JPS5659556A - Forging method of parts having undercut - Google Patents
Forging method of parts having undercutInfo
- Publication number
- JPS5659556A JPS5659556A JP13361179A JP13361179A JPS5659556A JP S5659556 A JPS5659556 A JP S5659556A JP 13361179 A JP13361179 A JP 13361179A JP 13361179 A JP13361179 A JP 13361179A JP S5659556 A JPS5659556 A JP S5659556A
- Authority
- JP
- Japan
- Prior art keywords
- recess
- cam piece
- inside surface
- predetermined shape
- punch
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/12—Forming profiles on internal or external surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
- B21K1/765—Outer elements of coupling members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
PURPOSE:To expand and contract the split end parts of a cam piece and forge the same to an undercut part of a predetermined shape by the impact thereof by making a half-finished product having a recess smaller than a predetermined shape, making the cam piece face the recess then vertically moving the punch of the inside surface. CONSTITUTION:A semi-finished product 1 provided with a recess 8 having an inside surface 7 which is smaller than a predetermined shape and is approximately staight is put into the recess 12 of a die 11. A cam piece 26 having an outside surface 30 of approximately the same shape as that of the spherical inside surface of the product is inserted into the recess 8. A punch 17 is lowered by lowering a press slide 16, and the cam piece 26 is expanded outward by the downward truncated hexagonal cone face 25 of the end part 17a thereof so that the outside surface 30 thereof makes press-contact with the inside surface 7 of the semifinished product. In this way, the outside surface 30 of the cam piece 26 is expanded and contracted by the vertical movement of the punch 17, and the inside surface 7 of the semifinished product is forged to the undercut of a predetermined shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54133611A JPS5852729B2 (en) | 1979-10-18 | 1979-10-18 | Method for forging parts with undercuts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54133611A JPS5852729B2 (en) | 1979-10-18 | 1979-10-18 | Method for forging parts with undercuts |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5659556A true JPS5659556A (en) | 1981-05-23 |
JPS5852729B2 JPS5852729B2 (en) | 1983-11-25 |
Family
ID=15108848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54133611A Expired JPS5852729B2 (en) | 1979-10-18 | 1979-10-18 | Method for forging parts with undercuts |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5852729B2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2526687A1 (en) * | 1982-05-13 | 1983-11-18 | Luchaire Sa | TOOL FOR FORMING AND CALIBRATION IN PARTICULAR FOR BOWLS OF HOMOCINETIC JOINTS |
JPS59147733A (en) * | 1983-02-14 | 1984-08-24 | Goushiyuu Tanzou Kogyosho:Kk | Forging device |
US4843864A (en) * | 1987-04-10 | 1989-07-04 | Lohr & Bromkamp Gmbh | Press tooling for manufacturing constant velocity ratio universal joint members |
FR2649024A1 (en) * | 1989-07-03 | 1991-01-04 | Peugeot | Method of manufacturing a component having a partially spherical internal surface and an open end |
CN103447445A (en) * | 2013-09-20 | 2013-12-18 | 江苏海宇机械有限公司 | Cold forging finishing punch for inner cavities of finish-forge pieces of outer spherical cages |
CN106111863A (en) * | 2016-07-11 | 2016-11-16 | 上海纳铁福传动系统有限公司 | The processing method of a kind of forging and forging mold thereof |
CN107584064A (en) * | 2017-10-25 | 2018-01-16 | 江苏理研科技股份有限公司 | A kind of distensible drift in end |
CN107639196A (en) * | 2017-10-25 | 2018-01-30 | 江苏理研科技股份有限公司 | A kind of out star wheel forging finishing mold |
CN107838350A (en) * | 2017-10-25 | 2018-03-27 | 江苏理研科技股份有限公司 | A kind of forming method of out star wheel |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3617693B2 (en) * | 1994-07-21 | 2005-02-09 | 株式会社デンソー | Method of manufacturing fuel injection device component having undercut |
-
1979
- 1979-10-18 JP JP54133611A patent/JPS5852729B2/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2526687A1 (en) * | 1982-05-13 | 1983-11-18 | Luchaire Sa | TOOL FOR FORMING AND CALIBRATION IN PARTICULAR FOR BOWLS OF HOMOCINETIC JOINTS |
EP0094875A1 (en) * | 1982-05-13 | 1983-11-23 | Luchaire S.A. | Forming and calibrating tool, especially for bowl-shaped journal sockets of homokinetic universal joints |
JPS59147733A (en) * | 1983-02-14 | 1984-08-24 | Goushiyuu Tanzou Kogyosho:Kk | Forging device |
US4843864A (en) * | 1987-04-10 | 1989-07-04 | Lohr & Bromkamp Gmbh | Press tooling for manufacturing constant velocity ratio universal joint members |
FR2649024A1 (en) * | 1989-07-03 | 1991-01-04 | Peugeot | Method of manufacturing a component having a partially spherical internal surface and an open end |
CN103447445A (en) * | 2013-09-20 | 2013-12-18 | 江苏海宇机械有限公司 | Cold forging finishing punch for inner cavities of finish-forge pieces of outer spherical cages |
CN106111863A (en) * | 2016-07-11 | 2016-11-16 | 上海纳铁福传动系统有限公司 | The processing method of a kind of forging and forging mold thereof |
CN107584064A (en) * | 2017-10-25 | 2018-01-16 | 江苏理研科技股份有限公司 | A kind of distensible drift in end |
CN107639196A (en) * | 2017-10-25 | 2018-01-30 | 江苏理研科技股份有限公司 | A kind of out star wheel forging finishing mold |
CN107838350A (en) * | 2017-10-25 | 2018-03-27 | 江苏理研科技股份有限公司 | A kind of forming method of out star wheel |
Also Published As
Publication number | Publication date |
---|---|
JPS5852729B2 (en) | 1983-11-25 |
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