MANUFACTURE FOR RACK UNIT HAVING CURVE PART

PURPOSE:To provide a method of manufacturing a rack unit having a curve part with which a driving pinion for running a lift unit or the like driven in a staircase elevator can be smoothly meshed. CONSTITUTION:In a method of manufacturing a rack unit having a curve part 2, it is bent after cutting a...

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Bibliographic Details
Main Author TANAKA TOSHIRO
Format Patent
LanguageEnglish
Published 03.06.1994
Edition5
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GEARING
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MACHINE TOOLS
MAKING GEARS OR TOOTHED RACKS
MECHANICAL ENGINEERING
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
THERMAL INSULATION IN GENERAL
TRANSPORTING
WEAPONS
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Summary:PURPOSE:To provide a method of manufacturing a rack unit having a curve part with which a driving pinion for running a lift unit or the like driven in a staircase elevator can be smoothly meshed. CONSTITUTION:In a method of manufacturing a rack unit having a curve part 2, it is bent after cutting a curve part 3 by setting its reference pitch line position to a minus position in accordance with a radius of curvature of the curve part 2 from a reference pitch line position of a straight line part, in the case of cutting a rack tooth 4 by a cutter of standard tooth profile.
Bibliography:Application Number: JP19920343095