Production Technology Laboratory Lab Experiments

Manufacturing of Washers using Compound Die

Oct 21 2023

Objective:

To prepare a scrap strip layout for the given sheet material.
To manufacture the washers with optimum utilization of sheet using compound die.

Preparation of Scrap Strip Layout:
Plan the layout accordingly that the percentage utilization of the sheet should not be less than 75%
%Utilization : = Area utilized/Total Area of Sheet
Total Area of sheet = L (Stock Length) x W (Stock Width )
Area Utilized depends on the shape of component which is blanked or pierced from the sheet.
Draw the layout with optimum layout and it will used while manufacturing the components.

Manufacturing of Washers:

Position the bottom part of the compound die just under the ram of the press.
Place the material between the punch and die.
Fix the top part of the die (punch) in the die holder and tighten it.
Close the release valve of the pump.
Operate the low pressure lever i.e. plunger with bigger dia. The ram will move very fast and touch the job.
Then operate the high pressure lever i.e. plunger with smaller dia. The gauge will start indicating the load.
Open the release valve, the ram will return to the original position.