Arbor assembly
First Claim
1. An arbor assembly comprising a first arbor section, a second arbor section removably mountable on said first arbor section, said arbor sections having matching sets of longitudinally spaced apart internal and external cylindrical pilot surfaces thereon for concentrically locating said second arbor section on said first arbor section, said pilot surfaces on said arbor sections being spaced apart the same distance so that said pilot surfaces on said arbor sections will start to engage each other at the same time during assembly of said second arbor section on said first arbor section, and means for concentrically locating and clamping a workpiece between said arbor sections.
2 Assignments
0 Petitions
Accused Products
Abstract
Arbor assembly includes a fixed arbor section and a removable arbor section each including a pair of longitudinally spaced apart cylindrical pilot surfaces of different diameters spaced the same distance apart. Between the pilot surfaces on each arbor section is a guiding taper to aid in aligning the pilot surfaces so that such pilot surfaces freely engage each other during assembly. Longitudinally spaced locating tapers on the arbor sections are engageable by longitudinally spaced bearing surfaces on the workpiece for concentrically locating the workpiece between the arbor sections. A floating collet transmits a clamping force to the removable arbor section to urge the removable arbor section toward the fixed arbor section to clamp the workpiece between such arbor sections while the collet is in a free state without any flexing of the collet fingers. Upon release of the clamping force, the collet fingers are free to flex to permit the removable arbor section and workpiece to be assembled onto and removed from the fixed arbor section. A lost motion connection between the collet and fixed arbor section prevents removal of the collet during removal of the removable arbor section and workpiece from the fixed arbor section.
23 Citations
35 Claims
- 1. An arbor assembly comprising a first arbor section, a second arbor section removably mountable on said first arbor section, said arbor sections having matching sets of longitudinally spaced apart internal and external cylindrical pilot surfaces thereon for concentrically locating said second arbor section on said first arbor section, said pilot surfaces on said arbor sections being spaced apart the same distance so that said pilot surfaces on said arbor sections will start to engage each other at the same time during assembly of said second arbor section on said first arbor section, and means for concentrically locating and clamping a workpiece between said arbor sections.
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23. An arbor assembly comprising first and second arbor sections, means for concentrically locating said first arbor section with respect to said second arbor section, and means for concentrically locating and clamping a workpiece between said arbor sections, said means for clamping comprising axially movable collet means having a plurality of circumferentially spaced collet fingers engageable with said second arbor section, means for applying an axial clamping force to said collet means to cause said collet means to move axially for urging said second arbor section axially towards said first arbor section to clamp said workpiece therebetween, and means for preventing flexing of said collet fingers during such clamping of said workpiece between said arbor sections.
- 24. An arbor assembly comprising first and second arbor sections, means for concentrically locating said first arbor section with respect to said second arbor section, and means for concentrically locating and clamping a workpiece between said arbor sections, said means for clamping comprising collet means having a plurality of circumferentially spaced collet fingers engageable with said second arbor section, means for applying an axial clamping force to said collet means for urging said second arbor section axially towards said first arbor section to clamp said workpiece therebetween, and means for preventing flexing of said collet fingers during such clamping of said workpiece between said arbor sections, said means for preventing flexing of said collet fingers comprising an axially movable actuating shaft having an enlarged head portion which radially overlaps a portion of said collet fingers, and a stepped shoulder on said second arbor section for engagement by said collet fingers for trapping said collet fingers between said enlarged head portion and a stepped shoulder during axial movement of said actuating shaft toward said first arbor section.
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26. An arbor assembly comprising first and second arbor sections, means for concentrically locating said first arbor section with respect to said second arbor section, and means for concentrically locating and clamping a workpiece between said arbor sections, said means for clamping comprising collet means having a plurality of circumferentially spaced collet fingers engageable with said second arbor section, means for applying an axial clamping force to said collet means for urging said second arbor section axially towards said first arbor section to clamp said workpiece therebetween, means for preventing flexing of said collet fingers during such clamping of said workpiece between said arbor sections, and spring means for supporting said collet means for axial movement relative to said first arbor section.
- 27. An arbor assembly comprising first and second arbor sections, means for concentrically locating said first arbor section with respect to said second arbor section, and means for concentrically locating and clamping a workpiece between said arbor sections, said means for clamping comprising collet means having a plurality of circumferentially spaced collet fingers engageable with said second arbor section, means for applying an axial clamping force to said collet means for urging said second arbor section axially towards said first section to clamp said workpiece therebetween, means for preventing flexing of said collet fingers during such clamping of said workpiece between said arbor sections, and lost motion connection means between said first arbor section and said collet means for preventing removal of said collet means from said first arbor section while permitting relative movement therebetween.
Specification