Adjustable Jig Apparatus for Precise Workpiece Hole Positioning
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Solution Overview
Problem
Existing jig apparatus for drilling often fails to accurately locate the position of the hole on the workpiece, leading to incorrect placement and rendering the workpiece unusable.
Innovation Solution
A jig apparatus with elongate members that can be selectively positioned and extended from the base, featuring a locator system with measurement scales and locking mechanisms to ensure precise placement of the workpiece and drill bit, allowing for accurate selection and maintenance of the hole location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional jig apparatus with fixed guide channel is used, then drilling accuracy is improved, but hole positioning accuracy on workpiece deteriorates
Solution Approach 1:
The positioning system is segmented into multiple independent components: elongate members that can be selectively attached to the base, locators that can be positioned along these members, and measurement scales that enable precise location selection. This segmentation allows the positioning function to be independently optimized without affecting the guide channel's drilling accuracy.
Solution Approach 2:
The positioning system transitions from a fixed configuration to a dynamic, adjustable system. The elongate members can be selectively positioned and locked at different locations on the base, and the locators can be moved along these members to different positions, enabling flexible adaptation to various workpiece sizes and hole positioning requirements while maintaining drilling accuracy.
2Manufacturing precision
If fixed-length guide channel is used, then drilling accuracy is maintained, but adaptability to different workpiece sizes deteriorates
Solution Approach 1:
The positioning system is divided into modular components including the base, selectively attachable elongate members, and movable locators. This modular structure enables the system to be configured for different workpiece sizes while maintaining the guide channel's drilling accuracy through independent positioning adjustments.
Solution Approach 2:
The base is designed with multiple attachment points and the elongate members can be positioned at various locations, enabling the same jig apparatus to accommodate different workpiece sizes and drilling requirements. The measurement scales and locators provide universal positioning capability across multiple configurations.
3Ease of manufacture
If simple base structure is used, then ease of manufacture is improved, but positioning capability deteriorates
Solution Approach 1:
The positioning functionality is segmented into separate, independently manufacturable components: the base provides structural support, elongate members provide positioning references, and locators provide precise location selection. This segmentation allows each component to be manufactured using simple processes while collectively achieving high positioning precision.
Solution Approach 2:
The measurement scales are designed to be directly readable on the elongate members, and the locators can be manually positioned and locked without complex adjustment mechanisms. This self-service design enables precise positioning through simple visual alignment and manual operation, avoiding the need for complex manufacturing while achieving high precision.
Data Source
Figure 1~3
Figure 2a~2b
Figure 4a
AI summary
The invention relates to jig apparatus (2) for use in the positioning of a workpiece (22) in which one or more apertures are to be formed using a power tool (25), said jig including at least one elongate member (30, 32, 34), which is extendable from a side of the base (4) of the jig and connected thereto via engagement means (40). A locator (56) is selectively positionable on the elongate member and lockable in the said selected position to allow the workpiece to be located therewith and thereby locate the workpiece in a required position with respect to the jig apparatus.