Whole lathe machine in brief which any one can understand easily and quickly.
A Perfect ppt to get knowledge about lathe machine, its parts, operations etc.
This presentation provides an insight to the topic of milling machines and its basics. It will be of great help for the beginners who would be trying to grasp the concepts related to this topic.
Producing hole is one of the most common machining operation on a machining center.
Machining center have many hole making cycles such as Spot Drilling, Reaming, Deep Hole drilling, Peck drilling etc.
in this Ppt all canned cycle are explained i;e G70 G71 G72 G73 G75 G76 G81
MILLING – Cutting parameters, machine time calculation
Milling operation – Plain milling, side & face milling, form milling, gang milling, end milling, face milling, T slot milling, slitting
GEAR CUTTING – Gear cutting on milling machine – dividing head and indexing method, gear hobbing, principle of operation, advantages & limitation, hobbing tech, gear shaping, gear finishing process
Whole lathe machine in brief which any one can understand easily and quickly.
A Perfect ppt to get knowledge about lathe machine, its parts, operations etc.
This presentation provides an insight to the topic of milling machines and its basics. It will be of great help for the beginners who would be trying to grasp the concepts related to this topic.
Producing hole is one of the most common machining operation on a machining center.
Machining center have many hole making cycles such as Spot Drilling, Reaming, Deep Hole drilling, Peck drilling etc.
in this Ppt all canned cycle are explained i;e G70 G71 G72 G73 G75 G76 G81
MILLING – Cutting parameters, machine time calculation
Milling operation – Plain milling, side & face milling, form milling, gang milling, end milling, face milling, T slot milling, slitting
GEAR CUTTING – Gear cutting on milling machine – dividing head and indexing method, gear hobbing, principle of operation, advantages & limitation, hobbing tech, gear shaping, gear finishing process
The given presentation consists of introduction to lathe machines, working principles, classification, constructions, accessories, lathe operations, work holding devices, etc
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
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.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
2. Learning Objectives
The
students
shall be
able to
understand
the
following
Define a lathe
Explain the construction of lathe
Describe the types of lathe machine
Explain the operations of lathe
machine
8. i) History
The origin of turning
dates to around
1300BC when the
Egyptians first
developed a twoperson lathe. One
person would turn the
wood work piece with
a rope while the other
used a sharp tool to
cut shapes in the wood
The Romans improved
the Egyptian design
with the addition of a
turning bow. Early
bow lathes were also
developed and used in
Germany, France and
Britain.
10. Tailstock center
(Dead Centre)
Headstock center
(Live Centre)
Working Principle
Workpiece
Tool post
Workpiece
N (rev/min)
Chip
Tool
D
S
peripheral
speed (m/min)
10
11. Size of lathe
Depends upon following points
Main points
Swing
(maximum diameter of job that can swing on it without touching bed ways )
Distance between centre’s of lathe
16. Bench Lathe
A bench top model usually of low
power
used to make precision machine
small work pieces
17. Tool room lathe
•
•
•
•
Look like engine lathe
Greater accuracy
More versatility
Wider range of speeds and feeds
18. Turret
Capable of performing multiple
cutting operations on the
same workpiece
Turning
Boring
Drilling
Thread cutting
Facing
Turret lathes are very versatile
Types of turret lathes
Ram-type: ram slides
in a separate base on
the saddle
Saddle type:
more heavily
constructed
Used to machine
large
workpeiceces
•
•
•
•
•
It is production lathe
Hex turret replaces tailstock
Multiple tools set to machine part Turret Head
High production rates
Still may require some operator skill
19. Capstan lathe
• It is production lathe
• Used for light duty work pieces
• Small in size as compared to
turret lathe
• It also have turret that replaces
tailstock
• Multiple tools set to machine part
• Still may require some operator
skill
Turret Head
20. Tracer/copy lathe
Tracer piece
• Hydraulic attachment used to copy the shape of a part from a master.
• lathe that has the ability to follow a template to copy a shape or
contour.
• Machine tools with attachments
• Capable of turning parts with various contours
• A tracer finger follows the template and guides the cutting tool
21. Automatic lathe
An automatic lathe is a lathe
(usually a metalworking lathe)
whose actions are controlled
automatically. Although all
electronically controlled (CNC)
lathes are automatic, they are
usually not called by that name, as
explained under "General
nomenclature". The first kinds of
automatic lathes were mechanically
automated ones
22. CNC lathe
• Computer controlled
• Wide variety of process
capability
• multiple axis
• Indexing and contouring
head
• On- line and off- line
programming available
• Computer Numerical
Controls (CNC)
• Equipped with one or
more turrets
• Each turret is equipped
with a variety of tools
• Performs several
operations on different
surfaces of the work piece
Machine Unit
NC controller
26. Lathe Operations
Turning: produce straight, conical, curved, or grooved work
pieces
Facing: to produce a flat surface at the end of the part or for
making face grooves.
Boring: to enlarge a hole or cylindrical cavity made by a
previous process or to produce circular internal grooves.
Drilling: to produce a hole by fixing a drill in the tailstock
Threading: to produce external or internal threads
Knurling: to produce a regularly shaped roughness on
cylindrical surfaces
26
37. Drilling
Drill – cutting tool – held in TS – feed from TS
Quill
clamp moving
Drill
quill
Tail stock
Feed
Tail stock clamp
38. Contour Turning
Instead of feeding the
tool parallel to the axis of
rotation, tool follows a
contour that is not
necessarily straight (thus
creating a contoured
form).
Figure ..contour turning
39. Threading
Pointed form tool is
fed linearly across
surface of rotating
workpart parallel to
axis of rotation at a
large feed rate, thus
creating threads
Figure; threading
41. Feed back/Evaluation
1.
Lathe is used to turn
i)
Square shape ii) cylindrical shape iii) irregular shape
2 Size of lathe depends upon following
i) Size of chuck and length of bed
ii) Distance b/w centres and length of bed
iii) Its weight & length of bed
iv) distance b/w centres & swing diameter of job to be held
3. What are the basic difference b/w turret lathe and
capstan lathe
i) Size
ii) precision
iii) by turret head position iv) i,iii