Miter Jig With Adjustable Hinge For Non-Perpendicular Corners
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Solution Overview
Problem
Traditional miter joints and fabrication devices are inadequate for creating non-perpendicular corners, which are increasingly required in various structures such as buildings and furniture.
Innovation Solution
A miter jig configured with a base plate, top plate connected by a hinge, adjustable brace assemblies, and a cutting implement guide that allows for beveling of workpieces at angles up to 80 degrees, enabling the fabrication of non-perpendicular miter joints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional miter joints are used, then perpendicular corners (90°) can be fabricated, but non-perpendicular corners (acute or obtuse angles) cannot be created
Solution Approach 1:
The miter jig employs a dynamic top plate that can be adjusted to various angles relative to the base plate through movable brace assemblies. This allows the device to adapt from fixed 90-degree miter joints to variable angle configurations (up to 80 degrees), resolving the contradiction between versatility and complexity by introducing controlled mobility rather than requiring multiple separate fixed-angle devices
Solution Approach 2:
The invention changes the angular parameter of the top plate relative to the base plate using adjustable brace assemblies with cam clamps. By modifying this geometric parameter, the jig can create different corner angles (acute or obtuse) while maintaining a single device structure, thus achieving angle versatility without proportionally increasing overall device complexity
2Adaptability or versatility
If the top plate is fixed at 90 degrees to the base plate, then traditional miter joints can be made, but non-perpendicular miter joints cannot be fabricated
Solution Approach 1:
The top plate is designed to be dynamically adjustable rather than fixed, allowing operators to change the bevel angle by repositioning the brace assemblies. This dynamic capability enables fabrication of non-perpendicular miter joints while maintaining ease of operation through mechanical adjustment mechanisms that do not require complex procedures
Solution Approach 2:
The brace assemblies are pre-configured with cam clamps and mounting holes that allow for preliminary positioning and secure locking at desired angles. This preliminary preparation of adjustment mechanisms simplifies the operation of changing angles, as operators can quickly set and lock the top plate at the required bevel angle without complex alignment procedures
3Adaptability or versatility
If a single miter jig is used, then workpieces within its length capacity can be processed, but longer workpieces cannot be accommodated
Solution Approach 1:
The base plate is designed with universal interlocking features that allow multiple miter jigs to be connected end-to-end. This multi-functionality enables a single base plate design to serve both as a standalone unit for shorter workpieces and as part of an extended configuration for longer workpieces, achieving increased length capacity without requiring fundamentally different device designs
4Manufacturing precision
If the cutting implement guide is fixed in position, then cutting accuracy is maintained, but adaptability to different cutting positions is limited
Solution Approach 1:
The cutting implement guide is designed with movable mounting features on the top plate, allowing it to be repositioned along the plate's surface while maintaining its angular relationship to the cutting edge. This dynamic positioning capability provides flexibility for different cutting positions while preserving cutting angle accuracy through the guide's constrained movement path
Solution Approach 2:
The cutting implement guide includes pre-positioned mounting holes and alignment features that allow for accurate repositioning at predetermined locations. This preliminary preparation of guide positions ensures that when the guide is moved to different locations on the top plate, cutting angle accuracy is maintained without requiring complex realignment procedures
Data Source
AI summary
Implementations of a miter jig are provided. The miter jig can be used to fabricate a non-perpendicular miter joint, the miter joint being formed by beveling each of two parts (e.g., wooden panels) to be joined to form a corner. By using a miter jig, each of the parts to be joined can be cut to have a bevel angle of up to 80°. In this way, a corner having an acute angle or an obtuse angle can be formed. The miter jig is configured so that it can be secured to a workpiece and comprises a base plate connected to a top plate by a hinge, at least two adjustable brace assemblies configured to set the angle of the top plate relative to the base plate, and a cutting implement guide configured to guide a cutting implement to cut a workpiece at an angle.