Multi-Function Conduit Reamer with Locking Drill Bit Holder
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Solution Overview
Problem
Conventional conduit reamers lack versatility and efficiency in handling different pipe diameters, as they are typically designed for specific sizes and do not easily accommodate multiple functions such as reaming and drilling.
Innovation Solution
A conduit reamer tool with a cylindrical body featuring multiple stepped portions and integral or separate hook-shaped blades for reaming various diameters, combined with a locking mechanism to securely hold a tool bit for multi-functionality, allowing for easy switching between reaming and drilling tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional conduit reamers are designed for specific sizes, then manufacturing precision is improved, but adaptability deteriorates
Solution Approach 1:
The conduit reamer is designed with multiple stepped portions (first, second, and third cylindrical portions with different diameters) that can accommodate conduit reamers of different sizes, allowing a single tool to handle multiple conduit sizes (1/2 inch, 3/4 inch, 1 inch, etc.). This multi-functional design resolves the contradiction by enabling the tool to adapt to different sizes while maintaining precise reaming capability through properly fitted reamer bits for each size.
Solution Approach 2:
The conduit reamer employs a nested structure where multiple cylindrical portions with different diameters are integrated into a single body, and different sized conduit reamers can be nested within corresponding cylindrical portions. This nesting approach allows the tool to maintain manufacturing precision for each specific size while providing adaptability across multiple sizes through the hierarchical structure.
2Device complexity
If conduit reamers are designed for single function, then device complexity is reduced, but versatility deteriorates
Solution Approach 1:
The conduit reamer is designed as a multi-functional tool that can perform both reaming operations (using conduit reamers of different sizes) and drilling operations (using drill bits secured in the drill bit holder). The tool body integrates multiple cylindrical portions for different reamer sizes and a drill bit holder, allowing a single tool to replace multiple specialized tools while maintaining manageable complexity through modular design.
Solution Approach 2:
The invention merges the functions of multiple separate tools (different sized conduit reamers and drill bits) into a single integrated tool body. The tool body combines multiple cylindrical portions for reaming with a drill bit holder and locking mechanism, consolidating what would traditionally require separate tools into one versatile unit, thereby improving versatility without proportionally increasing complexity.
3Ease of operation
If tool bits are not securely retained, then ease of operation is improved, but reliability deteriorates
Solution Approach 1:
The locking mechanism employs a dynamic design where the locking member can be moved between locked and unlocked positions. In the unlocked position, tool bits can be easily inserted or removed; in the locked position, the locking member secures the tool bit firmly in place. This dynamic mechanism resolves the contradiction by providing ease of operation during bit changes while ensuring reliable retention during actual drilling or reaming operations.
Data Source
AI summary
A conduit reamer for a cutting tool includes a generally cylindrical body having a longitudinal axis and a blade coupled to the generally cylindrical body. The blade includes a first blade portion defining a first height of the conduit reamer with respect to the longitudinal axis and a second blade portion defining a second height of the conduit reamer with respect to the longitudinal axis, wherein the first height is different than the second height. The conduit reamer further includes a shank end having a shank configured to be received and driven by the cutting tool, a bit end opposite the shank end and having a cavity configured to receive a tool bit, and a locking mechanism positioned proximate the bit end and configured to secure the tool bit within the cavity.