delhi institute of tool engineering
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DELHI INSTITUTE OF DELHI INSTITUTE OF TOOL ENGINEERINGTOOL ENGINEERING
Wazirpur Industrial AreaWazirpur Industrial AreaNEW DELHINEW DELHI
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✧ TOOL ROOM MANUFACTURES DIFFERENT TYPES OF DIES
✧ ALSO THERE IS PRODUCTION OF SMALL PLASTIC COMPONENTS
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✧ ✧ ELECTRICAL DISCHARGE ELECTRICAL DISCHARGE MACHINE (EDM)MACHINE (EDM)
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✧ REMOVAL OF METAL CAUSED BY THE ELECTRIC SPARK
✧ USED FOR MACHINING OF ANY METAL IRRESPECTIVE OF ITS HARDNESS
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Advantages✧complex shapes that would otherwise be difficult to produce with conventional cutting tools✧ there is no need of heat treatment to soften and re-hardening of pre-hardened steel✧ extremely hard material to very close tolerances ✧very small work pieces where conventional cutting tools may damage the part from excess cutting tool pressure.
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Disadvantages✧The inability to machine non-conductive materials. ✧The slow rate of material removal. ✧ The additional time and cost used for creating electrodes for ram / Sinker EDM. ✧ Reproducing sharp corners on the workpiece is difficult due to electrode wear.
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WIRE CUT ELECTRICAL WIRE CUT ELECTRICAL DISCHARGE MACHININGDISCHARGE MACHINING
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✧ELECTRODE : THIN SINGLE STRAND METAL WIRE ✧DEIONISED WATER ACTS AS DIELECTRIC ✧CNC CONTROLLED ✧GUIDES CAN MOVE IN SIX DIRECTIONS
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ADVANTAGESADVANTAGES✧ THERE ARE NO RESIDUAL STRESSES ✧VERY LITTLE CHANGE IN MECHANICAL PROPERTIES ✧USED TO MAKE DELICATE AND INTRICATE SHAPES
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INJECTION MOLDING MACHINE
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✧It is a manufacturing technique for making parts from both thermoplastic and thermosetting plastic materials in production.✧MASS PRODUCTION
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MOLDS✧Typically constructed from hardened steel, pre-hardened steel, aluminium, and beryllium-copper alloy
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Cost✧The cost of manufacturing molds depends on a very large set of factors ranging from number of cavities, size of the parts (and therefore the mold), complexity of the pieces, expected tool longevity, surface finishes and many others
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DEFECTSDEFECTS✧✧FLASHFLASH::Excess material in thin layer exceeding normal part geometry✧SHORT SHOT: SHORT SHOT: Partial filling of mold cavity