| 摘要 |
<p>The present invention relates to a precision machine centre, in particular for grinding thermal engine valve seats, according to that described in European Patent EP-B-0022796. …<??>According to the invention, the pilot rod (11) comprises various annular housings (11a) in which are fitted respectively various rings (13) which are elastically deformable in the radial direction. …<??>The invention applies to all types of machining centres requiring the presence of a pilot rod. …<IMAGE>… </p> |
