WO2009050149A1 - Galet à came à fixer dans un trou borgne ou un trou traversant - Google Patents

Galet à came à fixer dans un trou borgne ou un trou traversant Download PDF

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Publication number
WO2009050149A1
WO2009050149A1 PCT/EP2008/063760 EP2008063760W WO2009050149A1 WO 2009050149 A1 WO2009050149 A1 WO 2009050149A1 EP 2008063760 W EP2008063760 W EP 2008063760W WO 2009050149 A1 WO2009050149 A1 WO 2009050149A1
Authority
WO
WIPO (PCT)
Prior art keywords
machine element
recess
roller
clamping sleeve
shaft
Prior art date
Application number
PCT/EP2008/063760
Other languages
German (de)
English (en)
Inventor
Michael Bogner
Kai Ilsemann
Original Assignee
Schaeffler Kg
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 Schaeffler Kg filed Critical Schaeffler Kg
Publication of WO2009050149A1 publication Critical patent/WO2009050149A1/fr

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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
    • F16B13/063—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
    • F16B13/065—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting the screw, nail or the like
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/08—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation
    • F16B13/0858—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation with an expansible sleeve or dowel body driven against a tapered or spherical expander plug
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/048—Non-releasable devices
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
    • F16B37/122—Threaded inserts, e.g. "rampa bolts"

Definitions

  • the invention relates to a cam roller for mounting in a blind hole or through hole of a connecting structure according to the preamble of claim 1 and claim 9.
  • blind hole or through hole as any smooth-walled openings for receiving a smooth-walled pin Cam follower in the adjacent construction to be understood. It is also conceivable that non-circular cross-sections of this opening, as far as the pin is adapted to the opening cross-section.
  • Cam followers are needle or cylindrical roller bearings with a thick-walled outer ring.
  • Cam rollers have a solid roller journal instead of an inner ring, which is usually provided with a thread.
  • the axial guidance of the outer ring is effected by a firm collar on the roller journal and a thrust washer pressed onto the roller journal or via the roller set.
  • Cam rollers can be used in all types of cam gears, guideways, conveyor systems. Such cam rollers are described for example in DE 43 22 554 A1, DE 44 42 184 C2 and DE 195 29 238 A1.
  • cam rollers there are various possibilities for fastening cam rollers to connecting constructions, such as girders.
  • the cam follower When mounting in a through hole, the cam follower is screwed to the rear side of the adjacent construction using a nut.
  • WO 2007/068595 A1 the attachment of a, having a roller bearing deflection roller can be removed in a through hole of a machine part.
  • the guide roller For attachment of the guide roller is inserted into the inner ring of the bearing bolt, which engages in the installed state via a rolling bearing axially offset positioned polygonal profile in a corresponding receptacle of the machine part.
  • the bolt is attached to nem from the back of the machine part protruding end screwed with a flange nut.
  • the fastening method described above is not suitable for attachment in a blind hole, since the screw connection requires accessibility from the rear side of the adjacent construction.
  • the attachment in blind holes is nowadays usually by screwing a threaded roller journal of the cam roller into a corresponding internal thread in the adjacent construction.
  • a disadvantage of this solution is that the introduction of a thread in the adjacent construction is relatively expensive and thus expensive.
  • this mounting method is not completely safe and reliable, since it may come to a relaxation of the screw because of the considerable mechanical stress to which the cam roller is exposed in the long term.
  • the roller journal has a tubular shaft in which a threaded pin is arranged.
  • an intermediate element is guided, which exerts a radial pressure on the end portion of the tubular shaft and thereby causes the blocking of the shaft in the bore of a carrier.
  • the end portion of the tubular shaft has an internal conical shape.
  • the intermediate element is a frusto-conical ring mounted in a space between the tubular shaft and the pin.
  • the object of the present invention is to provide an improved cam roller is available, which can be securely fastened in a blind hole of a connection construction, wherein for attachment neither a thread in the adjacent construction nor an external thread on the roller journal should be required, and with Relatively few components, a cost-effective solution should be realized.
  • the cam follower according to the invention is characterized in that the shaft has a extending through the entire shaft in the axial direction cavity, said cavity at least in the direction away from the collar end of the Shaft is filled with a spreading medium. Furthermore, it is essential to the invention that a piston displaceable in the axial direction is arranged in the cavity, wherein the piston is arranged starting from the collar in front of the expansion medium. The piston communicates with an actuating means.
  • a significant advantage of the present invention is that a secure and permanent connection between cam follower and adjacent construction can be made without accessibility from the back of the assembly is required.
  • the proposed solution is thus particularly well suited for mounting a cam roller in a blind hole.
  • no thread in the adjacent construction and no external thread on the roller pin needed which leads to significant cost savings.
  • the cam follower according to the invention can be assembled with comparatively little effort. After it has been placed in the blind hole of the adjacent construction, the piston is moved by means of the actuating tool in the direction of spreading medium, which is thereby pressurized. In this case, a pressure force is exerted on the inner diameter of the shaft end directed away from the collar end by the spreading. It comes to widening of the shaft end, resulting in a tight fit of the Rolling pin and thus also the cam roller in the adjacent construction results.
  • the actuating element is a screw which is arranged in an outgoing from the collar axial bore with internal thread.
  • the spreading medium is solid and elastic to a certain extent.
  • a plastic could be used.
  • Other embodiments use a liquid medium, such as a hydraulic fluid.
  • the expansion medium must essentially meet a requirement, it must be compressible by the piston so that an expansion of the shaft end can be realized by the resulting compressive force.
  • the spreading medium should also be such that at least a portion of the compressive force is permanently maintained to prevent backward bending of the shaft ends to the unexpanded position.
  • lubricant can also be supplied via the axial bore of the screw serving as the actuating means.
  • the cam follower also has a radial lubricating hole bore, wherein the radial lubricating hole bore communicates with the axial bore. In this way, a particularly simple and good lubrication of the rolling elements from the front mounting side of the cam roller respectively.
  • a cam follower according to the appended claim 9 also serves to achieve the object according to the invention.
  • This variant of the cam follower according to the invention is characterized in that the roller journal has a conical bore, the bore extending from the collar to the shaft end directed away from the collar , The tip of the cone is directed away from the covenant.
  • a taper pin is arranged, which preferably has a smaller length than the bore.
  • cam rollers can be further simplified.
  • the required components are reduced, which leads to significant cost savings.
  • Conventional cam rollers only need to be modified slightly; all you have to do is insert a tapered hole in the roller journal and insert a suitable taper pin into it.
  • For assembly is hammered with a suitable tool on the taper pin, which is thereby displaced towards the shaft end. This leads to the expansion of the shaft, resulting in a tight fit of the cam roller in the adjacent construction.
  • the shaft end directed away from the collar is provided with a plurality of slots. Through the slots, the expansion of the shaft diameter is additionally supported. In addition, the risk of a material tear, which arises uncontrolled at excessive material tensions and could jeopardize the operational safety, is reduced.
  • the conical bore serves for supplying lubricant. It is expedient if the cam roller is in turn provided with a radial lubricating hole bore, which is in communication with the tapered bore.
  • the shaft has notching elements on its outer lateral surface on.
  • the notching elements are driven into the surface of the inner wall of the blind hole, whereby the load capacity of the attachment of the roller journal in the blind hole of the adjacent construction is increased again.
  • the notching elements on the outer jacket of the clamping sleeve are preferably formed by hooks or by circumferential ridges.
  • the notching elements can be formed by a surface treatment of the clamping sleeve, for example by knurling.
  • the notch elements can also be formed in the form of small tips or in the form of a roughened material surface.
  • additional elements in the form of small hooks or tips can be introduced into the surface of the clamping sleeve.
  • the execution of the shaft with Einkerbelementen is advantageous both for inventive cam rollers with a spreading medium and for inventive cam rollers with a taper pin.
  • FIG. 1 shows a cam follower according to the invention according to a first embodiment in a sectional view.
  • FIG. 2 shows a cam follower according to the invention in a sectional view according to a second embodiment
  • Fig. 1 shows a first embodiment of a cam follower according to the invention in a sectional view.
  • the cam follower shown consists of an outer ring 01, a roller pin 02 and between outer ring 01 and roller pin 02 arranged rolling elements 03.
  • the roller pin 02 comprises a collar 05 and a track 06 having front portion and a shaft 09, which is in the axial direction connects the front section.
  • the outer ring 01 is rotatable about the rolling elements 03 on the Bearing 05 and the track 06 having the section stored.
  • the outer ring 01 has at its ends shelves 12, which limit the career of the rolling elements 03 in the axial direction.
  • At the end face of the rolling elements 03 is followed by a stop ring 13, which is firmly connected to the shaft 09 of the roller pin 02.
  • the shaft 09 has a cavity 15 which extends in the axial direction through the entire shaft 09 and is filled with a spreading medium 16 in the end region of the shaft 09 directed away from the collar 05.
  • the spreading medium can be either solid and preferably elastic or liquid. In principle, the use of a gas as a spreading medium would be conceivable, but gases can hardly build up the necessary pressure forces due to the compressibility.
  • a piston 17 is further arranged, which is arranged from the collar 05, starting in front of the medium 16.
  • the piston 17 is in communication with an actuating means, which comprises a screw 18 in the embodiment shown here.
  • the screw 18 is arranged in an outgoing from the collar 05 axial bore 20 with internal thread.
  • the axial bore 20 also serves for supplying lubricant from the waistband side of the cam roller.
  • the roller journal still has a radial lubrication hole 22.
  • the radial lubrication hole 22 is in communication with the axial bore 20.
  • the assembly of the cam roller in a connecting construction is carried out as follows. First, the cam roller is placed in the blind hole or through hole of the adjacent construction. The piston 17 is at this time in a position in which on the spreader 16 substantially no pressure is exerted. The Schaftend Scheme is therefore not expanded and can be easily inserted into the bore of the adjacent construction. The screw 18 is subsequently screwed deeper into the bore 22, wherein the piston 17 in the direction of expansion medium 16 ver pushes. In order to prevent turning of the cam roller when screwing in the screw 18, it has proven to be advantageous if two additional retaining bores 24 are introduced into the edge regions of the collar 05. In these retaining holes 24, a suitable tool can be introduced in order to counteract when screwing the screw 18 accordingly.
  • a co-rotation of the cam roller can be effectively avoided in this way.
  • the expansion medium 16 is pressed together, wherein a compressive force is exerted on the end region of the shaft 09, which causes an expansion of this shaft region, which results in jamming of the shaft in the blind hole or through bore of the adjacent construction.
  • the cam roller is now firmly and securely connected to the adjacent construction.
  • the widening of the shaft 09 by the spreading medium is only possible if the pressure force exerted is large enough to cause a cross-sectional widening of the shaft 09.
  • the end region of the shaft is made, for example, from a stretchable, preferably elastic material. It is also possible to slit the material in this section, in particular if the shaft 09 is made of steel.
  • the spreading agent could be a viscous adhesive that produces an adhesive bond, resulting in a particularly durable bond.
  • Fig. 2 shows another embodiment of the cam roller according to the invention in a sectional view.
  • the cam follower according to the invention again consists of an outer ring 01, a roller journal 02 and rolling elements 03 arranged between outer ring 01 and roller journal 02.
  • the roller journal 02 comprises a front section having a collar 05 and a track 06 and a shaft 09.
  • the outer ring 01 is over the rolling elements 03 rotatably mounted on the collar 05 and the track 06 having portion.
  • the outer ring 01 has at its ends shelves 12, which limit the career of the rolling elements 03 in the axial direction.
  • a stop ring 13 connects, which is firmly connected to the shaft 09 of the roller pin 02.
  • a preferably tapered bore 26 is introduced.
  • the tapered bore 26 extends from the collar 05, starting at the end of the shaft 09 directed away from the collar 05.
  • the tip of the cone is directed away from the collar 05.
  • a taper pin 27 is arranged in the tapered bore 26.
  • the taper pin 27 has a shorter length in the embodiment shown here than the tapered bore 26.
  • the taper pin 27 and the tapered bore 26 are matched in shape to each other so that there is an axial displacement of the taper pin towards the free end of the shaft 09 to a wedge effect of the opposing surfaces, whereby the shaft end is widened. This is also possible if the bore 26 is cylindrical.
  • the interrelations on wedge surfaces (for example self-inhibition, blockade) are well-known to the person skilled in the art, so that no further dimensioning instructions have to be given here.
  • roller journal 02 is additionally provided with a radial lubricating hole 22, which is connected to the conical bore 26.
  • the shank end of the shank 09 directed away from the collar 05 has at least one, but preferably a plurality of axial slots distributed on the circumference (not shown).
  • the assembly of the cam follower according to the embodiment shown in FIG. 2 in a connecting construction takes place as described below.
  • the shaft 09 of the cam roller in the blind hole or through-hole Hole of the adjacent construction placed.
  • the taper pin 27 is at this time spaced from the shaft end end of the tapered bore 26 and in a position in which no spreading forces are exerted on the inner sides of the shaft.
  • a suitable tool which is introduced from the collar side into the conical bore 26, hammered onto the taper pin 27.
  • the taper pin 27 moves toward the end of the tapered bore 26.
  • the shaft end is widened.
  • the widening of the shaft end is additionally supported by the slots introduced into the shaft end.
  • the cam follower is then firmly and securely connected to the adjacent construction.
  • the taper pin 27 can be secured by a screw 18.
  • the bore 26 may be open at the shaft end, so that the taper pin can emerge from the shaft 09 in the blind hole to be formed longer, if this is necessary for a larger expansion of the shaft end.
  • cam follower according to the invention is particularly well suited for mounting in a blind hole, it can of course be just as well fixed in through holes.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)

Abstract

L'invention concerne un organe de machine destiné à être fixé dans un évidement ménagé dans un support. L'invention concerne également un ensemble servant à fixer un organe de machine dans un évidement ménagé dans un support. L'organe de machine peut être constitué, par exemple, par un galet de came ou un galet de roulement, dont l'axe doit être fixé dans un évidement cylindrique ménagé dans un support. L'organe de machine (02, 18) selon l'invention présente une section de boulon (04) conique, s'élargissant dans un sens d'insertion (06), et une douille de serrage (07) pouvant s'élargir, laquelle douille peut être enfilée sur la section de boulon (04) conique et insérée dans l'évidement du support (01). Selon l'invention, la douille de serrage (07) présente des rainures (08) sur son enveloppe extérieure.
PCT/EP2008/063760 2007-10-18 2008-10-14 Galet à came à fixer dans un trou borgne ou un trou traversant WO2009050149A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007049902.9 2007-10-18
DE200710049902 DE102007049902A1 (de) 2007-10-18 2007-10-18 Kurvenrolle zur Befestigung in einer Sacklochbohrung oder einer Durchgangsbohrung

Publications (1)

Publication Number Publication Date
WO2009050149A1 true WO2009050149A1 (fr) 2009-04-23

Family

ID=40375143

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/063760 WO2009050149A1 (fr) 2007-10-18 2008-10-14 Galet à came à fixer dans un trou borgne ou un trou traversant

Country Status (2)

Country Link
DE (1) DE102007049902A1 (fr)
WO (1) WO2009050149A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012216270A1 (de) 2012-09-13 2014-03-13 Schaeffler Technologies AG & Co. KG Kurvenrollenbolzen zur Befestigung in einer Bohrung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1522597A (en) * 1974-11-01 1978-08-23 Adbar Ltd Insert
EP0394186A1 (fr) * 1989-01-25 1990-10-24 SKB Fabrique de roulements SA Galet
DE10353237A1 (de) * 2003-09-26 2005-07-28 Fischerwerke Artur Fischer Gmbh & Co. Kg Befestigungselement, Anordnung und Verfahren zur Verankerung in einem kurzen, nicht hinterschnittenen Sackloch

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4322554A1 (de) 1993-07-07 1995-01-12 Schaeffler Waelzlager Kg Kurvenrolle
DE9400452U1 (de) 1994-01-13 1994-02-24 Schaeffler Waelzlager Kg Kurvenrolle
DE29502463U1 (de) 1995-02-15 1995-04-06 Schaeffler Waelzlager Kg Kurvenrolle
DE102005060531A1 (de) 2005-12-17 2007-07-19 Schaeffler Kg Befestigung einer Umlenkrolle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1522597A (en) * 1974-11-01 1978-08-23 Adbar Ltd Insert
EP0394186A1 (fr) * 1989-01-25 1990-10-24 SKB Fabrique de roulements SA Galet
DE10353237A1 (de) * 2003-09-26 2005-07-28 Fischerwerke Artur Fischer Gmbh & Co. Kg Befestigungselement, Anordnung und Verfahren zur Verankerung in einem kurzen, nicht hinterschnittenen Sackloch

Also Published As

Publication number Publication date
DE102007049902A1 (de) 2009-04-23

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