Composite Static Rotary Table With Auxiliary Levitation Support
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Solution Overview
Problem
Ensuring stable non-contact rotation and improving the bearing capacity of ultra-precise rotary tables in machine tools, as direct contact between the rotary body and base due to pressure or air supply failures leads to frictional damage and reduced precision.
Innovation Solution
A composite static rotary table design featuring an air stopping film and an auxiliary supporting assembly, where the air stopping film maintains non-contact rotation and the auxiliary assembly provides levitation force when air pressure is reduced, enhancing bearing capacity and preventing direct contact between the rotary table body and base.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an air stopping film is used to maintain non-contact rotation, then rotation precision is improved, but bearing capacity deteriorates when air pressure is reduced
Solution Approach 1:
The patent introduces an auxiliary supporting assembly that provides preliminary support force before the air stopping film fails completely. When air pressure is reduced or the film is damaged, this auxiliary assembly immediately takes over to prevent direct contact between the rotary table body and base, thus cushioning the transition and maintaining bearing capacity while preserving rotation precision.
Solution Approach 2:
The auxiliary supporting assembly acts as an intermediary between the air stopping film and the direct contact interface. It provides a transitional support mechanism that bridges the gap when the primary air bearing system is compromised, ensuring continuous non-contact or minimal-contact operation and maintaining both precision and reliability.
2Force
If the rotary table body bears excessive pressure, then bearing capacity is improved, but direct contact with the base occurs causing frictional damage
Solution Approach 1:
The auxiliary supporting assembly provides beforehand cushioning by being pre-positioned to engage when excessive pressure causes the air stopping film to fail. It prevents the rotary table body from making direct contact with the base under excessive load, thus cushioning against frictional damage while maintaining bearing capacity.
Solution Approach 2:
The auxiliary supporting assembly implements preliminary anti-action by being designed to counteract the harmful effect of direct contact before it occurs. When pressure exceeds the air bearing's capacity, the auxiliary assembly activates to oppose the downward force, preventing frictional damage to the contact surfaces.
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 ensures high rotation precision and increased bearing capacity by maintaining non-contact rotation and providing auxiliary levitation support, preventing damage and improving operational reliability.
Implementation Method 1
an air stopping film arranged between the rotary table body and the base
Implementation Method 2
an auxiliary supporting assembly fixedly arranged in the mounting space and configured for assisting the rotary table body to be levitated relative to the base
Data Source
AI summary
The present invention provides a composite static rotary table and a method for protecting a composite static rotary table. The composite static rotary table comprises: a housing body provided with a mounting space; a rotary table body driven by a connecting mandrel to rotate; a base, the connecting mandrel being arranged through the base; an air stopping film arranged between the rotary table body and the base; and an auxiliary supporting assembly fixedly arranged in the mounting space and configured for assisting the rotary table body to be levitated relative to the base. The present invention is intended to solve the problem of ensuring the stable non-contact rotation of the rotary body of the rotary table relative to the base, while improving the bearing capacity of the rotary table.