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Browse Prior Art Database

Top and Bottom Driven Robot

IP.com Disclosure Number: IPCOM000107431D
Original Publication Date: 1992-Feb-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Sendelweck, M: AUTHOR

Abstract

In the design of automated libraries (cassette tape or optical discs) it is important to get as many cassettes in a given volume as possible. The robotics in the library need to be compact so that it can reach as much of the volume in the given size box as possible. This makes more of the volume of the box accessible storage. High-speed response is also a goal of the robotics in the library. This top- and bottom- driven robot is more compact and lightweight than other methods of configuring robots for libraries. The design is lightweight and stiff for fast response. It is compact for efficient use of volume. Stiffness is better because it is held in position at both top and bottom.

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Top and Bottom Driven Robot

       In the design of automated libraries (cassette tape or
optical discs) it is important to get as many cassettes in a given
volume as possible.  The robotics in the library need to be compact
so that it can reach as much of the volume in the given size box
as possible.  This makes more of the volume of the box accessible
storage.  High-speed response is also a goal of the robotics in the
library.  This top- and bottom- driven robot is more compact and
lightweight than other methods of configuring robots for libraries.
The design is lightweight and stiff for fast response.  It is compact
for efficient use of volume.  Stiffness is better because it is held
in position at both top and bottom.

      In the figure, the robot is driven by top motor 9 and bottom
motor 6.  The motors have integral encoders, which provide positional
and velocity feedback.  The drive is positive and is done by gears in
mesh with racks 5 and 10. A control system keeps motors in positional
synchronization by using the encoders as feedback.  The robot rides
on linear bearings 7 and 2 which ride on rods 1 and 4.  Mast 8
is framing to hold the robot together.  The grippers or
cassette-handling mechanism (not shown) travels up and down on mast
3.