GB1370700A - Forming transverse corrugations in a tubular blank - Google Patents
Forming transverse corrugations in a tubular blankInfo
- Publication number
- GB1370700A GB1370700A GB1277872A GB1277872A GB1370700A GB 1370700 A GB1370700 A GB 1370700A GB 1277872 A GB1277872 A GB 1277872A GB 1277872 A GB1277872 A GB 1277872A GB 1370700 A GB1370700 A GB 1370700A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mandrel
- blank
- wheels
- segments
- corrugated
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D15/00—Corrugating tubes
- B21D15/04—Corrugating tubes transversely, e.g. helically
- B21D15/06—Corrugating tubes transversely, e.g. helically annularly
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
1370700 Corrugating tubes GENERAL MOTORS Ltd 15 Feb 1973 [18 March 1972] 12778/72 Heading B3E Transverse corrugations are formed in a tubular blank 44, e.g. for a jacket for a collapsible steering shaft on a vehicle, by registering the blank on a collapsible segmental mandrel 10 and passing it through a die assembly 12 comprising a ring of toothed wheels 14 rotatably mounted on a common holder 16 with their axes disposed in a common radial plane, and therafter collap- sing the mandrel to permit removal of the corrugated blank. As shown, the mandrel comprises eight corrugated segments 20 surrounding a plug 22 slidable in a bush 26 in a fixed housing 24, the segments having flanges 32 radially movable in a groove 34 in the housing, and being urged together by a spring retainer 30. The plug has larger and smaller diameter portions 28 and 36, which are alternatively locatable within the segments to impart an extended and a collapsed configuration to the mandrel. Eight wheels 14 are mounted in the holder 16, each registering with a mandrel segment 20, and the wheel teeth have concave crests matching the convex crests on the mandrel segment corrugations 18. Spring ball detents 40 index the wheels prior to engagement of the wheels with the segments when the assembly 12 is moved up over the blank (through the blank may be moved through the assembly). Prior to corrugating, a tubular blank may have its end portions reduced in diameter to provide portions on which bearings or tube extensions are to be fitted, these end portions being connected by shoulders to a central larger diameter portion to be corrugated. The blank is placed over the collapsed mandrel which is then expanded within the central portion. The resulting corrugated tube has longitudinal ribs corresponding to the gaps between adjacent wheels and between adjacent mandrel segments when expanded. The wheels 14 may be movable together radially of the holder during corrugating, e.g. by a cam mechanism, to vary the characteristics of the corrugations.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1277872A GB1370700A (en) | 1972-03-18 | 1972-03-18 | Forming transverse corrugations in a tubular blank |
DE2309215A DE2309215C3 (en) | 1972-03-18 | 1973-02-22 | Device for transversely corrugating the wall of pipes |
AU52544/73A AU462884B2 (en) | 1972-03-18 | 1973-02-23 | Forming transverse corrugations ina tubular blank |
FR7307855A FR2176707B1 (en) | 1972-03-18 | 1973-03-06 | |
US00339198A US3852987A (en) | 1972-03-18 | 1973-03-08 | Forming transverse corrugations in a tubular blank |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1277872A GB1370700A (en) | 1972-03-18 | 1972-03-18 | Forming transverse corrugations in a tubular blank |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1370700A true GB1370700A (en) | 1974-10-16 |
Family
ID=10010948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1277872A Expired GB1370700A (en) | 1972-03-18 | 1972-03-18 | Forming transverse corrugations in a tubular blank |
Country Status (5)
Country | Link |
---|---|
US (1) | US3852987A (en) |
AU (1) | AU462884B2 (en) |
DE (1) | DE2309215C3 (en) |
FR (1) | FR2176707B1 (en) |
GB (1) | GB1370700A (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2617415B1 (en) * | 1987-07-02 | 1991-08-09 | Nacam | METHOD AND DEVICE FOR HAMMERING A WAVE TUBE AND ITS APPLICATION TO TUBES FOR THE AUTOMOTIVE INDUSTRY |
DE19636424A1 (en) * | 1996-09-07 | 1998-03-12 | Audi Ag | Appts to form contours in a hollow profile wall |
DE19710071A1 (en) * | 1997-03-12 | 1998-09-24 | Alsthom Cge Alcatel | Device for ring waves of pipes |
DE10042465C2 (en) * | 2000-08-29 | 2002-08-01 | Vaw Ver Aluminium Werke Ag | Process for deforming tubular hollow bodies made of metal |
DE60219470T2 (en) * | 2001-07-05 | 2007-12-13 | Magna Structural Systems Inc., Aurora | METHOD FOR INCREASING A TUBULAR ROLE |
CN102000734B (en) * | 2009-08-31 | 2014-04-02 | 扬州恒德模具有限公司 | Point punching forming die |
CN102900201B (en) * | 2012-10-22 | 2015-07-08 | 沈阳建筑大学 | Manufacture mold and manufacture method of grouting anchor reinforced bar connection sleeve |
CN109236922B (en) * | 2018-02-05 | 2020-06-30 | 杭州富阳新远新能源有限公司 | Automobile shock absorber of variable friction damper |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US12346A (en) * | 1855-02-06 | Current water-wheel | ||
DE811945C (en) * | 1948-10-01 | 1951-08-23 | Otto Klein | Device for corrugating pipes |
US2736284A (en) * | 1950-09-02 | 1956-02-28 | Walker Mfg Company Of Wisconsi | Muffler shell forming machine |
DE851791C (en) * | 1950-10-14 | 1952-10-09 | Schumag Schumacher Metallwerke | Device for grooving tubular wires u. like |
US2714919A (en) * | 1951-03-20 | 1955-08-09 | John M Johnston | Apparatus and method for forming seamless flexible tubing |
DE1272865B (en) * | 1964-01-31 | 1968-07-18 | Siemens Ag | Device for the continuous production of self-contained grooves on pipes |
-
1972
- 1972-03-18 GB GB1277872A patent/GB1370700A/en not_active Expired
-
1973
- 1973-02-22 DE DE2309215A patent/DE2309215C3/en not_active Expired
- 1973-02-23 AU AU52544/73A patent/AU462884B2/en not_active Expired
- 1973-03-06 FR FR7307855A patent/FR2176707B1/fr not_active Expired
- 1973-03-08 US US00339198A patent/US3852987A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3852987A (en) | 1974-12-10 |
DE2309215B2 (en) | 1974-01-03 |
DE2309215A1 (en) | 1973-10-04 |
FR2176707B1 (en) | 1975-10-31 |
AU5254473A (en) | 1974-08-29 |
DE2309215C3 (en) | 1978-06-29 |
AU462884B2 (en) | 1975-07-10 |
FR2176707A1 (en) | 1973-11-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19930213 |