US3552167A - Gear rolling equipment - Google Patents

Gear rolling equipment Download PDF

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Publication number
US3552167A
US3552167A US762898A US3552167DA US3552167A US 3552167 A US3552167 A US 3552167A US 762898 A US762898 A US 762898A US 3552167D A US3552167D A US 3552167DA US 3552167 A US3552167 A US 3552167A
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US
United States
Prior art keywords
work
dies
gear
support
rolling
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
US762898A
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English (en)
Inventor
Benjamin F Bregi
Arthur B Bassoff
Russell W Anthony
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.)
Nachi Machining Technology Co
Original Assignee
Lear Siegler Inc
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 Lear Siegler Inc filed Critical Lear Siegler Inc
Application granted granted Critical
Publication of US3552167A publication Critical patent/US3552167A/en
Assigned to ADD, INC., A MICHIGAN CORP. reassignment ADD, INC., A MICHIGAN CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LEAR SIEGLER, INC. A DE. CORP.
Assigned to NATIONAL BROACH & MACHINE COMPANY, reassignment NATIONAL BROACH & MACHINE COMPANY, CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). 5-30-86 Assignors: ADD, INC.
Anticipated expiration legal-status Critical
Assigned to FERRETT, JAMES A., WILKINS, LEONARD J., DONNELLY, JOHN T.;, RAO, SURENDRA B. reassignment FERRETT, JAMES A. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NATIONAL BROACH & MACHINE COMPANY
Assigned to NATIONAL BROACH & MACHINE COMPANY reassignment NATIONAL BROACH & MACHINE COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. SECURITY AGREEMENT RECORDED AT REEL 5033 FRAME 0527 Assignors: DONNELLY, JOHN T., FERRETT, JAMES A., RAO, SURENDRA B., WILKINS, LEONARD J.
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H5/00—Making gear wheels, racks, spline shafts or worms
    • B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
    • B21H5/022—Finishing gear teeth with cylindrical outline, e.g. burnishing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49462—Gear making
    • Y10T29/49467—Gear shaping
    • Y10T29/49471—Roll forming
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/10—Gear cutting
    • Y10T409/100795—Gear cutting with work or product advancing
    • Y10T409/100954—Utilizing transfer arm

Definitions

  • Gear rolling apparatus comprising a pair of rolling dies. Means are provided for driving both of said dies positively in timed rotation while providing for timing adjustment between the dies. One of the dies is vertically movable toward the other to apply rolling pressure. An arbor supports a work blank intermediate the dies, and means are provided for moving the work arbor toward the stationary die one-half the amount of movement of the movable die.
  • the gear rolling equipment may be used for performing a finish rolling operation on previously cut or otherwise formed gears. However, it may also be employed to produce gears from circular blanks. In either case, a pair of gear-like rolling dies are provided which are movable towards each other to apply rolling pressure to a work piece positioned between the dies. Both dies are positively driven in rotation at identical speeds and means are provided for advancing or retarding one die with reference to the other during rolling movement thereof.
  • the work support structure includes an automatic loading device and the entire work support structure including the loading device is movable to position a rotatable work arbor midway between the axes of the rolling dies.
  • Nonpositive drive means are provided for the work arbor and this means drives the work arbor at a speed somewhat different and preferably slightly greater than the speed at which it will be driven by the meshed engagement between the rolling dies and the work piece. This insures that the teeth on the rolling dies will engage in tooth spaces on the work piece after which rotation of the work is of course determined solely by the rotation of the dies.
  • the machine compromises a frame 10 having adjacent the bottom thereof a drive motor 12 connected through a belt 14 to drive gearing connected to the rolling dies as will presently be described.
  • an upper die support 16 Adjacent the top of the frame 10 is an upper die support 16 including a bracket 18 having a curved undersurface 20 adapted to receive a bracket 22 for angular adjustment about a horizontal axis located at the center of curvature of the guide surface 20. As will be a parent upon further description, this provides for angular adjustment of the upper die roll about a horizontal axis.
  • the bracket 22 may be moved to adjusted position and clamped by suitable means such for example as the bolt 24.
  • Means are also provided for effecting a swivelling adjustment of the upper die roll about a vertical axis and this means comprises a post 26 on the upper spindle support 28.
  • the post 26 is provided with teeth in the zone 30 engaged by worm teeth on an adjusting device 32, rotation of which will effect angular adjustment of the spindle support 28.
  • Suitable means are provided for clamping the spindle support 28 to the member 22 in adjusted position.
  • the upper stationary die roll support includes a drive shaft 37 for supporting and driving the upper die roll 38.
  • the lower vertically movable die roll support includes a drive shaft 39 for supporting and driving the lower die roll 40.
  • the upper die roll 38 once its position has been adjusted as previously described, remains stationary except for rotation imparted thereto, as will subsequently be described.
  • the lower die roll 40 is vertically movable upon upward movement of the ram 34, this movement being imparted by a piston and cylinder construction 42 adapted to apply relatively massive pressure to a work piece W interposed between the die rolls 38 and 40.
  • Means are provided for driving the die rolls 38 and 40 in rotation and these means comprise an intermediate gear 44 in mesh with gears 46 and 48 which are connected respectively through universal drive connections 50 and 52 to the spindles supporting the die rolls 38 and 40.
  • the upper drive gear 46 has a central opening therethrough and includes a spline section at 56.
  • a timing sleeve 60 Received within the opening '58 in the gear 46 is a timing sleeve 60 supported for rotation in bearings 62, the sleeve having an external spline at 56 coacting with the internal spline in the gear '46.
  • the sleeve 60 is provided at 64 with an internal spline coacting with an external spline formed on a drive shaft 66. It will be understood that the splines at 56 and 64 are of different angles.
  • one set of cooperating splines may be spur type or parallel to the axis of the sleeve 60, in which case the other pair of interconnecting splines are helical.
  • both sets of splines may be helical and differ only in helix angle.
  • the sleeve 60 is axially adjustable by virtue of its connection to an adjusting sleeve '68 which is externally threaded as indicated at 70 for coaction with threads provided at the interior of a stationary support member 72.
  • the adjusting sleeve 68 is connected as by a pin 74 to an adjusting knob 76.
  • Rotation of the knob 76 effects longitudinal adjustment of the sleeve 60 and the timing adjustment is provided by virtue of the different helical disposition of the splines.
  • the work support structure includes means for effecting automatic loading and includes also non-positive drive means for rotating the work piece at a speed somewhat different than the speed at which the work piece will be driven by its engagement with the die rolls 38 and 40.
  • This entire work supporting structure including the automatic loading mechanism is vertically movable and its vertical movement is related to the vertical movement of the ram 34.
  • the entire support structure illustrated generally at 80 is connected by means of a post 82 to an actuating arm 84 pivoted as indicated at 86 to a post '88 forming a part of the frame 10.
  • the arm 84 is slotted as indicated at 90 and 92.
  • the post 82 carries a pin 94 which enters the slot 92 and effects vertical movement of the work supporting structure as the arm 84 is rocked,
  • the arm 84 is rocked by means of a pin 96 carried by the ram 34 and movable in the slot 90 provided adjacent the movable end of the arm 84. Since the spacing of the pin 96 from the pivot mounting 86 is twice that of the pin 94, it will be apparent that as the lower guide roll 40 is moved vertically by a given distance, the work supporting structure including the work piece W is moved vertically an amount equal to exactly half the amount of vertical movement of the movable die roll 40.
  • the automatic loading structure includes an inclined chute 102 having a closed end wall 104 which arrests downward movement of the lowermost gear of a series of work pieces or cylindrical blanks.
  • Carried by the chute 102 is a piston and cylinder unit 106 which is operable to push a work gear laterally from the chute 102 into a slide 108 connected to the piston of a second piston and cylinder unit 110.
  • the slide 108 is generally C-shaped and is adapted to receive a work gear and position it accurately between the die rolls 38 and 40 but to permit retraction of the slide 108 by virtue of passage of the work supporting arbor after the work gear has been engaged thereby.
  • the arbor 112 is adapted to be projected by a third piston and cylinder unit 114 through the opening in the work piece after the work piece has been properly positioned between the rolling dies. This arbor extends through the work piece and into a nonpositive drive unit 116. Movement of the arbor 112 carries the gear laterally out of the generally C-shaped slide 108 so that the reduced arbor 112 permits retraction of the slide 108.
  • the piston and cylinder unit 114 retracts the arbor'112, first moving the work gear W into alignment with a discharge chute 118 at which time it is stripped from the retracting arbor and remains in position until the next forward movement of the slide 108, which pushes the finished gear into the chute 118.
  • the vertical ram 34 carries siutable switch actuators indicated generally at 12 which operate switches 122 to provide automatic sequencing of the operation.
  • Means including an adjusting screw mechanism indicated generally at 124 intermediate the vertically movable piston of the piston and cylinder power unit 42, for effecting initial adjustment of the lower guide roll 40 in accordance with the size of the work gear W.
  • the screw mechanism includes a worm and worm gear adjusting unit 126.
  • FIG. a tubular connection depending from the work support which carries the work spindle 112.
  • connection 130 is tubular and includes a radially inwardly extending flange 132.
  • a stationary rack 134 Carried by the frame 10 is a stationary rack 134. Carried by and movable vertically with the ram 34 is an actuating rack 136. Extending vertically within the tubular connection is a post 138 having a pinion 140 at its lower end to mesh with the racks 134 and 136. Since the rack 134 is stationary it will be apparent that vertical movementof the pinion 1'40, and hence of the post 138, is exactly equal to one-half the upward movement of the ram 34 and pinion 140. Thus, as the lower roll die 40 moves upwardly, the mechanism just described moves the work gear W upwardly by an amount equal to half the upward movement of the die 40.
  • the post 138 is provided with a radial flange 142 which may have a vertical dimension equal to the thickness of the flange 132.
  • Fixed to the post 138 are spring abutment collars 144 and 146, these collars being provided at opposite sides of the intermediate flange 142.
  • Slidable on the post 138 are annular spring abutment collars 148 and 150.
  • a compression spring 152 is provided intermediate the collars 144 and 148 and a second compression spring 154 is provided intermediate the collars 146 and 150. Accordingly, assuming the post 138 to be fixed at any instance, vertical movement of the tubular connection 130 is provided, such movement taking place against a force opposing such movement by the spring 152 or 154, depending upon the directon of movement.
  • a floating connection of this type may be, and preferably is, provided in the embodiment of the invention illustrated in FIG. 1.
  • Gear rolling apparatus comprising a frame, a stationary die roll support on said frame, a movable die roll support on said frame, means on said frame mounting said movable die roll support for movement toward and away from said stationary support, actuating means connected to said movable die roll support, die roll shafts rotatable on each of said supports, positive drive means for rotating both of said shafts in the same direction in synchronism, a work support including a work arbor support intermediate said die roll shafts, and means connecting said'work support and movable die roll support for simultaneous movement in'which said work support moves one-half the distance moved by said movable die roll support.
  • the means conmeeting said movable die roll support and said work support comprising an arm pivoted to said frame, and connections between said arm and said movable die roll support and-said work support at distances from the pivot mounting of said arm having the ratio of 2: 1.
  • Gear rolling apparatus comprising a frame, a stationary die roll support on said frame, a movable die roll support on said frame, means on said frame mounting said movable die roll support for movement toward and away from said stationary support, actuating means connected to said movable die roll support, die roll shafts rotatable on each of said supports, positive drive means for rotating both of said shafts in synchronism, and means for adjusting both die roll shafts independently about an axis perpendicular to and intersecting the axes thereof.
  • Apparatus as defined in claim 3 comprising means for adjusting both die roll shafts independently about axes perpendicular to a line intersecting and perpendicular to the axes of said shafts.
  • said die roll supports having shafts extending horizontally and vertically spaced, and in which the independent adjustment means for said shafts provides independent angular adjustment thereof about a -vertical axis intersecting said shafts midway between the sides of roll dies carried thereby;
  • Apparatus as defined in claim 5 comprising further independent adjustment means for said shafts to provide independent angular adjustment thereof about horizontal axes perpendicular to the axes of said shafts.
  • Apparatus as defined in claim 1 comprising timing means for adjusting the timed relationship of said shafts while they are rotating.
  • said positive drive means comprising a pair of gears, one on each of said shafts, a single drive gear in mesh with both of the gears of said pair, and means intermediate one of the gears of said pair of gears and the die connected thereto for adjustingthe timed relation between said one gear and die for adjusting the timed relation between the dies.
  • Apparatus as defined in claim 7 comprising universal drive joints intermediate the gears of said pair and the shafts driven thereby.
  • Apparatus as defined in claim 10 comprising resilient means providing substantial opposition to displacement of said work support arbor in either direction from an intermediate position.
  • the means connecting the work support and movable die roll support comprises a first rack movable with the movable die roll support, a second rack parallel to the first rack and fixed to the frame, a pinion in mesh simultaneously with both racks, and a lift connection between said pinion and said work support.
  • said lift connection provides for limited floating movement of the work support between said work support and said pinion
  • said life connection comprising a post connected to said pinion and having a flange intermediate its ends, a tubular member connected to said work support and surrounding said post, said tubular member having a radially inwardly extending flange normally in combination with the flange on said post, fixed spring abutments on said post at opposite sides of said flanges and movable spring abutments slidable on said post at opposite sides of said flanges and engageable in intermediate position with both of said flanges, and compression springs interposed between the pair of spring abutments at each of said flanges.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Gear Processing (AREA)
US762898A 1968-09-26 1968-09-26 Gear rolling equipment Expired - Lifetime US3552167A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76289868A 1968-09-26 1968-09-26

Publications (1)

Publication Number Publication Date
US3552167A true US3552167A (en) 1971-01-05

Family

ID=25066328

Family Applications (1)

Application Number Title Priority Date Filing Date
US762898A Expired - Lifetime US3552167A (en) 1968-09-26 1968-09-26 Gear rolling equipment

Country Status (5)

Country Link
US (1) US3552167A (enrdf_load_stackoverflow)
JP (1) JPS4925551B1 (enrdf_load_stackoverflow)
DE (1) DE1948806B2 (enrdf_load_stackoverflow)
FR (1) FR2018895A1 (enrdf_load_stackoverflow)
GB (1) GB1235437A (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631704A (en) * 1970-01-12 1972-01-04 Teledyne Inc Apparatus for roll forming toothed workpieces
US3712094A (en) * 1971-02-04 1973-01-23 Lear Siegler Inc Gear rolling machine
US3738140A (en) * 1971-07-06 1973-06-12 Lear Siegler Inc Gear rolling machine
US3776011A (en) * 1972-05-10 1973-12-04 Lear Siegler Inc Double die gear rolling machine
US3894418A (en) * 1973-03-29 1975-07-15 Zahnradfabrik Friedrichshafen Apparatus for finishing gear teeth
US4177660A (en) * 1978-03-24 1979-12-11 Vyzkumny Ustav Tvarecich Stroju A Technologie Tvareni Apparatus for feeding workpieces for cross wedge rolling
US4186583A (en) * 1978-05-08 1980-02-05 Vyzkumny Ustav Tvarecich Stroju A Technologie Tvareni Apparatus for cross wedge rolling
JPS5730570B1 (enrdf_load_stackoverflow) * 1971-07-06 1982-06-29
DE3140059A1 (de) * 1981-10-08 1983-04-28 Dnepropetrovskij metallurgičeskij institut, Dnepropetrovsk Walzwerkspindel
US4502822A (en) * 1979-03-29 1985-03-05 Carl Hurth Maschinen- Und Zahnradfabrik Gmbh & Co. Machine for the precision working of tooth surfaces of toothed workpieces
US5339669A (en) * 1991-05-23 1994-08-23 Escofier Technologie S.A. Apparatus and process permitting the cold forming of grooves on the wall of a revolving part
CN111843053A (zh) * 2020-07-22 2020-10-30 宋柳柳 一种螺旋齿轮加工设备

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1044495A (en) * 1976-08-04 1978-12-19 Anderson-Cook Rotary forming machine and tool
JPS55118264U (enrdf_load_stackoverflow) * 1979-02-14 1980-08-21
FR2479053A1 (fr) * 1980-03-25 1981-10-02 Marchal Equip Auto Procede de finition par galetage d'un filet helicoidal d'engrenage
FR2513907A1 (fr) * 1981-10-05 1983-04-08 Dn Metallurg Broche de train de laminoir
JP6400009B2 (ja) * 2013-07-23 2018-10-03 株式会社ニッセー 歯車転造機

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631704A (en) * 1970-01-12 1972-01-04 Teledyne Inc Apparatus for roll forming toothed workpieces
US3712094A (en) * 1971-02-04 1973-01-23 Lear Siegler Inc Gear rolling machine
US3738140A (en) * 1971-07-06 1973-06-12 Lear Siegler Inc Gear rolling machine
JPS5730570B1 (enrdf_load_stackoverflow) * 1971-07-06 1982-06-29
US3776011A (en) * 1972-05-10 1973-12-04 Lear Siegler Inc Double die gear rolling machine
US3894418A (en) * 1973-03-29 1975-07-15 Zahnradfabrik Friedrichshafen Apparatus for finishing gear teeth
US4177660A (en) * 1978-03-24 1979-12-11 Vyzkumny Ustav Tvarecich Stroju A Technologie Tvareni Apparatus for feeding workpieces for cross wedge rolling
US4186583A (en) * 1978-05-08 1980-02-05 Vyzkumny Ustav Tvarecich Stroju A Technologie Tvareni Apparatus for cross wedge rolling
US4502822A (en) * 1979-03-29 1985-03-05 Carl Hurth Maschinen- Und Zahnradfabrik Gmbh & Co. Machine for the precision working of tooth surfaces of toothed workpieces
DE3140059A1 (de) * 1981-10-08 1983-04-28 Dnepropetrovskij metallurgičeskij institut, Dnepropetrovsk Walzwerkspindel
US5339669A (en) * 1991-05-23 1994-08-23 Escofier Technologie S.A. Apparatus and process permitting the cold forming of grooves on the wall of a revolving part
CN111843053A (zh) * 2020-07-22 2020-10-30 宋柳柳 一种螺旋齿轮加工设备

Also Published As

Publication number Publication date
DE1948806B2 (de) 1974-06-12
JPS4925551B1 (enrdf_load_stackoverflow) 1974-07-01
FR2018895A1 (enrdf_load_stackoverflow) 1970-06-26
GB1235437A (en) 1971-06-16
DE1948806A1 (de) 1970-05-06

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ADD, INC., A MICHIGAN CORP.,STATELESS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEAR SIEGLER, INC. A DE. CORP.;REEL/FRAME:004600/0061

Effective date: 19860530

Owner name: ADD, INC., A MICHIGAN CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:LEAR SIEGLER, INC. A DE. CORP.;REEL/FRAME:004600/0061

Effective date: 19860530

AS Assignment

Owner name: NATIONAL BROACH & MACHINE COMPANY,

Free format text: CHANGE OF NAME;ASSIGNOR:ADD, INC.;REEL/FRAME:004664/0771

Effective date: 19860708

AS Assignment

Owner name: RAO, SURENDRA B.

Free format text: SECURITY INTEREST;ASSIGNOR:NATIONAL BROACH & MACHINE COMPANY;REEL/FRAME:005033/0527

Effective date: 19880928

Owner name: FERRETT, JAMES A.

Free format text: SECURITY INTEREST;ASSIGNOR:NATIONAL BROACH & MACHINE COMPANY;REEL/FRAME:005033/0527

Effective date: 19880928

Owner name: WILKINS, LEONARD J.

Free format text: SECURITY INTEREST;ASSIGNOR:NATIONAL BROACH & MACHINE COMPANY;REEL/FRAME:005033/0527

Effective date: 19880928

Owner name: DONNELLY, JOHN T.;

Free format text: SECURITY INTEREST;ASSIGNOR:NATIONAL BROACH & MACHINE COMPANY;REEL/FRAME:005033/0527

Effective date: 19880928

AS Assignment

Owner name: NATIONAL BROACH & MACHINE COMPANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. SECURITY AGREEMENT RECORDED AT REEL 5033 FRAME 0527;ASSIGNORS:DONNELLY, JOHN T.;WILKINS, LEONARD J.;FERRETT, JAMES A.;AND OTHERS;REEL/FRAME:005639/0406

Effective date: 19910312