Manufacturing Processes [Machining
and Tolerances]
Straight Turning ANS:Produces a straight cylindrical surface. Single point tool is fed parallel to the axis of
rotation.
Taper Turning ANS:Produces conical shape. Single point tool is fed at an angle to the axis of rotation.
Profiling ANS:Produces a curved surface. Single point is fed into the workpiece in both the perpendicular
and parallel to the axis of rotation simultaneously OR the single point tool mounted on as swiveling is
rotated in the required radius.
Facing ANS:Produces a flat surface that is either the whole end surface of the workpiece or an annular
intermediate surface like a shoulder. Single point tool is fed at 90 degrees to the axis of rotation.
Form Turning ANS:Produces shape of the form tool. Form tool is fed at 90 degrees to the axis of
rotation.
Parting or Cutting Off ANS:Separates a part from a workpiece. It is necessary when parts are produced
from a long continuous bar. Special tool called "cutoff tool" or "parting tool" is used.
Drilling ANS:Produces an axial hole in the workpiece. Drilling tool is held in the tailstock. Types of drills
include chisel-point (more accurate) and crankshaft (good for deep holes).
Boring ANS:Enlarges a hole made by previous process (drilling) or in a tubular work piece produces
internal grooves. Boring bar is usually mounted on the tool holder.
Threading ANS:Produces both external and internal threads on a workpiece. Threading cutting tool is fed
parallel to the axis of rotation at a constant feed equal to the pitch of the thread being cut.
Knurling ANS:Produces a rough cylindrical (or conical) surface. Knurling tool is fed parallel to the axis of
rotation.
Face Grooving ANS:
Turning and External Grooving ANS:
What are five common methods of supporting work pieces in a lathe? ANS:1. Held between centers
2. Held in a chuck
3. Held in a collet
4. Mounted on a face plate
and Tolerances]
Straight Turning ANS:Produces a straight cylindrical surface. Single point tool is fed parallel to the axis of
rotation.
Taper Turning ANS:Produces conical shape. Single point tool is fed at an angle to the axis of rotation.
Profiling ANS:Produces a curved surface. Single point is fed into the workpiece in both the perpendicular
and parallel to the axis of rotation simultaneously OR the single point tool mounted on as swiveling is
rotated in the required radius.
Facing ANS:Produces a flat surface that is either the whole end surface of the workpiece or an annular
intermediate surface like a shoulder. Single point tool is fed at 90 degrees to the axis of rotation.
Form Turning ANS:Produces shape of the form tool. Form tool is fed at 90 degrees to the axis of
rotation.
Parting or Cutting Off ANS:Separates a part from a workpiece. It is necessary when parts are produced
from a long continuous bar. Special tool called "cutoff tool" or "parting tool" is used.
Drilling ANS:Produces an axial hole in the workpiece. Drilling tool is held in the tailstock. Types of drills
include chisel-point (more accurate) and crankshaft (good for deep holes).
Boring ANS:Enlarges a hole made by previous process (drilling) or in a tubular work piece produces
internal grooves. Boring bar is usually mounted on the tool holder.
Threading ANS:Produces both external and internal threads on a workpiece. Threading cutting tool is fed
parallel to the axis of rotation at a constant feed equal to the pitch of the thread being cut.
Knurling ANS:Produces a rough cylindrical (or conical) surface. Knurling tool is fed parallel to the axis of
rotation.
Face Grooving ANS:
Turning and External Grooving ANS:
What are five common methods of supporting work pieces in a lathe? ANS:1. Held between centers
2. Held in a chuck
3. Held in a collet
4. Mounted on a face plate
