| 摘要 |
1,247,479. End mills. VALERON CORP. 6 March, 1970 [10 March, 1969], No. 10804/70. Heading B3K. An end mill 10 comprises a shank 16, having helical slots 20, 22, for cutter blades 12, 14, the shank being slit at 32 along the same helix as the slots, chip removal recesses 24, 26 which follow the helix, at least one clamping screw 40, for clamping the blades in the slots, and a locking grub screw and brass shoe 54, 56 for each screw 40. |
