Document Type and Number:
Japanese Patent JPS5138272
Kind Code:
A
Abstract:
A progressive stage forging machine is provided for forming an article in stages by means of a plurality of dies and cooperating punches, carried on a ram, wherein more than two forging blows are required to complete the forming of the article. The invention particularly provides a forging machine of the three-blow type having three punches and three cooperating dies, wherein two of the dies are carried on a member to permit alternating changes of position of those two dies, thereby eliminating a transfer mechanism between the two dies and achieving a one hundred percent increase over the production rate of presently available forging machines of the three-blow type.
Inventors:
IMURE BERESU
Application Number:
JP4316275A
Publication Date:
March 30, 1976
Filing Date:
April 09, 1975
Export Citation:
Assignee:
IMURE BERESU
International Classes:
B21J9/06; B21J13/00; B21J13/08; B21K1/44; B21K1/46; B21K1/48; B21K27/04; B30B1/26; (IPC1-7): B21J9/06; B21K1/44; B30B1/26
Domestic Patent References:
| JPS499836B1 | 1974-03-06 | |||
| JP45029099A | ||||
| JPS4837654A | 1973-06-02 | |||
| JP46040106A |