Timothy L Rashleger

US Patent:

20060011002, Jan 19, 2006

Filed:

Jul 12, 2005

Appl. No.:

11/179105

Inventors:

Timothy Rashleger - Minnetrista MN, US

International Classification:

F16H 25/20

US Classification:

074089230

Abstract:

A machine tool including a system for adjusting the position of a portion of the tool based on thermally induced dimensional change. A linear voltage to distance transducer (LVDT), or a hall effect linear transducer, is mounted at the “floating” end of the ball screw or other machine component of the machine tool to directly sense the thermal expansion of the screw or component. The LVDT includes a slug portion which is received in a coil. The slug is affixed to the floating end of the screw or component and the coil is affixed to the bearing block in which the screw or component is rotatably supported. Thermal expansion of the screw or component causes the slug to move axially within the coil, in turn causing the coil to produce an electrical signal with a varying voltage proportional to the change in position of the slug within the coil.

US Patent:

53302982, Jul 19, 1994

Filed:

Mar 31, 1993

Appl. No.:

8/040674

Inventors:

Gary A. Welch - Chanhassen MN
Timothy L. Rashleger - Tonka Bay MN

Assignee:

IIC, Inc. - Chanhassen MN

International Classification:

B23C 116
B23B 3900

US Classification:

409 80

Abstract:

A milling machine has a lower frame portion with a saddle and a table coupled to the lower frame portion by a knee. The milling machine also has a head with a quill and spindle. The table provides movement of a workpiece relative to the spindle along a first axis. The saddle provides movement of the workpiece relative to the spindle along a second axis. A manual controller provides manual control of the quill. An automatic controller provides automatic control of the quill. The automatic controller and the manual controller are cooperable so that the quill can be manually and automatically controlled.