Abstract: This invention relates generally to a pneumatic, hydraulic or other media driver, rotating-reciprocating cylinder apparatus to be mounted on the proximal end of CNC lathe spindles, vertical or inverted machining centers, hydraulic machining work cells or rotary transfer machines to actuate work holding chucks, work holding fixtures, clamping apparatus or work supports on the distal end of said spindles. More specifically, this invention relates to an actuating system with the capability of boosting the input hydraulic pressure to the holding device by a pre-set multiple up to 5000 psi where the boost pump is integral to and rotates with the clamp cylinder assembly.
Type:
Application
Filed:
August 14, 2009
Publication date:
December 10, 2009
Applicant:
Stephens Dynamics, Inc.
Inventors:
Gregory A. Stephens, Alan Claxton, David Claxton, Thomas Thompson
Abstract: This invention relates generally to a pneumatic and hydraulic rotating, reciprocating cylinder apparatus to be mounted on the proximal end of CNC lathe spindles, vertical or inverted machining centers, hydraulic machining work cells or rotary transfer machines to actuate work holding chucks, work holding fixtures, clamping apparatus or work supports on the distal end of said spindles. More specifically, this invention relates to an actuating system with the capability of boosting the input hydraulic pressure to the holding device by a pre-set multiple up to 5000 psi.
Type:
Application
Filed:
November 2, 2006
Publication date:
May 8, 2008
Applicant:
Stephens Dynamics, Inc.
Inventors:
Gregory A. Stephens, Alan Claxton, David Claxton, Thomas Thompson
Abstract: In accordance with the present invention a pneumatic or hydraulic rotating cylinder capable of very high speeds is embodied. It is constructed of light weight materials, minimizing the mass but is given the ability to run at high speed in spite of vibrating environments, supply line condensation, contaminants and various attitudinal mounting by the anti-seizure insert bearing inserted into the distributor and sleeving the rotating shaft.
Type:
Grant
Filed:
January 6, 2005
Date of Patent:
July 25, 2006
Assignee:
Stephens Dynamics, Inc.
Inventors:
Phillip D. Clark, Alan Claxton, David Claxton, Thomas Thompson, Gregory A. Stephens
Abstract: In accordance with the present invention a pneumatic or hydraulic rotating cylinder capable of very high speeds is embodied. It is constructed of light weight materials, minimizing the mass but is given the ability to run at high speed in spite of vibrating environments, supply line condensation, contaminants and various attitudinal mounting by the anti-seizure insert bearing inserted into the distributor and sleeving the rotating shaft.
Type:
Application
Filed:
January 6, 2005
Publication date:
July 14, 2005
Applicant:
Stephens Dynamics, Inc.
Inventors:
Phillip Clark, Alan Claxton, David Claxton, Thomas Thompson, Gregory Stephens
Abstract: A rotary cylinder assembly for a machine tool is provided that includes a lock check system that locks the work piece to the machine tool chuck and prevents extension and retraction of the work piece in the event of loss of hydraulic or pneumatic pressure. The rotary cylinder assembly includes a shaft end cover coupled between a fluid shaft housing and a cylinder body. The shaft end cover houses the lock check system and includes a number of flow paths that provide for extension and retraction of a piston rod connector housed in the cylinder body in response to fluid pressure supplied from the fluid shaft housing. The shaft end cover and lock check system are configured to allow small diameter cylinder bodies to be coupled thereto while providing the safety and functional features associated with the lock check system.
Type:
Grant
Filed:
May 25, 2001
Date of Patent:
June 24, 2003
Assignee:
Stephens Dynamics, Inc.
Inventors:
Philip Dan Clark, Alan Claxton, David Claxton, Gregory A. Stephens