DELHI INSTITUTE OF DELHI INSTITUTE OF TOOL ENGINEERINGTOOL ENGINEERING

Wazirpur Industrial AreaWazirpur Industrial AreaNEW DELHINEW DELHI

✧ TOOL ROOM MANUFACTURES DIFFERENT TYPES OF DIES

✧ ALSO THERE IS PRODUCTION OF SMALL PLASTIC COMPONENTS

✧ ✧ ELECTRICAL DISCHARGE ELECTRICAL DISCHARGE MACHINE (EDM)MACHINE (EDM)

✧ REMOVAL OF METAL CAUSED BY THE ELECTRIC SPARK

✧ USED FOR MACHINING OF ANY METAL IRRESPECTIVE OF ITS HARDNESS

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.

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.

WIRE CUT ELECTRICAL WIRE CUT ELECTRICAL DISCHARGE MACHININGDISCHARGE MACHINING

✧ELECTRODE : THIN SINGLE STRAND METAL WIRE ✧DEIONISED WATER ACTS AS DIELECTRIC ✧CNC CONTROLLED ✧GUIDES CAN MOVE IN SIX DIRECTIONS

ADVANTAGESADVANTAGES✧ THERE ARE NO RESIDUAL STRESSES ✧VERY LITTLE CHANGE IN MECHANICAL PROPERTIES ✧USED TO MAKE DELICATE AND INTRICATE SHAPES

INJECTION MOLDING MACHINE

✧It is a manufacturing technique for making parts from both thermoplastic and thermosetting plastic materials in production.✧MASS PRODUCTION

MOLDS✧Typically constructed from hardened steel, pre-hardened steel, aluminium, and beryllium-copper alloy

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

DEFECTSDEFECTS✧✧FLASHFLASH::Excess material in thin layer exceeding normal part geometry✧SHORT SHOT: SHORT SHOT: Partial filling of mold cavity