Pocket Hole Drilling Device with Reciprocating Drill Bit Holder
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Solution Overview
Problem
Existing pocket hole drilling devices are inefficient due to the need for repeated insertion and removal of drill bits, leading to drill bit wear and misalignment issues, and require cumbersome clamping systems that are time-consuming and require additional equipment like pneumatic compressors.
Innovation Solution
A portable pocket hole drilling device with a drill guide carrier and anti-skid structures that allows for clamping and drilling without removing the drill bit, featuring a reciprocally mounted drill bit holder, adjustable guide structure, and anti-skid pins for secure positioning, enabling efficient drilling of pocket holes across various workpiece thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If drill bit is repeatedly inserted and removed from guide bushings, then drilling operation can be performed, but drill bit wear and misalignment issues occur
Solution Approach 1:
The drill bit is pre-installed in the drill bit holder before the drilling operation begins. The holder is then reciprocated into position, eliminating the need for repeated insertion and removal of the drill bit from guide bushings, thereby preventing misalignment and wear.
Solution Approach 2:
A drill bit holder serves as an intermediary component that retains the drill bit and facilitates its movement into and out of the guide bushing. This mediator prevents direct repeated insertion/removal of the drill bit itself, protecting the cutting edge from damage.
2Ease of operation
If pneumatic foot switch actuator is used for clamping, then convenience and speed are improved, but additional equipment like air compressor is required
Solution Approach 1:
The clamping system is designed to be manually operated through simple mechanical means, allowing the user to clamp and unclamp the workpiece without requiring external pneumatic equipment. The system serves itself through direct user interaction.
3Volume of moving object
If short stroke pneumatic cylinder is used for clamping, then device size is reduced, but additional extension plate is required for thin workpieces
Solution Approach 1:
The clamping system incorporates adjustable components that can be repositioned or extended to accommodate different workpiece thicknesses. This dynamic adjustability allows the same clamping mechanism to handle both thin and thick workpieces without requiring additional extension plates or pneumatic equipment.
4Reliability
If drill chuck is placed in between drill bit and drill bit carrier, then drill bit is retained, but axial space is obstructed
Solution Approach 1:
The drill chuck is removed from the system entirely. Instead, the drill bit is directly retained in the drill bit holder through a simplified retention mechanism that does not require the intermediate chuck component, thereby eliminating the axial space obstruction and maximizing the available drilling stroke.
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 device reduces drill bit wear and misalignment issues, allows for efficient drilling without clamping and unclamping, and accommodates different workpiece thicknesses, enhancing drilling speed and accuracy while eliminating the need for pneumatic compressors.
Implementation Method 1
the drill bit holder is returned to the pre-drilling position by frictional means or spring bias
Implementation Method 2
anti-skid pins disposed on the front surface... so as to move the clamp body toward the drill guide carrier so as to clamp the workpiece during drilling
Data Source
AI summary
A device for drilling pocket holes may include a guide carrier having a front surface urging a workpiece; at least one slant bore disposed at the guide carrier for receiving a drill bit; an anti-skid structure disposed at the front surface to secure the workpiece; a drill bit carrier reciprocally and slidably mounted on the guide carrier from a pre-drilling position to a post-drilled position toward and away from the guide carrier and a drill bit rotatably coupled and retained therein; a clamp disposed at the base and an amplifier to actuate the clamp for clamping or unclamping the workpiece by a user's power, wherein the amplifier is disposed away from the base; a quick positioning of the clamp by a braking lever; a lateral stop disposed at the clamp to set a lateral position of the pocket hole from a side face of workpiece; an adjustable end stop disposed at the guide structure or the guide carrier to adjust a pocket hole distance from an end face of workpiece; a lateral through opening disposed at the guide carrier and connected to the slant bore to remove waste material generated from workpiece drilling; a sensor disposed in a waste material remover to activate a blower when a drill motor driving the drill bit is turned on; the slant bore whose diameter is at least 7/16 inch to receive a corresponding pocket drill bit; a shank of the drill bit adapted to engage with a quick-change adapter; and a portion of pocket drill bit made of more wear-resistant material than that of the shank.