公开(公告)号：US20190250125A1

公开(公告)日：2019-08-15

申请号：US16333258

申请日：2016-09-23

Applicant: Hitachi High-Technologies Corporation

Inventor： Katsuhiro ARITOME ,  Ryusuke KIMURA ,  Motohiro YAMAZAKI ,  Go NAKAJIMA ,  Naomichi KAWASAKI

IPC: G01N27/447 ,  B05C7/08

CPC classification number: G01N27/44782 ,  B01J19/0046 ,  B01L2400/0421 ,  B05C7/08 ,  G01N27/447 ,  G01N27/44743

Abstract: This drive screw device is provided with: a drive screw; a drive unit which causes the drive screw to rotate; a slider which moves along the drive screw by means of the rotation of the drive screw; and an external load which is provided on the drive screw and applies a rotational load to the drive screw. By this means it is possible to provide a drive screw device with which there is little pressure variation even if a frictional force varies.