9/15/2023 0 Comments Forged carbon fiber bike![]() ![]() ![]() In the case of a 2-piece mould this feature will require a slight draft angle of 2-3 degrees to allow the mould to easily separate, in multi-part tooling it is often possible to design the mould so that it can separate away from a completely parallel ‘piston’ feature.įor volume production compression mould tools for this process would generally be manufactured from machined aluminium or steel, these would obviously offer excellent strength and durability but are expensive to produce making them less viable for short runs and prototyping.Īn alternative to billet metal tools is epoxy resin cast tooling in this project we will be using mould tools that have been cast in TC80 tool-cast resin, this example has been made by taking the castings from and existing injection moulded component but equally this could be cast from a conventional pattern or a 3D print. This telescopic or ‘piston-like’ element needs to be deep enough to allow the mould to start to close before disturbing the fibre, the exact size of this feature will vary depending on the mould shape and design but a general rule of having the feature extend at least 25% of the depth of the final component would be a good estimate. The main consideration when designing tooling for this process is to include a telescopic section where the male tool acts like a piston inside a cylinder during closure, this allows room to load the uncompressed fibre and then during closure and excess resin will be squeezed out through the parting line but, being very closely fitting, the fibre cannot escape leaving you with the correct fibre to resin ratio. ![]() Compression mould tools will comprise of 2 or more parts which close together leaving a cavity where the component will be formed, in almost all circumstances the mould will be in a ‘block’ like format to provide strength and make the clamping or compression process practical. ![]()
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