Hand-Held Hammer Impact Force Diversion for Stuck Tool Release
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Solution Overview
Problem
Conventional hammer devices, such as compressed air hammers, are limited to axial impacts, leading to tool jamming issues, requiring laborious and costly techniques to free stuck tools, which disrupt processing and cause wear on the device.
Innovation Solution
A hammer device with an impact mechanism that can redirect axial impact forces to counter-axial directions, using an impact force diversion element to store and release energy, allowing for both prying and pulling impacts, thereby freeing stuck tools without additional aids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional pneumatic hammers deliver axial impact forces, then high impact energy can be transferred to the tool, but the tool becomes jammed in the workpiece and cannot be freed easily
Solution Approach 1:
The patent applies reverse action by delivering a counter-axial impact force to the tool after axial impact. The striking mechanism strikes the tool in the axial direction first, then strikes it again in the opposite (counter-axial) direction to free the jammed tool from the workpiece
Solution Approach 2:
The patent uses periodic alternating impacts between axial and counter-axial directions. The striking mechanism alternates between striking the tool in the axial direction (to drive it into the workpiece) and counter-axial direction (to free it from jamming), creating a periodic action that prevents continuous jamming
2Force
If the pneumatic hammer operates under pressure to intensify impact force, then impact energy increases, but the jamming effect intensifies and the tool remains stuck
Solution Approach 1:
The patent applies preliminary counter-action by delivering a counter-axial impact force to the tool before or during the axial impact. This preliminary anti-action prevents the tool from becoming jammed by creating a releasing force that counteracts the clamping effect of the workpiece on the tool
3Productivity
If the striking mechanism strikes the tool continuously in axial direction, then processing can proceed, but the piston delivers undamped impacts against its own cylinder causing self-damage
Solution Approach 1:
The patent applies reverse action by having the striking mechanism strike the tool in counter-axial direction instead of continuously in axial direction. This alternating strike pattern allows the tool to be freed from jamming and prevents the piston from delivering undamped impacts against the cylinder, thereby reducing self-damage while maintaining continuous processing capability
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
Enables efficient release of stuck tools, reduces processing interruptions, and minimizes wear on the hammer device, allowing for continuous operation with improved tool handling and reduced operational costs.
Implementation Method 1
at least one impact force storage element (18) configured to absorb an impact force of the striking mechanism (13) at least partially in an axial direction (A) along the longitudinal axis (X) and to release at least part of it as impact force in a counter-axial direction (B) along the longitudinal axis (X)
Data Source
Figure 1~2
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Figure 5~6
AI summary
The present invention relates to a hammer device (1), preferably a hand-held hammer device (1), with a striking mechanism (13) which is designed to act in an axial direction (A) along the longitudinal axis (X) on a tool (2), preferably on a chisel (2), and at least one impact force storage element (18) which is designed to at least partially store an impact force (D) of the striking mechanism (13) in the axial direction (A) along the longitudinal axis (X) and to release at least partially as an impact force (D') of the striking mechanism (13) in an anti-axial direction (B) along the longitudinal axis (X).The hammer device (1) is characterized by an impact force diversion element (15) which is designed and arranged in the force flow between the impact mechanism (13) and the impact force storage element (18) in such a way that the impact force (D) of the impact mechanism (13) can be transferred in axial direction (A) along the longitudinal axis (X) at least partially, preferably completely, bypassing the tool (2) and stored at least partially in the impact force storage element (18).