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Presentation by-

Ravi Gupta

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2

Title

MACHINING

of

EMD Crank Case

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MACHINING SEQUENCE OF GM CRANK CASE

MACHINING OF GM CRANK

CASE IS DONE IN 03(THREE)

SET UP ON PORTAL MILLING

MACHINE

ANGULAR BORING OF

RETAINER BORES AND

DRILLING OF WATER

JUMPER HOLES ARE DONE

ON TAL ANGULAR BORINGMACHINE.

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Ist Set Up

Rough machining of MFM face.

Rough & semi finish machining ofbase rail.

Rough & semi finish machining ofPC pad.

Rough & semi finish machining ofCSD &ACC End.

Drilling and tapping of MFM.

Drilling of both the base rail RS &LS.

Drilling and tapping on both theside of PC pad.

Base RailMFM

CSD END12/17/2014 4bipin

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Ist Set Up

Rough boring of crank case.

Phantom milling of MFM.

Thrust machining of center

MFM. Tang slot (Shell lock) milling

in all the MFM.

Probing of Window RS & LS.

Machining of both sidewindow (RS & LS)

Window

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Ist Set Up

Drilling and tapping ofboth the end (CSD &ACC).

Finish milling of boththe end (CSD & ACCend).

Serration milling on all

MFM face. Un clamp and unload

the crank case.

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Assembly Of Main Bearing Cap.

Deburring and cleaning of

serrations of MFM.

Deburring and cleaning of

serrations of Main bearing

cap. Tighten all MB Caps at the

torque 350 ft-lbs.

Tighten all MB Caps at the

torque 1100 ft-lbs. Re-open all the MB cap.

Finally tighten all the MB caps

at the torque 750 ft-lbs.

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2ndset up

Set up and align the Crank

case on V-type fixture.

Rough boring of all the

bores.

Semi finish boring of all the

bores.

Finish boring of all the

bores.

Un clamp and unload the

cank case for 3rdset up.

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3rdSet up

Load,aligne and clamp the crankcase on 3rdset up fixture.

Rough milling of Top deck centerand both the Top deck (RS&LS).

Finish milling of Top deck center

and both the Top deck (RS&LS). Drilling and tapping of Top deck

center and both the Top deck(RS&LS).

Clearance machining for crab hole

and spline nut hole of both theTop deck.

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3rdSet up

Crab hole drilling of both the topdeck (RS&LS).

Drilling and Reaming of spline nuthole of both the top deck (RS&LS).

Key way (Slot) milling on both thetop deck.

Rough, semi-finish and finishmilling of CRV pad of both theside (RS & LS).

Drilling and reaming of CRV padof both the side (RS & LS).

Un clamp and unload the Crankcase.

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Angular boring of Retainer bores

Angular boring of Retainerbores, drilling and reamingof water jumper holes aredone on TAL Angular boringmachine.

Set and align the Crank caseon boring fixture.

Rough boring of all theretainer bores.

Semi-finish boring of all thebores.

Finish boring of all thebores.

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Attend Deficiencies And Send The Crank

Case To Es.

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12/17/2014 13bipin