JPS558338A - Production of blank for inner and outer race for bearing - Google Patents
Production of blank for inner and outer race for bearingInfo
- Publication number
- JPS558338A JPS558338A JP8054878A JP8054878A JPS558338A JP S558338 A JPS558338 A JP S558338A JP 8054878 A JP8054878 A JP 8054878A JP 8054878 A JP8054878 A JP 8054878A JP S558338 A JPS558338 A JP S558338A
- Authority
- JP
- Japan
- Prior art keywords
- blank
- race
- truncated cone
- cylindrical
- inner race
- 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
Links
Landscapes
- Forging (AREA)
Abstract
PURPOSE: To produce blanks for cylindrical inner and outer races of good accuracy by expanding the inner circumferential side part of truncated cone form blanks to the outer side and narrowing the outside circumferential side part to the inner side thereby forming these to cylindrical form.
CONSTITUTION: A blank 1 cut from a heated round bar is formed to a flat form blank 2 in the first process E. In the second process F, the cup-form blank 6 integrated with a cylindrical blank 3 for outer race, a blank 4 of truncated cone form in axial section for inner race and a plane-form thirling part 5 is formed. In the third process G, the cylindrical outer race blank 3, truncated cone form blank 4 for inner race and thirling part 5 are separated to individual bodies. In the fourth process, the inside circumferential side part 7 is expanded to the outer side and the outside circumferential side part 8 is narrowed to the inner side. The truncated cone form blank 4 for inner race is formed to a tubular blank 13 for inner race is formed to a tubular blank 13 for inner race by a center punch 9, outer punch 10, die 11 and knock-out 12. The blank 13 for inner race and blank 3 for outer race undergo annealing, machining, heat treating and grinding, whereby the inner and outer races for ball bearings, etc. are produced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8054878A JPS558338A (en) | 1978-07-04 | 1978-07-04 | Production of blank for inner and outer race for bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8054878A JPS558338A (en) | 1978-07-04 | 1978-07-04 | Production of blank for inner and outer race for bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS558338A true JPS558338A (en) | 1980-01-21 |
Family
ID=13721389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8054878A Pending JPS558338A (en) | 1978-07-04 | 1978-07-04 | Production of blank for inner and outer race for bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS558338A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58120032U (en) * | 1982-02-06 | 1983-08-16 | 段谷産業株式会社 | Three-dimensional pattern decorative board |
| KR100399591B1 (en) * | 2000-03-22 | 2003-09-26 | 주식회사 대흥알앤티 | Method of making case of strut bearing using boards |
| US8197949B2 (en) * | 2006-10-03 | 2012-06-12 | Seiko Instruments Inc. | Blank for a ring member of a bearing, manufacturing method for the same, manufacturing method for a ring member of a bearing, and bearing |
-
1978
- 1978-07-04 JP JP8054878A patent/JPS558338A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58120032U (en) * | 1982-02-06 | 1983-08-16 | 段谷産業株式会社 | Three-dimensional pattern decorative board |
| JPH0230320Y2 (en) * | 1982-02-06 | 1990-08-15 | ||
| KR100399591B1 (en) * | 2000-03-22 | 2003-09-26 | 주식회사 대흥알앤티 | Method of making case of strut bearing using boards |
| US8197949B2 (en) * | 2006-10-03 | 2012-06-12 | Seiko Instruments Inc. | Blank for a ring member of a bearing, manufacturing method for the same, manufacturing method for a ring member of a bearing, and bearing |
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