R - Snap Rings to Screws Flashcards
Name for attaching components together in manufacturing
JOINING/FABRICATION
The 2 categories of JOINING METHODS:
- PERMANENT
- REMOVABLE
Does REMOVABLE always mean REUSABLE?
no
A REMOVABLE JOINING method used on shafts to prevent components, such as gears or pulleys, from sliding axially
RETAINING RING/SNAP RING (CIRCLIP outside the US)
type of fastener that is blanked from thin sheet metal in a near circular shape
C-RING
C-RING that is intended to be installed into a groove cut into the outside surface of a shaft
EXTERNAL C-RING
C-RING that is used inside the bore of a hole, most often as a “bearing retainer”.
INTERNAL C-RING
What is the difference between the internal and external C-RINGS?
internal C-RING has a wider gap than the external version
A specialized tool with 2 small pins which engage with the pierced holes in the ring lugs, intended to be used with retaining rings.
RETAINING RING PLIERS/SNAP RING PLIERS
An “external only” version of retaining rings, still need a groove but are installed radially by being pushed into the groove from the side.
E-RINGS
Fasteners that perform the same role as SNAP RINGS but without the need for grooves
- TOOTHED RETAINING RINGS
- SELF LOCKING RINGS
- STARLOCK RETAINGING WASHERS
- PUSH-ON RETAINING RINGS
What is the primary role of a SHAFT KEY?
Torque
A 3-part system, requiring a slot in the shaft, a corresponding slot in the hub, and the KEY itself.
SHAFT KEY
Name the different KEY configurations. (5)
- square
- rectangular/flat
- gib-head
- pratt & whitney
- woodruff
the standard KEY configuration, normally seated in a keyseat slot which runs the full length of a shaft.
SQUARE KEY
key configuration used where the broached keyway in the hub is reduced in depth because of limited wall thickness
RECTANGULAR/FLAT KEYS
key configuration often tapered like a wedge, have a raised blocky portion at one end which remains exposed to make the key easy to pull out
GIB-HEAD KEYS
key configuration that has rounded ends and is designed for use in a localized keyseat slot that has been cut with an end mill
PRATT & WHITNEY KEYS
key configuration that is used in a D-shaped keyseat created by plunge cutting with a keyway cutter
WOODRUFF KEYS
another type of removable fastener and can be used as CIRCULAR/ROUND KEYS when a broach is not available
PINS
pins that are generally straight with a small chamfer at their ends to facilitate starting in the hole
DOWEL PINS
pins that act like a wedge when pushed into a hole of the correct size, can only be inserted one way and come out the same way they were inserted
TAPERED PINS
pins that rely on some form of deformation to create additional friction, generally damage the hole, should not be removed or reinserted frequently
GROOVED PINS