| 摘要 |
PURPOSE:To shorten the grinding time of a valve assembly and perform grinding with high oil-tightness. CONSTITUTION:The side periphery of the valve body 2 of a valve assembly 1 assembled with a valve needle 3 coated with a lapping agent and the valve body 2 is centerless-held by a reference roller 16 and a drive roller 21 in the rated rotating state, the valve assembly 1 is rotated at a high speed, the valve needle 3 in the rotating state is held by a swayably suspended clip 36 to stop the rotation of the valve needle 3, and the valve body 2 and the seat portion of the valve needle 3 are ground together. |
