【図面の簡単な説明】[Brief explanation of drawings]
第１図は本考案の実施例に係る２パツド型軸受
の断面図、第２図は本考案の実施例に係る上部軸
受ぬすみ加工の一実施例図、第３図は本考案の実
施例に係る上部軸受ぬすみ加工の他の実施例図、
第４図は本考案の実施例に係る改良型軸受の作用
説明図、第５図は従来技術の作用説明図、第６図
は従来技術の２パツド型軸受の断面図、第７図は
第６図のＢ−Ｂ断面図、第８図ないしは回転
軸ふれまわり時の遠心力と負荷能力の作用説明図
である。
１……上部軸受、２……下部ケーシング、３…
…軸受パツド、４……回転軸、５……油入口、６
……油出口、７……ピボツト、８……凹部、９…
…当て板、１０……軸受、１１……接触域、１２
……油膜圧力発生域、１３……最小油膜位置、Ｗ
……遠心力、Ｐ……油膜圧力、Ｐｕ……上部軸受
負荷能力、ＰＬ……軸受パツド負荷能力、Ｒ０…
…軸受半径、Ｒ１，Ｒ２……加工半径、△Ｒ１，
△Ｒ２……加工中心の移動量、△ｌ１，△ｌ２…
…ぬすみ量、Ｏ０……半径Ｒ０の中心点、Ｏ１…
…半径Ｒ１の中心点、Ｏ２，Ｏ２′……半径Ｒ２
の中心点、Ｃ……ぬすみ部。
Fig. 1 is a sectional view of a two-pad type bearing according to an embodiment of the present invention, Fig. 2 is a diagram of an example of undercut machining of an upper bearing according to an embodiment of the present invention, and Fig. 3 is a cross-sectional view of a two-pad type bearing according to an embodiment of the present invention. Other example diagrams of such upper bearing undercut machining,
FIG. 4 is an explanatory diagram of the operation of the improved bearing according to the embodiment of the present invention, FIG. 5 is an explanatory diagram of the operation of the prior art, FIG. 6 is a sectional view of the two-pad type bearing of the prior art, and FIG. FIG. 6 is a sectional view taken along line B-B in FIG. 6, and FIG. 1... Upper bearing, 2... Lower casing, 3...
... Bearing pad, 4 ... Rotating shaft, 5 ... Oil inlet, 6
...oil outlet, 7...pivot, 8...recess, 9...
...Backing plate, 10...Bearing, 11...Contact area, 12
...Oil film pressure generation area, 13...Minimum oil film position, W
... Centrifugal force, P ... Oil film pressure, Pu ... Upper bearing load capacity, PL ... Bearing pad load capacity, R 0 ...
... Bearing radius, R 1 , R 2 ... Machining radius, △R 1 ,
△R 2 ...Amount of movement of the processing center, △l 1 , △l 2 ...
...Amount of thinning, O 0 ... Center point of radius R 0 , O 1 ...
...center point of radius R1 , O2 , O2 '...radius R2
The center point, C...the hollow part.