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:
Dec. 08, 1981
Filed:
Sep. 10, 1979
Gerald V Roch, Indianapolis, IN (US);
Hurco Manufacturing Company, Inc., Indianapolis, IN (US);
Abstract
A milling machine includes a C-shaped frame, tool support member movable in a vertical direction, a saddle member movable in a transverse direction, a work table movable in a longitudinal direction, a tool drive unit, a tool knock-out assembly and two oppositely positioned and removable bearing ways associated with each direction of travel. For the vertical axis the bearing ways are between the C-shaped frame and the tool support member. The tool drive unit includes a hollow tool spindle and a drive motor with a vertically extending output shaft which is rigidly and coaxially connected to the hollow tool spindle. The tool knock-out assembly includes a spring-loaded tool collet assembly and a double-action air cylinder arranged in a surrounding coaxial relationship with the output shaft. The tool collet assembly includes a spindle shaft surrounded by a vertical stack of belleville spring washers and the distal end is fitted with a tool collet which includes six collet arms and this tool collet assembly is movable between a tool-gripped position and a tool-released position. Each vertical axis bearing way longitudinally extends in a vertical direction and includes a track shaft portion attached to the C-shaped frame and a bearing case portion attached to the tool support member. Reciprocating relative motion between the tool support member and the C-shaped frame occurs at the two bearing way locations and the drive motor for the tool moves with the hollow tool spindle in a vertical direction.