held circular saw, comprising a body (3) which forms a workpiece support section (6) forming a workpiece support plane for the support of the mounting element (2) against a workpiece and a guide rail support section (8) forming a guide rail support plane to which a guide rail (4) for a hand-held circular saw can be secured, as well as comprising a securing means (10) for securing the guide rail (4) to the guide rail support section (8), wherein the workpiece support plane and the guide rail support plane enclose a fixed angle between them, wherein the fixed angle has an angular dimension of between 10° and 40°, preferably between 20° and 30°, more preferably of 25°.