Router Edge Guide Groove Fastening for Precise Woodworking
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Solution Overview
Problem
Existing hand-held power tools, such as routers, require complex guide devices for precise woodworking, which can be cumbersome and difficult to manufacture and handle effectively.
Innovation Solution
A simplified edge guide system with a radially outward rectangular groove and fastening elements, including threaded screws, for secure attachment to the support device, facilitating easy handling and secure fastening without risk of screws falling out, and allowing for precise edge-parallel guidance of the router.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complex guide device is used for precise woodworking, then guidance precision is improved, but device complexity and ease of manufacture deteriorate
Solution Approach 1:
The guide device is segmented into modular components: a support element with carrier element, a separate edge guide with holding arm, and fastening elements. This allows the complex guidance function to be divided into manageable parts that are easier to manufacture and assemble while maintaining precision guidance capability.
Solution Approach 2:
The support element serves multiple functions: it provides structural support for the machine housing, incorporates the groove for edge guide attachment, and includes the base plate for tool passage. This multi-functionality reduces the need for separate components, simplifying the overall device while maintaining guidance precision.
2Reliability
If traditional fastening methods are used, then secure attachment is achieved, but ease of operation deteriorates due to risk of screws falling out
Solution Approach 1:
The fastening elements are designed to be captively arranged within the support element structure, with the groove containing the fastening elements between the base plate and annular end flange. This self-contained design prevents screws from falling out during handling and operation, while still allowing easy attachment and detachment of the edge guide.
3Ease of manufacture
If a simplified groove structure is used, then ease of manufacture is improved, but fastening reliability may deteriorate
Solution Approach 1:
The groove has a simplified rectangular cross-sectional geometry with two parallel groove walls and a flat groove base, making it easy to manufacture. However, the groove depth is specifically designed to be greater than the material thickness of the fastening section, and fastening elements are captively arranged, ensuring reliable fastening despite the simple groove structure.
Data Source
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AI summary
The invention relates to a hand-held power tool (100), in particular a router (102), comprising a machine housing (104) and a support device (120) for guiding the hand-held power tool (100) on a workpiece (118), the support device (120) comprising a carrier element (122), in which the machine housing (104) is at least partially received and fastened. A foot plate (130) which allows an insert tool (114), in particular a milling tool (116) to pass through and which is designed to bear against a workpiece (118) is fastened to an end flange (124) of the carrier element facing away from the machine housing (104), and an edge guide (200) for guiding the hand-held power tool (100) along an edge (160) of the workpiece (118) is fastenable to the end flange (124) of the carrier element (122). A groove is formed in the end flange (124), in which groove a fastening portion (206) of a holding arm (202) of the edge guide (200) can be received interlockingly at least in some regions and can be fastened by means of at least one fastening element.