Manufacturing and Technology

7/29/2019 Manufacturing and Technology

1/17

Ex. No: 1

Date :

DRILLING AND TAPPING ON A MILD STEEL PLATE

SKETCH:

ALL DIMENSIONS ARE IN mm.

TAP DRILL SIZE = (D 0.6495) X 2d X p

= (12 - 0.6495) X (2 X 0.75) X 1.75

= 10.3 mm

D= Diameter of the tap (12 mm)

d = depth (0.75 mm)

p = pitch (1.75 mm)


2/17

Ex. No: 1

Date :

DRILLING AND TAPPING ON A MILD STEEL PLATE

AIM:

To drill and tap 4 holes on a Mild Steel plate as per the dimensions givenin the sketch using Drilling machine and Die set

MATERIALS REQUIRED:

M.S. Flat 50 X 50 X 6 mm thick

TOOLS AND INSTRUMENTS REQUIRED:

1. Steel rule

2. Dot punch

3. Hammer4. Drill bit

5. File (flat surface)

6. scriber

7. vernier caliper

8. Divider

9. Tri Square

10. Spanner

11. Die set

PROCEDURE:1. Drilling is the process of removing solid material from the job to

produce a circular hole.

2. Before drilling, the center of the hole is located by drawing two lines at

right angle and a center punch is used to make an identification for the drill

point(at the center) to start the drilling operation

3. A suitable drill bit is held in the drilling machine chuck and the

machine is adjusted to operate at the correct cutting speed.

4. The drilling machine is started and the drill starts rotating. Cutting

fluid is allowed to flow liberally and the cut is started.5. The drill bit is fed into the job slowly.

6. The hole, depending upon its length, may be drilled in one or more

steps of cut.

7. After the drilling operation is completed the drill bit is removed from

the hole and the power is turned off.

8. The chips are cleared from both the drill flutes and the job with the

help of a brush. The job is unclamped from the machine vise and all burrs are

cleared with the help of a brush.

RESULT:

Thus the job has been produced as per the dimensions given in the sketch

using Drilling machine and Die set.


3/17

Ex. No: 2

Date :

INTERNAL KEY WAY CUTTING ON A M.S ROUND

ROD

SKETCH:



4/17

Ex. No: 2

Date :

INTERNAL KEY WAY CUTTING ON A M.S ROUND

ROD

AIM: To produce 4 Nos. of internal keyways in the M.S. Round rod as per

the dimensions given in the sketch, using slotting machine.

MATERIALS REQUIRED: M.S Round rod 50 mm X 25 mm length

TOOLS and INSTRUMENTS REQUIRED:

1) Parting tool

2) Spanner set

3) Punch

4) Vernier caliper

PROCEDURE:

1. For slotting a keyway first of all scribe the centre lines across the work

piece and mark the width(4 mm) of the keyways on the work piece..

2. Set the job on a pair of parallels above 10 mm to 12 mm high andclamp down.

3. Use a parting tool about 10 mm wide and clamp it in the tool holder.

4. Adjust the stroke of the ram suitably and move the ram so that the tool

just cuts the keyway slowly during down stroke of the tool.

5. When within about 0.5 mm of depth wind away from tool, move

sideways until edge of tool will slot one side of keyway to the marking

out.

6. Finish that side to the marking out using a very fine feed.

7. Use a 12mm slip gauge and finish the other side of the keyway until atight fit to the gauge is achieved.

8. Finish the bottom of the keyway.

RESULT:

Thus the 4 numbers of internal keyways are cut on a M.S round rod as

per the dimensions given in the sketch cutting by using slotting machine.


5/17

Ex. No: 3

Date :

SURFACE GRINDING ON A M.S FLAT

SKETCH:

S U R F A C E G R IN D IN G

A L L D I M E N S I O N S A R E I N ' M M '

5.5

50.0

50.0

JOB: M.S.Flat 50X 50 X 6 mm thick


6/17

Ex. No: 3

Date :

SURFACE GRINDING ON A M.S FLAT

AIM: To produce a M.S Flat as per the dimensions given in the sketch using

surface grinding machine.

MATERIALS REQUIRED: M.S.Flat 50X 50 X 6 mm thick

TOOLS REQUIRED:

1. Vernier Caliper

2. Micrometer

3. Steel Rule

PROCEDURE:

1. Check whether the given work piece is suitable for this

operation.

2. Locate the given work piece on the magnetic chuck

3. Then the work piece is machined with the help of

driving wheel

4. This machining process is done on the both side of work

piece to obtain good surface finish.

5. Then the dimensions of work piece were checked by

using vernier caliper.

RESULT:

Thus the given job is machined as per the given dimensions in the sketch

using surface grinding machine.


7/17

Ex. No: 4

Date :

EXTERNAL KEYWAY CUTTING

SKETCH:

EXTERNAL KEYWAY CUTTING

32.06.5

4.0


Ex. No: 4


8/17

Date :

EXTERNAL KEYWAY CUTTING ON ALUMINIUM

ROUND ROD

AIM: To produce 4 Nos of external keyways as per the dimensions given in the

sketch using milling machine.

MATERIALS REQUIRED:

Aluminium 32 X 30mm length


1) Parting tool

2) Spanner set

3) Punch

4) Vernier caliper

PROCEDURE:1. Initially the work piece is marked according to given dimensions.

2. The cutting tool (milling cutter) is inserted in the milling arbour

3. The work piece is clamped on the machine vice and the required

depth of cut is set.

4. The machining is performed by operating the tool towards the

work piece.

5. Finally, we get one external keyway cut on the work piece.

6. Repeat the same procedure and produce other three external key

ways on the work piece.

RESULT:

Thus the 4 Nos of external keyways are cut on Aluminium rod as per the

dimensions given in the sketch using milling machine.

Ex. No: 5


9/17

Date :

PRODUCING A SQUARE BLOCK FROM A CAST IRON

ROUND BLOCK

SKETCH:

ALUMINIUM 40 X 30mm Length

ALL DIMENSIONS ARE IN mm

Ex. No: 5

Date :PRODUCING A SQUARE BLOCK FROM A CAST IRON

ROUND BLOCK


10/17

AIM:

To produce a square block from the given cast iron round block using shaper

MATERIALS REQUIRED:

ALUMINIUM 40 mm X 30 mm Length

TOOLS & INSTRUMENTS REQUIRED:

1. HSS tool (V tool)

2. Sprit Level

3. Dot Punch

4. Tri Square

5. Hammer

6. Spanner- 1 set7. Steel rule

8. Scribers

PROCEDURE:

1) The given work piece dimensions are checked.

2) The facing operation is done on workpiece on two sides

3) Mark the required square shape on the given job by using dot

punch and hammer

4) The job is fixed on the machine vice properly.5) Proper stroke length is adjusted by moving the sliding block

towards the ball gear.

6) By giving down ward feed to the tool head and cross feed to the

table, the excess material is removed on the given job.

7) The finishing cut has to be given properly till the smooth surface

has been obtained on the job at each side of the job.

8) The above procedure is repeated for the remaining sides.

9) After completion of four sides the finished job is inspected against

the given dimensions.

RESULT:

Thus a square block is produced from the cast iron round block as per the

dimensions given in the sketch.

Ex. No: 6

Date :


11/17

PRODUCING A HEXAGONAL BLOCK FROM

ALUMINIUM ROUND BLOCK

SKETCH:


AIM: To produce a hexagonal block from the given round block as per the

dimensions in the sketch using Milling machine.

MATERIALS REQUIRED: Aluminium Block 30mm

TOOLS & INSTRUMENTS REQUIRED:

1. Parting tool

2. Spanner set

3. Punch

4. Vernier caliper

PROCEDURE:

1. Initially the work piece is marked according to given dimensions.


12/17

2. The cutting tool (milling cutter) is inserted to the milling machine arbor.

3. The work piece is clamped on the machine vice and the required depth of

cut is set.

4. The machining is performed by operating the tool towards the work

piece.

5. Finally, we get hexagonal block as per the dimensions given in the

sketch.

RESULT:

Thus a hexagonal block is produced from the aluminium round

block as per the dimensions given in the milling machine.

Ex. No: 7Date :


13/17

DOVETAIL CUTTING USING SHAPER

SKETCH:


Ex. No: 7

Date :


14/17

DOVETAIL CUTTING USING SHAPER

AIM:To produce a dove tail block from the given square block as per the

dimensions given in the sketch using shaper.

MATERIALS REQUIRED: Cast Iron block 50mm X 50mm X 25 mm


1. HSS tool (V tool)

2. Sprit Level

3. Dot Punch

4. Tri Square

5. Hammer

6. Spanner- 1 set7. Steel rule

8. Scribers

PROCEDURE:

1) The given work piece dimensions are measured.

2) The facing operation is done on workpiece on two sides

3) Mark the required dove tail shape on the given job by using dot

punch and hammer

4) The job is fixed on the machine vice properly.

5) Proper angle has been set and proper stroke length is adjusted by

moving the sliding block towards the ball gear.

6) By giving down ward feed to the tool head and cross feed to the

table, the excess material is removed on the given job.

7) The finishing cut has to be given properly up to the smooth surface

has been obtained on the job at each side.

8) The above procedure is repeated for the remaining sides of the job

also.

9) After completion of two sides the finished job is inspected againstthe given dimensions.

RESULT:

Thus the dove tail block is produced as per the dimensions given in the

sketch, from the C.I square block using shaper.

Ex. No: 8


15/17

Date :

ASSEMBLY OF FITS USING LATHE

SKETCH:


Ex. No: 8


16/17


17/17

CARE SCHOOL OF ENGINEERING

DEPARTMENT OF MECHANICAL ENGINEERING

ME2258-Manufacturing Technology Lab II

LIST OF EXPERIMENTS

1. DRILLING AND TAPPING ON A MILD STEEL PLATE

2. INTERNAL KEY WAY CUTTING ON A M.S ROUND ROD

3. SURFACE GRINDING ON A M.S FLAT

4. EXTERNAL KEYWAY CUTTING ON ALUMINIUM ROUND

ROD

5. PRODUCING A SQUARE BLOCK FROM A CAST IRON

ROUND BLOCK

6. PRODUCING A HEXAGONAL BLOCK FROM ALUMINIUM

ROUND BLOCK

7. DOVETAIL CUTTING USING SHAPER

8. ASSEMBLY OF FITS USING LATHE

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