EP2435721A1 - Liaison arbre-moyeu à profil polygonal - Google Patents

Liaison arbre-moyeu à profil polygonal

Info

Publication number
EP2435721A1
EP2435721A1 EP10725022A EP10725022A EP2435721A1 EP 2435721 A1 EP2435721 A1 EP 2435721A1 EP 10725022 A EP10725022 A EP 10725022A EP 10725022 A EP10725022 A EP 10725022A EP 2435721 A1 EP2435721 A1 EP 2435721A1
Authority
EP
European Patent Office
Prior art keywords
shaft
corners
hub
hub connection
radius
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.)
Withdrawn
Application number
EP10725022A
Other languages
German (de)
English (en)
Inventor
Petar Gugic
Inge Klobasa
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.)
PIV Drives GmbH
Original Assignee
PIV Drives GmbH
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 PIV Drives GmbH filed Critical PIV Drives GmbH
Publication of EP2435721A1 publication Critical patent/EP2435721A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D1/101—Quick-acting couplings in which the parts are connected by simply bringing them together axially without axial retaining means rotating with the coupling
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D2001/102—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via polygon shaped connections

Definitions

  • the invention relates to a shaft-hub connection with a polygonal profile with rounded corners.
  • Shaft-hub connections are important technical means for transmitting torques.
  • Particularly widespread shaft-hub connections are, for example shaft-hub combinations with actually unsuitable for a transmission of torque fits, in which for the torque transmissions mentioned the shaft-hub connection is provided with at least one key or has a wedge or square profile , Such compounds are known to be relatively difficult to produce in the required quality and precision.
  • a substantially triangular polygon profile is described, which is called “P3G” and is a uniform thickness.
  • This polygon profile represents a special form of a trochoid and in particular has the following characteristic features: This profile has little or no notch effect. It is possible with him a higher torque transmission compared to other form-fitting shaft-hub connections. This is z. B. attributable to missing notch effects that occur at feather key or wedge profiles. Under torque center shaft and hub z. In addition, if such a polygonal profile and circular cross sections are provided on a component, they can be machined in the same clamping Connect shaft collar.
  • the substantially quadrangular polygonal profile "P4C” is proposed according to DIN 32712. This polygonal profile is not only composed of parts of a trochoid but also has circular arc sections.
  • a disadvantage of the shape of the polygon profile "P4C" is that a corresponding hub mount can not be made with loops, but rather the corresponding images must be cleared because of their disharmonic profile shape cost.
  • Object of the present invention is therefore to provide a shaft-hub connection, which has the positive characteristics of the known polygon shaft-hub connections, but in particular also with conventional grinding machines can be produced and in particular also has sandable hubs.
  • This object is achieved in that at a shaft hub connection with a polygonal profile and rounded corners a number of at least two corners is present and the corners with small Radius r1 are rounded and are connected to a section with a large radius R2, wherein adjacent radii tangentially merge into each other.
  • the radius r1 is smaller than the radius rW of the shaft and the radius R2 is greater than this radius rW of the shaft.
  • the shaft-hub connection has a profile with an odd number of corners, wherein the radii of diametrically opposite corners and portions between two corners may have the same center. This gives a so-called equal thickness, the particular z. B. can be easily checked for dimensional accuracy in its production.
  • shaft-hub connection described here has a definable backlash, which facilitates their technical use.
  • not all of the shaft and hub opposite portions extend parallel to each other. Rather, it is provided that two different radii are provided in at least one of two sections lying on the hub and shaft. As a result, an axially extending channel is generated in this area, the need also z. B. for the passage of hydraulic oil, etc. can be used by the profile is not parallel to a corresponding corner or a corresponding portion at a corner or in a lying between these sections.
  • the inventively provided profiles can be produced with conventional numerically controlled machine tools.
  • the circular tool paths to be created are much easier to describe and define than is possible with the equations given in the prior art for polygon profiles "P3G” or "P4C". This is due in particular to the fact that the previous polygonal profiles are only generated as trochoidal. Under a trochoid, the curve is closed understand that describes a point inside or outside a circle that rolls on a base curve, in particular a fixed circle.
  • Figure 1 is a section through a shaft-hub connection with five rounded "corners";
  • Figure 2 is a section through a shaft with two rounded "corners”
  • Figure 3 is a section through a shaft with three rounded "corners”
  • FIG. 4 shows a section through a further shaft for a shaft-hub
  • FIG. 5 shows a section through a shaft-hub connection with four rounded "corners”; [0027] FIG. 6 shows a section through a shaft-hub connection with five rounded "corners”.
  • FIG. 7 shows a section through an embodiment of a shaft with five rounded "corners"
  • Figure 8 shows a section through a hub with nine rounded "corners”
  • Figure 9 shows the longitudinal section through a shaft and a conical disk pair with a shaft-hub connection.
  • FIG. 1 shows a section through a shaft-hub connection. Such is used when torque has to be transmitted between shaft and hub.
  • FIG. 9 A very specific application example is shown in FIG. 9 for this purpose.
  • This recognizes the longitudinal section through a shaft of a bevel gear.
  • This has a fixed conical disk 1, which is made in one piece with the shaft 2.
  • the shaft 2 has a polygonal ground section 4, on which the displaceable conical disk 3 is seated with a hub portion 5.
  • This is shown in the figure 1 in section along the line II according to FIG. It can be seen that provided with a central bore 6 shaft 2 in its polygonal ground section 4, the dimensionally accurate in its inner contour also polygonal ground hub portion 5 of the movable conical disk 3 is seated.
  • the polygonal profile of the ground section 4 has an odd number of "corners” 7. In the example shown here, this number is 5. These "corners" are - as in the other examples shown here evenly around the circumference of the shaft distributed.
  • the radii r1 and R2 have the same center. This achieves a "same thickness", as discussed below. It should be mentioned here that the radius r1 is considerably smaller than the nominal radius of the shaft 2 and the radius R2 is considerably larger than this nominal radius of the shaft.
  • the shaft has a circumference of, for example, 70 mm, while the circle on which the radii r1 have their center has a diameter of about 36 mm.
  • FIG. 3 Another example of a polygonal profile can be seen in Figure 3, where there are three rounded "corners” 7. These, too, transition tangentially into arc sections 8 at transition lines 9. The three "corners” 7 are evenly distributed over the circumference of the profile and have between them an angle of 120 °.
  • the radius M with which the "corners" 7 are rounded is chosen to be 8 mm in the example shown here, which results in a radius for an inscribed circle to be inscribed in the polygonal profile which just barely touches the sections 8 in its middle point. of 32 mm and the radius of a circumference, which just touches the "corners" 7 at its center, of 37 mm.
  • FIG. 5 shows a shaft-hub connection with four rounded "corners” 7. These are in turn connected by radii sections 8. While the "corners" 7 are rounded with a radius r1, the sections 8 have a circular arc-like course a radius R2.
  • the shaft has a minimum diameter of 36.06 mm and a maximum diameter of 38 mm. However, the radius r1 is considerably less than the resulting minimum shaft radius r, while the radius R2 is considerably larger than the maximum shaft radius rW which is calculated therefrom.
  • FIG. 6 shows the section through a shaft-hub connection with five rounded "corners" 7 distributed uniformly around the circumference
  • the radius of curvature r1 is set at 7.5 mm
  • the radius of the diametrically opposite section 8 is set at 27.472 mm, resulting in a circumference with a diameter of 36 mm and an inscribed circle with a diameter of 33.944 mm
  • the two radii r1 and R2 have the same center point, which is 10.5 mm from the shaft center 10
  • the number of "corners" 7 in this particularly preferred embodiment is five with an even divisor of 360.
  • the angle in the circumferential direction on the shaft between two adjacent “corners” is 72 °, an amount without a decimal point Produce particularly well and accurately with a conventional numerically controlled machine tool.
  • FIG 7 is the schematic diagram of a shaft-hub connection is shown, which is comparable to the shaft-hub connection in Figure 6.
  • a hub is shown in Figure 8 with nine "corners” 7. These are evenly distributed around the hub at an angle of 40 ° between them
  • the hub has a nominal diameter of 36 mm and the nine "corners” 7 are one Radius r1 of 7.5 mm rounded.
  • the sections 8 between two adjacent corners 7 have a radius R2 of 28, 18 mm.
  • this therefore has an effective diameter of 35.68 mm.
  • both the waves in their polygonal section and the precisely fitting in their inner contour also ground polygonal hub portions.
  • the number of "vertices" is not only odd and> 5. In particularly preferred embodiments it is also a divisor of 360.
  • the angle on the wave between two adjacent "corners” is an even amount. For example, with five “corners” 72 °, with nine “corners” 40 ° etc.
  • a significant advantage of the invention is that, in particular in polygonal shaft-hub connections, which has a "corner" number of ⁇ 4, in particular ⁇ 5, the shaft and the hub are mutually displaceable even under load and at the same time between shaft and hub a sufficiently tight seat is present, with the hydraulic sealing is achieved if necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

L'invention concerne une liaison arbre-moyeu ayant un profil polygonal à coins arrondis dans lequel le nombre de coins s'élève au moins à deux et les coins sont arrondis avec un petit rayon et sont reliés à une section qui a un rayon plus grand, les rayons voisins se fondant tangentiellement l'un dans l'autre et, dans des formes de réalisation préférées, les points centraux des rayons ayant une même distance et, dans d'autres formes de réalisation, une distance différente par rapport au centre du polygone.
EP10725022A 2009-05-30 2010-05-31 Liaison arbre-moyeu à profil polygonal Withdrawn EP2435721A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910023449 DE102009023449A1 (de) 2009-05-30 2009-05-30 Wellen-Naben-Verbindung mit Polygonprofil
PCT/EP2010/003290 WO2010139441A1 (fr) 2009-05-30 2010-05-31 Liaison arbre-moyeu à profil polygonal

Publications (1)

Publication Number Publication Date
EP2435721A1 true EP2435721A1 (fr) 2012-04-04

Family

ID=42651431

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10725022A Withdrawn EP2435721A1 (fr) 2009-05-30 2010-05-31 Liaison arbre-moyeu à profil polygonal

Country Status (3)

Country Link
EP (1) EP2435721A1 (fr)
DE (1) DE102009023449A1 (fr)
WO (1) WO2010139441A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE534930C2 (sv) * 2010-06-30 2012-02-21 Atlas Copco Rock Drills Ab Medbringare för överföring av vridmoment och rotation till ett borrstål samt bergborrmaskin
US8734045B1 (en) 2012-11-16 2014-05-27 Dana Automotive Systems Group, Llc Inner race and boot sleeve
US9097287B2 (en) 2012-11-16 2015-08-04 Dana Automotive Systems Group, Llc Inner race and boot sleeve
DE102013105677A1 (de) * 2013-06-03 2014-12-04 Ihi Charging Systems International Gmbh Verstellvorrichtung für einen Abgasturbolader
DE102015004886A1 (de) * 2015-04-16 2016-10-20 Maschinenfabrik Niehoff Gmbh & Co. Kg Ziehwelle und Ziehwalze für eine Drahtziehmaschine
DE102015106018A1 (de) * 2015-04-20 2016-10-20 Smt Scharf Gmbh Reibradantrieb und Verfahren zur Montage eines Reibrades
DE102016213094A1 (de) 2016-07-18 2018-01-18 Technische Universität Berlin Verschlusskupplung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3347634A1 (de) * 1983-12-30 1985-07-18 Vasipari Kutató és Fejlesztö Vállalat, Budapest Gebaute walzwerkzeugvorrichtung mit formschluessiger verbindung
GB2152631B (en) * 1984-01-05 1987-09-23 Vasipari Kutato Fejleszto Assembled cylindrical roll tool with axially extending joint between parts
DE50103741D1 (de) * 2001-01-19 2004-10-28 Visteon Global Tech Inc Welle-Nabe-Verbindung
DE102006002601B4 (de) * 2006-01-13 2009-03-05 Freie Universität Berlin Omnidirektionales Rad
KR20090082886A (ko) * 2006-11-29 2009-07-31 보르그워너 인코퍼레이티드 터보차저
DE102007062152A1 (de) * 2007-12-21 2009-06-25 Bosch Mahle Turbo Systems Gmbh & Co. Kg Welle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010139441A1 *

Also Published As

Publication number Publication date
WO2010139441A1 (fr) 2010-12-09
DE102009023449A1 (de) 2010-12-16

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