US Patent 9902030 Vibration stop device

A method of stopping vibration of a columnar work during processing thereof, includes the steps of providing a cylindrical columnar work having an outer circumferential surface divided into a non-processed region and at least two recessed processed regions with a circumferential cross-section forming a perimeter including two spaced apart non-processed perimetric segments separated by two spaced apart processed perimetric segments, providing a vibration stop including only two holding parts having arc shaped surfaces, locating the columnar work between the arc shaped surfaces of the holding parts adjacent the perimeter with each processed region radially inward, orienting the columnar work such that each arc shaped surface contacts the outer circumferential surface at both spaced apart non-processed perimetric segments with one processed perimetric segment located therebetween, each arc shaped surface, and holding the columnar work with the holding parts to prevent vibration of the columnar work during processing of the columnar work.