Impact Hammer Position Sensing for Precise Anvil Timing
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Solution Overview
Problem
Existing power tools lack precise control over the impact mechanism components, leading to inefficiencies, increased vibrations, and reduced durability due to imprecise timing of hammer and anvil impacts.
Innovation Solution
Incorporating sensors to detect the rotational and axial positions of hammer components within a power tool, allowing a controller to optimize the impact timing and energy transfer by adjusting motor operation based on sensor feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are added to detect hammer position, then impact timing precision is improved, but device complexity increases
Solution Approach 1:
The patent implements feedback control by using sensors to detect the real-time position of the hammer and anvil components, then feeding this information back to the control system to optimize impact timing. The controller adjusts motor operation based on sensor feedback signals, creating a closed-loop control system that precisely times the impact between hammer and anvil to maximize energy transfer.
2Productivity
If impact timing is optimized, then energy transfer efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The patent employs dynamic control of the impact mechanism by continuously monitoring component positions and adjusting impact timing in real-time. The system dynamically optimizes the moment of impact between hammer and anvil based on actual operational conditions, allowing the mechanism to adapt its timing rather than relying on fixed mechanical timing, thereby maximizing energy transfer efficiency.
3Reliability
If sensor feedback control is implemented, then component durability is improved, but cost increases
Solution Approach 1:
The patent applies preliminary action by using sensor feedback to detect the positions of hammer and anvil components before impact occurs. The control system uses this advance information to optimize impact timing and ensure proper alignment, preventing premature or misaligned impacts that could damage components. This proactive control approach extends component durability by avoiding harmful impact conditions.
Data Source
AI summary
Position sensing related to a component within a power tool. The component within the power tool is, for example, a hammer of an impact mechanism and can include one or more sensible features that allow a controller of the power tool to precisely determine the position, speed, and acceleration of the component. One or more sensors can be used to determine the rotational position of the hammer and the axial position of the hammer. The rotational position of the hammer can then be used to calculate, for example, rotational speed and acceleration of the hammer. With precise determinations of the rotational and axial position of the hammer, the controller of the power tool is able to precisely time the impact between the hammer and the anvil to optimize the impact between the hammer and the anvil (e.g., to maximize energy transfer between the hammer and the anvil).