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  • 1980-1984  (2)
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  • 1
    facet.materialart.
    Unknown
    Workpiece positioning vise (1984)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A pair of jaw assemblies simultaneously driven in opposed reciprocation by a single shaft has oppositely threaded sections to automatically center delicate or brittle workpieces such as lithium fluoride crystal beneath the blade of a crystal cleaving machine. Both jaw assemblies are suspended above the vise bed by a pair of parallel guide shafts attached to the vise bed. Linear rolling bearings, fitted around the guide shafts and firmly held by opposite ends of the jaw assemblies, provide rolling friction between the guide shafts and the jaw assemblies. A belleville washer at one end of the drive shaft and thrust bearings at both drive shaft ends hold the shaft in compression between the vise bed, thereby preventing wobble of the jaw assemblies due to wear between the shaft and vise bed.
    Keywords: MECHANICAL ENGINEERING
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    Positioning Vise for Crystal Cleavage (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Vise manipulates brittle crystals, such as lithium fluoride, so they are in proper position for cleaving. Vise allows crystals as thin as 2 millimeters or less positioned so that cleaved without breakage. Vise holds workpiece firmly but gently. Bushings, shafts and adjusting screw designed to move jaws smoothly and uniformly with great tactile sensitivity.
    Keywords: FABRICATION TECHNOLOGY
    Type: GSC-12762 , NASA Tech Briefs (ISSN 0145-319X); 8; 2; P. 282
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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