Process of manufacturing base of diamond abrasive stone
A process for manufacturing the base of a diamond abrasive stone wherein a steel plate having a plurality of oval holes is bonded to a plastic base in a casting process so that plastic material is forced through the holes. Layers of nickel diamond material is applied to the surface of the steel plate.
This invention relates to the fabrication of plastic members and more particularly to a process to manufacture the base for a diamond abrasive stone.
SUMMARY OF THE PRIOR ARTAbrasive stones are often affixed to a plate that is attached to a base such as formed from plastic. Many molding processes are employed in the prior art to fabricate the base supporting abrasives. It is known to apply abrasive stones through a metal plate affixed to the base, such as formed from plastic. Prior techniques, however, have been defective in providing optimum bonding between the plate and base, and do not provide a suitable low shrink rate.
SUMMARY OF THE INVENTIONIt is therefore, an objective of the invention to provide a process for fabricating the base of a diamond bench abrasive stone for sharpening knives and the like The process provides a superior bond between a steel plate and the base. After formation and bonding, the block is then plated with diamond abrasive and nickel.
BRIEF DESCRIPTION OF THE DRAWINGS
Referring now to
The upper steel plate 6 is manufactured with oval holes 22 with conventional progressive punching equipment. The holes 22 are punched through the steel plate in lateral rows 22 in the pattern shown in
The molding process causes the plastic base material to be forced through the holes 22 of the top steel plate 6, assuring that 100% of the surface area of the steel plate 6 is bonded to the plastic base 4. After excess plastic is removed, the surface of the steel plate 6 is ground on a horizontal surface grinder using an aluminum oxide abrasive grinding wheel to remove any blemishes and to guarantee 100% flattening.
After grinding, the base assembly is thoroughly cleaned and flash nickel plated, rinsed, and cleaned and then nickel diamond plated three times on the exposed metal surface of the plate 6 as shown in
Claims
1. A process for manufacturing our abrasive stone composing the step
- punching a plurality of holes through a flat steel palate,
- applying the steel plate to plastic material,
- casting the plastic material to form a base and forcing the plastic material through the plurality of holes,
- grinding the surface of the steel plate,
- applying flash nickel plating to the surface of the plate, and
- applying multiple layers of nickel diamond material on the surface of the plate.
2. The process according to claim 1 wherein said holes are oval and external laterally across the plate in rows.
3. The process according to claim 2 wherein a portion of the steel plate is free of holes.
Type: Application
Filed: Oct 16, 2003
Publication Date: Apr 21, 2005
Inventor: Johnson Qian (Chang Shu)
Application Number: 10/686,032