Title:
HUB BLADE UNIT, HUB BLADE, AND MOUNT FLANGE
Document Type and Number:
Japanese Patent JP2022094647
Kind Code:
A
Abstract:
To provide a new technique for preventing idle running of a hub blade having a cutting blade for cutting a workpiece.SOLUTION: A hub blade unit has a mount flange body 52 having a boss part 53 having a male screw 53a formed on a tip side, and a flange part 53c that projects in a radial direction from a rear end side of the boss part 53, and has a support surface 53b supporting the hub blade 40, and a fixing nut that has a female screw screwed to the male screw 53a of the boss part 53 formed on its inner periphery, and sandwiches and fixes the hub blade 40 together with the flange part 53c, in which the hub blade 40 has a circular base 42 formed with a fitting hole 43 into which the boss part 53 of the mount flange body 52 is inserted, and a cutting blade 44 formed on an outer peripheral edge of the circular base 42, a notch part 45 is formed on an inner peripheral edge 43a of the fitting hole 43 of the circular base, and a projection 55 corresponding to the notch part 45 is formed on an outer periphery of the boss part 53 of the mount flange body 52.SELECTED DRAWING: Figure 3
Inventors:
WONG KAR HOO
Application Number:
JP2020207653A
Publication Date:
June 27, 2022
Filing Date:
December 15, 2020
Export Citation:
Assignee:
DISCO ABRASIVE SYSTEMS LTD
International Classes:
B24B45/00; B23D61/02; H01L21/301
Attorney, Agent or Firm:
Hiroshi Ogami