FEED SCREW

PROBLEM TO BE SOLVED: To provide a feed screw which includes a spiral rod having a shape formed by twisting around a major axis as a screw axis, capable of having high positional accuracy, excellent durability, and capable of withstanding a high load. SOLUTION: A spiral groove 9 surface-contacting w...

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Bibliographic Details
Main Authors MATSUMOTO ISAMU, GOTO TSUNEO
Format Patent
LanguageEnglish
Published 04.09.2008
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GEARING
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a feed screw which includes a spiral rod having a shape formed by twisting around a major axis as a screw axis, capable of having high positional accuracy, excellent durability, and capable of withstanding a high load. SOLUTION: A spiral groove 9 surface-contacting with a spiral surface of the spiral rod 5 is provided on a nut 8. A width of the spiral groove 9 has relief widths on both sides of a thickness of material of the spiral rod 5. A cross section of the spiral groove 9 cut on a surface vertical to a rotation axis of the nut 8 is rectangle, and both corner parts of a bottom part of the rectangle cross section have relief grooves 10 with a width larger than twice the relief width. COPYRIGHT: (C)2008,JPO&INPIT
Bibliography:Application Number: JP20070037460