Optical Fiber Blade Attachment Jig for Precise Scratch Depth
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Solution Overview
Problem
Existing cutting devices for optical fibers face issues with blade member deterioration due to repeated contact, misalignment of the rotational axis leading to inconsistent scratch depth, and poor operability during blade member replacement.
Innovation Solution
A blade-member attachment jig and method that utilizes a pin-perpendicular shaft part and a jig with a hole for easy insertion and detachment, along with an elastic member to maintain precise positioning and facilitate safe, easy replacement of the blade member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the blade member is rotated during cutting operation to replace contact position, then the service life of the blade member is extended, but the manufacturing precision deteriorates due to eccentric rotational axis causing inconsistent scratch depth
Solution Approach 1:
A positioning member with a tapered portion is introduced as an intermediary between the blade member and the cutting device body. The tapered portion of the positioning member fits into a corresponding tapered hole, providing precise radial positioning that compensates for blade eccentricity. This mediator ensures the blade tip maintains a constant position relative to the optical fiber even when the blade rotates, thus preserving scratch depth consistency while extending blade service life through rotation.
2Manufacturing precision
If the blade member is made small for precision cutting, then the cutting precision is improved, but the ease of operation deteriorates due to difficult handling and replacement
Solution Approach 1:
The positioning member serves as a mediator that remains in the cutting device body while the small blade member is attached to it. This allows the blade to be small for precision cutting while the positioning member provides a larger interface for handling and replacement operations. The blade can be easily detached and reattached to the positioning member without requiring direct manipulation of the small blade itself.
Solution Approach 2:
The cutting device is segmented into three distinct components: the positioning member (remaining in the device body), the blade member (attachable/detachable), and the attachment mechanism. This segmentation allows the small blade to be replaced by detaching it from the positioning member using the attachment mechanism, rather than requiring direct handling of the small blade itself, thus improving ease of operation while maintaining cutting precision.
3Manufacturing precision
If the blade member is firmly fixed to ensure positioning accuracy, then the manufacturing precision is improved, but the ease of operation deteriorates due to difficulty in replacement
Solution Approach 1:
The attachment mechanism employs a dynamic design where the state of the blade-positioning member connection can change from firmly fixed during cutting operations to easily detachable during replacement. The attachment part includes features that provide strong holding force during use but allow for simple detachment when needed, enabling the system to switch between these two states as required by different operational phases.
Solution Approach 2:
The positioning member is pre-installed in the cutting device body with its tapered portion already in place. When replacing the blade, the attachment mechanism is used to preliminarily align and guide the blade onto the positioning member, ensuring accurate positioning before final attachment. This preliminary action simplifies the replacement process while maintaining positioning accuracy.
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
Enhances the precision and quality of optical fiber cutting by maintaining consistent scratch depth and improves operability, allowing for safer and easier blade member replacement.
Implementation Method 1
An elastic member may be disposed between the fixing member and the blade member. The elastic member may press the blade member toward the support part.
Data Source
AI summary
A shaft part of a disk-shaped blade member has a support part that supports the blade member and a fixing screw that fixes the support part, and the blade member is arranged so as to be interposed between the fixing screw and the support part. A pin oriented in the direction perpendicular to the axial direction of the shaft part is formed in the support part (shaft part). A jig is a member used when attaching the blade member to a cutting device. A hole is formed in a substantially cylindrical body of the jig. The pin provided to the shaft part of the blade member is insertable in the hole. Through use of the jig, by mounting the jig on the pin and using the jig to attach the blade member to a blade member attachment part, it is possible to attach the blade member to the attachment part without touching the blade member.