Working Machine Drive Device Asymmetry Vibration Suppression
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Solution Overview
Problem
Conventional machining centers experience vibration issues during acceleration and deceleration due to the significant distance between the drive devices and the center of gravity of movable components, leading to inefficient movement and positioning.
Innovation Solution
The working machine is designed with drive devices arranged at different levels on either side of the movable components, ensuring the center of gravity aligns with or is close to the drive source center, thereby reducing vibration by optimizing the placement of left/right and up/down drive devices on the left/right and forward/backward saddles and sliders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drive devices are arranged on each side of the movable body to drive at the center of gravity, then vibration is suppressed during acceleration and deceleration, but the drive devices must be positioned at different levels which increases device complexity
Solution Approach 1:
The patent applies asymmetry by arranging the left/right drive devices at different vertical levels rather than symmetrically at the same level. The forward side drive device is positioned at a higher location than the backward side drive device, creating an asymmetric configuration that enables the drive source center to coincide with the center of gravity of the movable body, thereby suppressing vibration during acceleration and deceleration.
Solution Approach 2:
The patent transitions from a two-dimensional symmetric arrangement (left/right at same level) to a three-dimensional asymmetric arrangement by introducing vertical level differences. The drive devices are positioned at different heights in the vertical dimension, allowing the drive source center to be precisely located at the center of gravity position, which requires spatial coordination in three dimensions rather than just horizontal positioning.
2Device complexity
If drive devices are arranged far from the center of gravity for structural simplicity, then device complexity is reduced, but vibration occurs during acceleration and deceleration
Solution Approach 1:
The patent resolves this contradiction by implementing asymmetric positioning of drive devices at different vertical levels. This asymmetric arrangement allows the drive source center to be located at the center of gravity, suppressing vibration, while maintaining reasonable structural complexity through systematic design of the asymmetric configuration.
Solution Approach 2:
The patent changes the positional parameters of the drive devices by introducing vertical level differences. By adjusting the vertical positions (heights) of the drive devices on the forward and backward sides, the drive source center is precisely controlled to coincide with the center of gravity, thereby suppressing vibration while maintaining structural feasibility.
Data Source
AI summary
In a working machine, left and right side walls are erected on a bed, a forward/backward saddle is movable in forward/backward directions, left and right sides of the forward/backward saddle are movably supported with the left and right side walls, a forward/backward drive device is arranged on the left and right side walls, to move the forward/backward saddle in the forward/backward directions, a left/right saddle is arranged on the forward/backward saddle and movable in left/right directions, a left/right drive device is arranged on the forward/backward saddle on each of forward/backward sides of the left/right saddle, to move the left/right saddle in the left/right directions, an up/down slider is movable up and down and arranged on the left/right saddle, a lower portion of the up/down slider is provided with a processing head to which a processing tool for processing a work set on the bed is removably and replaceably attached.