Patent ID: 6705431
Filing Date: 2004-03-16
Classification: F16C

Abstract:
A method for lubricating a rotational-part supporter, the rotational-part supporter having an inner part and an outer part in which one of the inner part and outer part is fixed, and the other of the inner part and outer part is rotated, and a main rotational bearing lies between the inner and outer parts, the method comprising the steps of:supplying a predetermined quantity of lubricant to the rotational bearing at predetermined time intervals, and adjusting at least one of the following in accordance with a rotational speed of the rotational bearing: said time intervals, and the lubricant supply quantity at one time; and further comprising the steps of: prestoring both a lubricant supply time interval and the lubricant supply quantity at one time that correspond to a plurality of rotational speeds in accordance with a revolving speed of the rotational bearing; standardizing a corresponding time interval T0 and a corresponding supply quantity V0 at one time for a minimum value of a rotational speed &ohgr;1, larger than a rotational speed &ohgr;0 input to a computer and a maximum value of a rotational speed &ohgr;2, smaller than said rotational speed &ohgr;0, wherein said rotational speeds &ohgr;1 and &ohgr;2 are input to the computer as a plurality of rotational speeds prestored with respect to an input signal denoting an actual rotational speed maintained for each rotational bearing; performing the following proportional-distribution calculation based: (T1âˆ’T0)/(T0âˆ’T2)=(&ohgr;0âˆ’&ohgr;1)/(&ohgr;2âˆ’&ohgr;0), (V2âˆ’V0)/(V0âˆ’V1)=(&ohgr;2âˆ’&ohgr;0)/(&ohgr;0âˆ’&ohgr;1), wherein T1 is an appropriate time interval corresponding to the rotational speed &ohgr;1, T2 is an appropriate time interval corresponding to the rotational speed &ohgr;2, V1 is an appropriate supply quantity at one time corresponding to the rotational speed &ohgr;1, and V2 is an appropriate supply quantity at one time corresponding to the rotational speed &ohgr;2; calculating an appropriate lubricant supply time interval and an appropriate lubricant supply quantity at one time that correspond to the rotational speed by the input signal in accordance with the proportional-distribution calculation; and issuing a command to a lubricant supply device.