L- Chucks and Thread Milling Flashcards

1
Q

In order to accommodate a number of different work holding devices it is common practice to fit a _______ to the spindle nose using the appropriate attachment method

A

BACKPLATE

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2
Q

Studs that are attached to an adapter plate

A

CAMLOCK studs

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3
Q

Allows the chuck to easily attach or release by sequentially rotating cams in the BACKPLATE

A

KEY

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4
Q

Is attached to the main spindle of a lathe and plays the role of transmitting the rotation of the spindle to the workpiece and of holding the workpiece tightly so that the workpiece, which is rotating at a high speed, does not fly away due to centrifugal force.

A

CHUCK

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5
Q

Fitted to the rear of a work holding device and consists of a ring of CAMLOCK studs

A

ADAPTER PLATE

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6
Q

The output end of a ______ _______ terminates with the SPINDLE _____

A

LATHE SPINDLE, NOSE

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7
Q

Types of Spindle Noses

A

L-Type Long Taper Key Drive Spindle Nose
Threaded Spindle Nose

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8
Q

The most common type of work holding device used on LATHES is the

A

3-JAW SELF-CENTERING CHUCK

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9
Q

Moves the three jaws of a 3-JAW SELF-CENTERING CHUCK together towards or away the center by rotating in a given direction. Tightens and loosens the jaws.

A

CHUCK KEY

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10
Q

Actuates the jaw motion

A

SCROLL GEAR

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11
Q

Drives the SCROLL GEAR along with a square drive socket

A

PINION/CROWN GEAR SET

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12
Q

The most common stock used in a 3-JAW SELF-CENTERING CHUCK

A

Hexagonal barstock

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13
Q

Square or octagonal stock requires a

A

4-JAW SELF-CENTERING CHUCK

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14
Q

Why is it not typical to use a 4-JAW SELF-CENTERING CHUCK

A

Rarely used
Expensive

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15
Q

What is used instead of the 4-JAW SELF-CENTERING CHUCK

A

4-JAW INDEPENDENT CHUCK

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16
Q

Used in a 4-JAW INDEPENDENT CHUCK to move each of the four jaws independently of one another

A

WORM GEAR

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17
Q

Profile of a barstock on a chuck

A

FACING

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18
Q

The 4-JAW INDEPENDENT CHUCK can grip ____ because its jaws move independently

A

RECTANGLES
SQUARES

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19
Q

Device used to adjust and center the jaws of a 4-JAW INDEPENDENT CHUCK

A

Dial Test Indicator or Dial Gage

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20
Q

The 4-JAW INDEPENDENT CHUCK can hold pieces concentrically and

A

eccentrically

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21
Q

Types of barstock that can be held eccentrically on a 4-JAW INDEPENDENT CHUCK

A

ROUND barstock (most common)
SQUARE barstock
RECTANGULAR barstock

22
Q

What machine reduces the likelihood of an accident with a CHUCK KEY?

A

CNC LATHES

23
Q

What does the CHUCK KEY hit before bouncing with high energy to strike the operator’s jaw?

A

LATHE BED

24
Q

What prevents 3 and 4-JAW CHUCKS from running perfectly true or with positional repeatibility?

A

complexity
slippage and marring of the part surface

25
Q

What solves the complexity and slippage and marring of the part surface issues with the 3 and 4-JAW CHUCKS?

A

COLLET CHUCK

26
Q

A metal cylinder with a flared taper end designed to mate with the chamfered bore in the body

A

COLLET

27
Q

Why is an entire set of collets needed? ex. 5C Collet Set

A

The range of finger flexibility to grip a workpiece is limited which makes a set needed to cover a wide range of grip diameters

28
Q

TRUE or FALSE:
It is possible to use a COLLECT CHUCK for eccentric workpieces

A

FALSE, only concentrical

29
Q

A long rod which passes through the hollow spindle and into the rear of the COLLET CHUCK. Pushes or pulls to actuate the gripping/releasing functions respectively.

A

DRAW BAR

30
Q

The best type of chuck to use in an automated CNC LATHE. Hydraulically actuated 2-JAW CHUCK.

A

INDEXING/INDEXABLE CHUCK

31
Q

Aids in positioning an INDEXING/INDEXABLE CHUCK

A

INDEXING JAW

32
Q

Aids in clamping an INDEXING/INDEXABLE CHUCK

A

GRIP JAW

33
Q

Used for holding the shank of a drill

A

JACOBS CHUCK/ DRILL CHUCK

34
Q

Designs that are tightened and loosened by hand simply by rotation of an outer knurled sleeve

A

KEYLESS

35
Q

Designed to grip exceedingly small diameter drill shanks. Comes with its own straight shaft that is big enough to be gripped by a JACOBS CHUCK

A

PIN CHUCK

36
Q

Produces precision threads of inferior strength compared to ROLLED THREADS. Can be performed on a LATHE.

A

THREAD CUTTING

37
Q

To perform THREAD CUTTING on a LATHE there must be coordination between the workpiece rotational ______ and the cutting tool _____ rate

A

SPEED, FEED

38
Q

Standard cutting device for THREAD CUTTING

A

SPCT (SINGLE POINT CUTTING TOOL)

39
Q

Precision ground tool that mimics a bank of SPCT all side-by-side at the correct pitch

A

THREAD CHASER

40
Q

Type of THREAD CHASERS that cuts external threads

A

TANGENTIAL-TYPE

41
Q

Type of THREAD CHASERS that cuts internal threads

A

CIRCULAR TYPE

42
Q

Holds and turns each die in a THREAD CUTTING DIE

A

DIE WRENCH

43
Q

Device which allows external threads to be cut by hand

A

THREAD CUTTING DIE

44
Q

Holds and turns each die in a TAP

A

TAP WRENCH

45
Q

Device which allows internal threads to be cut by hand

A

TAP

46
Q

Internal threads can also be cur with a TAP on a

A

MACHINE TOOL

47
Q

The FEED slows to a stop and reverses direction at the bottom of the hole, while the SPEED slows and reverses as well

A

RIGID TAPPING

48
Q

Alternative to RIGGID TAPPING

A
49
Q

Device that utilizes a special FLOATING CHUCK to take care of the FEED/SPEED mismatch in the controlling by allowing the TAP to disconnect from the drive and feed itself at the end of its travel

A

FLOAT TAPPING

50
Q

Special CHUCK that has a built in compliance (slop) in the transmission

A

FLOATING CHUCK

51
Q

Process to thread large diameter holes without a TAP

A

THREAD MILLING

52
Q

Cutting tool used to thread large diameter holes without a TAP. Has a diameter small enough for it to be fed into a precut hole without touching the internal bore at first.

A

THREAD MILL