The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 1993
Filed:
Mar. 17, 1993
David B Wood, III, Maineville, OH (US);
Cincinnati Milacron Inc., Cincinnati, OH (US);
Abstract
An indexing system for the rotary work changer of a machining center for supporting and interchanging work-holder pallets between the machining zone and the load/unload zone of the machining center. The indexing system comprises a hydraulically powered rotary actuator attached to the work changer and having first and second ports, a hydraulic fluid pressure line and a hydraulic fluid return line, a directional valve for connecting the hydraulic fluid pressure line to either one of the first and second ports of the actuator depending on the desired direction of rotation of the work changer, and for connecting the other of the actuator first and second ports to the hydraulic fluid return line, a control valve connected between the actuator first and second ports and the directional valve to regulate the flow of return fluid from the actuator so as to cause the work changer to accelerate, reach a maximum speed and then decelerate to a slow speed just before reaching the desired one of its first and second positions.