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Doosan > Mill Basics > Flashcards

Mill Basics Flashcards

1
Q

Arbor

A

A device used on a conventional milling machine to mount a mill horizontally.

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2
Q

Ballscrew

A

The threaded device that controls the precise movement of the various components of the mill.

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3
Q

Boring

A

The process of using a single-point tool to enlarge a preexisting hole.

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4
Q

Carbide Insert

A

A cutting bit made of hard material that has multiple cutting edges. Once a cutting edge is excessively worn, it can be indexed to another edge, or the insert can be replaced.

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5
Q

CNC Machining Center

A

A sophisticated CNC machine that can perform mulitiple machining operations in the same setup with a variety of tools.

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6
Q

Column

A

The vertical support, or backbone, of a milling machine.

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7
Q

Column-And-Knee Milling Machine

A

A basic type of milling machine whose spindle is mounted in the column, and whose worktable rests on an adjustable knee.

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8
Q

Contour

A

A curved surface or dimension that is cut into a workpiece.

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9
Q

Depth Of Cut

A

The thickness of material removed by one pass of the cutting tool.

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10
Q

Drilling

A

The process of using a multi-point tool to penetrate the surface of a workpiece and make a round hole.

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11
Q

End Mill

A

A thin, tall mill cutter with cutting edges that wind up the sides. Both the bottom and side of the end mill are used during milling operations. End mills resemble drills.

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12
Q

Face Mill

A

A flat mill cutter with multiple cutting teeth surrounding the tool. The bottom of the face mill is primarily used during milling operations.

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13
Q

Face Milling

A

A milling operation in which the surface of the workpiece is perpendicular to the spindle axis.

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14
Q

Feed

A

The rate that the cutting tool travels along the surface of the workpiece.

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15
Q

Fixture

A

A customized device that is used to position and hold a workpiece in place. On a mill, fixtures are normally used to machine flat surfaces parallel to the table.

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16
Q

Flange

A

A ring or collar surrounding the toolholder that allows the tool to be grasped by the toolchanger.

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17
Q

High-Speed Steel

A

A tool steel used to machine metals at high cutting speeds. High-speed steel stays hard at high temperatures and resists abrasion.

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18
Q

Horizontal Machining Center

A

A machining center with a spindle that is parallel to the ground floor.

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19
Q

Indexed

A

To rotate a carbide insert to present a new cutting edge.

20
Q

Interrupted Cutting

A

A cutting process in which the cutting edge of the tool is not in constant contact with the surface of the workpiece.

21
Q

Knee

A

The device supported by the elevating screw that raises and lowers and guides the back and forth motion of the saddle.

22
Q

Machine Control Unit

A

A small, powerful computer that controls and operates a CNC machine.

23
Q

Mill

A

A multi-point tool that is used to remove metal from the surface of a workpiece.

24
Q

Milling Machine

A

A machine that uses a multi-point tool to remove metal from the surface of a workpiece.

25
Q

Multi-Point Tool

A

A machining tool that has two or more cutting edges.

26
Q

Pallet

A

An automatic moveable table that supports a workpiece and slides or pivots into and out of the machining center. Multiple pallets allow an operator to set up a part while another is being machined.

27
Q

Part Program

A

A series of numerical instructions used by a CNC machine to perform the necessary sequence of operations to machine a specific workpiece.

28
Q

Peripheral Milling

A

A milling operation in which the cutting edge of the mill is parallel to the axis of spindle rotation.

29
Q

Pocket

A

An interior recess that is cut into the surface of a workpiece.

30
Q

Pot

A

One of the numerous slots of the toolchanger that holds a cutting tool in its toolholder.

31
Q

Reaming

A

The process of using a cutting tool with straight cutting edges to enlarge or smooth holes that have been previously drilled.

32
Q

Retention Knob

A

An knob screwed into the end of the toolholder that locks the tool in place within the spindle.

33
Q

Servomotor

A

A special motor used in CNC machines that turns the ballscrew to move parts with precision.

34
Q

Slot

A

A narrow channel cut into the surface of a workpiece.

35
Q

Speed

A

The rate at which the cutting edge of the tool moves past the workpiece surface at the point of contact. On a mill, speed determines how fast the spindle rotates.

36
Q

Spindle

A

The rotating device that holds and spins the toolholder and cutting tool on the mill.

37
Q

Tapered Shank

A

The long, narrow portion of a toolholder that is typically shaped like a cone.

38
Q

Tapping

A

The process of cutting internal threads in a workpiece with a multi-point tool.

39
Q

Toolchanger

A

A device that arranges multiple cutting tools in order and then positions these cutting tools for replacement in the machining center.

40
Q

Toolholder

A

The device used to rigidly hold a cutting tool in place. Toolholders are available in standardized sizes.

41
Q

Vertical Machining Center

A

A machining center with a spindle that is perpendicular to the ground floor.

42
Q

Vise

A

A workholding device with two jaws that grip and hold a workpiece in place.

43
Q

Workholder

A

A device used to position and hold a workpiece in place.

44
Q

Workpiece

A

A part that is being machined.

45
Q

Worktable

A

The part of a machine tool that supports the workpiece and any work holding devices.

Doosan (5 decks)

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