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Week 5

The document outlines a series of bench work tasks performed by technician Mr. Hanniel, including procedures for creating various tools such as a grinder key, open-ended spanner, and double-ended spanner. Each task details the tools used and step-by-step instructions for cutting, filing, drilling, and finishing the work pieces. The conclusion highlights challenges faced during the tasks and provides recommendations for improving accuracy and safety.

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kevonwilliamss456
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24 views5 pages

Week 5

The document outlines a series of bench work tasks performed by technician Mr. Hanniel, including procedures for creating various tools such as a grinder key, open-ended spanner, and double-ended spanner. Each task details the tools used and step-by-step instructions for cutting, filing, drilling, and finishing the work pieces. The conclusion highlights challenges faced during the tasks and provides recommendations for improving accuracy and safety.

Uploaded by

kevonwilliamss456
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Week 5

BENCH WORK

Technician , Mr Hanniel

Tools used

 Hack saw
 Flat file
 Round file
 Scriber
 Try square
 Steel rule
 Bench vice
 Center punch
 Drill bit
 Ball peen hammer

Task one
Procedure
a. Cut a work piece of length 110 mm and width 30 mm
b. File the ends to make them 90 degrees , use a try square to measure 90 degrees
c. Cut of each corner 6 mm by 6 mm deep
d. Chamfer the corners
e. Mark 8 mm frim the 6 mm mark and punch using a center punch in each corner
f. Drill holes of diameter 6
g. Mark the center of the work and punch
h. Drill a hole of diameter 8 mm at the center
Task two

Grinder key

Procedure

a) Using a hacksaw cut a work piece of length 230 mm by 50 mm wide from a plate
b) Mark out the profile of the grinder key
c) Using a hacksaw cut along the out line leaving 1 mm allowance for filling
d) Chamfer the sharp corners
e) Mark out a radius of 8 mm at the handle and cut it
f) Drill a hole of 6 mm at end of the handle
g) Make fillets of radius 5 mm
h) Do finishing by use of a sand paper

i) the profile
Task three
Open ended spanner
Procedure
 Using a hacksaw cut a work piece of length 130 mm by 30 mm width
 Using a flat file, file the ends to make them 90 degrees
 Mark out the profile of the spanner using a scriber on the work piece
 Using a hack saw, flat file and round file make the open end
 Using a hacksaw cut a handle of 12 mm leaving 1 mm allowance for filling
 Mark 10 mm frim the end and dot punch
 Drill 6 mm hole
 Step down the grip section from 6 mm to a final thickness of 3 mm
 Do finishing by use of a sand paper

the profile
Task four

Procedure

 Using a hacksaw, cut a work piece of length 130 mm and 50 mm width


 Mark out the profile of the double ended spanner
 Make the open ends proceeding to the handle
 Locate the centers of the holes and curves and draw the arcs and the circles
 Using a hacksaw cut along the handle of 11 mm leaving an allowance I I mm for filling
 File at the sharp corners to radius of 0.5 mm on faces of the circles
 Fillet the grip section to a radius of 2 mm
 Do finishing use of a sand paper
Conclusion
Geometrical Misalignments were the main challenge faced and minor injuries
Recommedations
Students should be accurate on their measurements
Use hand gloves to avoid minor injuries
References
The workbench book by Scott Landis
Engineering Practice Module 13

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