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In a lathe, a carriage, a cross slide reciprocatably mounted on said carriage, an apron, a cross feed screw for actuating said cross slide, o dial indicating mechanism associated with said cross feed screw for indicating the extent of travel of said cross slide, said dial indicating mechanism comprising a pair of differentially operated graduated collars the summation of whose readings indicates the total travel in inches and thousandths of an inch of said cross slide, cross stop mechanism associated with said cross feed screw and dial indicating mechanism, power cross feeding mechanism in said apron adapted to drive said cross feed screw, power rapid traverse mechanism adapted to drive said cross feed screw and manual means mounted on b1 said cross feed screw, and interlocking mechanism between said power cross feeding mechanism and said cross stop mechanism whereby said cross stop mechanism is rendered inoperative when said cross feed screw is being driven -1 by said power cross feed mechanism. And it is also a feature of our invention to provide quick set stop dogs on the control rod for the feed reverse mechanism which are actuated by the movement of the carriage and lathe 2. www.ardelengineering.com. This collar is adjustably mounted on the dial disc 153 which in turn is fixed to the ring gear 154 journaled on the hub 149 of the bracket 54. This mechanism is shown generally at 161 and is identical with that used in connection with dial mechanism for the cross feed screw. Calibration marks will measure either the distance from center (radius), or the work piece's diameter, so for example, on a diameter machine where calibration marks are in thousandths of an inch, the radial handwheel dial will read .0005 inches of radius per division, or .001 inches of diameter. Long workpieces often need to be supported in the middle, as cutting tools can push (bend) the work piece away from where the centers can support them, because cutting metal produces tremendous forces that tend to vibrate or even bend the workpiece. This permits facing operations to be performed, and the depth of cut to be adjusted. The collet sits behind the guide bushing, and the tools sit in front of the guide bushing, holding stationary on the Z axis.

185.562 dated January 18, 1938, and applicable to lathes of the character shown in co-pending application Serial No. CNC lathe with milling capabilities . For screw cutting, a half nut is engaged to be driven by the leadscrew's thread; and for general power feed, a key engages with a keyway cut into the leadscrew to drive a pinion along a rack that is mounted along the lathe bed. Rest rollers typically causes some additional geometry errors on processing surface. The best approximation with the fewest total teeth is very often 37 / 47 = 0.7872. When wheels become worn or compromised from excessive use, this tool can be used to re-cut and recondition the wheel of the train car. Toolroom lathe[edit]. The internal gear 174 has the same pitch and number of teeth as the internal gear I11 so that it rotates in synchronism therewith and with the screw 29. When the lever 103 is actuated up and down to render said rapid traverse clutch assemblies operative as described the roller engages , the surfaces 140 or 141 which causes the lever 133 and rock shaft 131 to be rotated in a clockwise direction.

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