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
  • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
  • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
  • F16D1/09—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
  • F16D1/093—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using one or more elastic segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping
  • F16D1/095—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using one or more elastic segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping with clamping effected by ring contraction only
• • 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
  • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
  • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
  • F16D1/09—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
  • F16D1/093—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using one or more elastic segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping

Definitions

• the invention relates to a device for axially and tangentially clamping an object on a shaft, said device comprising a slit inner sleeve adapted to be mounted on ' the shaft and having a conical portion; an outer sleeve having a conical portion cooperating with the conical portion of the inner sleeve; and locking members for displacing the sleeves relative to one another and thus allowing axial and tangential clamping of the sleeves on the shaft.
• the invention aims at providing a device for clamp ⁇ ing, on a shaft, an object of varying thickness and material, for example a chain wheel, belt pulley, gear wheel, or cam disk, such that the object is clamped by friction both axially and non-rotatably on the shaft. Furthermore, the invention aims at providing a device of the type mentioned by way of introduction, combined with a sliding coupling.
• Fig. 1 is a lateral view, partly in section, of a first embodiment of the device according to the in ⁇ vention, an object being mounted on the device.
• Fig. 2 is a front view of a second embodiment of the device according to the invention.
• Fig. 3 is a lateral view, partly in section, of the device shown in Fig. 2, an object being mounted on the device.
• Fig. 4 is a first embodiment of a sliding coupling included in the device according to the invention.
• Fig. 5 is a second embodiment of a sliding coupling.
• Fig. 6 is a part section along line VI-VI in Fig.
• Fig. 7 is a modification of the embodiment in Fig.
• Fig. 1 shows a device 1 according to a first embodi ⁇ ment of the invention.
• the device comprises an inner sleeve 2 having a cylindrical portion 15 to support an object 12 which is to be clamped, and a conical portion 4 cooperating with an outer sleeve 5.
• the cy ⁇ lindrical portion 15 serves to centre and hold the object. on a shaft 19, while the conical portion which is formed with one or more slots 3 (only one slot shown) , serves to clamp the inner sleeve on the shaft 19 by cooperation with the outer sleeve 5.
• the outer sleeve 5 has a conical portion 6 cooperating with the conical portion 4 of the inner sleeve 2 and a number of threaded, axial bores distributed circumferentially on the sleeve for holding clamping screws 7.
• Clamping the object 12 on the shaft 19 is done in the following manner. First, a clamping washer 13 is mounted on the cylindrical portion 15 of the inner sleeve 2. Then the object 12 and a counter-washer 8 are mounted on this cylindrical portion, the object being placed between the clamping washer 13 and the counter-washer 8.
• the counter-washer 8 and the inner sleeve 2 each have an annular groove 9 and 10, respec ⁇ tively, for holding a one-part or two-part lock ring 11.
• each clamping screw 7 on the clamping washer 13 effects tangential clamping of the object 12, that 5 is-.to say the object is non-rotatably mounted on the device 1.
• a great advantage of this arrangement is that the object 12 may be set in the correct axial position before clamping by means of the clamping screws 7.
• the clamping washer 13 has openings for receiving 0 the clamping screws 7.
• Fig. 2 shows a second embodiment ofthe invention, having great resemblance to the first embodiment, but here also the outer sleeve is formed with a slot 20.
• Like reference numerals apply to similar parts in Fig. 5 1.
• Fig. 3 shows a lateral view of the device in Fig. 2, an object 17 being centred on the outer sleeve 5 having a cylindrical, outer surface 16.
• the object has , in this case, an annular shoulder 18 engaging ° with the counter-washer 8.
• the cylindrical portion 15 of the inner sleeve has been made shorter, and there is no clamping washer 13.
• the shoulder 18 may be replaced by an annular groove in the object 17 and a lock ring inserted in the groove. 5 Clamping the object 17 is done in the following manner. hen the clamping screws 7 press the counter- washer 8 against the lock ring 11, the outer sleeve 5 tries to "climb" the conical portion 4 of the inner sleeve and, by means of the above-mentioned mo ental force, to press the conical portion of the inner sleeve against the shaft. Both the outer sleeve and the inner sleeve having slots 20 and 3, respectively, the outer sleeve will be slightly displaced radially outwardly towards the object. The outer sleeve will therefore engage with the object 17, and since the outer sleeve is displaced to some extent also in the axial direction, the outer sleeve will, by means of friction engagement.
• the embodiment in Fig. 4 corresponds to the embodiment in i ig. 1, although a sliding coupling has been added to allow the object to be rotated relatively to the shaft, when a given tangential force on the object is " exceeded.
• the sliding coupling consists of friction linings 24 and 25 on the counter-washer 8 and on a washer 30, respectively.
• a counter-sleeve is slidable on the cylindrical portion 15 of the inner sleeve, and a cylindrical portion 22 of the counter-sleeve is adapted to engage with the counterrwasher via a jaw clutch 33 such that the counter-sleeve, when sliding, is not taken along by the object.
• the jaw clutch comprises a number of projections formed on the counter-washer and engaging with corresponding recesses in the end of the cylindrical portion 22 of the counter-sleeve.
• a radial flange 23 on the counter-sleeve has a number of through holes in its circumference for receiving a spring assembly 27 as described below and, between these holes, borings for receiving the clamping screws 7.
• the inner sleeve is clamped on the shaft in the same manner as before, by tightening the clamping screws, allowing the cylindrical flange on the counter-sleeve to engage with the counter-washer 8 to build up the above mentioned momental force.
• the cylindrical portion 22 holds the object.
• each spring assembly consists of a number
• FIG. 5 shows another type of sliding coupling which does not have the washer, the bias sleeve and the spring assembly but, instead, annular grooves 29 formed oppo ⁇ site one another in the stop member 8 and the radial flange 23 on the counter-sleeve, respectively.
• Sinusoidal leaf springs 28 are clamped in the grooves between the bottom of the groove and the respective friction lining.
• the clamping screws engage directly with the radial flange 23 on the counter-sleeve.
• This embodiment is intended for minor objects and, thus, minor forces.
• Fig. 6 shows the position of one spring 28 in its groove 29, the spring being provided, at its points of contact with the rear side of the friction lining 24, with pins 32 which engage with the corresponding recesses in the friction lining for locking it to the stop member 8. Also other types of locking between the friction lining and the leaf springs may be used.
• Fig. 7 shows a device for front mounting on a shaft end.
• the stop member 8 is made in one piece with the cylindrical portion 15 of the inner sleeve.
• the conical portion of the inner sleeve consists of a separate ring 34, mounted on the slit part of the sleeve and having a conical outer surface, cooperating with the conical surface of the outer sleeve 5 when the sleeves are clamped on the shaft and the object is locked on the cylindrical portion of the inner sleeve.
• the lock ring 11 is placed on the slit part of the inner sleeve and is easily accessible from the shaft end.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Clamps And Clips (AREA)

Priority Applications (2)

Applications Claiming Priority (1)

Publications (1)

Family

ID=20349522

Family Applications (1)

Country Status (4)

Cited By (1)

Citations (4)

• 1983
  • 1983-01-11 SE SE8300088A patent/SE8300088L/sv not_active Application Discontinuation
• 1984
  • 1984-01-10 WO PCT/SE1984/000002 patent/WO1984002756A1/en not_active Application Discontinuation
  • 1984-01-10 EP EP19840900544 patent/EP0132270B1/en not_active Expired
  • 1984-01-10 DE DE8484900544T patent/DE3460302D1/de not_active Expired

Patent Citations (4)

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