Edwin H Haefling

56219644, Apr 22, 1997

Jul 19, 1995

8/504019

Kenneth J. Susnjara - Santa Claus IN
Michael P. Hardesty - Dale IN
Edwin H. Haefling - Evanston IN
Robert A. Hardy - Gentryville IN

Thermwood Corporation - Dale IN

B23P 2100
B23B 4100

295271

A toolhead assembly for a machine tool generally consisting of a housing supportable on the machine tool and having at least one elongated bore therein, a liner formed of a structural polymer material disposed in the bore, adhesively secured to the housing and having a cylindrical inner wall surface, a spindle shaft journal in the housing and disposed coaxially in the liner for axial displacement therein, the spindle shaft having a head section rigidly mounted on the spindle shaft and engagable in sliding relation to the liner inner wall to provide fluid chambers on either side thereof, means for injecting fluid under pressure selectively into the chambers for axially displacing the spindle shaft, means for spinning the spindle shaft about its axis and means for securing a tool bit to the spindle shaft.

58422595, Dec 1, 1998

Aug 21, 1996

8/701315

Michael P. Hardesty - Dale IN
David A. Stutsman - Huntingburg IN
Edwin H. Haefling - Evanston IN
Robert A. Hardy - Gentryville IN

Thermwood Corporation - Dale IN

B23B 2932

29 485A

The invention provides a machine tool comprising a base member, a workpiece support means mounted on the base member, a toolhead support means mounted on the base member, a toolhead assembly mounted on the toolhead support means, rotatable about a given axis relative to the toolhead support means, at least two tools mounted on the toolhead assembly, having axes radially disposed and circumferentially spaced relative to the given axis, a means for operating a selected one of the tools when the selected tool is disposed in a predetermined position relative to the workpiece support means operatively interconnecting the toolhead support means and the toolhead assembly for selectively, rotatably indexing the toolhead assembly about the given axis to position a selected one of the tools in the predetermined position; and means for locking the toolhead assembly relative to the toolhead support means when a selected one of the tools is disposed in the predetermined position.

56306857, May 20, 1997

Jul 19, 1995

8/504287

Kenneth J. Susnjara - Santa Claus IN
Michael P. Hardesty - Dale IN
Edwin H. Haefling - Evanston IN
Robert A. Hardy - Gentryville IN

Thermwood Corporation - Dale IN

B23C 106
B23B 3900

409231

A toolhead assembly for a machine tool generally consisting of a housing supportable on the machine tool and having at least one elongated bore therein, a liner formed of a structural polymer material disposed in the bore, adhesively secured to the housing and having a cylindrical inner wall surface, a spindle shaft journal in the housing and disposed coaxially in the liner for axial displacement therein, the spindle shaft having a head section rigidly mounted on the spindle shaft and engagable in sliding relation to the liner inner wall to provide fluid chambers on either side thereof, means for injecting fluid under pressure selectively into the chambers for axially displacing the spindle shaft, means for spinning the spindle shaft about its axis and means for securing a tool bit to the spindle shaft.

54717248, Dec 5, 1995

Aug 23, 1994

8/298096

Kenneth J. Susnjara - Santa Claus IN
Michael P. Hardesty - Dale IN
Edwin H. Haefling - Evanston IN
Robert A. Hardy - Gentryville IN

Thermwood Corporation - Dale IN

B23Q 532
B23B 3916
B23C 108

29 53

A toolhead assembly for a machine tool generally consisting of a housing supportable on the machine tool and having at least one elongated bore therein, a liner formed of a structural polymer material disposed in the bore, adhesively secured to the housing and having a cylindrical inner wall surface, a spindle shaft journal in the housing and disposed coaxially in the liner for axial displacement therein, the spindle shaft having a head section rigidly mounted on the spindle shaft and engagable in sliding relation to the liner inner wall to provide fluid chambers on either side thereof, means for injecting fluid under pressure selectively into the chambers for axially displacing the spindle shaft, means for spinning the spindle shaft about its axis and means for securing a tool bit to the spindle shaft.