HYDRAULIC HOLE OPENING MACHINE

The utility model discloses a hydraulic hole opening machine which is a hand-operated opening machine, and which can open a hole on a metal plate by a hydraulic meniscoid film. Because two sealed grooved rings are arranged in a hand-operated plunger pump, a polytetrafluoroethylene retaining ring is...

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Bibliographic Details
Main Author MA JILIAN
Format Patent
LanguageEnglish
Published 04.10.1989
Edition4
Subjects
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
TRANSPORTING
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Summary:The utility model discloses a hydraulic hole opening machine which is a hand-operated opening machine, and which can open a hole on a metal plate by a hydraulic meniscoid film. Because two sealed grooved rings are arranged in a hand-operated plunger pump, a polytetrafluoroethylene retaining ring is also arranged in the sealed grooved ring besides an O-shaped ring, the working pressure of the oil cylinder is high, and the large hole can be conveniently opened on the steel plate.
Bibliography:Application Number: CN1989203662U