Three-Core-Bit Drilling Layout for Faster Multi-Hole Boring
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Solution Overview
Problem
Conventional core drilling machines are inefficient for drilling multiple holes as they require manual relocation and operation for each hole, leading to increased time and labor costs, especially in large-scale factory settings.
Innovation Solution
A three-hole core drilling machine design featuring a vertically reciprocating carriage with a drive shaft and two driven shafts, allowing for simultaneous drilling of three holes with adjustable pivot angles and distances between the core bits, facilitated by a gear system and water supply for cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional core drilling machine with a single core bit is used, then the device complexity is low, but the productivity is low because multiple holes require sequential drilling with repeated relocation and repositioning
Solution Approach 1:
The drilling function is segmented into three independent core bits (first, second, and third core bits) that can operate simultaneously. Each core bit is mounted on a separate drivable shaft (drive shaft and driven shafts) that can be independently rotated by the motor, allowing three holes to be drilled at the same time rather than sequentially
Solution Approach 2:
Multiple drilling functions are merged into a single machine by combining three core bits with different drilling functions (e.g., different diameters, depths, or orientations) into one integrated device. The motor simultaneously drives all three core bits through the gear system, merging what would traditionally require three separate drilling operations into one simultaneous operation
2Loss of time
If a conventional core drilling machine is relocated for each hole, then the device complexity remains simple, but the loss of time increases due to repeated positioning and repositioning operations
Solution Approach 1:
The machine transitions from a single-point drilling operation to a multi-point simultaneous operation by adding spatial distribution of three core bits at different positions and/or orientations. This dimensional expansion allows the machine to cover multiple hole locations without relocation, effectively adding a spatial dimension to the drilling capability
3Productivity
If multiple core bits are mounted to drill multiple holes simultaneously, then the productivity increases, but the ease of operation decreases due to complex adjustment of pivot angles and distances
Solution Approach 1:
The machine incorporates adjustable and movable components that allow dynamic configuration of the three core bits. The pivot angles and distances between core bits can be adjusted during operation or setup to adapt to different drilling patterns and requirements, making the system flexible rather than fixed
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 simultaneous drilling of three holes with adjustable angles and distances, significantly reducing drilling time and labor costs by allowing multiple holes to be drilled efficiently in a single setup.
Implementation Method 1
a drive gear coupled to the drive shaft and a pair of driven gears coupled to a pair of driven shafts rotatably mounted to the pair of moving plates
Implementation Method 2
Water supply hoses may be connected to lower portions of the drive shaft and the pair of driven shafts, respectively, to supply cooling water
Implementation Method 3
a stand disposed to be perpendicular to the base and formed with a rack at one side surface thereof, a driving body with a pinion mounted therein, the driving body being vertically reciprocable along the stand in accordance with a rotating operation of a handle
Data Source
AI summary
A three-hole core drilling machine of the invention includes a body, a vertically reciprocating carriage vertically reciprocably mounted to the body, a fixing plate coupled to one side surface of the carriage, to rotatably support a drive shaft of a motor, a pivoting plate fastened to the fixing plate under a condition that a pivot angle of the pivoting plate is changed. a pair of moving plates movably mounted to opposite sides of the pivoting plate, a drive gear coupled to the drive shaft and a pair of driven gears coupled to a pair of driven shafts rotatably mounted to the pair of moving plates, a pair of moving gears mounted between the drive gear and the pair of driven gears, a first core bit coupled to the drive shaft, and a second core bit and a third core bit coupled to the pair of driven shafts.