| 摘要 |
PROBLEM TO BE SOLVED: To provide a lead screw for a linear actuator surely preventing even a little drift of an origin position due to resin filled in a metal pipe even if atmospheric temperature gets high and precisely performing linear movement by rotation of a stepping motor, and a method for manufacturing the same. SOLUTION: The lead screw 10 for the linear actuator is provided with the metal pipe 11 having spiral projection 13 formed on an outer circumference thereof by resin molding and a ball 16 for a pivot bearing welded on an end part of the metal pipe 11. |
