Original Publication Date: 1994-Apr-01
Included in the Prior Art Database: 2005-Mar-26
A communication link is provided with the use of an infrared non-contact receive and transmitter arrangement for a rotary indexing table.
communication link is provided with the use of an infrared
non-contact receive and transmitter arrangement for a rotary indexing
In the design
of an automated cell incorporating a rotary
indexing table, the placement of electrical equipment is generally
limited to stationary support or housings within the cell, located
anywhere but on the rotary table itself. Introducing this equipment
onto the table complicates electrical connections because hard wiring
cannot follow the continuous unidirectional rotation of the table.
As a result, rotary contacts are usually employed.
manufacturing cell shown in the Figure includes four rotary
servo units 1 mounted on a top plate of a rotary indexing table 2.
It is these rotary servo units 1 which require electrical power. For
this reason, a cell, such as shown in the Figure, makes use of
mercury contacts. But each rotary servo unit 1 also requires a
system of communication. A cell computer, located inside a
communication cabinet 3, must be able to direct the rotary servo
units 1 to perform, e.g., a proper orientation task as well as to
verify that the required orientation took place. This presents a
design obstacle, that of linking the computer to the four rotary
servo units 1.
In the cell
shown in the Figure, an electrical cabinet 4 is
mounted over and directly connected to the indexing table 2.
Attached to the cabinet 4 is a cylindrical communication unit 5. It