Ultra-precision positioning assembly
Abstract
An apparatus and method is disclosed for ultra-precision positioning. A slide base provides a foundational support. A slide plate moves with respect to the slide base along a first geometric axis. Either a ball-screw or a piezoelectric actuator working separate or in conjunction displaces the slide plate with respect to the slide base along the first geometric axis. A linking device directs a primary force vector into a center-line of the ball-screw. The linking device consists of a first link which directs a first portion of the primary force vector to an apex point, located along the center-line of the ball-screw, and a second link for directing a second portion of the primary force vector to the apex point. A set of rails, oriented substantially parallel to the center-line of the ball-screw, direct movement of the slide plate with respect to the slide base along the first geometric axis and are positioned such that the apex point falls within a geometric plane formed by the rails. The slide base, the slide plate, the ball-screw, and the linking device together form a slide assembly. Multiple slide assemblies can be distributed about a platform. In such a configuration, the platform may bemore »
- Inventors:
-
- San Francisco, CA
- Livermore, CA
- Pleasanton, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 874535
- Patent Number(s):
- 6408526
- Assignee:
- The Regents of the University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23Q - DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- ultra-precision; positioning; assembly; apparatus; method; disclosed; slide; base; provides; foundational; support; plate; moves; geometric; axis; ball-screw; piezoelectric; actuator; separate; conjunction; displaces; linking; device; directs; primary; force; vector; center-line; consists; link; portion; apex; located; directing; set; rails; oriented; substantially; parallel; direct; movement; positioned; falls; plane; formed; form; multiple; assemblies; distributed; platform; configuration; raised; lowered; tipped; tilted; jointly; independently; displacing; plates; substantially parallel; /33/269/
Citation Formats
Montesanti, Richard C, Locke, Stanley F, and Thompson, Samuel L. Ultra-precision positioning assembly. United States: N. p., 2002.
Web.
Montesanti, Richard C, Locke, Stanley F, & Thompson, Samuel L. Ultra-precision positioning assembly. United States.
Montesanti, Richard C, Locke, Stanley F, and Thompson, Samuel L. Tue .
"Ultra-precision positioning assembly". United States. https://www.osti.gov/servlets/purl/874535.
@article{osti_874535,
title = {Ultra-precision positioning assembly},
author = {Montesanti, Richard C and Locke, Stanley F and Thompson, Samuel L},
abstractNote = {An apparatus and method is disclosed for ultra-precision positioning. A slide base provides a foundational support. A slide plate moves with respect to the slide base along a first geometric axis. Either a ball-screw or a piezoelectric actuator working separate or in conjunction displaces the slide plate with respect to the slide base along the first geometric axis. A linking device directs a primary force vector into a center-line of the ball-screw. The linking device consists of a first link which directs a first portion of the primary force vector to an apex point, located along the center-line of the ball-screw, and a second link for directing a second portion of the primary force vector to the apex point. A set of rails, oriented substantially parallel to the center-line of the ball-screw, direct movement of the slide plate with respect to the slide base along the first geometric axis and are positioned such that the apex point falls within a geometric plane formed by the rails. The slide base, the slide plate, the ball-screw, and the linking device together form a slide assembly. Multiple slide assemblies can be distributed about a platform. In such a configuration, the platform may be raised and lowered, or tipped and tilted by jointly or independently displacing the slide plates.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}