| 摘要 |
<p>The invention relates to a device for dressing machinetoolshaving straight of spiral grooves by means of a positioning headsupplied with a meshing pin in one of the grooves which is fittedbefore the grinding wheel in the direction of the feeding. Inorder that the dressed tool is sharpened along its entire length apositioning head (1) is used with two guiding pins (2, 3) thefirst guiding pin (2) pases before the grinding wheel (8) beforeentering the zone of the groove outlet or in a two-way free groovebefore its comes out of it, it is retrieved backwards, and thesecond, guiding pin (3) fix connected to the positioning head (1)gets along after the grinding wheel (8) and after the removal ofthe first pin (2) from the groove takes up the guiding of the tailspindle of the spindle stock of the tool.5 claims, 6 figures</p> |
