JPS57127540A - Manufacture of internal thread having broken part - Google Patents

Manufacture of internal thread having broken part

Info

Publication number
JPS57127540A
JPS57127540A JP1316281A JP1316281A JPS57127540A JP S57127540 A JPS57127540 A JP S57127540A JP 1316281 A JP1316281 A JP 1316281A JP 1316281 A JP1316281 A JP 1316281A JP S57127540 A JPS57127540 A JP S57127540A
Authority
JP
Japan
Prior art keywords
hole
press forming
flat part
internal thread
die
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.)
Granted
Application number
JP1316281A
Other languages
Japanese (ja)
Other versions
JPS58935B2 (en
Inventor
Mitsuhide Majima
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP1316281A priority Critical patent/JPS58935B2/en
Publication of JPS57127540A publication Critical patent/JPS57127540A/en
Publication of JPS58935B2 publication Critical patent/JPS58935B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/56—Making machine elements screw-threaded elements

Abstract

PURPOSE:To manufacture internal threads having broken part in quantities at high efficiency solely by plastic working by uniting two members in a body at thin parts having small outer diameter. CONSTITUTION:A flat part 1' which is to become the first member is made beating the end of material with a punch 121 in a press forming die 111 and a convex part 2' which is to become the second member is made by press forming separately. Next, a hole 5' which is to be a screw hole is formed on the flat part 1' in a press forming die 112 to complete the material as the first member. After changing the direction, the convex part 2' is beaten with a punch 123 in a press forming die 113 to form a flat part 2'' corresponding in size to the outer diameter of the second member 2. Then, a boundary 4 having zero clearance is formed between the flat part 2'' and the first member. A hole 5' which is to be a screw hole is formed on the flat part 2'' of the semifinished product in a solid die 114 to complete it as the second member 2. Next, excess metal 5'' is blanked by a piercing die of a press forming die 115 and a punch 125 and the hole is penetrated through the two members 1, 2. A desired internal thread product is obtained by forming internal thread 5 in the hole 5' in succeeding stage.
JP1316281A 1981-01-31 1981-01-31 Method for manufacturing female threaded products with broken points Expired JPS58935B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1316281A JPS58935B2 (en) 1981-01-31 1981-01-31 Method for manufacturing female threaded products with broken points

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1316281A JPS58935B2 (en) 1981-01-31 1981-01-31 Method for manufacturing female threaded products with broken points

Publications (2)

Publication Number Publication Date
JPS57127540A true JPS57127540A (en) 1982-08-07
JPS58935B2 JPS58935B2 (en) 1983-01-08

Family

ID=11825469

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1316281A Expired JPS58935B2 (en) 1981-01-31 1981-01-31 Method for manufacturing female threaded products with broken points

Country Status (1)

Country Link
JP (1) JPS58935B2 (en)

Also Published As

Publication number Publication date
JPS58935B2 (en) 1983-01-08

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