Method of milling ball races and side milling cutter for ball races
AssigneeSandvik Intellectual Property AB
InventorStefan Scherbarth
Life of this patent
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Abstract
The present invention concerns a method of milling ball races which are of an approximately elliptical profile which has a first semi-axis extending substantially perpendicularly to the base of the ball race and a second semi-axis extending perpendicularly to the first semi-axis and perpendicularly to the longitudinal direction of the ball race, wherein a side milling cutter is used to produce the ball race, the peripheral cutting edges of which produce the elliptical profile of the ball race, wherein the cutting edges of the side milling cutter in a section containing the axis of the milling cutter are also of an elliptical profile whose first semi-axis extends perpendicularly to the milling cutter axis and whose second semi-axis extends parallel to the milling cutter axis.
Claims13
A method of milling ball races which are of an approximately elliptical profile which has a first semi-axis extending substantially perpendicularly to the base of the ball race and a second semi-axis extending perpendicularly to the first semi-axis and perpendicularly to the longitudinal direction of the ball race, wherein a side milling cutter is used to produce the ball race, the peripheral cutting edges of which produce the elliptical profile of the ball race, wherein the cutting edges of the side milling cutter in a section containing the axis of the milling cutter are also of an elliptical profile whose first semi-axis extends perpendicularly to the milling cutter axis and whose second semi-axis extends parallel to the milling cutter axis, wherein the ratio of the second semi-axis relative to the first semi-axis of the cutting edges is greater than the ratio of the second semi-axis relative to the first semi-axis in the case of the ball race to be produced, wherein the axis of the side milling cutter in projection on to the portion of the ball race, disposed with the cutting edges of the milling cutter, includes a setting angle different from 0° with the second semi-axis of the ball race profile.
A ball race milling cutter in the form of a side milling cutter with cutting edges arranged at a disk periphery, which are of an approximately elliptical profile, wherein the ratio of the semi-axis, parallel to the milling cutter axis, of the profile of the cutting edges relative to the semi-axis, extending perpendicularly to the milling cutter axis, of the profile of the cutting edges is between 1.06 and 3.5.
Dependencies are inferred from the claim text.