Means for mounting a work roll on a shaft

Abstract

Means for mounting a work roll on a shaft. A cylindrical collet having at least one tapered surface, either exterior or interior, is pushed into an annular space between the roll shaft and work roll, one or both of these latter components having a reversely tapered surface which cooperates with the tapered surface or surfaces on the collet to provide a self-locking frictional connection. The collet is inserted and withdrawn from the annular space by mechanical or pneumatically operated mechanisms which coact with the collet and the shaft end or work roll.

We claim:  .[.1. For use in combination with a shaft, a roll axially mounted on the shaft, and a collet member having one end adapted to be wedged in an operative position between the shaft and the roll, apparatus comprising fluid actuated tool means for axially moving the collet member into and out of its operative position, said tool means being removably mounted at the end of the shaft and being engageable with the collet member and the shaft..].  .[.2. The apparatus as claimed in claim 1 wherein said tool means includes first and second alternatively usable tool assemblies, said first tool assembly being adapted to move the collet member in one direction relative to the shaft in order to force the collet member into its operative position, and said second tool assembly being adapted to move the collet member in the opposite direction relative to the shaft in order to remove the collet member from its operative position..].  .[.3. The apparatus as claimed in claim 2 wherein said first 
     
        and second tool assemblies each comprise a piston and a cylinder..]. 4. For use with a combination of components which includes a work roll .Iadd.having a cylindrical inner surface .Iaddend.mounted on a roll shaft .Iadd.having a tapered outer surface, .Iaddend.an apparatus .Iadd.for mounting the work roll on the roll shaft .Iaddend.comprising: .Iadd.stop means on the roll shaft for limiting the extent to which the work roll may be inserted axially on the roll shaft, retaining means engageable with the roll shaft and the work roll .Iaddend.for .Iadd.holding the work roll against said stop means, .Iaddend.a collet member having .Iadd.a cylindrical exterior surface and a tapered interior surface terminating at .Iaddend.one end .Iadd.which is .Iaddend.adapted to be wedged in an operative position between the work roll and the roll shaft, .Iadd.a collar at the other end of said collect member, .Iaddend.and fluid actuated tool means for axially moving said collet member relative to the roll shaft in opposite directions into and out of said operative position, said tool means being removably mounted at one end of the roll shaft and .Iadd.having an annular section adapted to surround said collar, with connecting means on said collar and said annular section for removably attaching said tool means to said collet member, said tool means .Iaddend.being operative to exert an axially directed force on said collet member in one direction while simultaneously exerting an opposite axially directed force on one of the other aforesaid components.  .[.5. The apparatus as claimed in claim 4 further characterized by a collar at the said other end of said collet member, an annular section on said tool means adapted to surround said collar, and connecting means on said collar and said annular section for removably attaching said tool means to said 
     
     
        collet member..]. 6. The apparatus as claimed in claim .[.5.]. .Iadd.4 .Iaddend.wherein said connecting means includes a groove on said collar, circumferentially spaced first finger members extending radially outwardly from said collar on one side of said groove, an annular shoulder on the other side of said groove, and circumferentially spaced second finger members extending inwardly from said annular section, said second finger members being adapted for positioning in said groove between said shoulder and said first finger members when said tool means is removably attached 
     
     
        to said collet member. 7. The apparatus as claimed in claim .[.5.]. .Iadd.4 .Iaddend.wherein said fluid actuated tool means is comprised of a cylinder member forming a chamber and a piston member mounted for reciprocal movement in said chamber, said cylinder member having an annular section which is adapted to surround the other end of said collet member, and connecting means on said annular section and the other end of said collet member for removably attaching said tool means to said collet 
     
     
        member. 8. The apparatus as claimed in claim 7 wherein said chamber is 
     
     
        annular in shape and formed within said annular section. 9. The apparatus as claimed in claim 8 wherein said piston member is circular in shape, and means for fixing said piston member in relation to the roll shaft, whereupon when hydraulic fluid is injected into said chamber, said cylinder member is moved axially in one direction relative to said piston member and the roll shaft, thus axially forcing said collet member in the 
     
     
        same direction into said operative position. 10. The apparatus as claimed in claim 7 wherein the combination of said chamber and the piston member reciprocally contained therein is disposed oppositely to the end of the roll shaft when said annular section is connected to the other end of said collet member, whereupon when hydraulic fluid is injected into said chamber, said piston member bears against the end of the roll shaft and said cylinder member is moved axially in one direction relative to both said piston member and the roll shaft, thus axially withdrawing said 
     
     
        collet member in the same direction from said operative position. 11. The apparatus as claimed in claim .[.5.]. .Iadd.4 .Iaddend.wherein said piston member is circular in shape and positioned to contact the work roll when said annular section is connected to the other end of said collet member, whereupon when hydraulic fluid is injected into said chamber, said piston member bears against the work roll and said cylinder member and collet member move axially away from the work roll, thereby axially withdrawing 
     
     
        said collet member from said operative position. 12. For use in combination with a work roll carried on a roll shaft, apparatus comprising: .Iadd.stop means on the roll shaft for limiting the extent to which the work roll may be inserted axially onto the roll shaft, retaining means engageable with the roll shaft and the work roll for holding the work roll against said stop means, .Iaddend.a .[.non-slit.]. collet member having .[.one.]. .Iadd.a non-slit .Iaddend.end adapted to be axially inserted in an operative position between the work roll and the roll shaft, said collet member having .[.at least one.]. .Iadd.a cylindrical exterior surface and a .Iaddend.tapered .Iadd.interior .Iaddend.surface at the said .[.one.]. .Iadd.non-slit .Iaddend.end which cooperates .[.with a reversely tapered surface.]. .Iadd.respectively with a cylindrical interior surface on the work roll and a tapered exterior surface .Iaddend.on .[.either.]. the roll shaft .[.or work roll.]. to provide a wedged self-locking relationship .[.between.]. .Iadd., with torque being transmitted to .Iaddend.the work roll .[.and.]. .Iadd.from the .Iaddend.roll shaft .Iadd. solely as a result of said wedged self-locking relationship .Iaddend.when the collet member is in said operative position, and .[.removably mounted.]. fluid-actuated tool means for moving said collet member into and out of said operative position, said tool means being .Iadd.removably .Iaddend.engageable with the other end of said collet member and the roll shaft.  .[.13. For use in combination with a work roll carried on a roll shaft, apparatus comprising: a collet member having one end adapted to be wedged in an operative position between the work roll and the roll shaft, the other end of said collet member having an integral face which is disposed oppositely to and spaced axially from the end of the roll shaft when the collet member is operatively positioned, a threaded aperture in said face, said aperture being coaxial with the rotational axis of both said shaft and said work roll, and tool means for axially moving said collet member relative to the shaft in opposite directions into and out of said operative position, said tool means being threaded through said aperture into cooperative engagement with the end of said shaft..].  .[.14. The apparatus as claimed in claim 13 wherein said tool means is comprised of a bushing member threaded through said aperture, and a bolt member threaded through said bushing member and into threaded engagement with the end of said shaft..].