JPS56141924A - Fabrication of master model for press mold - Google Patents

Fabrication of master model for press mold

Info

Publication number
JPS56141924A
JPS56141924A JP4392880A JP4392880A JPS56141924A JP S56141924 A JPS56141924 A JP S56141924A JP 4392880 A JP4392880 A JP 4392880A JP 4392880 A JP4392880 A JP 4392880A JP S56141924 A JPS56141924 A JP S56141924A
Authority
JP
Japan
Prior art keywords
master model
piece
gypsum
mold
female mold
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
JP4392880A
Other languages
Japanese (ja)
Inventor
Yoshio Shindo
Yoshio Yamada
Sakae Misawa
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP4392880A priority Critical patent/JPS56141924A/en
Publication of JPS56141924A publication Critical patent/JPS56141924A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To enable to fabricate a master model in a short time in the fabrication of a master model for a press mold with anticipation of spring back by eliminating a work of scraping off a gypsum part.
CONSTITUTION: A female mold 7 is prepared with synthetic resin from a gypsum model 5 of a front fender 1 (shown by chain lines) including a flange part 2, for example. The female mold 7 is constituted of a main body 9 provided with a frame 8 and a loose piece 10. After removing the piece 10, a pad 20 is applied to the body 9 with a volume of gypsum equivalent H to spring back. Then the piece 10 is attached to the body 9 and further sealed with a cover 21 as shown by chain lines, then the first material 22 is poured into it from an arrow mark N and hardened. Next the pad 20 being removed, a clearance is formed between body 9 and material 22 and the material 22 is let to rotate around K as a rotating center, forming a clearance 23 between the piece 10 and material 20. The second material 24 is poured into the clearance 23 and hardened. This female mold 7 becomes a master model of a female mold. A male mold 25 prepared by using a gypsum part 27 is used as a master model of a male mold.
COPYRIGHT: (C)1981,JPO&Japio
JP4392880A 1980-04-02 1980-04-02 Fabrication of master model for press mold Pending JPS56141924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4392880A JPS56141924A (en) 1980-04-02 1980-04-02 Fabrication of master model for press mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4392880A JPS56141924A (en) 1980-04-02 1980-04-02 Fabrication of master model for press mold

Publications (1)

Publication Number Publication Date
JPS56141924A true JPS56141924A (en) 1981-11-05

Family

ID=12677349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4392880A Pending JPS56141924A (en) 1980-04-02 1980-04-02 Fabrication of master model for press mold

Country Status (1)

Country Link
JP (1) JPS56141924A (en)

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