Grinding wheel assembly

Patent metadata

Field	Value
Publication number	US-2018290264-A1
Application number	US-201815940453-A
Country	US
Kind code	A1
Filing date	Mar 29, 2018
Priority date	Mar 31, 2017
Publication date	Oct 11, 2018
Grant date	—

Abstract

A grinding wheel assembly is disclosed and includes an arbor in which a pull stud may be installed. Further, the arbor can include a head assembly that includes a mounting plate, a cover plate, and an abrasive body disposed there between. The abrasive is removably engaged with the mounting plate and the cover plate.

First claim

What is claimed is:

1 . An abrasive article comprising:
a body including:
a mounting plate; and
a cover plate, wherein the mounting plate and cover plate are configured to be coupled to each other and form a head assembly including a channel region established between the mounting plate and the cover plate, and wherein the cover plate and the mounting plate are configured to be coupled with a clamping force across the channel region to hold an abrasive body within the channel region and the clamping force is provided by at least one fastener tightened with a torque, T, of at least 20 Newton meters (N●m).

2 . The abrasive article of claim 1 , wherein T is at least 25 N●m, such as at least 30 N●m, at least 35 N●m, or at least 40 N●m.

3 . The abrasive article of claim 2 , wherein T is no greater than 60 N●m, such as no greater than 55 N●m, no greater than 50 N●m, or no greater than 45 N●m.

4 . The abrasive article of claim 1 , further comprising an arbor configured to be coupled to the mounting plate.

5 . The abrasive article of claim 4 , wherein the mounting plate is configured to be disposed between and directly contact the cover plate and the arbor in an assembled state.

6 . The abrasive article of claim 5 , wherein the arbor comprises a proximal end and a distal end, and wherein the proximal end comprises a central opening configured to be engaged with a pull stud.

7 . The abrasive article of claim 4 , wherein the arbor is integrally formed with the mounting plate.

8 . The abrasive article of claim 1 , wherein the mounting plate comprises a generally cylindrical mounting hub extending axially from a contact surface of the mounting plate, the contact surface of the mounting plate configured to engage a portion of an abrasive body and the mounting hub configured to receive the abrasive body there around.

9 . The abrasive article of claim 8 , wherein the cover plate comprises a generally cylindrical support hub extending axially from a contact surface of the cover plate, the contact surface of the cover plate configured to engage a portion of the abrasive body and the support hub configured to extend into the abrasive body.

10 . An abrasive article comprising:
a body including:
a mounting plate; and
a cover plate, wherein the mounting plate and cover plate are configured to be coupled to each other and form a head assembly including a channel region disposed between the mounting plate and the cover plate, and further comprising a gap region defining a gap distance of at least 0.25 mm between the mounting plate and the cover plate in a pre-assembled state.

11 . The abrasive article of claim 10 , further comprising an abrasive body disposed within the channel region between the mounting plate and the cover plate.

12 . The abrasive article of claim 11 , wherein the abrasive body includes an abrasive portion mounted on a backing.

13 . The abrasive article of claim 12 , wherein the backing has a hardness, H B , and the cover plate has a hardness, H CP , and H B is less than H CP .

14 . The abrasive article of claim 12 , wherein the abrasive portion has a thickness, T A , and the backing has a thickness, T B , and T B is greater than T A .

15 . An abrasive article comprising:
a body including:
a mounting plate; and
a cover plate, wherein the mounting plate and cover plate are configured to be coupled to each other and form a head assembly including a channel region disposed between the mounting plate and the cover plate, and further comprising a gap region defining a gap distance of at least 0.2 mm between the mounting plate and the cover plate in an assembled state.

16 . The abrasive article of claim 15 , further comprising multiple abrasive bodies disposed within the channel region between the mounting plate and the cover plate.

17 . The abrasive article of claim 16 , wherein the multiple abrasive bodies comprise a first abrasive body having a first abrasive grit size and a second abrasive body having a second abrasive grit size.

18 . The abrasive article of claim 17 , wherein the first abrasive grit size is different than the second abrasive grit size.

19 . The abrasive article of claim 17 , wherein the first abrasive body is separated from the second abrasive body by at least one spacer.

20 . The abrasive article of claim 16 , wherein the multiple abrasive bodies comprise a first abrasive body having a first outer profile and a second abrasive body having a second outer profile different from the first outer profile.

Assignees

• Saint Gobain Abrasives Inc
• Saint Gobain Abrasifs Sa

Inventors

• Li Jiashu

Classifications

• B24D5/16 Primary

  Bushings; Mountings · CPC title

• B24D5/066

  with segments mounted axially one against the other · CPC title

• B24B9/00

  Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor (B24B21/00 takes precedence; for sharpening cutting edges on tools B24B3/00; removing burrs by loose abrasive material B24B31/00) · CPC title

• B24B45/006 Primary

  Quick mount and release means for disc-like wheels, e.g. on power tools · CPC title

• B24D5/14

  Zonally-graded wheels; Composite wheels comprising different abrasives · CPC title