PISTON MANUFACTURING METHOD

To provide a piston manufacturing method capable of mass manufacturing pistons whose space parts are filled with particles and which have an aggregation restraining structure.SOLUTION: In a piston manufacturing method, first plural blocks 101-114 having a three-dimensional shape made by solidifying...

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Main Authors NAKABASHI HIROKAZU, UCHIDA HIROYASU, ICHIKAWA KAZUO, SAKAI HIROYUKI, SAKAKI TAMIJI, NAKANO KOICHI, NOO YOSHIHISA, HONDA YUICHI
Format Patent
LanguageEnglish
Japanese
Published 02.04.2024
Subjects
ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
BLASTING
COMBUSTION ENGINES
CYLINDERS
CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
PISTONS
SEALINGS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:To provide a piston manufacturing method capable of mass manufacturing pistons whose space parts are filled with particles and which have an aggregation restraining structure.SOLUTION: In a piston manufacturing method, first plural blocks 101-114 having a three-dimensional shape made by solidifying a mixture of water and a particulate matter and having grooves 121-123 concaved on sides are prepared. The plural blocks 101-114 are overlaid on each other, so as to prepare a core 100 having a first through hole 131, a second through hole 132 and a third through hole 133. The core 100 is arranged inside a cavity and clamped. Molten metal is injected in the cavity and the first through hole 131, the second through hole 132 and the third through hole 133 of the core 100. By solidifying the molten metal, a piston body 20 having the space part 30 is formed. At the same time, a first beam member 51, a second beam member 52 and a column member 52 are formed. Finally, water is discharged from the space part 30 of the piston body 20.SELECTED DRAWING: Figure 7 【課題】空間部内部に粒子が充填されるとともに凝集抑制構造を備えたピストンを大量生産することが可能なピストンの製造方法の提供を目的とする。【解決手段】ピストン製造方法では、まず、水と粉粒体との混合物を固化させた立体形状であって辺を凹ませた溝１２１～１２３を有する複数のブロック１０１～１１４を準備する。複数のブロック１０１～１１４を互いに重ね合わせて第１貫通孔１３１、第２貫通孔１３２および第３貫通孔１３３を有する中子１００を準備する。キャビティ内部に中子１００を配置して型締めする。キャビティならびに中子１００の第１貫通孔１３１、第２貫通孔１３２および第３貫通孔１３３に溶湯を注入する。溶湯を凝固させることにより、空間部３０を有するピストン本体２０を形成し、それとともに、第１梁部材５１、第２梁部材５２および柱部材５２を形成する。最後に、ピストン本体２０の空間部３０から水を排出する。【選択図】図７
Bibliography:Application Number: JP20220148948