摘要:
Plural spline shafts are arranged around columnar plasma, and plural spline shafts are coaxially aligned in a direction that the columnar plasma extends within a vacuum chamber. The plural coaxially aligned spline shafts are positioned so that axial gap is formed between the respective male spline sections. The axial gap of the plural male spline sections is positioned at a center of the columnar plasma in the direction that the columnar plasma extends.
摘要:
A propeller shaft includes a first shaft and a second shaft. The first shaft has a torque transmission face in which a plurality of fine grooves extending in a first direction (face width direction) is formed. The second spline shaft is coupled to the first spline shaft so as to be movable relative to the first spline shaft in the axial direction of the first spline shaft, and has a torque transmission face in which a plurality of second fine grooves extending in a second direction that crosses the first direction is formed.
摘要:
A plurality of microscopic grooves are created on the surface of the teeth of planetary gears, and thus, irregular unevenness is created. This irregular unevenness includes a plurality of first microscopic grooves which function as lubricant grooves and a plurality of second microscopic grooves which are shallower than the first microscopic grooves.