JPS56154181A - Manufacture of case cover for compressor - Google Patents

Manufacture of case cover for compressor

Info

Publication number
JPS56154181A
JPS56154181A JP4392181A JP4392181A JPS56154181A JP S56154181 A JPS56154181 A JP S56154181A JP 4392181 A JP4392181 A JP 4392181A JP 4392181 A JP4392181 A JP 4392181A JP S56154181 A JPS56154181 A JP S56154181A
Authority
JP
Japan
Prior art keywords
case cover
pressed
packing surface
sheet packing
stages
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4392181A
Other languages
Japanese (ja)
Inventor
Naohiro Yanagisawa
Toshio Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4392181A priority Critical patent/JPS56154181A/en
Publication of JPS56154181A publication Critical patent/JPS56154181A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compressor (AREA)

Abstract

PURPOSE: To reduce the deformation of a sheet packing surface and to enable the reduction in a machine-processing cost, by a method wherein a rolled carbon steel sheet is press-punched into a given shape, bolt holes simultaneously, are perforated by a press punching process, and a sheet packing surface, which is susceptible to deform, is then pressed in stages.
CONSTITUTION: As illustrated in the drawing, a rolled carbon steel sheet blank is formed into an external configuration 10 in a given shape, a given number of bolt holes 11 are perforated in the steel sheet by a press punching process, and a sheet packing surface 12 is then pressed in a stage to form a case cover. A numeral 13 in the drawing represents the part which is pressed in stages. As noted above, a case cover 9 is formed such that, after the external configuration 10 for the case cover and the bolt holes 11 are punched, the sheet packing surface 12, which is susceptible to deform, is pressed in stages. As a result, the sheet packing surface 12 is reduced in deformation, and this reduces a machine-processing cost and enables the sharp reduction in its manufacturing cost.
COPYRIGHT: (C)1981,JPO&Japio
JP4392181A 1981-03-27 1981-03-27 Manufacture of case cover for compressor Pending JPS56154181A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4392181A JPS56154181A (en) 1981-03-27 1981-03-27 Manufacture of case cover for compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4392181A JPS56154181A (en) 1981-03-27 1981-03-27 Manufacture of case cover for compressor

Publications (1)

Publication Number Publication Date
JPS56154181A true JPS56154181A (en) 1981-11-28

Family

ID=12677167

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4392181A Pending JPS56154181A (en) 1981-03-27 1981-03-27 Manufacture of case cover for compressor

Country Status (1)

Country Link
JP (1) JPS56154181A (en)

Similar Documents

Publication Publication Date Title
JPS5550927A (en) Production of semicircular washers with pawls
KR960009006B1 (en) Manufacture of coin
JPS5731417A (en) Deep drawing method
JPS56154181A (en) Manufacture of case cover for compressor
JPS5650743A (en) Method and device of forming shaft with center hole
JPS5574036A (en) Work method of processing electrode part of electron gun
JPS5641032A (en) Hemming method of aluminum or aluminum alloy plate
JPS5570426A (en) Punching die for helical gear
JPS5424388A (en) Punching processing method
JPS5472591A (en) Method of removing chips punched out by punch press
JPS53139283A (en) Method for blanking press material
JPS56126033A (en) Production of blanked core
JPS57210651A (en) Lead frame and manufacture thereof
JPS5725224A (en) Production of watch parts
JPS5671542A (en) Successive die forging method
WO1996011760A3 (en) Method and tools for creating flanged lightening holes in workpieces
JPS56136235A (en) Press working method
JPS54147163A (en) Burring work method for metallic sheet
JPS56168921A (en) Manufacture of washer
JPS5794438A (en) Manufacture for aluminium wheel rim
JPS57109527A (en) Transfer press drawing method
JPS5781908A (en) Rolling method with inclined roll
JPS54112073A (en) Strain removal method for filter sheet
JPS5341879A (en) Method of preventing scum from rising in press work
JPS5447055A (en) Friction-type-connecting-device rotor and its manufacturing method