. Railway mechanical engineer . No. 9 Cincinnati Internal Grinding Machine surfaces must be ground at the same setting. Should separatesettings be made the resultant accuracy would be wholly de-pendent upon the closeness of the chucking which mightnot be within the tolerance fixed. In face grinding the posi-tion of the wheel remains unchanged, but the work-head istraversed. The design of the machine consists mainly of a swiveling wheel-head carried upon a sliding table having provision forlongitudinal motion, but not being movable crosswise; awork-head mounted on a cross-slide in such a manner
. Railway mechanical engineer . No. 9 Cincinnati Internal Grinding Machine surfaces must be ground at the same setting. Should separatesettings be made the resultant accuracy would be wholly de-pendent upon the closeness of the chucking which mightnot be within the tolerance fixed. In face grinding the posi-tion of the wheel remains unchanged, but the work-head istraversed. The design of the machine consists mainly of a swiveling wheel-head carried upon a sliding table having provision forlongitudinal motion, but not being movable crosswise; awork-head mounted on a cross-slide in such a manner so asto provide a sidewise movement for adjusting and feeding thework to the diameter of the wheel; an automatic reverse platemounted on the front of the base for controlling the reversal. Rear View of Internal Grinder of the table; a gear box, contained in the automatic reverseplate, for varying the speed of the table; an automatic feed-ing device connecting the automatic reverse plate with thecross slide feed; a gear box on the rear of the machine forcontrolling the rotative speed of the work; a truing diamondcarrier always in position on the machine; a separate coolanttank with accompanying piping; and a complete set of waterguards. Entirely self-contained, the machine may be driven bya single pulley from the lineshaft; by a pulley from an in-termediate or jack-shaft; or, by a motor through a silentchain and sprocket. The grinding wheel is held on a spindlecarried in a cylinder, tapered on the outside and mounted ina hole of corresponding taper in the wheelhead housing inwhich it is secured by a lock-nut. A range of wheel-heads November, 1920 RAILWAY MECHANICAL ENGINEER 733 from maximum to minimum machine rapacit} is available. Each head is a complete unit in itself,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
