Rolling Mill Gear Spindle Cooling to Prevent Coolant Scattering
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Solution Overview
Problem
The existing gear spindle devices in rolling mills face issues with coolant scattering, which can negatively affect nearby devices and the material being rolled, leading to performance deterioration and wear.
Innovation Solution
A gear spindle device design that includes a coolant supply unit positioned opposite to the seal member across the engagement portion in the axial direction, allowing for targeted coolant delivery to the spindle outer cylinder, thereby minimizing coolant scattering and its negative impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If coolant is supplied to cool the gear spindle device, then the cooling effect is improved, but coolant scatters and causes negative influence on nearby devices and material
Solution Approach 1:
The coolant supply unit is positioned to supply coolant locally to the spindle outer cylinder at the engagement portion, rather than general cooling. This targeted local cooling achieves effective temperature control while minimizing coolant dispersion to surrounding areas and materials.
Solution Approach 2:
The spindle outer cylinder serves as an intermediary medium that receives coolant at its engagement portion and conducts the cooling effect internally to the gear engagement area, preventing direct coolant contact with nearby devices and material while maintaining effective cooling.
2Ease of manufacture
If coolant is supplied from the side of the seal member, then cooling access is easier, but coolant scatters toward the seal member and lubricant oil
Solution Approach 1:
Instead of supplying coolant from the seal member side (conventional approach), the coolant supply unit is positioned at the opposite side of the seal member across the engagement portion. This inverted positioning prevents coolant from directly contacting the seal member and lubricant oil, eliminating the risk of contamination while maintaining cooling effectiveness.
Solution Approach 2:
The coolant supply function is extracted from the seal member side and relocated to the opposite side. This separation removes the conflicting requirements of easy coolant access and seal member protection, allowing each to function independently without interference.
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 design effectively reduces the negative influence of coolant on devices and the material being rolled by preventing coolant scattering and ensuring efficient cooling of the gear spindle device.
Implementation Method 1
a coolant supply unit disposed at an opposite side to the seal member across the engagement portion in an axial direction of the spindle outer cylinder, for supplying a coolant toward the spindle outer cylinder in a formation region of the engagement portion
Data Source
AI summary
A gear spindle device for a rolling mill includes: a spindle outer cylinder having, at a first end side, an inner circumferential surface provided with an inner circumferential gear; a spindle inner cylinder having an outer circumferential surface provided with an outer circumferential gear which engages with the inner circumferential gear; a seal member disposed between the spindle outer cylinder and the spindle inner cylinder, for holding a lubricant oil at an engagement portion between the inner circumferential gear and the outer circumferential gear; and a coolant supply unit disposed at an opposite side to the seal member across the engagement portion in an axial direction of the spindle outer cylinder, for supplying a coolant toward the spindle outer cylinder in a formation region of the engagement portion where the engagement portion is formed.