L- Chucks and Thread Milling

Question 1

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

Answer 1

BACKPLATE

Question 2

Studs that are attached to an adapter plate

Answer 2

CAMLOCK studs

Question 3

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

Answer 3

KEY

Question 4

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.

Answer 4

CHUCK

Question 5

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

Answer 5

ADAPTER PLATE

Question 6

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

Answer 6

LATHE SPINDLE, NOSE

Question 7

Types of Spindle Noses

Answer 7

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

Question 8

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

Answer 8

3-JAW SELF-CENTERING CHUCK

Question 9

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.

Answer 9

CHUCK KEY

Question 10

Actuates the jaw motion

Answer 10

SCROLL GEAR

Question 11

Drives the SCROLL GEAR along with a square drive socket

Answer 11

PINION/CROWN GEAR SET

Question 12

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

Answer 12

Hexagonal barstock

Question 13

Square or octagonal stock requires a

Answer 13

4-JAW SELF-CENTERING CHUCK

Question 14

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

Answer 14

Rarely used
Expensive

Question 15

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

Answer 15

4-JAW INDEPENDENT CHUCK

Question 16

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

Answer 16

WORM GEAR

Question 17

Profile of a barstock on a chuck

Answer 17

FACING

Question 18

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

Answer 18

RECTANGLES
SQUARES

Question 19

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

Answer 19

Dial Test Indicator or Dial Gage

Question 20

The 4-JAW INDEPENDENT CHUCK can hold pieces concentrically and

Answer 20

eccentrically

Question 21

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

Answer 21

ROUND barstock (most common)
SQUARE barstock
RECTANGULAR barstock

Question 22

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

Answer 22

CNC LATHES

Question 23

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

Answer 23

LATHE BED

Question 24

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

Answer 24

complexity
slippage and marring of the part surface

Question 25

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

Answer 25

COLLET CHUCK

Question 26

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

Answer 26

COLLET

Question 27

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

Answer 27

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

Question 28

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

Answer 28

FALSE, only concentrical

Question 29

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.

Answer 29

DRAW BAR

Question 30

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

Answer 30

INDEXING/INDEXABLE CHUCK

Question 31

Aids in positioning an INDEXING/INDEXABLE CHUCK

Answer 31

INDEXING JAW

Question 32

Aids in clamping an INDEXING/INDEXABLE CHUCK

Answer 32

GRIP JAW

Question 33

Used for holding the shank of a drill

Answer 33

JACOBS CHUCK/ DRILL CHUCK

Question 34

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

Answer 34

KEYLESS

Question 35

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

Answer 35

PIN CHUCK

Question 36

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

Answer 36

THREAD CUTTING

Question 37

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

Answer 37

SPEED, FEED

Question 38

Standard cutting device for THREAD CUTTING

Answer 38

SPCT (SINGLE POINT CUTTING TOOL)

Question 39

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

Answer 39

THREAD CHASER

Question 40

Type of THREAD CHASERS that cuts external threads

Answer 40

TANGENTIAL-TYPE

Question 41

Type of THREAD CHASERS that cuts internal threads

Answer 41

CIRCULAR TYPE

Question 42

Holds and turns each die in a THREAD CUTTING DIE

Answer 42

DIE WRENCH

Question 43

Device which allows external threads to be cut by hand

Answer 43

THREAD CUTTING DIE

Question 44

Holds and turns each die in a TAP

Answer 44

TAP WRENCH

Question 45

Device which allows internal threads to be cut by hand

Answer 45

TAP

Question 46

Internal threads can also be cur with a TAP on a

Answer 46

MACHINE TOOL

Question 47

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

Answer 47

RIGID TAPPING

Question 48

Alternative to RIGGID TAPPING

Question 49

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

Answer 49

FLOAT TAPPING

Question 50

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

Answer 50

FLOATING CHUCK

Question 51

Process to thread large diameter holes without a TAP

Answer 51

THREAD MILLING

Question 52

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.

Answer 52

THREAD MILL