Milling Tool Cover Sealing via Independent Threaded Joint
Solution Overview
Problem
Existing milling tools face inefficiencies in fluid distribution due to pressure loss and leakage issues when using a single threaded joint for both securing the head and holder and sealing the chamber, leading to reduced liquid pressure and effectiveness in chip removal and cooling.
Innovation Solution
A milling tool design where the cover is tightenable against the ring surface using a second independent threaded joint, allowing for reliable sealing and fluid distribution through separate threads, preventing leakage and ensuring proper tightening of the screw and holder connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single threaded joint is used to secure both the head and holder connection and seal the chamber, then the device complexity is reduced, but the reliability of sealing and fluid pressure maintenance deteriorates due to interference between tightening functions
Solution Approach 1:
The patent divides the single threaded joint into two separate threaded joints: a first threaded joint for securing the head and holder connection, and a second threaded joint for sealing the chamber. This segmentation eliminates the interference between tightening functions, allowing each joint to be optimized for its specific purpose and ensuring reliable sealing without compromising the structural connection.
2Manufacturing precision
If a single threaded joint is used for both connection and sealing, then the manufacturing precision requirements are reduced, but the fluid pressure maintenance deteriorates due to leakage
Solution Approach 1:
The patent separates the connection function and sealing function into distinct threaded joints. The first threaded joint (screw and holder) ensures structural connection, while the second threaded joint (cover and chamber) provides reliable sealing. This segmentation prevents fluid leakage and maintains pressure, as each joint can be independently designed and tightened without interfering with the other's function.
3Device complexity
If the cover is tightened using the same threaded joint as the screw, then the device complexity is reduced, but the sealing effectiveness deteriorates due to interference with screw tightening
Solution Approach 1:
The patent implements two independent threaded joints: the first threaded joint for the screw-holder connection and the second threaded joint for the cover-chamber sealing. This allows the cover to be tightly sealed against the ring surface without interfering with the screw tightening, ensuring both structural integrity and sealing effectiveness through separate, optimized tightening processes.
Data Source
AI summary
A milling tool is disclosed having a front head and a rear holder, which are detachably connected by means of a male/female coupling as well as a screw and a washer. Via a main duct, cooling liquid is fed to a chamber, from which it is fed out via branch ducts to individual milling inserts. The front chamber is closed by means of a cover that is held applied against a ring surface surrounding the chamber. The cover is tightenable by means of a threaded joint that is operative independently of a threaded joint between the screw and a front section of the main duct.