Mechanical Definitions |
Die holder : A die holder is used to hold the die for
cutting external threads manually like on pipes. |
Diesel index : Diesel index is a diesel fuel rating,
based on their ignition qualities. High quality fuel has a high
index number. |
Differential screw : A type of compound screw which produces
a motion equal to the difference in motion between the two component
screws. |
Dipper dredge : A power shovel resembling a grab crane
mounted on a flat bottom boat for dredging under water. It can
also be termed as dipper shovel. |
Direct-connected : The connection between a driver and
a driven part, as a turbine and an electric generator, without
intervening speed changing devices. Eg: Gears. |
Direct-coupled : Joined without intermediate connections.
|
Direct extrusion : Extrusion by movement of ram and product
in the same direction against a die office. |
Discharge-tube leak indicator : Using this device we
can detect the presence of a tracer gas by using a glass tube
attached to a high voltage source. The presence of leaked gas
is indicated by the color of the electric discharge. |
Disk centrifuge : A centrifuge with a large bowl having
a set of disks that separate the liquid into thin layers to
create shallow setting chambers. |
Disk engine : A rotating, engine in which the piston
is a disk. |
Disk grinder : A grinding machine that employs abrasive
disks. |
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