US3541889A - Apparatus for automatically reversing the direction of rotation of a shaft,with continually varying amounts of angular rotation thereof - Google Patents

Apparatus for automatically reversing the direction of rotation of a shaft,with continually varying amounts of angular rotation thereof Download PDF

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Publication number
US3541889A
US3541889A US803870A US3541889DA US3541889A US 3541889 A US3541889 A US 3541889A US 803870 A US803870 A US 803870A US 3541889D A US3541889D A US 3541889DA US 3541889 A US3541889 A US 3541889A
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United States
Prior art keywords
shaft
gear
rotation
gears
reversing
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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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US803870A
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English (en)
Inventor
Heinrich Peter Weller
Josef Mehl
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Individual
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Individual
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Filing date
Publication date
Priority claimed from DE19681650786 external-priority patent/DE1650786A1/de
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Publication of US3541889A publication Critical patent/US3541889A/en
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Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/08—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary motion and oscillating motion
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19251—Control mechanism
    • Y10T74/19279—Cam operated

Definitions

  • the shaft for driving the mechanism that raises and lowers a bank of circular holes on a thread-winding machine is driven by a reversing gear mechanism which is operated by a control switch actuated by two eccentric, rotatable cam disks carried by angularly spaced support arms mounted on the shaft.
  • the cam disks are driven by a train of gears which are turned in one direction by a main driving gear, connected to the shaft by a one-way clutch so that it can turn therewith in one direction only.
  • Another gear meshing with the driving gear is free to turn in one direction only on a stationary shaft, and serves to brake said driving gear when the shaft turns in the other direction.
  • the train of gears connected to the cam disks is driven by a third gear fixed to the shaft and meshing with a fourth gear turning on a shaft mounted eccentri cally on the driving gear, said fourth gear being one of said train of gears driving the cam disks.
  • the eccentric cam disks revolve with the shaft, they increase or decrease the angular distance between their switch-contracting edges, thereby continually varying the angular travel of the shaft between reversals in direction.
  • This invention relates to apparatus for reversing the direction of rotation of a drive shaft each time that the latter has turned through a predetermined angle of rotation.
  • the invention is particularly adapted for use in connection with a mechanism driven by the said drive shaft for producing a raising and lowering movement of a bank of circular holes, of the type used in thread winding machines. More specifically, the invention is concerned with a mechanism of the character described in which the reversing action is independent of the angle of rotation of the shaft and in which the angle of rotation is varied continually between reversals in direction without stopping the machine.
  • This type of action is particularly desirable whenever a raising and lowering movement of the bank of circular holes of a winding machine is to be changed over to the unwinding of the threads from the spindles. In this way, the threads can be wound up in a designated way and the formation of the exact pattern of thread winding can be obtained.
  • Prior mechanisms of this type are capable of producing only a limited number of types of winding, and therefore do not have suflicient variations and possibilities.
  • the primary object of the invention is to ice provide an apparatus which is capable of continuously changing the size of the angle of rotation of the forwardand-reverse rotating shaft, and in so doing also makes possible a corresponding variation in the raising and lowering movement of the bank of circular holes on the wind ing machine.
  • the invention also provides for an additional drive gear train for the advancement of the cam disks, which is controlled by the shaft in question, and likewise set in motion thereby.
  • the invention provides that the said additional drive gear train for the advancement of the cam disks by the forward and reverse rotation of the shaft includes a revolving wheel which moves only in one direction with the said shaft, and this revolving wheel is positively prevented from turning in the other direction by a brake.
  • the said revolving wheel has an eccentric stub axle extending parallel to the drive shaft, and journaled on this stub axle is a first pair of integral gears, one of which is meshed with a gear fixedly mounted on the shaft.
  • the other of the pair of integral gears is meshed with one of a second pair of integral gears, which revolves freely on the shaft; the other of said second pair of gears being meshed with two adjacent gears, each of which is fixedly mounted on a shaft that also has a curved cam disk secured thereon.
  • These last-named shafts are each rotatably supported by an arm mounted on the forwardand-reverse turning drive shaft. As the drive shaft rotates in each direction, one or the other of the said cam disks engages and actuates the reverse control switch, causing the reverse gears to shift to the reverse direction.
  • the above-mentioned revolving wheel and its accompanying brake are preferably equipped with gear wheels, rather than let run free.
  • FIG. 1 is a schematic and perspective representation of the apparatus of the invention, showing the driving gear for raising and lowering a bank of circular holes, of the type used in thread winding machines;
  • FIG. 2 is a longitudinal section through the same, showing the driving gear being driven in one direction; and I FIG. 3 is a similar view, showing the driving gear being driven in the other direction.
  • a reversing gear set 2 which drives a shaft -3 in one direction or the other, as shown by the arrow a in FIG. 1.
  • the driving connection between the reversing gear set 2 and the shaft 3 results from the fact that the gear set 2 drives a worm screw 2a in one direction or the other, and worm screw 2a meshes with a Worm gear 3a, which is fastened to the shaft 3.
  • the forward and reverse rotational movement of the shaft 3 is converted, in the illustrated example, into a raising and lowering movement for a bank of circular holes 4 on a thread winding machine (not shown).
  • This is accomplished by means of a sprocket wheel 5 mounted on the shaft 3, which is connected by a chain 6 to an overhead sprocket wheel 8 fixedly mounted on a rotatable shaft 7.
  • a sprocket wheel 9 which likewise drives a lifting chain 10.
  • Attached to one end of the lifting chain 10 is a pulling strap 11, which passes over a freely turning roller 12 and down to the bank of circular holes 4, to which it is fastened.
  • the bank of circular holes 4 is raised or lowered, depending upon which direction the shaft 3 is rotating.
  • the extent of raising and lowering of the bank of circular holes 4 can be regulated by correspondingly regulating the angular distance through which the shaft 3 rotates, in order to get the desired kind of winding of the threads.
  • the arrangement for the continual and self-activating gear for driving the shaft 3 is composed entirely of a gear train 14, which actuates the reversing gear switch 2b of the reversing drive gear 2.
  • the gear train 14 is controlled by the shaft 3 and comprises a rotating body in the form of a gear wheel 15, which is connected to the shaft 3 to be driven thereby in one direction only by means of a one-way clutch 18.
  • the gear wheel 15 meshes with a smaller gear 16 which is rotatably supported on a stationary axle shaft 17, and gear 16 is likewise connected to shaft 17 by a one-way clutch 19, which allows the gear to turn freely in one direction only.
  • the gearwheel 15 has a stub axle 20 mounted on one side thereof at a distance spaced radially outward from its center of rotation, and the said stub axle projects outwardly from the gear wheel 15 parallel to shaft 3.
  • R0- tatably supported on the stub axle 20 is a pair of integral gears 21 and 22.
  • Gear 21 is meshed with another gear 23, which is fixedly mounted on shaft 3, while gear 22 is meshed with another gear 24, comprising one of two integral gears which are freely rotatable on shaft 3.
  • the other gear 25 of this last-named pair meshes with two angularly spaced gears 26a and 26b.
  • Each of these two gears 26a and 26b is fixedly mounted on a shaft 27a and 27b, respectively, and these are supported, in turn, by arms 28a and 28b, respectively. Also mounted on shafts 27a and 27b are shifting cam disks 29a and 2912, respectively, which engage and trip the reversing switch 212 to reverse the direction of rotation of the shaft 3.
  • this driving gear train in the two directions of rotation of the shaft 3 is as follows:
  • the one-way clutch 18 locks the gear wheel 15 to the shaft so that they rotate as one.
  • the one-way clutch 19 allows the smaller gear 16 to free wheel on its shaft 17. All of the remaining gears and related parts of the driving gear train 14, including the cam disks 29a and 2%, remain stationary on their respective shafts, and merely revolve with the shaft 3.
  • each of the gears 26a and 26b is rotated through a relatively small, predetermined angular distance each time that the shaft 3 oscillates in the direction of the arrow a", and due to the eccentricity of the cam disks 29a, 2%, this has the effect of continually varying the angular distance between the switch-contacting outer edges of the cam disks, with a corresponding continual variation in the angular distance of rotation of shaft 3 between reversals in direction, which is likewise reflected in the vertical distance traveled by the bank of circular holes 4.
  • cam disks 29a and 2911 By suitably forming the cam disks 29a and 2911, one can obtain the result whereby the cam disks actuate the control switch 2b of the reversing gear set 2 at any desired angular interval, so that the raising and lowering movement of the circular ring bank 4 is accomplished in a suitably controlled manner.
  • Apparatus for producing a forWard-and-reverse rotation of a shaft with continually varying angular dis tance of rotation between reversals comprising a reversing gear set driving said shaft, a control switch for operating said reversing gear set, and means for actuating said control switch each time said shaft oscillates through a predetermined angular distance, said means being characterized by a train of gears driven by said shaft, and a cam disk mounted on said shaft to rotate therewith, said cam disk being driven by said train of gears, and said cam disk being operable to engage and actuate said control switch at one end of the angular distance traveled by said shaft, said cam disk having a configuration such that as it rotates it varies the angular distance traveled by said shaft before said control switch is actuated.
  • said train of gears comprises a first gear (15) connected with said shaft (3) to rotate therewith in one direction only, brake means (16, 19) operable to brake said first gear (15) against rotation in the other direction, a stub axle (20) mounted on said first gear (15) at a distance spaced radially outward from said shaft (3) and parallel thereto, a pair of integral gears (21., 22) journaled on said stub axle (20), a drive gear (23) fixed to said shaft (3) and meshing with one of the gears (21) of said pair, the other gear (22) of said pair meshing with one gear (24) of another pair of integral gears (24, 25) freely rotatable on said shaft (3), the other gear (25) of said other pair meshing with a pair of gears (26a, 26b) mounted on shafts (27a, 27b) carried by arms (28a, 28b) on said shaft (3), and said cam disks (29a, 2911) being mounted on said shafts (27a, 27b) to
  • said train of gears comprises a first gear (15) connected with said shaft (3) to rotate therewith in one direction only, brake means (16, 19) operable to brake said first gear (15) against rotation in the other direction, a stub axle (20) mounted on said first gear (15) at a distance spaced radially outward from said shaft (3) and parallel thereto, a pair of integral gears (21, 22) journaled on said stub axle (20), a drive gear (23) fixed to said shaft (3) and meshing with one of the gears (21) of said pair, the other gear (22) of said pair meshing with one gear (24) of another pair of integral gears (24, 25) freely rotatable on said shaft (3), the other gear (25) of said other pair meshing with a gear (26a) mounted on a shaft (27a) carried by an arm (28a) on said shaft (3), and said cam disk (29a) being mounted on said shaft (27a) to rotate therewith.
  • said brake means comprises a gear (16) meshing with said first gear (15) and supported on a one-way clutch (19) for rotation only in the direction when driven by said first gear (15) turning in said one direction.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
US803870A 1968-03-01 1969-03-03 Apparatus for automatically reversing the direction of rotation of a shaft,with continually varying amounts of angular rotation thereof Expired - Lifetime US3541889A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681650786 DE1650786A1 (de) 1968-03-01 1968-03-01 Einrichtung zur Erzeugung einer hin- und hergehenden Drehbewegung einer Welle mit selbsttaetiger Steuerung der Drehwinkelgroesse,insbesondere zur Ableitung einer Hub- und Senkbewegung von der Welle fuer die Ringbaenke von Zwirnmaschinen

Publications (1)

Publication Number Publication Date
US3541889A true US3541889A (en) 1970-11-24

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US803870A Expired - Lifetime US3541889A (en) 1968-03-01 1969-03-03 Apparatus for automatically reversing the direction of rotation of a shaft,with continually varying amounts of angular rotation thereof

Country Status (4)

Country Link
US (1) US3541889A (fr)
CH (1) CH497654A (fr)
FR (1) FR2003060A1 (fr)
GB (1) GB1212475A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10124454B2 (en) 2015-11-16 2018-11-13 Apex Brands, Inc. Oscillating thrust bearing
US10583538B2 (en) 2015-11-16 2020-03-10 Apex Brands, Inc. Feed oscillation via variable pitch gears
US10232446B2 (en) 2015-11-16 2019-03-19 Apex Brands, Inc. Adaptive drilling with piezo-electric feed oscillator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241385A (en) * 1962-06-22 1966-03-22 Lionel Toy Corp Torque actuated reversible gear reduction assembly
US3319494A (en) * 1964-10-22 1967-05-16 Ingersoll Rand Co Dual-speed fastener driving tool

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241385A (en) * 1962-06-22 1966-03-22 Lionel Toy Corp Torque actuated reversible gear reduction assembly
US3319494A (en) * 1964-10-22 1967-05-16 Ingersoll Rand Co Dual-speed fastener driving tool

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Publication number Publication date
CH497654A (de) 1970-10-15
FR2003060A1 (fr) 1969-11-07
GB1212475A (en) 1970-11-18

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AT72427B (de) Einrichtung an Ringspinn- und Ringzwirnmaschinen zur selbsttätigen Änderung der Spindelumdrehungszahl entsprechend den Schwankungen des Aufwindungsdurchmessers.