The AF Series with tool changer includes electro-spindles with angular contact couples, which allow a high number of rpm to be reached while maintaining a good degree of rigidity under thermal expansion during production processes. These electro-spindles are suitable for machining various materials such as thermosets, wood, plastic and light alloys. Elte also produces a series of electro-spindles ideal for machining stone and glass. The electro-spindles in the AF Series with tool changer feature three different types of cooling: liquid or compressed air, liquid passing through the shaft, 24 V DC electric fan.
In this series, the most prominent electro-spindle is the AF90 10/2 CU with an ISO 30 taper. It has a compressed air cooling system, allowing perfect heat dissipation of the electro-spindle and preventing any problems of overheating.
These electro-spindles were specifically chosen by Ronchini Massimo S.R.L. for their 3D milling robot line RM-RoboCut3D. This type of machinery for producing highly complex hollow sections is exclusively designed with high-precision components that provide excellent finishing. They are the ideal solution for milling foam, wood, resins and plastics.
Individual pieces are created using industrial milling machines mounted on a high-speed electro-spindle. Thanks to the ISO 30 taper, the tool change takes place automatically during the machining cycle. The standard AF90 10/2 CU ISO 30 electro-spindle reaches 24,000 rpm, however, thanks to Elte’s specialised engineers a new customised version of the motor has been designed that can reach 36,000 rpm.
With the preloaded bearings, the speed of the electro-spindle was significantly increased, without sacrificing the precision of the machine when machining the material. Preloading the bearings increases the rigidity of the system, thereby extending the life of the bearings, increasing the level of rotation accuracy, preventing slippage during start-up or rapid stop and reducing the noise level of the machine.
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