Originally, much of our work came in for machining small to medium size components through CNC laser, flame and plasma cutting. This still accounts for a large portion of the business and hence the continuing investment in the latest CNC equipment. However, with most of our clientele in the mining and construction industries we were getting more and more requests to manufacture and refurbish larger work pieces and components that in some cases can weigh many tons.
Using Renishaw probe components are checked for specifications by StrucMAC.
Large-part machining presents different challenges. You can define large-part machining as any component that is too heavy or bulky for a single human being to move the part to another location quickly, or too large to fit within the work zone of the most commonly available CNC machine tools. Parts such as these could apply to almost any industry, though aircraft, construction, power generation, mining and oil drilling are ready examples of industries that commonly have a need for very large machined parts. In large-part machining, much of the challenge has to do with performing as much of the work as possible in a single setup. Today five-axis or 3+2 machining is often required to let a machining center reach many of the features of the part in a single setup.
We invested in our first ‘large’ CNC machine in 2009 – a Sanco SDM 4225 L, a bridge type CNC double column machining center, supplied by WD Hearn. The machine has a table size of 4 000 by 2 000mm and can take a load of 12 tons. This was followed shortly by another large Sanco CNC machine, but this time a horizontal boring machine. The table size on this machine is 1 400 by 1 600mm and it can take a load of seven tons.
For further details on what StrucMAC can offer you, call us on 011 822 2399.