Title:
METHOD OF MANUFACTURING LEAD SCREW FOR LINEAR ACTUATOR
Document Type and Number:
Japanese Patent JP3962379
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a lead screw for a linear actuator capable of securely preventing the slight deviation of an origin position by resin filled in a metallic pipe even if the ambient temperature is increased to precisely perform the linear motion of a stepping motor by rotation.
SOLUTION: This method of manufacturing the lead screw comprises a step for boring a plurality of holes in the wall body part of the metallic pipe at pre-determined intervals, a step for welding a ball at the end of the metallic pipe, a step for positioning the metallic pipe at a predetermined position in the cavity of a molding die, and a step for resin-molding a thread part by filling a resin material from the outside of a hole row bored in the wall body part of the metallic pipe and filling the resin in the metallic pipe until the resin directly touches the ball.
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Inventors:
Shintake Matsushita
Application Number:
JP2004014077A
Publication Date:
August 22, 2007
Filing Date:
January 22, 2004
Export Citation:
Assignee:
Minebea Co., Ltd.
International Classes:
F16H25/24; B29C45/14; F16H25/20; (IPC1-7): F16H25/24; B29C45/14; F16H25/20
Domestic Patent References:
| JP8118371A | ||||
| JP8186950A | ||||
| JP10320936A | ||||
| JP1295660A |
Attorney, Agent or Firm:
Hiroo Suzuki