SPINDLE ASSEMBLY Russian patent published in 2012 - IPC F16C32/04 F16C32/06 B23Q1/38 B24B41/04 

FIELD: machine building.

SUBSTANCE: spindle assembly consists of housing (1) made in the form of a pipe with end walls, one of which, i.e. cover plate (8), is located in close proximity to cutting tool (7), and the other one, i.e. flange (6), is located in close proximity to turbine wheel of drive (11). Spindle (4) is installed so that it can be rotated in radial and thrust bearings located on opposite ends of spindle. The first thrust bearing is located in close proximity to turbine drive of spindle (4) and formed with centre pivot (2) and wall of flange (6), in which porous gas flow limiters (10) are made. The second thrust bearing is formed with wall of cover plate (8) with porous flow limiters (10) and centre pivot (2). In radial gas static bearing (5) which is located on the side of tool (7) there installed is magnetic conductor (3) which forms gas magnetic bearing (9) together with bearing (5).

EFFECT: improvement of spindle assembly by changing its design allowing to provide the increase in cutting load of assembly owing to additional magnetic force which is created in radial bearing.

2 dwg