Method for grinding glass funnel seal edge and apparatus therefor

摘要

A seal edge grinding method for a glass funnel, wherein a glass funnel seal edge and a grinding wheel are pressed against each other, and the seal edge is ground with the grinding wheel, comprising: moving a glass funnel and a grinding wheel by a certain quantity in an relatively approaching direction by a mobile unit under numerical control to grind a seal edge of the glass funnel with the grinding wheel by the use of feed controlled grinding; and relatively pressing the seal edge and the grinding wheel at a certain pressure by a pressing force of a pressing unit to grind the seal edge with the grinding wheel by the use of pressure controlled grinding after completion of the feed controlled grinding.