Safety Rules and Regulations for ME3162 Labs Sessions

These rules and regulations must be read before attending the lab sessions. Students who do not comply with the rulings will not be allowed to attend the labs.

1. Attire:

Only non-slippery shoes, toes covered, are allowed in the workshop, example: sports shoes. Long Pants or slacks, NO Bermuda. Short sleeve shirts or T-shirt with shirt tails tucked in. Long hair to be tied up and covered by paper cap (provided).

2. Workshop practices involve operating power machines. Students who feel unwell or under medications that cause drowsiness should not attend the training and seek permission for make up lesson.

3. Loose clothing, long sleeves, bracelets, rings or watches may become entangled in moving tables or revolving spindles. Remove them before start work.

4. Safety glasses must be worn when working with machines.

5. Do not attempt to use any machine or tool until you understand its operations. If in doubt, ASK.

6. Do not attempt to touch any rotating or moving parts.

7. All injuries, however slight, should be reported immediately and receive treatment.

8. Adhere closely to instructions by instructors.

Department of Mechanical Engineering ME 3162 Turning Part Unit mm Material Aluminium

22°

5 5

∅9

∅37

∅30

∅16

∅22

30 10

50

∅10 Hole Depth 15

SEQUENCE OF OPERATION

A. Set Up and Turn First Shoulder

Insert the workpiece into the three jaw chuck, leave protrusion about 35mm, tighten the chuck, and skim the end of bar. S (Spindle speed) : 600 rpm

Turn to Diameter 37mm, Depth 28mm

35mm

37mm

28mm

Leave about 35mm of length outside the chuck

B. Turn the Second Shoulder, Diameter 32 by 15mm depth

C. Turn over the workpiece, Clamp at the Diameter 32mm end, shoulder press against the chuck. Trim the end face till the Measure length equals to 35mm

D37mm

D32mm

28mm

15mm

Dia.32mm

D. Turn the end into a shoulder of Diameter 17mm, Depth 5mm E. Set the Compound Slide to 22 Degree, and use it to machine the taper.

5mm

17mm

22mm

F. Drill the final hole.

Step 1: Drill the center hole to the depth about 4 to 5 mm. S 600 Tool : Center drill. Manual feed Step 2: Drill the 10mm hole to the depth of 40 mm. S 600 Tool : 10mm twist drill. Manual feed Step 3: Chamfer the hole to the depth about 1.5 mm. S 160 Tool : Countersunk tool. Manual feed G. Engrave your Group, Name, Date before submission.