PRODUCTION METHOD OF PISTON FOR COMPRESSOR

A method for producing a hollow piston for compressor by coupling a piston top side member and a rotation preventing portion side member where a rotation preventing portion and a cylindrical portion are formed integrally. When the rotation preventing portion side member is formed, an intermediate ma...

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Hauptverfasser: SAKO, YUKIO, OOTSUKI, YOSHITAKA, KUROKAWA, YUUSUKE
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Sprache:eng ; fre ; ger
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creator SAKO, YUKIO
OOTSUKI, YOSHITAKA
KUROKAWA, YUUSUKE
description A method for producing a hollow piston for compressor by coupling a piston top side member and a rotation preventing portion side member where a rotation preventing portion and a cylindrical portion are formed integrally. When the rotation preventing portion side member is formed, an intermediate material for forging the rotation preventing portion side member is formed, the cylindrical portion of the rotation preventing portion side member is forged in a uniaxial direction by molding for pushing the cylindrical portion rearward in a punch inserting direction using a punch having a tip portion formed asymmetrically to a piston axis, and a material theft portion is formed to copy the asymmetric profile at the tip of the punch on the rotation preventing portion side bottom of the hollow section for forming the cylindrical portion. A hollow piston can be produced by simple and inexpensive forging and the position of the center of gravity can be brought closer to the axis of the cylindrical portion of the piston.
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When the rotation preventing portion side member is formed, an intermediate material for forging the rotation preventing portion side member is formed, the cylindrical portion of the rotation preventing portion side member is forged in a uniaxial direction by molding for pushing the cylindrical portion rearward in a punch inserting direction using a punch having a tip portion formed asymmetrically to a piston axis, and a material theft portion is formed to copy the asymmetric profile at the tip of the punch on the rotation preventing portion side bottom of the hollow section for forming the cylindrical portion. 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language eng ; fre ; ger
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source esp@cenet
subjects BLASTING
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
HEATING
LIGHTING
MECHANICAL ENGINEERING
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
TECHNICAL SUBJECTS COVERED BY FORMER USPC
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
WEAPONS
title PRODUCTION METHOD OF PISTON FOR COMPRESSOR
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