Rotary Table Leak Drainage for Bearing Protection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing rotary table technologies with leak detection systems often damage bearing assemblies when coolant leaks, affecting the operation of key components like the rotor.

Innovation Solution

A rotary table design featuring a housing with grooves and a drainage channel, a leak detection belt, and a rotary seal member that guides liquid to the belt for detection, preventing damage to key components by triggering a signal to shut down the system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the sensor is set between the bearing assembly and the backup sealing system to detect coolant leakage, then the leakage detection function is achieved, but the bearing assembly is damaged by infiltrated liquid before detection can occur

Engineering Contradiction:

Improveleakage detection functionVSAvoiddamage to bearing assembly by liquid infiltration

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by providing a guide portion on the shaft that redirects liquid away from the bearing assembly before the liquid can reach the sensor. This preventive measure ensures that even if leakage occurs, the bearing assembly is protected from damage, allowing the sensor to detect the leakage without compromising critical components.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the sensor is positioned to detect liquid leakage, then leakage detection is enabled, but the sensor itself may be damaged by direct contact with infiltrated liquid

Engineering Contradiction:

Improveleakage detection capabilityVSAvoidsensor durability against liquid damage

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The patent uses the guide portion as an intermediary element that intercepts and redirects liquid flow. This mediator prevents direct contact between the infiltrated liquid and the sensor, allowing the sensor to perform its detection function without being exposed to harmful liquids that could damage it.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If the bearing assembly is positioned to support the shaft, then the shaft rotation is enabled, but the bearing assembly becomes vulnerable to liquid infiltration and damage

Engineering Contradiction:

Improveshaft rotation functionVSAvoidliquid infiltration damage to bearing assembly

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The guide portion is positioned to intercept liquid before it can reach the bearing assembly, providing preliminary protection. This allows the bearing assembly to continue supporting shaft rotation without being vulnerable to liquid infiltration, as the guide portion redirects liquid away from both the bearing and sensor areas.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12176798B2Rotary table with leakage detection function

Publication Date: 2024.12.24 HIWIN TECH CORP

AI summary

A rotary table includes a housing having a first groove, a second groove and a drainage channel connecting the first groove and the second groove, a motor, a shaft located in the housing and provided with a guide portion, and a leak detection belt set in an accommodation chamber in the housing and embedded in the second groove. In this way, if liquid enters the housing, the guide portion of the shaft guides the liquid into the first groove, so that the liquid reaches the second groove along the drainage channel. At this time, the leak detection belt can be used for leakage detection to protect key components.