GB1221321A - An improvement in or relating to worm gearing - Google Patents

An improvement in or relating to worm gearing

Info

Publication number
GB1221321A
GB1221321A GB3946068A GB3946068A GB1221321A GB 1221321 A GB1221321 A GB 1221321A GB 3946068 A GB3946068 A GB 3946068A GB 3946068 A GB3946068 A GB 3946068A GB 1221321 A GB1221321 A GB 1221321A
Authority
GB
United Kingdom
Prior art keywords
welding
cylinder member
hardened
zone
zones
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
GB3946068A
Inventor
Richard Arthur Kingslow Long
Walter Thomas Chesters
Frank Mellor
Donald Beaumont Graham
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.)
BROWN GEAR IND
David Brown Gear Industries Ltd
Original Assignee
BROWN GEAR IND
David Brown Gear Industries 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 BROWN GEAR IND, David Brown Gear Industries Ltd filed Critical BROWN GEAR IND
Publication of GB1221321A publication Critical patent/GB1221321A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/22—Toothed members; Worms for transmissions with crossing shafts, especially worms, worm-gears

Abstract

1,221,321. Making gears; welding by pressure and fusion. DAVID BROWN GEAR INDUSTRIES Ltd. 8 Jan., 1969 [10 Jan., 1968; 17 Aug., 1968], Nos. 1364/68 and 39460/68. Headings B3A and B3R. A method of producing worms for worm gearing comprising forming a helically threaded cylinder member surface hardening the cylinder member, and securing a shaft member to each end of the cylinder member by a welding process resulting in a restricted zone of high temperature. The cylinder member is helically threaded by rolling, milling or hobbing and is surface hardened by induction heating case hardening or flame hardening. The hardened zone of the bar alternate with narrow unhardend zones. Each hardened zone corresponds to the toothed portion of a finhed wisrand them o hardened zones are separated from one another by parting off through the unhardened zones. The restricted temperature zone welding process employed is either friction welding or electron beam welding. In one embodiment each shaft member is located relative to the cylinder member prior to welding by a projection formed on the end of one of the members which fits in a recess formed in the adjacent end of the other of said members.
GB3946068A 1968-01-10 1968-01-10 An improvement in or relating to worm gearing Expired GB1221321A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB136468 1968-01-10

Publications (1)

Publication Number Publication Date
GB1221321A true GB1221321A (en) 1971-02-03

Family

ID=9720736

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3946068A Expired GB1221321A (en) 1968-01-10 1968-01-10 An improvement in or relating to worm gearing

Country Status (1)

Country Link
GB (1) GB1221321A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564552A1 (en) * 1984-05-12 1985-11-22 Nikken Kousakusho Kk Device with a worm made from hard metal and fixed on a shaft.
WO2003026814A1 (en) * 2001-09-22 2003-04-03 Robert Bosch Gmbh Method for producing a shaft comprising a sleeve, and device containing one such shaft
WO2006009720A1 (en) * 2004-06-22 2006-01-26 The Timken Company Seal for worm gear speed reducer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564552A1 (en) * 1984-05-12 1985-11-22 Nikken Kousakusho Kk Device with a worm made from hard metal and fixed on a shaft.
WO2003026814A1 (en) * 2001-09-22 2003-04-03 Robert Bosch Gmbh Method for producing a shaft comprising a sleeve, and device containing one such shaft
WO2006009720A1 (en) * 2004-06-22 2006-01-26 The Timken Company Seal for worm gear speed reducer
US7662240B2 (en) 2004-06-22 2010-02-16 The Timken Company Seal for worm gear speed reducer

Similar Documents

Publication Publication Date Title
ZA894668B (en) Composite-steel workpiece and method of its manufacture
ES8701549A1 (en) Forging process.
GB1221321A (en) An improvement in or relating to worm gearing
GB2143161A (en) Sintered metal body with at least one toothing
DE2328793A1 (en) PROCESS FOR MANUFACTURING HOLLOW SCREWS FOR HEAT EXCHANGERS
ES8401870A1 (en) Manufacture of member for gearing with tooth
ES379080A1 (en) Method for the production of plates
FR1454933A (en) Process for the production of threaded members having undergone surface tempering
GB2013531A (en) Producing Case-Hardened Gears
US1393818A (en) Rectified-tooth hob
GB1395419A (en) Strength of materials by heat treatment
GB1019672A (en) Improvements in or relating to methods and apparatus for rolling screw taps
US1636670A (en) Method of making segmental laminated gears
FR2175075A1 (en) Gear wheel teeth strengthening - by plastic deformation in direction of operational load after equalizing trea ment
GB183478A (en) Improvements in worm hobs for gear cutting
DE2730262A1 (en) Multi-segment dies for moulding glass - where all die surfaces exposed to wear are made of very hard alloys
GB1378761A (en) Manufacture of forming rolls
DE2362977C2 (en) Method of manufacturing hardened gears
DE909405C (en) For shrinking onto or removing from a shaft, heated shrinking hub for wheel bodies, especially for runners of large electrical machines
SU1364413A1 (en) Method of producing toothed articles
JPS61279438A (en) Manufacture of metal mold for producing spur gear
Puhar Casehardened Cylindrical Gear Pairs
GB1516665A (en) Gear elements
CH391276A (en) Device for the production of sliding rings made of plastics
GB1122326A (en) Method of manufacturing wear-resistant pieces of vitreous carbon