Turning

Question 1

Rotational

Answer 1

cylindrical or disc-like shape in which a cutting tool removes material from a rotating workpiece (drilling is included).

Question 2

Non-rotational

Answer 2

block-like or plate-like shape achieved by linear motions of the workpieces combined with either rotating or linear tool motions.

Question 3

Generating

Answer 3

geometry of the workpiece is determined by the feed

trajectory of the cutting tool.

Question 4

Forming

Answer 4

shape of the workpiece is created by the geometry of the cutting tool.

Question 5

Turning

Answer 5

is a machining process in which a single-point tool removes material from a workpiece to create external cylindrical and conical surfaces.

Question 6

Roughing

Answer 6

used to remove large amounts of material using large depth of cuts and slow speeds; requires less time to remove material, though dimensional accuracy and surface finish quality are lost.

Question 7

Finishing

Answer 7

uses light passes with speeds as fine as necessary to produce the desired finish; One to two passes are usually required to produce a smooth finish.

Question 8

Toolroom lathe

Answer 8

similar to engine lathe; wide range of speeds and feeds; built for higher accuracy fabricating tools and high precision devices.

Question 9

Speed lathe

Answer 9

simpler than engine lathe; no carriage or cross-slide assembly; cutting tool is held by operator using a rest; mainly used for wood working, metal spinning or polishing.

Question 10

Engine lathe

Answer 10

An engine lathe is a type of machinery, shaped horizontally, and it is often used to cut metal. The metal is turned, and the machine uses special cutting tools to create the desired shape.

Question 11

Chucking machines

Answer 11

machine design without tailstock for regular and irregular part shapes.

Question 12

Bar machine

Answer 12

long bar stock is fed through the headstock into position and upon completion of a cycle being indexed forward.

Question 13

Automatic bar machine (single spindle)

Answer 13

one cutting tool is used at a time on a single workpiece

Question 14

Automatic bar machine (multiple spindle)

Answer 14

multiple parts are machined simultaneously by multiple tools

Question 15

Turret lathe

Answer 15

allows multiple cutting operations by different cutting tools mounted onto a hexagon main turret which replaces the tailstock; square turret is mounted on the cross-slide.

Question 16

Vertical lath

Answer 16

for workpieces with a large diameter relative to length or heavy parts rotation is easier about its vertical axis.

Question 17

Boring

Answer 17

Enlarging an existing hole by using a single-point tool against a rotating workpiece (internal turning). Cutting tools are mounted on a boring bar to achieve the entire length of the bore.

 Boring bar must be stiff to avoid deflection and vibration.
 Performed on a lathe or special boring mills (vertical and horizontal).