摘要:
Hitherto mechanical lever systems and cams were used to effect the necessary relative movements between the workpiece and the grinding disc. In order to attain a higher production rate at improved quality, it is proposed to use electronic means for shaping the profile of a tool. The generating profile is once or several times provided in a convex configuration on the grinding disc. The workpiece is shaped by respectively definable translatory, rotatory and angularly-dependent relative positions between the workpiece and the grinding disc.
摘要:
Apparatus for marking spherical articles in which the marking means extends upwardly from beneath and a concave transparent template having a design scribed therein is held above the article. The article is provided with a follower so that when the article is rotated beneath the template, the follower will track and the marking means will function on the bottom of the spherical article.
摘要:
An engraving apparatus which includes means for supporting a workpiece for motion in mutually-perpendicular directions along its surface to be engraved, and an engraving head arranged for motion perpendicular to such surface enabling engraving contact therewith.
摘要:
Apparatus for sharpening the face cutting edges of an end mill is comprised of a rotatable abrasive wheel and three platforms adapted to provide accurate positioning in a vertical and two lateral directions. The third platform, which is uppermost and tilted in the direction of the abrasive wheel, supports a rotatable turret having a chuck which holds the end mill. The apparatus permits stepwise contact of the land and chamfer zones of the trailing surface associated with each face cutting edge with the abrasive wheel rotating in a plane perpendicular to said trailing surface. The land and chamfer zones are caused to contact the abrasive wheel at two different sites in a lower quadrant of its circular periphery, thereby producing different inclinations of said zones. Because of the tilt of the third platform, both the land and chamfer zones have the same dish angle of between about 0.degree. and 3.degree..