Four-Core-Bit Drilling Layout for Faster Multi-Hole Boring
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Solution Overview
Problem
Conventional core drilling machines require multiple movements and anchor bolt fixings for drilling multiple holes, making the process laborious and time-consuming.
Innovation Solution
A four-hole core drilling machine that simultaneously rotates four core bits using a vertically reciprocating carriage, a motor, a pivoting plate, and a belt or chain system to transmit rotation force to four core bits, allowing for simultaneous drilling of four holes at various spacings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional core drilling machine uses only one core bit, then the device complexity is low, but the productivity is low because multiple holes require multiple movements and anchor bolt fixings
Solution Approach 1:
The patent combines four core bits into a single integrated drilling device, allowing simultaneous drilling of four holes. The four core bits are mounted on a common support structure and rotated together by a single motor, merging multiple drilling functions into one device operation.
Solution Approach 2:
The patent segments the drilling function into four independent core bits that can operate simultaneously. Each core bit is independently positioned and can drill a separate hole, allowing parallel processing of multiple drilling tasks in one operation.
2Loss of time
If a conventional core drilling machine drills holes one by one, then the device complexity is low, but the loss of time is high due to repetitive movements and anchor bolt fixings
Solution Approach 1:
The patent enables continuous useful action by drilling four holes simultaneously in one operation. The single motor continuously rotates all four core bits at once, eliminating the need to stop, move, and reposition between holes, thereby maintaining continuous productive action throughout the drilling process.
3Manufacturing precision
If the pivoting plate is fixed at a predetermined pivot position, then the manufacturing precision is improved, but the adaptability is reduced
Solution Approach 1:
The patent makes the pivot position dynamic and adjustable rather than fixed. The pivoting plate can be adjusted to different pivot positions along the stand, allowing the four core bits to accommodate various hole spacing requirements while maintaining precise positioning through the adjustable mechanism.
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 efficient and time-saving drilling of multiple holes by reducing the need for repetitive movements and anchor bolt fixings, enhancing productivity.
Implementation Method 1
a belt (170) mounted around the drive pulley (144) and the four driven pulleys (174), to transmit rotation force of the drive pulley (144) to the four driven pulleys (172)
Implementation Method 2
a stand (120) vertically coupled to the base (110) and formed with a rack (122) at one side surface thereof, a vertically reciprocating carriage (130) vertically reciprocably mounted to the stand (120) and provided with a pinion engaged with the rack (122)
Data Source
AI summary
A four-hole core drilling machine of the invention includes a vertically reciprocating carriage mounted to a body, a motor coupled to the carriage, a fixing plate coupled to the carriage, to rotatably support a drive shaft of the motor, a pivoting plate fastened to the fixing plate under the condition that a pivot angle of the pivoting plate is changed, a drive pulley coupled to the drive shaft, to be rotatable by the drive shaft, four driven pulleys rotatably mounted to the pivoting plate near corners of the pivoting plate, four driven shafts rotatably mounted to the pivoting plate and coupled to the four driven pulleys, to be rotatable by the driven pulleys, a belt mounted around the drive pulley and the driven pulleys, to transmit rotation force of the drive pulley to the driven pulleys, and four core bits coupled to lower ends of the driven shafts.