US3765202A - Die roll apparatus for internal gears - Google Patents

Die roll apparatus for internal gears Download PDF

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Publication number
US3765202A
US3765202A US00180004A US3765202DA US3765202A US 3765202 A US3765202 A US 3765202A US 00180004 A US00180004 A US 00180004A US 3765202D A US3765202D A US 3765202DA US 3765202 A US3765202 A US 3765202A
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United States
Prior art keywords
gear
die roll
internal gear
disposed
exert
Prior art date
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Expired - Lifetime
Application number
US00180004A
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English (en)
Inventor
O Bauknecht
A Horl
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ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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Filing date
Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
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Publication of US3765202A publication Critical patent/US3765202A/en
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    • 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

Definitions

  • ABSTRACT A floating mount for internal gears is provided which holds the gears against a die roll gear that smooths and chamfers the teeth.
  • the die roll gear operates inside the internal gear which is pressed against it by one or more freely rotative pressure wheels engaging its exterior periphery and force feeding it against the die roll gear as the die roll gear is rotated by power means.
  • An adjustable holding member is disposed against one radial face of the internal gear to limit axial movement and support it against axial stress while the other radial face is slidably supported on a surface encompassing the die roll gear.
  • the present invention relates to the finishing that is smoothing, deburring and chamfering of internal gears which present problems not present in performing such an operation on externally toothed gears.
  • Such problems have been solved in a novel and simple manner in the present instance by providing a mount for the work gear comprising a surface on which a radial face of the work gear rests and can slide radially.into progressive tooth engagement with a die roll gear rotated by power and disposed inside the work gear.
  • a holder member is adjustable so as to be engageable with the opposite radial face of the work gear in order to prevent axial displacement.
  • FIG. 1 illustrates in elevational partial cross-section the essential elements of an apparatus for carrying out the invention utilizing a single pressure roller;
  • FIG. 1(a) shows an adjusting device which may be of any conventional nature but which controls the positioning of a work gear.
  • FIG. 2 shows a modified arrangement using a pair of pressure rollers
  • FIG. 3 is a view essentially as shown in FIG. 1 except that the die roll gear is a single integral tool gear.
  • the apparatus comprises a base 7 carrying a power rotated shaft 4 having a chuck 6 for holding a composite die roll gear comprised of guide gear 1 flanked by chamfer gears 2 and 3 secured as an integral unit, all as heretofore described in the previously filed application.
  • the guide roll gear extends upwardly from the chuck which presents a top bearing surface for sliding support of an internal work gear 10.
  • the lower radial face of the work gear thus rests on the chuck, or for that matter, on any other suitably rigid surface while the upper radial surface of the work gear is engageable by a holder member 16 in the form of a cylindrical cup and which is vertically and horizontally adjustable as by any suitable adjusting means K which may be of completely conventional construction.
  • the adjustment is such that sliding clearance between the bottom edge of member 16 and the upper face of the work gear is provided so as not to cause any clamping of the work gear.
  • the presence of the member 16 will prevent any axial displacement of the work gear to any significant degree and will support axial stresses in order to insure proper engagement with the chamfering rolls and symmetrical chamfering.
  • a large pressure feed roller 12 is mounted freely rotative on a slide 5 and disposed to bear on the outer surface 11 of work gear 10 at a point which will be understood to effect a radial pressure against the engaged teeth of the tool or die roll gear and the work gear. From a geometric standpoint, the point of tangency of pressure roller 12 with the work gear would be in a radial plane with the engaging teeth at the point of greatest engagement, as will be apparent to persons skilled in the machine design arts.
  • the pressure roller 12 is journaled to be freely rotated on the slide 5 as the roller bears against the work gear rotated by the tool gear.
  • Slide 5 is guided in tracks 9 on base plate 7.
  • the slide is power reciprocated by piston rod 17 of hydraulic motor piston 8 in a well known manner and in a general construction as described in the previously filed application.
  • the roller 12 bears against the work gear periphery to progressively increase engagement in order to produce a fully finished smoothing and chamfering operation.
  • the work gear is thus seen as being slidably carried, i.e., having a floating mount but restrained from moving in any direction except that required for the finishing operation.
  • Any conventional bi-planar adjustable mechanism K may be used which will be understood to be fixed to ground or to the base plate 7 and adjustments may be made during the course of an operation as necessary by simple hand screws or the like.
  • Yoke 13 is reversibly movable as by the hydraulic system described in FIG. 1 and as indicated by the double headed arrow in FIG. 2.
  • FIG. 3 is a section similar to FIG. 1, the difference being that the die roll gear 1A is made of a single integral gear rather than by a composite gear as described in FIG. 1, to engage work gear 10A and having greater width so as to extend at both sides as shown.
  • a die roll apparatus for finishing internal gear teeth comprising a power rotated chuck for a die roll gear and a support member for slidably supporting the radial face of an internal gear in mesh with a die roll gear disposed internally of said internal gear and rotated by said chuck;
  • pressure roller means disposed to engage the exterior of the said internal gear to feed said gear in sliding movement on said support member into said die roll gear while said die roll gear is rotating;
  • said pressure roller means comprising a rotatively mounted pressure roller disposed to exert pressure against said internal gear exteriorly thereof and means carrying said roller to exert tooth engaging force on said internal gear to effect working of the teeth thereof by said die roll gear.
  • a die roll apparatus as set forth in claim 1, and said pressure roller means comprising a pair of spaced rollers disposed to exert pressure against said internal gear exteriorly thereof and means carrying said rollers to exert tooth engaging force on said internal gear to effect working of the teeth thereof by said die roll gear.
  • said means disposed to be engageable with the opposite radial face of said internal gear to limit axial displacement comprising a member having a surface engageable with said opposite radial face of said internal gear and adjusting means to locate said member surface relative to said gear face with clearance to permit sliding of said internal gear while being worked.
  • a die roll apparatus as set forth in claim 1, and said pressure roller means comprising at least one freely rotative pressure roller disposed to exert tooth engaging force against said internal gear exteriorly thereof; and reciprocal means carrying said roller to exert said tooth engaging force by progressive linear movement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Processing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US00180004A 1970-09-24 1971-09-13 Die roll apparatus for internal gears Expired - Lifetime US3765202A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2047037A DE2047037C3 (de) 1970-09-24 1970-09-24 Einrichtung zum Glätten und/oder spanlosen Entgraten von Zahnrädern mit Innenverzahnung

Publications (1)

Publication Number Publication Date
US3765202A true US3765202A (en) 1973-10-16

Family

ID=5783266

Family Applications (1)

Application Number Title Priority Date Filing Date
US00180004A Expired - Lifetime US3765202A (en) 1970-09-24 1971-09-13 Die roll apparatus for internal gears

Country Status (5)

Country Link
US (1) US3765202A (fr)
CH (1) CH540736A (fr)
DE (1) DE2047037C3 (fr)
FR (1) FR2106225A5 (fr)
GB (1) GB1356597A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5295378A (en) * 1992-08-05 1994-03-22 Mark Industries Method for making a precisely machined part
US20090113971A1 (en) * 2007-11-01 2009-05-07 Firth Rixson Limited Ring mill apparatus and method
US20110232092A1 (en) * 2008-12-16 2011-09-29 Miba Sinter Austria Gmbh Method and apparatus for backing the insde teeth of a sliding sleeve produced by way of powder metallurgy for a manual transmission

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10258549B4 (de) * 2002-11-11 2016-08-25 Profilator Gmbh & Co. Kg Verfahren und Vorrichtung zum Entgraten von Zahnrädern
ATE473819T1 (de) * 2007-08-03 2010-07-15 Wolfgang Linnenbrink Arbeitsverfahren einer zahnradbearbeitungsmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US309082A (en) * 1884-12-09 Tire-rolling machine
US2925003A (en) * 1958-09-30 1960-02-16 Lombard Corp Ring mill
US3233518A (en) * 1963-12-05 1966-02-08 Nat Broach & Mach Method and apparatus for chamfering gear teeth
US3636744A (en) * 1970-05-18 1972-01-25 Lear Siegler Inc Internal gear rolling machine
US3677052A (en) * 1970-05-01 1972-07-18 Lear Siegler Inc Ring gear rounder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US309082A (en) * 1884-12-09 Tire-rolling machine
US2925003A (en) * 1958-09-30 1960-02-16 Lombard Corp Ring mill
US3233518A (en) * 1963-12-05 1966-02-08 Nat Broach & Mach Method and apparatus for chamfering gear teeth
US3677052A (en) * 1970-05-01 1972-07-18 Lear Siegler Inc Ring gear rounder
US3636744A (en) * 1970-05-18 1972-01-25 Lear Siegler Inc Internal gear rolling machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5295378A (en) * 1992-08-05 1994-03-22 Mark Industries Method for making a precisely machined part
US20090113971A1 (en) * 2007-11-01 2009-05-07 Firth Rixson Limited Ring mill apparatus and method
US7596979B2 (en) * 2007-11-01 2009-10-06 Firth Rixson Ring mill apparatus and method
US20110232092A1 (en) * 2008-12-16 2011-09-29 Miba Sinter Austria Gmbh Method and apparatus for backing the insde teeth of a sliding sleeve produced by way of powder metallurgy for a manual transmission
US8893386B2 (en) * 2008-12-16 2014-11-25 Miba Sinter Austria Gmbh Method and apparatus for backing the inside teeth of a sliding sleeve produced by way of powder metallurgy for a manual transmission

Also Published As

Publication number Publication date
DE2047037C3 (de) 1974-12-19
DE2047037A1 (de) 1972-03-30
FR2106225A5 (fr) 1972-04-28
CH540736A (de) 1973-08-31
GB1356597A (en) 1974-06-12
DE2047037B2 (de) 1974-05-30

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