Quick Answer: What Is Facing And Turning?

What is the difference between rough turning and finish turning?

A roughing operation is used to remove large amounts of material rapidly and to produce a part geometry close to the desired shape.

A finishing operation follows roughing and is used to achieve the final geometry and surface finish..

What is straight turning?

[′strāt ′tərn·iŋ] (mechanical engineering) Work turned in a lathe so that the diameter is constant over the length of the workpiece.

What is the process of knurling?

Knurling is a manufacturing process, typically conducted on a lathe, whereby a pattern of straight, angled or crossed lines is rolled into the material.

What is turning used for?

Turning is the removal of metal from the outer diameter of a rotating cylindrical workpiece. Turning is used to reduce the diameter of the workpiece, usually to a specified dimension, and to produce a smooth finish on the metal.

Which direction should a lathe turn?

Which way up do you put your lathe tool ? Cutting edge up or cutting edge down. Conventionally a lathe chuck turns anti clockwise looking from the tailstock at the chuck. This means that the tool in the tool holder will have its cutting edge face up, (at the top).

What is the difference between turning and facing?

In the turning operation, the tool generally reduces the diameter of the cylindrical workpiece, which can be done by cutting into the part for some depth and move the tool parallel to the axis of the part. While facing operation reduces the length of the piece, the tool is moved perpendicular to the axis of the part.

What is facing process?

Facing is a common machining process that involves the use of a lathe or milling machine to remove material from the end and/or shoulder of a workpiece. After the workpiece is placed on the machine, a cutting tool is pressed against it at the end or shoulder.

What is rough turning?

[′rəf ′tərn·iŋ] (mechanical engineering) The removal of excess stock from a workpiece as rapidly and efficiently as possible.

What are turns in ballet called?

Pirouette (peer o wet) – a rotation or spin – a complete turn of the body on one foot, on point or demi-pointe (half- pointe).

What is an Alisicone?

Pirouette a la seconde is a classical ballet term meaning a “spin with leg to the side” or “spin with leg in second position.” A dancing performing a pirouette a la seconde will be turning on their supporting leg with their other leg to the side and straight with a pointed foot.

What is face turning?

Metal turning is a process for cutting rotary surfaces. It is usually done using a single-blade tool. The face lathe (facing operations) is used for machining external parts of metal pieces with increased demands for appearance or safety. …

Why is facing needed?

Facing on a milling machine is the process of cutting a flat surface perpendicular to the axes of the milling cutter. … To obtain a smoother surface finish it is best to let the machine feed the table. Newer manual milling machines and CNC machines will have this option, but older milling machines will not.

How many types of turns are there?

The main objective of turning is to reduce the workpiece diameter to the desired dimension. There are two types of turning operations, rough and finish.

What is a facing tool?

Facing is a turning operation in which the workpiece is machined to its center. It involves moving the cutting tool perpendicular to the workpiece’s axis of rotation. … The closer a cutting tool is to the center of a workpiece, the lower the cutting speed. It approaches zero at the center of a workpiece.

What is the necessary condition for turning?

What is the necessary condition for turning? a) material of work piece should be harder than the cutting tool. b) cutting tool should be harder than the material of work piece. c) hardness of the cutting tool and material of of piece should be same.

What is shoulder turning?

Turning to a Shoulder When turning more than one diameter on a workpiece. The change in diameter or step, is known as shoulder.

What is the process of reaming?

Reaming is a process which slightly enlarges a pre-existing hole to a tightly toleranced diameter. A reamer is similar to a mill bit in that it has several cutting edges arranged around a central shaft, as shown below.