Casing fabrication (3 weeks on this department)

1. Punching

Fabrication department

Punching machine

The details in worksheet are checked(dimension of the sheet;3151 x 850,and the dimension of the hole to be punched;34mm)

The required metal sheets are brought in

The punching hole equipment(34mm as per worksheet)

The drawing on where the hole must be punched is studied carefully

The measurement is taken as per drawing(1185mm length)

241mm width

The area to be punched is marked correctly

The sheet is placed on the machine

The metal sheet must be tighten and rigid in position

The adjustment part(to adjust the puncher up and down)

To move the sheet up and down

The air stepper to move and push the puncher towards the sheet

When the stepper is pressed,the puncher will move downwards and makes a hole on the metal sheet

Finally the 34mm hole is obtained

All the sheets that are punched are placed for the next step which is the rolling process

Done