Ball Spline Deflecting Device Lubrication Segmentation
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Solution Overview
Problem
Conventional lubricating mechanisms for ball spline devices fail to uniformly and effectively supply lubricant to all portions of the endless ball guiding passages, leading to potential leakage and inadequate lubrication of ball bearing members.
Innovation Solution
The design incorporates an elongated guide rail with longitudinal channels, a sliding member with radial swellings and recesses, a cylindrical member with curved guiding pathways, and a deflecting device, which together form endless ball guiding passages and allow for the uniform distribution of lubricant through strategically placed slots and passageways.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lubricant is supplied at higher pressure into the endless ball guiding raceway, then the lubrication effectiveness is improved, but the lubricant flows out through the gaps between parts causing leakage
Solution Approach 1:
The lubrication system is segmented into multiple independent lubricant supply channels, each serving specific regions of the ball guiding raceway. This segmentation allows controlled pressure distribution and prevents uncontrolled leakage while maintaining effective lubrication in each zone.
Solution Approach 2:
Lubricant retaining structures act as intermediaries between the lubricant supply and the ball guiding raceway. These structures control the release of lubricant, maintaining effective pressure for lubrication while preventing excessive flow that would cause leakage through gaps.
2Device complexity
If conventional lubricating mechanisms are used, then the structure is simple, but the lubricant is not uniformly supplied to various portions of the ball screw devices
Solution Approach 1:
The lubrication system is divided into multiple independent supply channels, each targeting specific regions of the ball guiding raceway. This segmentation enables uniform distribution of lubricant across all portions of the device while maintaining a relatively simple overall structure.
Solution Approach 2:
Different regions of the ball guiding raceway are provided with dedicated lubricant supply channels, allowing each local area to receive appropriate lubrication. This ensures uniform lubrication across the entire device without requiring complex centralized systems.
3Productivity
If the slider and screw move at fast speed, then the productivity is improved, but the lubricant cannot be effectively retained and distributed in the ball bearing members
Solution Approach 1:
Lubricant is supplied in advance to the ball bearing members through dedicated supply channels before the balls enter the high-speed sliding zone. This preliminary lubrication ensures that even at fast speeds, the bearing members are adequately lubricated and the lubricant is effectively retained.
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 configuration ensures suitable and uniform lubrication of ball bearing members by allowing lubricant to be effectively supplied to all areas of the ball spline device, reducing leakage and enhancing the sliding performance of the ball bearing members.
Implementation Method 1
the lubricant or lubricating oil or fluid is normally required to be filled or supplied into the endless ball guiding raceway with a greater or higher pressure
Implementation Method 2
for suitably lubricating the ball bearing members of the ball spline device
Data Source
AI summary
A ball spline device includes a guide rail engaged into a sliding member and having a number of longitudinal channels and recesses aligned with each other for engaging with ball bearing members, a cylindrical member and a deflecting device are engaged between the sliding member and the guide rail, and the cylindrical member and the deflecting device each include a number of curved guiding pathway communicating with each other for forming a number of endless ball guiding passages in the ball spline device and for engaging with ball bearing members, and the cylindrical member includes a number of protrusions each having a slot for receiving a lubricating fluid to lubricate the ball bearing members.