O - Milling to Bandsaws Flashcards
(61 cards)
vital to modern subtractive manufacturing, available in manual and CNC variants, can cut virtually any machinable shape when combined with TURNING.
VERTICAL MILLING
The 3 different names for the manual version of VERTICAL MILLING
- vertical mill
- knee mill
- bridgeport
Used primarily for machines that are more compact in size and therefore suitable for smaller workshops where footprint and ceiling height are limited. Another name for a vertical milling machine.
KNEE MILL
A pioneering manufacturer of full-size machines founded in Bridgeport, Connecticut. Another name for a vertical milling machine.
BRIDGEPORT
In what way does a VERTICAL MILLING MACHINE resemble a DRILL PRESS?
since it has a single, driven vertical spindle that moves up and down
“Beefier” version of a press and has an x-y-z indexable table for work holding and positioning
MILL
Although it is possible to attach a drill to the spindle of a MILL (via a COLLET CHUCK), the tool bit of choice is the _______ ______.
MILLING CUTTER
The most common type of milling cutter, usually made of HSS, can be single, double, or triple-coated, usually have 3 or more blades, and can produce a fairly good surface finish.
END MILL
An END MILL with only 2 blades available, used to remove material quickly (rough cutting/roughing).
SLOT MILL
The ____ _____ is first used to rapidly remove material, followed by a tool swap to a 3+ bladed ___ ____ for a lighter finish cut with a superior surface finish.
SLOT MILL; END MILL
What can MILLING CUTTERS do that Shapers could not?
PLUNGE into the workpiece, changing path direction (L-shaped slot)
What must the MILLING CUTTER be capable of in order to plunge into the workpiece?
cutting all the way to the center of its face.
Characteristics of CENTER CUTTING
- one or more cutting edges at the tip
- allows cutter to plunge, drill, or ramp
- greater variety of applications
Characteristics of NONCENTER CUTTING
- used for side cuts of contouring an exterior surface
- used where plunging is not necessary
Many modern tool bits, including INDEXABLE END MILLS, use the convenience of _______ _______.
CUTTING INSERTS
Unlike those used for single-point lathe tools, these are designed to cut along 2 edges at the same time.
CUTTING INSERTS
Another common milling operation used to quickly reduce the thickness of a workpiece.
FACE MILLING
Large discs with teeth on the periphery of the face, and are rarely ground from the solid material, use a ring of INSERTS.
FACE MILLS
A special type of groove often cut into machine tool tables or lathe face plates. They are milled in a 2-stage operation.
T-SLOTS
What are the 2 stages of malling a T-SLOT?
- multiple passes using a slender end mill to progressively cut the vertical groove
- use a special T-SLOT CUTTER to create the lower horizontal portion
A milling operation achieved with a single bit similar to the appearance of the T-SLOT cutter.
KEYWAY CUTTING
Has a shank with a curved reduction adjacent to the bladed end.
KEYWAY/KEYSEAT CUTTER
What is an advantage to KEYWAY CUTTERS?
They can cut the D-shaped seating groove needed for WOODRUFF KEYS
What kinds of odd shapes are MILLING CUTTERS available for special applications?
- BALL END MILLS to cut round-bottomed grooves
- DOVETAIL MILLS to make dovetail grooves
- CHAMFERING MILLS to put a chamfer on an edge
- CORNER ROUNDING MILLS to soften edges with a curve
