发明名称 |
HIGH-FREQUENCY INDUCTION-HARDENING APPARATUS FOR RACK BAR |
摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a high-frequency induction-hardening apparatus for a rack bar with which a high accurate hardened quality is obtained by utilizing the induction current to a tooth face and a back face of the rack bar and simultaneously and efficiently heating. <P>SOLUTION: The high-frequency induction-hardening apparatus is provided with: a first electrode means composed of one pair of contacting electrodes contacted with at least the tooth face side of the rack bar; a second electrode means disposed at the back face side of the rack bar; and a high-frequency electric source for supplying the high-frequency current to both the electrode means: and the first electrode means and the second electrode means are connected with the above high-frequency electric source under series-state or parallel-state. The above second electrode means is formed of one pair of contacting electrodes contacted with the back face side of the rack bar or high-frequency induction-hardening coils oppositely disposed at the back face side. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
申请公布号 |
JP2007224319(A) |
申请公布日期 |
2007.09.06 |
申请号 |
JP20060043243 |
申请日期 |
2006.02.21 |
申请人 |
MIYADEN CO LTD |
发明人 |
MIYAZAKI TSUTOMU;SUZUKI EIJI |
分类号 |
C21D9/32;C21D1/09;C21D1/10;H05B6/36 |
主分类号 |
C21D9/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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