ALFRED T PARRELLA
Engineering in Newtown, CT
License number
Massachusetts 5932
Expiration Date
Jun 30, 1990
Type
Mechanical Engineer
Address
Address
Newtown, CT 06470
Professional information
Pivot Mechanism For Grinding Wheel Infeed
US Patent:
4077163, Mar 7, 1978
Filed:
Jul 28, 1976
Appl. No.:
5/709334
Inventors:
Robert Gordon Bennett - Seymour CT
Alfred Theodore Parrella - Newtown CT
Alfred Theodore Parrella - Newtown CT
Assignee:
USM Corporation - Boston MA
International Classification:
B24B 4900
US Classification:
5116577
Abstract:
The apparatus of this invention is for use in a grinding machine and consists of a mechanism constructed for rotatably mounting the wheelhead support structure of the grinding wheel for movement about an axis eccentric from the axis of the grinding wheel. A lever fixed to the wheelhead structure transmits motion from a lead screw to pivot the wheelhead about its axis, thereby moving the wheel in a manner to provide infeed for the grinding machine. The drive motor for the grinding wheel is separately mounted for coupled movement therewith.
Control Apparatus For Roll Grinders
US Patent:
4371941, Feb 1, 1983
Filed:
Dec 31, 1979
Appl. No.:
6/108338
Inventors:
Ronald J. Gordiski - Ansonia CT
Robert G. Bennett - Seymour CT
Alfred T. Parrella - Newtown CT
Michael Bagnall - Southbury CT
Robert G. Bennett - Seymour CT
Alfred T. Parrella - Newtown CT
Michael Bagnall - Southbury CT
Assignee:
USM Corporation - Farmington CT
International Classification:
G05B 1918, G06F 1546
US Classification:
364475
Abstract:
A digital control system is provided for positioning a tool relative to a workpiece. The tool is preferably a grinding wheel and the workpiece is a roll appropriately mounted within a roll grinding machine. The digital control system receives various infeed commands representative of the different types of infeed positioning that are to be performed during a grinding operation. The digital control system is thereafter operative to combine these infeed commands into a composite set of control signals. These control signals are applied to a single motor within a pivotal infeed arrangement which moves the grinding wheel relative to the workpiece.