This document provides an overview of various machining processes including turning, drilling, and milling. It describes the key operations for each process and common machine tools used. Turning operations like facing and threading are performed on lathes. Drilling and related operations like reaming and tapping are usually done on drill presses. Milling can be classified as peripheral or face milling and is commonly done on knee-and-column or bed type milling machines. The document outlines the basic mechanics and applications of various machining techniques.
Fundamentals of Metal cutting and Machining Processes
MACHINING OPERATIONS AND MACHINING TOOLS
Turning and Related Operations
Drilling and Related Operations
Milling
Machining Centers and Turning Centers
Other Machining Operations
High Speed Machining
Fundamentals of Metal cutting and Machining Processes
MACHINING OPERATIONS AND MACHINING TOOLS
Turning and Related Operations
Drilling and Related Operations
Milling
Machining Centers and Turning Centers
Other Machining Operations
High Speed Machining
A tool that has a single point for cutting purpose is called single point cutting tool. It is generally used in the lathe machine, shaper machine etc. It is used to remove the materials from the workpiece.
Mechanics of chip formation, single point cutting tool, forces in machining, Types of chip, cutting
tools– nomenclature, orthogonal metal cutting, thermal aspects, cutting tool materials, tool wear,
tool life, surface finish, cutting fluids and Machinability
Unit 2 Machinability, Cutting Fluids, Tool Life & Wear, Tool MaterialsMechbytes
Concept of machinability, machinability index, factors affecting machinability
Different mechanism of tool wear types of tool wear (crater, flank etc.), Measurement and control of tool wear
Concept of tool life, Taylor's tool life equation (including modified version)
Different tool materials and their applications including effect of tool coating
Introduction to economics of machining
Cutting fluids: types, properties, selection and application methods
A tool that has a single point for cutting purpose is called single point cutting tool. It is generally used in the lathe machine, shaper machine etc. It is used to remove the materials from the workpiece.
Mechanics of chip formation, single point cutting tool, forces in machining, Types of chip, cutting
tools– nomenclature, orthogonal metal cutting, thermal aspects, cutting tool materials, tool wear,
tool life, surface finish, cutting fluids and Machinability
Unit 2 Machinability, Cutting Fluids, Tool Life & Wear, Tool MaterialsMechbytes
Concept of machinability, machinability index, factors affecting machinability
Different mechanism of tool wear types of tool wear (crater, flank etc.), Measurement and control of tool wear
Concept of tool life, Taylor's tool life equation (including modified version)
Different tool materials and their applications including effect of tool coating
Introduction to economics of machining
Cutting fluids: types, properties, selection and application methods
in this u will come to know about various processes involved in manufacturing of gears and also get the experience how to make slide show on training reports.
PPT IS IMPORTANT FOR FE PUNE UNIVERSITY STUDENTS FOR SUBJECT BME. DETAILED DESCRIPTION IS GIVEN ABOUT LATHE MACHINE, DRILLING MACHINE AND GRINDING MACHINE
Unit 3A1 Lathe turning and related operationsMechbytes
Coverage of machine tools classification, types, functions and Lathe machine, Turning & related operations, Lathe construction, parts, accessories and attachments
MACHINING OPERATIONS AND MACHINE TOOLS
Methods of Holding the Work in a Lathe (Chuck,Collet,face Plate,Holding the Work Between Centers)
Work Holding for Drill Presses
Boring Drilling, Reaming, Tapping Milling
Peripheral Milling vs. Face Milling
Shaper and Planer
Broaching
Tensile, Impact and Hardness Testing of Mild SteelGulfam Hussain
The main purpose of this report is to study the mechanical properties and
failure mode of mild steel. Three types of standard tests i.e. tensile test, impact
test, and hardness test were conducted on the standard specimens of mild steel.
From the tests, results were obtained; Tensile strength, Impact strength, and
hardness were calculated. It was observed that Tensile Strength, Impact Strength
and Hardness of MS specimen were 1450.833 N/mm², 29.5 J & 59.25 HRB.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
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Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
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Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
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• Indigenized local Support/presence in India.
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• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
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• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
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It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
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AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
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Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
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Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
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Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
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(C) 2024 Robbie E. Sayers
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2. Outline
1- Introduction
2-Geometry of Machined Parts
3-Turning and Related Operations
3.1-The Lathe Machine
3.2-Operations Related to Turning
3.3-Other Lathes & Turning Machines
4-Drilling & Related Operations
4.1-Operations Related to Drilling
4.2-Drill Press
5-Milling
5.1-Types of Milling Operations
5.2-Milling Machines
3. 1- Introduction
• Machining is a manufacturing process in which a
sharp cutting tool is used to cut away material to
leave the desired part shape.
• The cutting action in machining involves shear
deformation of the work material to form chips.
Removal of material could be done by three ways.
i- Conventional machining:
In this a sharp cutting tool is used to
mechanically cut the material to achieve the desired
geometry.
4. – Turning and related operations
– Drilling and related operations
– Milling
ii- Abrasive Processes:
In this material is mechanically removed by the
hard, abrasive particles.
-Grinding Operation
-Other Abrasive Processes
iii- Non Traditional Processes:
Use various energy forms other than a sharp
cutting tool or abrasive particles to remove material.
5. -Thermal Energy Process
-Chemical Machining
-Electrochemical Machining
• Machining is classified as secondary process.
• In general secondary process follow basic processes, the
purpose of basic processes is to establish the initial shape
of a work piece.
• Examples of basic processes include casting, forging and
ball rolling (to produce rod and bar stock).
• The shape produced by these processes usually require
refinement by secondary process e.g. bar stock is the
initial shape, but the final geometry after a series of
machining operations is a shaft.
6. 2-Geometry of Machined Parts
• Machined parts can be classified as rotational and
non rotational.
• A rotational work piece has a cylindrical or disk like
shape.
• In this operation a cutting tool removes material
from the rotating work piece e.g. turning.
• A non rotational work piece is block or plate like.
• In this operation material is removed by linear
motions of the work piece combined with either
rotating or linear tool motions.
7. 3-Turning and Related Operations
• Turning is a machining process in which a single-
point tool removes material from the surface of a
rotating work piece.
• The tool is fed linearly in a direction parallel to the
axis of rotation to generate a cylindrical geometry, as
illustrated in Figure below.
• Turning is traditionally carried out on a machine tool
called a lathe, which provides power to turn the part
at a given rotational speed and to feed the tool at a
specified rate and depth of cut.
9. Cutting & Rotational Speed:
• The rotational speed in turning is related to the
desired cutting speed at the surface of the cylindrical
work piece by the equation
N =v/πDo
• where N = rotational speed, rev/min;
v= cutting speed, m/min (ft/min);
Do=original diameter of the part, m (ft).
10. 3.1-The Lathe Machine
• Engine Lathe Technology Figure below is a sketch of
an engine lathe showing its principal components.
• The headstock contains the drive unit to rotate the
spindle, which rotates the work.
• Opposite the headstock is the tailstock, in which a
center is mounted to support the other end of the
work piece.
• The cutting tool is held in a tool post fastened to the
cross-slide, which is assembled to the carriage.
11. • The carriage is designed to slide along the ways of
the lathe in order to feed the tool parallel to the axis
of rotation.
• The ways are built into the bed of the
lathe, providing a rigid frame for the machine tool.
13. 3.2-Operations Related to Turning
• A variety of other machining operations can be
performed on a lathe in addition to turning; these
include the following
(a) Facing. The tool is fed radially into the rotating
work on one end to create a flat surface on the end.
14. (b) Taper Turning. Instead of feeding the tool parallel
to the axis of rotation of the work, the tool is fed at
an angle, thus creating a tapered cylinder or conical
shape.
15. (c) Contour Turning. Instead of feeding the tool along
a straight line parallel to the axis of rotation as in
turning, the tool follows a contour that is other than
straight, thus creating a contoured form in the
turned part.
16. (d) Form Turning. In this operation, sometimes called
forming, the tool has a shape that is imparted to the
work by plunging the tool radially into the work.
17. (e) Chamfering. The cutting edge of the tool is used
to cut an angle on the corner of the cylinder, forming
what is called a ‘‘chamfer.’’
18. (f) Cutoff. The tool is fed radially into the rotating
work at some location along its length to cut off the
end of the part. This operation is sometimes referred
to as parting.
19. (g) Threading. A pointed tool is fed linearly across
the outside surface of the rotating work part in a
direction parallel to the axis of rotation at a large
effective feed rate, thus creating threads in the
cylinder.
20. (h) Boring. A single-point tool is fed linearly, parallel
to the axis of rotation, on the inside diameter of an
existing hole in the part.
21. (i) Drilling. Drilling can be performed on a lathe by
feeding the drill into the rotating work along its axis.
Reaming can be performed in a similar way.
22. (j) Knurling. This is not a machining operation
because it does not involve cutting of material.
Instead, it is a metal forming operation used to
produce a regular crosshatched pattern in the work
surface.
23. 3.3-Other Lathes & Turning Machines
The Tool-room Lathe.
• It is smaller and has a wider available range of
speeds and feeds.
• It is also built for higher accuracy, consistent with its
purpose of fabricating components for
tools, fixtures, and other high-precision devices.
The Speed Lathe.
• It is simpler in construction than the engine lathe.
• It has no carriage and cross-slide assembly, and
therefore no leadscrew to drive the carriage.
24. • The cutting tool is held by the operator using a rest
attached to the lathe for support.
• Applications of this machine type include wood
turning, metal spinning, and polishing operations.
The Turret Lathe.
• It is a manually operated lathe in which the tailstock
is replaced by a turret that holds up to six cutting
tools .These tools can be rapidly brought into action
against the work one by one by indexing the turret.
25. • Hence, because of the capacity to quickly change
from one cutting tool to the next, the turret lathe is
used for high-production work that requires a
sequence of cuts to be made on the part.
The Chucking Machine.
• As the name suggests, it uses a chuck in its spindle to
hold the work part.
• The tailstock is absent on a chucker, so parts cannot
be mounted between centers. This restricts the use
of a chucking machine to short, lightweight parts.
26.
27. The Bar Machine
• It is similar to a chucking machine except that a culet
is used.
• One of its important applications is in the production
of screws and similar small hardware items.
28. 4-Drilling & Related Operations
• Drilling is a machining operation used to create a
round hole in a work part.
• Drilling is usually performed with a rotating
cylindrical tool that has two cutting edges on its
working end, the tool is called a drill or drill bit.
• The most common drill bit is the twist drill,
• The rotating drill feeds into the stationary work part
to form a hole whose diameter is equal to the drill
diameter.
• Drilling is customarily performed on a drill press.
30. 4.1-Operations Related to Drilling
• Most of the operations follow drilling; a hole must be
made first by drilling, and then the hole is modified
by one of the other operations.
31. (a) Reaming.
• Reaming is used to slightly enlarge a hole, to provide
a better tolerance on its diameter, and to improve its
surface finish. The tool is called a reamer, and it
usually has straight flutes.
32. (b) Tapping.
• This operation is performed by a tap and is used to
provide internal screw threads on an existing hole.
33. (c) Counter-boring.
• Counter-boring provides a stepped hole, in which a
larger diameter follows a smaller diameter partially
into the hole. A counter-bored hole is used to seat
bolt heads into a hole so the heads do not protrude
above the surface.
34. (d) Countersinking.
• This is similar to counter-boring, except that the step
in the hole is cone-shaped for flat head screws and
bolts.
35. 4.2-Drill Press
• The standard machine tool for drilling is the drill
press.
• There are various types of drill press, the most basic
of which is the upright drill, bench drill, gang drill and
radial drill.
• The upright drill stands on the floor and consists of a
table for holding the work part, a drilling head with
powered spindle for the drill bit, and a base and
column for support.
• A similar drill press, but smaller, is the bench
drill, which is mounted on a table or bench rather
than the floor.
38. • The gang drill is a drill press consisting basically of
two to six upright drills connected together in an in-
line arrangement.
• Each spindle is powered and operated
independently, and they share a common
worktable, so that a series of drilling and related
operations can be accomplished in sequence
(e.g., centering, drilling, reaming, tapping)
40. • The radial drill is a large drill press designed to cut
holes in large parts.
• It has a radial arm along which the drilling head can
be moved and clamped.
• The head therefore can be positioned along the arm
at locations that are a significant distance from the
column to accommodate large work.
• The radial arm can also be swiveled about the
column to drill parts on either side of the worktable.
42. 5-Milling
• Milling is a machining operation in which a work part
is fed past a rotating cylindrical tool with multiple
cutting edges, (In rare cases, a tool with one cutting
edge, called a fly-cutter, is used).
• The axis of rotation of the cutting tool is
perpendicular to the direction of feed.
• This orientation between the tool axis and the feed is
one of the features that distinguishes milling from
drilling.
43. • In drilling, the cutting tool is fed in a direction parallel
to its axis of rotation.
• The cutting tool in milling is a milling cutter and the
cutting edges are called teeth.
44. 5.1-Types of Milling Operations
• There are two basic types of milling operations.
1- Peripheral Milling:
• In peripheral milling, also called plain milling, the axis
of the tool is parallel to the surface being machined,
and the operation is performed by cutting edges on
the outside periphery of the cutter.
• In peripheral milling, the direction of cutter rotation
distinguishes two forms of milling: up milling and
down milling.
46. • In up milling, also called conventional milling, the
direction of motion of the cutter teeth is opposite
the feed direction when the teeth cut into the work.
It is milling ‘‘against the feed.’’
47. • In down milling, also called climb milling, the
direction of cutter motion is the same as the feed
direction when the teeth cut the work. It is milling
‘‘with the feed.
49. 2-Face Milling:
• In face milling, the axis of the cutter is perpendicular
to the surface being milled, and machining is
performed by cutting edges on both the end and
outside periphery of the cutter.
50. 5.2-Milling Machines
• Milling machines can be classified as horizontal or
vertical.
• A horizontal milling machine has a horizontal
spindle, and this design is well suited for performing
peripheral milling on work parts that are roughly
cube shaped.
• A vertical milling machine has a vertical spindle, and
this orientation is appropriate for face milling, on
relatively flat work parts.
51. • Other than spindle orientation, milling machines can
be classified into the following types:
(1) Knee-and-Column Type
(2) Bed Type
(3) Planer Type
52. • The knee-and-column milling machine is the basic
machine tool for milling.
• It derives its name from the fact that its two main
components are a column that supports the spindle,
and a knee (roughly resembling a human knee) that
supports the worktable.
• It is available as either a horizontal or a vertical
machine.
• In the horizontal version, an arbor usually supports the
cutter.
• The arbor is basically a shaft that holds the milling
cutter and is driven by the spindle.
54. • Bed-type milling machines are designed for high
production.
• They are constructed with greater rigidity than knee-
and-column machines, thus permitting them to
achieve heavier feed rates and depths of cut needed
for high material removal rates.
• The characteristic construction of the bed-type
milling machine is shown in Figure
56. • Planer type mills are the largest milling machines.
• Their general appearance and construction are those
of a large planer.
• The difference is that milling is performed instead of
planing.
• Planer mills are built to machine very large parts.
• The worktable and bed of the machine are heavy and
relatively low to the ground, and the milling heads
are supported by a bridge structure that spans across
the table.