Impact Rotary Tool Anvil and Output Shaft Bearing Support
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing impact rotary tools face challenges in enhancing the durability of components such as the anvil and output shaft, particularly under rotational impacting forces.
Innovation Solution
The impact rotary tool design incorporates a hammer, an anvil, an output shaft, a housing, and a bearing, with the anvil and output shaft featuring contact portions that interact with the bearing to enhance mechanical strength and durability. Additionally, a buffer member with an elastic member and an adjusting member is interposed between the anvil and output shaft to regulate the gap distance and reduce collision noise and vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the anvil and output shaft are designed to transmit rotational impacting forces, then the tool can perform impact operations, but the durability of these components decreases due to vibrations and collisions
Solution Approach 1:
A buffer member is introduced as an intermediary element between the anvil and output shaft. This buffer member absorbs and dampens the collision forces and vibrations generated during impact operations, protecting the anvil and output shaft from direct harmful effects while still allowing torque transmission.
Solution Approach 2:
The buffer member is positioned in advance between the anvil and output shaft to provide cushioning before collisions occur. This pre-positioned cushioning element mitigates the impact of rotational impacting forces before they can damage the anvil and output shaft, enhancing their durability.
2Reliability
If a buffer member is interposed between the anvil and output shaft to reduce vibrations, then durability increases, but the gap distance control becomes more complex
Solution Approach 1:
The buffer member's properties (such as elasticity, damping coefficient, or dimensions) are optimized to provide effective vibration reduction while maintaining an appropriate gap distance. By adjusting the parameters of the buffer member itself, the system achieves both durability improvement and gap control without adding complex regulation mechanisms.
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 configuration increases the durability of at least one of the anvil or the output shaft by enhancing mechanical strength against vibrations, while also reducing collision noise and vibrations, thereby improving the overall performance and longevity of the impact rotary tool.
Implementation Method 1
The elastic member 81 to be elastically deformed in a thrusting direction aligned with a rotational axis of the output shaft 7
Implementation Method 2
The bearing 91 is in contact with at least one of the first contact portion 63 or the second contact portion 72 and supports at least one of the output shaft 7 or the anvil 6 rotatably
Data Source
AI summary
An impact rotary tool includes a hammer, an anvil, an output shaft, a housing, and a bearing (first bearing). The bearing (first bearing) is held by the housing. The anvil includes a first contact portion. The output shaft includes a second contact portion. The second contact portion receives, from the first contact portion, force that causes the output shaft to rotate. The bearing (first bearing) is in contact with at least one of the first contact portion or the second contact portion and supports at least one of the output shaft or the anvil rotatably.