Hammering Device Wobble Ring Beating Mechanism
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Solution Overview
Problem
Existing hammering devices have low productivity, leading to a preference for alternative methods like shot peening or deep rolling.
Innovation Solution
A hammering device with a beating mechanism comprising multiple beaters driven by a single rotary drive, utilizing a wobble ring to transform rotational movement into translational movement, allowing for higher beating frequencies and adjustable impact intensity through a wobble angle adjustment system, along with sensors and control systems for precise impact energy control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single beater is used in the hammering device, then the device structure remains simple, but the productivity is low due to limited beating frequency
Solution Approach 1:
The beating mechanism is segmented into multiple independent beaters (first beater, second beater, and optionally third beater) that can operate simultaneously or alternately. Each beater is equipped with its own striking pin and sleeve assembly, allowing independent operation. This segmentation enables higher overall beating frequency while keeping each individual beater structure relatively simple.
Solution Approach 2:
Multiple beaters are merged into a single integrated beating mechanism driven by one rotary drive unit. The wobble ring converts the single rotary motion into coordinated reciprocating motion for all beaters. This merging approach achieves high productivity through multiple beaters while avoiding the complexity of multiple independent drive systems.
2Productivity
If multiple beaters are added to increase beating frequency, then productivity improves, but the device structure becomes more complex
Solution Approach 1:
The rotary drive unit with wobble ring serves as a universal driving mechanism for all beaters. The same basic structure (striking pin, sleeve, spring assembly) is reused for each beater, reducing overall complexity despite having multiple beaters. The wobble ring design allows one drive shaft to control multiple beaters simultaneously.
Solution Approach 2:
The beaters operate in periodic reciprocating motion controlled by the wobble ring. The rotary drive continuously rotates while the wobble ring converts this into periodic back-and-forth motion for each beater. This allows consistent, high-frequency beating action without requiring complex control mechanisms for each individual beater cycle.
3Manufacturing precision
If impact intensity is increased to improve subsurface deformation, then the effectiveness of hammering improves, but the risk of damaging the workpiece or tool increases
Solution Approach 1:
The impact intensity is made dynamically adjustable through the wobble angle adjustment device. The wobble ring's angle relative to the drive shaft can be changed during operation, which directly controls the strike force of each beater. This dynamic adjustment capability allows optimization of impact intensity for different workpiece materials and conditions without permanent modification to the mechanism.
Solution Approach 2:
The system controls impact parameters by changing the wobble angle and beating frequency. By adjusting these parameters, the impact energy can be precisely controlled to achieve the desired subsurface deformation level without exceeding the damage threshold. The spring-loaded striking pins also provide automatic parameter adjustment based on resistance feedback.
4Manufacturing precision
If a wobble angle adjustment device is added to control impact intensity, then manufacturing precision improves, but device complexity increases
Solution Approach 1:
The wobble ring functions as a counterbalancing mechanism that converts simple rotary motion into controlled oscillating motion. The geometric design of the wobble ring inherently provides the angle adjustment function without requiring additional heavy actuators or complex mechanisms. The spring assemblies also serve as counterbalancing elements that help control the striking motion.
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
Significantly increases productivity by achieving higher beating frequencies and consistent impact intensity, enabling efficient deformation of workpiece subsurfaces while accommodating varying surface conditions.
Implementation Method 1
The beating mechanism has a drive shaft that extends along a drive axis and a wobble ring for transforming a rotational movement of the drive shaft into a translational movement
Implementation Method 2
the striking pin to be fixed to a holding element by means of a spring, the holding element being periodically moved to and fro during operation
Implementation Method 3
the beater comprises a striking pin that runs inside a sleeve and is sealed against it. The drive power of the drive moves the sleeve and this transfers the kinetic energy to the striking pin
Implementation Method 4
Hammering devices are used to beat the surface of workpieces, thereby causing a change in their subsurface. This leads to the formation of compressive residual stresses near the surface
Data Source
AI summary
The invention relates to a hammering device for influencing the subsurfaces of workpieces comprising a beating tool for acting on the workpiece, a beating mechanism which has a first beater for producing a beating pulse on the beating tool, and a drive for driving the beating mechanism, wherein the beating mechanism has at least a second beater for producing a beating pulse on the beating tool. According to the invention, it is intended for the beating mechanism to comprise a drive shaft that extends along a drive axis and a wobble ring for transforming a rotational movement of the drive shaft into a translational movement, and the first beater and the second beater to be driven by the wobble ring.