. American engineer and railroad journal . HIGH POWERED MILLING MACHINE, BEMENT-MILES. August. 1909. AMERICAN ENGINEER AND RAILROAD [OURNAL. 309 it in place. It was thought, however, that this grooving of thecutter blank could be done better and faster by milling than byplaning, and that an undercut groove might be produced at onceby a saw set in a certain relation to the cutter blank. Thisproved practicable, and although the groove so formed was notso easily fitted with a cutter blade on account of its curved sides,the curved sides gave the cutter a lip angle which was of greatvalue in actual
. American engineer and railroad journal . HIGH POWERED MILLING MACHINE, BEMENT-MILES. August. 1909. AMERICAN ENGINEER AND RAILROAD [OURNAL. 309 it in place. It was thought, however, that this grooving of thecutter blank could be done better and faster by milling than byplaning, and that an undercut groove might be produced at onceby a saw set in a certain relation to the cutter blank. Thisproved practicable, and although the groove so formed was notso easily fitted with a cutter blade on account of its curved sides,the curved sides gave the cutter a lip angle which was of greatvalue in actual service. To form the blades accurately to theshape of the groove, it was necessary to design a bending machine of great power, capable of squeezing the blades at once to. proper combination was obtained, capable ■>! flowing freely, ofcooling without shrinkage, of with landing great strains withoutcrumbling, and i permitting quick removal of the blade Adevice was designed for compressifl loy in the slots after it had been poured, and another one for removing the alloywin it it was necessary to replace the blades. With the alloycompressed in the slots, the blades arc so firmly secured thatthey may be broken off by fore- without affecting it. It is claimed that this constrt ctii n produces a cutter of moderate diameter and with a greater number of blades for a givendiameter than on other cutters of the inserted blade type, andthat it has a capacity in excess of the requirements of highpowered milling machines. Fig. 4 shows the form of the slot and blade and the spaceoccupied by the alloy. Fig. 5 shows a constant lip angle, L, Fig. 4
Size: 1968px × 1270px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
