Anvil Drive Head With Friction Ring And Relief Grooves
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Solution Overview
Problem
Existing anvil designs for power tools often fail to securely engage sockets due to misalignment and uneven load distribution, leading to potential socket splitting under axial impact loads.
Innovation Solution
The anvil design features a disk-shaped drive end with lateral flats for pre-alignment and a channel for a friction ring, combined with a cone-shaped transition portion and relief grooves on the male square portion, which facilitates secure engagement with sockets and distributes load effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional anvil design is used, then the structure is simple, but the socket engagement is insecure and misalignment occurs leading to socket splitting
Solution Approach 1:
The anvil is divided into distinct functional segments: a drive end with flats for pre-alignment, a channel for a friction ring, and a male square portion with relief grooves. This segmentation allows each part to perform its specific function optimally, improving socket engagement security without requiring overall system complexity
Solution Approach 2:
The drive end includes pre-alignment flats that engage with the socket before the main driving force is applied. This preliminary alignment action ensures the socket is properly positioned and prevents misalignment-induced splitting during subsequent impact operations
2Force
If axial impact loads are applied, then the driving force is sufficient, but uneven load distribution causes socket splitting
Solution Approach 1:
Relief grooves are strategically positioned on the male square portion to create local stress relief zones. These grooves concentrate flexibility where needed, allowing the anvil to accommodate impact forces without transmitting uneven stresses to the socket, thereby preventing splitting while maintaining sufficient driving force
Solution Approach 2:
The friction ring positioned in the channel provides beforehand cushioning by creating friction-based load distribution. This friction engagement helps distribute axial impact loads more evenly across the socket-anvil interface before the full impact force is transmitted, reducing the risk of socket splitting
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 ensures precise alignment and stress relief, preventing socket splitting and enhancing the durability of both the anvil and socket during axial impact operations.
Implementation Method 1
A channel is defined between the drive end and the drive body for receiving a friction ring, which may be in the form of an o-ring, split ring or the like, which also facilitates engagement between the anvil and socket
Data Source
AI summary
The present disclosure relates to an anvil, an anvil and socket combination and an anvil attached to a power tool. The anvil structure includes a drive head with an end and a body portion having a channel spaced there between. A friction ring is retained in the channel. Flats are provided on the end and on the sides of the end and the square portion in a coordinating alignment such that the flats generally lie in the same plane. The ring retained in the channel between the end and the portion at least partially extends relative to the flap. A transition cone is provided on the anvil for distributing impact load. Additional, relief grooves are provided on corners of the polygon portion to help further relieve stress in the anvil structure.