Metal Mold Manufacturing Method
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United States of America Patent
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Issued Date -
Aug 13, 2015
app pub date -
Dec 8, 2012
filing date -
Dec 19, 2011
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Abandoned
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Abstract
A metal mold manufacturing method is provided, which is capable of forming a metal mold having a plurality of transfer surfaces with positions of optical axes being different by a lathe at high accuracy. An n-th (n is an integer of 1 to 4) side surface SDn of a material 1 of the metal mold abuts against an X-axis directional reference plane 2b of a jig 2, an (n+1)th side surface (but n=1 when n is 4) of a material 1′ of the metal mold abuts against a Y-axis directional reference plane 2c of the jig 2, and the material 1 of the metal mold is thus fixed to the jig 2. Subsequently, the n-th transfer surface is formed by cutting the material 1′ of the metal mold while rotating the jig 2 and the material 1 of the metal mold together by a lathe. Thereafter, the steps are repeated in a way that raises n by one.
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