. Railway mechanical engineer . hown in the drawing. To facilitatemachining part 2 a 15/16-in. hole is drilled as shown andthis hole is later filled by driving in plug 8. As in the pre-vious case, the 2*/2-in. by 1 3/16-in. slotted hole in body Iis intended to provide auxiliary means for clamping thetool in place. The construction of these tool-holders is such as to holdthe tool bits and forming tools with great firmness underheavy cuts, at the same time permitting their ready removalfor changing or grinding. When the tool bits are new, they rest on the bottom against the wheel lathe tool post
. Railway mechanical engineer . hown in the drawing. To facilitatemachining part 2 a 15/16-in. hole is drilled as shown andthis hole is later filled by driving in plug 8. As in the pre-vious case, the 2*/2-in. by 1 3/16-in. slotted hole in body Iis intended to provide auxiliary means for clamping thetool in place. The construction of these tool-holders is such as to holdthe tool bits and forming tools with great firmness underheavy cuts, at the same time permitting their ready removalfor changing or grinding. When the tool bits are new, they rest on the bottom against the wheel lathe tool post, but asthey become worn down by grinding, filler blocks are insertedto keep the cutting edges at the required height. Referenceto Fig. 3 shows the actual appearance of two tool-holders I ! fii P^gPlf •^nf^^^»,-jiini *KJ% j§j3fj ^- 7 KStfTfl^ Fig. 3—Tool Holders, Tool Bits and Filling Blocks which have just been removed from the lathe. Several toolbits, filling blocks and forming tools used with the holdersalso are 1 2 -1 <- I T I k-°)• ! i pi1 4b
Size: 1650px × 1515px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
