A coupling is a device used to connect two shafts together to transmit power while allowing for some misalignment. There are two main types of couplings: rigid couplings, which do not allow for disconnection or misalignment, and flexible couplings, which can accommodate misalignment between shafts. Flexible couplings function by transmitting power between shafts while allowing for various types of misalignment, including angular, offset, and axial misalignment. Examples of flexible couplings include flanged pin bush couplings, elastomeric couplings, gear tooth couplings, and Oldham couplings.
Unit 5- balancing of reciprocating masses, Dynamics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
Unit 5- balancing of reciprocating masses, Dynamics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
Unit 6- spur gears, Kinematics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
Unit 8-cams, Kinematics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
Unit 7-gear trains, Kinematics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
This presentation gives the information about Screw thread measurements and Gear measurement of the subject: Mechanical measurement and Metrology (10ME32/42) of VTU Syllabus covering unit-4.
Introduction to brakes and its classificationNavroz Navodia
This presentation contains a brief introduction to brake and its principle.Along with that it contains a detailed classification of all the brakes which are as follows
1 mechanical brakes
2 hydraulic brakes
3 disc brakes
4 pneumatic brakes
As this presentation mainly focuses on mechanical brakes hence subtype of following brake are also discussed.they are
1 SINGLE SHOE AND DOUBLE SHOE BRAKE
2 DIFFERENTIAL BRAKE
3 INTERNAL EXPANDING BRAKES
4 PIVOTED SHOE BRAKE
5 BAND BRAKES
Unit 6- spur gears, Kinematics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
Unit 8-cams, Kinematics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
Unit 7-gear trains, Kinematics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
This presentation gives the information about Screw thread measurements and Gear measurement of the subject: Mechanical measurement and Metrology (10ME32/42) of VTU Syllabus covering unit-4.
Introduction to brakes and its classificationNavroz Navodia
This presentation contains a brief introduction to brake and its principle.Along with that it contains a detailed classification of all the brakes which are as follows
1 mechanical brakes
2 hydraulic brakes
3 disc brakes
4 pneumatic brakes
As this presentation mainly focuses on mechanical brakes hence subtype of following brake are also discussed.they are
1 SINGLE SHOE AND DOUBLE SHOE BRAKE
2 DIFFERENTIAL BRAKE
3 INTERNAL EXPANDING BRAKES
4 PIVOTED SHOE BRAKE
5 BAND BRAKES
Presentation on coupling prepared by Engr. Usman Ghani.
The presentation is made to foucs on very basics of coupling, even people from non engineering fields can also get an introductory idea from this presentation.
If you like this ppt and if you want me to make presentations on other important topics. please let me know.
[Note: This is a partial preview. To download this presentation, visit:
https://www.oeconsulting.com.sg/training-presentations]
Sustainability has become an increasingly critical topic as the world recognizes the need to protect our planet and its resources for future generations. Sustainability means meeting our current needs without compromising the ability of future generations to meet theirs. It involves long-term planning and consideration of the consequences of our actions. The goal is to create strategies that ensure the long-term viability of People, Planet, and Profit.
Leading companies such as Nike, Toyota, and Siemens are prioritizing sustainable innovation in their business models, setting an example for others to follow. In this Sustainability training presentation, you will learn key concepts, principles, and practices of sustainability applicable across industries. This training aims to create awareness and educate employees, senior executives, consultants, and other key stakeholders, including investors, policymakers, and supply chain partners, on the importance and implementation of sustainability.
LEARNING OBJECTIVES
1. Develop a comprehensive understanding of the fundamental principles and concepts that form the foundation of sustainability within corporate environments.
2. Explore the sustainability implementation model, focusing on effective measures and reporting strategies to track and communicate sustainability efforts.
3. Identify and define best practices and critical success factors essential for achieving sustainability goals within organizations.
CONTENTS
1. Introduction and Key Concepts of Sustainability
2. Principles and Practices of Sustainability
3. Measures and Reporting in Sustainability
4. Sustainability Implementation & Best Practices
To download the complete presentation, visit: https://www.oeconsulting.com.sg/training-presentations
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A Memorandum of Association (MOA) is a legal document that outlines the fundamental principles and objectives upon which a company operates. It serves as the company's charter or constitution and defines the scope of its activities. Here's a detailed note on the MOA:
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Coupling
1. 2. COUPLING:
A coupling is a device used to connect two shafts together at their ends for the purpose of
transmitting power. Couplings do not normally allow disconnection of shafts during operation,
however there are torque limiting couplings which can slip or disconnect when some torque limit
is exceeded.
2.1 PURPOSE OF COUPLING:
The primary purpose of couplings is to join two pieces of rotating equipment while
permitting some degree of misalignment or end movement or both. By careful selection,
installation and maintenance of couplings, substantial savings can be made in reduced
maintenance costs and downtime.
2.2 TYPES OF COUPLING:
Rigid Couplings
Flexible Or Compensating Couplings
2.2.1 RIGID COUPLING:
A rigid coupling is a unit of hardware used to join two shafts within a motor or
mechanical system. It may be used to connect two separate systems, such as a motor and a
generator, or to repair a connection within a single system. A rigid coupling may also be added
between shafts to reduce shock and wear at the point where the shafts meet.
2.2.2 FLEXIBLE COUPLING:
.
Flexible couplings are used to transmit torque from one shaft to another when the two
shafts are slightly misaligned. Flexible couplings can accommodate varying degrees of
misalignment up to 3° and some parallel misalignment. In addition, they can also be used for
vibration damping or noise reduction.
Fig 2.1
2. The aim of the flexible coupling is to transfer motion between two shafts on the same axis whilst
accounting for possible misalignments.
2.2.2a FUNCTIONS OF FLEXIBLE COUPLING:
The two basic functions of flexible coupling are,
To transmit power.
To accommodate misalignment.
TRANSMIT POWER
Couplings are used primarily transfer mechanical power from one machine to another so that
useful work can be done. To the coupling, the power is in the form of mechanical torque at
operating speed, or work per unit of time, so the coupling is being “twisted” as it is spin at some
high rpm. Torque is transferred into and out of the coupling at the equipment connection, usually
by shaft fits or flange fits.
MISALIGNMENT:
There are three types of misalignment and which the coupling must accommodate: angular,
offset and axial. This is commonly caused by thermal growth of the machine casing and rotors as
they change between ambient and operating temperatures.
Angular misalignment is produced when the centre lines of the two equipment shafts the
coupling connects are not parallel and they intersect at an angle. Offset misalignment commonly
called parallel offset, is when the two shaft centerlines are parallel and they do not intersect, they
are offset by some distance. Axial misalignment is caused by changes in the axial position of the
shafts which moves the close to each other or further apart.
2.2.2b Types of Flexible Coupling:
The different types of flexible couplings are,
Flanged Pin Bush Couplings
Bibbly Coupling
Gear Tooth Coupling
Tyre couplings
Elastomeric Couplings – This consists of jaw type and S-flex couplings.
Oldham’s Coupling
Universal Coupling or Hooke’s Coupling
Bellows Coupling.
3. Flexible coupling are categorized as one of four types. They are
Mechanically flexible
Elastomeric
Flexible element
Miscellaneous
The general operating principles of the four basic categories of couplings are as follows:
Mechanically flexible couplings: in general, these couplings obtain their
flexibility from loose fitting parts and /or rolling or sliding of mating parts.
Elastomeric couplings: In general, these couplings obtain their flexibility from
stretching or compressing a resilient material. Some sliding or rolling may takes
place, but it is usually minimal.
Flexible element couplings: In general, the flexibility of these coupling is
obtained from the flexing of thin discs or diaphragms.
Miscellaneous couplings: These couplings obtain their flexibility from a
combination of the mechanisms described above or through a unique mechanism.
2.2.2c BEAM COUPLING:
A beam coupling, also known as helical coupling, is a flexible coupling for
transmitting torque between two shafts while allowing for angular misalignment, parallel offset
and even axial motion, of one shaft relative to the other. This design utilizes a single piece of
material and becomes flexible by removal of material along a spiral path resulting in a curved
flexible beam of helical shape.
Fig 2.2
Increasing number of coils allows for greater angular misalignment
2.2.2d GEAR COUPLING:
A gear coupling is a mechanical device for transmitting torque between two
shafts that are not collinear. It consists of a flexible joint fixed to each shaft. The two joints are
connected by a third shaft, called the spindle. Each joint consists of a 1:1 gear
ratio internal/external gear pair. The tooth flanks and outer diameter of the external gear are
4. crowned to allow for angular displacement between the two gears. Mechanically, the gears are
equivalent to rotating splines with modified profiles. They are called gears because of the
relatively large size of the teeth.
Fig 2.3
2.2.2d OLDHAM:
An Oldham coupling has three discs, one coupled to the input, one coupled to
the output, and a middle disc that is joined to the first two by tongue and groove. The tongue and
groove on one side is perpendicular to the tongue and groove on the other. The middle disc
rotates around its center at the same speed as the input and output shafts. Its center traces a
circular orbit, twice per rotation, around the midpoint between input and output shafts.
Fig 2.4a Oldham coupler, assembled
Fig 2.4b Oldham coupler, disassembled