JPS55128341A - Precise forging press - Google Patents

Precise forging press

Info

Publication number
JPS55128341A
JPS55128341A JP3742479A JP3742479A JPS55128341A JP S55128341 A JPS55128341 A JP S55128341A JP 3742479 A JP3742479 A JP 3742479A JP 3742479 A JP3742479 A JP 3742479A JP S55128341 A JPS55128341 A JP S55128341A
Authority
JP
Japan
Prior art keywords
voltage
forging
target voltage
punches
difference
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
JP3742479A
Other languages
Japanese (ja)
Other versions
JPS6125449B2 (en
Inventor
Yuki Kushibe
Toshio Kishigami
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP3742479A priority Critical patent/JPS55128341A/en
Publication of JPS55128341A publication Critical patent/JPS55128341A/en
Publication of JPS6125449B2 publication Critical patent/JPS6125449B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Forging (AREA)

Abstract

PURPOSE: To make the transformation flow condition of forged article constant and to enable to be obtained the product having a good dimension accuracy, by changing the punch position to voltage and comparing with the voltage from target voltage generation apparatus and then, controlling the movement of the punch in forging.
CONSTITUTION: Voltage of the potentiometers 7a, 7b indicating the pushing amount of the upper and lower punches 4, 5 in metal mold, is compared with the target voltage from the target voltage generating apparatus 23 at the X1, X2 parts. Difference of the above voltage is amplified by the amplifiers 21a, 21b and is inputted in the servo valves 22a, 22b. The upper and lower auxiliary rams 7, 8 are driven by oil pressure respectively so as to be eliminated the difference and the punches 4, 5 are controlled according to the target voltage. On this occasion, outline of the template 24 is made suitable from forging start position to finish position and movements of the punches 4, 5 are able to control extending over the whole process of forging by moving in forging process.
COPYRIGHT: (C)1980,JPO&Japio
JP3742479A 1979-03-29 1979-03-29 Precise forging press Granted JPS55128341A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3742479A JPS55128341A (en) 1979-03-29 1979-03-29 Precise forging press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3742479A JPS55128341A (en) 1979-03-29 1979-03-29 Precise forging press

Publications (2)

Publication Number Publication Date
JPS55128341A true JPS55128341A (en) 1980-10-04
JPS6125449B2 JPS6125449B2 (en) 1986-06-16

Family

ID=12497129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3742479A Granted JPS55128341A (en) 1979-03-29 1979-03-29 Precise forging press

Country Status (1)

Country Link
JP (1) JPS55128341A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59130642A (en) * 1983-01-14 1984-07-27 Koyo Seiko Co Ltd Hydraulically driven closed forging machine
JPH0490142U (en) * 1991-04-03 1992-08-06
US6349582B2 (en) * 1998-05-06 2002-02-26 Komatsu, Ltd. Die system for full enclosed die forging
US20110192210A1 (en) * 2004-09-08 2011-08-11 Nobuyoshi Yamashita Shaft member for fluid lubrication bearing apparatuses and a method for producing the same
CN102974732A (en) * 2012-12-11 2013-03-20 阎善武 Forged hydraulic press and method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59130642A (en) * 1983-01-14 1984-07-27 Koyo Seiko Co Ltd Hydraulically driven closed forging machine
JPH0490142U (en) * 1991-04-03 1992-08-06
US6349582B2 (en) * 1998-05-06 2002-02-26 Komatsu, Ltd. Die system for full enclosed die forging
US20110192210A1 (en) * 2004-09-08 2011-08-11 Nobuyoshi Yamashita Shaft member for fluid lubrication bearing apparatuses and a method for producing the same
US8387246B2 (en) * 2004-09-08 2013-03-05 Ntn Corporation Shaft member for fluid lubrication bearing apparatuses and a method for producing the same
CN102974732A (en) * 2012-12-11 2013-03-20 阎善武 Forged hydraulic press and method

Also Published As

Publication number Publication date
JPS6125449B2 (en) 1986-06-16

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