JPS566751A - Press-forming method of rack of rack pinion type steering device - Google Patents
Press-forming method of rack of rack pinion type steering deviceInfo
- Publication number
- JPS566751A JPS566751A JP8127779A JP8127779A JPS566751A JP S566751 A JPS566751 A JP S566751A JP 8127779 A JP8127779 A JP 8127779A JP 8127779 A JP8127779 A JP 8127779A JP S566751 A JPS566751 A JP S566751A
- Authority
- JP
- Japan
- Prior art keywords
- rack
- irregular shape
- shaft part
- blank
- press
- 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
Links
Landscapes
- Forging (AREA)
- Gears, Cams (AREA)
Abstract
PURPOSE: To form rack tooth profiles free from formation of any burr in the face width direction by placing a bar-form blank provided with an irregular shape shaft part in the U-shaped groove of a lower die to restrain its plastic deformation and pressing the small arc face of the irregular shape shaft part by an upper die provided with rack teeth.
CONSTITUTION: A bar-form blank 1 is formed by an irregular shape shaft part 2 and cylindrical shaft end parts 3, 4 adjacent to both sides thereof. The irregular shape shaft part 2 is formed by a large arc 5, a small arc 6 and chords 7, 8 of an equal length. This blank 1 is placed in the U-shape groove of a lower die 9. The two shaft end parts 3, 4 are restrained by the fixing blocks 13, 14 of restraining members 10, 11 and blank holders 15, 16 to supress the expansion in the radial direction at the plastic deformation. Thence, an upper die 12 provided with rack teeth on its bottom surface is lowered to press the small arc 6 surface of the irregular shape shaft part 2 of the blank 1, whereby the rack tooth profiles are press- formed on the small arc 6 face side. All the tooth profiles of the rack are obtained in desired shapes by this method.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8127779A JPS5831257B2 (en) | 1979-06-29 | 1979-06-29 | Press molding method for rack of rack and pinion steering device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8127779A JPS5831257B2 (en) | 1979-06-29 | 1979-06-29 | Press molding method for rack of rack and pinion steering device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS566751A true JPS566751A (en) | 1981-01-23 |
JPS5831257B2 JPS5831257B2 (en) | 1983-07-05 |
Family
ID=13741867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8127779A Expired JPS5831257B2 (en) | 1979-06-29 | 1979-06-29 | Press molding method for rack of rack and pinion steering device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5831257B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992020475A1 (en) * | 1991-05-16 | 1992-11-26 | Aeroquip Corporation | Precision forming apparatus, method and article |
KR100563597B1 (en) * | 1998-08-29 | 2006-03-22 | 젯트에프 랭크씨스템 게엠베하 | Method for producing a gear rack, and a stamping device for carrying out the method |
JP2015010685A (en) * | 2013-07-01 | 2015-01-19 | 株式会社ジェイテクト | Blank and method of manufacturing rack shaft using blank |
JP2015009267A (en) * | 2013-07-01 | 2015-01-19 | 株式会社ジェイテクト | Manufacturing apparatus and manufacturing method for rack shaft |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08155575A (en) * | 1994-11-30 | 1996-06-18 | Showa:Kk | Manufacture of rack shaft |
JPH08174126A (en) * | 1994-12-27 | 1996-07-09 | Showa:Kk | Device for manufacturing rack shaft |
-
1979
- 1979-06-29 JP JP8127779A patent/JPS5831257B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992020475A1 (en) * | 1991-05-16 | 1992-11-26 | Aeroquip Corporation | Precision forming apparatus, method and article |
US5493888A (en) * | 1991-05-16 | 1996-02-27 | Aeroquip Corporation | Precision forming apparatus, method and article |
KR100563597B1 (en) * | 1998-08-29 | 2006-03-22 | 젯트에프 랭크씨스템 게엠베하 | Method for producing a gear rack, and a stamping device for carrying out the method |
JP2015010685A (en) * | 2013-07-01 | 2015-01-19 | 株式会社ジェイテクト | Blank and method of manufacturing rack shaft using blank |
JP2015009267A (en) * | 2013-07-01 | 2015-01-19 | 株式会社ジェイテクト | Manufacturing apparatus and manufacturing method for rack shaft |
Also Published As
Publication number | Publication date |
---|---|
JPS5831257B2 (en) | 1983-07-05 |
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