| 摘要 |
<p>A method is disclosed for manufacturing a camshaft (10). The method includes the first step of casting a blank comprising a central shaft, concentric journal bearings (16) and eccentric cam lobes (18), the cam nose region (24,26,28) between the journal bearing (16) at the driven end of the camshaft (10) and the adjacent cam lobe (18) being cast in the same shape as the cam lobe (18) but with smaller dimensions. The cam nose (24,26,28) and the cam surface of the first cam lobe (18) are then ground at the same time as one another by means of a shaped grinding wheel having a cylindrical portion for grinding the cam surface and a narrower contoured portion of larger diameter at one end for grinding the cam nose (24,26,28). <IMAGE></p> |
