Equipment Part Definitions, etc..

Question 1

Head stock

Answer 1

contains the spindle for various work holding attachment

Question 2

spindle

Answer 2

revolves in heavy duty bearings, rotated by belts, gears or combination of both.
The spindle is hollow and tapered to allow for the use of a knock out bar and for long stock to be turned without dangerous over hang

Question 3

Tailstock

Answer 3

supports the outer end of work. Can be adjusted to different lengths.

Is essential for drilling and is necessary to support long work being rotated.

Question 4

cross slide

Answer 4

transverse tool movement

Question 5

Compound rest

Answer 5

Angular tool movement

Question 6

Parting

Answer 6

Operation of cutting off material (can also be used to cut grooves)

Question 7

Tool Post

Answer 7

Cutting tools mount to this

Question 8

What is a lathe dog

Answer 8

A device clamped to one end of the material to drive the workpiece.

Question 9

types of lathe dog

Answer 9

1. Bent Tail standard dog
2. Bent Tail safety dog
3. Clamp Type Dog

Question 10

What is a bent tail standard dog

Answer 10

Has set screw exposed and is used for cylindrical work

Question 11

What is bent tail safety dog

Answer 11

similar to the standard but has the set screw recessed. Usually preferred over the standard.

Question 12

What is the clamp type dog

Answer 12

Designed for turning square/ rectangular work.

Question 13

Types of spindles

Answer 13

1. Threaded spindle
2. Cam lock spindle
3. Long Tapered Key spindle

Question 14

What is the threaded spindle

Answer 14

permits attachment onto the threads. It seats on the spindle flange. Less used in modern era.

Question 15

Cam lock spindle

Answer 15

Has a short taper that fits in a tapered recess. The studs on the attachment slide into the holes and are locked by tightening the cams. Most common in the modern era.

Question 16

Long Key tapered

Answer 16

Has a protruding taper and keyway which an attachment fits on. When mounting the attachments the key way will be on top slide over the key until you are able to engage the threads.

Question 17

Lead screw

Answer 17

Transmits power to the carriage through gearing and clutch arraignment in the carriage apron

Question 18

variable speed control

Answer 18

controls the spindle speed

Question 19

Power speed lever

Answer 19

Engages clutch for automatic power feed and automatic power cross feed.

Question 20

half nut lever

Answer 20

engages the half nuts for threading

Question 21

carriage handwheel

Answer 21

moves the entire unit left and right

Question 22

Collets

Answer 22

Vary in sizes, have three even sections that are split slightly more than half way, The collets hold the piece being turned.

Question 23

Types of collets

Answer 23

Steel collet: Made of steel and has no way for adjustments in size. The size is specific not a range

Steel w/ Rubber: Collets of this type have segments bonded to rubber which allows a range of .100”

Question 24

Shapes of collets

Answer 24

Primarily the round but also available in hexagonal, square, and octagonal. The rubber type is only available in the round shape.