Abrading – Carrier for relatively movable simultaneously usable tools – For radially movable tools
Reexamination Certificate
1999-05-14
2001-01-30
Eley, Timothy V. (Department: 3723)
Abrading
Carrier for relatively movable simultaneously usable tools
For radially movable tools
C451S470000, C451S023000
Reexamination Certificate
active
06179700
ABSTRACT:
TECHNICAL FIELD
This invention relates to mechanisms for honing non round cylinder bores and to an adapter for connecting the honing mechanism with a conventional honing machine.
BACKGROUND OF THE INVENTION
Various mechanisms have been used for honing the bores of elliptical and other non round cylinders used in a few internal combustion engines and potentially usable in other devices. Some of these mechanisms apply constant hydraulic pressure in the process of metal removal. This method has a tendency to follow the original bore geometry rather than correcting it to a desired configuration. Some methods employ three dimensional grinding which generally requires excessive cycle time for commercial production use. U.S. Pat. No. 5,681,210, assigned to the assignee of the present invention, describes a mechanism including a barrel cam external to a conventional honing machine as the principal actuator for the contouring and expansion of honing stones.
SUMMARY OF THE INVENTION
The present invention provides a honing mechanism in which a precision camshaft is located inside a tool body to minimize the actuation linkage and directly drive the honing stones in an elliptical or other desired non round contour as they revolve around the camshaft. A separate vertically movable actuator rod drives expansion shoes that cam associated stone carrying shoes outward and provide steady, high pressure with a small expansion movement for progressively removing stock as well as for stone wear compensation. Preferably, the honing stones are carried on swing arms which facilitate a large and rapid reciprocating movement of the honing stones and their assemblies. A center fed coolant passage feeds coolant to the internal mechanism, which has limited external communication, to maintain an outward coolant flow that keeps chips and abrasive from entering the enclosure and minimizes wear of the precision actuating members.
These and other features and advantages of the invention will be more fully understood from the following description of certain specific embodiments of the invention taken together with the accompanying drawings.
REFERENCES:
patent: 3774346 (1973-11-01), Lin et al.
patent: 3812574 (1974-05-01), Jones et al.
patent: 3884789 (1975-05-01), Czubak
patent: 3922819 (1975-12-01), Bender et al.
patent: 4346534 (1982-08-01), Czubak
patent: 5201618 (1993-04-01), Malarz et al.
patent: 5681210 (1997-10-01), Lin et al.
Bartos Andrew Leslie
Lalone Barry G.
Lin Yhu-Tin
Barr, Jr. Karl F.
Eley Timothy V.
General Motors Corporation
Nguyen Dung Van
LandOfFree
Mechanism for honing non round cylinder bores and machine... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mechanism for honing non round cylinder bores and machine..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanism for honing non round cylinder bores and machine... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2451896