Flexible Cover Sliding Guide for Machine Tools
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Solution Overview
Problem
Conventional flexible covers for machine tools, which use roller bearings for guidance, fail to withstand high speeds and accelerations, leading to frequent damage and maintenance issues, resulting in prolonged downtimes.
Innovation Solution
The use of a sliding guide formed by a guide element and rail, where the guide elements are made of steel and the rail is made of wear-resistant plastic, with a guide pin and slot design that enhances lateral guidance and prevents tilting, reducing wear and maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If roller bearings are used for guiding the link apron, then the friction during movement is kept low, but the roller bearings cannot withstand high speeds and accelerations and are damaged after short time
Solution Approach 1:
The patent extracts and removes the roller bearing component from the guidance system, replacing it with a simpler sliding guide consisting of guide elements and guide rails. This elimination of the complex roller bearing structure resolves the contradiction by achieving reliable operation at high speeds and accelerations without the fragility inherent in roller bearing designs.
Solution Approach 2:
The patent employs simple guide elements made of wear-resistant plastic that can be easily replaced when worn, rather than using complex roller bearings that fail under high acceleration. The guide elements are designed to be inexpensive and replaceable, allowing quick maintenance without costly bearing replacements.
2Productivity
If roller bearings are used for guidance, then movement friction is reduced, but maintenance intervals are short and downtimes are prolonged
Solution Approach 1:
The guide elements are designed as simple, inexpensive components made of wear-resistant plastic that can be quickly replaced when worn. This approach prioritizes rapid maintenance over long component life, allowing quick replacement during brief maintenance windows and minimizing machine downtime.
Solution Approach 2:
The patent changes the material parameter from metal roller bearings to wear-resistant plastic guide elements. This material substitution alters the wear characteristics and failure mode, enabling simpler, faster maintenance procedures that reduce overall downtime despite potentially more frequent replacements.
3Reliability
If guide elements are made of steel and guide rail of wear-resistant plastic, then wear is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent applies different materials to different components based on their specific functional requirements: steel guide elements provide structural strength and precision, while wear-resistant plastic guide rails provide low-friction sliding surfaces. This localized material optimization achieves superior wear resistance while keeping each component's manufacturing relatively simple.
Solution Approach 2:
The patent employs a composite material system combining steel and wear-resistant plastic in the guidance mechanism. This combination leverages the advantages of both materials - the strength and precision of steel and the low-friction, wear-resistant properties of plastic - creating a reliable guidance system that withstands high speeds and accelerations.
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 solution allows the flexible cover to operate at high speeds and accelerations with reduced wear, extending maintenance intervals and minimizing downtime, while ensuring reliable operation and extended service life.
Implementation Method 1
a sliding guide which is formed by a guide element and a guide rail
Data Source
Figure 1~2
Figure 3~4
Figure 5a~5c
AI summary
The flexible cover (1) has multiple articulated connecting units (6) with a link apron (4), which is movably guided across a guiding device (10) along a guide rail (12). The guiding device and the guide rail form a slider. The guiding device is made of metal, particularly from steel and the guide rail is made from plastic.