GB898626A - Improvements in and relating to means for generating involute gears - Google Patents

Improvements in and relating to means for generating involute gears

Info

Publication number
GB898626A
GB898626A GB3288759A GB3288759A GB898626A GB 898626 A GB898626 A GB 898626A GB 3288759 A GB3288759 A GB 3288759A GB 3288759 A GB3288759 A GB 3288759A GB 898626 A GB898626 A GB 898626A
Authority
GB
United Kingdom
Prior art keywords
gear
wheel
rectilinear
generatrix
centre
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
GB3288759A
Inventor
Peter Herbert Cleff
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.)
Parsons and Marine Engineering Turbine Research and Development Association
Original Assignee
Parsons and Marine Engineering Turbine Research and Development Association
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 Parsons and Marine Engineering Turbine Research and Development Association filed Critical Parsons and Marine Engineering Turbine Research and Development Association
Priority to GB3288759A priority Critical patent/GB898626A/en
Priority to DE1960P0025746 priority patent/DE1294789B/en
Priority to CH1097260A priority patent/CH418784A/en
Publication of GB898626A publication Critical patent/GB898626A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
    • B23F23/003—Generating mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F17/00—Special methods or machines for making gear teeth, not covered by the preceding groups
    • B23F17/005—Special methods or machines for making gear teeth, not covered by the preceding groups for machining tooth fillet or tooth root
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F5/00—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
    • B23F5/02—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding
    • B23F5/06—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding disc with a plane front surface
    • B23F5/065—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding disc with a plane front surface and the grinding disc axis varying angularly with respect to the workpiece axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F5/00—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
    • B23F5/02—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding
    • B23F5/08—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding disc having the same profile as the tooth or teeth of a rack
    • B23F5/085—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding disc having the same profile as the tooth or teeth of a rack and the grinding disc axis varying angularly with respect to the workpiece axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Sewing Machines And Sewing (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Gear Processing (AREA)

Abstract

898,626. Gear-grinding. PARSONS & MARINE ENGINEERING TURBINE RESEARCH & DEVELOPMENT ASSOCIATION. Sept. 28, 1960 [Sept. 28, 1959], No. 32887/59. Class 83 (3). A gear generating machine head comprises a rotatable spindle adapted to carry a generating wheel, such as a grinding wheel 2, having a flat or cone-shaped operative face, mounted in a spindle-holding member 1 and angularly movable therewith about a main pivot 4 axially' normal to and co-planar with the generatrix g-g of the generating wheel and also parallel to the axis of the gear to be ground, the main pivot 4 being mounted on a main slide 5 slidable on a rectilinear main guide 6 1 -6 2 adapted to be positioned perpendicularly to the gear axis so that the rectilinear path of the main pivot lies a distance " R 0 + a " from the gear axis and is parallel to and distance " a " away from the tangent to the workpiece base circle of radius R 0 "at the point of intersection of the centre line of machine and workpiece with said base circle, and means for correlating the said angular and rectilinear movements so that, from a datum position offset by an amount # 0 R 0 from said centre line, an angular movement # i of the spindle-holding member is accompanied by a rectilinear movement a . tan # i -R 0 sec # i X [(# i - sin # i ) + # 0 (1 - cos #i)] or a high order approximation thereto, of the main pivot slide 5, whereby the said generatrix is a generatrix also of a true or nearly true involute i developed from the gear base circle of radius R 0 . A grinding-wheel having a cone angle of 150 degrees-178 degrees is employed so that tip and/or root relief or helix angle corrections may be made without interference between the wheel and other parts of the gear. The gear remains stationary while a tooth flank is ground or, if the gear is helical, it is rotated slowly as the wheel is traversed. The offset R 0 # 0 of the centre-line of the mechanism from the centre of the gear results in a reduction of the range of movement of the wheel, from say a stroke-range: max-stroke ratio of 4.4 down to 1.1. The wheel 2, Fig. 2, is carried on an arm 3 swung about the pivot 4 by a follower 9 contacting a master cam 7. To obviate the production of a master cam 7 for each different gear to be produced, an adjustable linkage 11, 13, 15, Fig. 3, is used. The linkage may be replaced by a slider-crank mechanism as shown in Fig. 4. Two such mechanisms may be provided one of which is set up for the next type of gear to be produced while the other mechanism is in use.
GB3288759A 1959-09-28 1959-09-28 Improvements in and relating to means for generating involute gears Expired GB898626A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3288759A GB898626A (en) 1959-09-28 1959-09-28 Improvements in and relating to means for generating involute gears
DE1960P0025746 DE1294789B (en) 1959-09-28 1960-09-27 Rolling device on a tooth flank grinding machine
CH1097260A CH418784A (en) 1959-09-28 1960-09-28 Machine for the production of gears using the hobbing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3288759A GB898626A (en) 1959-09-28 1959-09-28 Improvements in and relating to means for generating involute gears

Publications (1)

Publication Number Publication Date
GB898626A true GB898626A (en) 1962-06-14

Family

ID=10345520

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3288759A Expired GB898626A (en) 1959-09-28 1959-09-28 Improvements in and relating to means for generating involute gears

Country Status (3)

Country Link
CH (1) CH418784A (en)
DE (1) DE1294789B (en)
GB (1) GB898626A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160067804A1 (en) * 2014-09-04 2016-03-10 Eaton Corporation Modified tooth proportion gear cutter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3126768C1 (en) * 1981-07-07 1983-05-05 BHS-Dr.-Ing. Höfler Maschinenbau GmbH, 7505 Ettlingen Rolling gear on a gear cutting machine for involute gearing
DE3320914C1 (en) * 1983-06-09 1985-02-14 BHS-Dr.-Ing. Höfler Maschinenbau GmbH, 7505 Ettlingen Gear rolling machine for spur and helical gears

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH250712A (en) * 1945-09-07 1947-09-15 Buehler Hermann Machine for grinding involute-shaped tooth flanks of gears with straight or angled teeth using the hobbing process.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160067804A1 (en) * 2014-09-04 2016-03-10 Eaton Corporation Modified tooth proportion gear cutter
US10016827B2 (en) * 2014-09-04 2018-07-10 Eaton Corporation Modified tooth proportion gear cutter

Also Published As

Publication number Publication date
DE1294789B (en) 1969-05-08
CH418784A (en) 1966-08-15

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