Gear Milling Cutter Insert Holder Axial Screw Access
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Solution Overview
Problem
Existing gear milling tools face difficulties in accessing and replacing individual milling inserts without dismounting the holder, leading to inefficient machining due to the screws being parallel and near the front side of the head, making it hard to use traditional T-wrenches and resulting in time-consuming measurement and adjustment operations.
Innovation Solution
The insert holder's seat is positioned between tangentially spaced shoulders, allowing the screw to be accessed easily with a T-wrench, and the milling insert is secured between a tangential support and a wedge with a through hole, enabling convenient mounting and dismounting of inserts while absorbing tangential cutting forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the screw is oriented parallel to and placed near the front side of the head of the milling cutter, then the milling insert can be fixed in the holder, but the accessibility to the key grip of the screw becomes significantly more difficult
Solution Approach 1:
The screw is repositioned from a radial orientation (parallel to front side) to an axial orientation (perpendicular to front side), changing the dimensional approach for accessibility. The key grip now extends axially from the front side of the head, allowing access from the front rather than radially from the side, thus resolving the accessibility issue while maintaining secure fixation
2Ease of operation
If the screw is repositioned to improve accessibility, then the ease of operation improves, but the fixation reliability may be compromised
Solution Approach 1:
A wedge-shaped component is introduced as an intermediary between the screw and the milling insert. The wedge converts the axial force from the screw into radial clamping force that secures the milling insert against the holder, thus maintaining reliable fixation while allowing the screw to be accessed from the front side
3Device complexity
If traditional T-wrenches are used for screw access, then the tool construction is simple, but the replacement of milling inserts becomes time-consuming
Solution Approach 1:
The screw access is changed from radial (requiring side access with T-wrench) to axial (allowing front access with simple hex keys or Allen wrenches), significantly reducing the time required for insert replacement while maintaining tool construction simplicity
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 design allows for easy access and reliable fixation of milling inserts, reducing material consumption, enhancing strength, and minimizing the risk of dislodgment, while maintaining dimensional accuracy and simplifying the replacement process.
Implementation Method 1
one of which is facing the milling insert and the other the second shoulder... absorbing tangential cutting forces
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The invention relates to a tool that is intended for cyclo-palloid gear hobbing and includes a head (1) and a plurality of milling inserts (2) protruding from a front side (4) of the same. The milling inserts are mounted - suitably two by two - in chip removal units (3) that are detachably connected to the head. The individual milling insert (2) is clamped by means of a wedge (19) and a screw (20) easy to access, the wedge (19) acting tangentially against the milling insert behind which there is a robust tangential support in the form of a shoulder (56). By said wedge clamping of the milling insert, there is gained that the milling inserts can be mounted and dismounted in a simple way, as well as that each group of wedge+milling insert+tangential support can be located tangentially and thereby efficiently carry the cutting forces acting on the milling insert. In further aspects, the invention relates in addition to an insert holder as such intended for the tool, a chip removal unit in the form of an insert holder equipped with a milling insert, as well as an insert kit.