GB845241A - Improvements in or relating to waveguides and methods of bending waveguides - Google Patents

Improvements in or relating to waveguides and methods of bending waveguides

Info

Publication number
GB845241A
GB845241A GB37542/57A GB3754257A GB845241A GB 845241 A GB845241 A GB 845241A GB 37542/57 A GB37542/57 A GB 37542/57A GB 3754257 A GB3754257 A GB 3754257A GB 845241 A GB845241 A GB 845241A
Authority
GB
United Kingdom
Prior art keywords
waveguide
mandrel
bent
strips
members
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
Application number
GB37542/57A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RONALD IRWINE GILL
General Electric Co PLC
Original Assignee
RONALD IRWINE GILL
General Electric Co PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by RONALD IRWINE GILL, General Electric Co PLC filed Critical RONALD IRWINE GILL
Priority to GB37542/57A priority Critical patent/GB845241A/en
Priority to US776853A priority patent/US3016081A/en
Priority to FR1214431D priority patent/FR1214431A/en
Publication of GB845241A publication Critical patent/GB845241A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
    • H01P11/001—Manufacturing waveguides or transmission lines of the waveguide type
    • H01P11/002—Manufacturing hollow waveguides
    • 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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Waveguides (AREA)

Abstract

845,241. Making waveguides; angular bending; mandrels. GENERAL ELECTRIC CO. Ltd., and GILL, R. I. Nov. 27, 1958 [Dec. 2, 1957], No. 37542/57. Classes 83 (2) and 83 (4). A method of bending a waveguide comprises inserting a mandrel from one end of the waveguide substantially to fill a first straight part of the waveguide, said mandrel comprising a stack of substantially flat metal strips slightly less in width than the waveguide, and inserting a member or members from the other end of the waveguide substantially to fill a second part of the waveguide, the first and second parts together constituting a continuous length of the waveguide and said member or members cooperating with said mandrel in a portion of said waveguide which has a bend in it, then bending the waveguide such that the plane containing all the longitudinal axes of the strips forming the mandrel is unaltered, and then removing the mandrel and the member or members. A waveguide of copper alloy containing 30% zinc is cut to length, deburred, and annealed at 600‹ C. for 15 minutes then quenched in water and dipped in an acid bath. It is then bent as described in Specification 837,462. A mandrel comprising two single outer flat strips 6 and 7 of spring steel surrounding a group of strips 8 doubled back around a bobbin 11 and clamped at 9, is inserted in one end of the bent waveguide 1, the waveguide being lubricated with tallow. Inner ends 13 of the strips 6, 7 and 8 are shaped to fit a bend 3 of the bent waveguide and are notched at 14. Into the other end of the bent waveguide is inserted a rod 16 of rectangular cross-section and having a shoe 17 shaped to the inside of the bend 3. A bar 19, grooved at 22 to receive the rod 16 and formed with a projection 23, is then inserted so that projection 23 fits into the recess 14 in the mandrel. The waveguide is then bent to the shape 24, slightly more than the final shape to allow for spring back. After removal of the mandrel and the members 16 and 19, the waveguide may be stress relieved for one hour at between 250‹ and 270‹ C., allowed to cool and acid dipped. The waveguide may be of aluminium.
GB37542/57A 1957-12-02 1957-12-02 Improvements in or relating to waveguides and methods of bending waveguides Expired GB845241A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB37542/57A GB845241A (en) 1957-12-02 1957-12-02 Improvements in or relating to waveguides and methods of bending waveguides
US776853A US3016081A (en) 1957-12-02 1958-11-28 Waveguides and methods of bending waveguides
FR1214431D FR1214431A (en) 1957-12-02 1958-12-02 Waveguides and their bending process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB37542/57A GB845241A (en) 1957-12-02 1957-12-02 Improvements in or relating to waveguides and methods of bending waveguides

Publications (1)

Publication Number Publication Date
GB845241A true GB845241A (en) 1960-08-17

Family

ID=10397245

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37542/57A Expired GB845241A (en) 1957-12-02 1957-12-02 Improvements in or relating to waveguides and methods of bending waveguides

Country Status (3)

Country Link
US (1) US3016081A (en)
FR (1) FR1214431A (en)
GB (1) GB845241A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000385A (en) * 1977-06-10 1979-01-04 Cables De Lyon Geoffroy Delore Circular wave guide
GB2148758A (en) * 1983-11-02 1985-06-05 Norcros Investments Ltd Bending mandrel
CN106541005A (en) * 2016-10-13 2017-03-29 中车长春轨道客车股份有限公司 For the cavity filling device and its using method of hollow aluminium section bar bending process

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3672202A (en) * 1970-09-15 1972-06-27 Microwave Dev Lab Inc Method of making waveguide bend
FR2189137B1 (en) * 1972-06-21 1974-12-27 Benichou Marcel
IT965396B (en) * 1972-09-18 1974-01-31 Castelli Sas Anonima SYSTEM AND DEVICE FOR AFFECTING THE SECTION BETWEEN THE TUBULAR BODIES DURING A COLD BENDING OPERATION
NL7700383A (en) * 1976-01-20 1977-07-22 Hoechst Ag PROCESS FOR MANUFACTURE OF CURVED PIECES OF TUBE FROM THERMOPLASTIC PLASTIC AND DEVICE FOR THIS PROCESS.
US5586463A (en) * 1995-08-17 1996-12-24 Sheen; Reen-Yuan Pipe bending device
US10442659B2 (en) 2015-06-29 2019-10-15 Otis Elevator Company Electromagnetic brake system for elevator application
CN108906938B (en) * 2018-06-15 2020-08-14 莱诺斯科技（北京）股份有限公司 Magnesium-lithium alloy waveguide tube cold bending forming method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US174608A (en) * 1876-03-07 Improvement in apparatus for bending pipes or tubes
US1324940A (en) * 1919-12-16 theberath
US1370075A (en) * 1919-05-05 1921-03-01 Harriman Nat Bank Of The City Tube-bending apparatus
US1654697A (en) * 1925-10-17 1928-01-03 Adolph Mueller Pipe-bending mandrel
US2117724A (en) * 1936-02-15 1938-05-17 Kirsch Co Apparatus for bending metal tubes and like hollow bodies
US2390274A (en) * 1942-07-25 1945-12-04 Bardwell & Mcalister Pinch type bending roll method and means
US2672224A (en) * 1948-12-08 1954-03-16 Horwitz Leo Luggage and method of making same
US2882951A (en) * 1954-02-26 1959-04-21 Western Electric Co Mandrels for making seamless bends in rectangular tubing
US2825386A (en) * 1954-11-17 1958-03-04 Western Electric Co Universal bending mandrel utilizing connecting cable

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000385A (en) * 1977-06-10 1979-01-04 Cables De Lyon Geoffroy Delore Circular wave guide
GB2000385B (en) * 1977-06-10 1982-02-17 Cables De Lyon Geoffroy Delore A circular wave guide
GB2148758A (en) * 1983-11-02 1985-06-05 Norcros Investments Ltd Bending mandrel
CN106541005A (en) * 2016-10-13 2017-03-29 中车长春轨道客车股份有限公司 For the cavity filling device and its using method of hollow aluminium section bar bending process

Also Published As

Publication number Publication date
FR1214431A (en) 1960-04-08
US3016081A (en) 1962-01-09

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