Hoffman Estates, Illinois – Big Kaiser is introducing the RBX12 Air Power Spindle, a high-speed air-driven spindle that achieves a variable rotational speed of 100,000rpm to 120,000rpm.
The air-driven spindle, produced by Big Daishowa Seiki, enables existing machines to be cost-effectively upgraded to perform high-speed micro-machining in a normal machining center since this tool is driven by air supplied through a stop block or through the machine spindle. Since there is no rotation of the machining center spindle required, an expensive machine tool spindle can be used without wear.
Operating at high speeds helps to improve machining accuracy, enhance surface finish, lengthen tool life, and reduce wear on the cutting tool.
High-speed operation also means that processing time can be reduced. In various trials, the RBX12 was able to reduce machining time by more than 300% because of higher rotational speed.
Due to its ceramic ball bearings and precise collet system, the runout accuracy of the RBX12 enables ultra-thin wall cutting. The AA-grade Mega Micro Collet offers 1µm runout at the collet nose, and the 0.004" collapsibility assures a near-perfect concentric clamping of a micro-tool shank.
The RBX12 minimizes thermal displacement in the Z-axis – constant at <0.001mm – while standard machining center spindles vary up to 0.012mm.
The RBX12 is available with BCV40, BBT30/40 & HSK-A63/F63/E32 interfaces, and models not requiring a stop block have an extremely small body diameter of 32mm (1.260"). Automatic tool change is possible.
Source: Big Kaiser