Grooving Tool Insert Cooling Channel for Cutting Edge Wear
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Solution Overview
Problem
Existing grooving tools suffer from inefficient coolant delivery to the cutting edge, leading to insufficient cooling and increased wear due to chip obstruction and stress on the rake face.
Innovation Solution
A coolant channel design that integrates directly through the cutting insert, with the inlet on the holder-side end face and a curved section within the insert, allowing coolant to reach the cutting edge and rake face effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the coolant channel terminates above the cutting insert with the outlet directed at the cutting edge, then the coolant jet is directed at the cutting edge, but the coolant loses significant kinetic energy before reaching the cutting edge and chip obstruction occurs
Solution Approach 1:
The coolant channel is divided into two separate sections: a first channel section in the holder and a second channel section in the cutting insert. This segmentation allows the coolant to be delivered directly to the cutting edge through the insert, maintaining kinetic energy and preventing chip obstruction, while solving the cooling effectiveness problem.
Solution Approach 2:
The second channel section is nested within the cutting insert itself, with the coolant channel running through the insert from the holder-side end face to the rake face. This nesting enables direct coolant delivery to the cutting edge without external obstructions, maintaining high kinetic energy and effective cooling.
2Object-generated harmful factors
If the coolant channel opens into the insert holder for indirect cooling from behind, then chip flow interference is prevented, but the cutting edge and rake face receive insufficient cooling
Solution Approach 1:
Instead of cooling the insert indirectly from behind through the holder, the coolant channel is inverted to run directly through the cutting insert from the holder-side end face to the rake face. This reversal enables direct cooling of the cutting edge and rake face, preventing overheating while maintaining chip flow clearance.
3Temperature
If the coolant channel runs through the cutting insert with inlet on the holder-side end face and outlet in the rake face, then direct cooling close to the cutting edge is achieved, but the channel complexity increases
Solution Approach 1:
The coolant channel structure merges the holder and cutting insert into an integrated cooling system. The first channel section in the holder connects directly to the second channel section in the cutting insert, creating a continuous coolant path that simplifies the overall structure while achieving direct cooling at the cutting edge.
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 cooling and lubrication near the cutting edge, reducing wear and stress on the rake face, thereby improving machining quality.
Implementation Method 1
the coolant channel has a first channel section which extends between a holder inlet opening, arranged on one of the two longitudinal sides, and a holder outlet opening which opens into the first cutting insert receptacle. The coolant channel has a second channel section which extends inside the cutting insert between a cutting insert inlet opening and a cutting insert outlet opening
Implementation Method 2
the coolant jet loses a significant portion of its kinetic energy before reaching its actual point of impact
Implementation Method 3
improved cooling and lubrication near the cutting edge, reducing wear and stress on the rake face
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The invention relates to a grooving tool (10) having a cutting insert receptacle (34) which is arranged on a first of the two end faces (28, 30) of the grooving tool (10). The grooving tool (10) also has a cutting insert (14), which can be fastened detachably in the first cutting insert receptacle (34), and an internal coolant channel (48). The coolant channel (48) comprises a first channel part (50) which extends between a holder inlet opening (54), which is arranged on one of the two long sides (20, 22) of the grooving tool (10), and a holder outlet opening (56), which opens into the cutting insert receptacle (34). Furthermore, the coolant channel (48) comprises a second channel part (52) which extends in the interior of the cutting insert (14) between a cutting insert inlet opening (60) and a cutting insert outlet opening (62). The holder outlet opening (56) and the cutting insert inlet opening (60) overlap at least partially so that the first channel part (50) transitions directly into the second channel part (52) when the cutting insert (14) is fastened in the cutting insert receptacle (34).