Patent ID: 11945077
Assignee: TOKYO DIAMOND TOOLS MFG. CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 5:
6. A manufacturing method of the synthetic grindstone for performing surface processing used for dry chemo-mechanical grinding (CMG) processing or without liquid or slurry, the method comprising:
mixing:
abrasive grains with the abrasive grain ratio (Vg) of the abrasive grains to a total composition of the synthetic grindstone being greater than 0 vol % and 20 vol % or less,
a binder made of a thermosetting resin material, the binder with the binder ratio (Vb) of the binder to a total composition of the synthetic grindstone being greater than 5 vol % and 30 vol % or less, and
a filler to obtain a mixed material;

filling a mold with the mixed material;
molding by hot press, the abrasive grains and the filler being disposed in a state of being dispersed in the binder; and
demolding a molded body,
wherein:
the filler including at least one of
a first filler having a larger average particle diameter than the abrasive grains,
a second filler having electrical conductivity, and
a third filler harder than a workpiece,

the first filler is greater than 0 vol % and 40 vol % or less,
the second filler is greater than 0 vol % and 10 vol % or less, and
the third filler is greater than 0 vol % and 20 vol % or less.