gp 2012 part 1

Press Tools

Madhukar Nagare

Tool Design

• It is a specialized area of manufacturing engineering which comprises the analysis, planning, design, construction and application of tools, methods and procedures necessary to increase manufacturing productivity.

• Work holding tools – Jigs and Fixtures• Cutting tools• Sheet metal dies• Forging dies• Extrusion dies• Welding and inspection fixtures• Injection molds

Sheet-Metal Forming Processes

• Description: 1. Alloy: 1100, 1050, 1060, , 3003, 5052, 8011 etc. 2. Temper: H12. H14. H16. H18. H22. H24. H26. O etc. 3. Thickness: 0.01mm -- 3.0mm 4. Width: 100mm_1000mm 5. Packing: Export standard, covering with brown paper and plastic film then packed with wooden case/pallet 6. Surface: Mill finish 7. Lead Time: Within 30 days 8. Payment Terms: T/T, irrevocable L/C at sight

• Description: Aluminum strip for electrical transformers winding

Alloy: 1050, 1060,

Temper: O

Thickness: 0.2_2.0mm

Width: 10_1200mm

Inner Diameter: 300mm, 400mm, 500mm

Resistivity at 20 degree centigrade: Less than 0.02825Ω. Mm/m

Surface: Mill finish

Mechanical Press

Hydraulic Press

Progressive Die

Characteristics of punched hole and slug

Penetration

Roll Over + Burnish = Penetration

Percent PenetrationsMaterial % Penetration

Silicon Steel 30Aluminum 60

.10 C Steel Annealed 50.10 C Steel Cold

Rolled38

.20 C Steel Annealed 40.20 C Steel Cold

Rolled28

.30 C Steel Annealed 33.30 C Cold Rolled 22E.V. crane, Plastic Working in Presses, John Wiley and Sons, Inc., New

York, 1948, p. 36