Cutting Insert Clamping With Sealed Coolant Interface
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Solution Overview
Problem
Existing tool systems for machining difficult-to-cut materials like nickel-based alloys and titanium alloys face challenges in maintaining sealing tightness and optimizing cooling efficiency, leading to increased production costs and reduced machining parameters.
Innovation Solution
A tool system with a clamping mechanism that includes a clamping element with an annular surface and a depression on the cutting insert, along with fluid channels for cooling, and a sealing element that ensures a pressure-tight connection between the tool holder and clamping element, allowing for secure clamping and efficient fluid delivery to the shear zone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a seal is arranged between the clamp and the main body to ensure sealing tightness, then the sealing reliability is improved, but the maintenance complexity increases because the seal also has to be changed when the cutting insert is replaced
Solution Approach 1:
The sealing function is extracted from the clamp assembly and integrated into the tool holder body through sealing grooves and sealing elements (O-rings or唇形密封件). This allows the seal to remain in the tool holder while the cutting insert and clamp can be replaced independently, eliminating the need to replace the seal with every insert change.
Solution Approach 2:
The sealing structure is merged with the tool holder body by incorporating sealing grooves directly into the tool holder's architecture. The sealing elements are embedded within these grooves, creating an integrated sealing system that remains stationary while allowing the cutting insert and clamp to be replaced separately.
2Temperature
If coolant channels are provided in the clamp and main body to cool the machining region, then the cooling efficiency is improved, but the structural complexity increases due to the need for pressure-tight connection elements
Solution Approach 1:
The coolant channels in the tool holder and clamp are merged into a continuous pressure-tight system through integrated sealing grooves and sealing elements. This allows coolant to flow efficiently through both components without requiring additional complex sealing mechanisms, as the same sealing structure serves both the sealing and coolant channel connection functions.
3Force
If the clamping element uses a conventional clamping mechanism, then the clamping force is sufficient, but the positioning precision of the cutting insert decreases
Solution Approach 1:
The clamping element features an asymmetric design with a clamping face that is offset from the central axis and inclined at an angle (5-15 degrees) relative to the clamping direction. This asymmetric configuration, combined with the annular clamping surface, creates both clamping force and a positioning moment that ensures precise alignment of the cutting insert with the tool holder axis.
Solution Approach 2:
The annular clamping surface acts as an intermediary element between the clamping force and the cutting insert positioning. This annular surface distributes the clamping force uniformly around the cutting insert's circumference while simultaneously providing a reference surface that ensures precise positioning and alignment.
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 solution enables improved clamping security and efficient cooling, allowing for higher machining parameters and reduced production costs by maintaining sealing integrity and optimizing cooling efficiency in the shear zone.
Implementation Method 1
a sealing element that ensures a pressure-tight connection between the tool holder and clamping element
Implementation Method 2
fluid channels for the purpose of cooling... allowing for efficient fluid delivery to the shear zone... Purposeful cooling in the shear zone of the chip generation
Implementation Method 3
a clamping element that has an opening for receiving a clamping means... enables improved clamping security
Data Source
AI summary
Tool system 1 comprising a tool holder 2 that has an insert seat 17 for receiving a cutting insert 6, and comprising a clamping element 4 that has an opening 26 for receiving a clamping means 15, an interface 30 being arranged between the tool holder 2 and the clamping element 4, and channels for the purpose of cooling by means of a fluid being arranged in the tool holder 2 and the clamping element 4, and a sealing means 31 being arranged in the region of the interface 30.