[Retracted] An Improved Ant Colony Optimization Approach for Optimization of Process Planning

Table 5

Features, operations, and machining information for Part 2.

Features	Feature descriptions	Operations	TADs	Machines	Tools	Remarks
F1	Planar surface	Milling (OP1)	+𝑍	M2, M3	T6, T7, T8	M1(10): Drilling press
F2	Planar surface	Milling (OP2)	−𝑍	M2, M3	T6, T7, T8	M2(40): Three-axis vertical milling machine
F3	Two replicated pockets	Milling(OP3)	+𝑋	M2, M3	T6, T7, T8
F4	Four replicated holes	Drilling(OP4)	+𝑍,−𝑍	M1, M2, M3	T2	M3(100): CNC 3-axis vertical milling machine
F5	A step	Milling (OP5)	+𝑋,−𝑍	M2, M3	T6, T7
F6	A protrusion (rib)	Milling (OP6)	+𝑌,−𝑍	M2, M3	T7, T8	M4(60): Boring machine
F7	A boss	Milling (OP7)	−𝑎	M2, M3	T7, T8	T1(7): Drill 1
F8	A compound hole	Drilling (OP8)	−𝑎	M1, M2, M3	T2, T3, T4	T2(5): Drill 2
		Reaming (OP9)		M1, M2, M3	T9	T3(3): Drill 3
		Boring (OP10)		M2, M3	T10	T4(8): Drill 4
F9	A protrusion (rib)	Milling (OP11)	−𝑌,−𝑍	M2, M3	T7, T8	T5(7): Tapping tool
F10	A compound hole	Drilling (OP12)	−𝑍	M1, M2, M3	T2, T3, T4	T6(10): Mill 1
		Reaming (OP13)		M1, M2, M3	T9	T7(15): Mill 2
		Boring (OP14)		M3, M4	T10	T8(30): Mill 3
F11	Nine replicated holes	Drilling (OP15)	−𝑍	M1, M2, M3	T1	T9(15): Ream
		Tapping (OP16)		M1, M2, M3	T5	T10(20): Boring tool
F12	A pocket	Milling (OP17)	−𝑋	M2, M3	T7, T8	MCC = 160
F13	A step	Milling (OP18)	−𝑋,−𝑍	M2, M3	T6, T7	SCC = 100
F14	A compound hole	Reaming (OP19)	+𝑍	M1, M2, M3	T9	TCC = 20
		Boring (OP20)		M3, M4	T10