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TOPIC- Bench work Tools It’s Uses &
Process
PREPARED BY:
LAL CHAND SHARMA
(from icar year 2014-18)
SHAILESH K. MEENA
MISCELLANEOUS TOOLS:-
1.Punch
2.Calipers
3.Screw Drivers
4.Drills
5.Taps
BENCH WORK PROCESSES:-
1.Marking 2.Chipping
3.Sawing 4.Filling
5.Draw Filing
PUNCH
Used for marking purpose
Made by steel rod
Generally length is 90mm to
150mm and diameter is 8mm to
13 mm
•Used for measuring the
dimension of component.
•Easy to use.
•Used for rotating the
screws.
•Various size is available
for various screw heads.
•Used for making
different types of holes
according to
requirements.
Types of drills:
•Flat drill (used for wood
work)
•Twist drill(used for
metals work)
•Drills are made of high
carbon steel.
TAPS
 Used for cutting
internal threads in
cylinderical holes.
TAPS
TAP WRENCH
•Used for cut threads on a
round bar of metal.
•Die is a round or a square
block of hardened steel.
•Die may be solid or
adjustable type
MARKING
 Marking can be done by
setting out dimensions
with a help of a working
drawing.
 The surface to be Marked
is coated with either a
paste of red led or a chalk
and allowed to dry.
 Lines in a horizontal direction are scribed by scribing
gauge.
 Lines at right angles can be drawn by first turning the
work through 90 C and then using the scriber.
 Lines can be marked with the help of try square.
 Circles and arch on flat surface are inscribed by using
dividers.
 Indentations on the surface are made using the center
punch and hammer along scribed lines and arcs.
 The punch mark helps for further operations like filing
,chipping and drilling
CHIPPING
 This operation used for removing the excess metal by
using cold chisels.
 The cutting angles of chisels differs for different
metals.
 To make easy and effective we used lubrication and
cooling of the cutting edges during removal of large
amount of metal.
Types of chisels
SAWING
 This operation used for cutting different metal.
 For sawing the saw blades should be properly fitted
and stretched to have the proper tension.
 Cutting teeth should be away from the operator so that
to cut the metal in forward stroke.
 Sufficient pressure should be exerted in the forward
stroke and this be released during the backward
stroke.
FILING
 Filing is a cutting process.
 It cut the metal during the forward stroke.
 The pressure of hand in filing should be applied
during the forward and relive during the backward
stroke.
DRAW FILING  Draw filing is used for
finishing the surface.
 A flat file of fine cut is used
for this.
 For draw filing operation the
file is held flat on the surface
between the two hands.
 The file must move forward
and backward.
CROSS FILING
workbench tools & its uses

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workbench tools & its uses

  • 1. TOPIC- Bench work Tools It’s Uses & Process PREPARED BY: LAL CHAND SHARMA (from icar year 2014-18) SHAILESH K. MEENA
  • 2. MISCELLANEOUS TOOLS:- 1.Punch 2.Calipers 3.Screw Drivers 4.Drills 5.Taps BENCH WORK PROCESSES:- 1.Marking 2.Chipping 3.Sawing 4.Filling 5.Draw Filing
  • 3. PUNCH Used for marking purpose Made by steel rod Generally length is 90mm to 150mm and diameter is 8mm to 13 mm
  • 4. •Used for measuring the dimension of component. •Easy to use.
  • 5. •Used for rotating the screws. •Various size is available for various screw heads.
  • 6. •Used for making different types of holes according to requirements. Types of drills: •Flat drill (used for wood work) •Twist drill(used for metals work) •Drills are made of high carbon steel.
  • 7.
  • 8. TAPS  Used for cutting internal threads in cylinderical holes. TAPS TAP WRENCH
  • 9. •Used for cut threads on a round bar of metal. •Die is a round or a square block of hardened steel. •Die may be solid or adjustable type
  • 10. MARKING  Marking can be done by setting out dimensions with a help of a working drawing.  The surface to be Marked is coated with either a paste of red led or a chalk and allowed to dry.
  • 11.
  • 12.  Lines in a horizontal direction are scribed by scribing gauge.  Lines at right angles can be drawn by first turning the work through 90 C and then using the scriber.  Lines can be marked with the help of try square.  Circles and arch on flat surface are inscribed by using dividers.  Indentations on the surface are made using the center punch and hammer along scribed lines and arcs.  The punch mark helps for further operations like filing ,chipping and drilling
  • 13. CHIPPING  This operation used for removing the excess metal by using cold chisels.  The cutting angles of chisels differs for different metals.  To make easy and effective we used lubrication and cooling of the cutting edges during removal of large amount of metal.
  • 15. SAWING  This operation used for cutting different metal.  For sawing the saw blades should be properly fitted and stretched to have the proper tension.  Cutting teeth should be away from the operator so that to cut the metal in forward stroke.  Sufficient pressure should be exerted in the forward stroke and this be released during the backward stroke.
  • 16.
  • 17. FILING  Filing is a cutting process.  It cut the metal during the forward stroke.  The pressure of hand in filing should be applied during the forward and relive during the backward stroke.
  • 18.
  • 19. DRAW FILING  Draw filing is used for finishing the surface.  A flat file of fine cut is used for this.  For draw filing operation the file is held flat on the surface between the two hands.  The file must move forward and backward. CROSS FILING