Mandrel Support Device for Tube Bending Lubrication
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Solution Overview
Problem
Conventional methods for supplying lubrication fluid to mandrels in tube bending machines are complicated and difficult to use, requiring frequent disconnection and reconnection of fluid fittings when switching between mandrels of different diameters, exacerbated by the slippery nature of lubrication fluids.
Innovation Solution
A mandrel support device with a mandrel sleeve and base that forms a reservoir for lubrication fluid, allowing fluid communication through a lubrication channel and passage, and a retainer system that permits interchangeable mounting and rotation of the mandrel sleeve, maintaining fluid connection regardless of mandrel size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional methods are used to supply lubrication fluid to mandrels, then fluid connection can be maintained, but the system requires frequent disconnection and reconnection of fluid fittings when switching between mandrels of different diameters, making the operation complicated and difficult
Solution Approach 1:
The mandrel support device with universal socket and retainer groove design allows a single base structure to accommodate multiple mandrels of different diameters. The fluid fitting connected to the socket provides universal fluid supply across all mandrel sizes, eliminating the need for different fittings for each mandrel type.
Solution Approach 2:
The mandrel support device acts as an intermediary between the fluid fitting and the mandrel. The socket and retainer groove system mediates the connection, allowing fluid to reach the mandrel through the support device structure rather than requiring direct connection to each mandrel.
2Adaptability or versatility
If fluid fittings are disconnected and reconnected frequently when switching mandrels, then different mandrel sizes can be accommodated, but the slippery nature of lubrication fluids makes this process more difficult and time-consuming
Solution Approach 1:
The universal socket and retainer groove design enables the same fluid connection system to work with all mandrel sizes. Operators only need to change the mandrel itself, not the fluid fitting connections, saving time especially when handling slippery lubrication fluids.
Solution Approach 2:
The fluid fitting is pre-connected to the mandrel support device base before mandrel insertion. This preliminary connection setup eliminates the need for repeated connection actions when switching mandrels, reducing time loss and operational complexity.
3Reliability
If a fixed connection system is used for fluid supply, then connection stability is maintained, but the mandrel sleeve cannot rotate with respect to the mandrel base
Solution Approach 1:
The retainer groove and retainer design creates a dynamic connection system. The retainer engages with the retainer groove to maintain fluid connection reliability, while allowing rotational movement between the mandrel sleeve and mandrel base, combining stability with operational flexibility.
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
Simplifies the lubrication process by maintaining fluid communication at any rotational position, allowing for efficient bending and easy removal of mandrels without disconnecting the fluid fitting, reducing complexity and improving usability across various mandrel sizes.
Implementation Method 1
an annular lubrication channel formed on the sleeve exterior of the mandrel sleeve, and at least one lubrication passage extending between the lubrication channel and the bore to permit fluid communication between the bore and the lubrication channel
Data Source
AI summary
A mandrel support device includes a mandrel sleeve positionable on a mandrel to form a reservoir in fluid communication with a mandrel passage, and with. The sleeve may include a bore configured to receive a portion of the mandrel, a lubrication channel formed on the sleeve exterior, and a lubrication passage extending between the channel and the bore to permit fluid communication therebetween. A mandrel base may define a socket for interchangeably receiving the sleeve, and a lubrication bore may extend from the socket to the base to align with the lubrication channel when the sleeve is received in the socket. A fluid fitting mounted on the base in fluid communication with the lubrication bore and the lubrication channel of the sleeve such that fluid moving through the fluid fitting enters the bore, the channel and passage to reach the reservoir and mandrel passage at any rotational position of the sleeve with respect to the base.