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7/30/2019 Workshop Polytechnic
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CARPENTRY SHOP
1. To study the various tools and type of wood used in carpentry shop.2. To perform the various operations on wood like measuring, marking,
sawing, cutting, planning, chiseling etc.
3. To prepare a cross lap joint/ half lap joint.4. To prepare a dovetail joint/mortise and tenon joint.
FITTING SHOP
1. To study various tool used in fitting shop and identification of varioussections of steel such as flat,angle,tee,channel,bar girder,square,Zsection
etc.
2. To perform the various fitting operations like hack sawing, filing, on M.S.flat.
3. To learn care and maintenance of measuring tools like calipers, steel rule,try square,vernier calipers,micrometer,combination set, and to find the
least count of all gauges.
4. To prepare a V block.WELDING SHOP
1. To study welding, types of welding, common material that can be weldedand welding equipments.
2. To study safety precaution, hazards of welding and its remedies.3. To study various welding processes like, Electric arc welding, Gas welding.4. To prepare a Lap joint/butt joint by using electric arc welding.
SHEET METAL SHOP
1. To study various hand tools and accessories e.g. hammers, mallet, wiregauge used in sheet metal shop.
2. To study various metal used in sheet work.3. To learn about various machine and equipments used in sheet metal shop
like shearing machine, power press, sheet bending machine.
4. To prepare single riveted lap joint/double riveted lap jointBLACKSMITHY SHOP
1. To study various tools and equipments used in Black smithy shop.2. To study various forging operation like bending, upsetting etc.3. To prepare a L hook/nail.
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WOOD- wood is the raw material used for carpentry work. Various types of
wood are: (1) soft wood (2) hard wood
Soft woodthis belongs to tree with narrow leaves. These trees are
-light in color
- Light in weight
- Color of sapwood and heartwood is not different
- Example pine wood kail deodar
Hard wood- belongs to trees with broad leaves
-dark in color
- Comparatively heavy
- having more strength than soft wood
-e.g. shisham, shal,neem
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FITTTING SHOP
EXPERIMENT NO 1
OBJECT-to study the various tools used in fitting shop
(a) Marking and measuring tools-
Steel scale, trysquare, combination set scriber, caliber, gauge,
divider, surface plate.
(b) Holding and supporting tools-vices block angle plate
(c) Cutting tools-hand hacksaw, files, chisel
(d) Striking tools-(hammers) ball peen, crosspeen, straight
peen
(e) Drilling and threading tools-twist drill, tap set, with die
with die holder
EXPERIMENT NO 2
OBJECT- To perform the various fitting operation on a M.S flat
SAWING-IT Sis the operation required to cut the metal in
different shape and sizes cutting takes place only during the
forward stoke whereas backward stoke is either coolant
should be used during the cutting
FILLING-it is the operation perform by files pressure for cutting
or rubbing should be exerted during the forward stroke
whreas backward stroke is ideal,it is done 3 ways first of all
cross filing is done for more stock remoble followed by
straight filing and for final finishing draw filing is done.
SCRAPPING-this operation is mainly done in a fitting shop for
producing more accurate finish than obtained by filing. Stoke
removal for a localized portion in scrapping
TAPPING- it is the process cutting internal threads with the
help of tape and tape holder
DIEING- it is cutting external threads with the help of die and
die holders
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EXPERIMENT NO.2
OBJECT- To perform the various carpentry operations like
measuring, marking, sawing, planning, chiseling.
MARKING-it is the process of setting the dimension on a piece
of wood for required shape. Marking is done with the help of
pencil, scriber, tri-square, marking gauge, mortise gauge etc.
SAWING-IT is the cutting process of wood in required shape
and size like straight inclined or curved. Sawing is done with
the help of various saws in work piece is held in bench wise
PLANING- it is the process of smoothing the surface of a piece
of wood by a planner. First job is held in holding device like
bench wise. Pressure is applied on the plan during the forward
stroke and relived during the backward stroke.
CHIESLING-it is the process cutting the Smallwood stock to get
the desired shape. chisel should be hit by a mallet
EXPERIMENT NO.3
Welding Lab
1. OBJECT-: To study welding, types of welding, common material that can bewelded and welding equipments.
WELDING-welding is a process of permanently joining two material pieces
preferably pieces of some metal with or without application of pressure
with or without use of filler material but with application of heat.
WELDING CAN BE BROADLY CLASSIFIED AS-
1.PRESSURE WELDING-usually metal to be join do not melt alwayspressure is applied to affect the weld.no filler metal is added
2.FUSION WELDING. Metal pieces to be joined are melted locally no
pressure is applied .
TYPES OF WELDING PROCESS-
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1 ARC WELDING
2 GAS WELDING
3 RESISTANCE WELDING
COMMON MATERIAL-Cast iron, Stainless steel ,Nickel and
nickel alloys
Safety
Make sure there is proper ventilation in the area that you are welding in.Always wear a functional welding helmet while welding.
Alway
s wear a leather apron and leather gloves while welding. Long sleeved
shirts are also recommended.
People wearing nylon
-
topped shoes should wear a pair of leather spats when
welding.
Do not attempt to touch recently w elded objects (even with gloves) until
they
have cooled.