Portable Drill Press Integrated Clamp and Pinion Mechanism
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Solution Overview
Problem
Existing portable drill press devices lack accuracy and ease of use, especially when drilling large or hard-to-reach work pieces, as they require manual holding or separate clamps, limiting versatility and efficiency.
Innovation Solution
A portable drill press design featuring a hollow pillar with a base, a holder for a drill, and a clamp with a rotatable jaw and arm, which engages a threaded shaft for vertical movement, combined with a pinion and rack system for precise control, allowing the drill to be securely clamped to the work piece without the need for external power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a portable drill press is designed to be held against the work piece by the operator or uses a separate clamp, then the device can be made portable and used on site, but the drilling accuracy and ease of operation deteriorate
Solution Approach 1:
The patent combines the clamp and drill holder into a single integrated assembly that clamps to the work piece. The clamp arm and jaw are rotatable about the pillar axis, and the jaw is slidably restrained on the arm, allowing the entire drilling assembly to be securely attached to the work piece without requiring separate clamping operations or manual holding, thereby maintaining drilling accuracy while preserving portability
2Device complexity
If the clamp jaw is fixed on the arm, then the structure is simpler, but the versatility of the device deteriorates
Solution Approach 1:
The patent makes the jaw slidable on the arm rather than fixed, allowing the jaw position to be adjusted along the arm. This dynamic configuration enables the clamp to accommodate work pieces of varying sizes and shapes, improving versatility without significantly increasing structural complexity, as the sliding mechanism integrates naturally with the rotatable arm assembly
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enhances drilling accuracy and ease by providing a lightweight, versatile, and safe solution that can be used on-site, eliminating the need for external power and reducing occupational hazards, while allowing operation on various work piece sizes and orientations.
Implementation Method 1
a clamp with a jaw held by an arm which engages a threaded shaft housed in the pillar and configured to raise and lower the arm and the jaw accordingly
Implementation Method 2
a pinion rotatable by a lever, the pinion is pivoted in a housing and engages a rack formed on an outer surface of the pillar so that rotating the lever urges the drill vertically towards or away from the work piece
Implementation Method 3
a spring located on either side of the arm to restrain movement of the jaw
Data Source
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AI summary
A drill press comprises a hollow pillar with a base, a holder for a drill slidably mounted on the pillar and a clamp integral to the pillar for clamping the base to a work piece so that the drill Is guided to the work piece. The clamp is a G clamp with a jaw held by an arm which engages a screw thread shaft housed in the pillar so that rotating the shaft raises and lowers the arm and the jaw.