GB1132520A - Improvements in or relating to composite electrical contacts - Google Patents

Improvements in or relating to composite electrical contacts

Info

Publication number
GB1132520A
GB1132520A GB4715866A GB4715866A GB1132520A GB 1132520 A GB1132520 A GB 1132520A GB 4715866 A GB4715866 A GB 4715866A GB 4715866 A GB4715866 A GB 4715866A GB 1132520 A GB1132520 A GB 1132520A
Authority
GB
United Kingdom
Prior art keywords
die
rivet
disc
wire
length
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
GB4715866A
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.)
Mallory Metallurgical Products Ltd
Original Assignee
Mallory Metallurgical Products Ltd
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 Mallory Metallurgical Products Ltd filed Critical Mallory Metallurgical Products Ltd
Publication of GB1132520A publication Critical patent/GB1132520A/en
Expired legal-status Critical Current

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
    • B21K1/58—Making machine elements rivets
    • B21K1/62—Making machine elements rivets special rivets, e.g. with electrical contacts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
    • 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
    • B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
    • B21K27/06—Cutting-off means; Arrangements thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Wire Processing (AREA)

Abstract

1,132,520. Making electrical contacts; forging; welding by pressure. MALLORY METALLURGICAL PRODUCTS Ltd. 21 Oct., 1966 [2 Nov., 1965], No. 47158/66. Headings B3A, B3H and B3R. A method of making a bi-metallic electrical contact, e.g. a rivet type contact, comprises shearing a disc from a wire of contact metal, shearing a length from wire of base metal or alloy thereof, placing the disc and wire in a die and joining their mating surfaces by pressure exerted under the impact of a fast moving weight. Copper wire is fed from a combined feeding, measuring and straightening device 100 and sheared by cutter means 31 into lengths 18. Each length 18 is heated in a device 33 which positions the length over a hole 16 in a carbide die 14. Meanwhile a disc 17 of silver or silver cadmium oxide is sheared from wire by a cutter 32 and the disc is carried by the cutter blade to a position directly above the length of copper. A guide assembly 98 is moved directly over the die 14 and when in position a weight 102 is impelled downwardly, passing through a hole 97 in the guide assembly to drive a punch holder 96 and punch 12 thereby forcing the length 18 and disc 17 against a carbide ram 15. The ram shapes the bottom of the shank of the rivet and the remaining energy in the weight 102 welds the two metals together before rebounding from the die. An hydraulic piston 20 is elevated driving a rod 106 and the ram 15 and the welded composite rod 25 is forced upwardly to a position 109 when the piston reaches the end of its stroke. The head of the rivet is shaped by tools (40), (36), Figs. 11, 12 (not shown), which are struck by the weight 102. To eject the rivet from the die 14, an hydraulic piston 111 is elevated and it contacts the rod 106 in the position where it was left by the piston 20 thereby forcing the ram 15 and rivet upwardly. A projection on the tool (40) carries the rivet to a storage space, Fig. 14 (not shown). Cooling liquid is circulated through a passage 117 in a ring 116 and a viscous liquid is introduced into the interstices between the ring and the die to help the passage of heat. The base 95 is watercooled and the various tools are mounted on blocks of copper alloy to assist in conducting heat to the base. All these operations are performed automatically in a vacuum chamber 30.
GB4715866A 1965-11-02 1966-10-21 Improvements in or relating to composite electrical contacts Expired GB1132520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA944365 1965-11-02

Publications (1)

Publication Number Publication Date
GB1132520A true GB1132520A (en) 1968-11-06

Family

ID=4142365

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4715866A Expired GB1132520A (en) 1965-11-02 1966-10-21 Improvements in or relating to composite electrical contacts

Country Status (2)

Country Link
DE (1) DE1564367A1 (en)
GB (1) GB1132520A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059341A1 (en) * 1981-03-04 1982-09-08 Hitachi, Ltd. Method of production of electric contact
CN103985579A (en) * 2014-05-28 2014-08-13 苏州工业职业技术学院 Machine frame of high-voltage circuit breaker air cylinder riveting machine
CN105957748A (en) * 2016-06-28 2016-09-21 苏州市吴中区胥口健浩五金加工厂 Rivet feeding device of travel switch assembly machine
CN112570635A (en) * 2020-11-04 2021-03-30 福达合金材料股份有限公司 Rivet forming device and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6038217B2 (en) * 1977-07-25 1985-08-30 中外電気工業株式会社 Composite electrical contact manufacturing equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059341A1 (en) * 1981-03-04 1982-09-08 Hitachi, Ltd. Method of production of electric contact
CN103985579A (en) * 2014-05-28 2014-08-13 苏州工业职业技术学院 Machine frame of high-voltage circuit breaker air cylinder riveting machine
CN105957748A (en) * 2016-06-28 2016-09-21 苏州市吴中区胥口健浩五金加工厂 Rivet feeding device of travel switch assembly machine
CN105957748B (en) * 2016-06-28 2018-05-22 海门华夏时丽网络科技服务有限公司 The rivet feeding device of travel switch kludge
CN112570635A (en) * 2020-11-04 2021-03-30 福达合金材料股份有限公司 Rivet forming device and method

Also Published As

Publication number Publication date
DE1564367A1 (en) 1969-12-18

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