US3695078A - Method and apparatus for roll-forming or roll-finishing gear pieces - Google Patents

Method and apparatus for roll-forming or roll-finishing gear pieces Download PDF

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US3695078A
US3695078A US89916A US3695078DA US3695078A US 3695078 A US3695078 A US 3695078A US 89916 A US89916 A US 89916A US 3695078D A US3695078D A US 3695078DA US 3695078 A US3695078 A US 3695078A
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workpiece
die member
axis
rotation
feed motion
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US89916A
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English (en)
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Norman G Bruinsma
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Gleason Works
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Gleason Works
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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
    • B21H5/04—Making gear wheels, racks, spline shafts or worms bevel gears
    • B21H5/045—Finishing bevel gear teeth, 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

Definitions

  • FIGURE 8 BY W 62 NORMAN G. BRUINSMA SHEET 0F 6 NORMAN G. BRUI NS MA INVENTOR.
  • the present invention relates to a method and apparatus for roll-forming of workpieces, being especially useful for rolling generated tooth configurations in geartype elements, particularly in tapered gear members, such as straight bevel, spiral bevel, and hypoid gears.
  • a die member for forming or finishing gear teeth on a workpiece. These terms are intended to describe a too], or other member which may be considered a die member in this art, and a work blank, or its equivalent, upon which gear tooth profiles can be formed by a displacement of metal, or other material, from which the workpiece is fashioned.
  • the die member is formed from a material which is not displaced or changed in its configuration during the roll-forming or finishing of tooth shapes on the workpiece.
  • the workpiece may be in the form of a blank having no initial tooth profile formations at all, or it may have partially formed tooth profiles prior to further roll shaping in accordance with this invention.
  • Other terminology which describes specific relation ships and motions between working members, as used in this specification, will be defined in detailed descriptions later or with reference to drawings illustrating various features of the invention.
  • the instantaneous axis of rotation is the common pitch cone element at any given instant, of the pitch cones of two rolling members.
  • Axial feed of at least the die member has been utilized for this purpose and, when tapered die members have been used, axial feeds of both the die member and the gear member have been required.
  • prior art efforts have concentrated on providing for relatively complex and costly methods and apparatus for axially displacing both a die member and a workpiece, at controlled rates, along their respective axes during roll-forming or roll-finishing operations for tapered gears.
  • the present invention departs from prior art practices by eliminating any necessary requirement for axial feed of either a die member or a workpiece during a roll-forming or roll-finishing operation.
  • the feed motion provided is still essentially perpendicular, at any given instant, to the instantaneous axis of rotation of the die member and workpiece being brought together into rolling engagement.
  • This feed motion is accomplished by pivoting the die member and the workpiece, relative to each other, about an axis which is substantially coincident with a common normal to the center axes of both the die member and the workpiece. It should be appreciated that such center axes do not necessarily have to interest, e.g.
  • pivotal motion of this invention is not a mere provision for adjustment or setting of angular position of a die member relative to a workpiece but rather constitutes a feeding motion for maintaining particular relationships between a die member and a workpiece during roll formation or finishing of tooth profiles on the workpiece.
  • gear geometry can be manipulated and controlled with relatively simple machinery.
  • the pivotal feed motion of the present invention provides for a relatively simple means of modifying the turning ratio between die member and workpiece in proportion to the feed rate, and this is important where an unbalanced pressure angle profile is desired in the finished gear piece.
  • the position of the instantaneous axis of rotation between a die member and a workpiece can be controlled by a choice of the pitch cone angle for the die member, and this offers desirable effects on tooth geometry and on material flow in the workpiece.
  • Apparatus for practicing the method of the present invention provides for first and second spindle means which carry a die member and a workpiece, respective ly.
  • the spindle means are positioned and mounted in such a way that one of the spindles can be pivotally moved about an axis substantially coincident with a common normal to the center axes of the die member and the workpiece so as to bring the die member into progressive engagement with the workpiece to a desired depth limit.
  • driving means arev provided for' rotating at least one of the spindles, and,the die member or workpiece associated therewith, so that a rolling engagement is achieved between the die member and the workpiece during progressive engagement of the two.
  • the apparatus is relatively simple and strong with no heavily loaded splines for axial feeds. Further, a rela- -tively short and lightly loaded gear train can be used, and loads on bearings are reduced.
  • FIG. 1 is a schematic illustration depicting prior art practices for roll formation of gears
  • FIG. 2 is a schematic illustration of geometric relationships involved in the method of the present invention.
  • FIG. 3 is an illustration of the die member and workpiece shown in FIG. 2 after experiencing a pivotal feed motion of the type contemplated by the present invention
  • FIG. 4 is an enlarged schematic illustration showing steps of progressive, rolling engagement between a die member and a workpiece when the die member is in 1 the form of a crown gear or near-crown gear
  • FIG. 5 is an illustration similar to FIG. 4 to depict relationships when the die member is in the form of a I tapering tool;
  • FIG. 6 is a schematic illustration of one form of shrouding means which may be utilized in combination with the die member or workpiece;
  • FIG. 7 is a schematic elevational view of a simple form of apparatus for carrying out the method of the present invention
  • I .FIG. 8 is an enlarged schematic view taken on lines 8 8 of FIG. 7 for illustrating a particular driving means for a die member and a workpiece;
  • FIG. 9 is an elevational view, somewhat similar to FIG. 7 but from an opposite side of a machine, for illustrating means for applying pivotal movement to a die member relative to a workpiece;
  • FIG. 10 is an elevational view, partly in cross section, for illustrating a means for selectively controlling the relative rotational movement between the die and workpiece in timed relation'with the pivotal infeedmotion of the die member;
  • FIG. 11 is an enlarged schematic view of a cam and wedge means incorporated in the machine of FIG. 10;
  • FIG. 12 is an enlarged view of a follower means associated with the wedge means of FIG. 1 1;
  • FIG. 13 is an enlarged sectional view of feed motion relationships between a die member and a tooth profile being formed in a workpiece where both the die member and the workpiece are rotated during rollforming engagement in a ratio according to their tooth numbers;
  • FIG. 14 is a view similar to FIG. 13, but illustrating the resulting helical-like feed motion relationship when there is a certain control of the rotational infeed which results from pivotal feed of the die member relative to a workpiece; and I FIG. 15 illustrates a further degree of infeed control from what is shown in FIG. 14, for producing a negative inclination on one side of a helical tooth profile.
  • FIGS. 1 through 3 illustrate basic geometric relationships between die members and workpieces for showing a comparison of the method of the present invention with the methods of prior art techniques.
  • the prior art practice has been one of positioning a die member or tool 10 to engage and deform a workpiece l2 and to thereby impart tooth profile configurations into the material of the workpiece.
  • the die member 10 is provided with shaped tooth configurations 14 which dictate profile configurations for tooth formations on the workpiece 12 when the die member and the workpiece are engaged and rolled about the respective axes l6 and 18 of the die member and theworkpiece.
  • the axes l6 and 18 may be considered center axes of rotationfor the die member and the workpiece, respectively, and will be referred to as such in this specification. It can be appreciated that whatever the system is for bringing a die member and a workpiece into rolling engagement, there must be some means for advancing the tooth forming portion of the die member into the material of the workpiece to a desired depth limit.
  • the prior art practice has been one of providing for a relative feed motion which brings the pitch cone surfaces of the die member and the workpiece together in a direction which is perpendicular to their instantaneous axis of rotation (line 19 in FIG. 1).
  • FIGS. 2 and 3 illustrate basic geometric relationships involved in the pivotal feed motion of the present invention.
  • a die member 10 which may be in the form of a tool having tapered gear teeth thereon, is positioned for engagement with a similarly tapered workpiece blank 12, which is illustrated as having no initial tooth slots or profiles formed therein.
  • the novel pivotal feed motion is in the direction of the arrow in FIG.
  • axis 22 an imaginary line extending perpendicularly out of the plane of the drawings
  • the pitch cone apexes of a die and workpiece may share a common point as shown in FIG. 3, or they may be offset from each other along axis 22, (e.g., as may be the case when rolling with hypoid relationship). Also, both apexes may in some cases be positioned slightly displaced from axis 22.
  • FIG. 3- illustrates the relative positioning of a die member and a workpiece 12, of the type shown in FIG. 2, at the instant when the two are brought into rolling engagement.
  • the engagement illustrated in FIG. 3 is one of initial rolling contact between the die member and the workpiece along the instantaneous axis of rotation 26 defined between the two.
  • the pivotal feed motion of the present invention comprises a relative movement between the die member and the workpiece substantially aboutaxis 22, which is substantially coincident with the common normal to the axes 16 and 18 of both the die member and the workpiece'This may be accomplished by pivoting the die member alone about axis 22, by pivoting the workpiece alone about axis 22, or by pivoting both members about the axis with controlled rates of movement.
  • the basic feed motion is generally arcuate in its path of movement, and the path is generally defined as being about a a specific axis location.
  • this feed motion is to define it with reference to the instantaneous axis of rotation (i.e., to the pitch cone elements common to both die and workpiece at any given instant I of progressive movement of the die member into the workpiece). It can be seen that the feed motion of the invention herein is one which is essentially perpendicular, at any given instant, to the instantaneous axis of rotation of the die member and the workpiece, and this feed -motion is accomplished without axial feed of either the die member or the workpiece.
  • FIG. 3 also shows instantaneous pitch cone angles A and B, respectively, for both the die member 10 and the workpiece 12, for purposes of defining pitch cone angle in later usage herein.
  • the pivotal feed motion of the present invention requires no axial displacement of either the die member or the workpiece along its respective center axis of rotation.
  • the pivotal feed motion which has been just described is continued to a full limit depth of engagement between the die member and the workpiece.
  • FIG. 2 does not represent a necessary starting position for a rolling operation in accordance with this invention, since only a slight separation of the die member and the workpiece are required at the beginning of each cycle.
  • FIGS. 4 and 5 illustrate further details of relationships and movements between a die member and a workpiece in the'practice of the method of the present invention.
  • FIG. 4 illustrates a die member 10 in the form of a crown gear, or near-crown gear, for engaging and forming gear teeth on a workpiece 12.
  • Such 'a die member has a pitch cone angle equalling, or approximately equalling, and it can be shown that during the relative movement of the diemember 10 towards the workpiece 12 (indicated by the dashed line positions of die member 10) the pitch cone angle C for the workpiece remains virtually constant during forming of the workpiece. This results in a' final pitch line for the rolling process that is approximately equidistant from the root to the'topof the teeth being formed.
  • the center axis of the die member 10 is shown in two relative positions 16 and 16'. These positions represent a pivotal movement of the die member (about an axis 22) from a position just at the instant of initial contact with the workpiece 12, to a full depth position for forming final tooth profile configura tions in the workpiece.
  • the portion of the die member 10 which is illustrated is likewise shown in both of these positions, the position shown in dotted lines being representative of final full depth engagement.
  • the workpiece 12 illustrated in FIG. 4 is a type having an original face cone surface 28 which is smooth and without any tooth slots or initial formations therein prior to rolling engagement with the die member 10.
  • the face cone surface of the die member as defined by the top lands 30 of its teeth, is tangent to the face cone surface 28 of the workpiece at the time of initial contact.
  • the ultimate root cone surface 32 of the workpiece is formed by the top land surface of the die member when the die member has reached its limitfeed position (represented by the position of center axis 16'
  • the ultimate top land surface 34 of teeth formed on the workpiece is defined by the common root surface 36 provided in the teeth of the die member 10. It can be seen that some material of the workpiece is displaced upwardly above the original face cone surface 28 of the blank by the rolling engagement of the die member with the workpiece.
  • Rotation of the die member and the workpiece about their respective center axes l6 and 18 is started sometime during the initial pivotal feed movement which brings the die member into first contact with the workpiece. Rotation is continued for the duration of the infeed movement, and also, for a period of time after the infeed movement has stopped and has reached its limit position (represented by the pivotal displacement of 7. namely, such shrouding-means might provide for inner.
  • FIG. illustrates the same relationships shown in FIG. .4, but a different form of die member is illustrated.
  • the die member 10 of FIG. 5 comprises a tapering tool having a pitch cone angle D substantially less than the.90 angle of a crown gear tool.
  • the pitch cone angle of the workpiece which changes continually during the rolling process, undergoes a greaterchange in a direction towards the roots of the teeth being formed. This change in pitch cone angle is depicted in FIG.
  • the method disclosed herein attains a more natural progressive engagement between a die member and a workpiece than has been possible with prior art arrangements using axial feeding of either or. both the die member and the workpiece.
  • FIG. 6 illustrates one embodiment of the shrouding means which may be utilized in the practice of the present invention.
  • shrouding means In roll-formingprocesses there is a possibility of unwanted displacement of material in a workpiece, and typically, some form of shrouding means is utilized to prevent a displacing or spilling of material from the ends of the tooth configurations andouter shrouding elements to bemounted in inner and outer positions relative to the workpiece 12.
  • the pivotal feed motion required for the method of i this invention can be efiected with relatively simple 0 machinery which is able to withstand the very high pressures and forces developed in a cold rolling operation.
  • drive means rotates either the die member or the workpiece, or both, about their respec-' tive center axes.
  • control means may be provided for synchronizing the rotations of each member.
  • Alternative driving arrangements are also possible, e.g., directly driving either the die member or the workpiece, while applying a braking force to the other one of the two.
  • FIGS. 7 and 8 illustrate, in somewhat schematic form, relatively basic apparatus which may be used for carrying out the method of the present invention.
  • the apparatus which is illustrated is of a type which not only provides for the required pivotal feed motion of, this invention, but which also provides for positive rotation of both a die member and a workpiece with means for synchronizing their rotations during a rolling operation.
  • FIG. 7 shows a machine having a first spindle means being formed in the workpiece.
  • FIG. 6 illustrates a type 40 54 for carrying and rotating a die member 10.
  • a second of shrouding means which can be mounted on a die member 10 for preventing unwanted displacement of material out of the working zone of a workpiece 12.
  • the illustrated shrouding means includes an internal annular surface 44 which closely conforms to the inter- 45 relative to the workpiece. Suitable means, such as nal surface formed by the teeth and slots of the die member 10.
  • the internal element 42 is attached to the die member by any suitable means so as to rotate therewith.
  • the shrouding means also includes an external annular member 46 which has an uninterrupted in- 50 temal surface 48 closely conforming to the outer surface profile of the die member 10.
  • the external element 46 can be fastened directly to the die member, or it can be secured to a portion of a tool support means or spherical in cross section, with their respective radii of curvatures 53A and 53B being taken on centers removed slightly from pivot axis 22 in order to provide necessary clearance as the die member moves into the workpiece.
  • spindle means 56 carries and rotates a workpiece 12.
  • the first and second spindle means are mounted in housings which are positioned relative to one another so that an axis of pivotal movement is maintained at 22 for feeding and withdrawing motions of the die member hydraulic ram system (not shown), is provided for effecting a tilting movement of an upper housing carrying the first spindle means 54 relative to a base housing carrying the second spindle means 56.
  • gear rolling requires a rolling engagement of a tool with a work blank
  • means must be provided for positively driving and rotating either the tool or the blank about its respective axis.
  • driving means such as motor means connected to the upper spindle 54 by drive shaft 58
  • both of the working elements are driven about their respective center axes for effecting a rolling engagement of the two during a gear forming operation.
  • a gear train means is interconnected between the first and second spindle means.
  • the upper spindle means 54 carries a ring gear for rotation therewith, and similarly, the lower spindle means 56-carries a separate ring gear 62 for rotation therewith.
  • an upper pinion gear 64 mates with the upper ring gear 60, and the pinion gear 64 is interconnected to a'helical change gear 66 carried on a pinion shaft 68 fixed to the the pinion gear.
  • the helical change gear 66 mates with another helical change gear 70 carried on a pinion shaft 72 of a second pinion gear 74.
  • Pinion gear 74 mates with the lower ring gear 62 to complete the gear train.
  • the helical change gears 66 and 70 provide a means for changing relative rotational speeds of the die member and the, workpiece.
  • a change in ratio can be effected in the rotational speeds of the two spindles 54 and 56 to provide a desired timed rolling relationship of the die member with the workpiece.
  • the center axis of rotation of the upper pinion gear 64 is coincident with the pivot axis about which the die member is fed relative to the workpiece. This allows for a pivotal movement of the housing associated with the. upper spindle and the die member, while maintaining a fixed center distance between the pinion shafts 68 and 72.
  • pivotal movement of the upper spindle relative to the lower spindle results in a moment of angular rotational displacement of the upper ring gear 60; and this rotational displacement is separate and distinct from any rotational moments applied by the driving means associated therewith or by the synchronizing gear train.
  • This moment of rotational movement of the upper spindle, and the die member carried by it, provides a desired component of helical feed that can be con trolled to provide for uniform displacement of material on both sides of each tooth being formed, as will be I discussed in greater detail later.
  • FIGS. 9 and 10 illustrate more specific forms of machinery for practicing the present invention from what is shown in the basic arrangements of FIGS. 7 and 8.
  • FIG. 9 is directed primarily to mechanisms associated with pivotal feed movement of a die member 10 relative to a workpiece 12; and
  • FIG. 10 is directed primarily to mechanismsv associated with rotating and synchronizing the rotational movement of the die member and the workpiece about their respective center axes.
  • an upper housing 80 of a machine is mounted with a trunnion mounting (not shown in FIG. 9, but indicated at 90 in FIG. 10) that places a trunnion axis on a line which intersects the intersection of the two spindle center axes l6 and 18.
  • the trunnion axis would be perpendicular to the view shown in FIG. 9 and is indicated as axis 22.
  • This arrangement provides for a pivotal movement of the housing 80 about trunnion axis 22 so as to effect the novel infeed motion required for the practice of the method of this invention.
  • the upper. housing 80 contains a first spindle .and support structure for the die member 10 in the manner described with reference to FIG. 7 above.
  • a second housing 79 is carried on a base portion of the machine and is fixed thereto.
  • This housing 79 con- Means for effecting pivotal movement of the upper housing. 80 about axis 22 include a hydraulic ram system 81 which drives a fork 82 having two wedgeshaped tines 83 which straddle upper housing 80, being positioned between the latter and two heavy side plates 84 which are rigidly fixed to the machine base. (Only one tine 83 can be seen in FIG. 9, and only the rear side plate 84 is shown, the other being removed for clarity.) The pair of wedge-shaped tines 83 areguided between cooperating pairs of slideways 85 and 86 (only one pair shown).
  • Each slideway 85 is secured to a respective one of said side plates, while the slideways 86 are formed as part of a pair of flange elements 87 (only one shown) which are connected to opposite sides of upper housing 80 by means of pivots 88 (only one shown).
  • the upper and lower housings of a machine can be adjusted relative to one another through a range of positions which vary the included angle between their axes, permitting the manufacture of gears with a continuum of pitch cone angles.
  • FIG. 10 illustrates details of driving means associated with a gear rolling machine for positively rotating both a die member 10' and a workpiece 12 about their center axes.
  • separate drive motors and drive shafts are provided for rotating an upper spindle means 54 and a lower spindle means 56. These rotations effect a rotation of both the die member 10 and the workpiece 12.
  • the view of FIG. 10 is taken at right angles from the viewv of FIG. 9, and the trunnion means 90 can be seen in the FIG. 10 view.
  • the sliding wedge-shaped tines 83 have been omitted from the FIG. 10 view for the purposes of clarity.
  • the gear train synchronizing system shown in FIG. 10 functions to provide complete control of the natural helical infeed motion associated with pivotal movement of a die member relative to a workpiece in accordance with this invention.
  • upper and lower pinions 64 and 74 are interconnected by a gear train to adjust relative rates of rotation of a die member relative to a workpiece.
  • An upper spur gear 92 drivingly connects the upper pinion 64 with a lower spur gear 94.
  • the lower spur gear 94 is fixedly mounted on the same shaft 95 as an upper helical gear 66 which, in turn, is drivingly connected to a lower helical gear fixed to the pinion shaft 72 of pinion 74.
  • a sliding adjustment of one helical gear relative to the other provides for a change in turning ratios between the pinion shafts 68 and 72.
  • the upper helical gear 66 is axially slidable on its shaft by a splined hub arrangement.
  • shaft 95 uponwhich the helical gear 66 and its associated spur gear 94 are mounted, has an axis progressestowards the workpiece, and such adjustment which is coincident with the pivotal axis 22 about I 97 to fixed structure) which can effect sliding movements of the upper helical gear 66 on its hub in accordance with a positioning of the lever 96 by a wedge block 98.
  • the wedge block 98 is, in'turn, positioned by.
  • cam means 100 which is shaped to dictate a desired sequence of ratio change for relative rotations between -'the die member and the workpiece 12 during a forming operation.
  • the wedge follower means 102 is biased by spring 103 (FIG. 10) against wedge block 98, and it functions to impart changes'in position of the wedge block to the lever means 96 so as to effect sliding movements of the upper helical gear 66.
  • the wedge block means 98 is similarly biased by spring 99 (FIG. .10) so that 'it is normally urged downwardly against the surface profile of the cam means 100, and the cam means 100 is keyed to a shaft of the trunnion mounting of the upper housing 80 so that the' cam rotates in accordance with the pivotal feed motionof the upper housing and its associated die member.
  • cam and lever arrangement just described is only one of many possible means for sliding the helical gear 66, and that this embodiment of the invention can be practiced by using any adjustment means which slides helical gear 66 back and forth through an infinite range of positions on its hub in timed relation to the pivotal feed motion.
  • FIG. 13 represents a feed wherein a die member is brought into rolling contact with a workpiece without any additional component of rotation being imparted to the die member relative to the workpiece.
  • FIGS. 14 and 15 illustrate relative feed directions resulting from additional components of rotation being imparted to a die member relative to workpiece so as to control the approach of the die teeth to the workpiece when rolling workpieces having unsymmetrical tooth slots.
  • the pivotal feed motion of the present invention provides for a relatively simple means by which tooth profile can be precisely adjusted in any given motion setup.
  • the basic pivotal feed motion of this invention can be effected with very strong and a wide range of adjustment are available.
  • a method for roll-forming or roll-finishing tapered gears or the like comprising the steps of:
  • step of rotating is effected by drivingly rotating at least one of said die member or said workpiece about its own center axis.
  • step of rotating is effected by drivingly rotating one of said die member or said workpiece about its own center axis and by applying a braking force to the other of said die member or said workpiece.
  • both saiddie controlling the rates of rotation of said die member and said workpiece about their respective center axes relative to each other and in predetermined relation to said pivotal feed motion.
  • a method for roll-forming or roll-finishing tapered gears or the like comprising the steps of:
  • a machine for roll-forming or roll-finishing tapered gears or the like by rolling together a die member and a workpiece said machine being of a type which includes a first spindle means for carrying the die member for rotation about its center axis, a second spindle means for carrying the workpiece for rotation about its center axis, and driving means for rotating at least one of said spindles and the die member or workpiece associated therewith, the improvement comprismg:
  • controlling means is a gear train interconnecting said first and second spindle means.
  • controlling includes means for varying said relative rates of rotation during said progressive rolling engagement.
  • said pivotal feed motion being essentially perpendicular, at any given instant, to the instantaneous axis of rotation between the die member and the workpiece.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Gear Processing (AREA)
US89916A 1970-11-16 1970-11-16 Method and apparatus for roll-forming or roll-finishing gear pieces Expired - Lifetime US3695078A (en)

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AU (1) AU458095B2 (enrdf_load_stackoverflow)
CA (1) CA947540A (enrdf_load_stackoverflow)
CH (1) CH546106A (enrdf_load_stackoverflow)
DE (1) DE2156660B2 (enrdf_load_stackoverflow)
FR (1) FR2114671A5 (enrdf_load_stackoverflow)
GB (1) GB1339809A (enrdf_load_stackoverflow)
SE (1) SE390386B (enrdf_load_stackoverflow)
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Cited By (10)

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US3985012A (en) * 1975-07-28 1976-10-12 The Gleason Works Apparatus for finish rolling bevel pinions and gears
US4671092A (en) * 1984-09-20 1987-06-09 Nauchno-Issledovatelsky Institut Tekhnologii Avtomobilnoi Promyshlennosti Method and apparatus for hot rolling of bevel gears
US4729232A (en) * 1984-11-08 1988-03-08 Anderson-Cook, Inc. Machines for pressure forming surface configurations on a rotary workpiece
US5722138A (en) * 1994-04-22 1998-03-03 Kubota Iron Works Co., Ltd. Apparatus for manufacturing toothed gears
RU2123406C1 (ru) * 1997-04-21 1998-12-20 Моцыгин Сергей Венедиктович Способ изготовления деталей типа дисков
US6151941A (en) * 1999-01-25 2000-11-28 Federal-Mogul World Wide, Inc. Apparatus and method for roll forming gears
US6711803B1 (en) * 1998-12-25 2004-03-30 Takashima Corporation Method of joining steel products, method of processing junction surfaces of steel products, and reinforcing member
US20050178818A1 (en) * 1998-12-25 2005-08-18 Kiyokazu Kobayashi Method of joining steel members, method of processing joined surface of steel member and reinforcing member
US20110126654A1 (en) * 2009-12-02 2011-06-02 Gm Global Technology Operations, Inc. Bevel and hypoid gear and method of manufacture
EA033971B1 (ru) * 2017-12-13 2019-12-16 Белорусский Национальный Технический Университет Способ холодной сферодвижной штамповки конического зубчатого колеса

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US1240917A (en) * 1913-11-11 1917-09-25 Anderson Rolled Gear Company Gear-rolling machine.
US3583190A (en) * 1968-12-17 1971-06-08 Gleason Works Chipless production of tapered gears having spirally arranged teeth
US3599463A (en) * 1968-12-10 1971-08-17 Teledyne Mid America Corp Gear rolling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1240917A (en) * 1913-11-11 1917-09-25 Anderson Rolled Gear Company Gear-rolling machine.
US3599463A (en) * 1968-12-10 1971-08-17 Teledyne Mid America Corp Gear rolling
US3583190A (en) * 1968-12-17 1971-06-08 Gleason Works Chipless production of tapered gears having spirally arranged teeth

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985012A (en) * 1975-07-28 1976-10-12 The Gleason Works Apparatus for finish rolling bevel pinions and gears
US4671092A (en) * 1984-09-20 1987-06-09 Nauchno-Issledovatelsky Institut Tekhnologii Avtomobilnoi Promyshlennosti Method and apparatus for hot rolling of bevel gears
US4729232A (en) * 1984-11-08 1988-03-08 Anderson-Cook, Inc. Machines for pressure forming surface configurations on a rotary workpiece
US5722138A (en) * 1994-04-22 1998-03-03 Kubota Iron Works Co., Ltd. Apparatus for manufacturing toothed gears
RU2123406C1 (ru) * 1997-04-21 1998-12-20 Моцыгин Сергей Венедиктович Способ изготовления деталей типа дисков
US6711803B1 (en) * 1998-12-25 2004-03-30 Takashima Corporation Method of joining steel products, method of processing junction surfaces of steel products, and reinforcing member
US20050178818A1 (en) * 1998-12-25 2005-08-18 Kiyokazu Kobayashi Method of joining steel members, method of processing joined surface of steel member and reinforcing member
US6151941A (en) * 1999-01-25 2000-11-28 Federal-Mogul World Wide, Inc. Apparatus and method for roll forming gears
US6151778A (en) * 1999-01-25 2000-11-28 Federal-Mogul World Wide, Inc. Apparatus and method for roll forming gears
US20110126654A1 (en) * 2009-12-02 2011-06-02 Gm Global Technology Operations, Inc. Bevel and hypoid gear and method of manufacture
EA033971B1 (ru) * 2017-12-13 2019-12-16 Белорусский Национальный Технический Университет Способ холодной сферодвижной штамповки конического зубчатого колеса

Also Published As

Publication number Publication date
GB1339809A (en) 1973-12-05
FR2114671A5 (enrdf_load_stackoverflow) 1972-06-30
ZA715632B (en) 1972-04-26
CA947540A (en) 1974-05-21
SE390386B (sv) 1976-12-20
DE2156660A1 (de) 1972-05-31
CH546106A (fr) 1974-02-28
DE2156660C3 (enrdf_load_stackoverflow) 1975-04-03
AU3578371A (en) 1973-05-24
AU458095B2 (en) 1975-01-31
DE2156660B2 (de) 1974-08-22

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