Title:
【発明の名称】複合砥石車の製造方法及び型
Document Type and Number:
Japanese Patent JPH0671701
Kind Code:
B2
Abstract:
A composite grinding wheel comprising a support center with a peripheral groove containing a ring of metal bonded abrasive bonded thereto is made by placing in the bottom of an annular mold cavity, a ring whose internal bore is larger than and spaced from the inner smaller diameter of the mold cavity. The mold cavity above the ring is then filled with a sufficient volume of a mixture of metal bond and abrasive particles and closed off by an annular support center supported by the mold and having a central hub portion of smaller diameter than the internal bore in the ring and an axial height extending upwardly to an upper outer flange extending radially over the top of the mold cavity. The support center and ring are pressed together thereby compacting the mixture of metal bond and abrasive particles together between the upper outer flange and ring until the central hub extends into the ring and is substantially aligned with the bottom of the mold cavity and side of the ring. The cold pressed assembly is then heated sufficiently to sinter the metal bond, the abrasive particles, the support center, and ring, together into a unitary composite grinding wheel which is then stripped from the mold and, if necessary, machined to the desired size and shape.
Inventors:
William Henry Williston
Application Number:
JP17058785A
Publication Date:
September 14, 1994
Filing Date:
August 03, 1985
Export Citation:
Assignee:
Norton Company
International Classes:
B24D3/00; B24D3/06; B24D7/18; B24D18/00; B24D5/02; (IPC1-7): B24D3/00; B24D3/06; B24D5/02; B24D7/18
Attorney, Agent or Firm:
Aoki Akira (4 outside)
Next Patent: EJECTING DEVICE OF METAL MOLD FOR MOLDING RESIN