Pivotable Cutting Mechanism for Composite Lay-Up Tip Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing composite lay-up equipment has a bulky tip region due to conventional cutting mechanisms, limiting its ability to apply fibre reinforcement material to complex or hard-to-access parts with high curvature.
Innovation Solution
A cutting mechanism featuring a pivotable cutting element and counteracting element, guided by an elongate arm with an actuation device, allowing for a compact design that can manipulate fibre reinforcement material over complex geometries by performing a cutting stroke transverse to the pivot axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional cutting mechanisms are used, then cutting function is provided, but the tip region becomes bulky which limits ability to access complex geometries
Solution Approach 1:
The cutting mechanism is divided into separate functional elements: a cutting element mounted on a pivotable arm, and a counteracting element positioned separately. This segmentation allows the cutting element to be positioned at the tip while the actuation mechanism remains remotely mounted, reducing tip region volume and enabling access to complex geometries.
Solution Approach 2:
A pivotable arm acts as an intermediary between the remotely mounted actuation device and the cutting element. The arm transmits motion from the actuator to the cutting element, allowing the bulky actuation mechanism to be positioned away from the tip region while still controlling the cutting operation effectively.
2Measurement precision
If actuation device is mounted close to cutting element, then cutting control is precise, but equipment becomes bulky at tip region
Solution Approach 1:
The actuation device is extracted from the tip region and mounted remotely on the lay-up equipment. The pivotable arm serves as a transmission mechanism that carries the cutting element to the precise location needed while keeping the bulky actuator away from the tip, thus maintaining cutting precision without increasing tip region complexity.
Solution Approach 2:
The system transitions from a compact tip-mounted actuator to a distributed arrangement where the actuator is positioned in a different spatial dimension (remotely on the equipment body) and connects to the cutting element through a pivotable arm, effectively using spatial arrangement to resolve the conflict between precision and bulkiness.
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 the cutting of fibre reinforcement material in a compact tip region, allowing for the application to complex surfaces with high curvature or hard-to-reach areas without the need for bulky actuators, improving the equipment's versatility and precision.
Implementation Method 1
a cutting element mounted on an elongate arm which is pivotable about a pivot axis spaced from the nip, to displace the cutting element relatively to the counteracting element to perform a cutting stroke
Data Source
AI summary
There is disclosed a cutting mechanism for severing elongate fibre reinforcement material in composite material lay-up equipment, the cutting mechanism comprising a cutting element and a counteracting element which cooperate to sever fibre reinforcement material extending through the nip between them, the cutting element being mounted on an elongate arm which is pivotable about a pivot axis A spaced from the nip, to displace the cutting element relatively to the counteracting element to perform a cutting stroke, the mechanism further comprising guide means arranged to guide the fibre reinforcement material through the nip in a feed direction transverse to the pivot axis A, and an actuation device for driving the elongate arm in a cutting stroke, the actuation device acting on the elongate arm at a position away from the cutting element. There is also provided composite material lay-up equipment comprising the cutting mechanism.