US3624972A - Generating mechanism for a gear grinding machine for helical gears - Google Patents

Generating mechanism for a gear grinding machine for helical gears Download PDF

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Publication number
US3624972A
US3624972A US38768A US3624972DA US3624972A US 3624972 A US3624972 A US 3624972A US 38768 A US38768 A US 38768A US 3624972D A US3624972D A US 3624972DA US 3624972 A US3624972 A US 3624972A
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US
United States
Prior art keywords
slide
generating
workpiece
pitch
block
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 - Lifetime
Application number
US38768A
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English (en)
Inventor
Willi Graf
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.)
Maag Gear Wheel and Machine Co Ltd
Maag Zahnrader und Maschinen AG
Original Assignee
Maag Zahnrader und Maschinen AG
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 Maag Zahnrader und Maschinen AG filed Critical Maag Zahnrader und Maschinen AG
Application granted granted Critical
Publication of US3624972A publication Critical patent/US3624972A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • generating mechanism for a gear grinding machine for helical gears on which a workpiece having helical teeth which are to be ground is mounted on a generating slide, a rolling pitch block is fitted to a work spindle which is to carry the workpiece, the rolling pitch block is encircled by rolling pitch tapes, the ends of which pitch tapes are fixed to the pitch block and to a secondary slide, and both the secondary slide and the generating slide are moveable parallel to each other and at right angles to the workpiece axis.
  • the rolling pitch tapes are passed round return idler guide pulleys, the said guide pulleys are mounted in a tape stand which is moveable parallel to the generating slide and to the secondary slide, and the said tape stand is moveable from side to side by a sliding block which is slidable in a guideway which is angularly adjustable according to the helix angle of the teeth of the workpiece.
  • This invention relates to a generating mechanism for a gear grinding machine for helical gears, on which a workpiece having helical teeth which are to be ground is mounted on a generating slide, a rolling pitch block is fitted to a work spindle which is to carry the workpiece, the rolling pitch block is encircled by rolling pitch tapes, the ends of which pitch tapes are fixed to the pitch block and to a secondary slide, and both the secondary slide and the generating slide are moveable par allel to each other and at right angles tothe workpiece axis.
  • Such a generating mechanism is known for a gear grinding machine on which the grinding wheel is fed across the gear tooth width, and in the case of helical gears is also moved from side to side according to the helix angle.
  • the generating actions of the two slides that is, of the generating slide and of the secondary slide, are derived from a lever, a fixed fulcrum of which is in the horizontal plane of generation of the workpiece, one connection pivot pin of the said lever joins with the generating slide in the horizontal plane through the workpiece axis, and another connection pivot pin of the said lever joins with the secondary slide in the horizontal plane in which the rolling pitch tapes run oil the rolling pitch block.
  • the rolling pitch tapes are passed round return idler guide pulleys, the said guide pulleys are mounted on a tape stand which is moveable 3,624,972 Patented Dec. 7, 1971 parallel to the generating slide and to the secondary slide, the said tape stand is moveable from side to side by a sliding block which is slidable in a guideway which is angularly adjustable according to the helix angle of the teeth of the workpiece.
  • a recommendable practice is to drive the generating slide and secondary slide with one disc crank each, both with adjustable stroke, and both of which disc cranks are fitted to the same crank shaft.
  • a carriage 3 slides, moving the workpiece 2 axially thereof to feed it in the tooth longitudinal direction past two dished grinding wheels 4 and 5.
  • a generating slide 6 is located slidable on guideways 31 on the carriage which are at right angles to the said axis of the workpiece 2 and parallel to the common plane through the axes of the dished grinding wheels 4 and 5'.
  • Mounted on the generating slide 6 is a generating head 7 and a tailstock 8, in which the workpiece 2 is set up in a manner allowing its rotation.
  • the workpiece 2 is secured to a work spindle 9, to which latter a rolling pitch block 10 is also secured.
  • a rolling pitch block 10 is also secured.
  • the pair of rolling pitch tapes 11 then pass are fastened to the rolling pitch block 10 and encircle round a return idler guide pulley 13, and the pair of rolling pitch tapes 12 pass round a return idler guide pulley 14, both of which pulleys are mounted rotatably in bearings 32 in a tape stand 15, the bearings 32 being adjustable vertically in the tape stand.
  • the tape stand 15 is likewise located in guideways 33 on the carriage 3 and is movable parallel to and with the generating slide 6.
  • a sliding block 16 Attached to the tape stand is a sliding block 16, which engages and slides in a guide 17.
  • the guide 17 is mounted on the bed 1 and is rotatable about its axis so as to be set at an appropriate angle on the bed according to the helix angle of the teeth of the workpiece 2, and the guide is then clamped to the bed 1.
  • the other ends of the rolling pitch tapes 11 and 12 are fixed to a bracket 34 on a secondary slide 18 and which is adjustable vertically in said secondary slide of the two pairs thereof.
  • the secondary slide 18 is moveable in guideways 35 on the generating slide 6 and parallel to the sliding movement of the generating slide 6 and of the tape stand 15.
  • This secondary slide 18 is driven to and fro by a block 19 which slides in a guide 36 on the secondary slide 18, the block 19 being rotatable on a crank pin 37 on a disc crank 20.
  • the stroke of the block 19 is adjustable by the position of the crank pin 37 along a diametral slot 38 in the disc crank 20.
  • the disc crank 20 is rigidly secured to a rotatable crank shaft 21 to which another disc crank 22 also is rigidly secured.
  • a crank pin 39 on the disc crank 22 carries a rotatable block 23 which is slidable in a guid 40 on the generating slide 6, whereby to drive the generating slide to and fro on the carriage 3, the stroke of the block 23 being ad- 3 justable by adjusting the position of the crank pin 39 along a diametral slot 41 in the disc crank 22.
  • d diameter of the rolling pitch block 10
  • d base circle diameter of the teeth on the workpiece 2.
  • Generating mechanism for a gear grinding machine for helical gears on which a workpiece having helical teeth which are to be ground is mounted on a generating slide, a rolling pitch block fitted to a work spindle for carrying said workpiece, said rolling pitch block being encircled by rolling pitch tapes, the ends of said pitch tapes being fixed to the pitch block and to a secondary slide, and both said secondary slide and said generating slide are moveable parallel to each other and at right angles to the workpiece axis, characterised in that said rolling pitch tapes being passed round return idler guide pulleys, said guide pulleys being mounted in a tape stand moveable parallel to said generating slide and to said secondary slide, said tape stand being moveable from side to side by a sliding block which is slidable in a guideway, said guideway being angularly adjustable according to the helix angle of the teeth of the workpiece.
  • Generating mechanism characterised in the said generating slide and said secondary slide are each driven by a separate disc crank with adjustable stroke, and that the two disc cranks are fitted to a common crank shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
US38768A 1969-06-03 1970-05-19 Generating mechanism for a gear grinding machine for helical gears Expired - Lifetime US3624972A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH839169A CH494083A (de) 1969-06-03 1969-06-03 Wälzeinrichtung für Zahnflankenschleifmaschine

Publications (1)

Publication Number Publication Date
US3624972A true US3624972A (en) 1971-12-07

Family

ID=4339601

Family Applications (1)

Application Number Title Priority Date Filing Date
US38768A Expired - Lifetime US3624972A (en) 1969-06-03 1970-05-19 Generating mechanism for a gear grinding machine for helical gears

Country Status (5)

Country Link
US (1) US3624972A (enrdf_load_stackoverflow)
CH (1) CH494083A (enrdf_load_stackoverflow)
DE (1) DE2027038A1 (enrdf_load_stackoverflow)
FR (1) FR2049838A5 (enrdf_load_stackoverflow)
GB (1) GB1256843A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877150A (en) * 1971-02-25 1975-04-15 Hoefler Willy Gear generating machine for making and testing involute gears
US3897656A (en) * 1972-02-08 1975-08-05 Willy Hofler Dr Ing Machine for manufacturing or testing the tooth flanks of involute gears
US4393625A (en) * 1979-06-20 1983-07-19 Maag Gear-Wheel & Machine Company Limited Apparatus for grinding gears
US4512109A (en) * 1981-07-07 1985-04-23 Bhs-Dr. Ing Hofler, Maschinenbau Gmbh Rolling gear apparatus for an involute tooth gear cutting machine
CN101829815A (zh) * 2010-05-10 2010-09-15 天津市精诚机床制造有限公司 一种锥齿轮齿顶加工方法及锥齿轮齿顶倒角机
CN106141920A (zh) * 2016-07-14 2016-11-23 厦门大学 一种成形磨砂轮开槽机构及方法
CN113814483A (zh) * 2020-09-21 2021-12-21 王健鹏 一种减速器齿轮加工用插齿装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877150A (en) * 1971-02-25 1975-04-15 Hoefler Willy Gear generating machine for making and testing involute gears
US3897656A (en) * 1972-02-08 1975-08-05 Willy Hofler Dr Ing Machine for manufacturing or testing the tooth flanks of involute gears
US4393625A (en) * 1979-06-20 1983-07-19 Maag Gear-Wheel & Machine Company Limited Apparatus for grinding gears
US4512109A (en) * 1981-07-07 1985-04-23 Bhs-Dr. Ing Hofler, Maschinenbau Gmbh Rolling gear apparatus for an involute tooth gear cutting machine
CN101829815A (zh) * 2010-05-10 2010-09-15 天津市精诚机床制造有限公司 一种锥齿轮齿顶加工方法及锥齿轮齿顶倒角机
CN106141920A (zh) * 2016-07-14 2016-11-23 厦门大学 一种成形磨砂轮开槽机构及方法
CN113814483A (zh) * 2020-09-21 2021-12-21 王健鹏 一种减速器齿轮加工用插齿装置

Also Published As

Publication number Publication date
DE2027038A1 (de) 1971-01-07
CH494083A (de) 1970-07-31
FR2049838A5 (enrdf_load_stackoverflow) 1971-03-26
GB1256843A (enrdf_load_stackoverflow) 1971-12-15

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