Cutting Insert Coolant Trough for Heat Reduction
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Solution Overview
Problem
Conventional metal cutting systems face issues with excessive heat at the insert-chip interface, leading to reduced tool life, chip welding, and re-cutting, which decrease production efficiency and increase operating costs.
Innovation Solution
A cutting assembly with a holder containing a coolant passage and a seat, featuring a stud with an exterior longitudinal trough that directs coolant to the cutting insert-workpiece interface, ensuring effective cooling and chip evacuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If external nozzles are used to direct coolant at the cutting edge from a distance of one to twelve inches, then the coolant can reach the cutting area, but the coolant mixes with air during travel and fails to effectively contact the tool-chip interface
Solution Approach 1:
The invention extracts the coolant delivery function from external nozzles and relocates it directly to the cutting insert through internal coolant channels. This eliminates the intermediate travel path where coolant mixes with air, ensuring direct and effective contact with the tool-chip interface while maintaining temperature control.
Solution Approach 2:
The coolant channels are nested within the cutting insert structure itself, with channels formed inside the insert body and outlets positioned at the cutting edge. This nested arrangement allows coolant to be delivered directly from the interior of the insert to the cutting interface, eliminating external delivery paths and improving reliability.
2Device complexity
If coolant is delivered from external nozzles at a distance, then the system structure is simple, but the coolant fails to effectively cool the insert-chip interface due to mixing with air
Solution Approach 1:
The invention merges the coolant delivery system with the cutting insert structure by integrating internal channels and outlets directly into the insert. This combination eliminates the need for separate external nozzle systems while achieving superior cooling effectiveness at the insert-chip interface.
3Duration of action of moving object
If chip material builds up on the cutting insert due to welding at the insert-chip interface, then tool life is reduced, but effective coolant delivery can prevent this welding
Solution Approach 1:
The invention applies preliminary cooling action by delivering coolant directly to the insert-chip interface before excessive heat can cause welding and chip build-up. This preventive cooling maintains lower temperatures at the cutting interface, preventing the harmful welding phenomenon before it occurs and extending tool life.
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 solution effectively reduces excessive heat at the insert-chip interface, preventing chip welding and re-cutting, thereby extending tool life and enhancing production efficiency by ensuring efficient coolant delivery directly to the cutting area.
Implementation Method 1
A flow of coolant to the insert-chip interface will reduce the potential for such welding... A flow of coolant to the insert-chip interface will facilitate the evacuation of chips from the insert-chip interface thereby minimizing the potential that a chip will be re-cut
Data Source
AI summary
A cutting assembly useful for the chipforming removal of material from a workpiece at the cutting insert-workpiece interface. The cutting assembly has a holder with a coolant passage and a seat. As one option, a stud extends away from the seat and facilitates coolant flow to an insert locking cap, which attaches to the stud. The insert locking cap directs coolant flow toward the cutting insert-workpiece interface. As another option, a diverter plate has a bottom surface with a bowl and an arcuate forward surface with one or more openings. Coolant flows from the coolant passage into the bowl then exits through at least one opening in the arcuate forward surface towards the cutting insert-workpiece interface.