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Die Design Dies

2. Objectives. Describe a die.Describe different types of dies. Describe a drawing die. Describe a compound die. Describe a progressive die. Identify die setups for bending. Explain how the die makes parts. Describe standard die components. Identify the components of the upper die shoe. Ide

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Die Design Dies

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    1. 1 Die Design Dies/ Presses Part1-Types & Components Tool Design, MET3331 Dr Simin Nasseri Southern Polytechnic State University

    2. 2 Objectives Describe a die. Describe different types of dies. Describe a drawing die. Describe a compound die. Describe a progressive die. Identify die setups for bending. Explain how the die makes parts. Describe standard die components. Identify the components of the upper die shoe. Identify the components of the lower die shoe. Describe materials used to make die components.

    3. 3 Dies & Presses Die: Any complete press tool, consisting of a pair (or a combination of pairs) of mating members for producing pressworked (stamped part), including all supporting and actuating elements of the tool. Die: The main tool typically attached to the lower portion of the die set. Die Set: The collective assembly of upper and lower die shoes, guide pins and bushings, and punch and die retainers. Punch: The tool typically attached to the upper portion of the die set that shapes or penetrates the sheet metal. Punch press: A machine with a stationary base and an upper ram that moves along a vertical axis to shear, bend, or form sheet metal.

    4. 4 Dies & Presses Compound die: A die designed to simultaneously perform more than one operation with each stroke of the press. For example, a compound die may blank and pierce in a single stroke. Combination die: Another term for a compound die. For some manufacturers, the term "combination die" implies a die that both cuts and forms the metal.

    5. 5 Dies & Presses Progressive die: A die containing a series of stations that perform one press operation after another in series. A progressive die gradually forms a part as it moves through the die, and the last operation separates the part.

    6. 6 Progressive Die

    7. 7 Power Presses Power presses: Mechanical Press, Hydraulic Press Hydro-Mechanical Press

    8. 8 Hydraulic presses - use a large piston and cylinder to drive the ram Longer ram stroke than mechanical types Slower than mechanical drives Suited to deep drawing Mechanical presses – convert rotation of motor to linear motion of ram High forces at bottom of stroke Suited to blanking and punching Power and Drive Systems

    9. 9 Mechanical Press A mechanical press brake uses a motor, flywheel and eccentrics to convert the rotary motion of the motor and flywheel into a vertical or reciprocating motion for the punch/ram.

    10. 10 Hydraulic Press Hydraulic Press utilizes a motor and a pump to move hydraulic oil into the top of the cylinder to exert pressure to move the punch/ram. The tonnage of a hydraulic press brake is directly proportional to the oil pressure and the area of the piston under pressure.

    11. 11 Hydro-mechanical Press A single hydraulic cylinder powers a mechanical linkage system to bend, punch or form material (A press in which the forces are created partly by a mechanical system and partly by a hydraulic system).

    12. 12 Stamping Press Components of a typical mechanical drive stamping press

    13. 13 Types of Stamping Press Frame Gap frame Configuration of the letter C and often referred to as a C-frame Straight-sided frame Box-like construction for higher tonnage

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    18. 18 Punch and Die Components Components of a punch and die for a blanking operation.

    19. 19 Punch and Die Components Top die shoe Bottom die shoe Guide plate Top back-up block (backing plate) Bottom back-up block Guide pin Punch Punch retainer with adjusting plate V-Ring plate Guide bushing Ejector Die Piercing punch holder Guide bushing

    20. 20 Major Components Press Bed: rectangular part of the frame which supports a bolster plate. Bolster Plate: flat steel or cast iron plate, upon which press tools and accessories are mounted. Ram or slide: The upper press member that moves through a stroke a certain distance . Knockout: A mechanism operating on the upstroke of a press, which ejects workpieces or blanks from the upper half of a press tool. Cushion: A press accessory located beneath or within a bolster for producing upward motion and force (actuated by air, oil, rubber, high-pressure nitrogen or springs)

    21. 21 Die Components

    22. 22 Die Components

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