factor maquinaria

FACTOR MAQUINARIA – FACTOR HOMBRE ACTIVIDADES DE LA PRACTICA

EJERCICIO 1

D=3000 piezas

H = 5* 18 = 90 h x sem

.PARA LA OPERACIÓN A :

P=D/1-f =3000/(1-0.024)= 3073.77 piezas x semana

H=90 h x sem

Hm=(3073.77/500) * 0.5 h = 3.073 h x sem

Ho= 90 – 3.07 = 86.93 h

Ho/(Ho+Hm)=86.93/90 = 0.96

Nro maquinas = 0.05 h * 3037.77 / ( 90 * 0.96 ) = 1.76 = 2

.PARA LA OPERACIÓN B:

P=D/1-f =3000/(1-0.05)= 3157.89 piezas x semana

H=90 h x sem

Hm=(3157.89/500) * 0.5 h = 3.16 h x sem

Ho= 90 – 3.16 = 86.84 h

Ho/(Ho+Hm)=86.84/90 = 0.96

Nro maquinas = 0.083 h * 3157.89 / ( 90 * 0.96 ) = 3.03 = 4

… Se requiere un total de 6 maquinas .

EJERCICIO 2

H=45*4*12*0.85 = 1836 h x año

Ho/(Ho+Hm) [A] = 81.5/(81.5*8.5) = 0.91

Ho/(Ho+Hm) [B] = 81.5/(81.5*8.5) = 0.91

Ho/(Ho+Hm) [C] = 83/83+7 = 0.92

Nro maquinas [A]= (0.033 h * 3307.2) / ( 150 * 0.91 ) + (0.083 h * 13021.2) / ( 150 * 0.91 ) + (0.067 h * 6785) / ( 150 * 0.91 ) = 12.04 =13

Nro maquinas [B]= (0.17 h * 3427.2) / ( 150 * 0.91 ) + (0.17 h * 13021.2) / ( 150 * 0.91 ) + (0.17 h * 6349.2) / ( 150 * 0.91 ) = 28.39 = 29

Nro maquinas [C]= (0.083 h * 3108.8) / ( 150 * 0.92 ) + (0.033 h * 12435.2) / ( 150 * 0.92 ) + (0.1 h * 6579.5) / ( 150 * 0.91 ) = 9.34 = 10

EJERCICIO 3

D= 2000 u x dia

H = 9h

Hm = 0.5h

ARMAR CAJA E INSPECCIONAR

Req. De HH por periodo = (26.05/60)x(1/12)x(2000/1-0.05) = 78.51

N = (78.51/8.5) = 9.24 = 10

COLOCAR STICKER

Req. De HH por periodo = (1.84/60)x(1/12)x(2000) = 5.11

N = (5.11/8.5) = 0.60 = 1

ENCAJAR


N = (31.72/8.5) = 3.73 = 4

ARMAR LOTE


N = (7.75/8.5) = 0.91 = 1

EJERCICIOS PROPUESTOS

EJERCICIO 1

D = 1200 000 u

2x7.5x20 » 40% 300h

100% 750h

P=D/1-f =120000/(1-0.03)= 1237113.4

H=750x12

Hm=(9000/78) = 115.38h

Ho= 9000-115.38 = 8884.62 h

Ho/(Ho+Hm)=8884.62/9000 = 0.98

Nro maquinas = (0.033 h * 1237113.4) / ( 9000 * 0.98 ) = 4.63 = 5

EJERCICIO 2

D = 2000

Hm = 50 min x dia

T = 0.4 min = 0.0067h

P =2000/(0.75)= 2666.67

H= 8 h

Hm = 50 min = 0.83h

Ho= 8-0.83= 7.17 h

Ho/(Ho+Hm)= 7.17/8 = 0.896

Nro maquinas = (0.0067 x 2666.67) / ( 8 x 0.896 ) = 2.49 = 3

EJERCICIO 3

EJERCICIO 4

D = 9000 u x sem

H = 5x9 = 45h x sem

Hm = 45x0.15 = 6.75h

Ho = 45 – 6.75 = 38.25

Ho/(Ho+Hm)= 38.25/45 = 0.85

TORNO REVOLVER

P = (667x45)/(1-0.03) = 30943.29

Nro maquinas = ((1/667) x 30943.29) / ( 45 x 0.85 ) = 1.21 = 2

TROQUELADORA

P = (480x45)/(1-0.05) = 22736.84

Nro maquinas = ((1/480) x 22736.84) / ( 45 x 0.85 ) = 1.24 = 2

TALADRO DE PRESIÓN

P = (240x45)/(1-0.02) = 11020.41

Nro maquinas = ((1/240) x 11020.41) / ( 45 x 0.85 ) = 1.20 = 2

PRENSA PARA EJES

P = (600x45)/(1-0.01) = 2727.73

Nro maquinas = ((1/600) x 27272.73) / ( 45 x 0.85 ) = 1.19 = 2

SOLDADOR DE PTOS. PEQ.

P = (300x45)/(1-0.03) = 13917.53

Nro maquinas = ((1/300) x 13917.53) / ( 45 x 0.85 ) = 1.21 = 2

SOLDADOR DE PTOS. GRANDES

P = (350x45)/(1-0.05) = 16578.94

Nro maquinas = ((1/350) x 16578.94) / ( 45 x 0.85 ) = 1.44 = 2

TALADRO DE PRESIÓN

P = (300x45)/(1-0.02) = 13775.51

Nro maquinas = ((1/300) x 13775.51) / ( 45 x 0.85 ) = 1.20 = 2

TORNO PULIDOR

P = (200x45)/(1-0) = 9000

Nro maquinas = ((1/200) x 9000) / ( 45 x 0.85 ) = 1.176 = 2

factor maquinaria

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