Hobbing accessory for vertical milling machine
Patent 5634250 Issued on June 3, 1997. Estimated Expiration Date: 
June 28, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 28, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorAssigneeApplicationNo. 495917 filed on 06/28/1995US Classes:29/26A, Drilling and other29/57, Attachment409/11, Hobbing409/144, With detachable or auxiliary cutter support to convert cutting action409/165, Including means to support work for rotation during operation409/228, Including cutter limited to rotary motion409/235Machine frameExaminersPrimary: Howell, Daniel W.Attorney, Agent or FirmInternational ClassesB23F 005/22B23P 025/02 AbstractA hobbing accessory is disclosed for a vertical milling machine of a type comprising a column, a knee mounted to the column so as to be vertically positionable with respect to the column, a saddle mounted to the knee so as to be horizontally positionable with respect to the knee, toward and away from the column, a table mounted to the saddle so as to be horizontally positionable with respect to the saddle, in opposite directions across the column, a head projecting from the column, an arbor mounted operatively to the head and rotatable about a generally vertical axis, and a motor for rotating the arbor about the generally vertical axis. The hobbing accessory comprises a hob mountable to the arbor so as to be conjointly rotatable with the arbor about the generally vertical axis, an encoder mountable to the head for encoding rotational positions of the hob with respect to a fixed frame of reference, as the hob is rotated about the generally vertical axis, and for producing signals reflecting the encoded positions, a rotatable chuck, which is mountable to the table so as to be conjointly positionable with the table, for mounting a workpiece so as to permit the workpiece to be conjointly rotated with the chuck about a generally horizontal axis, a motor for rotating the chuck, and a controller responsive to signals produced by the encoder for controlling the motor for rotating the chuck.Other References
Field of SearchHobbingTo infeed along axis of work rotation With detachable or auxiliary cutter support to convert cutting action Including means to support work for rotation during operation With angular movement of work Including cutter limited to rotary motion Including cutter limited to rotary motion Cutter turning about vertical axis Machine frame Convertible from lathe Tailstock Drilling and other Attachment Revolvable cutter heads Attachment DRILL PRESS ATTACHMENT FOR TURNING | |
