Machine Tool Gas Bearing Temperature Control with Dual-Device Failover
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Solution Overview
Problem
Existing temperature control systems for machine tools fail to maintain machining accuracy when the temperature control device operates abnormally, leading to thermal displacement and deterioration of workpieces.
Innovation Solution
A temperature control system comprising a first temperature control device for the gas bearing, a second temperature control device with a state notification function, and a gas supply section that distributes controlled gas to both the gas bearing and interior space when the second temperature control device's operation state is abnormal, ensuring continuous temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single temperature control device is used for the machine tool, then the device complexity is reduced, but the reliability deteriorates because the system cannot maintain temperature control when the device operates abnormally
Solution Approach 1:
The temperature control system is segmented into two independent temperature control devices: a first temperature control device for controlling the temperature of gas supplied to the gas bearing, and a second temperature control device for controlling the temperature of the room interior. This segmentation allows the system to maintain temperature control reliability by switching between devices when one operates abnormally, while keeping each individual device relatively simple in structure.
Solution Approach 2:
The system changes the operational parameters of the temperature control devices based on their operation state. When the second temperature control device operates abnormally, the gas supply control section switches to distributing gas primarily to the gas bearing through the first temperature control device. This parameter change enables the system to adapt to abnormal conditions and maintain reliable temperature control without requiring a completely complex redundant system.
2Manufacturing precision
If gas is supplied only to the gas bearing when the second temperature control device is abnormal, then the temperature control reliability is maintained, but the manufacturing precision deteriorates due to thermal displacement in the room interior
Solution Approach 1:
The first temperature control device is designed with multi-functionality to serve dual purposes: it controls the temperature of gas supplied to the gas bearing (primary function) and also contributes to controlling the temperature of the room interior (secondary function) when the second temperature control device operates abnormally. The gas supply control section achieves this by distributing temperature-controlled gas to both the gas bearing and the interior space, allowing the system to maintain both machining accuracy and temperature control reliability simultaneously.
3Manufacturing precision
If the gas supply section distributes gas to both the gas bearing and interior space during abnormal operation, then the manufacturing precision is maintained, but the use of energy increases
Solution Approach 1:
During abnormal operation of the second temperature control device, the gas supply control section implements partial action by distributing temperature-controlled gas to both the gas bearing and the interior space, rather than exclusively to one location. This partial distribution to multiple targets ensures that machining accuracy is maintained while avoiding excessive energy consumption by optimizing the gas supply strategy based on the specific abnormal condition, rather than continuously supplying maximum gas to all areas.
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 system effectively prevents machining accuracy deterioration by automatically switching temperature control between devices, maintaining ambient temperature stability even during abnormal operations, thus preventing thermal displacement.
Implementation Method 1
a first temperature control device configured to control a temperature of gas supplied to a gas bearing possessed by the machine tool
Implementation Method 2
a first temperature control device configured to control a temperature of gas supplied to a gas bearing possessed by the machine tool
Implementation Method 3
a second temperature control device configured to control a temperature of the room interior
Implementation Method 4
a second temperature control device configured to control a temperature of the room interior
Implementation Method 5
a gas supply section capable of supplying the gas bearing and an interior space of the cover with gas whose temperature has been controlled by the first temperature control device
Data Source
AI summary
A temperature control system for a machine tool is equipped with a first temperature control device configured to control the temperature of gas supplied to a gas bearing, a second temperature control device configured to control the temperature of a room interior and to issue a notification of its own operation state to the outside, a gas supply section configured to supply gas whose temperature has been controlled by the first temperature control device, and a gas supply control section configured to perform the gas supply control of the gas supply section so that gas is distributed to both of the gas bearing and an interior space, when receiving the notification that the operation state of the second temperature control device is abnormal.