Hose End Grinding Fixture for Conductive Layer Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
During the manufacturing of high-pressure reinforced hydraulic hoses, the cutting process often results in conductive layers contacting each other at the cut location, leading to inaccurate electrical property readings by monitoring circuits, which are designed to detect hose failure in a non-destructive manner.
Innovation Solution
A grinding fixture assembly is used to grind the end surface of the hose, featuring a housing, bearing assembly, and insert assembly with an adapter and bearing, allowing the hose to orbit around a central axis while maintaining the end surface rotationally stationary, thus preventing contact between conductive layers and enabling accurate electrical property measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the hose is cut to desired length during manufacturing, then the hose can be used for specific applications, but the conductive layers contact each other at the cut location causing inaccurate electrical property readings
Solution Approach 1:
The patent applies preliminary action by performing a cleaning operation at the cut end of the hose before electrical property measurements are taken. The cleaning fixture removes material from the cut end to prevent contact between conductive layers, ensuring accurate subsequent measurements without requiring re-cutting or additional processing steps later in the manufacturing workflow.
2Reliability
If a monitor circuit is used to detect hose failure non-destructively, then hose integrity can be assessed, but the conductive layers may contact each other at cut locations rendering the monitoring inaccurate
Solution Approach 1:
The patent introduces an intermediary cleaning operation between the cutting process and the electrical monitoring setup. The cleaning fixture acts as a mediator that prepares the cut end surface by removing conductive material that would otherwise cause short circuits, thereby enabling the monitor circuit to function accurately without interfering with the hose's failure detection capability.
3Ease of manufacture
If the cut end surface is left as-is after cutting, then the manufacturing process is simple and quick, but the conductive layers contact each other causing malfunction
Solution Approach 1:
The cleaning fixture performs a preliminary cleaning action immediately after cutting, removing excess conductive material from the cut end surface. This preliminary treatment maintains the simplicity of the cutting process while preventing the harmful contact between conductive layers, ensuring the hose is ready for electrical monitoring without complex additional processing.
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 method ensures that the conductive layers do not contact each other, allowing for accurate detection of hose failure and preventing malfunction by ensuring precise electrical property readings post-cutting.
Implementation Method 1
The bearing allows for rotation of the insert housing while the adapter is maintained rotationally stationary so that the surface of the part orbits about the central longitudinal axis
Data Source
AI summary
A grinding fixture assembly for use in grinding an end surface of a hose includes a housing, a bearing assembly disposed in the housing, and an insert assembly. The bearing assembly defines a central bore. The insert assembly is disposed in the central bore of the bearing assembly. The insert assembly includes an insert housing, an adapter and a bearing. The insert housing defines a thru-hole that extends through the insert housing. The thru-hole is disposed at an oblique angle in the insert housing. The adapter is disposed in the thru-hole of the insert housing. The adapter defines a bore that is adapted to receive an end portion of a hose. The bearing is disposed between the insert housing and the adapter. The bearing allows for rotation of the insert housing while the adapter is maintained rotationally stationary.