Invention Grant
US07168284B2 Method and apparatus for producing hollow rack bar and mandrel used for rack bar production
失效
用于制作机架杆生产的空心齿条和心轴的方法和装置
- Patent Title: Method and apparatus for producing hollow rack bar and mandrel used for rack bar production
- Patent Title (中): 用于制作机架杆生产的空心齿条和心轴的方法和装置
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Application No.: US11235137Application Date: 2005-09-27
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Publication No.: US07168284B2Publication Date: 2007-01-30
- Inventor: Seiji Shiokawa
- Applicant: Seiji Shiokawa
- Applicant Address: JP Tokyo JP Tokyo JP Tokyo
- Assignee: Minako Matsuoka,Hiroshisa Shiokawa,Akimasa Shiokawa
- Current Assignee: Minako Matsuoka,Hiroshisa Shiokawa,Akimasa Shiokawa
- Current Assignee Address: JP Tokyo JP Tokyo JP Tokyo
- Agency: Ditthavong & Mori, P.C.
- Main IPC: B21D39/08
- IPC: B21D39/08

Abstract:
A system for forging a rack bar from a blank pipe. A blank pipe 1 is held between dies 2 and 3. Stockers 7L and 7R are arranged on respective sides of the die set. In the stockers 7L and 7R, left-handed shuttles 6L1, 6L2, 6L3, . . . 6Ln and right-handed shuttles 6R1, 6R2, 6R3 . . . 6Rn are stored. First, a left-handed presser rod 5L inserts the shuttles 6L1 to the blank pipe from the left-handed stocker 7L. Then, a right-handed presser rod 5R inserts the shuttles 6R1 to the blank pipe from the right-handed stocker 7R, causing the shuttles 6L1 to be entrained and returned to the left-handed stocker 7L. Vertical shift movement is alternately executed between the left-handed and right-handed stockers 7L and 7R, so that a shuttle of step-likely increased working height is selected for executing a working process.
Public/Granted literature
- US20060016238A1 Method and apparatus for producing hollow rack bar and mandrel used for rack bar production Public/Granted day:2006-01-26
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