Air Control Device for Pneumatic Drills
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Solution Overview
Problem
Conventional air control devices for pneumatic drill driving devices face difficulties in smoothly discharging chips during drilling, leading to potential clogging and reduced efficiency.
Innovation Solution
An air control device and method that utilizes a time delay valve system to alternately discharge air for advancing and retracting tools, allowing for adjustable advancement and retreat times and distances, thereby facilitating effective chip removal through step drilling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If continuous air flow is used to advance the drill, then drilling speed is improved, but chips accumulate and clog the hole
Solution Approach 1:
The air control device implements periodic action by alternately supplying air pressure to advance the drill and then retracting it, creating a rhythmic feed-retract cycle. This periodic air pressure variation prevents chip accumulation by periodically clearing the hole, resolving the contradiction between maintaining high drilling speed and preventing chip clogging.
Solution Approach 2:
The system dynamically adjusts air pressure timing and duration based on drilling depth and chip accumulation conditions. The air pressure is applied intermittently rather than continuously, with the timing and duration optimized to maintain drilling speed while preventing clogging, transforming the static continuous flow into a dynamic controlled process.
2Ease of operation
If manual switching is used to control air flow, then operation simplicity is maintained, but productivity decreases due to frequent manual intervention
Solution Approach 1:
The air control device embodies self-service by automatically controlling the air pressure timing and duration without requiring manual intervention. The system self-regulates the feed and retract cycles based on pre-set parameters, eliminating the need for operators to manually switch air flow while maintaining operational simplicity and significantly improving drilling productivity.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor drilling progress and chip accumulation, automatically adjusting air pressure application timing and duration. This closed-loop control enables the system to self-optimize performance without manual intervention, resolving the contradiction between ease of operation and productivity.
3Manufacturing precision
If step drilling with adjustable times is implemented, then hole quality is improved, but device complexity increases
Solution Approach 1:
The air control device improves hole quality by precisely controlling air pressure parameters including timing, duration, and intensity of feed and retract cycles. By adjusting these parameters, the system optimizes chip removal at different drilling depths, creating high-quality holes. The parameter control is achieved through integrated timing mechanisms that, while adding some complexity, provide precise control necessary for quality improvement.
Solution Approach 2:
The system dynamically adjusts air pressure parameters based on real-time drilling conditions and depth, transforming static fixed-timing control into dynamic adaptive control. This dynamic parameter adjustment optimizes hole quality throughout the drilling process while the complexity is managed through automated control logic that adapts to changing conditions.
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 air control device prevents chip clogging, enhances drilling efficiency, and improves hole quality, especially for deep holes, by ensuring continuous and controlled air flow, allowing for automatic step drilling operations without the need for manual switching.
Implementation Method 1
A pneumatic drill driving device is capable of applying a feed operation in a tool axis direction to a drill using air pressure
Implementation Method 2
an air control system having a function for discharging air from the air discharge ports alternately for respective preset times
Data Source
Figure 1
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Figure 4
AI summary
There are provided an air control device (1) and an air control method. The air control device (1) includes an air suction port (6), air discharge ports (10), and an air control system (11). The air suction port (9) takes in air. The air discharge ports (10) discharge the taken-in air. The air control system (11) discharges the air through the air discharge ports (10) alternately for respective preset times. The air control method includes: taking in air; and discharging the air alternately through air discharge ports (10) for respective preset times.