Impact Rotary Tool Anvil Fitting for Radial Vibration Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing impact rotary tools produce vibrations in the radial direction when fastening members like screws are tightened due to misalignment of the rotational axes, which is not tolerated by the tool's design.
Innovation Solution
The impact rotary tool incorporates a fitting portion with a tolerating mechanism that allows for misalignment between the first and second rotational axes, implemented through convex curved surface parts on the surfaces of the first and second members, enabling alignment with the fastening member's direction and reducing radial vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the tip tool attaching member and the rotational impact transmitting member are rigidly coupled with aligned rotational axes, then the structural stability is improved, but misalignment of the rotational axis with the fastening member direction causes radial vibrations
Solution Approach 1:
The anvil is divided into two separate members: the tip tool attaching member (first member) and the rotational impact transmitting member (second member). These members are fitted together through a fitting portion that allows relative movement, enabling the system to accommodate misalignment while maintaining structural integrity. The segmentation allows each member to perform its specific function independently while working together to eliminate radial vibrations.
Solution Approach 2:
The fitting portion between the first and second members is designed to tolerate misalignment of the rotational axes, allowing dynamic adjustment rather than rigid fixation. This dynamic capability enables the anvil to adapt to misalignment between the rotational axis and the fastening member direction, thereby preventing radial vibrations while maintaining structural stability during operation.
2Ease of operation
If the rotational axis of the second member is misaligned with the fastening member inserting direction, then the ease of operation is improved, but the first rotational axis becomes misaligned causing radial vibrations
Solution Approach 1:
The fitting portion provides dynamic tolerance for misalignment between the first and second members' rotational axes. This allows the second member's rotational axis to be misaligned with the fastening member inserting direction for ease of operation, while the fitting mechanism compensates for this misalignment to prevent radial vibrations.
Solution Approach 2:
The fitting portion acts as an intermediary mechanism between the first and second members. It mediates the misalignment issue by allowing relative movement and adjustment, enabling the second member to operate at an angle while the first member maintains proper alignment with the fastening member, thus preventing radial vibrations.
Data Source
AI summary
An impact rotary tool includes a hammer and an anvil that transmits rotational impact force from the hammer to a tip tool. The anvil includes a first member and a second member. The first member holds the tip tool thereon. The first member is fitted into the second member. The rotational impact force is applied to the second member. The first member and the second member are arranged to be fitted into each other in a fitting portion. The fitting portion has a tolerating mechanism. The tolerating mechanism tolerates misalignment of a first rotational axis with a second rotational axis. The first rotational axis is a rotational axis of the first member. The second rotational axis is a rotational axis of the second member.