Work Spindle Cooling Sealing Device for Misalignment Compensation
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Solution Overview
Problem
Existing work spindle cooling devices face issues with misalignment between stationary and rotating parts, leading to sealing problems and compromised functionality.
Innovation Solution
A work spindle cooling device with a sealing device that includes a rotatable bushing and support/guide element, allowing adaptation to offsets between stationary and rotating parts while maintaining a sealed radial gap division into inlet and return areas, using multiple radial feed and return passages and elastic seals for effective coolant management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a sealing device with stationary and rotating bushings is used to cool the work spindle, then cooling effectiveness is improved, but misalignment between stationary and rotating parts causes sealing problems
Solution Approach 1:
The sealing device is designed with a dynamic support and guide element that can laterally displace relative to the stationary bushing. This dynamic adjustment capability allows the sealing device to adapt to misalignment between stationary and rotating parts, maintaining reliable sealing while enabling effective coolant flow to cool the work spindle
Solution Approach 2:
The support and guide element acts as an intermediary between the stationary bushing and the rotating sealing components. It provides both support and guidance while allowing lateral displacement to compensate for misalignment, thereby mediating between the stationary housing and rotating work spindle to maintain sealing reliability
2Reliability
If radial seals are used to seal the gap between stationary and rotating bushings, then sealing is improved, but misalignment reduces sealing effectiveness
Solution Approach 1:
The radial seals are integrated into a sealing device that can dynamically adjust its position through lateral displacement of the support and guide element. This dynamic capability allows the radial seals to maintain contact and sealing effectiveness despite misalignment between stationary and rotating parts
Solution Approach 2:
The sealing device changes its positional parameters by laterally displacing the support and guide element relative to the stationary bushing. This parameter adjustment allows the radial seals to adapt to varying degrees of misalignment while maintaining sealing effectiveness
3Volume of moving object
If a compact design with integrated clamping device and internal coolant supply is used, then space efficiency is improved, but complexity of sealing and cooling system increases
Solution Approach 1:
The sealing device and cooling system are merged into a single integrated unit. The stationary bushing, rotating bushing, radial seals, and coolant passages are combined in one compact assembly that performs both sealing and cooling functions simultaneously, reducing overall device volume while managing complexity through functional integration
Solution Approach 2:
The sealing device serves multiple functions: it seals the radial gap between stationary and rotating parts, guides the rotating components, supports the sealing elements, and provides coolant passages for thermal management. This multi-functionality reduces the need for separate components, achieving compact design
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
Ensures a reliable seal and effective coolant circulation, compensating for misalignment and enhancing the cooling efficiency of the work spindle while maintaining a compact design suitable for integrated clamping devices and internal coolant supply.
Implementation Method 1
elastically flexible radial seals
Implementation Method 2
supply channels for supplying a coolant, return channels for returning the coolant from the work spindle
Data Source
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AI summary
The invention relates to a work spindle cooling device (5) comprising a housing (22, 23), a feed channel (26, 28) arranged within the housing (22, 23), a return channel (27, 29) arranged within the housing (22, 23), and a sealing device (57) arranged within the housing (22, 23). The sealing device (57) has a stationary bushing (58), a bushing (59) rotatable relative to the stationary bushing (58), seals (71, 72) arranged between the stationary bushing (58) and the rotatable bushing (59) for sealing an annular gap (73) between the stationary bushing (58) and the rotatable bushing (59), and at least one support and guide element (79) arranged between the stationary bushing (58) and the rotatable bushing (59) and bearing against both bushings (58, 59).