Canadian machinery and metalworking (July-December 1917) . work-manship were required. The foundry lathe. An iron plate P, 1, was cast, 1%in. thick, and bolted to the cross slide inplace of the tool post. This plate carriedfive tools, bolted in slots in the uppersurface. These tools did all the cuttingexcept the finishing on the chuck side ofthe castings. Tool 1 turned the outsidediameter, tools 3 and 4 roughed thesteps on the back, and tool 2 turned thefront side. In using the cross-feed, tool 2began the cut, closely followed by tool3, making a parallel cut on the back;these two were not dire
Canadian machinery and metalworking (July-December 1917) . work-manship were required. The foundry lathe. An iron plate P, 1, was cast, 1%in. thick, and bolted to the cross slide inplace of the tool post. This plate carriedfive tools, bolted in slots in the uppersurface. These tools did all the cuttingexcept the finishing on the chuck side ofthe castings. Tool 1 turned the outsidediameter, tools 3 and 4 roughed thesteps on the back, and tool 2 turned thefront side. In using the cross-feed, tool 2began the cut, closely followed by tool3, making a parallel cut on the back;these two were not directly opposite andwhen it was time to move tool 3 away toform the step, tool 2 was in position torough out the depressed ring on the the roughing out, tool 5 wasbrought up and squared out both cornersof the depression. The back of the casting was left flatas shown by the dotted lines. Actualworking proved the wisdom of this; nei-ther of the back tools encountered anysand such as would have been unavoid-able if the steps had been cast, the FIG. 1. TURRET LATHE PRODUCTION ON ENGINE LATHE—SECTION OF CASTING.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19
