The manufacture of large precision CNC machined pieces can present a particular challenge. Large scale CNC machining is our specialty though and our expertise, together with the right software and machinery, allows us to offer this very specialist service to our clients.
Machining very large items needs a particularly creative approach in terms of work holding and CNC programming. Thompson Precision is able to generate the necessary CNC code using either our clients’ 3D CAD data or our own data created with our solid-works design package. In addition to this we can also draw in the required holding clamps and special fixtures. This enables us to simulate every facet of the CNC machining process which then cuts down enormously on the risk of any errors.
Delcam PowerShape: This is a 3D computer aided design solution enabling the design of 3D complex models using surfaces, solids and triangles.
Delcam PowerMill: This is the complementary 3D computer aided manufacturing solution that allows us to programme tool paths for two to five axis CNC milling machines. We can use it to figure out the optimal tool paths which not only allows us to decrease the time and cost of manufacturing but also cuts down on tool loads and produces smooth surface finishes.
The combination of Delcam PowerMill and Delcam PowerShape enable us to quickly create rapid 3D machining strategies and design totally interactive work, holding fixtures and multi-part machining concepts.
We are able to machine complicated three dimensional shapes in single blocks of material as large as 2m x 1m x 1m. Not only this but we can manufacture much bigger parts by employing a variety of material joining methods and work piece manipulation, so there is almost no limit to what can be produced.
Some of the specialised machining areas we are experienced in are precision million of large hydraulic manifolds, automotive assembly fixtures, injection mould tooling, welded fabrications, carbon fibre and GFP patterns. We are able to do this in quantities ranging from one offs to very large quantities, while still remaining cost effective regardless. Although we can safeguard against having to scrap the (normally expensive) raw materials as a result of error and the expense of re-manufacture, we are still able to keep programming as quick as possible – a difficult combination to maintain!
Our large scale CNC machining process
First the 3D CAD data is obtained, either from the client or generated in house. This is then passed on to our CNC engineers to import into Delcam PowerShape and figure out the most suitable CNC milling method for machining the part(s).
All tool paths are then created and checked within the PowerMill software by running a tool path simulation to make sure the machined part is completely accurate. Once the tool paths have been checked the piece is ready to be machined in our large scale CNC machining centre.
You can read a case study demonstrating our process in the CNC machining of a large hydraulic manifold or view our large CNC milling gallery.
