Cooling Nozzle Coupling With Self-Locking Rotary-Linear Positioning
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Solution Overview
Problem
Existing cooling nozzle connection systems for grinding machines require significant setup time and adjustment, reducing the available time for actual grinding operations.
Innovation Solution
A rotary-linear transmission mechanism that converts rotational motion into linear motion, allowing for quick and precise positioning of a cooling nozzle without the need for additional fixing means, using a self-locking design and a manual lever for easy attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a cooling nozzle is adjusted during the set-up process, then the positioning precision is improved, but the setup time increases
Solution Approach 1:
The connection device features a movable tube section that can be displaced along the central axis to adjust the nozzle position. The rotary-linear transmission converts rotational movement of the drive element into precise linear displacement of the tube section, enabling dynamic positioning adjustment during set-up while maintaining quick change capability
Solution Approach 2:
The connection device is divided into separable components including the housing, drive element, tube section, and cooling nozzle. This segmentation allows the nozzle to be quickly detached and repositioned by adjusting the tube section, reducing setup time while maintaining positioning precision through the controlled displacement mechanism
2Ease of operation
If a manual lever with rotary-linear transmission is used, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The rotary-linear transmission is designed as self-locking, meaning it automatically maintains the positioned state of the tube section without requiring additional fixing means. The transmission mechanism itself provides the locking function through its mechanical design, eliminating the need for separate clamping screws or locking devices and simplifying the overall operation
Solution Approach 2:
The drive element is integrated directly into the housing structure, and the rotary-linear transmission mechanism combines the positioning and locking functions in a single integrated system. The manual lever connects directly to the drive element, merging the operation control with the transmission mechanism to reduce the number of separate components
3Reliability
If the tube section is secured against rotation, then the reliability is improved, but the ease of operation worsens
Solution Approach 1:
The tube section has differentiated functional zones: the circumferential surface features a circumferential groove that engages with the housing to prevent rotation and ensure connection stability, while the longitudinal end remains free for linear displacement and nozzle attachment/detachment operations
Solution Approach 2:
The tube section is designed with selective mobility - it is constrained against rotation through the circumferential groove engagement for reliable connection, but remains free to move longitudinally along the central axis for easy nozzle attachment and detachment. This dynamic constraint system maintains both reliability and ease of operation
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
Enables rapid and secure connection of cooling nozzles to a lubricant supply, minimizing downtime and maximizing grinding machine efficiency by allowing quick changes and precise positioning with a single hand movement.
Implementation Method 1
A rotary-linear transmission which has a drive element (4) that can be pivoted about a central axis (MA) and which is connected to a manual lever (5), and which has a tube section (10) as an output element that can be displaced along the aforementioned central axis (MA) in a housing (6)
Implementation Method 2
The rotary-linear transmission, with which the tube section provided for the passage of cooling lubricant is displaced within the connection device without rotating it, can be designed as a self-locking transmission. This means that the manual lever cannot be deflected from the output side of the transmission, i.e., by a force acting on the tube section in the longitudinal direction
Data Source
AI summary
A device for connecting a cooling nozzle to a cooling lubricant supply for a grinding machine includes a central axis, a housing arranged for receiving the cooling nozzle, a rotary-linear transmission and a tube section. The rotary-linear transmission has a drive element, pivotable about the central axis, and a manual lever fixed to the drive element. The tube section is rotationally fixed in the housing and movable along the central axis by the rotary-linear transmission to be pressed against the cooling nozzle. The rotary-linear transmission may be a self-locking transmission. The drive element may have a thread structure which extends over less than a full revolution.