Vector Vibration Feeder Beam Layout for Pitch Motion Suppression
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Solution Overview
Problem
Existing vibration feeders generate inconsistent motion components in the vertical direction, leading to unstable parts conveying speed due to pitch motion around a horizontal axis.
Innovation Solution
A vector vibration feeder with an inner and outer vibration body connected by elastic beams, where the beams have higher stiffness in the radial direction, and excitation mechanisms provide forces along the central axis and rotation direction to suppress pitch motion, supported by damping materials at nodes of minimal amplitude.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a composite vibration type feeder uses different excitation mechanisms to control translation and rotation motion, then flexible control of motion inclination angle is achieved, but pitch motion around horizontal axis occurs causing inconsistent vertical motion components
Solution Approach 1:
The feeder is segmented into inner and outer vibration bodies that can independently vibrate, with elastic beams connecting them. This segmentation allows separate control of different vibration modes while maintaining overall system stability, resolving the contradiction between flexible motion control and vertical motion consistency.
Solution Approach 2:
The elastic beams are designed with asymmetric stiffness characteristics - higher stiffness in the radial direction and lower stiffness in the axial direction. This asymmetric design suppresses pitch motion around the horizontal axis while allowing controlled translation and rotation, thus maintaining consistent vertical motion components.
2Stability of the object's composition
If elastic beams with higher radial stiffness are used to connect inner and outer vibration bodies, then pitch motion is suppressed, but device complexity increases
Solution Approach 1:
The elastic beams' stiffness parameters are specifically designed to be higher in the radial direction and lower in the axial direction. By changing the stiffness parameters anisotropically, the patent suppresses pitch motion without adding complex mechanical structures, resolving the contradiction between stability and device complexity.
3Object-generated harmful factors
If support bodies are placed at nodes with minimal amplitude, then vibration transmission to ground is reduced, but manufacturing precision requirements increase
Solution Approach 1:
Support bodies are introduced as intermediary elements between the vibration system and the ground. These support bodies are strategically placed at nodal points where vibration amplitude is minimal, acting as mediators that reduce vibration transmission to the ground while the nodal position特性 provides tolerance for positioning variations.
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 solution enhances motion consistency and stability by suppressing radial and pitch motions, reducing vibration transmission to the ground, and maintaining stable conveying speed.
Implementation Method 1
A plurality of elastic beams are connected between the inner vibration body and the outer vibration body. Equivalent stiffness of each elastic beam in a first direction is greater than equivalent stiffness of the elastic beam in a direction perpendicular to the first direction.
Implementation Method 2
A first set of excitation mechanisms and a second set of excitation mechanisms that are configured to cause the inner vibration body and the outer vibration body to generate a relative translation motion along the central axis and a relative rotation motion around the central axis
Implementation Method 3
The support bodies are arranged at positions that are under the elastic beams and are close to a node with a smallest amplitude of a vibration mode corresponding to a target working state of the entire vector vibration feeder
Data Source
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AI summary
A vector vibration feeder is provided, including: an inner vibration body and an outer vibration body. A plurality of elastic beams are connected between the inner vibration body and the outer vibration body. The plurality of elastic beams are radially distributed around a central axis of the inner vibration body. The plurality of elastic beams are distributed in a spacing manner in a direction of the central axis. The elastic beams are configured to: allow the inner vibration body and the outer vibration body to do a relative translation motion along the central axis and a relative rotation motion around the central axis, and jointly suppress a relative radial motion or pitch motion between the inner vibration body and the outer vibration body. The relative radial motion or pitch motion of the inner vibration body and the outer vibration body can be suppressed, thus improving stability of parts conveying.