Through-Tool Coolant Adapter for Drilling Motor
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Solution Overview
Problem
Machining elements, such as drill bits, face efficiency issues due to particles wedged between the tool and workpiece, leading to re-machining and potential material erosion when dealing with layered workpieces of different materials, causing bore size inconsistencies.
Innovation Solution
A tool system that incorporates an annular seal assembly, collet chuck, and a passage for fluid communication, allowing a cooling fluid to flow through the machining element, which removes thermal energy and sweeps away particles, preventing re-machining and material erosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If machining is performed through layered workpieces of different materials, then material removal is achieved, but particles become wedged between the machining element and workpiece causing re-machining and heating
Solution Approach 1:
Cooling fluid is delivered through the machining element before and during the machining operation to prevent particles from becoming wedged between the machining element and workpiece, thereby avoiding re-machining and heating issues
Solution Approach 2:
A fluid delivery system using hydraulic principles pumps cooling fluid through passages in the machining element, utilizing fluid pressure to force particles out from between the machining element and workpiece, preventing harmful particle wedging
2Manufacturing precision
If particles are removed from layered workpieces, then material is machined, but particles erode material of other layers and enlarge bore diameter beyond tolerance
Solution Approach 1:
Cooling fluid is delivered through the machining element before particles can erode other layers, creating a protective fluid barrier that prevents particles from contacting and eroding the workpiece layers, thereby maintaining bore diameter within specified tolerances
Solution Approach 2:
Hydraulic pressure forces cooling fluid through the machining element and into the bore, using the fluid stream to sweep particles away from the bore and prevent them from eroding other layers, thus maintaining manufacturing precision
3Object-generated harmful factors
If cooling fluid is delivered through the machining element, then particles are swept away and re-machining is prevented, but device complexity increases with seal assemblies and fluid lines
Solution Approach 1:
The cooling fluid delivery system is integrated with the machining element itself, combining the tool body and fluid delivery function into a single unified component, thereby reducing overall system complexity while maintaining effective particle removal
Solution Approach 2:
The machining element serves multiple functions: cutting the workpiece and simultaneously delivering cooling fluid through its internal passages, eliminating the need for separate cooling delivery mechanisms and reducing device complexity
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
Enhances machining efficiency by preventing re-machining of particles and reducing material erosion between layers, maintaining specified tolerances by effectively cooling and cleaning the machining area.
Implementation Method 1
fluid flowing through the fluid flow line into the annulus is flowable through the passage in the machining element
Implementation Method 2
fluid flowing through the fluid flow line into the annulus is flowable through the passage in the machining element
Data Source
AI summary
A collet chuck for use in boring through a workpiece that provides a cooling and cleaning fluid to the element that is machining the workpiece. One end of the collet chuck is coupled to the drive end of a motor and its other end retains the machining element. The motor provides a rotational force to the collet chuck and machining element used in machining the workpiece. The machining element, which can be a drill bit or reamer, includes an axial passage that communicates with an annulus in the chuck. The cooling/cleaning fluid flows into the annulus through a rotary seal that circumscribes the collet chuck.