check it out: http://goo.gl/vqNk7m
CADmantra Technologies pvt. Ltd. is a CAD Training institute specilized in producing quality and high standard education and training. We are providing a perfact institute for the students intersted in CAD courses CADmantra is established by a group of engineers to devlop good training system in the field of CAD/CAM/CAE, these courses are widely accepted worldwide.
#catiatraining
#ANSYS #CRE-O
#hypermesh
#Automobileworkshops
#enginedevelopment
#autocad
#sketching
Surface roughness metrology deals with basic terminology of surface,surface roughness indication methods,analysis of surface traces, measurement methods,surface roughness measuring instruments such as Stylus Probe Instrument, Profilometer, Tomlinson Surface Meter ,The Taylor-Hobson Talysurf etc.This is very useful for diploma,degree engineering students of mechanical,production,automobile branch
Surface roughness metrology deals with basic terminology of surface,surface roughness indication methods,analysis of surface traces, measurement methods,surface roughness measuring instruments such as Stylus Probe Instrument, Profilometer, Tomlinson Surface Meter ,The Taylor-Hobson Talysurf etc.This is very useful for diploma,degree engineering students of mechanical,production,automobile branch
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.
Download link: https://www.researchgate.net/publication/318852873_Engineering_Drawing_-_I
DOI: 10.13140/RG.2.2.22512.56328
An engineering drawing is a type of technical drawing, used to fully and clearly define requirements for engineered items, and is usually created in accordance with standardized conventions for layout, nomenclature, interpretation, appearance size, etc.
Its purpose is to accurately and unambiguously capture all the geometric features of a product or a component. The end goal of an engineering drawing is to convey all the required information that will allow a manufacturer to produce that component.
Introduction to Mechanical Measurements and Metrology taruian
Introduction to Metrology: Definition, objectives of metrology, Material Standards, Wavelength Standards, Classification of standards, Line and End standards, Calibration of End bars. Numerical examples.
education is a key for everything so the objective of this slide is to share knowledge to the glob in my area of specialization.
This lecture note is basically designed for mechanical Engineering Manufacturing stream students and Instructors.
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
This PPT discuss the 14 geometric symbols used in GD&T classified under five controls. Only important points are mentioned. Kindly mention, if any other important points are missed out. The sources of the content (including pics) are from various sites which details GD&T. The PPT with modifiers and additional symbols (in detail) will be updated soon.
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.
Download link: https://www.researchgate.net/publication/318852873_Engineering_Drawing_-_I
DOI: 10.13140/RG.2.2.22512.56328
An engineering drawing is a type of technical drawing, used to fully and clearly define requirements for engineered items, and is usually created in accordance with standardized conventions for layout, nomenclature, interpretation, appearance size, etc.
Its purpose is to accurately and unambiguously capture all the geometric features of a product or a component. The end goal of an engineering drawing is to convey all the required information that will allow a manufacturer to produce that component.
Introduction to Mechanical Measurements and Metrology taruian
Introduction to Metrology: Definition, objectives of metrology, Material Standards, Wavelength Standards, Classification of standards, Line and End standards, Calibration of End bars. Numerical examples.
education is a key for everything so the objective of this slide is to share knowledge to the glob in my area of specialization.
This lecture note is basically designed for mechanical Engineering Manufacturing stream students and Instructors.
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
This PPT discuss the 14 geometric symbols used in GD&T classified under five controls. Only important points are mentioned. Kindly mention, if any other important points are missed out. The sources of the content (including pics) are from various sites which details GD&T. The PPT with modifiers and additional symbols (in detail) will be updated soon.
This document is an Instruction manual for Computer aided machine drawing
Subject: Computer aided machine drawing (CAMD)
Syllabus contest is as per VTU, Belagavi, India.
Notes Compiled By: Hareesha N Gowda, Assistant Professor, DSCE, Bengaluru-78.
Introduction to Manufacturing Processes and their Applications (Casting, Forging, Sheet metal working and Metal joining processes), Description of Casting process: Sand casting(Cope&Drag). Sheet metal Forming,(shearing, bending, drawing), Forging (Hot working and cold working comparison) ,Electric Arc welding, Comparison of Welding, Soldering, Brazing
Assembly of Machine vice, Computer Aided Machine Drawing (CAMD) 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.
A quiz for students pursuing designing, engineering, engineering graphics, B.tech, Mechanical engineering to probe their knowledge in this exciting quiz. It contains two rounds one for jumbled words and other for orthographic projection or graphics design. A great PPT (presentation) for college events, design events and other competitions. Go check your designer's aptitude.
This is my design portfolio and it is my hope that this will allow you to better assess how my skills can be applied to your company.
I would be happy to talk in more detail and can be reached on Email:ibrahim_dilawer@yahoo.com or phone:+44(0)755-027-9908
Detail drawings completely describe a single part with multiview orthographic projections.
Should provide all the information necessary to economically manufacture a high quality part.
check it out: http://goo.gl/vqNk7m
CADmantra Technologies pvt. Ltd. is a CAD Training institute specilized in producing quality and high standard education and training. We are providing a perfact institute for the students intersted in CAD courses CADmantra is established by a group of engineers to devlop good training system in the field of CAD/CAM/CAE, these courses are widely accepted worldwide.
#catiatraining
#ANSYS #CRE-O
#hypermesh
#Automobileworkshops
#enginedevelopment
#autocad
#sketching
check it out: http://goo.gl/vqNk7m
CADmantra Technologies pvt. Ltd. is a CAD Training institute specilized in producing quality and high standard education and training. We are providing a perfact institute for the students intersted in CAD courses CADmantra is established by a group of engineers to devlop good training system in the field of CAD/CAM/CAE, these courses are widely accepted worldwide.
#catiatraining
#ANSYS #CRE-O
#hypermesh
#Automobileworkshops
#enginedevelopment
#autocad
#sketching
CADmantra Technologies pvt. Ltd. is a CAD Training institute specilized in producing quality and high standard education and training. We are providing a perfact institute for the students intersted in CAD courses CADmantra is established by a group of engineers to devlop good training system in the field of CAD/CAM/CAE, these courses are widely accepted worldwide.
#catiatraining
#ANSYS #CRE-O
#hypermesh
#Automobileworkshops
#enginedevelopment
#autocad
#sketching
check it out: http://goo.gl/vqNk7m
CADmantra Technologies pvt. Ltd. is a CAD Training institute specilized in producing quality and high standard education and training. We are providing a perfact institute for the students intersted in CAD courses CADmantra is established by a group of engineers to devlop good training system in the field of CAD/CAM/CAE, these courses are widely accepted worldwide.
#catiatraining
#ANSYS #CRE-O
#hypermesh
#Automobileworkshops
#enginedevelopment
#autocad
#sketching
check it out: http://goo.gl/vqNk7m
CADmantra Technologies pvt. Ltd. is a CAD Training institute specilized in producing quality and high standard education and training. We are providing a perfact institute for the students intersted in CAD courses CADmantra is established by a group of engineers to devlop good training system in the field of CAD/CAM/CAE, these courses are widely accepted worldwide.
#catiatraining
#ANSYS #CRE-O
#hypermesh
#Automobileworkshops
#enginedevelopment
#autocad
#sketching
3D Scanning and Digitizing
Exascan.is The High Resolution Scanner From The Handyscan 3d Line
Of Truly Portable, Self Positioning Handheld Laser Scanners By
Creaform.
Examines Every Details
The Exascan Selfpositioning Handheld Scanner Offers Increased
Resolution And Accuracy.
Exact 3d Representation
The Exascan Makes It Possible To Carry Out Exact 3d Scanning
Projects With A Level Of Detail And Accuracy That No Other Handheld
Scanning System Can Achieve.
The Exascan Is Definitely The Most Flexible, Free form Inspection
Device On The Market.applications And Solutions.
Reverse Engineering & Styling, Design & Analysis
Get Best Quote 1. Include 3D scanning of existing objects
2. 3D archiving
3. Complex shape acquisition
4. Damage assessment
5. Clay model digitizing
6. Facilitates surface reconstruction
7. Class A surfacing
8. 3D modelling
9. Mockups
10. Packaging design
11. Rapid prototyping.
12. Mechanical design (tooling & jigs, maintenance, repair &
overhaul)
Inspection
1. Noncontact inspection
2. First article inspection
3. Supplier quality inspection
4. ParttoCAD inspection (2D INSPECTION)
5. Conformity assessment of 3D models against the original
parts/production tooling
6. Conformity assessment of manufactured parts against originals
Seismic behavior of rc elevated water tankunder different types of staging pa...CADmantra Technologies
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
CADmantra Technologies Pvt. Ltd. is one of the best Cad training company in northern zone in India . which are provided many types of courses in cad field i.e AUTOCAD,SOLIDWORK,CATIA,CRE-O,Uniraphics-NX, CNC, REVIT, STAAD.Pro. And many courses
Contact: www.cadmantra.com
www.cadmantra.blogspot.com
www.cadmantra.wix.com
Book Formatting: Quality Control Checks for DesignersConfidence Ago
This presentation was made to help designers who work in publishing houses or format books for printing ensure quality.
Quality control is vital to every industry. This is why every department in a company need create a method they use in ensuring quality. This, perhaps, will not only improve the quality of products and bring errors to the barest minimum, but take it to a near perfect finish.
It is beyond a moot point that a good book will somewhat be judged by its cover, but the content of the book remains king. No matter how beautiful the cover, if the quality of writing or presentation is off, that will be a reason for readers not to come back to the book or recommend it.
So, this presentation points designers to some important things that may be missed by an editor that they could eventually discover and call the attention of the editor.
Top 5 Indian Style Modular Kitchen DesignsFinzo Kitchens
Get the perfect modular kitchen in Gurgaon at Finzo! We offer high-quality, custom-designed kitchens at the best prices. Wardrobes and home & office furniture are also available. Free consultation! Best Quality Luxury Modular kitchen in Gurgaon available at best price. All types of Modular Kitchens are available U Shaped Modular kitchens, L Shaped Modular Kitchen, G Shaped Modular Kitchens, Inline Modular Kitchens and Italian Modular Kitchen.
You could be a professional graphic designer and still make mistakes. There is always the possibility of human error. On the other hand if you’re not a designer, the chances of making some common graphic design mistakes are even higher. Because you don’t know what you don’t know. That’s where this blog comes in. To make your job easier and help you create better designs, we have put together a list of common graphic design mistakes that you need to avoid.
Between Filth and Fortune- Urban Cattle Foraging Realities by Devi S Nair, An...Mansi Shah
This study examines cattle rearing in urban and rural settings, focusing on milk production and consumption. By exploring a case in Ahmedabad, it highlights the challenges and processes in dairy farming across different environments, emphasising the need for sustainable practices and the essential role of milk in daily consumption.
Can AI do good? at 'offtheCanvas' India HCI preludeAlan Dix
Invited talk at 'offtheCanvas' IndiaHCI prelude, 29th June 2024.
https://www.alandix.com/academic/talks/offtheCanvas-IndiaHCI2024/
The world is being changed fundamentally by AI and we are constantly faced with newspaper headlines about its harmful effects. However, there is also the potential to both ameliorate theses harms and use the new abilities of AI to transform society for the good. Can you make the difference?
2. SYLLABUS
Section A
Introduction graphic language, classification of drawing, principle
of drawing, IS codes for machine drawing, lines, scales, section
dimensioning, standard abbreviation, – Limits , fits and Tolerance
( Dimensional and Geometrical tolerance ) , Surface finish,
Gears : Gear terminology, I.S. convention representation of
assembly of spur gears, helical gears, bevel gears , worm and
worm wheel.
Section B
Orthographic projections: principle of first and third angle
projection, orthographic views from isometric views of machine
parts / components.
Drawing of sectional views:- Coupling, Crankshaft, Pulley, Piston
and Connecting rod, Cotter and Knuckle joint. Riveted Joint and
Welded Joint.
3. SYLLABUS
Free hand sketching: Need for free hand sketching of standard
parts and simple machines components.
Section C
Assembly drawing with sectioning and bill of materials from
given detailed drawings of assemblies: Lathe Tail stock, Machine
vice, Pedestal bearing
Section D
Assembly drawing with sectioning and bill of materials from
given detailed drawings of assemblies Steam stop valve, Stuffing
box, Drill jigs and Milling fixture.
4. Introduction- Graphic Language
• Engineering drawing has its origin sometime in 500
BC in the regime of King Pharos of Egypt when
symbols were used to convey the ideas among
people.
• Irrespective of language barriers, the drawings can
be effectively used in other countries, in addition to
the country where they are prepared.
• Thus, the engineering drawing is the universal
language of all engineers.
5. Classification of Drawing
• Machine Drawing-
- Pertaining to machine
parts or components.
- presented through a
number of
orthographic views.
- Size & shape of
component is fully
understood.
6. • Production Drawing –
- Referred as working drawing.
- Should furnish all dimensions, limits & special finishing processes
such as heat treatment, honing, lapping, surface finish, etc.
- Title should also mention the material used for the product, number
of parts required.
7. • Part Drawing-
- Detailed drawing of a
component to facilitate its
manufacture.
- Follows principles of
orthographic projection
• Assembly Drawing-
- A drawing that shows the
various parts of a machine
in their correct working
locations.
8. Principle of Drawing
To provide the correct information about drawings to all
concerned people, the drawing must be prepared, following
certain standard practices, as recommended by Bureau of
Indian Standards (BIS).
• Sheet Size- For a reference size A0
having a surface area of 1
X = 841 mm and Y = 1189 mm.
10. • Title Block –
(i) Title of the drawing
(ii) Sheet number
(iii) Scale
(iv) Symbol, denoting the method of projection
(v) Name of the firm / institute
(vi) Initials of staff drawn, checked and approved.
11. • Borders & Frames –
Minimum 20 mm for size A0 & A1.
Minimum 10 mm for size A2, A3, A4.
• Centering Marks
• Metric reference
graduation
• Grid reference
system
• Trimming mark
12. Scales
• The various types of scales used in machine drawing are
1. Full scale 1:1
2. Reduced scale 1:X
3. Enlarged scale X:1
The standard scales are given in Table
15. Dimensioning
1. As far as possible, dimensions should be placed outside the
view.
2. Should be taken from visible outlines, not from hidden lines.
3. Dimensioning to a centre line should be avoided except
when the centre line passes through the centre of a hole.
4. Each feature should be dimensioned only once in a drawing.
5. Placed on the view or section that relates most clearly to the
corresponding features.
6. Each drawing should use the same unit for all dimensions,
but without showing unit symbol.
7. Minimum dimensions should be placed to define a whole
part.
8. No features of a part should be defined by more than one
dimension in any one direction.
16. Elements of Dimensioning
1. Dimension line — It is a thin continuous line terminated by arrowheads
touching the outlines, extension lines or centre lines.
2. Extension line (Projection line) — It is a thin line drawn outside and along the
outline. There should be a gap of about 1 mm between the extension line and
the outline.
3. Leader line —One end of the leader terminates either in an arrowhead or a dot.
The arrowhead touches the outline, while the dot is placed within the outline
of the object. The other end of the leader is terminated at a horizontal line
4. Arrowhead — An arrowhead is placed at each end of a dimension line. Its
pointed end touches an outline, an extension line or a centre line. The length
of arrowhead should be about three times its maximum width. The triangle of
the arrow should be completely filled in.
17. Methods of indicating Dimensions
1. Aligned system, and
2. Unidirectional system.
1. Aligned system — In the aligned system, the dimensions are
placed above the dimension lines and may be read either
from the bottom or from the right side of the drawing
2. Unidirectional system — In the unidirectional system, all
dimensions are placed with respect to the bottom of the
drawing, irrespective of the disposition of the dimension
line. In the system, the dimension lines are broken to insert
their dimensions . This system is preferred for big drawings
specially when it is not convenient to read the dimension
from the right side or any other direction.
21. Limits , Fits and Tolerance
• The system in which a variation in dimensions is accepted is
called the limit system.
• The allowable deviations are called tolerances.
• The relationships between the mating parts are called fits.
22. Limits
• The two extreme permissible sizes between which the actual
size is contained are called limits.
• The maximum size is called the upper limit and the minimum
size is called the lower limit.
• Tolerance is denoted by two symbols, a letter symbol and a
number symbol, called the grade.
• It is the difference between lower and upper deviation.
Tolerances
27. Types of Fits
1. Clearance Fit –
It is a fit that gives a clearance between the two mating
parts.
28. Types of Fits
2. Transition Fit –
This fit may result in either an interference or a clearance,
depending upon the actual values of the tolerance of
individual parts.
29. Types of Fits
3. Interference Fit -
If the difference between the hole and shaft sizes is negative
before assembly; an interference fit is obtained.
31. Surface finish
The geometrical characteristics of a surface include,
1. Macro-deviations,
2. Surface waviness, and
3. Micro-irregularities.
The surface roughness is evaluated by the height, Rt and mean roughness
index Ra of the micro-irregularities.
38. Gears
• Gears are machine elements, which are used for power transmission
between shafts, separated by small distance.
• While two gears are meshing, the teeth of one gear enter the spaces of
the other. Thus, the drive is positive and when one gear rotates, the other
also rotates; transmitting power from one shaft to the other.
40. • Pitch Circle – Outlines of imaginary smooth rollers or fiction
discs in every pair of mating gears.
• Pitch Diameter – Diameter of pitch circle (P.C.D.)
• Root Diameter – Diameter at the bottom of tooth space.
• Addendum – Height from pitch circle to the tip of the tooth.
• Dedendum – Depth of tooth space below pitch circle.
(addendum + clearance)
• Circular Pitch (C.P.) – Length of arc of pitch circle between
similar faces of successive teeth.
• Diametral Pitch (D.P.) – Number of teeth divided by pitch
diameter.
• Module (m)- Pitch diameter divided by number of teeth.
• Circular Tooth Thickness – Length of arc of the pitch circle
between opposite faces of same tooth (0.5 C.P.)
41. • Base Circle Diameter – Diameter of circle from which
involute is generated.
• Line of Action – Common tangent to the two base circles,
which passes through the pitch point of a pair of mating
gears.
• Pressure Angle- Acute angle formed between the line of
action and common tangent to the two pitch circles, which
passes through the pitch point.
• Tooth Fillet – Rounded corner at the bottom of tooth space.
• Centre Distance – Distance between centers of a pair of
mating gears and is equal to sum of the radii of pitch circles of
the two gears.
• Pitch Point – Point of contact between the pitch circles of
two gears in mesh & lies on the line joining their centers.
42. • Tooth face
• Tooth flank
• Crest of tooth
• Root of tooth
• Whole depth
• Working depth
• Addendum circle
• Dedendum / root circle
• Chordal pitch
43. Gear Calculation
• Circular Pitch = Circumference of P.C.D. / No. of teeth
= P.C.D. x π / No. of teeth
C.P. = P.C.D. x π / N
• Diametral Pitch = No. of teeth / Pitch Circle Diameter
= N / P.C.D.
• C.P. x D.P. = π
C.P. = π / D.P. And D.P. = π / C.P.
• Metric Module , m = Pitch Circle Diameter / No. of teeth
= P.C.D. / N
= 1 / D.P.
C.P. = π / D.P. = π x m
44. Outside Diameter = Pitch diameter + 2xAddendum
Root Diameter = Pitch diameter - 2xDedendum
Clearance = Dedendum – Addendum
Tooth thickness = C.P. / 2
Addendum = 1 / D.P. = C.P. / π = m
Clearance = C.P. / 20 = (π/D.P.) x (1/20) = 0.157 x m
Pressure angle, θ = 14.5 or 20 degree
Base circle diameter, B.C.D. = P.C.D. x Cos θ
Involute gears will work correctly together if they have the same
pressure angle and diametral pitch.
Gear Calculation