Switchable Vibration Modal Ultrasonic Device
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Solution Overview
Problem
Existing ultrasonic devices are limited in their ability to switch between different vibration modes without changing components, which restricts their versatility and motion control capabilities, particularly in machining applications.
Innovation Solution
A switchable vibration modal ultrasonic device is designed with a combination of magnetostrictive materials and a drive coil configuration that allows for the switching between longitudinal, torsional, and combined longitudinal-torsional vibration modes without altering the device components, utilizing a hollow shaft, ultrasonic motor, and a limiting shell with a strip spring threaded slider and electromagnet to control the tool head's motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed vibration mode ultrasonic device is used, then the device structure is simple, but the device cannot switch between different vibration modes which limits versatility
Solution Approach 1:
The ultrasonic device is designed with multiple drive coils (first drive coil and second drive coil) that can be independently controlled to generate different vibration modes. The same device structure can produce longitudinal vibration, torsional vibration, or compound vibration by adjusting which coils are activated, making the device universal and adaptable to different machining requirements without physical reconfiguration
Solution Approach 2:
The device employs dynamic control of vibration modes through independent activation of different drive coils. The first drive coil generates longitudinal vibration when activated alone, the second drive coil generates torsional vibration when activated alone, and both coils working together produce compound longitudinal-torsional vibration. This dynamic switching capability allows the device to adapt its vibration characteristics in real-time without changing its physical structure
2Adaptability or versatility
If multiple vibration modes are achieved by changing components, then different vibration forms can be obtained, but the operation becomes complex and time-consuming
Solution Approach 1:
The device enables rapid vibration mode switching through dynamic control of electromagnetic coils rather than physical component changes. By simply adjusting which drive coils are energized and at what power levels, the operator can switch between longitudinal, torsional, and compound vibration modes instantly, greatly improving operational convenience and speed
Solution Approach 2:
The device changes vibration mode by adjusting electrical parameters (which coils are activated and their power levels) rather than mechanical parameters (physical components). This parameter-based control allows for quick, easy switching between different vibration forms by simply changing the electrical input configuration, maintaining versatility while simplifying operation
3Adaptability or versatility
If a single vibration mode transducer is used, then the device structure is simple, but the machining requirements for different vibration forms cannot be met
Solution Approach 1:
The ultrasonic device is designed as a multi-functional transducer that can perform longitudinal vibration machining, torsional vibration machining, and compound vibration machining using the same physical structure. This universality eliminates the need for multiple specialized transducers, thereby improving productivity by reducing tool changes and setup time while meeting diverse machining requirements
Solution Approach 2:
The device dynamically adapts its vibration characteristics to match different machining requirements through independent control of multiple drive coils. Whether longitudinal vibration is needed for certain materials, torsional vibration for others, or compound vibration for complex geometries, the device can switch modes on-demand, maintaining high productivity across different machining applications
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
The device enables efficient and safe operation with increased processing efficiency and diversified machining modes, reducing processing costs and improving design optimization by allowing for convenient and fast switching between different vibration forms without changing parts.
Implementation Method 1
a vibration source, the vibration source comprises a drive coil, a bias magnet, magnetostrictive material and a vibration source shell; the magnetostrictive material is wound around the bias magnet in a coil shape
Implementation Method 2
the electromagnet is mounted on the inner wall of the shell. When the electromagnet is energized, thread on strip spring thread slider is connected to the casing thread on shell
Data Source
AI summary
A device and a method for switchable vibration modal ultrasonic are provided. The device includes a hollow shaft, an ultrasonic motor, a limit shell, an electromagnet, a moving tool head, a vibration source and a tool head. The structure design of the ultrasonic motor, the magnetostrictive materials and the drive coil combination of different functions are configured so that, without changing the condition of components, the ultrasonic can switch mode, namely the longitudinal vibration, torsional vibration, and longitudinal and torsional vibration in three different vibration modes. During the operation of the device, different vibration modes are excited without changing the parts, which meets the machining requirements of different vibration forms. Meanwhile, the operation is more convenient and faster, and the overall design structure of the device ensures the efficient and safe operation of the device.