| 摘要 |
PROBLEM TO BE SOLVED: To improve machining accuracy by fittingly fixing a wheel spindle formed in tapered shape, into a tapered fitting hole formed at the axis part of a flange for fixing a grinding wheel. SOLUTION: A tapered wheel spindle 14 has a bolt hole 16 of specified depth formed at the top part along an axis. A tapered fitting hole 22 is formed at the axis part of a flange 12 composed of a cylindrical drum part 12A and a flange part 12B formed at the lower end outer periphery, and its taper ratio is made equal to the taper ratio of the wheel spindle 14. A grinding wheel 10 is fitted to the flange 12, and after groove formation and balance adjustment are completed, the tapered fitting hole 22 formed in the flange 12 is fitted to the tapered wheel spindle 14, and a flange fitting bolt 30 is fitted into the bolt hole 16 and fastened. A flange part 30A of the flange fitting bolt 30 therefore presses the top part of the flange 12 to fix the flange 12 to the wheel spindle 14.
|
