Pivoting Machining Jig for Accurate Compound-Angle Drilling
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Solution Overview
Problem
Drill presses require frequent adjustments to drill holes at compound angles, leading to inefficiency and inaccuracy due to the need for continuous table reorientation, and the use of multiple devices complicates the process.
Innovation Solution
A machining jig with a pivotable work table and adjustment assembly that allows precise alignment and securement at desired compound angles, eliminating the need for repeated drill press table adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the drill press table is continuously adjusted to drill holes at different compound angles, then the ability to drill various angles is achieved, but the time and effort required increases significantly
Solution Approach 1:
The system segments the angle adjustment function from the drill press table itself, creating a separate angle adjustment mechanism with modular components including an angle adjustment assembly, positioning members, and locking mechanisms that can be independently configured for different angles without affecting the main drill press operation
Solution Approach 2:
The system performs preliminary angle configuration through pre-set positioning members and indexing mechanisms that allow the workpiece or drill bit to be pre-positioned at desired compound angles before drilling begins, eliminating the need for continuous adjustment during the drilling process
2Adaptability or versatility
If the drill press table is frequently reoriented for different angles, then multiple drilling angles are achieved, but drilling accuracy decreases due to constant manipulation
Solution Approach 1:
The system incorporates feedback mechanisms through indexing teeth, positioning sensors, or mechanical stops that provide precise reference points for angle setting, allowing the operator to verify and maintain accurate compound angles without repeated manual adjustment and leveling
Solution Approach 2:
The system uses dynamic locking mechanisms that can quickly transition between fixed angular positions, maintaining precise alignment once set, while allowing easy reconfiguration when angle changes are required, thus preserving accuracy throughout the drilling process
3Manufacturing precision
If multiple assisting devices are used to drill holes at different compound angles, then various precise angles are achieved, but the complexity of the system increases
Solution Approach 1:
The system merges multiple angle adjustment functions into a single integrated angle adjustment assembly that combines workpiece positioning, drill bit orientation, and angle locking mechanisms, replacing the need for multiple separate assisting devices while maintaining the ability to achieve various compound angles
Solution Approach 2:
The angle adjustment assembly is designed as a universal mechanism that can accommodate different workpiece sizes, shapes, and drilling requirements through adjustable positioning members and interchangeable fixtures, eliminating the need for specialized devices for each specific drilling task
Data Source
AI summary
A machining jig used for adjusting and aligning a workpiece with a drill bit of a drill press in order to make at least one hole at at least one desired compound angle in a workpiece. The machining jig includes a base table adapted to be operably engaged with a drill press table. The machining jig also includes a work table operably engaged with the base table, wherein the work table is pivotably moveable relative to the base table. The machining jig also includes an adjustment assembly operably engaged with the work table and the base table. The adjustment assembly is configured to pivotably adjust the work table to an angle relative to the base table, wherein the angle is selected from a range of predetermined angles. The adjustment assembly also secures the work table to the base table at the selected angle.