Guide Slide Oil Pocket Circulation to Prevent Lubricant Leakage
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Solution Overview
Problem
Existing moving body guiding devices in machine tools experience lubricating oil leakage when the load on the moving body increases, despite efforts to prevent it.
Innovation Solution
A moving body guiding device with a lubricating oil pocket surrounded by a land portion, featuring a closed-loop oil groove and a lubricating oil return passage that connects the front and rear portions, along with a lubricating oil supply passage to maintain consistent lubrication and prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lubricating oil pocket with a return line is provided to enable oil circulation, then local pressure increases are prevented and oil leakage is reduced under normal loads, but oil leakage cannot be prevented when the load on the moving body is increased
Solution Approach 1:
The lubricating oil pocket is segmented into multiple regions by forming a plurality of recesses in the sliding surface within the oil pocket. This segmentation creates multiple oil storage zones that work together to maintain consistent oil pressure and prevent leakage under varying load conditions.
Solution Approach 2:
A closed-loop oil groove is formed along the inside of the land portion, and a lubricating oil supply passage is provided that supplies oil through the return passage. This preliminary arrangement ensures that oil is continuously supplied to the pocket before pressure buildup can occur, preventing leakage in advance.
2Productivity
If the load on the moving body is increased to handle heavier machining tasks, then productivity is improved, but lubricating oil leakage increases
Solution Approach 1:
The closed-loop oil groove and supply passage through the return line create a feedback mechanism where oil circulation is continuously monitored and adjusted. The system automatically maintains proper oil pressure and flow by circulating oil through the return passage, adapting to varying load conditions without external intervention.
Solution Approach 2:
The lubricating oil supply passage is configured to continuously supply oil to the lubricating oil pocket through the return passage, ensuring uninterrupted lubrication even as loads vary during machining operations. This continuous action prevents leakage regardless of load changes.
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 effectively prevents lubricating oil leakage by ensuring continuous circulation and controlled pressure within the lubricating oil pocket, maintaining consistent lubrication and reducing sliding resistance, even under varying loads, thus enhancing machining accuracy and reducing wear.
Implementation Method 1
a lubricating oil return passage which is at least partially open in the oil groove of the lubricating oil pocket and which connects a front portion and a rear portion of the lubricating oil pocket so that the lubricating oil accumulated in the rear portion in the movement direction flows toward the front portion in the movement direction
Implementation Method 2
a lubricating oil supply passage which is in communication with the lubricating oil return passage and which supplies the lubricating oil pocket with the lubricating oil supplied from a lubricating oil source through the lubricating oil return passage
Implementation Method 3
a closed-loop oil groove being formed along the inside of the land portion
Data Source
AI summary
In a moving body guiding device which supplies lubricating oil between a guiding surface of a supporting body and a sliding surface of the moving body and guides a moving body, a lubricating oil pocket having a periphery enclosed by a land portion is provided on the sliding surface of the moving body, a closed loop oil groove is formed along the inside of the land portion, a front portion and a rear portion inside the lubricating oil pocket communicate with one another by means of a lubricating oil pocket return passage at least partially opening in the oil groove, and lubricating oil that has accumulated in the rear portion, in a movement direction, concomitant with movement of the moving body, flows to the front portion in the movement direction.