JPS5597834A - Method and apparatus for producing forging having long hollow shaft - Google Patents

Method and apparatus for producing forging having long hollow shaft

Info

Publication number
JPS5597834A
JPS5597834A JP630679A JP630679A JPS5597834A JP S5597834 A JPS5597834 A JP S5597834A JP 630679 A JP630679 A JP 630679A JP 630679 A JP630679 A JP 630679A JP S5597834 A JPS5597834 A JP S5597834A
Authority
JP
Japan
Prior art keywords
shaft part
forging
forged
press
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.)
Pending
Application number
JP630679A
Other languages
Japanese (ja)
Inventor
Yoshiro Osawa
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.)
OSAWA YOSHIROU
Original Assignee
OSAWA YOSHIROU
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 OSAWA YOSHIROU filed Critical OSAWA YOSHIROU
Priority to JP630679A priority Critical patent/JPS5597834A/en
Publication of JPS5597834A publication Critical patent/JPS5597834A/en
Pending legal-status Critical Current

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  • Forging (AREA)

Abstract

PURPOSE: To realize production of captioned forging in wide range of shapes, having small deviation of wall thickness, by using jointly forging machines having large load and large energy respectively, and locally forming by die forging and extrusion process.
CONSTITUTION: To fabricate rear axle housing end or the like of a truck, a bar steel is cut in process (a). In process (b), the shaft part is roll-forged by means of air drop hammer, and the entire body is die-forged, then the shaft part is roughly formed to form with draft, while the other part is formed in the final shape. In process (c), the outer burr of the flange part is blanked out by a press, and the shaft part scale is removed in process (d) and backward extrusion is performed by a hydraulic press to make the shaft part hollow, thus eliminating the outer circumference draft. In process (e), the excess metal in the hole bottom is blanked out by a press to finish the product. Meanwhile, before the backward extrusion, the intermediate ram with pump guide die used also as stripper is operated to coin the forged recess part, and the pump is pushed into the shaft part while maintaining the concentricity of the pump guide hole and product outer circumference.
COPYRIGHT: (C)1980,JPO&Japio
JP630679A 1979-01-22 1979-01-22 Method and apparatus for producing forging having long hollow shaft Pending JPS5597834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP630679A JPS5597834A (en) 1979-01-22 1979-01-22 Method and apparatus for producing forging having long hollow shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP630679A JPS5597834A (en) 1979-01-22 1979-01-22 Method and apparatus for producing forging having long hollow shaft

Publications (1)

Publication Number Publication Date
JPS5597834A true JPS5597834A (en) 1980-07-25

Family

ID=11634679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP630679A Pending JPS5597834A (en) 1979-01-22 1979-01-22 Method and apparatus for producing forging having long hollow shaft

Country Status (1)

Country Link
JP (1) JPS5597834A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382324A (en) * 1979-12-13 1983-05-10 Mannesmann Aktiengesellschaft Method of making a light-weight, two-wheel set
US4932251A (en) * 1987-12-22 1990-06-12 Miyamatool Kabushikikaisha Method of producing a core for a fuel injector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382324A (en) * 1979-12-13 1983-05-10 Mannesmann Aktiengesellschaft Method of making a light-weight, two-wheel set
US4932251A (en) * 1987-12-22 1990-06-12 Miyamatool Kabushikikaisha Method of producing a core for a fuel injector

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