Spring-Supported Drill Bit Stopper for Precise Depth Setting
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Solution Overview
Problem
Conventional drill bit depth adjustment methods are cumbersome, prone to errors, and require additional tools or storage space, leading to potential loss and increased thickness due to headless bolts, making precise depth control difficult and inconvenient.
Innovation Solution
A depth-adjustable stopper for drill bits that moves axially along a male thread portion, supported by a spring to prevent shaking and backed by a fastener body, allowing for easy and accurate depth adjustment without additional tools, and can be directly stored with the drill bit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a gradation support with support fastener is used to adjust drill bit depth, then depth adjustment capability is provided, but the operation becomes cumbersome requiring coupling and releasing of fasteners
Solution Approach 1:
The depth stopper is merged with the drill bit by directly forming the threaded portion on the drill bit body itself, eliminating the separate support fastener and coupling mechanism. The stopper simply threads onto the drill bit's external thread to set depth, making operation trivial without complex assembly/disassembly steps.
Solution Approach 2:
The invention extracts and eliminates the unnecessary support fastener component from the depth adjustment system. By providing an external thread directly on the drill bit, the patent removes the intermediate fastening mechanism that caused operational complexity, leaving only the essential depth-stopping function.
2Reliability
If a gradation support is separated from the casing for depth adjustment, then depth control is possible, but additional storage space is required and risk of loss increases
Solution Approach 1:
The depth stopper is combined with the drill bit as an integrated assembly. The stopper threads directly onto the drill bit's external thread, creating a unified tool that requires no separate storage space. Both components are stored together in the same pocket or container, eliminating the risk of separation and loss.
3Manufacturing precision
If a headless bolt is used for depth adjustment fastening, then depth setting is achievable, but the thickness of the drill bit assembly increases
Solution Approach 1:
The invention removes the headless bolt component entirely by providing an external thread directly on the drill bit. The depth stopper threads onto this external thread without requiring any intermediate fastening element, thereby eliminating the thickness addition that would result from using a headless bolt and washer 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
Enables easier, accurate, and stable drilling to a predetermined depth, eliminating the need for separate storage and reducing the risk of depth errors, while allowing for thinner designs and easier handling during use.
Implementation Method 1
a spring configured to prevent the depth-adjustable stopper from being shake or pushed back due to a gap of the male thread portion
Data Source
AI summary
The present invention relates to a depth adjustment stopper for a drill bit. The present invention enables easy workability during forming of a drilled groove having a fixed depth into a material by means of a drill bit. The depth adjustment stopper coupled to the drill bit is supported by means of the tension of a spring. Therefore, the depth adjustment stopper is prevented from shaking or being pushed.