Miniaturized Deburring Tool Internal Cooling and Chip Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Miniaturized deburring and chamfering tools face challenges with chip removal and cooling due to large chip volumes and limited heat dissipation, leading to jamming and reduced process reliability, especially in tools with cutting head diameters less than 4 mm.
Innovation Solution
A miniaturized deburring tool with internal cooling, where coolant flows partially around and through the tool body, with the deburring blade mounted parallel to the tool's longitudinal axis, ensuring effective chip removal and cooling by routing coolant along the moving parts and through the blade holder, and using a coolant sleeve for radial and axial flushing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the cutting head diameter is reduced for miniaturization, then the tool can access smaller bore diameters, but chip removal becomes difficult and heat dissipation is insufficient
Solution Approach 1:
The coolant flow path is segmented into multiple channels: a first coolant channel for radial flow onto the cutting head, and a second coolant channel for axial flow through the cutting head. This segmentation allows optimized cooling for each specific thermal zone, enabling reliable operation with miniaturized cutting heads.
Solution Approach 2:
A coolant system with pressurized fluid flow is implemented, using hydraulic principles to force coolant through narrow channels (radial and axial) to remove chips and dissipate heat from the miniaturized cutting head, ensuring process reliability despite reduced size.
2Volume of moving object
If the cutting head diameter is reduced, then miniaturization is achieved, but chip volumes remain relatively large causing jamming in small cross-sections
Solution Approach 1:
The coolant system extracts chips from the cutting zone through forced fluid flow. The radial coolant channel directs coolant onto the cutting head to flush chips away, while the axial channel provides additional chip ejection paths, preventing chip accumulation and jamming in the miniaturized tool.
Solution Approach 2:
The coolant flow, which could be considered a simple cooling medium, is converted into an active chip removal mechanism. The pressurized coolant transforms from merely a thermal management fluid into a dual-function medium that simultaneously cools the cutting head and actively ejects chips from the confined space.
3Temperature
If coolant flows centrally in the axial direction, then cooling is provided, but further miniaturization is prohibited due to structural width requirements
Solution Approach 1:
The cooling system transitions from purely axial coolant flow to a multi-dimensional flow pattern. The first coolant channel provides radial flow (adding a radial dimension to cooling), while the second channel maintains axial flow through the cutting head. This dimensional expansion enables effective cooling without increasing tool diameter.
Solution Approach 2:
The radial coolant channel is nested within the tool structure, with the axial coolant channel positioned centrally. The radial channel surrounds the axial channel path, creating a nested configuration that maximizes cooling surface area within the constrained tool diameter, enabling further miniaturization.
4Volume of moving object
If the receiving slot has small cross-sections for miniaturization, then the tool is compact, but chip and dirt removal is impaired and cleaning is difficult
Solution Approach 1:
The coolant acts as an intermediary cleaning agent that accesses the receiving slot through the radial coolant channel. The pressurized coolant flow penetrates into the narrow slot space to flush out chips and dirt, providing cleaning functionality without requiring physical access or disassembly of the miniaturized tool.
Solution Approach 2:
The tool performs self-cleaning through the integrated coolant system. The radial coolant channel continuously directs coolant onto the receiving slot area, automatically removing chips and contaminants during operation, eliminating the need for separate maintenance cleaning operations.
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
This design enhances process reliability by ensuring efficient chip and dirt removal, preventing jamming, and allowing for further miniaturization of the tool by maintaining effective cooling and flushing of the cutting head.
Implementation Method 1
coolant flows at least partially around and/or through the base body of the tool accommodating the deburring or chamfering blade in the longitudinal direction
Implementation Method 2
coolant is flowing through the receiving slot... coolant flows along the moving parts of the deburring or chamfering knife, so that their working and moving area is cooled and flushed
Implementation Method 3
there is a lack of the necessary heat dissipation on the miniaturized cutting heads to the rear of the tool body
Implementation Method 4
internal cooling by means of a coolant, which ensures reliable chip removal in the area of the cutting deburring or chamfering knife
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Miniaturized deburring and/or chamfering tool with a cylindrical guide sleeve (2) in which a knife holder base body (5) is interchangeably arranged, which has at least one receiving slot (20) for receiving and guiding a leaf-shaped knife (6) arranged therein and which is bendable along its longitudinal axis, which has a cutting head (7) with a deburring or chamfering knife arranged therein at its front free end, wherein internal cooling of the knife (6) and chip removal from the knife (6) are provided by the fact that the knife (6) is surrounded by coolant on at least two opposite sides in the receiving slot (20).