PD PMD Cadcam
PD PMD Cadcam
PD PMD Cadcam
POST DIPLOMA
IN
PLASTICS MOULD DESIGN WITH CAD/CAM
(PD-PMD WITH CAD/CAM)
Academic Cell
SYLLABUS
SEMESTER - I
THEORY
MARKS
SUBJECT CH TH EH
CODE INT EXT TOTAL
PD 101 Plastics Materials 36½ 4 3 40 60 100
PD 102 Plastics Product Design 51 3 3 40 60 100
PD 103 Plastics Mould Design – I 51 3 3 40 60 100
Plastics Processing
36½ 4
PD 104 Technology 3 40 60 100
174 15
Total (18 weeks – 10½ hours per week) 12 160 240 400
189
PRACTICAL
PDL 105 Plastics Testing & QC Lab 27 4 50 50 100
PDL 106 Plastics Processing Lab 27 4 50 50 100
PDL 107 Design Lab – I 270 8 200 200 400
Library 27 - - - -
Total (18 weeks – 19½ hours per week) 351 16 300 300 600
SEMESTER - II
THEORY
MARKS
CODE SUBJECT
TOTAL
CH TH EH INT EXT
PD 201 Plastics Mould Design – II 51 3 3 40 60 100
Mould Manufacturing
24 3 3 40 60 100
PD 202 Technology
Reverse Engineering And Rapid
Prototyping 24 3 3 40 60 100
PD 203
Process Planning & Cost
24 3 3 40 60 100
PD 204 Estimation
123 12
Total (18 weeks – 7½ hours per week) 12 160 240 400
135
PRACTICAL
PDL 205 Manufacturing Practice 108 8 100 100 200
PDL 206 Design Lab - II 270 8 200 200 400
Library 27 - - - -
Total (18 weeks – 22½ hours per week) 405 16 300 300 600
SYLLABUS
SEMESTER - III
MARKS
CODE SUBJECT HOURS INT EXT TOTAL
PDL 301 Project Work 378 200 200 400
Note:
Polymer composites, Blends & Alloys: Definition, Properties, Advantages & Applications.
Shrinkage, Wall thickness – variations in wall thickness – suggested wall thickness for
various plastics materials – Tapers or draft angles. – Design of radii, fillets, ribs and bosses.
Undercuts – External & Internal –. Moulded Holes - through holes – blind holes – threaded
holes – side holes – holes parallel to draw – nearness of holes to each other and side wall –
moulding holes not parallel to draw – drilled and tapped holes.
Design of integral hinges, hinges and snap fits for boxes and assembly of moulded parts.
Moulded threads – thread types. Interference between the threads. Inserts – materials –
selection of metal for inserts – minimum wall thickness of material around inserts –
anchorage - relieving moulding stresses around inserts – location of inserts in the part –
moulded inserts – pressed in inserts.
Tension bars – columns – beams – pipes – plates and shells. Design of joints – bolted joints
– bonded joints, etc.
Designing with plastics for load bearing applications like gears,
bearing, spring. Assembly – Mechanical fasteners
UNIT II ( 12 Hours)
Ejection System:
Types of ejector grid – Ejector plate assembly – Guiding & Supporting ejector plate assembly -
Types of ejection – position & critical area of ejection – pin ejection – stepped pin-part of pin-“D” –
Pin-blade ejection – sleeve ejection – stripper ring ejection – stripper plate ejection – air ejection –
double ejection – Delayed action ejection – Types of sprue pullers – calculation of support pillar
requirements. Calculation of Ejection force, ejection stroke etc.
Mould Temperature Control System:
Mould cooling – Integer type cavity and core plates cooling, angled hole systems, baffled hole
systems, stepped circuit – Types of bolster cooling – Insert cooling, Deep chamber design, Bubbler
cooling, Baffle cooling, spiral cooling –cooling circuits – Principle of heat pipe, heat rod, capillary
tube and its applications – Cooling for sprue bush – O-rings – cooling nipples – Calculation of
cooling efficiency, cooling time. Mould heating methods, Mould temperature controller.
Two Plate / Part Mould and Three Plate / Part Mould Design, Split moulds: External undercuts -
Splits – Guiding and retention of splits – finger cam and dog leg cam actions – cam track – spring –
hydraulic actuation – side cores and side cavities – Calculation of split movement – Split safety
arrangements –Angled lift split – form pin and Angled pin action – split cores– Collapsible core.
Types of injection moulding machines – specifications – shot capacity – shot weight – plasticising
capacity – projected area – locking forces – platen details – maximum and minimum daylight –
nozzle details – locating mould on machines– ejection systems – Machine platen locking methods –
dry cycle time and its application in Mould Design.Calculating No. of impressions –projected area,
injection pressure, clamping tonnage. Lay-out of impressions.
Standard Mould Base- Advantages and limitations, manufacturers etc., Standard ejector pins, guide
pins, bushes, mould date indicators, mould springs, cooling baffles, nipples, parting locks etc
Blow Moulding:
Introduction to blow moulding - types of blow moulding operations - extrusion blow moulding -
injection blow moulding - stretch blow moulding - basic principles - parison control - wall
thickness in relation to parison - types of extruders for blow moulding - blow mould
construction - setting and operation - mould cooling - clamping force - cycle time - moulding
faults - causes and remedies - quality control - operator safety.
Extrusion:
Introduction - extruder parts - extrusion screw - design features - design variables - extruder
output - extrusion process parameters - their effects on product - extruder faults - causes and
remedies. Extrusion of film, pipe, sheet, profile and coating - dies for different extrusion
process - sizing units - hauloff units - process control systems - process variables - quality
control and safety.
UNIT IV ( 9 hours)
Thermoforming:
Introduction - thermoforming methods - thermoforming dies - thermoforming equipment
description - temperature control - cycle time - defects, causes and remedies - quality control
and safety
Roto-Moulding:
Introduction to rotomoulding – principle of bi-axial rotation –
equipment description – temperature control systems – cycle time – defects, causes and
remedies.
UNIT V ( 4½ hours)
Practical Exercises
Practical Exercises
4. Extrusion : 9 Hours
a) Pipe & profile extrusion
b) Blown film extrusion
c) Multilayer blown film extrusion
Note : Design Practicals Sl.No.:3 to 10 shall be carried out by utilizing CAD software.
Moulds for threaded components – automatic unscrewing – various unscrewing methods – inline
layout – pitch circle layout – mould movements – hydraulic and pneumatic core systems for mould
movement – runner less moulds – insulated and hot runner moulds – Types of manifold block,
primary nozzle & secondary nozzle design – flow way system – types of shut off valve system – Hot
runner mould – Water Assisted & Gas Assisted Injection Mould – multi-colour moulding – insert
moulding – outsert moulding – stack mould – two and three level.
Types of blow moulds - extrusion - injection stretch blow moulds - blow ratio - parison design -
pinch off design - parting line - clamping force - mould venting, mould cooling - mould alignment.
Design for industrial applications.
Principles of extrusion - die geometry - die swell - die land design - sizing die design - construction
of extrusion dies - blown film - pipe - profile - flat film - sheet - wire coating and co-extrusion dies.
Introduction – Mould material – Mould design: Mould frame, Moulded in inserts, Moulded
handles, Movable cores. – Mould venting – Mould cooling.
Ferrous - non ferrous materials - copper - bronze - beryllium copper, Al - Mg alloys and its
significance as a materials for mould making - miscellaneous materials - mould steel - alloying
elements - material selection for different parts of the mould and their heat treatment, IS
standards, British standards for mould materials.
Tool room machinery - their recognition, appreciations and limitations - machining operations
and accuracy.
Conventional tooling machines - shaper - planner - lathe – drilling - milling - horizontal, vertical
& universal type – jig boring - grinding - pantograph engraving.
Different types of CNC machine tools - Lathe, Milling, VMC, EDM, Wire EDM - CAD integrated
with CAM.
Introduction to tool room inspection-measuring instruments-co-ordinate measuring machine -
taper and angle measurement techniques.
Unit IV ( 3 Hours)
Hours)
Unit V ( 3 Hours)
Mould assembly-check list for mould assembly-fitting and assembly of various mould
elements- core insert, cavity insert, sprue bush-ejection system assembly-blue matching and
die spoting-venting - final inspection-fitting of locating ring and carrier bar- mould trial.
Unit III Liquid and Solid Based Rapid Prototyping systems ( 6 Hours)
Selective Laser Sintering, Direct Metal Laser Sintering, Three Dimensional Printing, Laser
Engineered Net Shaping, Selective Laser Melting, Electron Beam Melting: Processes,
materials, products, advantages, applications and limitations
Classification: Soft tooling, Production tooling, Bridge tooling; direct and indirect – Fabrication
processes, Vacuum casting - Applications.
Process planning and control – Introduction – objectives & importance – process planning –
scheduling & control of production – Selection & Analysis – Steps involved in manual planning and
computer aided process planning – merits and demerits.
Introduction - Material Cost - Determination of Material Cost - Labour Cost - Determination of Direct
Labour Cost - Expenses - Cost of Product (Ladder of cost) - Illustrative examples. Analysis of
overhead expenses - Factory expenses - Depreciation - Causes of depreciation - Methods of
depreciation - Administrative expenses - Selling and Distributing expenses - Allocation of overhead
expenses.
Proforma for cost estimation – product cost – estimation of machining time & costs - mould cost -
Processing cost - project costing.
5. EDM 10 Hours
Note : Design Practicals Sl.No. : 3 to 11 shall be carried out by utilizing CAD software.
A report should be submitted by the student after successful completion of the same along with a
certificate from the Industry. It will help the student to understand the Industry requirement for
selection of product and executing the Project.
PDL 303 SEMINAR - CASE STUDIES ON PRODUCT & MOULD DESIGN ( 54 Hours)
Each student shall present a case study with part drawing and mould design as part of seminar in
the class room in front of the students and shall be evaluated by the faculty. Suggested topics are
given below for selection by faculty and allocation to the student. Student maybe encouraged to
select automobile, electrical and other engineering products.
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