Write a complete APT part program to machine the outline of the geometry shown in the top view up to a depth of 5 mm in one cut as shown in diagram. The end mill used is 20 mm diameter.

Mumbai University > Mechanical Engineering > Sem 7 > CAD CAM CAE

Marks: 12 Marks

Year: Dec 2016

PART / 786 (JOB NO)

MACHIN /MM POST 3 (NAME OF THE POST PROCESSOR)

PRINT ON \$$ PRINT GEOMETRY CANONICAL FORM

CL PRINT ON \$$ PRINT CL DATA

\$$ X0, Y0, Z0, ASSUMED AS SHOWN

\$$ PART GEOMETRY

SP = POINT / -10,-10,50

L1 = LINE / X AXIS

L5 = LINE / Y AIXS

L4 = LINE / PAREL, L1, Y LARGE, 15

L3 = LINE / PAREL, L1, Y LARGE, 65

L6 = LINE / PAREL, L5, X LARGE, 10

L7 = LINE / PAREL, L5, X LARGE, 60

C1 = CIRCLE / 10, 15, 15

C2 = CIRCLE / 50, 25, 10

C3 = CIRCLE / 52, 58, 0

P1 = POINT / 35, 4

\$$ DEFINITION OF PLANE 5 MM BELOW THE PART SURFACE

PLI = PLANE / 0, 0, 1, -5

\$$ SETUP STATEMENT

CUTTER / 20

UNITS / MM

SPINDL / 700 / CLW

FEDRAT / MMPM, 80

INTOL / 0.05

OUTOL / 0.05

SPINDL / ON

\$$ MOTION STATEMENTS

RAPID, GO TO / SP

GO ITO, L4, TO PLI, TO L6

GO FWD / L4, TAN TO C2

GO FWD / C1 TAN TO L7

GO FWD / L7 TAN TO C3

GO FWD / C3, TANTO L3

GO FWD / L3, PAST L6

GO FWD / L6 PAST, C1

GO FWD / C1 PAST L4

GO FWD / L4 PAST L8

GO FWD / L8, PAST L3

GO FWD / L6 PAST L4

RAPID, GO TO, SP (RETURNING TO START POINT SP)

COUNT / OFF

SPINDL / OFF

\$$ LOAD A DRILL NO 2 HAVING DAIMETER 12 MM AND LENGTH 50 MM

LOAD TL / 2, 50

CUTTER / 12

SPINDL / 1000, CLW

COOLNT / MIST

RAPID, GO TO / P1

CYCLE / DRILL - 13, mmPR, 0.5, 2

RAPID, GO TO/ SP \$$ RAPID TO START POINT

\$$ LOAD A DRILL NO 3 HAVING DIAMETER 8 mm AND LENGTH 50 mm

LOAD TL / 3, 50

CUTTER / 8

SPINDL / 1200 / CLW

COOLNT / MIST

RAPID; GO TO / P1

CYCLE / DRILL, -3, mmPR, 0.4, 2

RAPID, GO TO / SP

F1NI