US3818735A - Roller head for cold rolling of splined shafts or gears - Google Patents

Roller head for cold rolling of splined shafts or gears Download PDF

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Publication number
US3818735A
US3818735A US00353900A US35390073A US3818735A US 3818735 A US3818735 A US 3818735A US 00353900 A US00353900 A US 00353900A US 35390073 A US35390073 A US 35390073A US 3818735 A US3818735 A US 3818735A
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US
United States
Prior art keywords
rollers
roller head
axis
spindle
ring
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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
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US00353900A
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English (en)
Inventor
E Grob
H Krapfenbauer
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Individual
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Individual
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Publication date
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Publication of US3818735A publication Critical patent/US3818735A/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

Definitions

  • FIG. 4 is a development view according to one embodiment of the present invention illustrating the saw tooth-shaped sectional profile of the thrust ring surfaces along with a complete set of rollers with their spacer discs;
  • FIG. 5 is a development view according to another embodiment of the present invention illustrating the circumferences of the thrust rings where the thrust surfaces appear as a common straight line along with a complete set of rollers;
  • FIG. 6 is a development view according to still another embodiment of the present invention illustrating the saw toothed-shaped thrust surfaces of the thrust rings along with a complete set of rollers without spacer discs.
  • the big cylindrical member 8 fitted on the spindle 1 at its upper end is a counter-balance weight to compensate the weight of the coupling 9 (at the lower end of the spindle) and of the articulated driving shaft (not shown), which drives the roller head spindle.
  • Each roller includes one or several ring-shaped circumferential ribs 3' for rolling the grooves of approximately cylindrical work pieces.
  • These work pieces may be shafts on which straight or helical mutually parallel grooves forming splines are rolled, or they may be gears on which straight or helical mutually parallel grooves forming notches between the gear teeth are rolled.
  • the rollers 3 are mounted to rotate in a planetary fashion about the axis a-a. The number, size and profile of the ribs depends on the size and profile of the grooves or notches to be rolled into the work piece.
  • the inclined butting surfaces 5' of the thrust rings 5 can be produced by radial shaping or milling of approximately sector-shaped parts of one face of each thrust ring 5 followed by grinding to conform to the required inclination. Two different embodiments of the thrust are possible.
  • the first embodiment consists in that the individual inclined surfaces 5' of each thrust ring 5 each lie at the same distance from the opposite flat surface 5" thereof so that in the planar development of the circumference of the thrust ring they would have the appearance of saw teeth (FIGS. 4 and 6).
  • FIG. 5 consists in that the individual inclined surfaces 5 of each thrust ring 5 lie at an increasing distance, between adjacent rollers, from the opposite flat surface 5" of its respective thrust ring. This distance is l/nth of the spacing of the circumferential ribs 3' measured on a respective roller when n rollers are used.
  • the thrust ring 5 therefore, they appear in the form of segments of a straight line, for all rollers.
  • all rollers can have a normal construction, i.e., they are symmetrical and therefore exchangeable at will and, further, no spacing discs are required. In short, the possibility of an installation error is impossible.
  • This solution therefore, is the most desirable from the manufacturing and operational points of view of those exemplarily disclosed.
  • roller head according to the invention is intended to be used in a rolling process in which the inclined position of the rollers is desired but not their displacement, then the necessary embodiment consists in the identity of all rollers.
  • the improvement further comprises a plurality of spacer discs, wherein there are n rollers each of equal length and each having at least two axially spaced ring-shaped profiles defining an axial spacing therebetween, and wherein each roller has a spacer disc at each axial end thereof between its axial end surface and the corresponding inclined surface of said axial end surface, with the thickness of said discs at one axial end of said rollers increasing between adjacent rollers by l/nth of said axial spacing and at the other axial end of said rollers decreasing by an equivalent llnth value between adjacent rollers, so that adjacent rollers are axially displaced one from the other by the difference in thickness of their respective spacers.
  • rollers are identical.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
US00353900A 1972-04-21 1973-04-23 Roller head for cold rolling of splined shafts or gears Expired - Lifetime US3818735A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2219663A DE2219663A1 (de) 1972-04-21 1972-04-21 Rollkopf zum kaltwalzen von vielkeilwellen oder zahnraedern

Publications (1)

Publication Number Publication Date
US3818735A true US3818735A (en) 1974-06-25

Family

ID=5842878

Family Applications (1)

Application Number Title Priority Date Filing Date
US00353900A Expired - Lifetime US3818735A (en) 1972-04-21 1973-04-23 Roller head for cold rolling of splined shafts or gears

Country Status (4)

Country Link
US (1) US3818735A (enExample)
CH (1) CH564392A5 (enExample)
DE (1) DE2219663A1 (enExample)
FR (1) FR2181031B3 (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5546781A (en) * 1993-02-25 1996-08-20 Ernst Grob Ag Process for the production of a toothed rack via cold forming, the rack produced thereby, and an apparatus for practicing the process
US5911939A (en) * 1994-06-17 1999-06-15 Miniflex Limited Apparatus and method for preparing cylindrical surfaces
CN114789216A (zh) * 2022-04-22 2022-07-26 西安理工大学 一种柔性化高速冷滚打成形装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2376727A (en) * 1939-09-21 1945-05-22 Schutte Albert Device for making screw threads
DE1016222B (de) * 1951-05-16 1957-09-26 Ernst Grob Verfahren und Vorrichtung zum Erzeugen gerader oder zur Werkstueckachse schraeg verlaufender, paralleler Profile, z.B. von Verzahnungen, durch einen Walzvorgang
DE1021328B (de) * 1952-06-03 1957-12-27 Continental Gummi Werke Ag Verfahren zur Herstellung von wasserdichten Stoffen
US3365924A (en) * 1965-10-22 1968-01-30 Nat Acme Co Taper threading implement
US3452567A (en) * 1966-02-01 1969-07-01 Rotary Profile Anstalt Head for rolling threads or like formations

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2376727A (en) * 1939-09-21 1945-05-22 Schutte Albert Device for making screw threads
DE1016222B (de) * 1951-05-16 1957-09-26 Ernst Grob Verfahren und Vorrichtung zum Erzeugen gerader oder zur Werkstueckachse schraeg verlaufender, paralleler Profile, z.B. von Verzahnungen, durch einen Walzvorgang
DE1034127B (de) * 1951-05-16 1958-07-17 Ernst Grob Verfahren zum Erzeugen gerader oder zur Werkstueckachse schraeg verlaufender, paralleler Profile, z. B. von Verzahnungen, durch einen Walzvorgang und Einrichtung zur Durchfuehrung dieses Verfahrens
DE1021328B (de) * 1952-06-03 1957-12-27 Continental Gummi Werke Ag Verfahren zur Herstellung von wasserdichten Stoffen
US3365924A (en) * 1965-10-22 1968-01-30 Nat Acme Co Taper threading implement
US3452567A (en) * 1966-02-01 1969-07-01 Rotary Profile Anstalt Head for rolling threads or like formations

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5546781A (en) * 1993-02-25 1996-08-20 Ernst Grob Ag Process for the production of a toothed rack via cold forming, the rack produced thereby, and an apparatus for practicing the process
US5911939A (en) * 1994-06-17 1999-06-15 Miniflex Limited Apparatus and method for preparing cylindrical surfaces
CN114789216A (zh) * 2022-04-22 2022-07-26 西安理工大学 一种柔性化高速冷滚打成形装置
CN114789216B (zh) * 2022-04-22 2023-08-22 西安理工大学 一种柔性化高速冷滚打成形装置

Also Published As

Publication number Publication date
FR2181031B3 (enExample) 1976-04-09
FR2181031A1 (enExample) 1973-11-30
CH564392A5 (enExample) 1975-07-31
DE2219663A1 (de) 1973-10-25

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