Spring Clip Hammer for Continuous Cast Core Removal
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Solution Overview
Problem
Existing devices for removing sand cores from cast bodies decouple the oscillating movement of the clamping device from the hammering process, leading to significant delays and complicating the decoring process.
Innovation Solution
A hammer with a shank designed as a spring clip, allowing the hammering movement to be synchronized with the oscillating movement of the clamping device, coupled through a resilient integration, enabling continuous operation without stopping the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the oscillating movement of the clamping device is decoupled from the hammering process by means of the pneumatic hammer, then the hammering process can be performed independently, but the oscillating process has to be stopped for the hammering of the workpiece, leading to significant delays and greatly complicating the decoring process
Solution Approach 1:
The patent combines the oscillating movement of the clamping device with the hammering process by integrating a hammer that can be excited by the oscillations. The hammer is resiliently mounted on the clamping device, allowing it to be struck by the oscillating clamping device and transfer the motion to the workpiece. This merging eliminates the need to stop the oscillating process for hammering, thereby maintaining continuous operation and improving decoring speed while keeping the operation simple.
2Ease of manufacture
If the oscillating movement of the clamping device is decoupled from the hammering process, then the hammering can be performed with a pneumatic hammer, but this leads to significant delays in decoring castings and greatly complicates the decoring process
Solution Approach 1:
The patent merges the oscillating clamping device with the hammering function by providing a hammer that is resiliently mounted on the clamping device. The hammer is positioned to strike the workpiece during the oscillating motion, combining two functions into one integrated system. This reduces device complexity compared to using a separate pneumatic hammer and eliminates the need for complex coordination between separate oscillating and hammering systems.
3Productivity
If a hammer with a shank designed as a spring clip is used, then the hammering movements can be easily coupled with the oscillating movements of the clamping device and brought into resonance, but requires careful design of the spring clip for optimal vibration behavior
Solution Approach 1:
The patent employs a spring clip with specific geometric parameters (S-shape, thickness, length) that are optimized to achieve resonance between the oscillating clamping device and the hammer. The spring clip's dimensions and material properties are selected to tune the natural frequency of the hammer to match the oscillation frequency of the clamping device, maximizing the coupling efficiency and decoring speed while maintaining manufacturability through standard spring design principles.
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 synchronization enhances the decoring speed and simplifies the process by maintaining continuous operation, improving resilience and elasticity, and allowing for easy assembly and maintenance.
Implementation Method 1
the spring clip is made of metal as a bending spring
Implementation Method 2
the hammering movement can be brought into resonance with the oscillating movement of the clamping device
Data Source
Figure 1~2
Figure 3~4
AI summary
A hammer (1) having a shank (2) and a hammer head (3) for a device (22) for removing the cores from cast bodies, the shank (2) of the hammer (1) being a spring buckle and the hammer head (3) being arranged on a free end section (4) of the spring buckle.