Coolant-Guided Machining Tool for Close-to-Edge Insert Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing machining tools with internal coolant ducts face challenges in directing coolant close to the cutting insert's lip region, leading to inefficient cooling and increased wear, while also complicating the exchange of cutting inserts due to complex structures and distant coolant outlet arrangements.
Innovation Solution
A tool design featuring a coolant guiding attachment with two outlet openings positioned close to the main cutting edge, allowing for independent fastening and easy exchange of the cutting insert and coolant guiding attachment, ensuring efficient coolant delivery and reduced wear through a compact, plate-like configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the coolant outlet opening is arranged on a tower-like structure behind and above the cutting insert, then the coolant can be directed onto the main cutting edge, but the coolant outlet opening is arranged relatively far away from the main cutting edge, reducing cooling efficiency
Solution Approach 1:
The coolant outlet opening is positioned in the plane of the main cutting edge by extending the coolant duct laterally through the holder body, changing the spatial arrangement from a vertical tower structure to a horizontal in-plane configuration, thereby reducing the distance to the cutting edge
2Temperature
If a tubular nozzle axially movable is used to position the coolant outlet close to the lip, then cooling close to the lip is achieved, but the tubular nozzle can easily break and requires a relatively tall structure on the holder
Solution Approach 1:
The movable tubular nozzle component is completely removed from the design. Instead, the coolant outlet opening is directly formed in the holder body at the desired position in the plane of the cutting edge, eliminating the fragile movable nozzle while achieving the same cooling effect
Solution Approach 2:
The coolant delivery system is segmented into a fixed holder body with integrated coolant ducts and a separate cutting insert, allowing the coolant outlet to be positioned independently at the optimal location without requiring a tall structure or movable components
3Ease of manufacture
If the coolant outlet opening is arranged far away from the main cutting edge, then the holder structure can be simplified, but cooling efficiency is reduced and cutting insert wear increases
Solution Approach 1:
The holder body is designed with multi-functionality, serving both as the mounting structure for the cutting insert and as the integrated coolant delivery system, with coolant ducts extending laterally through the holder to position the coolant outlet in the plane of the cutting edge, achieving both structural simplicity and effective cooling
4Device complexity
If the coolant guiding attachment is integrated with the holder structure, then the structure is more compact, but the cutting insert cannot be exchanged independently without removing the coolant guiding attachment
Solution Approach 1:
The system is segmented into three independent components: the holder body, the cutting insert, and the coolant guiding attachment. The coolant guiding attachment is fastened to the holder with a second fastening element separate from the cutting insert fastening, allowing the cutting insert to be exchanged independently while maintaining a compact integrated structure
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 tool achieves close-to-lip cooling with improved coolant distribution along the cutting edge, reducing wear and facilitating easy insert exchange without requiring removal of the coolant guiding attachment, thus enhancing machining quality and tool longevity.
Implementation Method 1
The coolant serves substantially to cool and lubricate the cutting insert while it is being used
Implementation Method 2
The coolant serves substantially to cool and lubricate the cutting insert while it is being used
Implementation Method 3
the coolant also helps to improve chip formation and thus increases the quality of the surface finish on the workpiece to be machined
Implementation Method 4
In addition to reducing cutting-insert wear, the coolant also helps to improve chip formation
Data Source
AI summary
Tool for machining a workpiece, comprising: a holder having a first internal coolant duct; a cutting insert having a main cutting edge; a first fastening element for releasably fastening the cutting insert to the holder; a plate-like coolant guiding attachment having a second internal coolant duct; and a second fastening element for releasably fastening the coolant guiding attachment to the holder. In the assembled state of the tool, the first internal coolant duct is fluidically connected to the second internal coolant duct and the coolant guiding attachment covers at least a part of the cutting insert. The coolant guiding attachment comprises a first opening, which is configured as a recess or through-opening and allows access to the first fastening element, such that the cutting insert is separately releasable from the holder by releasing the first fastening element even when the coolant guiding attachment is fastened to the holder, and the coolant guiding attachment is separately releasable from the holder by releasing the second fastening element even when the cutting insert is fastened to the holder.